Effect of Presidential Elections on Businesses and Business Leaders

As the saying goes, â€Å"the only thing that is constant in life is change†. If we are not sure of anything, we should be sure of the fact that the outcome of the upcoming presidential election will bring about a change to the American economy. This impact will definitely spread across all sectors of the economy including U. S. businesses and business leaders. The question, however, is what the impacts foreseeable are? I would like to say that the impacts would be dependent on the presidential candidate that wins the election. If we are to go by what they have already highlighted as their plan if elected, Barack Obama winning the election might not be good news for U. S businesses and business leaders alike. In his campaign, he made it clear that his administration would offer tax cut to middleclass families and would definitely increase the tax of CEOs and corporations. If we are to judge from this, we might as well say that while this would be good news to the average American, it is the CEOs and the U. S. businesses who would bare the weight of the tax plan. Apart from this, Obama says he would hold corporations responsible for pensions and work conditions. This might be a back breaker for U. S businesses and business leaders on the whole. On the other hand, if it the election ends with Senator John McCain emerging victorious, then corporations and Business leader should be ready for a favourable tenure. Apart from the fact that Senator McCain promises to cut corporate tax, he claims that his administration would be on the side of U. S businesses and not in their way. He promised to cut corporate tax in order to maintain employment of workers in these corporations and he seems not to be concerned about U. S businesses using their resources to expand in other regions like Senator Obama. If we are judge from this, I think that U. S businesses and business leaders would flourish and expand if He assumes office. Summarily, the crux of the whole thing is that Senator Obama economic plan would favor the middleclass workers while it could be at the detriment of U. S businesses and business leaders. On the other hand, Senator John McCain’s economic plan seems favourable to U. S businesses and business leaders as he sees them as pivotal to keeping the jobs of Americans.

Influences that helped Nayar to create

Abstract In this paper, an analysis will be made about the Innovative leader Vineet Nayar, a former CEO of HCLT. This paper examines and describes his leadership techniques within his organizations. In this paper, I will analyze the global trends that influenced the need for Nayar to create a more Innovative organization. Also, this paper will introduce the five discovery skills and assess Nayar's use of them as an innovative leader within his organization. Lastly, I will make recommendations for improvement on use of the discovery skills.Factors In the global environment that Influenced Nayar's need to create a more innovative organization In the article A Maverlk CEO Eplalns How He Persuaded HIS Team to Leap into the Future, Vineet Nayar was the president of the Delhi-based IT service provider, HCL Technologies. In 2005, Nayar noticed that his company was losing market share and mindshare. He also noticed that his competitors were becoming more enhanced at substantial rates each ye ar. According to Nayar, a global organization is one that Inverts the pyramid of the organizational structure and Is more entrepreneurial (2013).Nayar traveled to locations around the world and had meetings with senior managers where he would listen to their ideas; they would talk honestly, and face the truth. According to Nayar, â€Å"This method enabled people to see that a change has to be made. † This technique came to be called Mirror Mirror. Nayar's use of the five discovery skills and how he used those skills to create an According to The DNA of Innovators, an organization's success vanes systematically throughout the business life cycle. The discovery skills are most prominent in the early phases of a businesses life cycle (Dyer, Gregersen, andChristensen 2011 The five discovery skills are associating, questioning, observing. networking and experimenting. Associating, as Dyer, Gregerson, & Christensen (2011) stated, â€Å"happens as the brain tries to make sense of n ovel inputs. Associating helps innovators discover new directions by making connections across seemingly unrelated questions, problems or ideas (pg 23). † When Nayar determined the direction he wanted his company to go in Is when he used the associating skill. Although his company was doing very well at the moment, he noticed key points that allowed him accept the fact that his company eeded a new strategy.The second discovery skill is questioning. In The DNA of Innovators, â€Å"Innovators ask questions to understand how things really is today, why they are that way, how 1 OF2 included his employees to find out their outlook and ideas. He questioned them to determine which direction they thought the company needed to heed in. Nayar also spoke to and questioned customers to find out their likes and dislikes with HCL. He realized that the value zone for his company was between the customers and the frontline employees. The third discovery skill is observing.Innovators use this skill by carefully watching the world around them so that what they see can help them build ideas for new ways to do things. This is what Nayar was doing when he traveled to locations around the world. He was attempting to gain insight on his company on a larger scale. The fourth discovery skill is networking. The idea networker does not simply network to sell themselves or gain relationships to possess desired resources. According to Dyer, Gregerson & Christensen, the idea networker, â€Å"networks to actively tap into new ideas and insights by talking with people who have diverse ideas and erspectives. By Nayar speaking with his front line employees and customers to gain insight on the direction of his company, this is a form of networking â€Å"ideally. † The last discovery skill is experimenting. Innovators use this skill by traveling to new places, seeking new information and trying new things ideas. Nayar experimented when it used the EFCS concept. This concept revers ed the hierarchal organizational structure by which he valued the ideas and thoughts of his employees on a greater scale. He saw it best to get information from the people who where ctually dealing with the outside world daily, and knew what the customers wanted.Opportunities for Nayar to improve his use of the skills that encourage and support innovative organizations Ultimately, Nayar worked the discovery skills very well. He made rational thought through decisions that ended up benefiting his company greatly. I do feel that although Nayar changed the traditional organizational hierarchy, he cannot forget about his managers and higher level executives. Although he bridged the gap and received valuable information, he has to keep in mind that he placed people in those ositions for a reason and therefore he should value their opinions on the situation as well.Networking is also something he has to make sure he continues to build on. This is very important when trying to build an org anization on a global scale.

