Pride and Prejudice Analysis Essay

Elizabeth Bennet receives two proposals; one from Mr Collins and one from Mr Darcy. Mr Collins was a tall and heavy looking man of twenty-five years. Although he was polite and well mannered he was also pompous and had a self-inflated ego. He always made ‘never ending speeches about nothing’ and bored everyone to death. Mr Collins flattered everyone constantly but sometimes inappropriately. ‘He begged to know which of his fair cousins the excellence of it’s cooking was owed.’ -By this, Mrs Bennet was offended and assured him they were in fact able to keep a good cook. This showed his lack of judgement in when to compliment. He was also quite absurd and Mr Bennet’s sarcasm often went completely unnoticed. For example, on page 54, Mr Bennet asked if his flatteries were prepared and Mr Collins admitted that sometimes he would think of them for his amusement! Lady Catherine de Bourgh who was his patroness employed him. He grovelled to her constantly as she paid his way; because of her, he was middle/upper class. He was a clergyman at Hunsford near Rosings, Lady Catherine de Bourgh’s home. When Mr Bennet dies, Mr Collins will inherit Longburn, as Mr Bennet cannot leave the house to his wife; women couldn’t inherit. In Mr Collins’ letter, he proposes to make peace with the family. Mr Darcy on the other hand was very good looking. ‘He soon drew the attention of the room by his fine tall person, handsome features, noble mien†¦Ã¢â‚¬â„¢ He is also described as ‘a fine figure of a man’. But he was soon to be discovered to be ‘proud above his company’. He was clever, but at the same time he was ‘haughty, reserved and fastidious’. He owned Pemberly Estate and got one thousand a year. -He was upper class and he knew it; ‘He had seen a collection of people in whom there was little beauty and no fashion for none of whom he had felt the smallest interest.’ Darcy and Bingley had a good friendship despite many differences. ‘Bingley was sure of being liked wherever he appeared; Darcy was continually giving offence.’ Darcy had no sense of humour and admitted it. He couldn’t see the funny side of life whereas Bingley was light hearted and liked to enjoy everything he did. In the past Wickam and Darcy had a disagreement. Mr Darcy’s father had promised Wickam a place in the church but when he died Darcy refused to help him. Mr Collins first hints on his future plans in his letter to the Bennets when he writes; ‘I cannot be otherwise than concerned at the means of injuring your amiable daughters, and beg leave to apologise for it, as well as to assure you of my readiness to make them every possible amends.’ On the first day of staying at Longburn, he, in a conversation to Mrs Bennet said; ‘I can assure the young ladies that I come prepared to admire them.’ -Here he gave Mrs Bennet a small glimpse of his intentions. Jane Austin then gave it away saying that now having a good house and income; Mr Collins was in want of a wife. He was also pleasing Catherine de Bourgh who thought he should marry. So for the first evening Jane was the settled choice being not only the eldest, but the prettiest -this was, until he was informed by Mrs Bennet that she was soon to be engaged to Bingley (exaggeration). Then at the Netherfield Ball he asked Lizzy to dance several times and she realised she was the chosen one out of the five sisters. Mr Darcy on the other hand was far from admiring Lizzy at first and when Mr Bingley suggested he dance with her at the Meryton Ball he replied that he had not the least intention of dancing. -Bingley was dancing with the only good looking girl in the room. Here he was referring to Jane. He said Lizzy was ‘tolerable, but not handsome enough to tempt me.’ Then at Sir William Lucas’s party, William tried to pair up the two of them and Darcy did not resist, but Lizzy brushed him off with; ‘I have not the least intention of dancing.’ -this was pay back. It was at this party that Darcy realised his true feelings for her. At Netherfield when Jane went to stay, she fell ill and Lizzy being worried came to visit. Here, she noticed that Darcy was constantly watching her. Miss Bingley who secretly liked Darcy, in seeing that he was drawn to Lizzy tried to turn him against her. But all in vain, for whatever she said, he just stuck up for Elizabeth. Miss Bingley, in Mr Darcy’s defending her said; ‘I am afraid Mr Darcy that this adventure has rather affected your admiration for her fine eyes.’ I think when she says this she’s half-teasing and half jealous of him liking her. Before proposing, Mr Collins said to Mrs Bennet, ‘May I hope madam, for your interest with your fair daughter Elizabeth, when I solicit for the honour of a private audience with her in the course of this morning?’ -Here, he was basically asking Mrs Bennet’s permission to propose. He then launched straight into his ‘speech’. Mr Darcy came to visit Lizzy and at first made light conversation, asking about her health. Then there was an awkward silence where he must have been trying to think of how to start before proceeding. -Differences are already showing through. Mr Collins first said he’d chosen Lizzy almost as soon as he’d met her (which was a lie) and went on to specify his reasons for marrying her. He, as a clergyman wanted to set an example to the rest of the parish, he thought it would make his happy and he was following Lady Catherine de Bourgh’s advice. He’d obviously planed out his speech carefully but in his reasons, he had not mentioned that he was in love with her! Darcy on the other hand offered his hand in marriage because he did love her and his opening sentence expressed this clearly; ‘In vain I have struggled. It will not do. My feelings will not be repressed. You must allow me to tell you how I admire and love you.’ Mr Collins also made several insults to Lizzy when proposing to her without even realising it! For instance, he said that if she refuses, she my never get another offer. He also reminds her that if she stays single, all she may ever be entitled to is twenty-five pounds when her mother dies. Darcy put his foot in it too. After saying how much he loved her, he went on to say that it was not his wish to do so with her connections and status; ‘His sense of inferiority -of the family obstacles which judgement had always opposed to inclination.’ When he was turned down he thought she was just offended; ‘Could you expect me to rejoice in the inferiority of your connections? -To congratulate myself on the hope of relations, your connections?’ He also admitted to trying to split up Jane and Darcy and even ‘rejoiced’ in his success of doing so. In response to rejection, Mr Collins thinks Lizzy is playing hard to get and says this is to be expected of a lady. He goes on to say all the good materialistic reasons to marry him forgetting to mention things like love. He acts as if marrying would be a good investment for Lizzy or something. He then assured her that both of her parents approved of the marriage. Mr Darcy in response to rejection is shocked and angry but manages to control himself. He asked why he had been refused and thought she must be offended by what he had said earlier; ‘Could you expect me to rejoice in the inferiority of your connections?’ But after saying these words he accepted her answer. Both proposals were made for very different reasons; Mr Collins obviously proposed for convenience, whereas Mr Darcy was in love. Both men also reacted in different ways when turned down; although Mr Collins couldn’t take the rejection, he was not actually bothered about anything other than having his male pride hurt. -Darcy must have been extremely upset, to him Lizzy was the woman he wanted to spend the rest of his life with but he tried not to show his emotions. They both involved a lot of snobbery in their proposal speeches. They thought that Lizzy would not reject someone of the higher class and she should be grateful that she was chosen out of all the other girls; both reminded her constantly about her status. Mr Collins was more personal mentioning both what would happen when her mother and father died but Lizzy got more angry at Darcy because of things he has said and done in the past. Mr Collins and Mr Darcy both said in much detail all the pros and cons of the marriage. In conclusion, both proposals have some similarities but they differ in the essential requirement of love.

