Confidentiality, Multiple Relationships, Conflict of Interest Essay

You are a counseling psychologist. One day, a 19 year old daughter had knocked on your office door and asked for some advice. You notice that she is Lily, your nephew. She is almost crying when she entered your room. It is important to note that this nephew of yours had become an intern in your clinic 6 months ago. This made you hesitant to accept her in your counsel. However, you decide to let her in. After some 10 minutes of just crying, she told you that she was raped by her boyfriend one week before that consultation. Upon hearing that, she urgently told you that you don’t want to tell that to her parents, meaning your sister (you and her mother are sisters). She decided not to pursue any criminal charges against her boyfriend and will just leave and forget the issue. She still loves her boyfriend and decided to stick with him despite the crime. She told you that she only consults you because she just wants someone who is professional that she can share her burden who can guarantee that the secret will not be told on other people. You suddenly remember that you already met her boyfriend in one family affair. At that time, you have a feeling inside that that guy has some mental abnormality. Subtlety, you are against their relationship. At this moment, you are undecided about the issue. You are unsure if you are going to keep the confidentiality of the case of your client which turned to be a former intern in your clinic and at the same time your nephew.

Cricket a Threat to Other Games

Is Cricket’s massive appeal in India at the cost of other sports? ‘Cricket is a religion in  India’- a powerful statement that would bring a smile on all cricket lovers in India. However, rarely expressed is the other side of the coin – an issue of one man’s extreme popularity killing the very identity and existence of all other players in the mix. No Doubt that the game’s popularity has brought glory to millions of fans residing in India and worldwide, has instilled a sense of pride even in non-cricket-following Indian audiences†¦whenever the country has won, it  has brought laurels to the nation, elation to Indian people from all age groups-  be it a tiny toddler who craves for sixes from Sachin and Sehwag’s bat and or the keen cricket follower who deeply understands the nuisances of the game and gets elated whenever the little master,   Sachin crosses yet another milestone. But these cricket-savvy arguments rarely bring to light the other dark picture†¦ While cricket’s popularity has increased in India at a exponential rate, the fortunes of the other games has fallen to new lows. Hockey –our national game , in which India was considered a super-power has degraded so quickly that team India had failed   to even qualify for the  Olympics-the international sporting event in which India won medals in its golden era of hockey. It’s a pity that many international games like Motor-racing, Formula 1 races, golf, tennis, Athletics, gymnastics, swimming etc. on’t even find an Indian representation†¦. But the key question is? Is cricket responsible for this†¦The arguments are endless both in favor and against this argument. The supporters will say that all games have their separate, non-intersection identities, interests, fan-following and popularity scales†¦how come we attribute other sport’s losses on cr icket’s gains†¦ The critics will respond by equally strong arguments-if all the financial aids, funds, sponsors will be consumed by the ‘cricket’ giant ,wont the other games be starved of existence†¦ The conclusion is not easy to draw and one possible solution is to focus on aggressive advertisement of other sports, by roping in   government aids,   big corporate sponsors, the  media  and broadcasting people, the games’ iconic players as ambassadors etc†¦ Maybe someday we can produce our own version of   a Michael Schumacher or a Roger Federer†¦but for now cricket remains the undisputed king of Indian sports!! View point 2: Cricket dates back to 1721 in its trace in India, where it is more than a religion today. Being called a gentlemen game, it attracts millions of people all over the world. The popularity it pulls in the public made it a crazy game dominating any other game in India. Neither any game sustains nor collects popularity or spins the money as the cricket does. Because of this popularity other sports are ignored in our country that is about to extinct due to lack of proper encouragement from public and government. This dominance of cricket makes other games to feel low and the sportsmanship suffered inferiority complex in other areas. Arguments towards cricket We can’t blame one game for the fall of other game as there is nothing in game; everything is in the mind of people who enjoy the game. Cricket being craziest game is definitely a stylish and gentlemen game which at any cost shouldn’t be tagged with a line, â€Å"cricket is a curse for other games† which is more than religion in our country. Indian cricket has a history of holding many records often which are not easy even for the founders of the game. Though it is a lucrative game, it doesn’t mean there ends the professionalism. It is played at its standards and always allured millions of people across the world not only shaping the careers of youth but also earning them prestigious awards and rewards from the game and through endorsement. Popularity that cricket has is due to the influence which has been made by great cricketers like Kapil Dev, Ravi Shastri, Sunil Gavaskar, Sachin Tendulkar and many legendary performers. It is also the most favourite time pass for Indian youth and helps the nation to achieve integrity. Sponsors through advertisement help in boosting the economy and provide good business opportunities. Coaching centres and sports shops are established for cricket which helps them as a form of self employment. Arguments against cricket Cricket is posing threat to other games in India due it its mass popularity and makes the other sportsman suffer for their contributions. Government never supports such activities; and even if it supports will surely undermine the capacity by withdrawing the facilities provided for other sports. Cricket is a game of money, and nothing like professionalism exists in it. Youth pursue this game as profession for fame and money and the popularity it has among the mass. Players never show much attention once they are placed in national team. They will try to make fortune from the sponsors and other facilities provided. Betting is other area from which cricketers get easy money without playing game and has been in news for many matches which now brought the public to which match should be believed whether it is not fixed or fixed. Media hypes the game undermining the potential of other games and politicians do interfere to get their piece of cake in the dirty money making business. No professionalism, no sincerity. Money is the only purpose around which the game revolves.

Joint Functions Commander's Planning Guidance Coursework

Joint Functions Commander's Planning Guidance - Coursework Example CFLCC units will be prepared for transition to Phase II (Seize the Initiative) operations should sequential FDOs fail to prevent an attack by Ahurastan (AH) into Azerbaijan (AZ). The CFLCC command staff’s problem frame has identified two areas of concern. The first is that the commander has identified the mobility corridor vicinity of GANJA (KIROVABAD) as decisive terrain in CFLCC’s movement from TBILISI to the KURA River basin. This mobility corridor is canalized by urban terrain in the north and mountainous terrain in the south. The CFLCC command believes that failure to control this mobility corridor will significantly impede the success of IAW EUCOM CONPLAN 4567-15. e. The second area of concern is that AH may attack before JTF-CASPIAN has fully deployed. The CFLCC command has analyzed this ECOA, and their worst case assessment is that the ADF brigades deployed along the AZ border may only be able to delay AH ground forces 24-48 hours. Because of the accelerated tim eline, there will be limited JTF-CASPIAN forces available to support this contingency mission. OPERATION’S PURPOSE: Prevent Ahurastan forces from controlling the mobility corridor from the vicinity of GANJA (KIROVABAD) to BAKU utilizing a THREE PHASE OPLAN,. AH Capstone mission is the isolation of BAKU IOT leading to a political settlement that will recognize AH’s oil claims in the region. Phase I –DETER- Pre-conflict preparation and transition to war: M-day to D-day. Provide aggressive reconnaissance and presence within the GANJA (KIROVABAD) to BAKU Area of Operations (AO). Coalesce and integrate combined battle plan and order of engagement with all allied forces AZ. Commence pre-emptive Phase II (Seize) deployment of forces into staging areas. Phase II-SEIZE- Initial transition to war. D-day to OPLAN Day 4. Commence interdiction attacks with long-range fires and attack aviation forward of PL BLACK to disrupt lead tactical

Hurricane Essay Example | Topics and Well Written Essays - 750 words

Hurricane - Essay Example The federal government has placed several organizations that deal with the monitoring of surroundings to detect the possibility of a calamity happening. In light to this, the federal government has made some developments after Katrina. Organizations and disaster management bodies have been able to assist in the recovery and help rendering to the communities affected by the happening. Bodies like the federal emergency management agency (FEMA) is one of the spear heading body the federal government has deployed to the areas the hurricane hit to deliver assistance to the communities affected. Following hurricane Katrina’s occurrence, efforts were made to reflect past the instant response to the disaster. Long- term community recovery planning (LTCR) section was instigated initially in the recovery of the debris and assistance to the affected party. This evolving function of the government is determined to give the community a speedy recovery and enhances the community’s recovery on the lost property while looking into the future of sustainability of the community. The LTCR is a development the federal government put in place to assist the public and local governments in the recovery of the community housing and every economic stimulus infrastructure through engineers, architects, and other professionals of the disaster management. The LTCR made the plans for recovery in a swift succession where by the year 2006 the metropolitan plan of New Orleans was completed by spring. The function is doing the recovery in a fast pace alongside specific sustainability pr ojects. The implementations of the proposed plans have since been articulated. There were 17 recovery zones in the plan for the commercial development in New Orleans, which included the hard hit areas of the state. Recently, major developments have created the modern hurricane tracking technology that includes new computer technology models. The tropical waves that emanate from the west of Africa

INTERNATIONAL COMMERCIAL dispute resolution Essay

INTERNATIONAL COMMERCIAL dispute resolution - Essay Example The International Council for Commercial Arbitration (ICCA) has been set up to meet the expectations of all global parties that enter into negotiations with other entities outside their country of origin or where territorial boundary of countries was merged. In light of international conflict resolution, this paper will try to discuss the arbitrator’s duty of impartiality and independence under the English arbitration Act and compare with at least another system using resolved cases as basis. Arbitration Arbitration is one of the more popular forms of alternative dispute resolution of which two opposing parties agree to use a third person or more to settle the case in question. Although conducted outside the court, this system is acceptable and legal with the decision called the award1. The third party reviews the dispute and provides a decision that the parties have agreed to be bound. In many countries, the arbitration may either be mandatory or voluntary and it is often use d in commercial transactions even between varying nationals or countries. The third party of the arbitration process is called the arbitrator and the arbitrator is independent and impartial23. The International Commercial Congress of Arbitration clarified that arbitration follows the contractualist theory of arbitration that the parties have the right to control the process and maintain that right during the process; and that the parties’ agreement to settle their disputes entails to allow the arbitrator or arbitrators to control the process4. However, in reality, the ICCA stated that it is the State which has sole control of the arbitral process because it provides the power to the parties as well as the arbitrators. The role of the State is apparent in the principle of independence as well as impartiality of the arbitrators together with the principle of immunity bestowed on the arbitrator by the State5. An Arbitrator’s Duty of Impartiality The impartiality of the ar bitrator is a traditional expectation of which â€Å"business managers, investors, and nations entrust their treasure and their welfare,†6. The ethical principles must be guarded by the arbitrators themselves. There are continuing trends and changes that may affect attitudes and will temp arbitrators such as conflict-of-interest cases but Park endorsed an implementation with â€Å"sensitivity to new trouble spots,†7. Such caution of impartiality can be attributed to a lawyer who may serve as an advocate for one case but where there is shift of role to an arbitrator, will remain open about propositions so that regular adjustment becomes necessary on the part of the arbitrator8. The expectation on the arbitrator as impartial was further explored by Bishop and Reed as â€Å"An arbitrator who is impartial but not wholly independent may be qualified, while an independent arbitrator who is not impartial must be disqualified. In selecting party-appointed arbitrators in inter national arbitration, the absolutely inalienable and predominant standard should be impartiality,†9. These conflicts were observed in the cases mentioned in the LCIAM AMINZ Arbitration Seminar involving a partner layer in one locality who served as an arbitrator for an overseas dispute10. Arbitration in England and the United States It was observed that court cases in England and the United States have raised the standards for arbitrators as they were accused of possible bias. They were enabled to refuse as part of their rights although