Assessment Type

The general goal is to introduce and develop the skills needed to conceptualise a problem and a viable research topic. Students will make use of available literature, design a research strategy, evaluate, organise, and integrate relevant data (both existing and new), derive useful solutions, and communicate those solutions in an appropriate form to clients and colleagues. The module will prepare students to continue their own professional education and contribute to the development of the profession as a whole, at a standard commensurate with the current level of knowledge. The module surveys the basic processes of research methodology as practised in the social sciences. Underlying principles of science and logic are emphasised and special attention is directed toward the recognition of common sources of error and bias in the implementation and interpretation of research studies as it affects the outcomes of research utilisation. You are required to submit a research proposal. The content of the document produced by each student is required to cover the specific areas and to be within specific maximum word lengths (marks allocation and word lengths in brackets) as follows: 1. Title and Introduction. Form a clear title of a proposed research. Elaborate on the background of the industry and/or company to be researched as well as the problem or issue identified. Also explain the significance and rationale of the proposed research. (15 marks / 800 words maximum) 2. Research Questions. Construct the questions to be answered in the proposed research. (5 marks / 100 words maximum) 3. Research Objectives and Framework. State the research objectives in terms of the factors or causes identified (independent variables) and their relationships with the identified problem or issue (dependent variable). Following the stated objectives, construct a proposed research model or conceptual framework. (5 marks / 100 words maximum) 4. Literature Review. With reference to various relevant literatures, write a critical review and analysis of both the conceptual/theoretical and practical aspects of the identified problem/issue and factors/causes. (40 marks / 2,000 words maximum) 5. Research Methodology and Design. Elaborate the concept, types and approaches in research. Propose a research design for the research topic selected with detailed explanation on elements such as the sample, sample size, types and sources of information, collection methods and operationalisation or measurement of variables. (15 marks / 800 words maximum) 6. Ethical Considerations. Identify ethical issues involved and steps taken to prevent breach of research ethics. (5 marks / 100 words maximum) 7. Timescale or Gantt Chart. Construct a Gantt Chart in weeks that includes the stages and milestones of the research tasks and their respective time allocations. 5 marks / 100 words maximum) 8. References. Using the Harvard referencing system, provide a comprehensive list of references. (10 marks) Assessment Requirements: †¢ The submission of your work for assessment should be organised and clearly structured in a report format as outlined in 1. 0 to 8. 0 above. †¢ Maximum word length allowed is 4000 words, which includes sections 1. 0 to 7. 0 in the report. The word coun t excludes section 8. 0. †¢ This assignment is worth 100% of the final assessment of the module. Student is required to submit a type-written document in Microsoft Word format with Times New Roman font type, size 12 and line spacing of 1. 5. †¢ The Harvard Style of Referencing system is COMPULSORY. †¢ Indicate the sources of information and literature review by including all the necessary citations and references adopting the Harvard Referencing System. †¢ Students who have been found to have committed acts of Plagiarism are automatically considered to have failed the entire semester. If found to have breached the regulation for the second time, you will be asked to leave the course. Plagiarism involves taking someone else’s words, thoughts, ideas or essays from online essay banks and trying to pass them off as your own. It is a form of cheating which is taken very seriously. Take care of your work and keep it safe. Don’t leave it lying around where your classmates can find it. Malaysian Qualifications Agency Learning Outcomes Module Learning Outcomes: †¢ Demonstrate the skills necessary to assess and interpret existing research as a prelude to carrying out further investigation and the knowledge and understanding of range of research designs and their appropriate utilization. Conceptualise a problem; formulate hypotheses and objectives; design a research strategy, collecting, analyzing, and interpreting both quantitative and qualitative data, including commonly encountered statistical procedures. †¢ Understand the theoretical principles underlying inferential and descriptive statistics. †¢ Integrate the findings of existing research to ask a new research question. †¢ Engage in critical thinking when reading and comprehending research articles. Choose the most appropriate statistical analyses, interpret results, and write up the results accurately and completely. Notes on Plagiarism Harvard Referencing Plagiarism Plagiarism is passing off the work of others as your own. This constitutes academic theft and is a serious matter which is penalised in assignment marking. Plagiarism is the submission of an item of assessment containing elements of work produced by another person(s) in such a way that it could be assumed to be the student’s own work. Examples of plagiarism are: the verbatim copying of another person’s work without acknowledgement †¢ the close paraphrasing of another person’s work by simply changing a few words or altering the order of presentation without acknowledgement †¢ the unacknowledged quotation of phrases from another person’s work and/or the presenta tion of another person’s idea(s) as one’s own. Copying or close paraphrasing with occasional acknowledgement of the source may also be deemed to be plagiarism if the absence of quotation marks implies that the phraseology is the student’s own. Plagiarised work may belong to another student or be from a published source such as a book, report, journal or material available on the internet. Harvard Referencing The structure of a citation under the Harvard referencing system is the author’s surname, year of publication, and page number or range, in parentheses, as illustrated in the Smith example near the top of this article. †¢ The page number or page range is omitted if the entire work is cited. The author’s surname is omitted if it appears in the text. Thus we may say: â€Å"Jones (2001) revolutionized the field of trauma surgery. †¢ Two or three authors are cited using â€Å"and† or â€Å"†: (Deane, Smith, and Jones, 1991) or (Deane, Smith Jones, 1991). More than three authors are cited using et al. (Deane et al. 1992). †¢ An unknown date is cited as no date (Deane n. d. ). A reference to a reprint is cited with the original publication date in square brackets (Marx [1867] 1967 , p. 90). †¢ If an author published two books in 2005, the year of the first (in the alphabetic order of the references) is cited and referenced as 2005a, the second as 2005b. †¢ A citation is placed wherever appropriate in or after the sentence. If it is at the end of a sentence, it is placed before the period, but a citation for an entire block quote immediately follows the period at the end of the block since the citation is not an actual part of the quotation itself. †¢ Complete citations are provided in alphabetical order in a section following the text, usually designated as â€Å"Works cited† or â€Å"References. † The difference between a â€Å"works cited† or â€Å"references† list and a bibliography is that a bibliography may include works not directly cited in the text. †¢ All citations are in the same font as the main text. Examples Examples of book references are: †¢ Smith, J. (2005a). Dutch Citing Practices. The Hague: Holland Research Foundation. †¢ Smith, J. (2005b). Harvard Referencing. London: Jolly Good Publishing. In giving the city of publication, an internationally well-known city (such as London, The Hague, or New York) is referenced as the city alone. If the city is not internationally well known, the country (or state and country if in the U. S. ) are given. An example of a journal reference: †¢ Smith, John Maynard. â€Å"The origin of altruism,† Nature 393, 1998, pp. 639–40. An example of a newspaper reference: †¢ Bowcott, Owen. â€Å"Street Protest†, The Guardian, October 18, 2005, accessed February 7, 2006.

You can choose the topic Essay Example | Topics and Well Written Essays - 1750 words

You can choose the topic - Essay Example She as well examined anything she could come across concerning every level of the pregnancy and she trained each day. She felt great and her blood job was the best the doctor’s office had witnessed in a pregnancy in a lengthy time. She then studied techniques of delivery and after taking part in many classes and examining a bunch of manuscripts; she concluded that the best would be for her to undergo labor and delivery logically. Susan and her husband had a personal teacher who directed them on the Bradley Technique of childbirth that educated one of how to respire and concentrate. She did not need the epidural medicines in her child’s bloodstream and understood it would likely remain uneasy for the baby; however, it would be good for the child. She had absolutely no difficulties in her pregnancy. When the day at last arrived that her water impulsively cracked at 41 weeks, her initial experience with labor started. She underwent 19 hours of labor, however, the final couple of hours were the major passionate from the moment they concluded to start Pitocin. Lastly, at 9.20 PM on July 31 1998, their young son came into this globe weighing 9 Ibs and 7.6 oz. the baby was 21 inches tall and produced a healthy cry. There was absence of difficulties in labor or delivery. The baby began breastfeeding inside ten minutes of birth and was 9/9 on the APGAR scale. As previously said, she studied and examined anything she could come across while she was pregnant to make well-versed decisions. This was her personality and likely an item of her career of being a health transcriptionist. She had the OB/GYN mark a three page typewritten Birth Plan that she had collected after carrying all the study and looking for the matters that were significant to her. The Birth Plan was inclusive of Labor, Delivery, and Postpartum aspirations. She had the ability to study, examine all the views, and make conclusions on what they considered best for

Cultural Literature Review Article Example | Topics and Well Written Essays - 750 words

Cultural Literature Review - Article Example Looking back at the historical development of the nursing profession to give the nurses and those planning to become one, insight for a best health care system today and in the future, is the main objective of Karen J. Egenes in her article History of Nursing (n.d), as she stated in her summary (p.23). In her introductory words, she implied that understanding the history of nursing would highlight the importance of this profession in the health care system of the nation. That’s why the article presented an overview of the history of nursing, especially with the nursing in the United States, with the contributions of selected leaders and influence of the societal trends (p.2). It is impossible to speak of the history of nursing without mentioning Florence Nightingale. Egenes’ article remarked that Nightingale laid the foundation of nursing as a profession. She turned down offers of marriage and pursued studies in health, despite her parents opposition, because â€Å"she believed that she had been called to dedicate her life to the service of humanity†(p.4). This is the same spirit that dominates the nurses today. Egenes’ objective in writing her article is considerably achievable. In fact, according to Jeff Durham (2010), in his discussion of the duties and responsibilities of a nurse, in his article The Role of a Nurse, he emphasized the important role of a nurse in the patient’s recovery, as well as protecting the patient. Actually, many nurses go above and beyond their call of duty. Durham realistically outlined in his article the nurse’s emotional involvement in their patient. Besides being a caregiver, a nurse also portrays the role as patient’s teacher, a counselor, and a trusted friend. This article of Durham evidently shows that nurses are being appreciated and their importance in health care system is being recognized. In a personal interview to Donna E. Shalala, the appointed chair in the year 2009 of th e Robert Wood Johnson Foundation (RWJF) Initiative on the Future of Nursing at the Institute of Medicine (IOM), regarding committee’s report â€Å"about transforming the health care system within the newly legislated Affordable Care Act†, she openly acknowledged that â€Å"unless people understand that nursing is central to improving the quality of health care, we will never be able to improve that quality in this country† (Nickitas, 2011). Since nurses role are being appreciated, much is expected in their competence amidst the increased migration of varied cultural background in the United States nowadays. A nurse flexibility face the challenge while adapting to different culture, beliefs and practices of their immigrant patient. So the key method to maintain efficiency on nursing is to familiarize oneself of the cultural background of the immigrant patient. Acquiring knowledge and understanding of their social structure, their medical practices and even their religious beliefs are extremely important in giving appropriate care to a patient with such cultural background. According to a module for study article, entitled Health and Health Care of Filipino American Elders, â€Å"Filipino Americans now rank as the second largest Asian group in the United States with over 1.8 million individuals reported in 2000 census† (McBride, n.d.). Thus, the article equipped us knowledge on their cultural backgroun