Alkylation agents as Chemotherapeutic agents

Chemotherapy simply means the use of chemicals to treat disease by destroying microorganism or cancerous or tumor cells. Generally, chemotherapy acts by destroying rapidly dividing cells although the mechanism that leads to this differs. Several divisions of chemotherapy agents exist such as the anti-metabolites, plant alkaloids the topoisomerase inhibitors, anthracyclines and alkylation agents which are discussed in this paper. Generally, alkylation agents work by addition of alkyl groups to the guanine of DNA molecule at number 7 atom of imidazole group (Siddik, 2002).Alkylation agent’s significance The name originates from their ability to alkylate several nuclophilic functional categories in certain cellular conditions . Examples of alkylation agents are carboplatin, oxaliplatin and cisplatin that work by covalent bond formation with specific carboxyl, sulphurhydril and phosphate groups in molecules of biological importance (Siddik, 2002). These are regarded as platinum-ba sed alkylation agents. These platinum based alkylation agent are divided into first, second and third generations made up of cisplatin,caboplatin and oxaliplatin respectively.They found important use in treatment of mesothelioma . They work at all stage of cell cycle and impair cellular DNA synthesis as well as transcption (Siddik, 2002). Cisplatin is used to treat lung and testicular cancers. Other alkylation agents include chlorambucil, mechlorethamine, ifosfamide and cyclophosphamide as well as procarbazine and bulsulphan. Alkylation agents are effective at all stage of cell cycle making them useful in treating wide range of cancer especially the slow growing ones like solid tumor and leukemia (Pizzo & Poplack, 2006)All share biochemical mechanism although they may differ in their clinical effects. The significance of alkylation agents is not only seen in treatment of leukemia, lymphomas and solid tumors. They are also found significant in the treatment of non neoplastic conditio ns such as cyclophosphamide use in treatment of autoimmune disease . Pulse dose cyclophosphamide is used in lupus nephritis and other conditions like Wegener’s granulomatosis, multiple sclerosis and rheumatoid arthritis (Siddik, 2002).They are not however free of side effects especially after prolonged use and these include amenorrhea (cessation of menses), oligospermia (reduction in sperm count) as well as secondary cancers such as acute myelogenous leukemia (Pizzo & Poplack, 2006). General classification of alkylating chemotherapeutic agents ? Non-specifically acting agents: They crosslink guanine nucleobases present in double helix of DNA and by so doing stop tumor proliferation. ? Agents that need activation : This includes cyclophosphamide which needs in-vovo conversion to active product? Biakylating and Monoakylating agents: The biakylating agents are capable of reacting with two 7-N guanine residues. When these residues are in different DNA strands, there is resulting crosslinkage of DNA strands and this makes DNA double helix to fail to uncoil (Siddik, 2002). However, when the two guanine moieties are in same base strands, what occurs is known as limpet association of DNA to the drug molecule. Example of biakylating agent is Bulsuphan . On the contrary, monoakylating agents are only capable of reacting with one 7-N of guanine molecule.? Classical alkylation agents: These are termed alkyl groups and they include three subgroups which are: (a) the nitrogen mustards which include mephalan, ifosfamide, uramustine, chlorambucil, mechlorethamine and cyclophosphamide b) The nitrosoureas which are carmustine, streptozocin and lomustine c) the alkyl sulphonates such as bulsuphan. ? Alkylation-like agents: They lack alkyl group but destroy DNA. They are regarded as alkylation-like as they coordinate to DNA so as to interrupt DNA repair permanently.They are the platinum based drugs such as cisplatin,oxaliplatin and carboplatin. They also bind at N7 positio n of guanine (Siddik, 2002) ? The Non-classical: Certain categories are termed non-classical such as altremine and procarbazine. Furthermore, sometimes the platinum based drugs are also regarded as non-classical. Nitrogen Mustards The nitrogen mustards are a group of DNA alkylation agents which are not specific . They are cytotoxic and have similar qualities to mustard gas, hence utilized as medicinal and chemical warfare agents.Nitrogen mustards stockpiled by many countries in WW II serve as potent and useful blister agents. Nitrogen mustards suppress bone marrow production of red blood cells. The first nitrogen mustard developed was mustine with anti-neoplastic chemotherapeutic value. Other examples of alkylation agents in nitrogen mustard family are mephalan, cholambucil, cyclophosphamide, uramustine and ifosfomide (Siddik, 2002). The likes of Bis (2-chloroethyl) ethylamine and Tris (2-choloroethlamine) are few nitrogen mustards used in chemical warfare.Nitrogen mustard’s mode of action involves formation of aziridinium or cyclic aminium ion when the amine nitrogen displaces chloride at intermolecular level. This is then followed by alkylation of DNA centers by the azidirium group (Siddik, 2002). Malfunctioning of alkylation DNA is usual during replication (Pizzo & Poplack, 2006). They prevent cell division and by so doing cause abnormal base pairing. Also it is possible that more than a single alkylation groups may exist in each molecule .In order words, these therapeutically useful alkylation agents are either bialkylating or polyalkylating agents (Siddik, 2002). The damaging effect is comparable to that which is seen with exposure of genetic material to radiation making it radiometric. Earlier, nitrogen mustards have been shown to form interstrand crosslinks (ICLs) and this formation takes place between N-7 of guanine residue in a 5†²-d (GC) sequence, although it was later discovered that nitrogen mustards form a 1,3 Interstrand crosslinks in the 5†²-d (GNC) sequence (Siddik, 2002).For instance, cyclophosphamide (cytophosphane), a nitrogen mustard arise from oxazophorine group and exhibits their chemotherapeutic effects by its nitrogen mustard metabolite,phosphoramide which form both interstrand and intrastrand crosslinkages at N-7 position of guanine molecule causing cell death. Cyclophosphamide metabolite is usually produced in cell with low amount of ALDH. References Pizzo, P. A & Poplack, D. G. (2006). Principles and practice of pediatric oncology. Lippincott Williams & Wilkins.pp. 310-320. Siddik, Z. H (2002)Mechanism of action of Cancer chemotherapeutic agents; DNA-Interactive alkylation agents and Antitumor platinum based Drugs. Retrieved On August 15,2010 from http://webcache. googleusercontent. com/search? q=cache:brnWwlXCLnIJ:hasdl. kau. edu. sa/encyclopedia/2/h6%2520archive/17. pdf+Mechanisms+of+Action+of+Cancer+Chemotherapeutic+Agents:+DNA-Interactive+Alkylating+Agents+and+Antitumour+Platinum-Based+Drug s+by+Zahid+H. +Siddik&cd=1&hl=en&ct=clnk