Seven Top Competencies of a Project Manager Essay

Seven Top Competencies of a Project Manager - Essay Example Role of the Project Manager The project manager has a significant role of ensuring execution of the project in different areas including planning, operation, monitoring, and control, as well as ending the project per se. Project managers coordinate activities of project team members to achieve the proposed objectives and the vision of the project. In their day-to-day functions, the projects managers have to focus on short and long-term activities. Conventionally, project managers focused on larger, more comprehensive projects. However, contemporary organizations give project managers the mandate to work with even smaller, less technical projects. The Project Management concept has received a lot of attention in the past few decades and has become a highly desired area in most of institutions and organizations. According to Muller and Turner (2010), one goal of a good project manager is to know how he/she is going to manage his/her project, know what to do if the implementation plan f ails, to accomplish the project objectives and ensure integration of the inputs of all of the project stakeholders. Further, the role of project managers is diverse. Turner and Muller (2005) highlight that they determine how the project should set off. By good Integrated Management they help in determining, developing and managing the direction of the project, as well as the scope of the project. A good and well defined project must include best scope management practices that include planning, defining and managing the scope of the project. Another issue is on-time and cost management. Managers should develop budget and a good time plan such as developing a schedule, allocating resources and managing funds for the project for effective results. A good process gives good output due to quality management. There must be a task force to take care of the quality of the process in question such that it meets or even exceeds various quality parameters set but the laid down standards (Camp us, 2002). Human Resource Management is vital and is the responsibility of the project manager. He/she needs to take care of his/her team, encourage and motivate members and make sure the team is on a pathway to success, which helps to ensure that the project implementation process moves in the right direction (Campus, 2002). Communication allows good information flow and hence communication management should be one of the critical aspects that project managers should strive to accomplish among senior and junior staff. The project manager needs to prepare a communication plan, communication technique and make sure that there is healthy communication, both internally and externally (Crawford, 2000). The manager is evaluated successfully against each of the factors affecting his/her communication skills. Risk and hazards are inevitable and, hence, there is need for project managers to establish strong risk management strategies. Various risks which exist in a project should be identif ied and a mitigation plan needs to be developed and implemented to ensure that the project is not affected at any point. A project manager determines success or failure of the project based on the work and procurement plans developed before ground breaking. The project manager has a role of ensuring that procurement plans are strategically positioned to enhance the accomplishment of the project objectives. Various materials needed during the project need to be procured and

The Person I Admire Most Is Nelson Mandela Essay

The Person I Admire Most Is Nelson Mandela - Essay Example Slavery became so evident that the victims panicked, and their bodies sweated, as they would not accumulate the mistreatment anymore. People were ruled through abrasive rules that wounded many lives to the extent many sobbed bitterly. In 1994, discrimination was dismantled through the first democratic election and Nelson Mandela became elected as the president. In his leadership, he emphasized much on forgiveness towards a rainbow nation consisted of unity and harmony. To date, many emulate Nelson as a public figure that transformed South Africa into his leadership. An endless flow of peace and harmony became evident in the nation. Today, he belongs to the category of modern heroes that graced civilizations with his noble contribution and personal charisma. His life characterized a man who was a thirst for freedom, equality, political rights. Still, he was distressed to see his fellow Africans suffering and crying all day long. These broke his heart and infused him with the desire to fight for democracy and liberty for all. He accomplished these with cruel torture, shed blood, and resistance from the whites who disregarded the democratic governance. Additionally, Nelson Mandela spent some years in jail and was severely mistreated. While in Jail, Nelson Mandela could hear his conscience whispering â€Å"Do not give up.† Although the experience was so painful, it reminded him of what the nation would become if he gave up. Winning would mean so much that life would be normal and one could go anywhere he or she wished. During his 27 years in prison, Nelson Mandela became a source of aspiration and inspiration (Mandela and Crwys-Williams 22). Personally, I emulate him because his greatest accomplishment was not only in becoming the president but also in abolishing slavery and discrimination. He ushered in harmony, democratic governance, social harmony, and national unity that many recognizes up-to-date.

The advertising of condoms Term Paper Example | Topics and Well Written Essays - 5500 words

The advertising of condoms - Term Paper Example Condom and pills are equally popular as methods of contraception as per data collected by the Office for National Statistics (Daily Mail, 2009). This was the outcome of a  £5.2 million campaign by the Department of Health conducted with the view of getting more women to carry condoms. Even in developing countries like Thailand condoms are 90% effective in preventing HIV transmission (Hearst & Chen, 2004). However, in countries such as Botswana and Cameroon the sale of condom rose but so did the incidences of HJIV transmission, thereby suggesting that condom use does not reduce HIV and AIDS transmission. No details were available of who used the condoms. Thus condom use might be high among the general public and low among those in high risk. Again, inconsistent use leads to higher risk of HIV transmission. Condom promotion can be successful among commercial sex workers although promoting its use to the general public is difficult. Several condom-promoting strategies have been employed such as free distribution among sex workers and lowering prices but the most successful strategy has been social marketing. In Uganda use of condom was very low until social marketing began in 1990s. The developed and the developing countries had the same response to the promotion of condoms – it would encourage sexual activity with condoms rather than encourage abstinence. This attitude affects advertisement design in this sector. 2. Social marketing Social marketing uses the four marketing Ps – product, price, placement and position – as is used for generic products. For a global strategy of the control of HIV social marketing of condoms has been adopted as the key element (Cohen, Farley, Bedimo-Etame & Scribner, 1999 ). In the US when condom was freely distributed and readily visible and accessible through health care facilities, the use of condoms increased particularly among those at a high risk of HIV and STIs. Condom social marketing in the US was found to be feasible, acceptable and a promising intervention that aided in reducing the number of incidences in STDs. There was relatively small opposition to the program from groups that were traditionally opposed to condoms. Social marketing for condoms is used both for HIV prevention and family planning. Selling condoms falls under social marketing which is not about coercion or inducement. The social marketers try to induce change by applying the principal of exchange (Stead, Gordon, Angus, & McDermott, 2007). It recognizes that the change must bring clear benefit to the customer. Social marketing also involves stages such as targeting, positioning and formulating the marketing mix as generic marketing. Social marketing is concerned with welfa re of the society and is not meant for the benefit of the organization. This is the essence of social marketing. Social marketing has also been defined as the systematic application of marketing concepts and techniques to achieve specific behaviour goals (Lefebvre, 2011). In developed countries social marketing takes the route of persuasive communications for

Quantitative Comparison of Academic Achievement in NYC Public Schools Dissertation

Quantitative Comparison of Academic Achievement in NYC Public Schools vs. NYC Charter Schools Measured by 2009 - 2010 NYS ELA and Math Exams - Dissertation Example According to the research findings charter schools are public schools that operate independently of the district board of education, making them a one-school public school district. They have their own charters written by private individuals: parents, educators, community leaders that enumerate their laws, governance structure and principles. This autonomous setup results in bigger accountabilities for the school. Because of this autonomy and customized curricula, many people believe that charter schools are far more beneficial to children, as compared to public schools. People also believe that charter schools provide better services because of the high standards they set for themselves. There are studies that compare the effectiveness of public schools versus charter schools. However, they differ in their findings. As our understanding of the cognitive development of young children increases, so does the need for high-quality childhood education programs facilitated by confident, c ompetent instructors. The growing appreciation for the potential benefits of quality educational programs has strengthened funding agencies’ and policy makers’ commitment to ensuring all families have access to programming that can support and enhance children’s development, growth, and learning. These benefits can be realized, however, only in high-quality programs with characteristics linked to positive outcomes for children. The establishment of a stable formula for measuring the academic achievement of the students from public schools and charter schools is needed. According to research conducted by Lubienski and Lubienski (2006), public schools and charter schools in New York City are both able to produce students that exemplify academic excellence. Since the No Child Left Behind (NCLB, 2002) legislation was enacted, schools must show that they are contributing to a child’s academic achievement, especially in the areas of English Language Arts (ELA) and Mathematics. Brennan (2009) indicates that New York City public school students outperform their peers from comparable school districts, giving the distinct impression that public schools are also effective educational forums. Conversely, the achievement analysis conducted by Hoxby, Murarka, & Kang (2009) indicates that charter schools are superior to public schools in their ability to educate students in a multitude of academic categories. In addition, Lubienski & Lubienski (2006) indicate that charter school and the â€Å"private-style organizational models† (p.2) were ahead of public schools in providing a model for