A reaction to 3 articles Essay Example | Topics and Well Written Essays - 2500 words

A reaction to 3 articles - Essay Example What he seems to be categorical however is that despite Japan’s intransigence about foreign workers, they have to move with urgency and resolve legal hurdles deterring foreign workers coming to Japan as Japan is staring at a crisis soon to come of lack of workers in vital sectors as the Japanese population declines and becomes aged. At the beginning of the article, Chico says that for Japan to continue maintaining economic relevance in the next decades, it will â€Å"depend on its ability to-and its willingness-to grow by seeking outside help.†He cites the case of foreign nurses and the odds they face-they must pass a test that â€Å"almost no foreigner passes.† He explains that Japan has â€Å"deep misgivings about immigration and has tightly controlled the ability of foreigners to live and work† in Japan. He explains that with her declining population, the government will have but, to source foreign workers. The government is taking steps towards loosening of grip on immigration and in fact, it hopes to double the number of highly skilled foreign workers within a decade. He nonetheless observes that Japan is on course to have three workers for every two retirees by 2060.Noting that Japan has a program to that effect-the economic partnership program- with Indonesia and Philipines,he howeve r observes that the program has a flaw. Throughout the article, he shows that Japan has a need for skilled labour but it is stuck with restrictive rules like on language. He indicates that a language test with a pass rate of less than 1 percent will always be criticized.

Online Learning versus Classroom Learning Essay Example | Topics and Well Written Essays - 750 words

Online Learning versus Classroom Learning - Essay Example For the reason that there is no face-to-face interaction with the teacher, online learning gives more control to the learner and less to the educator. We are moving from a mode where the institution is in charge and provides context, to the mode where the learner is in charge and offers the context.Despite the fact that most learning occurs outside the classroom, most of one’s time spent as a student has probably been in a "traditional" classroom. Traditional classroom learning is more often than not focused on the teacher. Information tends to flow from instructor to students, and therefore can be more passive for students. This is often represented by the phrase "sage on the stage" since the teacher must in some way pass his or her knowledge on to the student. It goes without saying that many lecturers in the traditional classroom employ a very learner-focused composition as the online classroom explained above. While this is a potential, it is also rare. Since most teachers were trained in instructor-focused classrooms it is very difficult for them to break from this pattern. The online classroom proficiency and student proclivities in that environment are much more fitting for a learner-focused environment.Online learning is focused more on the student. Additional information (in the form of questions or comments) often flows from the student to the instructor (or CBT system). As a result of learners constructing their own learning, they are considered to be more effective. As more institutes begin to offer online educational programmes, analysts predict that more and more students will enroll in them. In fact, according to International Data Corporation, a market research firm, the number of students enrolled in distance-learning educational programmes will increase to an estimated 2.23 million in 2002, from 710,000 in 1998.

Families in Poverty Assignment Example | Topics and Well Written Essays - 1500 words

Families in Poverty - Assignment Example 1d. Women, infant and children get benefited from WIC as they get food supplement, free information on health, milk and formulas for babies, immunization referrals and reduction in medical expenses. However, the cons of this program is that it gets misused by the family who can take care of themselves, difficult to access for women living in rural areas and results in increase prices for formulas for parent not on WIC program, since half of the formula being sold in US is been subsidized by WIC. (Rector & Sheffield, 2011) 2a. After reading the article it can be said that the writer was implicitly implying that the poor we consider today are not really poor. If one pays attention closely, poor according to statistics own air-conditioning, a car, X-box, PlayStation and are not living over crowdedly, which shows that they are better off than the middle class of previous years. The sarcasm that the poor worries about paying the air-conditioning bill and putting food on the table implies that the eligibility criteria for government welfare should be reevaluated. The question ‘how a poor person can be poor, if they own a TV and air-conditioning?’ is actually an exclamation rather than question, because what poverty actually means is that the person is homeless, foodless and in time of severe hardship, rather than worrying about being not able to pay AC bills. 2b. As of now, owning such items will disqualify the participant form being considered poor, because the government definition of a poor household include house/apartment installed with air-conditioning, television, car, two color televisions, DVD player and VCR. 3. If I could formulate a plan or strategy to remove poverty, it will include all the departments of the State and a meeting at national level (Smiley & West, 2012). The plan will comprise of few different techniques and this will involve increasing of minimum wage to $11 per hour, as lack of money is the major

Offshoring Essay Example | Topics and Well Written Essays - 250 words

Offshoring - Essay Example Methods: In a bid to ensure the data collected is accurate, a quantitative approach has been employed. Once collected, the data is analyzed by running a regression using the Statistical Package for the Social Science (SPSS). Findings: the research has found 93% R-Square value that essentially implies that close to 93% of the variation in the value of the dependent is well explained by the variation in the independent variation. Also, the results showed a 0.000137 p-value for the off-shoring coefficient, so the p-value is lower than 0.05. In essence, this is interpreted to mean that a change in the percentage of material off shoring indeed has an effect on labor and productivity. This research paper has been made in order to complement to pass of bachelor degree in business administration program. I would like to start by thanking God for helping me to finish my thesis, also I would like to say thanks to whoever have helped me directly or indirectly with my thesis and studying and that includes a very special thank for my supervisor (PhD. ShlairAbdulkhaleq) and Dean (PhD Fatih Çura). Also I would like to thank my parents whom supported me from the start, and of course I would like to say thanks to my husband for everything .In the end, I would like to tell you that I’m really happy from the bottom of my heart that I was able to do this thesis and it’s just a step towards the success that I’m dreaming of, and I hope that it will help the upcoming student in their studies and they can benefit from the information below. Modern businesses are driven by innovation. Outsourcing is one of the methods of innovation undertaken by different business enterprises. Outsourcing enables to open new horizons that in turn lead to increased productivity. However, any new idea brings along its own set of conditions and parameters with it. Outsourcing is no exception in this regard and it has certain prerequisites and parameters that need to be

Music and Baroque Period Essay Example | Topics and Well Written Essays - 500 words

Music and Baroque Period - Essay Example The advancement of music and its various genres found competent handling from the likes of great musical composers such as Johann Sebastian Bach, George Friederic Handel, Antonio Vivaldi and Jean-Baptiste Lully. In their works, can be found the different kinds of music. In the work of Bach and Handel, the Oratorio flourished, and the Opera became popular due to Handel's compositions. The music of the Church also changed, with greater emphasis laid on the cantata, as well as toccatas, and fugue. This was the period, when court life was at its peak and the master of court-style composing was attributed to Jean-Baptiste Lully, while the Concerto grosso, found great meaning in the hands of Antonio Vivaldi its master. Baroque music can be divided into three periods - early, middle and late characterized by different styles. The early period was entrenched in religion while the middle period was characterized by music played in the court. This was the age of ‘absolutism’ when the power of the Church and the state created the need for organized public music and Chamber music. Music began to be treated as an art to be taught under the auspices of a formal structure. Jean-Baptiste Lully’s works during that period is marked by acquiescence to the demands made by the court and thus we have in collaborating with Molià ¨re in comà ©die-ballets, i.e. plays with dancing. He composed operas for the King, creating the tragà ©die lyrique based on libretti where the main focus was on the conflict.