Life Changing Moment Essay

Each and everyone of us has a story to tell and share to others, life stories that may serve as an inspiration to other people. Every individual may have a life experience or a moment in his or her life that somehow greatly affects his or her whole life. We often share our own triumphs and travails, our victories and defeats, our happiness and despair that bring alterations to the present life situations. My story began as an ordinary boy in the state of Ferndale, Michigan. I am the youngest of five siblings, a son of Sazelia and Marvin Johnson. My mother was a university woman who tries to acquire a bachelor’s degree in Business at the University of Michigan. My father was a Mechanical Engineer who is deeply fascinated with cars. My parents are intellectual and social creatures who passed down the essential values of hard work, education and religion to their children. They make sure that we are not deprived of the essential things that we need in our education. They also impart important attitudes and ethical standards needed in conforming well to our social environment. My siblings and I grew up in happy and complete family that upholds education as the main key to success. However, I was different from my siblings for they all went to college, specifically to University of Michigan, after graduating in high school. All of them went to the university, except for our oldest brother, the gifted one on all of us, who went straight to Naval Academy. The life changing moment in my life, happen when I decided that I want to join the military. I really want to be a part of the military reserves so I join the U. S. Navy, wherein I scored high on the entrance examination and I was offered to undergo the U. S. Navy Nuclear Engineering Program. The crucial eight months followed after I joined the program. I learned as much as I can about Chemistry, Math, Electronics, Physics, Reactor Science and other related field in nuclear engineering. I can compare this experience with the experience told in Stephen Crane’s, An Episode of War. Just like the lieutenant who is wounded in war, my own training in the program and in the camp gave me confidence and dignity. It revealed the essence of my existence and all of my mundane desires. It explicates the purpose of my being and my involvement and role in preserving the sovereignty of my own country (Crane 8). Luckily, I was not involved in any war conflicts or that will make my story more exciting. However, I was in preparation aspect of our defense system. However, I sympathize to those who are sent to foreign places to battle with brothers that were considered foes and rogues by the government. I know how hard it can be. Many of us hope that it finally ends. Just like on the poem of Czeslaw Milosz, hoping that the traumas, war and other forms of conflict and misunderstanding will finally meet its conclusion. Our history is characterized and embedded with tragic events and disputes that took many lives (Milosz 256). Read more:Â  Happiest Moments Essay Leo Tolstoy’s War and Peace, vividly depicted the events in a war. How fertile lands became battlegrounds of two powerful forces. How innocent lives are drastically involved in the conflict. How children were separated to their parents and how the once happy and fruitful nation transformed into a futile land. After completing the learning prescribed by the program, I was assigned to a nuclear submarine, USS Kentucky SSBN 737. The submarine is an enormous structure that is similar to an underwater city. My training acquired from the program seems like an incomplete preparation to the task that I was assigned to. I was a nuclear plant operator that had a tremendous amount of responsibility. I have to make sure that the nuclear reactor was always safe and in good condition and running smoothly. My task is very crucial for it affects the safety of my comrades. Through the years that I have worked for the U. S. Navy, I got US$50,000 or so worth of proper science training and education in nuclear science and technology. It is more than anyone can ask for. It is such a blessing to anyone to be able to study free. Also, I have acquired credentials to work in most nuclear power plants in the nation. It is one of the prestigious works in the country to be able to work in a high-end facility like a nuclear power plant, wherein knowledgeable individuals are only capable of handling the specific task of maintaining the safety of the nuclear reactor. The education, training and working experience is a something big for me, an ordinary boy who only dream of being a G. I. Joe, inspired by my toy soldiers and toy guns. My experiences during my service to the military were really fruitful and fulfilling. I enjoyed most of my time under the submarine doing my task. It greatly alters and influences my present personality. I have traveled in many places and met many people all over the United States that contribute on my life’s journey. I significantly learned how to start and finish something. My service in the Navy ends, but I am more than ready to start a new journey in this life of mine. I try to acquire a bachelor’s degree in Architecture, one of the things that I wanted to accomplish. From Southwestern College, I transferred to USC this fall to complete my degree. The chapter of my life in the Navy, I will be able to look back and be proud to say that I was part of something special and noble.

Assisted Living Observation Student Learning Essay

Assisted Living Observation Student Learning - Essay Example He also has dry, wrinkled, and flaccid skin. He also stated that his life had greatly changed when he became a widower after 40 years of having good memories with his wife. I also noticed that despite of his age, he still has a sharp memory and can recall most of his past experiences. After having a conversation with the older adult, I looked for resources that would help me relate my observation of the older adult to the expected age-related changes. Delaune and Ladner stated that degenerative changes related to aging such as decrease in the size and responsiveness of pupils to light and thickening of the lens cortex contribute to the loss of visual acuity among older adults (p. 370). The use of dentures is expected because older people lose their teeth for a variety of reasons. Dry, wrinkled, and flaccid skin are expected conditions that occur with aging because the skin loses many of the properties that help make it appear youthful. After a major life event, such as death of his spouse, it is expected that changes in relationships and roles typically occur. With regards to memory, it is a common misconception that all older adults suffer from senility. As one ages, the memory impairment may range from mild to severe; indicating that memory gaps may vary accord ing to the level of functioning of the older adult (Delaune and Ladner, p.