Crime and Poverty Thesis Example | Topics and Well Written Essays - 6000 words

Crime and Poverty - Thesis Example For purposes of this study, a definition of poverty and crime is outlined. A crime is an act committed in violation of the law commanding or forbidding it and for which a punishment is imposed upon conviction Legal definition of the word states crime is a wrongdoing classified by the State or Congress either as a Felony or Misdemeanor. A felony is a serious crime punishable by at least one year in prison. During the term of sentence, a person charged with felony loses certain rights such as the right to vote and hold public office. A convicted person is also not allowed to make contracts, get married, suing or keeping professional licenses. A misdemeanor is a crime for which punishment is usually a fine and/or a jail sentence of up to one year, but repeated offenses become a felony. Poverty is defined as a state of condition of having little or no money, goods or means of support. Several studies provided different measures on how poor a family or a person is. According to Boyes & Melvin, a family is poor if its income falls below a certain level and it is defined in an absolute sense: The U.S. uses poverty level, the World Banks uses per capita GNP, and economists use economic security index. The poverty level in U.S. for 2011 was set at $22,350 for a family of four. The World Bank uses per capita GNP of $755 or less as its criterion of a low-income country. In this definition, poverty becomes a relative concept, because the poverty level in U.S. would represent a substantial increase in the living standard of most of the poor people in the world.... Data showed that people do not readily conform to the poverty threshold or level set by the government. People contends that the $20,000 poverty threshold for a family of 4 does not reveal the true situation of poverty level, while others believed it should be higher. Poverty threshold is used by the government as a measure of poverty for a family to qualify in government programs, such as Head Start, Food Stamp Program, National School Lunch Program, the Low-Income Home Energy Assistance Program, etc. The review also revealed causes of poverty among the people of the United States, stating drug abuse as a major cause, health problems causing huge medical bills, and unemployment reasons. It is also noted that there is a rise in unemployment because of the economic crisis, but I find it intriguing to see too many single parents as a cause of poverty. I did not find any substantive data to support this claim of respondents of survey. Other reasons fall under social and culture since reasons given is that poor people lack motivation, a decline in moral values, while others put the blame on the poor quality of public schools. Drug abuse, health care, education and employment problems are concerns of the government and are larger in scope because of government funding needed to solve them. Towards the review three theories emerged why crimes are committed, the sociological, psychological and economic theories. These theories nullify the hypothesis that poverty is the cause of crime.

Eukaryotic organelles Essay Example for Free

Eukaryotic organelles Essay Eukaryotic organelles Living things have evolved into three categories of closely related organisms, called domains: Archaea, Bacteria, and Eukaryota. Life as we see it each day — including plants and animals — belongs to the third domain, Eukaryota. Eukaryotic cells are a more complex opposed to prokaryotes (simpler based cells), and the DNA is linear and found within a nucleus. Organelles are small structures within cells that perform specialized functions. They are found within the cytoplasm (a semiliquid substance that composes the foundation of a cell) Just as the name indicates, you can think of organelles as small organs. There are a dozen different types of organelles commonly found in eukaryotic cells. Some structures of organelles are membrane bound. The Plasma Membrane is a membrane boundary of a cell, and sorts cell transport and is the outermost cell surface. It separates the cell from the external environment. The plasma membrane is made mostly of proteins and lipids, especially phospholipids. The lipids occur in two layers (a bilayer). Proteins embedded in the bilayer appear to float within the lipid, so the membrane is constantly in flux. The membrane is therefore referred to as a fluid mosaic structure. Within the fluid mosaic structure, proteins carry out most of the membranes functions (prokaryote and eukaryote cell structure, 2000. ). The nucleus of eukaryotic cells is composed primarily of protein and deoxyribonucleic acid, or DNA. The DNA is organized into linear units called chromosomes. Functional segments of the chromosomes are referred to as genes. Approximately 100,000 genes are located in the nucleus of all human cells. Within the nucleus are two or more dense organelles referred to as nucleoli. In nucleoli, submicroscopic particles known as ribosomes are put together before their passage out of the nucleus into the cytoplasm. The endoplasmic reticulum (ER) is an organelle that is a series of membranes extending throughout the cytoplasm of eukaryotic cells. In some places, the ER is studded with submicroscopic bodies called ribosomes. The endoplasmic reticulum (ER) consists of two types the rough endoplasmic reticulum and the smooth endoplasmic reticulum. This type of ER is referred to as rough ER. In other places, there are no ribosomes. This type of ER is called smooth ER. The ER is the site of protein synthesis in a cell. Within the ribosomes, amino acids are actually bound together to form proteins. We can take a look at another organelle called the Golgi body (also called the Golgi apparatus). The Golgi body is a series of flattened sacs, usually curled at the edges. In the Golgi body, the cells proteins and lipids are processed and packaged before being sent to their final destination (prokaryotic and eukaryotic cell structure, 2000. ). Lysosomes and vacuoles are membranous sacs. The lysosome is derived from the Golgi body. It is a drop like sac of enzymes in the cytoplasm. These enzymes are used for digestion within the cell. They break down particles of food taken into the cell and make the products available for use. In other words break down old worn-out cell parts within the cell. Vacuoles Eukaryotic cells have their own internal power plant, called mitochondria. Mitochondria are organelles in eukaryotic cells where cellular respiration takes place. Mitochondria contain a short loop of DNA that is distinct from the DNA contained in the cells nucleus. These tiny organelles in the cell not only produce chemical energy, but also hold the key to understanding the evolution of the eukaryotic cell. The mitochondria play a central role in making chemical energy available to the cell. Cells which require and expend a lot of energy typically have a lot of mitochondria (Muscle cells). Plastids are major organelles found in the cells of plants and algae. They are the site of manufacture and storage of important chemical compounds used by the cell. Plastids often contain pigments used in photosynthesis and the types of pigments present can change or determine the cells color. They possess a double-stranded DNA molecule, which is circular. Microbodies are Membrane-bound organelle sacs that contain enzymes that manage many different metabolic reactions. One type of micro body, the peroxisome, regulates the conversion of fats to carbohydrates. Peroxisomes in the liver and kidney cells could also show important in the detoxifying of certain compounds such as ethanol in alcoholic beverages. Peroxisomes occur in both plant and animal cells. Organelles, which generally do not contain membranes, are ribosomes, cytoskeletal structures, centrioles, cilia, and flagella. Centrioles are small cylindrical-shaped structures that are found just outside of the nucleus. Their purpose is to produce microtubules that help move chromosomes during cell division. The cytoskeleton gives strength and flexibility to the cell. It consists of four major components microfilaments, intermediate filaments, thick filaments, and microtubules. Each of these four components provides different functions related to the overall purpose of the cytoskeleton. Cilia, tiny hair-like structures are numerous and are found on the surface of the cell. Their purpose is to move fluids or solids across the cell membrane. The trachea and bronchi are lined with cilia to move mucous that is secreted by the cells lining the trachea up to the pharynx (throat) where the mucous is either coughed up or swallowed. A flagellum is a long hair-like structure that performs a whip-like movement. The male sperm cell is the only cell in humans that contains a flagellum, which helps the sperm cell swim up the female oviduct. Ribosomes are small granular structures that are either attached to the endoplasmic reticulum or are free, floating in the cytoplasm. Proteins are produced on the surface of ribosomes (Unknown, 2012. ). Every part of the cell has a function. Membranes are essential to the organization of living processes within cells because they separate the cell from the outside world. They also separate compartments inside the cell to protect the important processes and events that occur. Cellular membranes have many functions in the different regions and organelles of a cell. All membranes contain proteins and lipid. However, the amount of each may vary depending on the membrane. Cell membranes are made up of two layers of phospholipids. Phospholipids have hydrophilic (water-loving) heads and hydrophobic (water-repelling) tails. Water exists on both the exterior and interior sides of the membrane. The hydrophobic tails hide behind the hydrophilic heads on both sides of the membrane, forming a non-rigid boundary around the inside of the cell. This non-rigid membrane is held in its shape by microfilaments (thin and solid tubes composed of protein) of cytoskeleton (Membrane structure and function, 2009. ). Proteins determine most of the membrane’s functions. One protein can have several functions. Integral proteins – those that penetrate through the phospholipid bilayer – regulate what comes in and out of a cell. Peripheral proteins are like appendages bound to the surface of the membrane. Peripheral proteins can also act as enzymes and transporters, but they only interact with different parts within the same cell. They help transport small hydrophobic molecules, toxins, and antimicrobial peptides. A cell membrane is a great example of a super molecular structure, where many molecules are ordered into a higher level of organization with emergent properties beyond those of the individual molecules (Membrane structure and function, 2009.). As every part of the eukaryotic cell works together to perform a task and function it seems apparent that without the team work of these components, the world would lack mammals, birds, invertebrates, fish, plants, fungi, and complex single celled organisms. The capabilities of long term functionalities are in conjunction with the growth stemming from this wondrous cell called a eukaryote, a milestone in the evolution of life. of the eukaryotic cell was a milestone in the evolution of life.