Unrequited Love Essay Example for Free

Unrequited Love Essay Everyone eventually meets the man or woman of their dreams. Whether it’s online or in your local grocery store, everyone is bound to meet their perfect match. According to Harville Hendrix, the author of the article The Mystery of Attraction, he mentions that there are three theories that he has noticed or have looked more into and he also has his own theory. The three theories that he mentions are as follows: biological theory, exchange theory, and the persona theory. When it comes to his own theory, Hendrix states that of the conscious theory. Although Hendrix provides in depth detail of the three theories, I do not agree in those theories and therefore believe in Hendrix’ own theory. The first theory that Hendrix describes is that of the biological theory, which means that women select men who are that of â€Å"alpha† qualities. They choose men who will provide for their future family or supply themselves with nourishment. Society makes men feel that they have all the weight on their shoulders and men are made to fulfill the manly duties. When I look for certain men, I choose men that have an attractive personality. Some people just choose the looks, but I focus more on the way he portrays himself in front of me and other people. My dating experience has been bumpy and slow these past years. I have only had one boyfriend and have learned nothing. As everyone always says that you always find your soul mate in college, I believe that to be true. As I have not found one yet, I still believe in that opinion. As I see everyone else going out with their boyfriends/girlfriends, it makes me feel sad. I was never much of a social person when it comes to meeting other people. Therefore, I do not agree with this theory because I believe that it is not all about choosing your mate on their physical traits, but more on their personality. The second theory Hendrix explains in detail is that of the exchange theory. He clarifies that the selection of our mates is determined by the equivalence of our choices. We focus more on the physical appearance rather than the personality he/she portrays. I have noticed that a lot in my eighteen years of life. A lot of my former friends and classmates would say, â€Å"Oh, he/she is hot, I am going to go for him/her! † They already pick out their â€Å"future† boyfriend/girlfriend at first sight. They try to get that guy/girl as close as to themselves as they can! Some go to extreme measures like the story my friend told me. This story was about a guy who carefully picked out his girlfriend on the beautiful qualities she possessed. He was dumbfounded on the perfect qualities she portrayed when they hung out. As he got to know her more, she was not as what she seemed to be. He realized that the beauty she possessed on the outside was not as pretty on the inside. She acted very horribly to him and treated him like he was garbage. After that, he focused more on the personality of a girl, rather than the beauty. Going off that story, I disagree with the exchange theory because if you go off this theory, it will lead to the destruction of love. The third and final theory that Hendrix concludes with is that of the persona theory. This theory states that whoever your mate is they should boost up your self-esteem when you are seen with this person. A persona, which is a second image we portray to other people, comes in effect when we are with our soul mate. We act a certain way around our boyfriend/girlfriend, but when we are around other people or in public, we tend to have a second personality towards them. It is sort of like a two faced person. Society likes to see an all-around good person in public. They do not like to see a person who is contradictory towards themself. Not being yourself is making yourself seem that you are not confident with your self-esteem and want to become this sort of person. Concluding with the final theory, I disagree with this theory because you are not supposed to be a second person around society but not portray the same self that you usually do around your boyfriend/girlfriend. Hendrix states 3 theories that do not seem to work. His own theory, the conscious theory, seems to go along to what seems to be the personality of the person, rather than the looks. Seeing my friends getting asked to prom and homecoming throughout my high school career was brutal. Always seeing them happy and having so much fun every time was horrible. Always being the third wheel was terrifying. Everyone experiences this sometime in their life, whether it is towards themselves or seeing it on television or in society. The internet is also a good way a person can meet their partner. It is so much easier online because you can pick out a guy that suits your specific needs. It will minimize to an amount that is perfect for viewing and you can even go on dates! It really gets you to know the guy without the looks, but focusing on the personality. The article states the theories that Hendrix explains are that of the biological, exchange and persona theories. He states that he observed the relationships between others and came up with these 3 theories. Even though I disagree with these 3 theories, I know I believe in the theory that Hendrix came up with on his own, which is the conscious theory. He says that people should not focus on the looks of the person, but rather the personality that the person possesses. I agree with Hendrix’s theory because your decision should not be based on the looks but more of the personality because it could go wrong in the end. In conclusion, the conscious theory is more of a better decision.

Alcohol Abuse Essay Example for Free

Alcohol Abuse Essay Drinking is: fun, makes me more sociable, makes me more relaxed, helps me forget all my problems and lastly, everyone drinks (attention). More than likely a lot of you have heard someone say these thing or even say these things yourself when it comes to drinking (connection). When in fact there is a lot more to drinking alcohol than you think (importance). Growing up I was surrounded by someone who did heavy drinking in my home, and for the past week of researching my topic I now know the toll alcohol take on people first hand (credibility). That is why after my presentation, I want my audience to know three main disadvantages of alcohol abuse which are: impairs judgment, harm the body, and may cause death (thesis). Body: According to drugfreeworld.org, â€Å"Alcohol is best understood as a drug that reduces a person’s ability to think rationally and distorts his or her judgment† (Foundation for a Drug-Free World, 2006–2013). In other words, Alcohol can make a person do things, and take chances they normally wouldn’t while sober (you factor). An example of this would be: becoming violent, experimenting with drugs, having unprotected sex, or drinking and driving. In a community- based study, Pernanen found that, â€Å"42 percent of violent crimes reported to the police involved alcohol† (statistic). In the Chicago tribune there was an article about a Lombard man Adam B. Hearn, 33, he was sentenced 6  ½ years for aggravated battery. His toxic reported stated that he was heavily intoxicated. Hearn said. â€Å"I made a horrible decision and I’m sick about it† (Ward, 2012). Now that I have talked about how alcohol abuse impairs your judgment, Listen to the ways alcohol abuse harms the body (signpost). Studies stated from Jack E. Henningfield, states that â€Å"when someone has an alcoholic drink, the stomach absorbs about 20 percent of the alcohol, and the remaining 80 percent is absorbed by the small intestine† (Henning field, 2008). In other words majority of alcohol is absorbed in your small intestine. (You factor). After being absorbed the alcohol enters the blood stream, where the liver breaks down 90 percent of the alcohol in a process called oxidation. Once all the alcohol is broken down it passes directly from the digestive tract to the brain. By Alcohol being a depressant it blocks some of the messages trying to get to the brain from neurons. Such as: altering a person perception, movement, vision, hearing, and emotions. This is why people who over use alcohol may stagger, lose coordination, or slur speech. Alcohol can also have harm on your outer appearance. Alcohol abuse can: cause ageneses to skin, brittle hair, crackled lips, increase the outbreak of acne and increase the blood flow to skin as well, making someone sweat and look fused. Alcohol can also cause the reduction of blood flow to the muscles. This can cause server muscles cramps. Alcohol abuse does not just harm outer appearances it can also harm you internally. The liver is known to suffering the most damage, since it is the foundation in the alcoholic elimination process. The main condition is Cirrhosis of the liver. Heartburn and stomach ulcers can also result in alcohol abuse. Other links have been made that it can cause cancer of the mouth, stomach and intestines. A much known condition to the body that alcohol abuse forms is alcohol poising. Alcohol poisoning can cause the body to violently vomit, experience extreme sleepiness, go unconscious, difficulty breathing, low blood sugar, and seizure. Furthermore, it is important to know the harm alcohol does to the body, to prevent more serious conditions that can lead to death (sign post). As indicated by Jack E. Henningfield in his book Alcohol Addiction: Not Worth the Buzz, â€Å"Each year, approximately 100,000 deaths can be attributed to drinking-either directly or indirectly† (Henningfield, 2008). This does not simply mean that 100,000 died just from taking a drink but from the poor decision that come from being drunk and from the harm that alcohol causes to the body (you factor). It is a fact that more than half of car accidents and twenty five percent of suicides are somehow linked to the use of alcohol (Henningfield, 2008). When you think about it these are all deaths that are avoidable if people would have chosen to drink less. Every year people die from alcohol abuse; many do not know the disadvantages of drinking alcohol and that is why I chose to do this research. Conclusion: Today I informed you all of the three main disadvantages of drinking too much alcohol which are: impairs your judgment, harms your body, and may cause death (summary). Now that you all know more about the disadvantages of drinking alcohol please take them into consideration (action). So the next time you are having a drink, or getting in the car with a drunk driver, ask yourselves, who is in control (ending)?