Gays marriage Essay Example | Topics and Well Written Essays - 1250 words

Gays marriage - Essay Example Some countries such as New Zealand and Uruguay have enacted and passed laws legalizing gay marriages and which await implementation in August this year. Laws legalizing gay marriages have faced many hurdles in the passage and implementation in many countries. This is because recognition of gay marriages is a social, religious, political, human rights as well as civil issue in several countries and societies in the world (Scherer 45). Several debates continue to emerge everyday concerning legalizing gay marriages. Such marriages are performed in a religious or secular civil ceremony. Some religious faith groups permit gay marriages and these include the American Episcopalians, United Church of Africa, Quakers, Buddhism in Austria, and Conservative Jews among others (Scherer 45). According to various researches conducted in many countries, majority of people with higher levels of education support gay marriages (Chenier 19). Such support is greater among the youths than the aged. Most pollsters in western countries indicate that a majority of people continue to support gay marriages regardless of race, religions, political affiliations, ethnicities, as well as socioeconomic statuses among others. In US, residents of states such as Maryland, Maine, and Washington voted in favor of legalizing gay marriages. ... For instance, the proponents argue that prohibiting gay marriages infringes on the right of man to socialize with any person he or she wishes and seems appropriate (Saad 1). Moreover, they claim that prohibition of gay marriages is discriminatory since it categorizes people. Consequently, banning of same sex marriages infringes on the right to equal treatment of all persons regardless of sex, gender , religion, social status, race just to mention a few. According to court papers filed by American scientific associations, mockery of gay marriages contributes to discrimination of the people involved in the practice (Larocque 23). In addition, since nobody prefers or likes to be discriminated against, banning of such marriages exposes such people to various forms of discrimination. According to scientific information, marriage enhances the well-being of parents thereby, ensuring children benefit from marriage (Larocque 23). Therefore, legalizing gay marriages will improve the well-being of the couples thus, ensuring that children reared by the couple benefit to the maximum. Moreover, scientific research argues that children reared by parents engaged in gay marriages are as healthy and fit as those raised by heterosexual parents. However, the opponents of gay marriages claim that legalizing such marriages goes against the social norms, which have been respected for long time. These people argue that gay marriages arise from couples that are heterosexism or homophobic. Since such people fear or do not like associating with the opposite sex, they get comfort and consolation from people of the same sex (Mann 156). Therefore, these people are not free with the opposite sex, thus have a problem in the society. Moreover, the opponents of same sex marriage

Module 3 Principles of Human Resources using Performance Appraisals Essay

Module 3 Principles of Human Resources using Performance Appraisals - Essay Example Appraisals also identify the below-par performers who then may be subjected to counseling or punitive action such as pay cuts, demotions or in the extreme case dismissal or decreases in pay. The necessity of performance appraisals is a debated issue. While on one hand a number of authors feel that it is one aspect of corporate organizations that creates significant hindrance to effective management of human resources (Derven, 1990), authors like Lawrie (1990) feel it to be indespensible and possibly one of the most crucial aspects of organizational management. The fundamental reason behind opinions spread over both ends of the spectrum is that these are based upon observations about successes and failures of appraisals in engendering warranted results. I believe that it is not the action of evaluating employees through appraisals but rather the manner in which these are administered that leads to such different results. The necessity of performance appraisals is intricately tied to the objectives and policies of the organization. For organizations that believe in generating employee loyalty and try and minimize employee turnovers performance appraisals can play a very important role. Further, appraisals offer the opportunity to focusing on activities and objectives, to locate and cure problems found to be existing, and thereby to provide encouragement for better performances in future. This, effectively done can thus improve the aggregative performance of the whole organization. The appraisals also embody the opportunity mutual recognition and agreement of individual training and development needs. Discussion of any workers performance can beyond argument establish lack or abundance of skills which otherwise in a generic voting situation or centralized meeting situation cannot become clear. So, performance appraisals can definitely establish the necessity of training as well as the

International Management Ethics and Values Case Study

International Management Ethics and Values - Case Study Example Thus, it will allow the revealing of the variations or mutations that would lead to genetic disorders. This ethical theory will help in guiding the employees to take the test ethically and then help in delegating the task accordingly. (b) From the above statement the author of the study is trying to make a statement that people suffering from generic disorders cannot change their jobs or the employer cannot change the business environment. The changing of business environment because of certain employees who are more susceptible to the disease would be irrational because it would require the changing of entire business procedure. The above statement resembles the Descriptive theory which emphasize on the â€Å"What If† behaviour of the company and an individual (Dimitriou et. al., 2011). (c) The passing of several legislature laws to curb down the effects of the generic testing has been effective to a certain extent only. The generic testing itself is an intrusive behaviour an d the legal law imposes certain restrictions on it for the welfare of the common people. Thus, it can be observed that the entire process resemble the Normative ethical principles. It is a systematic process to justify the morality of the society. Answer 2 (a) Moral and Ethics are used interchangeably and is useful to make certain distinctions like morality would be used to distinguish between right and wrong. It would be served as a guide to make right decisions though moral conduct. Ethical values are nothing but the subject of the morality. The moral theories of right are basically structured set of statements which lays emphasis on how individuals conduct actions and then determine the right and wrong between them. The morality of an action is determined and there is a sharp divide between the applied ethics and moral theories. The morality of the decision will be evaluated and the correct decision will be taken only after evaluation of various alternative actions. In this case it is observed that Genetic testing would involve the testing of gene mutation of the individuals and it is a systematic procedure which involves the assistance from the employers (Pollock, 2011). (b) Utilitarianism is a concept which has been derived from the Normative Ethics and helps in the maximization of the utility process which helps in reducing suffering and increasing welfare of the people. It can be regarded as a reduction approach which works for the welfare of the people. However, it can be regarded as a technique which that determines the moral value of action. It helps us in understanding whether our actions conducted in the past are having an effect in the present or not. The theory would be only utilitarianism if it can helps in distinguishing between right and wrong and provide provides goodness to a majority of the people. The generic screening test provided by the employers of an organization would not only help them in selecting candidates who are less susceptibl e to the disease. The screening test would not only be helpful in selecting the most appropriate candidate but would also enable the candidate to come in terms with their reality. The screening test would be done keeping in mind the benefits of an entire mass (George, 2011). (c) The justice of fairness developed by John Rawls is regarded as one of the classical ethical theories which help in evaluation of moral and ethical values (Wofford College, 2000). As per this theory each individual

Money and the Congressional Campaign Essay Example | Topics and Well Written Essays - 1000 words