Political Psychology Essay Example for Free

Political Psychology Essay Rape victims, survivors of plane crashes, combat veterans, and others who have experienced extremely traumatic events may react emotionally with a posttraumatic stress disorder. This reaction is characterized by involuntary reexperiencing of the traumatic events, especially the original feelings of shock, horror, and fear, in dreams or flashbacks. In addition, victims experience an emotional numbing in relation to everyday events, associated with feelings of alienation from other people. Finally, the emotional pain of this reaction can result in an increase of various symptoms, such as sleep problems, guilt about surviving, difficulty in concentrating, and an exaggerated startle response (Calkins, 1996). The Situation: 9/11   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   A more recent example was the 9/11 incident. The safety and protection that was a seal of American social order was devastated by the 9/11 aftermath. The American people who have gone through the bereavement of either of their parents, brothers, sisters, next of kin, or friends may well be putting up now with overpowering anguish. They will want all the emotional assistance they can obtain and they will need an extended recovery period. Life will never look the same again for any oblivious or sentient American people, but the young people who have upheld personal fatalities may need considerable support from qualified, compassionate specialists (Skene, 2001).   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   The world is not in the slightest peaceful, but at present, there is no security issue taking center stage and the situation in the 9/11 assault is no exception. The 9/11 event had impressed upon America a greater sense of threat at the advent of the new millennium. The 9/11 terrorist attacks incited terror, fury, grief, revulsion, fear, empathy, bewilderment, melancholy, retribution sundry reactions in a nation that was everlastingly changed. To translate the mixed reaction of a private individual in a more politically relevant sense, it is wise to recall how then Senator Edward Livingston could be more important at these times with his words in a debate on the Alien and Sedition Acts: â€Å"†¦we are absurd enough to call ourselves free and enlightened while we advocate principles that would have disgraced the age of Gothic barbarity† (Skene, 2001).   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   They may well not entirely come to terms with the intangible theories thrashed out by counselors or on the television newscast but are prone to be directed in their thoughts by a distinct discernment of validity. They may have dealings with a diversity of sentiments and impressions, and their articulation may subsume mimicking or self-deleterious actions as a way of dealing with their retaliation, fury, and despondency. A number of children at this phase may demonstrate a reluctance to speak of their sentiments and thoughts (Dunn, 2001). The Psychology of Situation: Posttraumatic Stress Disorder   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   The emotional responses of posttraumatic stress can occur immediately following the disaster in an acute form and subside over a period of several months or can persist, becoming a chronic syndrome often called the residual stress pattern. In other cases, people may show no immediate reaction but may experience a full-blown posttraumatic stress disorder after a delay of months or even years. Clinicians are still discovering veterans of World War II and the Korean War who are displaying residual or delayed posttraumatic stress disorders (Hinkle, 2004).   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   This delayed posttraumatic stress syndrome has been a special problem in the case of Vietnam veterans. The problems of many seemed to be made worse by feelings that they had been rejected by an unsympathetic American public and that they had been betrayed by their government and had spent important years of their lives in a wasted effort (Bornstein, 1994). In a study of Vietnam veterans with combat experience, called the â€Å"Forgotten Warrior Project,† John Wilson, a psychologist at Cleveland State University found that (Kagan, 2004): Their suicide rate was 23 to 33 percent higher than the national average. Of those who had been married when they left the United States, 38 percent were divorced within six months after returning. The rate of hospitalization for alcoholism or drinking problems was high and increasing. About half of them still had some emotional problems related to adjustment of civilian life. Brian Seaward is one of the authors that delved into the realm of stress and its health consequences. Seaward notes that aside from the special life events that may be experienced by almost everyone, the most appreciable part of the list is the concept of change.   This implies that change may be in tandem with stress as being a natural part of modern-day living.   That change is the ultimate source of stress.   â€Å"Change becomes a powerful stressor agent because it necessitates adaptation whether it is perceived as a negative or positive experience† (Calkins, 1996). The important features of posttraumatic stress disorder, according to Seaward, are cognition and stress.   Stress affects cognition as anxiety intrudes on one’s consciousness as demonstrated by his unstoppable pangs of emotion, excessive preoccupation with the threatening situation or person, startling reactions, and other unwanted sensations.   It may also impair memory and attention during cognitive tasks.   It may also enhance attention, principally regarding memories of the stressor but repetitive thoughts can perpetuate stress and make it chronic (Calkins, 1996). Seaward also enumerates the emotional signs of health hassle, which are among others, anxiety, irritability, increased aggression, lack of enthusiasm, depression, alienation, and low self-esteem. Indecision, impaired judgments, lack of concentration, lapses in memory, and absentmindedness are some cases of mental drawbacks caused by health troubles. Seaward also shows that there are individuals who are more prone to health troubles than others.   As a result, the ability to cope with poor health is not the same with everyone. For instance, effective coping with stress depends upon how people go about their day-to-day lives. Lifestyle is a key factor in determining the likelihood of an improved posttraumatic stress disorder (Calkins, 1996). Posttraumatic stress disorder is usually coupled with feelings of sadness, discouragement, and dissatisfaction and usually occurs with other symptoms, such as feelings of worthlessness or guilt, decreased energy, and suicidal thoughts. Just as one can have the flu and bladder infection at the same time, it is quite possible, especially in the milder forms of bipolar disorder, to be both abnormally depressed and anxious at the same time (Dunn, 2001). Survivors of extremely traumatic experiences such as 9/11 are sometimes left with special anxiety problems. Some act as if they have been by the shock of their ordeal. Their interest in life is diminished, and they feel alienated from the people around them. Others develop a tendency to remain constantly on the alert, as if disaster is sure to strike again at any moment. They tend also to startle easily. People who have lived through auto crashes may panic at the sound if cars in the night. Those who have endured a mugging or rape may respond with a start whenever they hear strange sounds, and some former prisoners o war and hostages report similar reactions whenever they hear approaching footsteps (Skene, 2001). Survivors of psychological trauma are likely also to keep reliving their experience. They suffer from nightmares in which the shattering episode is reenacted in all its terrifying detail, and by day they find themselves suddenly overwhelmed by harrowing memories whenever they are exposed to situations that even remotely resemble the original event (Garcà ­a, 2005). There is evidence also that mood disorders are related to disturbances in the brain, to such an extent that the symptoms sometimes appear without any provocation. Neither the depressed individual nor the close family and friends can point to any unusually stressful event that might have caused a depression (Dunn, 2001). The Responsive Behavior of the Young and the Old Posttraumatic stress reactions can occur at any age.   Some people get over the traumatic experience of 9/11 soon enough, but others are troubled by symptoms for years on end. A number of elderly concentration camp survivors broke down completely decades after their ordeal was over when they had to be hospitalized for medical reasons. The experience was sufficiently similar to imprisonment to reopen fully the old psychological wounds (Garcà ­a, 2005). Children endure with bereavement a lot in the vein of adults, but with still not as much of discernment (Garcà ­a, 2005). When taking children in hand, it is imperative to recognize that they almost certainly discern more than what parents grant them credit for. Despite the fact that parents inherently desire to safeguard their children from pain, even the youngest kid understands that something is dreadfully wrong and yearns to grasp why the every adult distraught and in tears. This protective attitude merely serves to deprive the child of a chance to learn more about grief management and coping skills, which are indispensable throughout a person’s life, especially when he or she continues live in the absence of any parent who is supposed to shield them from deep sorrow since it is the parent or any close relative who has passed away (Garcà ­a, 2005). It is essential to acknowledge that every child is inimitable in his or her comprehension of the entire process of death. This discernment hinge on their developmental phase, intellectual skills, teachings by parents, teachers, and significant others, personality attributes, imagery in the media, spiritual convictions, and prior incidents of death induced by 9/11 (Hinkle, 2004). Nevertheless, there are a number of consequential factors that will be useful in comprehending how young people live through and cope with death and its aftermath (Dunn, 2001). Coping strategy of an individual’s behavioral and psychological efforts to buffer or minimize environmental and internal demands of posttraumatic stress disorder. Coping means that the person is â€Å"taking charge of his or her own life and is seeking the resources needed to solve current problems† (Garcà ­a, 2005). Seaward furthers that although the coping strategies used by individuals are often distinct, coping temperaments are to a large extent acquired from the social environment. The manner in which people attempt to resolve stressful situations, the cognitive strategies that they use to downsize threat, and the techniques for handling tensions are largely gained from the groups to which they belong.   A person tries to contain the threat and beat stress in two ways, namely focusing on the problem and on the emotions (Bornstein, 1994).   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Other grown-ups are overly wrapped up in their anguish to make an effort to comprehend how the firsthand witnesses of the 9/11 attacks fathom. Other people usually misconstrue the bystander’s demonstration of sentiments, characteristically hold themselves responsible for their fellowmen’s lamentation or rage. Therefore, even though it is likely for the entire people to express their sorrow in the presence of the world, it is essential to impart an elucidation to the terrorist that they can face the future more stalwartly. Discovering how to communicate their anguish, resentment, and apprehension will help Americans to contend with comparable disasters if truly inevitable in the future (Skene, 2001). Conclusion   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   No question about it; the 9/11 incident was the commencement of enlarged hostilities and vigilance as well. The imagery being broadcast was far too excruciating to behold. Mass terrorism is not a regular crime; it is an enormously terrible crime. Tens of thousands, more or less, are the terrorists’ target to inflict fatality or fear upon, and they are more than determined to rule the world. With continued weak will, no wonder how more people would struggle to stay untreated with posttraumatic stress disorder (Skene, 2001). Attitudes toward those with posttraumatic stress disorder have improved over time. Today, individuals with PTSD are fortunate enough to be treated in hospitals and clinics instead of being out away in prisons or asylums. But they are still far from universally accepted either within the family or community. How they are viewed by others can be critical. It can help determine whether they will recover sufficiently to function in society, or to continue to be overwhelmed by their symptoms and even get worse (Calkins, 1996). For a person with posttraumatic stress disorder, there is no clear-cut organic problem, no violation of basic social norms, and no loss of orientation to reality, but the individual shows a lifelong pattern of self-defeating and inadequate coping strategies aimed more at reducing anxiety than at solving life problems. By mental aberrations or psychological scars, the PTSD patient proves to others that he or she is impotent in the face of a threatening world (Dunn, 2001). Our growing understanding of posttraumatic stress disorder does more than enable society to reclaim its familiar stranger. In making sense of posttraumatic stress disorder, we are forced to come to grips with basic conceptions of normality, reality, and social values. And mind loosed from its stable moorings does not just go on its solitary way; it bumps into other minds, sometimes changing their stability (Kagan, 2004). Many PSTD patients are privately treated at home, while others have learned to conceal their disturbances and not act crazy in public. Still others act out their mental problems in ways that society does not judge as mentally disordered; perhaps joining the hate groups, or engaging in socially acceptable forms of violence. Just as unemployment statistics do not include all those who are chronically unemployed and have stopped looking for work, so, too, statistics on posttraumatic stress disorder omit those who suffer in silence, living a marginal existence on the fringes of society (Hinkle, 2004). Indeed, victims of posttraumatic stress disorder caused by 9/11 are usually beset by extremely difficult psychological and social problems. They are likely to be financially strapped, not only because the therapy can be expensive, but also it interferes with productive work. They tend to be outcasts from both the family and society at large. Often the only persons willing to give them serious attention are their fellow PTSD patients, which do not really help as negativity enlarges (Bornstein, 1994). Under such depressive, circumstance, they need considerable help to break free from prejudiced society and get a fresh start in life. References Calkins, Mary Whiton. (1996). An Introduction to Psychology. The Macmillan Company. Bornstein, Marc H. (1994). Psychology and Its Allied Disciplines. Lawrence Erlbaum Associates. Dunn, Edgar S. (2001). Abnormal Psychology. Resources for the Future. Garcà ­a, Cynthia. (2005). â€Å"Developmental Psychology.† Merrill-Palmer Quarterly. Hinkle, Gisela J. (2004). The Development of Modern Sociology: Its Nature and Growth in the United States. Random House. Kagan, Jerome. (2004). â€Å"The Limitations of Concepts in Developmental Psychology.† Developmental Psychology. Skene, Neil. (2001). â€Å"Sacrificing Freedoms in the Name of Saving Them.† Atlanta: Creative Loafing.