Single Stage to Orbit (SSTO) Propulsion System

Single Stage to Orbit (SSTO) Propulsion System This paper discusses the relevant selection criteria for a single stage to orbit (SSTO) propulsion system and then reviews the characteristics of the typical engine types proposed for this role against these criteria. The engine types considered include Hydrogen/Oxygen (H2/O2) rockets, Scramjets, Turbojets, Turborockets and Liquid Air Cycle Engines. In the authors opinion none of the above engines are able to meet all the necessary criteria for an SSTO propulsion system simultaneously. However by selecting appropriate features from each it is possible to synthesise a new class of engines which are specifically optimised for the SSTO role. The resulting engines employ precooling of the airstream and a high internal pressure ratio to enable a relatively conventional high pressure rocket combustion chamber to be utilised in both airbreathing and rocket modes. This results in a significant mass saving with installation advantages which by careful design of the cycle thermodynamics enable s the full potential of airbreathing to be realised. The SABRE engine which powers the SKYLON launch vehicle is an example of one of these so called Precooled hybrid airbreathing rocket engines and the conceptual reasoning which leads to its main design parameters are described in the paper. Keywords: Reusable launchers, SABRE, SKYLON, SSTO 1.Introduction Several organisations world-wide are studying the technical and commercial feasibility of reusable SSTO launchers. This new class of vehicles appear to offer the tantalising prospect of greatly reduced recurring costs and increased reliability compared to existing expendable vehicles. However achieving this breakthrough is a difficult task since the attainment of orbital velocity in a re-entry capable single stage demands extraordinary propulsive performance. Most studies to date have focused on high pressure hydrogen/oxygen (H2/O2) rocket engines for the primary propulsion of such vehicles. However it is the authors opinion that despite recent advances in materials technology such an approach is not destined to succeed, due to the relatively low specific impulse of this type of propulsion. Airbreathing engines offer a possible route forward with their intrinsically higher specific impulse. However their low thrust/weight ratio, limited Mach number range and high dynamic pressure trajectory have in the past cancelled any theoretical advantage. By design review of the relevant characteristics of both rockets and airbreathing engines this paper sets out the rationale for the selection of deeply precooled hybrid airbreathing rocket engines for the main propulsion system of SSTO launchers as exemplified by the SKYLON vehicle [1]. 2. Propulsion Candidates This paper will only consider those engine types which would result in politically and environmentally acceptable vehicles. Therefore engines employing nuclear reactions (eg: onboard fission reactors or external nuclear pulse) and chemical engines with toxic exhausts (eg: fluorine/oxygen) will be excluded. The candidate engines can be split into two broad groups, namely pure rockets and engines with an airbreathing component. Since none of the airbreathers are capable of accelerating an SSTO vehicle all the way to orbital velocity, a practical vehicle will always have an onboard rocket engine to complete the ascent. Therefore the use of airbreathing has always been proposed within the context of improving the specific impulse of pure rocket propulsion during the initial lower Mach portion of the trajectory. Airbreathing engines have a much lower thrust/ weight ratio than rocket engines (à ¢Ã¢â‚¬ °Ã‹â€ 10%) which tends to offset the advantage of reduced fuel consumption. Therefore vehicles with airbreathing engines invariably have wings and employ a lifting trajectory in order to reduce the installed thrust requirement and hence the airbreathing engine mass penalty. The combination of wings and airbreathing engines then demands a low flat trajectory (compared to a ballistic rocket trajectory) in order to maximise the installed performance (i.e. (thrust-drag)/fuel flow). This high dynamic pressure trajectory gives rise to one of the drawbacks of an airbreathing approach since the airframe heating and loading are increased during the ascent which ultimately reflects in increased structure mass. However the absolute level of mass growth depends on the relative severity of the ascent as compared with reentry which in turn is mostly dependant on the type of airbreathing engine selected. An a dditional drawback to the low trajectory is increased drag losses particularly since the vehicle loiters longer in the lower atmosphere due to the lower acceleration, offset to some extent by the much reduced gravity loss during the rocket powered ascent. Importantly however, the addition of a set of wings brings more than just performance advantages to airbreathing vehicles. They also give considerably increased abort capability since a properly configured vehicle can remain in stable flight with up to half of its propulsion systems shutdown. Also during reentry the presence of wings reduces the ballistic coefficient thereby reducing the heating and hence thermal protection system mass, whilst simultaneously improving the vehicle lift/drag ratio permitting greater crossrange. The suitability of the following engines to the SSTO launcher role will be discussed since these are representative of the main types presently under study within various organisations world-wide: Liquid Hydrogen/Oxygen rockets Ramjets and Scramjets Turbojets/Turborockets and variants Liquid Air Cycle Engines (LACE) and Air Collection Engines (ACE) Precooled hybrid airbreathing rocket engines (RB545/SABRE) 3.Selection Criteria The selection of an optimum propulsion system involves an assessment of a number of interdependant factors which are listed below. The relative importance of these factors depends on the severity of the mission and the vehicle characteristics. Engine performance Useable Mach number and altitude range. Installed specific impulse. Installed thrust/weight. Performance sensitivity to component level efficiencies. Engine/Airframe integration Effect on airframe layout (Cg/Cp pitch trim structural efficiency). Effect of required engine trajectory (Q and heating) on airframe technology/materials. Technology level Materials/structures/aerothermodynamic and manufacturing technology. Development cost Engine scale and technology level. Complexity and power demand of ground test facilities. Necessity of an X plane research project to precede the main development program. 4.Hydrogen/Oxygen Rocket Engines Hydrogen/oxygen rocket engines achieve a very high thrust/weight ratio (60-80) but relatively low specific impulse (450-475 secs in vacuum) compared with conventional airbreathing engines. Due to the relatively large à ¢Ã‹â€ Ã¢â‚¬  V needed to reach low earth orbit (approx 9 km/s including gravity and drag losses) in relation to the engine exhaust velocity, SSTO rocket vehicles are characterised by very high mass ratios and low payload fractions. The H2/O2 propellant combination is invariably chosen for SSTO rockets due to its higher performance than other alternatives despite the structural penalties of employing a very low density cryogenic fuel. In order to maximise the specific impulse, high area ratio nozzles are required which inevitably leads to a high chamber pressure cycle in order to give a compact installation and reduce back pressure losses at low altitude. The need to minimise back pressure losses normally results in the selection of some form of altitude compensating nozzle since conventional bell nozzles have high divergence and overexpansion losses when running in a separated condition. The high thrust/weight and low specific impulse of H2/O2 rocket engines favours vertical takeoff wingless vehicles since the wing mass and drag penalty of a lifting trajectory results in a smaller payload than a steep ballistic climb out of the atmosphere. The ascent trajectory is therefore extremely benign (in terms of dynamic pressure and heating) with vehicle material selection determined by re-entry. Relative to airbreathing vehicles a pure rocket vehicle has a higher density (gross take off weight/volume) due to the reduced hydrogen consumption which has a favourable effect on the tankage and thermal protection system mass. In their favour rocket engines represent broadly known (current) technology, are ground testable in simple facilities, functional throughout the whole Mach number range and physically very compact resulting in good engine/airframe integration. Abort capability for an SSTO rocket vehicle would be achieved by arranging a high takeoff thrust/weight ratio (eg: 1.5) and a large number of engines (eg: 10) to permit shutdown of at least two whilst retaining overall vehicle control. From an operational standpoint SSTO rockets will be relatively noisy since the high takeoff mass and thrust/weight ratio results in an installed thrust level up to 10 times higher than a well designed airbreather. Reentry should be relatively straightforward providing the vehicle reenters base first with active cooling of the engine nozzles and the vehicle base. However the maximum lift/drag ratio in this attitude is relatively low (approx 0.25) limiting the maximum achievable crossrange to around 250 km. Having reached a low altitude some of the main engines would be restarted to control the subsonic descent before finally effecting a tailfirst landing on legs. Low crossrange is not a particular problem providing the vehicle operator has adequate time to wait for the orbital plane to cross the landing site. However in the case of a military or commercial operator this could pose a serious operational restriction and is consequently considered to be an undesirable characteristic for a new launch vehicle. In an attempt to increase the crossrange capability some designs attempt