Money and the Congressional Campaign - Essay Example This is indeed unrealistic but there are a number of speculations that may be used to analyze the narrative because there is no statistically observable linkage between spending and the likelihood of victory (Dubner Web). Candidates spending had much smaller effect in winning the elections than expected. This essay tends to ascertain the reasons behind the relationship between huge spending and likelihood of victory for the congressional candidates. According to Dubner the 2012 elections saw huge campaign expenditure achieving very little because it did not have discernable effect on the outcome of most races (Dubner Web). Historically, in the congressional elections, 90% of the incumbents seeking always win with more than 60% of the vote regardless of the challengers’ positions. Nevertheless, senators seeking re-election usually win with narrow margin compared to the house representatives due to the diversity of the states. Reelection always exposes the incumbents to vulnerab ility because of big expenditure in campaigns such as advertising, travelling more to their states and large staffing (Narayanswamy Web). Congressional candidates have been spending enormous sums on campaigns to win the elections particularly when the competition is very stiff and there is no incumbent running for re-election. There is always a belief when an incumbent is running for a reelection then any candidate from any party is likely to win and this greatly stiffens competition. In that case, there is a notion that a candidate who spends the most in the vacated seats especially in the House has a bigger chance of winning. Huge sum of money for congressional campaigns come from individuals pocket while 30% come from Political Action Committees that seek access to policymakers. PACs usually sponsor incumbents because they are likely to win since critics argue that the main objective of PAC is not to elect but to influence. Interestingly, high-volume does not guarantee victory re gardless of the belief that money buys challengers’ recognition and an opportunity to be heard (Lessig Web). Dubner explains that group of billionaires and privately owned corporations contributed more than $1billion on super PACs accompanied by wave of attacks through unrivaled ads yet the big spenders did not win (Web). Failure to return the senate to the GOP control by the Republicans was an evidence of a heavy spending with little achievement. It was unfortunate that the Republicans lost ground in the senate after pouring a lot of money in the campaigns including the House contest where the Democratic candidates won even after the Republican candidates outspent them in the final months. Interestingly, there were some cases where the Republicans were outspent but they won the elections (Narayanswamy Web). Senate contest in Virginia that involved Kaine and George Allen who spent almost $50 million from independent group but Kaine won comfortably and another failure of the b ig spending Linda McMahon in Connecticut after pouring more than $90 million. There are many other examples such as in the House where Re, Robert Dold of Illinois was outshined by Democrat brad Schneider after spending $1.9 million (Dubner Web). It was later clear that most of the targeted candidates failed and they blamed the super-Pac money for their disappointment. They lamented that most of their time in the race was spent on seeking money and focusing on defense instead of discussing issues (Lessig Web). It was unfortunate to see huger spending Republicans losing in the House elections while Democrats winning with little spending. Could it be a momentum from Obama or just another force that favored the Democrats and

Case Study Example | Topics and Well Written Essays - 750 words - 1

Case Study Example But there was internal problem of equity shareholding. The funds were limited and they wanted the company to grow. For this Chase approached investors and not bank as there was less cash in their banks. There was positive feedback from the investors. The pricing strategy was the important factor with promotional activity in the US market. The target audience for the company was different in North America. The pricing strategy was difficult. Chase adopted the European model pricing strategy for a while and then customized the pricing strategy to attract more customers. Financing was done from own resources along with convertible loan into shares and this helped to develop the business. They used low cost tactics of marketing. Through word of mouth, free media coverage, public relations and personal guerrilla marketing efforts, tactics were implemented. They used the internet source and website to build huge online customer base for booking in advance from different locations. The conc ept of ownership feeling with the right target customers developed the business in the US. B Business Model The business model has been developed from the Swiss concept of renting the vehicle. The concept was adopted from European market as well. Chase and Danielson had researched in 1999 about the European market, the UK market, the US market and other markets as well to develop its Zipcar business model. Taking the vital aspects of the international markets, Chase and Danielson developed their model which was the US car sharing based model. The operation was conducted first in one city. The successful running of this operation made Chase and Danielson operate the business in 14 cities. This way, they expanded their business. Changes between December 1999 to May 2000 The planning and research was completed in December 1999 and the venture was started in January 2000. There were funding from Chase’s own resources along with that of Danielson. There was limited funding and the overhead costs were to be minimized as they attempted to deliver the service at low cost than the competitors. To expand the business and its operations in other cities, funding was required. For this Chase and Danielson prepared the financial investment plan and were able to attract the investors for financing the business. The business did well during the phase of January - February. After February, finance was provided and their liquidity position was strong enough to manage various overheads, operating costs and they were able to expand the business. Chase developed the infrastructure to launch the operations that were significant to develop the business. Revenues were increased through the membership and there were increase in the customers. This continued even in the month of May 2000. Implications of Actual Operations in September The overhead expenses were increasing and there were problem with the increase in the fuel prices, which increased the operating costs. They were still in the development phase with additional costs in the technical advancement for the service. This increased the cost. There were certain convertible loans raised during this period for the business operations. Comfort or Concern The prevailing scenario was a major