Delta Modulation And Demodulation Computer Science Essay

Delta Modulation And Demodulation Computer Science Essay A modem to improve communication system performance that uses multiple modulation scheme comprising modulation technique and encoder combinations. As communication system performance and objective change, different modulation schemes may be selected. Modulation schemes may also be selected upon the communication channel scattering function estimate and the modem estimates the channel scattering function from measurements of the channels frequency (Doppler) and time (multipath) spreading characteristics. An Adaptive sigma delta modulation and demodulation technique, wherein a quantizer step size is adapted based on estimates of an input signal to the quantizer, rather than on estimates of an input signal to the modulator. A technique for digital conferencing of voice signals in systems using adaptive delta modulation (ADM) with an idle pattern of alternating 1s and 0s has been described. Based on majority logic, it permits distortion-free reception of voice of a single active subscriber by all the other subscribers in the conference. Distortion exists when more than one subscriber is active and the extent of this distortion depends upon the type of ADM algorithm that has been used. An LSI oriented system based on time sharing of a common circuit by a number of channels has been implemented and tested. This technique, with only minor changes in circuitry, handles ADM channels that have idle patterns different from alternating single 1s and 0s. This method used for noise reduction. The modulator factor does not require a large amount of data to be represented. Representation is based upon a frequency domain function having particular characteristics. A preferred embodiment of the invention incorporates transform or sub band filtered signals which are transmitted as a modulated analog representation of a local region of a video signal. The modulation factor reflects the particular characteristic. Side information specifies the modulation factor 1.2. Aim: Digital techniques to wirelessly communicate voice information. Wireless environments are inherently noisy, so the voice coding scheme chosen for such an application must be robust in the presence of bit errors. Pulse Coded Modulation (PCM) and its derivatives are commonly used in wireless consumer products for their compromise between voice quality and implementation cost. Adaptive Delta Modulation (ADM) is another voice coding scheme, a mature technique that should be considered for these applications because of its bit error robustness and its low implementation cost. Bandpass modulation techniques encode information as the amplitude, fre ­quency, phase, or phase and amplitude of a sinusoidal carrier. These band ­pass modulation schemes are known by their acronyms ASK (amplitude shift keying), FSK (frequency shift keying), PSK (phase shift keying), and QAM (qua ­ternary amplitude modulation), where keying or modulation is used to indicate that a carrier signal is modified in some manner. The carrier is a sinusoidal signal that is initially devoid of any information. The purpose of the carrier is to translate essentially a baseband information signal to a frequency and wavelength that can be sent with a guided or propagating electro ­magnetic (EM) wave. Bandpass ASK is similar to baseband pulse amplitude modulation (PAM) in Chapter 2, Baseband Modulation and Demodulation, but FSK, PSK, and DM are new non-linear modulation techniques. ASK, FSK, and PSK can be readily extended to multiple level (M-ary) signaling and demodulated coherently or non-coherently. The optimum receiver for bandpass symmetrical or asymmetrical sig ­nals is the correlation receiver, which is developed for baseband signals in Chapter 2. Coherent demodulation uses a reference signal with the same frequency and phase as the received signal. No coherent demodulation of bandpass signaling may use differential encoding of the information to derive the reference signal in the correlation receiver. The observed bit error rate (BER) for a single, in a MATLAB simulation for several bandpass digital communication systems with coherent and non coherent correlation receivers is compared to the theoretical probability of bit error (Pb). Digital communication systems are subject to performance degrada ­tions with additive white Gaussian noise (AWGN). MATLAB simulations of bandpass communication systems are used to investigate the effect upon BER of the performance of the correlation receiver, the reduction in BER with Gray-coding of M-ary data, and binary and quaternary differential signaling. MATLAB simulations of such bandpass digital communication systems and investigations of their characteristics and performance are provided here. These simulations confirm the theoretical expectation for Pb and are the starting point for the what-ifs of bandpass digital communication system design. Finally, the constellation plot depicts the demodulated in-phase and quadra ­ture signals of complex modulation schemes in the presence of AWGN. The opti ­mum decision regions are shown, and the observed BER performance of the bandpass digital communication system can be qualitatively assessed. Delta Modulation: Delta modulation is also abbreviated as DM or Ά-modulation. It is a technique of conversion from an analog-to-digital and digital-to-analog signal. If we want to transmit the voice we use this technique. In this technique we do not give that much of importance to the quality of the voice. DM is nothing but the simplest form of differential pulse-code modulation (DPCM). But there is some difference between these two techniques. In DPCM technique the successive samples are encoded into streams of n-bit data. But in delta modulation, the transmitted data is reduced to a 1-bit data stream. Main features: * The analog signal is similar as a series of segments. * To find the increase or decrease in relative amplitude, we should compare each and every segment of the approximated signal with the original analog wave. * By this comparison of original and approximated analog waves we can determine the successive bits for establishing. * only the change of information is sent, that is, only an increase or decrease of the signal amplitude from the previous sample is sent whereas a no-change condition causes the modulated signal to remain at the same 0 or 1 state of the previous sample. By using oversampling techniques in delta modulation we can get large high signal-to-noise ratio. That means the analog signal is sampled at multiple higher than the Nyquist rate. Principle In delta modulation, it quantizes the difference between the current and the previous step rather than the absolute value quantization of the input analog waveform, which is shown in fig 1. Fig. 1 Block diagram of a Ά-modulator/demodulator The quantizer of the delta modulator converts the difference between the input signal and the average of the previous steps. The quantizer is measured by a comparator with reference to 0 (in 2- level quantizer), and its output is either 1 or 0. 1 means input signal is positive and 0 means negative. It is also called as a bit-quantizer because it quantizes only one bit at a time. The output of the demodulator rises or falls because it is nothing but an Integrator circuit. If 1 received means the output raises and if 0 received means output falls. The integrator internally has a low-pass filter it self. Transfer Characteristics A signum function is followed by the delta modulator for the transfer characteristics. It quantizes only levels of two number and also for at a time only one-bit. Output signal power In delta modulation amplitude it is does not matter that there is no objection on the amplitude of the signal waveform, due to there is any fixed number of levels. In addition to, there is no limitation on the slope of the signal waveform in delta modulation. We can observe whether a slope is overload if so it can be avoided. However, in transmitted signal there is no limit to change. The signal waveform changes gradually. Bit-rate The interference is due to possibility of in either DM or PCM is due to limited bandwidth in communication channel. Because of the above reason DM and PCM operates at same bit-rate. Noise in Communication Systems Noise is probably the only topic in electronics and telecommunications with which every-one must be familiar, no matter what his or her specialization. Electrical disturbances interfere with signals, producing noise. It is ever present and limits the performance of most systems. Measuring it is very contentious almost everybody has a different method of quantifying noise and its effects. Noise may be defined, in electrical terms, as any unwanted introduction of energy tending to interfere with the proper reception and reproduction of transmitted signals. Many disturbances of an electrical nature produce noise in receivers, modifying the signal in an unwanted manner. In radio receivers, noise may produce hiss in the loudspeaker output. In television receivers snow, or confetti (colored snow) becomes superimposed on the picture. In pulse communications systems, noise may produce unwanted pulses or perhaps cancel out the wanted ones. It may cause serious mathematical errors. Noise can l imit the range of systems, for a given transmitted power. It affects the sensitivity of receivers, by placing a limit on the weakest signals that can be amplified. It may sometimes even force a reduction in the bandwidth of a system. Noise is unwanted electrical or electromagnetic energy that degrades the quality of signals and data. Noise occurs in digital and analog systems, and can affect files and communications of all types, including text, programs, images, audio, and telemetry. In a hard-wired circuit such as a telephone-line-based Internet hookup, external noise is picked up from appliances in the vicinity, from electrical transformers, from the atmosphere, and even from outer space. Normally this noise is of little or no consequence. However, during severe thunderstorms, or in locations were many electrical appliances are in use, external noise can affect communications. In an Internet hookup it slows down the data transfer rate, because the system must adjust its speed to match conditions on the line. In a voice telephone conversation, noise rarely sounds like anything other than a faint hissing or rushing. Noise is a more significant problem in wireless systems than in hard-wired systems. In general, noise originating from outside the system is inversely proportional to the frequency, and directly proportional to the wavelength. At a low frequency such as 300 kHz, atmospheric and electrical noise are much more severe than at a high frequency like 300 MHz. Noise generated inside wireless receivers, known as internal noise, is less dependent on frequency. Engineers are more concerned about internal noise at high frequencies than at low frequencies, because the less external noise there is, the more significant the internal noise becomes. Communications engineers are constantly striving to develop better ways to deal with noise. The traditional method has been to minimize the signal bandwidth to the greatest possible extent. The less spectrum space a signal occupies, the less noise is passed through the receiving circuitry. However, reducing the bandwidth limits the maximum speed of the data that can be delivered. Another, more recently developed scheme for minimizing the effects of noise is called digital signal processing (DSP). Using fiber optics, a technology far less susceptible to noise, is another approach. Sources of Noise As with all geophysical methods, a variety of noises can contaminate our seismic observations. Because we control the source of the seismic energy, we can control some types of noise. For example, if the noise is random in occurrence, such as some of the types of noise described below, we may be able to minimize its affect on our seismic observations by recording repeated sources all at the same location and averaging the result. Weve already seen the power of averaging in reducing noise in the other geophysical techniques we have looked at. Beware, however, that averaging only works if the noise is random. If it is systematic in some fashion, no amount of averaging will remove it. The noises that plague seismic observations can be lumped into three categories depending on their source.  · Uncontrolled Ground Motion This is the most obvious type of noise. Anything that causes the ground to move, other than your source, will generate noise. As you would expect, there could be a wid e variety of sources for this type of noise. These would include traffic traveling down a road, running engines and equipment, and people walking. Other sources that you might not consider include wind, aircraft, and thunder. Wind produces noise in a couple of ways but of concern here is its affect on vegetation. If you are surveying near trees, wind causes the branches of the trees to move, and this movement is transmitted through the trees and into the ground via the trees roots. Aircraft and thunder produce noise by the coupling of ground motion to the sound that we hear produced by each. Adaptive Delta Modulation (ADM) Another type of DM is Adaptive Delta Modulation (ADM). In which the step-size isnt fixed. The step-size becomes progressively larger when slope overload occurs. When quantization error is increasing with expensive the slope error is also reduced by ADM. By using a low pass filter this should be reduced. The basic delta modulator was studied in the experiment entitled Delta modulation. It is implemented by the arrangement shown in block diagram form in Figure Figure: Basic Delta Modulation A large step size was required when sampling those parts of the input waveform of steep slope. But a large step size worsened the granularity of the sampled signal when the waveform being sampled was changing slowly. A small step size is preferred in regions where the message has a small slope. This suggests the need for a controllable step size the control being sensitive to the slope of the sampled signal. This can be implemented by an arrangement such as is illustrated in Figure Fig: An Adaptive Delta Modulator The gain of the amplifier is adjusted in response to a control voltage from the SAMPLER, which signals the onset of slope overload. The step size is proportional to the amplifier gain. This was observed in an earlier experiment. Slope overload is indicated by a succession of output pulses of the same sign. The TIMS SAMPLER monitors the delta modulated signal, and signals when there is no change of polarity over 3 or more successive samples. The actual ADAPTIVE CONTROL signal is +2 volt under normal conditions, and rises to +4 volt when slope overload is detected. The gain of the amplifier, and hence the step size, is made proportional to this Control voltage. Provided the slope overload was only moderate the approximation will catch up with the wave being sampled. The gain will then return to normal until the sampler again falls behind. Comparison of PCM and DM When coming to comparison of Signal-to-noise ratio DM has larger value than signal-to-noise ratio of PCM. Also for an ADM signal-to-noise ratio when compared to Signal-to-noise ratio of companded PCM. Complex coders and decoders are required for powerful PCM. If to increase the resolution we require a large number of bits per sample. There are no memories in Standard PCM