nosefirst re-entry of a blunt cone shaped vehicle or alternatively a blended wing/body configuration. This approach potentially increases the lift/drag ratio by reducing the fuselage wave drag and/or increasing the aerodynamic lift generation. However the drawback to this approach is that the nosefirst attitude is aerodynamically unstable since the aft mounted engine package pulls the empty center of gravity a considerable distance behind the hypersonic center of pressure. The resulting pitching moment is difficult to trim without adding nose ballast or large control surfaces projecting from the vehicle base. It is expected that the additional mass of these components is likely to erode the small payload capability of this engine/vehicle combination to the point where it is no longer feasible. Recent advances in materials technology (eg: fibre reinforced plastics and ceramics) have made a big impact on the feasibility of these vehicles. However the payload fraction is still very small at around 1-2% for an Equatorial low Earth orbit falling to as low as 0.25% for a Polar orbit. The low payload fraction is generally perceived to be the main disadvantage of this engine/vehicle combination and has historically prevented the development of such vehicles, since it is felt that a small degree of optimism in the preliminary mass estimates may be concealing the fact that the real payload fraction is negative. One possible route forward to increasing the average specific impulse of rocket vehicles is to employ the atmosphere for both oxidiser and reaction mass for part of the ascent. This is an old idea dating back to the 1950s and revitalised by the emergence of the BAe/Rolls Royce HOTOL project in the 1980s [2]. The following sections will review the main airbreathing engine candidates and trace the design background of precooled hybrid airbreathing rockets. 5.Ramjet and Scramjet Engines A ramjet engine is from a thermodynamic viewpoint a very simple device consisting of an intake, combustion and nozzle system in which the cycle pressure rise is achieved purely by ram compression. Consequently a separate propulsion system is needed to accelerate the vehicle to speeds at which the ramjet can takeover (Mach 1-2). A conventional hydrogen fuelled ramjet with a subsonic combustor is capable of operating up to around Mach 5-6 at which point the limiting effects of dissociation reduce the effective heat addition to the airflow resulting in a rapid loss in nett thrust. The idea behind the scramjet engine is to avoid the dissociation limit by only partially slowing the airstream through the intake system (thereby reducing the static temperature rise) and hence permitting greater useful heat addition in the now supersonic combustor. By this means scramjet engines offer the tantalising prospect of achieving a high specific impulse up to very high Mach numbers. The consequent de crease in the rocket powered à ¢Ã‹â€ Ã¢â‚¬  V would translate into a large saving in the mass of liquid oxygen required and hence possibly a reduction in launch mass. Although the scramjet is theoretically capable of generating positive nett thrust to a significant fraction of orbital velocity it is unworkable at low supersonic speeds. Therefore it is generally proposed that the internal geometry be reconfigured to function as a conventional ramjet to Mach 5 followed by transition to scramjet mode. A further reduction of the useful speed range of the scramjet results from consideration of the nett vehicle specific impulse ((thrust-drag)/fuel flow) in scramjet mode as compared with rocket mode. This tradeoff shows that it is more effective to shut the scramjet down at Mach 12-15 and continue the remainder of the ascent on pure rocket power. Therefore a scramjet powered launcher would have four main propulsion modes: a low speed accelerator mode to ramjet followed by scramjet and finally rocket mode. The proposed low speed propulsor is often a ducted ejector rocket system employing the scramjet injector struts as both ejector nozzles to entrain air at low speeds and later as the rocket combustion chambers for the final ascent. Whilst the scramjet engine is thermodynamically simple in conception, in engineering practice it is the most complex and technically demanding of all the engine concepts discussed in this paper. To make matters worse many studies including the recent ESA Winged Launcher Concept study have failed to show a positive payload for a scramjet powered SSTO since the fundamental propulsive characteristics of scramjets are poorly suited to the launcher role. The low specific thrust and high specific impulse of scramjets tends to favour a cruise vehicle application flying at fixed Mach number over long distances, especially since this would enable the elimination of most of the variable geometry. Scramjet engines have a relatively low specific thrust (nett thrust/airflow) due to the moderate combustor temperature rise and pressure ratio, and therefore a very large air mass flow is required to give adequate vehicle thrust/weight ratio. However at constant freestream dynamic head the captured air mass flow reduces for a given intake area as speed rises above Mach 1. Consequently the entire vehicle frontal area is needed to serve as an intake at scramjet speeds and similarly the exhaust flow has to be re-expanded back into the original streamtube in order to achieve a reasonable exhaust velocity. However employing the vehicle forebody and aftbody as part of the propulsion system has many disadvantages: The forebody boundary layer (up to 40% of the intake flow) must be carried through the entire shock system with consequent likelihood of upsetting the intake flow stability. The conventional solution of bleeding the boundary layer off would be unacceptable due to the prohibitive momentum drag penalty. The vehicle undersurface must be flat in order to provide a reasonably uniform flowfield for the engine installation. The flattened vehicle cross section is poorly suited to pressurised tankage and has a higher surface area/volume than a circular cross section with knock-on penalties in aeroshell, insulation and structure mass. Since the engine and airframe are physically inseparable little freedom is available to the designer to control the vehicle pitch balance. The single sided intake and nozzle systems positioned underneath the vehicle generate both lift and pitching moments. Since it is necessary to optimise the intake and nozzle system geometry to maximise the engine performance it is extremely unlikely that the vehicle will be pitch balanced over the entire Mach number range. Further it is not clear whether adequate CG movement to trim the vehicle could be achieved by active propellant transfer. Clustering the engines into a compact package underneath the vehicle results in a highly interdependant flowfield. An unexpected failure in one engine with a consequent loss of internal flow is likely to unstart the entire engine installation precipitating a violent change in vehicle pitching moment. In order to focus the intake shock system and generate the correct duct flow areas over the whole Mach range, variable geometry intake/combustor and nozzle surfaces are required. The large variation in flow passage shape forces the adoption of a rectangular engine cross section with flat moving ramps thereby incurring a severe penalty in the pressure vessel mass. Also to maximise the installed engine performance requires a high dynamic pressure trajectory which in combination with the high Mach number imposes severe heating rates on the airframe. Active cooling of significant portions of the airframe will be necessary with further penalties in mass and complexity. Further drawbacks to the scramjet concept are evident in many areas. The nett thrust of a scramjet engine is very sensitive to the intake, combustion and nozzle efficiencies due to the exceptionally poor work ratio of the cycle. Since the exhaust velocity is only slightly greater than the incoming freestream velocity a small reduction in pressure recovery or combustion efficiency is likely to convert a small nett thrust into a small nett drag. This situation might be tolerable if the theoretical methods (CFD codes) and engineering knowledge were on a very solid footing with ample correlation of theory with experiment. However the reality is that the component efficiencies are dependant on the detailed physics of poorly understood areas like flow turbulence, shock wave/boundary layer interactions and boundary layer transition. To exacerbate this deficiency in the underlying physics existing ground test facilities are unable to replicate the flowfield at physically representative sizes , forcing the adoption of expensive flight research vehicles to acquire the necessary data. Scramjet development could only proceed after a lengthy technology program and even then would probably be a risky and expensive project. In 1993 Reaction Engines estimated that a 130 tonne scramjet vehicle development program would cost $25B (at fixed prices) assuming that the program proceeded according to plan. This program would have included two X planes, one devoted to the subsonic handling and low supersonic regime and the other an air dropped scramjet research vehicle to explore the Mach 5-15 regime. 6.Turbojets, Turborockets and Variants In this section are grouped those engines that employ turbocompressors to compress the airflow but without the aid of precoolers. The advantage of cycles that employ onboard work transfer to the airflow is that they are capable of operation from sea level static conditions. This has important performance advantages over engines employing solely ram compression and additionally enables a cheaper development program since the mechanical reliability can be acquired in relatively inexpensive open air ground test facilities. 