An experiment to obtain Zinc Oxide from Calamine Essay Example for Free

An experiment to obtain Zinc Oxide from Calamine Essay This will be repeated until the weight of the test tube with its contents is identical. E. g. 1st reading= 17. 24g, 2nd reading= 17. 18g, 3rd reading=17. 15g, 4th reading=17. 15g The underlined readings are identical; consequently I would stop and record these readings. I would do it like this because when the readings are the same it means that the reaction has stopped and there is no need to go any further. This is done for every amount. Fair Test There are many things that can be done to keep this experiment a fair one. Firstly the same test tube must be used as all of them have different weights. The amount of time you leave the test tube on the Bunsen burner is also crucial, as it would not be a fair test if you left one test tube in the heat longer than the others. You must measure the amount of mineral wool you put in the test tube so that you can deduct that and the weight of the test tube to get your result. Errors will be kept to a minimum with the use of digital weighing equipment. Preliminary work My preliminary work consists of an experiment titled Obtaining Copper Oxide from Malachite. Malachite is a mineral that contains copper. In the experiment we heated the Malachite in an attempt to obtain Copper Oxide. From the experiment I acknowledged that as the mass of Malachite increased so did the mass of Copper Oxide. The experiment was extremely similar to this experiment, thus I would expect the same to happen in this case. Therefore, in this experiment, the more Calamine that is used the more Zinc Oxide that will be produced. It doesnt take a genius to work that out though. -7- Jack Mariner Chemistry Coursework Results: Chart 1 Reading Amount of Calamine (g) Amount of Zinc Oxide produced (g). Shown above are the results from the experiment and below is a graph plotted from these results. -8- Jack Mariner Chemistry Coursework Graph 1 is a bar chart showing the amount of Calamine used, plotted against the amount of Zinc Oxide produced. Although this graph may look pretty, it is not very useful. From just using these results, it is difficult to explain and understand the graph, so something else is needed: The theoretical amounts. Chart 2. No. of readings Amount of Calamine (g) Theoretical amount of ZnO Predicted (g) Actual amount of ZnO Produced (g). These theoretical amounts have already been calculated. To add these to the graph like on the next page will help us to analyse the results in more detail. -9- Jack Mariner Chemistry Coursework Now this graph is worth looking at. It shows the theoretical amounts of Zinc Oxide produced, plotted against the actual amount of Zinc Oxide produced. So theoretically, in perfect conditions, with a perfectly fair test in practise, the theoretical results would be achieved. My experiment however wasnt done in these conditions, which is why the results do not resemble each other perfectly. -10- Jack Mariner Chemistry Coursework Graph 3 is a line graph, which I feel shows the information more clearly. From it you can see that the theoretical amounts are similar to the actual amounts of Zinc Oxide produced, however there is room for a lot of improvement. For instance, reading 2. This was done using 1. 5g of Calamine. Something definitely went wrong here because it is so out of proportion to the other results. Due to the obvious mistake I took the liberty of requesting a glimpse of another groups results, to compare with mine and to see their result for 1. 5g of Calamine. Chart 3 Reading Amount of Calamine (g). Actual amount of ZnO Produced (g) Other Group Comparison of ZnO Produced (g) From Chart 3, you can see that my results are in fact relatively similar to the other groups results that I have compared with. The reasons for the differences are probably due to spillages or how concentrated the substances were, etc. Analysing the Results To analyse my results I shall look back at them individually. Chart 1 shows only my results. These were very pleasing because they were nearly as I predicted. At this stage I wasnt aware of any anomalous results as the relationship between them looked good. I am still satisfied with my results but would like to redo the test for 1. 5g of Zinc Carbonate. This would give better results to analyse and to draw a conclusion from. The second chart, Chart 2, showed the theoretical amounts. I included these into my experiment so that I could see how accurate my results were. Comparing with another group is good, but their results could also be wrong. Comparing with these theoretical results would show me immediately the accuracy of my results. I have drawn the graph on the next page to demonstrate this. -11- Jack Mariner Chemistry Coursework So the graph is really a way of measuring your accuracy. To do this I worked out the percentage (%) yield. This was done by using the equation; % yield = actual amount theoretical amount From the graph you can see that the majority of my results were very accurate. I have done readings 2 and 4 in a different colour because they are obviously wrong. They both have a percentage yield of over 100%, which is impossible. The reason for this is probably due to contamination and impure Calamine. These two readings are therefore anomalous results. Chart 3 shows that my results are actually fairly similar to those from the other group. Apart from the obvious experiment error in reading 2, the thing that catches my attention most is the fact that my results are all higher than those from the other group. This could be resulted from a number of things, for example the use of different pieces of equipment, or the stopwatch counted seconds at slightly different rates, consequently that group leaving the test tube under the heat for a longer period of time. Or on the other hand these results maybe higher then the compared groups results as a complete coincidence. -12- Jack Mariner Chemistry Coursework Conclusion From graph 3, you can see that my hypothesis is of high quality stating that I predicted a graph with strong positive correlation. This was almost a perfect prediction. My conclusion really for this experiment is that as the amount of Calamine increases so does the amount of Zinc Oxide produced from this. Theoretically this is done proportionately, but actually anomalous results interfere, leaving the results strongly related with strong correlation as apposed to a theoretical graph with perfect correlation. Evaluation I consider this experiment to be a success. The plan was followed very well and the results were of good quality. The measurements were done accurately, and a fair test was achieved. The procedure used was also a very fair and efficient one. Although the experiment was a success, I am still bothered by the fact that anomalous results occured in my experiment. I think that the reasons for these results were because of time limitations. We had very little time to accomplish this task successfully, so mistakes were inevitable. The improvements, which could be made in doing this experiment, are to have a longer time to do the experiment so that isnt done making careless mistake and if mistakes were made, there would be enough time to redo what was needed. Secondly more high tech equipment could be used to get more reliable and accurate results. Also, an essential thing is for the Calamine used to be pure. This is important because impure calamine could react at a different rate to more pure Calamine. This would have a huge bearing on the final result. Lastly, more readings could have been taken. This would lead to averages being taken giving better results.