systems each sample value is separately encoded into a series of binary digits. An alternative, which overcomes some limitations of PCM, is to use past information in the encoding process. Delta modulation is the one way of doing to perform source coding. The signal is first quantized into discrete levels. For quantization process the step size between adjacent samples should be kept constant. From one level to an adjacent one the signal makes a transition of transmission. After the quantization operation is done, sending a zero for a negative transition and a one for a positive transition the signal transmission is achieved. We can observe from this point that the quantized signal must change at each sampling point. The transmitted bit train would be 111100010111110 for the above case. The demodulator for a delta-modulated signal is nothing but a staircase generator. To increments the staircase in positively a one should be received. For negative increments a zero should be receive. This is done by a low pass filter in general. The main thing for the delta modulation is to make the right choice of step size and sampling period. A term overloading is occurred when a signal changes randomly fast for the steps to follow. The step size and the sampling period are the important parameters. In modern consumer electronics short-range digital voice transmission is used. There are many products which uses digital techniques. Such as cordless telephones, wireless headsets (for mobile and landline telephones), baby monitors are few of the items. This digital techniques used Wirelessly communicate voice information. Due to inherent noise in wireless environments the Voice coding scheme chosen. For such an application the presence of robust bit errors must be. In the presence of bit errors Pulse Coded Modulation (PCM) and its derivatives are commonly used in wireless consumer products. This is due to their compromise between voice quality and implementation cost, but these are not robust schemes. Another important voice coding scheme is Adaptive Delta Modulation (ADM). It is a mature technique for consideration for these types of applications due to its robustness in bit error and its low implementation cost. To quantize the difference between the current sample and the predicted value of the next Sample ADM is used. It uses a variable called step height which is used to adjustment of the prediction value of the next sample. For the reproduction of both slowly and rapidly changing input signals faithfully. In ADM, the representation of each sample is one bit (i.e. 1 or 0). It does not require any data framing for one-bit-per-sample stream to minimizing the workload on the host microcontroller. In any digital wireless application there should be Bit errors. In ideal environment most of the voice coding techniques are provided which are good in quality of audio signals. The main thing is to provide good audio signals in everyday environment, there may be a presence of bit errors. For different voice coding methods and input signals the traditional performance metrics (e.g. SNR) does not measure accurately in audio quality. . Mean Opinion Score (MOS) testing is the main important parameter which overcomes the limitations of other metrics by successfully in audio quality. For audio quality the MOS testing is used. It is a scale of 1 to 5 which tells the audio quality status. In there 1 represents very less (bad) speech quality and 5 represents excellent speech quality. A toll quality speech has a MOS score of 4 or higher than it. The audio quality of a traditional telephone call has same MOS value as above. The below graphs shows the relationship between MOS scores and bit errors for three of the most common voice coding schemes. Those are CVSD, ÃŽÂ ¼-law PCM, and ADPCM. A continuously Variable Slope Delta (CVSD) coding is a member of the ADM family in voice coding schemes. The below graph shows the resulted audio quality (i.e. MOS score). All three schemes explain the number of bit errors. As the no of bit errors increases the graph indicates that ADM (CVSD) sounds better than the other schemes which are also increase. In an ADM design error detection and correction typically are not used because ADM provides poor performance in the presence of bit errors. This leads to reduction in host processor workload (allowing a low-cost processor to be used). The superior noise immunity significantly reduced for wireless applications in voice coding method. The ADM is supported strongly by workload for the host processor. The following example shows the benefits of ADM for wireless applications and is demonstrated. For a complete wireless voice product this low-power design is used which includes all of the building blocks, small form-factor, including the necessary items. ADM voice codec Microcontroller RF transceiver Power supply including rechargeable battery Microphone, speaker, amplifiers, etc. Schematics, board layout files, and microcontroller code written in C. Delta modulation (DM) may be viewed as a simplified form of DPCM in which a two level (1-bit) quantizer is used in conjunction with a fixed first-order predictor. The block diagram of a DM encoder-decoder is shown below.   The dm_demo shows the use of Delta Modulation to approximate input sine wave signal and a speech signal that were sampled at 2 KHz and 44 KHz, respectively. The source code file of the MATLAB code and the out put can be viewed using MATLAB. Notice that the approximated value follows the input value much closer when the sampling rate is higher. You may test this by changing sampling frequency, fs, value for sine wave in dm_demo file. Since DM (Delta Modulator) approximate a waveform Sa(t) by a linear staircase function, the waveform Sa(t) must change slowly relative to the sampling rate. This requirement implies that waveform Sa(t) must be oversampled, i.e., at least five times the Nyquist rate. Oversampling means that the signal is sampled faster than is necessary. In the case of Delta Modulation this means that the sampling rate will be much higher than the minimum rate of twice the bandwidth. Delta Modulation requires oversampling in order to obtain an accurate prediction of the next input. Since each encoded sample contains a relatively small amount of information Delta Modulation systems require higher sampling rates than PCM systems. At any given sampling rate, two types of distortion, as shown below limit the performance of the DM encoder.   Slope overload distortion: This type of distortion is due to the use of a step size delta that is too small to follow portions of the waveform that have a steep slope. It can be reduced by increasing the step size. Granular noise: This results from using a step size that is too large too large in parts of the waveform having a small slope. Granular noise can be reduced by decreasing the step size. Even for an optimized step size, the performance of the DM encoder may still be less satisfactory. An alternative solution is to employ a variable step size that adapts itself to the short-term characteristics of the source signal. That is the step size is increased when the waveform has a step slope and decreased when the waveform has a relatively small slope. This strategy is called adaptive DM (ADM). Block Diagram Adaptive Delta Modulation for Audio Signals: While transmitting speech for e.g. telephony the transfer rate should be kept as small as possible to save bandwidth because of economic reason. For this purpose Delta Modulation, adaptive Delta modulation, Differential Pulse-Code modulation is used to compress the data. In this different kind of Delta modulations and Differential Pulse Code modulations (DPCM) were realized to compress audio data. At first the principal of compressing audio data are explained, which the modulations based on. Mathematical equations (e.g. Auto Correlation) and algorithm (LD recursion) are used to develop solutions. Based on the mathematics and principals Simulink models were implemented for the Delta modulation, Adaptive Delta modulation as well as for the adaptive Differential Pulse Code modulation. The theories were verified by applying measured signals on these models. Signal-to-noise ratio Signal-to-noise ratio (often abbreviated SNR or S/N) is an electrical engineering measurement, also used in other fields (such as scientific measurement or biological cell signaling), defined as the ratio of a signal power to the noise power corrupting the signal. A ratio higher than 1:1 indicates more signal than noise. In less technical terms, signal-to-noise ratio compares the level of a desired signal (such as music) to the level of background noise. The higher the ratio, the less obtrusive the background noise is. In engineering, signal-to-noise ratio is a term for the power ratio between a signal (meaningful information) and the background noise: where P is average power. Both signal and noise power must be measured at the same and equivalent points in a system, and within the same system bandwidth. If the signal and the noise are measured across the same impedance, then the SNR can be obtained by calculating the square of the amplitude ratio: where A is root mean square (RMS) amplitude (for example, typically, RMS voltage). Because many signals have a very wide dynamic range, SNRs are usually expressed in terms of the logarithmic decibel scale. In decibels, the SNR is, by definition, 10 times the logarithm of the power ratio: Cutoff rate For any given system of coding and decoding, there exists what is known as a cutoff rate R0, typically corresponding to an Eb/N0 about 2 dB above the Shannon capacity limit. The cutoff rate used to be thought of as the limit on practical error correction codes without an unbounded increase in processing complexity, but has been rendered largely obsolete by the more recent discovery of turbo codes. Bit error rate In digital transmission, the bit error rate or bit error ratio (BER) is the number of received binary bits that have been altered due to noise and interference, divided by the total number of transferred bits during a studied time interval. BER is a unit less performance measure, often expressed as a percentage number. As an example, assume this transmitted bit sequence: 0 1 1 0 0 0 1 0 1 1, And the following received bit sequence: 0 0 1 0 1 0 1 0 0 1, The BER is in these case 3 incorrect bits (underlined) divided by 10 transferred bits, resulting in a BER of 0.3 or 30%. The bit error probability pe is the expectation value of the BER. The BER can be considered as an approximate estimate of the bit error probability. The approximation is accurate for a long studied time interval and a high number of bit errors. Factors affecting the BER In a communication system, the receiver side BER may be affected by transmission channel noise, interference, distortion, bit synchronization problems, attenuation, wireless multipath fading, etc. The BER may be improved by choosing a strong signal strength (unless this causes cross-talk and more bit errors), by choosing a slow and robust modulation scheme or line coding scheme, and by applying channel coding schemes such as redundant forward error correction codes. The transmission BER is the number of detected bits that are incorrect before error correction, divided by the total number of transferred bits (including redundant error codes). The information BER, approximately equal to the decoding error probability, is the number of decoded bits that remain incorrect after the error correction, divided by the total number of decoded bits (the useful information). Normally the transmission BER is larger than the information BER. The information BER is affected by the strength of the forward error correction code. CHAPTER II Pulse-code modulation: Pulse-code modulation (PCM) is a method used to digitally represent sampled analog signals, which was invented by Alec Reeves in 1937. It is the standard form for digital audio in computers and various Compact Disc and DVD formats, as well as other uses such as digital telephone systems. A PCM stream is a digital representation of an analog signal, in which the magnitude of the analogue signal is sampled regularly at uniform intervals, with each sample being quantized to the nearest value within a range of digital steps. PCM streams have two basic properties that determine their fidelity to the original analog signal: the sampling rate, which is the number of times per second that samples are taken; and the bit-depth, which determines the number of possible digital values that each sample can take. Digitization as part of the PCM process In conventional PCM, the analog signal may be processed (e.g. by amplitude compression) before being digitized. Once the signal is digitized, the PCM signal is usually subjected to further processing (e.g. digital data compression). PCM with linear quantization is known as Linear PCM (LPCM). Some forms of PCM combine signal processing with coding. Older versions of these systems applied the processing in the analog domain as part of the A/D process; newer implementations do so in the digital domain. These simple techniques have been largely rendered obsolete by modern transform-based audio compression techniques. * DPCM encodes the PCM values as differences between the current and the predicted value. An algorithm predicts the next sample based on the previous samples, and the encoder stores only the difference between this prediction and the actual value. If the prediction is reasonable, fewer bits can be used to represent the same information. For audio, this type of encoding reduces the number of bits required per sample by about 25% compared to PCM. * Adaptive DPCM (ADPCM) is a variant of DPCM that varies the size of the quantization step, to allow further reduction of the required bandwidth for a given signal-to-noise ratio. * Delta modulation is a form of DPCM which uses one bit per sample. In telephony, a standard audio signal for a single phone call is encoded as 8000 analog samples per second, of 8 bits each, giving a 64 kbit/s digital signal known as DS0. The default signal compression encoding on a DS0 is either ÃŽÂ ¼-law (mu-law) PCM (North America and Japan) or A-law PCM (Europe and most of the rest of the world). These are logarithmic compression systems where a 12 or 13-bit linear PCM sample number is mapped into an 8-bit value. This system is described by international standard G.711. An alternative proposal for a floating point representation, with 5-bit mantissa and 3-bit radix, was abandoned. Where circuit costs are high and loss of voice quality is acceptable, it sometimes makes sense to compress the voice signal even further. An ADPCM algorithm is used to map a series of 8-bit  µ-law or A-law PCM samples into a series of 4-bit ADPCM samples. In this way, the capacity of the line is doubled. The technique is detailed in the G.726 standard. Later it was found that even further compression was possible and additional standards were published. Pulse code modulation (PCM) data are transmitted as a serial bit stream of binary-coded time-division multiplexed words. When PCM is transmitted, pre modulation filtering shall be used to confine the radiated RF spectrum. These standards define pulse train structure and system design characteristics for the implementation of PCM telemetry formats. Class Distinctions and Bit-Oriented Characteristics The PCM formats are divided into two classes for reference. Serial bit stream characteristics are described below prior to frame and word orient