6.1 Turbojets Turbojets (Fig. 1) exhibit a very rapid thrust decay above about Mach 3 due to the effects of the rising compressor inlet temperature forcing a reduction in both flow and pressure ratio. Compressors must be operated within a stable part of their characteristic bounded by the surge and choke limits. In addition structural considerations impose an upper outlet temperature and spool speed limit. As inlet temperature rises (whilst operating at constant Wà ¢Ã‹â€ Ã… ¡T/P and N/à ¢Ã‹â€ Ã… ¡T) the spool speed and/or outlet temperature limit is rapidly approached. Either way it is necessary to throttle the engine by moving down the running line, in the process reducing both flow and pressure ratio. The consequent reduction in nozzle pressure ratio and mass flow results in a rapid loss in nett thrust. However at Mach 3 the vehicle has received an insufficient boost to make up for the mass penalty of the airbreathing engine. Therefore all these cycles tend to be proposed in conjunction with a subsonic combustion ramjet mode to higher Mach numbers. The turbojet would be isolated from the hot airflow in ramjet mode by blocker doors which allow the airstream to flow around the core engine with small pressure loss. The ramjet mode provides reasonable specific thrust to around Mach 6-7 at which point transition to rocket propulsion is effected. Despite the ramjet extension to the Mach number range the performance of these systems is poor due mainly to their low thrust/weight ratio. An uninstalled turbojet has a thrust/weight ratio of around 10. However this falls to 5 or less when the intake and nozzle systems are added which compares badly with a H2/O2 rocket of 60+. 6.2 Turborocket The turborocket (Fig. 2) cycles represent an attempt to improve on the low thrust/weight of the turbojet and to increase the useful Mach number range. The pure turborocket consists of a low pressure ratio fan driven by an entirely separate turbine employing H2/O2 combustion products. Due to the separate turbine working fluid the matching problems of the turbojet are eased since the compressor can in principle be operated anywhere on its characteristic. By manufacturing the compressor components in a suitable high temperature material (such as reinforced ceramic) it is possible to eliminate the ramjet bypass duct and operate the engine to Mach 5-6 whilst staying within outlet temperature and spool speed limits. In practice this involves operating at reduced nondimensional speed N/à ¢Ã‹â€ Ã… ¡T and hence pressure ratio. Consequently to avoid choking the compressor outlet guide vanes a low pressure ratio compressor is selected (often only 2 stages) which permits operation over a wider flow range. The turborocket is considerably lighter than a turbojet. However the low cycle pressure ratio reduces the specific thrust at low Mach numbers and in conjunction with the preburner liquid oxygen flow results in a poor specific impulse compared to the turbojet. 6.3 Expander Cycle Turborocket This cycle is a variant of the turborocket whereby the turbine working fluid is replaced by high pressure regeneratively heated hydrogen warmed in a heat exchanger located in the exhaust duct (Fig. 3). Due to heat exchanger metal temperature limitations the combustion process is normally split into two stages (upstream and downstream of the ma- LHLH LOx/LH2 Fig. 1 Turbo-ramjet Engine (with integrated rocket engine). LOx/LH2LH2 LOx/LH2 Fig. 2 Turborocket. LH2LOx/LH2 Fig. 3 Turbo-expander engine. trix) and the turbine entry temperature is quite low at around 950K. This variant exhibits a moderate improvement in specific impulse compared with the pure turborocket due to the elimination of the liquid oxygen flow. However this is achieved at the expense of additional pressure loss in the air ducting and the mass penalty of the heat exchanger. Unfortunately none of the above engines exhibit any performance improvement over a pure rocket approach to the SSTO launcher problem, despite the wide variations in core engine cycle and machinery. This is for the simple reason that the core engine masses are swamped by the much larger masses of the intake and nozzle systems which tend to outweigh the advantage of increased specific impulse. Due to the relatively low pressure ratio ramjet modes of these engines, it is essential to provide an efficient high pressure recovery variable geometry intake and a variable geometry exhaust nozzle. The need for high pressure recovery forces the adoption of 2 dimensional geometry for the intake system due to the requirement to focus multiple oblique shockwaves over a wide mach number range. This results in a very serious mass penalty due to the inefficient pressure vessel cross section and the physically large and complicated moving ramp assembly with its high actuation loads. Similarly the exhaust nozzle geometry must be capable of a wide area ratio variation in order to cope with the widely differing flow conditions (Wà ¢Ã‹â€ Ã… ¡T/P and pressure ratio) between transonic and high Mach number flight. A further complication emerges due to the requirement to integrate the rocket engine needed for the later ascent into the airbreathing engine nozzle. This avoids the prohibitive base drag penalty that would result from a separate dead nozzle system as the vehicle attempted to accelerate through transonic. 7. Liquid Air Cycle Engines (LACE) and Air Collection Engines (ACE) Liquid Air Cycle Engines were first proposed by Marquardt in the early 1960s. The simple LACE engine exploits the low temperature and high specific heat of liquid hydrogen in order to liquify the captured airstream in a specially designed condenser (Fig. 4). Following liquifaction the air is relatively easily pumped up to such high pressures that it can be fed into a conventional rocket combustion chamber. The main advantage of this approach is that the airbreathing and rocket propulsion systems can be combined with only a single nozzle required for both modes. This results in a mass saving and a compact installation with efficient base area utilisation. Also the engine is in principle capable of operation from sea level static conditions up to perhaps Mach 6-7. LH2 LO2 Liquid Air Turbopump Fig. 4 Liquid Air Cycle Engine (LACE). The main disadvantage of the LACE engine however is that the fuel consumption is very high (compared to other airbreathing engines) with a specific impulse of only about 800 secs. Condensing the airflow necessitates the removal of the latent heat of vaporisation under isothermal conditions. However the hydrogen coolant is in a supercritical state following compression in the turbopump and absorbs the heat load with an accompanying increase in temperature. Consequently a temperature pinch point occurs within the condenser at around 80K and can only be controlled by increasing the hydrogen flow to several times stoichiometric. The air pressure within the condenser affects the latent heat of vaporisation and the liquifaction temperature and consequently has a strong effect on the fuel/air ratio. However at sea level static conditions of around 1 bar the minimum fuel/air ratio required is about 0.35 (ie: 12 times greater than the stoichiometric ratio of 0.029) assuming that the hydrogen had been compressed to 200 bar. Increasing the air pressure or reducing the hydrogen pump delivery pressure (and temperature) could reduce the fuel/ air ratio to perhaps 0.2 but nevertheless the fuel flow remains very high. At high Mach numbers the fuel flow may need to be increased further, due to heat exchanger metal temperature limitations (exacerbated by hydrogen embrittlement limiting the choice of tube materials). To reduce the fuel flow it is sometimes proposed to employ slush hydrogen and recirculate a portion of the coolant flow back into the tankage. However the handling of slush hydrogen poses difficult technical and operational problems. From a technology standpoint the main challenges of the simple LACE engine are the need to prevent clogging of the condenser by frozen carbon dioxide, argon and water vapour. Also the ability of the condenser to cope with a changing g vector and of designing a scavenge pump to operate with a very low NPSH inlet. Nevertheless performance studies of SSTOs equipped with LACE engines have shown no performance gains due to the inadequate specific impulse in airbreathing mode despite the reasonable thrust/weight ratio and Mach number capability. The Air Collection Engine (ACE) is a more complex variant of the LACE engine in which a liquid oxygen separator is incorporated after the air liquifier. The intention is to takeoff with the main liquid oxygen tanks empty and fill them during the airbreathing ascent thereby possibly reducing the undercarriage mass and installed thrust level. The ACE principal is often proposed for parallel operation with a ramjet main propulsion system. In this variant the hydrogen fuel flow would condense a quantity of air from which the oxygen would be separated before entering the ramjet combustion chamber at a near stoichiometric mixture ratio. The liquid nitrogen from the separator could perform various cooling duties before being fed back into the ramjet airflow to recover the momentum drag. The oxygen separator would be a complex and heavy item since the physical properties of liquid oxygen and nitrogen are very similar. However setting aside the engineering details, the basic thermodynamics of the ACE principal are wholly unsuited to an SSTO launcher. Since a fuel/air mixture ratio of approximately 0.2 is needed to liquify the air and since oxygen is 23.1% of the airflow it is apparent that a roughly equal mass of hydrogen is required to liquify a given mass of oxygen. Therefore there is no saving in the takeoff propellant loading and in reality a severe structure mass penalty due to the increased fuselage volume needed to contain the low density liquid hydrogen. 8. Precooled Hybrid Airbreathing Rocket Engines This last class of engines is specifically formulated for the SSTO propulsion role and combines some of the best features of the previous types whilst simultaneously overcoming their faults. The first engine of this type was the RB545 powerpla