Cooperative Vehicle Safety System for VANETs

Cooperative Vehicle Safety System for VANETs COOPERATIVE VEHICLE SAFETY SYSTEM FOR VEHICULAR AD-HOC NETWORKS T. Sujitha, Final year M.E(CSE), ABSTRACT Vehicular ad hoc networks (VANETs) are a one form of wireless networks used for vehicles communication among themselves on roads. The conventional routing protocols are suitable for mobile ad hoc networks (MANETs). But it’s poorly in VANETs. As communication links break often happen in VANETs compare than in MANETs, the reliable routing is more difficult in the VANET. Research work has been done to the routing reliability of VANETs on highways. In this paper, we use the cooperative vehicle safety system for VANETs. The cooperative vehicle safety system helps to capture the future positions of the vehicles and determines the reliable routes preemptively. This paper is the first to propose a cooperative vehicle safety system for VANETs gives quality-of-service (QoS) support in the routing process. A new mechanism is developed to find the most reliable route in the VANET from the source vehicle to the destination vehicle. Through the simulation results, that the proposed scheme s ignificantly give good result compare than other literature survey. Keywords- vehicular ad hoc network (VANET),DSRC, IEEE 802.11,sensor,OBU,RSU. 1.INTRODUCTION Every day, a most of people die, and many people are injured in traffic accidents around the world. The desire to improve road safety information among vehicles to prevent accidents and improve road safety was the main motivation behind the development of vehicular ad hoc networks (VANETs). VANETs are a promising technology to enable communications among vehicles on roads. They are a special form of mobile ad hoc networks (MANETs) that provide vehicle-to-vehicle communications. It is assumed that each vehicle is equipped with a wireless communication facility to provide ad hoc network connectivity. VANETs tend to operate without an infrastructure, each vehicle in the network can send, receive, and relay messages to other vehicles in the network. Figure 1.1 Structure of Vanet Ad-hoc Networks This way, vehicles can exchange real-time information, and drivers can be informed about road traffic conditions and other travel-related information. The most challenging issue is potentially the high mobility and the frequent changes of the network topology. In VANETs, the network topology could vary when the vehicles change their velocities and/or lanes. These changes depend on the drivers and road situations and are normally not scheduled in advance. Embedded wireless devices are the main components of evolving cooperative active safety systems for vehicles. These systems, which rely on communication between vehicles, deliver warning messages to drivers and may even directly take control of the vehicle to perform evasive maneuvers. The cyber aspects of such applications, including communication and detection of vehicle information are tightly coupled with physical dynamics of vehicles and drivers behavior. Recent research on such cooperative vehicle safety (CVSS) systems has shown that significant performance improvement is possible by coupling the design of the components of the systems that are related to vehicle dynamics with the cyber components that are responsible for tracking other cars and detecting threats. The types of possible actions and warnings in vehicle safety systems range from low-latency collision avoidance or warning systems to moderate-latency system that provide heads up information about possible dangers in the non immediate path of the vehicle. The main differences of these systems are the sources and means of information dissemination and acquisition. In active safety systems, vehicles are required to be continuously aware of their neighborhood of few hundred meters and monitor possible emergency information. This task can be achieved by frequent real time communication between vehicles over dedicated short range communication (DSRC) channel. In addition to inter-vehicle communication; roadside devices may also assist vehicles in learning about their environment by delivering traffic signal or pedestrian related information at intersections. The main requirement of these active safety systems is the possibility of delivering real-time acquired information to and between vehicles at latencies of lower than few hundred milliseconds. Prototypes of such systems are being developed by many automotive manufacturers. 2. EXISTING SYSTEM In DSRC based safety systems, the cyber components are selected so that they meet the requirements of active safety. Nevertheless, the existing designs fall short of supporting a full-fledged CVSS in which a large number of vehicles communicate and cooperate with each other. The main reason behind the issues with the current designs is the level of separation in the design of different components. Later in this paper we describe methods to achieve better performance by further cooperation of the physical and cyber sub-components. In the next subsection we describe existing active safety CVSS systems and their designs. Figure 1.2 Communication in VANET systems. The traditional design of the CVS system, based on the structure depicted, is a straightforward design following the recommendations of an early report by vehicle safety communication consortium (VSCC). According to this report, it is suggested that vehicles should transmit tracking messages every 100ms, to a distance of at least 150m (avg. 250m). Therefore, the message generation module in becomes a periodic process that outputs a sample of the current state of the vehicle in a message every 100msec. The DSRC radio power is set to reach the suggested distance. Given the issues of the above design in crowded networks, several enhancements have recently been proposed to improve the performance of CVS systems beyond the early solutions set forth by VSCC. One such method is the work in [22] that proposes to fairly allocate transmission power across all cars in a max-min fashion; this method helps reduce the load at every point of a formulated 1-D highway and thus reserves bandwidth for emergency messages with higher priorities. This method assumes a predefined maximum load as the target. In another work, a message dispatcher is proposed to reduce required data rate by removing duplicate elements, here, the idea is that many applications require the same data elements from other vehicles. The message dispatcher at the sender side will group data elements from application layer (i.e., the source) and decides how frequently each data element should be broadcast. The above methods focus on the computing module, as defined in this section, and try to improve its performance through observing the behavior of the application, or by incorporating limited physical process information in the design of the computing module. While the above improvements do enhance the performance of CVS systems, these designs do not consider the mutual effects of computation, communication and physical processes on each other. In this, try to identify such mutual effects and propose a design that uses the knowledge of the tight coupling of cyber and physical processes to the benefit of a CVSS system. DESTINATION SEQUENCED DISTANCE VECTOR (DSDV) DSDV is a proactive protocol that maintains route to all the destinations before requirement of the route. Each node maintains a routing table which contains next hop, cost metric towards each destination and a sequence number that is created by the destination itself. This table is exchanged by each node to update route information. A node transmits routing table periodically or when significant new information is available about some route. Whenever a node wants to send packet, it uses the routing table stored locally. For each destination, a node knows which of its neighbor leads to the shortest path to the destination. DSDV is an efficient protocol for route discovery. Whenever a route to a new destination is required, it already exists at the source. Hence, latency for route discovery is very low. DSDV also guarantees loop-free paths. 3. PROPOSED SYSTEM Cooperative message authentication protocol, which augments the basic short group signature protocol by mitigating the computation overhead in the regular broadcast phase. According to, the verification time for short group signature is 11ms with a 3 GHz Pentium IV system. In a typical public safety application, each vehicle broadcasts safety messages every 300 ms, which implies that each vehicle can at most process messages from other vehicles in a stable system. However, according to the measurement, there may exist as many as 87 vehicles broadcasting messages within the 300m communication range of a receiving vehicle, far exceeding its processing capability. Therefore, we propose a cooperative message authentication protocol to fill the gap between the workload and the processing capability. 