Internet and Technology Hazards :: Essays Papers

Internet and Technology Hazards Computers and the Internet are great items for the household, but along with these advantages there are disadvantages. They are constantly changing the way that we live and do business. The Internet puts tons of information at a click of a button. This information is a great educational tool for children. The Internet can be very dangerous to young children, and there is also research being done now about possible problems that adults have with computers. It is the parents’ responsibility to make sure that the Internet is a safe place for their children. I read an article called Internet and Computer Technology Hazards: Perspectives For Family Counseling. The author of this article is Jo Ann Oravec. It appeared in the British Journal of Guidance & Counseling, in August of 2000. I agreed with almost everything that she wrote. It was an interesting and compelling article. The main reason that people watch the news, and look through various sources of information is to make sure that their homes are safe from possible nuisances in the neighborhood or from severe weather. When working with a network, a series of computers tied together, there are new and dangerous hazards that can go unnoticed. Viruses and security breaches by hackers are a few of the hazards that they may encounter. The Internet is being used more and more for daily life. For many families the meaning of â€Å"Neighbor† is quickly changing from the people that live close to on-line relationships that they have. Now many people are doing their shopping, banking and other everyday activities on-line. Some people are also using the Internet to stay in touch with family members that live elsewhere. As families perform important educational and community activities on-line the meaning of home is changing at a rapid pace. Some families are worried that the Internet could have an effect on their privacy. The privacy for a family is necessary to raising their children. Today it is possible to get information on nearly anyone via the Internet. Crimes such as hacking and identity theft are the main concerns of these families. Children may accidentally give out family information to marketers by filling out their on-line surveys. Many families believe that they could prevent these things from happening by shutting off contact with the Internet.

The Yellow Wallpaper :: Charlotte Gilman

In a female oppressive story about a woman driven from postpartum depression to insanity, Charlotte Gilman uses great elements of literature in her short story, The Yellow Wallpaper. Her use of feminism and realism demonstrates how woman's thoughts and opinions were considered in the early 1900?s. The theme of this story is feminism. Having gone through postpartum depression herself, Gilman?s story was strongly personal. During the time period that she wrote it, woman?s rights were limited. The character in this story felt she knew ways to recover herself from her depression, or ?baby blues?. Baby blues also known as postpartum depression is a form of severe depression after pregnancy delivery that requires treatment. Women may feel sadness, despair, anxiety, or irritability. The woman from the story wanted to get well and wanted to work. However, as a woman she was forbid by her husband to do this. Instead she was isolated from society, from being able to work, do the things she loved, or take care of her baby. The Yellow Wallpaper was written as a realism story. It showed how woman felt they had the same opportunities as men in their personal choices. In this story, the woman expressed her worries to her husband who through good intentions, required that his wife stay in bed 24/7, and not do any of the things she would normally do. In effect his wife became worse until she reached the limit. The behavior of the husband at this time was completely normal. Men were the higher power over women and women, like the one in this story, felt that they couldn?t stand count for themselves.

Dagoberto Gilb :: Essays Papers

Dagoberto Gilb Dagoberto Gilb was born in Los Angeles in 1950. A mix of gritty humor, mundane terror, and economic misfortune distinguishes his short stories. His life has been neither easy nor subdued, and these influences are reflected in his writing style and choice of subject matter. The short story entitled â€Å"Love in L.A.,† by Dagoberto Gilb, shows how one can see many reasons in seeing irony and even satire by the story’s title and how all is stories combine in someway. Dagoberto Gilb’s childhood was spent running wild in a bad part of Los Angeles. At the age of eighteen, Gilb decided to attend college, obtaining degrees in Philosophy and Religious studies. It was during this period that he began to keep personal notebooks. Following completions of a master’s degree, he became a journeyman carpenter from 1976 – 1991, which provided the flexibility to devote large blocks of time to writing. He is married to a woman named Rebeca, and has two children named Antonio and Ricardo. Gilb worked in the Department of English at the University of Texas in 1988, the University of Arizona in 1992, and the University of Wyoming in 1994 (â€Å"Dagoberto Gilb†) Literary magazines were not remotely interested in publishing Gilb’s stories, which focus primarily on the professional and personal struggles of working-class Mexican Americans. But his unapologetic stories about working-class Mexican Americans have made him a voice of his people (Reid130). Gilb’s short stories are set vividly in cites of the desert Southwest and usually feature a Hispanic protagonist who is good-hearted but often irresponsible and is forever one pink slip or automotive breakdown away from disaster (Reid130). Gilb was persuaded to submit some of the 750 pages of his unpublished stories to the National Endowment of the Arts, and, when he won a grant, it enabled him to take time to put together a collection of his work. That was The Magic of Blood, which was published in 1993 and won him a PEN Hemingway Award. The following year, recognition abounded in the form of prestigious literary awards and a flood of critical attention for The Magic of Blood (â€Å"The Magic of Blood†63-74) Gilb has earned many awards including the Institute of Letters Award for best book of fiction and best short story in 1993. In El Paso, he gave up on New York publishing and sold his story collection to the University of New Mexico Press. Dagoberto Gilb :: Essays Papers Dagoberto Gilb Dagoberto Gilb was born in Los Angeles in 1950. A mix of gritty humor, mundane terror, and economic misfortune distinguishes his short stories. His life has been neither easy nor subdued, and these influences are reflected in his writing style and choice of subject matter. The short story entitled â€Å"Love in L.A.,† by Dagoberto Gilb, shows how one can see many reasons in seeing irony and even satire by the story’s title and how all is stories combine in someway. Dagoberto Gilb’s childhood was spent running wild in a bad part of Los Angeles. At the age of eighteen, Gilb decided to attend college, obtaining degrees in Philosophy and Religious studies. It was during this period that he began to keep personal notebooks. Following completions of a master’s degree, he became a journeyman carpenter from 1976 – 1991, which provided the flexibility to devote large blocks of time to writing. He is married to a woman named Rebeca, and has two children named Antonio and Ricardo. Gilb worked in the Department of English at the University of Texas in 1988, the University of Arizona in 1992, and the University of Wyoming in 1994 (â€Å"Dagoberto Gilb†) Literary magazines were not remotely interested in publishing Gilb’s stories, which focus primarily on the professional and personal struggles of working-class Mexican Americans. But his unapologetic stories about working-class Mexican Americans have made him a voice of his people (Reid130). Gilb’s short stories are set vividly in cites of the desert Southwest and usually feature a Hispanic protagonist who is good-hearted but often irresponsible and is forever one pink slip or automotive breakdown away from disaster (Reid130). Gilb was persuaded to submit some of the 750 pages of his unpublished stories to the National Endowment of the Arts, and, when he won a grant, it enabled him to take time to put together a collection of his work. That was The Magic of Blood, which was published in 1993 and won him a PEN Hemingway Award. The following year, recognition abounded in the form of prestigious literary awards and a flood of critical attention for The Magic of Blood (â€Å"The Magic of Blood†63-74) Gilb has earned many awards including the Institute of Letters Award for best book of fiction and best short story in 1993. In El Paso, he gave up on New York publishing and sold his story collection to the University of New Mexico Press.