3.1 PROTOCOL IMPLEMENTATION RSUs broadcast I-public keys, G-public keys of themselves and their neighbor RSUs with certificates and identities of revoked RSUs in their neighborhoods regularly. Authorities employ benign RSUs around compromised RSUs to implement revocation by regular broadcasting those compromised RSUs’ identities. When a vehicle detects the hello message, it starts registration by sending its I-public key and the certificate to the RSU if the RSU is not revoked. Normally, a public key should not be encrypted. However, in our system model, each vehicle’s I-public key is unique, so it is also an identifier of the vehicle. We encrypt it to protect vehicle’s privacy. The RSU sends the hash value of the G-private key which plans to be assigned to the vehicle and the signature of the hash value, vehicle’s I-public key and RSU’s I-public key to the vehicle. RSU’s I-public key is also unique. The vehicle can identify the RSU’s legitimacy after it verifies this message because the RSU uses its I-private key in the message. The vehicle encrypts its Npri and the timestamp by using authorities’ public key. Then, it sends the encryption data with the timestamp and the signature of corresponding information, message 4, to the RSU. The encryption of its Npri and the timestamp is a commitment. It can be useed to detect illegitimate users later. Meanwhile, the signature signed by the vehicle binds vehicle’s information and the assigned G-private key. Then, the RSU cannot re-map them because the RSU does not have vehicle’s I-private key. The RSU sends the G-private key to the vehicle. The vehicle finishes registration procedure after it gets a valid G-private key. Then, the RSU stores the information, as in the local database. The signature in the fifth item is the signature that the RSU receives in message. If authorities need the information of a vehicle when there is a dispute, the RSU has to send the vehicle’s corresponding information to authorities. 3.2 PERFORMANCE EVALUATION The performance of the proposed algorithm is evaluated through network simulator version 2. A cooperative message authentication protocol(CMAP) is presented to alleviate vehicles computation burden. In the protocol, because vehicles share their verification results with each other in a cooperative way, the number of safety messages that each vehicle needs to verify will be reduced greatly. A new research issue of the protocol is how to select verifiers in the city road scenario. Thus, we propose three verifiers selection algorithms, n-nearest method, most-even distributed method and the compound method for the CMAP. Performance metrics are utilized in the simulations for performance comparison. Packet arrival rate The ratio of the number of received data packets to the number of total data packets sent by the source. Energy consumption The energy consumption for the entire network includes transmission energy consumption for both the data and control packets. Average end-to-end delay The average time elapsed for delivering a data packet within a successful transmission. Control overhead The average number of transmitted control bytes per second, including both the data packet header and the control packets. Collision rate The average Collision rate for the entire data transmission from source to destination is much controlled and reduced when compared to the existing protocol. 4. ELLIPTIC CURVE DIGITAL SIGNATURE ALGORITHM ECDSA is Elliptic Curve Cryptosystem (ECC)-based implementation of the commonly used digital signature algorithm. ECC provides the same security level as the other discrete logarithm approaches, while the size of the required ECC credentials is much smaller than that of the discrete logarithm systems. The WAVE security service adopt ECDSA-based message authentication for vehicular communications. Two standard elliptic curves namely P-224 and P-256 have been suggested for general purpose message authentications, and certificate authentications in VANETs. A VANET entity is required to transmit periodic safety messages containing its current coordinates, speed, acceleration etc. to the neighboring devices. The typical interval for safety message broadcasts ranges from 100 ms to 300 ms. An authentication scheme has to be incorporated in order to provide reliability and trust for the delivered safety information. Received messages are verified by the receiving entity to ensure the message integrity, and authenticity of sender’s identity. Unfortunately signature verification incurs a cryptographic processing delay at the verifier’s end. Although the verification delay for ECDSA is in the order of milliseconds, with hundreds of vehicles in a dense traffic scenario, an OBU would receive an enormous amount of periodic messages per unit time causing a bottleneck to the authentication process at the receiver end. If OBUs are configured to broadcast their periodic messages every 100 ms, under a heavy traffic scenario, many of the safety messages would either be discarded due to the constrained buffer size of the verification process, or accepted without any verification. Therefore in busy traffic hours, a receiver of vehicular messages would either risk a fatal road-traffic consequence, or it would reject a significant portion of received messages without authenticating when its maximum verification capacity is reached. The current WAVE standards do not include an efficient anonymous authentication scheme for vehicular messages, or even an intelligent authentication strategy which can efficiently verify from a massive number of vehicular safety/application messages. 5. CONCLUSION The proposed protocol designed an identity-based anonymous user-authentication scheme and a cross-layer verification approach for WAVE-enabled VANET’s safety messages. A variation of the conventional ECDSA approach is used with the identity-based signature approach where the common geographical area information of signing vehicles is taken as the signer’s identity. This exempts a vehicle from the mandatory inclusion of a trusted third-party certificate with each broadcast message in a VANET while a user is still identifiable by the trusted third-party up on a dispute. A cross-layer message verification scheme verifies the received messages based on their MAC traffic class and traffic intensity. This ensures that under the rush hour congestion or traffic accident most important messages will not be missed by the verifier. Security analysis and performance evaluation justify our authentication and verification approach for WAVE-enabled vehicular communications. REFERENCES [1] C. E. Perkins and E. M. Royer, â€Å"Ad-hoc on-demand distance vector routing,†in Proc.2nd IEEE WMCSA 1999. [2] V. A. Davis, â€Å"Evaluating mobility models within an ad hoc network,† M.S. thesis, Colorado Sch. Mines Golden, CO, USA, 2000. [3] A. Ferreira, â€Å"On models and algorithms for dynamic communication networks: The case for evolving graphs,† presented at the 4e rencontres francophones sur les ALGOTEL, Meze, France, 2002. [4] M. Rudack, M. Meincke, K. Jobmann, and M. Lott, â€Å"On traffic dynamical aspects of inter vehicle communications (IVC),† in Proc. IEEE Veh.Technol. Conf., 2003. [5] H. Menouar, M. Lenardi, and F. Filali, â€Å"A movement prediction-base drouting protocol for vehicle-to-vehicle communications,† in Proc. 1st Int.V2V Communication Workshop, San Diego, CA, USA, 2005. [6] T. Taleb, M. Ochi, A. Jamalipour, N. Kato, and Nemoto â€Å"An efficient vehicle-heading based routing protocol for VANET networks,†in Proc.IEEE Wireless Communication ,2006. [7] G. M. T. Abdalla, M. A. Abu-Rgheff, and S. M. Senouci, â€Å"Current trends in vehicular ad hoc networks,† in Proc IEEE Global Inf. Infrastruct.Symp., Marrakech Morocco, 2007. [8] V. Namboodiri and L. Gao, â€Å"Prediction-based routing for vehicular adhoc networks,† IEEE Trans.Veh Technol, 2007. [9] K. T. Feng, C. H. Hsu, and T. E. Lu, â€Å"Velocity-assisted predictive mobility and location-aware routing protocols for mobile ad hoc networks,† IEEE Trans Technol, 2008. [10] J. Monteiro, â€Å"The use of evolving graph combinatorial model in routing protocols for dynamic networks,† in Proc. XV Concurso Latinoamericanode Tesis de Maestrà ¬a, 2008. [11] G. Pallis, D. Katsaros, M. D. Dikaiakos, oulloudes and L. Tassiulas,â€Å"On the structure and evolution of vehicular networks,† in Proc. IEEE/ACM Meeting Symp. MASCOTS, 2009. [12] S. C. Ng, W. Zhang, Y. Zhang, Y. Yang, and G. Mao, â€Å"Analysis of access and connectivity probabilities in vehicular relay networks,† IEEE. Areas Communication, 2011.