‘Pride and Prejudice’, ‘Tea in the Wendy House’, and ‘He said’ Essay

Pride and Prejudice is a novel of love and marriage and how people have prejudices about love. Pride is involved as it blurs the seeing of true love. Jane Austen displays this as she was part of society and she had first-hand experience of this. In Tea in the Wendy House and He Said, there is an visible change in the role of society and attitudes to love and marriage. This is because of the different times each novel was written. Jane Austen does not make the subject of marriage favourable, as she never writes about a completely happy marriage. For example Mr and Mrs Bennet’s relationship, this is not an example of a good marriage as Mr Bennet is always taunting Mrs Bennet. ‘Or you may send them by themselves, will be better, for you are as handsome of any of them’. Here Mr Bennet is ridiculing Mrs Bennet by saying she should go and visit Mr Darcy as she may end up marrying him, as she is just as beautiful. This was one of Austen’s intentions to show that the society she lived in was superficial. Another example of a bad marriage is of Charlotte Lucas and Mr Collins. Charlotte is only marrying Mr Collins, as it is her last resort because she is seen as a spinster at the age of 27. Usually girls are married off at young ages, as it is their only ambition. This is shown in Pride and Prejudice, but in Tea in the Wendy House, even though Lyn has an opportunity of marriage she is not hap py. She feels pressured into marrying Graham and doesn’t have the chance to vent her true feelings properly. She feels she is also trapping Graham into marrying her and becoming a father. ‘I didn’t say anything, because Graham was so enthusiastic’. She is worried about other people’s feelings and hers but does not get the chance to show them. Whereas in He Said there is no chance of Bev getting married to Errol, as he is too irresponsible. This is an example of the way society has changed drastically. In Pride and Prejudice it was expected for girls to get married straight away and the most important thing in their life. In Tea in the Wendy House there was some expectation but not as much. In He Said society has changed so much that Errol does not think he needs to propose to Bev, even though she is pregnant. This also shows the attitudes to sex before marriage. As Austen shows more bad marriages than good, there were a few happy marriages, as they contain an equality of character traits between the couple. Elizabeth was too prejudiced to realise her true feelings and Mr Darcy was too proud. Even though she does finally realise Darcy’s good qualities. ‘She began to comprehend that he was exactly the man, in disposition and talents, would suit her’. This is the opposite in He Said, as Bev finally realises that she is stronger than Errol, and how she can cope without him. ‘ I don’t care if I never see him again’. In Jane Austen’s novels the valuable marriage is usually because of chance. If Elizabeth did not read Darcy’s letter and witness the elopement of Lydia and Wickham, she would have realised how much she values him. This is the opposite in Tea and the Wendy House as Graham and Lyn had known each other since their teens and so had got to know each other better. ‘I was fourteen and Graham was fifteen’. As Errol and Bev’s relationship in He Said is just based on sex and so there was no previous acknowledgement of character traits. Intervention played its part in the prevention of Darcy and Elizabeth getting married. Elizabeth’s prejudices intervene and prevent the marriage at first. This does not happen to the main character of Tea in the Wendy House but there is some intervention from Lyn’s parents. In Pride and Prejudice Elizabeth’s mum is always pushing her to get the best man she can. She is very bossy and likes to get what she wants. In Tea and the Wendy House it is also Lyn’s mother that has an intervening nature as she is making the wedding dress. ‘She was busy, giving final touches to the dress’. There is a difference in He Said, as her parents do not intervene. Although her father does not want to get involved with her situation, he feels no way in abandoning her when she needs them most. As her father is a minister of a church, he has strict religious beliefs but as he does not want to help he comes across as a bully. ‘If that harlot crosses my doorstep, I will strike her down. Then he had gone to church’. This contradicts his religious views. Status is another problem in the prevention of the marriage of Darcy and Elizabeth. ‘Elizabeth’s astonishment was beyond expression. She stared coloured doubted and was silent. This he considered enough encouragement’. Darcy thought that Elizabeth would have said yes when he first proposed, as she may never get a better offer as that one as he is much higher in status than she was. Darcy has a lot more money than the Bennet’s. In this time it was seen as better if you could marry a man with a large house and very good income. This was so he could provide for his wife when she had children but also to show-off to others. In He Said money is still important to Bev as she is by herself without a husband, so she has to fend for herself. She is struggling and in a poor job. She has not got the financial support from her parents like Lyn in Tea in the Wendy House. Bev’s prospects are limited because of lack of money and there is a slight suggestion that th is will not change much. There is a similarity between pride and prejudice and Tea in the Wendy House. This is because Lyn and Elizabeth both have some financial support from their parents, although it was not the most important thing in Tea in the Wendy House. Lyn’s mother puts it across as a bonus to the marriage, but having a good job is quite important. ‘ And he’s got a job, and course there’s the house. You really struck gold there’. Mr Collins also demonstrates the status prevention, as he expects her to say yes but it comes across as quite pompous. ‘ I am to inherit this estate after the death of your father’. He is openly stating that he will own Elizabeth’s house, as if it was nothing. In the actual proposal of Mr Collins to Elizabeth it was quite formal as he asked permission, which was expected in those times. This differs in the proposal of Graham to Lyn. He seemed embarrassed, it was not very formal but still had the decency to propose. ‘I told you it was corny, but will you, will you marry me?’ There is n o proposal in He Said. Errol obviously does not believe he needs to propose; not formal or gentleman-like. Judgement plays quite a big part of pride and prejudice, as it was a very judgmental society. People are always being judged. Elizabeth prides herself on good understanding of what people are like generally. ‘ The extravagance and general profligacy which he scripted exceedingly shocked her’. This shows how she was wrong about Mr Wickham and Darcy made her realise this in the letter he wrote to her after he proposed. Good judgement is being to see past deception, pride arrogance and hypocrisy. ‘She tried to recollect some instance of goodness, some distinguished trait of integrity’. This shows Elizabeth frantically trying to have some recollection that Mr Wickham was not deceptive and devious. Like Mr Darcy explained in the letter. This is a bad judgement that Elizabeth has made, just like the bad judgement of Errol by Bev. She thought he was going to stand by her throughout the pregnancy, but he does not. ‘I don’t want anything to come between us†¦now he would not speak to her’. This shows how shallow and unreliable Errol is. Although she knows Errol is not going to face up to his consequences, it does not stop her from fantasizing about the way she would like things to be between her and Errol. ‘Imagining Errol holding her tightly, perhaps his voice breaking with emotion’. Elizabeth’s first meeting with Mr Wickham compared to her first meeting with Mr Darcy it was not surprised she preferred Mr Wickham. This made her very shocked at the proposal from Mr Darcy. This pitfall almost brings Elizabeth to lose her future husband, although she does come to terms with her mistakes and corrects them. ‘How despicably I have acted, I who have prided myself on my discernment and gratified my vanity, pleased with the preference of one and offended by the neglect of another’. This reveals that Elizabeth has recognised her mistakes and how she has treated both men. Darcy has also overcome his arrogance and pride. Austen believes that a happy marriage is built on good judgement and so introduces a genuine perception. So they see each other for who they really are. Tea in the Wendy House, Lyn’s perception of Graham was not clear, she was not being clear about her feelings. The writer used the Wendy House as symbolism to show that however perfect something seems, it may not make you happy. Although at the end with the last Wendy House reference, you are left wondering if Lyn will ever be happy, but also there is no mention of Graham being with her, in this ideal world. ‘The bright blue walls seem to be closing in around her, the ceiling is coming nearer and nearer. She is a mummy. It doesn’t matter that she can’t get out’. It is making her conform to the stereotypes of typical women. Bev in He Said has made a journey of self-knowledge, from hating Errol for not standing by her to realising she can cope without him, and go along with the pregnancy by herself. From the pressures of society, the doctor telling her it would be best to get an abortion, her father throwing her out, living in a gritty flat and working in a dead end job. Bev has made a miraculous journey from where she was, to feeling confident of having the baby by herself. Elizabeth goes against her time by refusing two marriage proposals, and marrying for true love. In her society a sexual relationship before marriage was seen as unacceptable and shame would be brought onto the family. This is a contrast between our time and Jane Austen’s time. Lyn is pregnant before she is getting married, this is also the case in He Said apart from Bev is not getting married, and so has to cope on her own. This indicates the age and time Elizabeth lived in. Wickham was this type of person who would deceive women into thinking he loves them but then leaves them. This is what he did with Lydia Bennet. This was not the first he tried; he also tried with Darcy’s younger sister. He gambles and lives loosely and does not give a second thought to his sexual immoralities. Sex before marriage is seen as the main corrupt. Wickham’s character is similar to that of Errol. He does not give a second thought to the consequences of his action. ‘ With the faint smell of urine around her realising that probably some man had walked away from relieving himself without a backward thought about the results. Just like Errol’. Lydia’s relationship with Wickham has effected her reputation because of the elopement. Wickham’s love for Lydia is not true. This is the opposite with Lyn and Graham’s relationship. Graham is truly in love with Lyn, but it is Lyn that has the insecurities and does not feel true love. ‘ There is no one in the Wendy house except Lyn. Mandy isn’t there. Graham isn’t there’. This shows how maybe in the end she will be by herself without no one. In Elizabeth’s time courtship between two people would not have lasted quite long, so Wickham and Lydia were not truly in love, it was most probably infatuation. ‘His belief that Wickham never intended to go there or to marry Lydia at all’. Jane Austen was a person in this society and time, which believed marriage, was the most important thing for a young girl. This would lead to prejudices about how much money did the husband have and of what status was he. Jane Austen shows through pride and prejudice that she would not have married because it was convenient but because of love much like Elizabeth. Society has changed, as evident in He said. From wanting marriage as an ambition, to Errol not needing to propose, it does not mean the society has got any better. Society and other people’s thoughts all contribute to prevention of some marriages, even nowadays.