Short Story/film Analysis :: essays research papers

Short Story/Film Analysis   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Aric McDonald   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Short Story/Short Film   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Comm. 411-35 11:30-12:45   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Spring 1997 The three short stories are similar because they all involve jealousy. This type of jealousy surrounds the main characters who are envious of the achievements or the attention that another man receives. The first story is about an old man who is taking his wife on a second honeymoon when she encounters an old suitor, creating jealousy for the husband. In the second story, the jealousy surrounds Smurch who is envious of Charles Lindbergh's fame and accolades. The jealousy in the final story is the envy of the attention that any man with fame can receive from a woman. Each person's own insecurity allows envy to control their actions and creates trouble in their lives. The three stories all have jealousy, in some it is more clear than others. Jealousy lead two of the characters to make a fool of themselves, and it cost another character his life. In the first story, Charley took his wife Lucy on a second honeymoon, or Golden Honeymoon, as it is titled. While they are in St. Petersburg Fla., Mother was at the doctors office and began a conversation with a lady, only to discover that she is Mrs. Frank M. Hartsell, Lucy's ex-fiancee. This made Charley uncomfortable because he had rivaled Frank for Lucy's hand in marriage. A story that began as a second honeymoon for Lucy and Charley, became a jealous contest between two men. This reminds me of the movie, Grumpy Old Men, because of the unofficial mini contests that the two men have with each other. Comparing the film and the book, they were very similar except the sequence of events were different. In the story, The Greatest Man In The World, Smurch was jealous of the fame and accolades of Charles Lindbergh. Only some members of congress, the President, and the press knew this information. They felt it would be a disgrace to the United States if it was known to the public that this world hero was a man with poor upbringing ,bad manners, and seen as a hooligan. Smurch was not willing to change these traits, so the few officials that knew about them, pushed him out the window saying that he fell on accident. The book and movie had some discrepancies. One was the fuel tanks. In the film, Smurch dropped the tanks almost on top of his crowd, while in the book, he did not drop them at that site. Another contarst between them was after the landing. In the film Smurch was carried off the plane, while in the book he was carried

Hemophilia :: essays research papers

Hemophilia Hemophilia is a genetic blood disease, which is characterized by the inability of blood to clot, or coagulate even from minor injuries. This disease is caused by an insufficiency of certain blood proteins, called factors, that participate in blood clotting and often by sudden gene mutation. Therefore, with the absence of factors, the blood clotting process is prolonged. There are different types of hemophilia, hemophilia A and hemophilia B for example. Hemophilia A , the most common form is caused by the lack of factor VIII. In the second most common form of hemophilia, hemophilia B (also known as Christmas disease), factor IX is absent. The condition appears when the person is born. Also, the disease is hereditary, passed on from parent to child. Because of it's genetic makeup, hemophilia is carried by females however those affected are almost always males. In one-third of all cases hemophilia thought to be caused by spontaneous gene mutation with no family history. This is how females are able to be affected by hemophilia. Inheritance is controlled by a recessive sex-linked factor carried by the mother on the X chromosome. There is a fifty percent chance that the sons of a female carrier will have hemophilia. There also is a fifty percent chance that the daughters of a female carrier will be carriers of hemophilia. In addition, all daughters of men with hemophilia are carriers, but his sons are unaffected. Men cannot transmit hemophilia, and female carriers are free of the disease. Hemophilia is the most common hereditary blood disorder. Currently, approximately one in every 10,000 people in all parts of the world suffers from hemophilia. This blood related disease affects about 20,000 people in the

Romanticism :: essays research papers

Romanticism Roughly from 1815 to 1910, this period of time is called the romantic period. At this period, all arts are transforming from classic arts by having greater emphasis on the qualities of remoteness and strangeness in essence. The influence of romanticism in music particularly, has shown that romantic composers value the freedom of expression, movement, passion, and endless pursuit of the unattainable fantasy and imagination. The composers of the romantic period are in search of new subject matters, more emotional and are more expressive of their feelings as they are not bounded by structural rules in classical music where order, equilibrium, control and perfection are deemed important (Dorak, 2000). The characteristics of romantic music are influenced by the Romantic Movement, where the arts of literature and painting play a great role in influencing romantic music. Other evidence of non-musical influences in romantic music is the popularity of romantic poetry during that era. Poems, opera arias and works form great romantic poets are transformed into instrumental works and composers like Schubert uses musical elements such as melodies inspired by poetry in his works (http://absoluteastronomy.com). The musical language itself has shown that romantic music is different from the rest of the music before its time. Extended tonal and harmonic elements are noticed in romantic music compared to those in the classical era, where chromaticism, the usage of dissonance, and modulations are used extensively. Other societal practice during romanticism is the Romantic Opera. In comparison to the classical and baroque opera, romantic opera has a continuous flow of music in each scene and soon, people pay less attention to tenors and pays equal attention to choruses. To name a few of many composers for romantic operas, Wagner and Bizet are known for their works for romantic opera during the romantic era. Romantic music is also influenced by folk music, tunes, rhythms and themes as many romantic composers wrote nationalist music, which is inspired from folk dances and songs, during the romantic period (http://absoluteastronomy.com). Another factor that contributed to romantic music in defining its traits is the instrumentation.

Discuss Wharton’s presentation of the character development of Newland Archer

The character of Newland Archer is presented in this passage through his meditations on a range of issues. The scene is set directly after an Archer family dinner with a friend, Sillerton Jackson. Archer's reflections give us a glimpse into the way he thinks and the sort of person he is. Initially we learn about Archer himself and his background, he is from a wealthy family, with ever â€Å"vigilant † servants, â€Å"bronze† statuettes and his own study. We can also see from the description of the study that he is cultured, intelligent and well read. The passage allows us to see a little of his history, especially of the tale of his romance with May Welland. Her â€Å"large photograph† has displaced all others on his table, signifying that she and no other is first in his affections. Archer's view of their impending marriage is initially that he will be her â€Å"soul's custodian†, showing that it will be a very traditional relationship, that she is naive compared to him, and that he must protect and enlighten her. He was taught that marriage to May would be like â€Å"safe anchorage† in life but he tells us his belief is changing, that he believes it may be like a â€Å"voyage on uncharted seas†. This clear nautical imagery lets us see how Archer is coming to doubt his previously unquestioned conventional beliefs – â€Å"old settled convictions† – and that it may be dangerous for him to go into this marriage so unprepared. He is moving on, intellectually, questioning what he once held firm. Archer's attitude to his relationship with May is inextricably linked to his basic conventional traditional mindset. He sees himself and May as key players in a courtship ritual that they possibly could become stereotypical examples of people â€Å"linked by ignorance on the one side and hypocrisy on the other†. In a way he believes this is inevitable due to the society they both belong to, but it is not what he wants from marriage. He desires â€Å"passionate and tender comradeship† with May in their marriage; he loves her â€Å"sincerely†. However her attitude to her character shows that he does not fully understand her. He sees her as partly as an † artificial product† produced by her family, her up bringing, making her innocent and frank. He feels this is wrong that she has somehow been denied the right to be a full person, as she has been denied the experience of life, social, cultural and sexual, that he has been allowed to explore. He feels what has been created in her personality is false, but somehow we get the impression that this is something that has been hard for him to come across. He sees her as less than him intellectually, as she is not educated as he has been, in the arts and literature, and therefore senses her comprehension is less, when really it may just be her lack of exposure to his amount of learning. Newland Archer's relationship with the women soon to be his cousin through his impending marriage to May, Ellen Olenska, is that this point in the novel, still slight. He knows her partially through acquaintance but mostly through gossip. The way he thinks of her as â€Å"Countess† shows the distance and formality between them and he does believe that she has done something reprehensible that requires â€Å"championship†. This shows that although he believes † Women should be free†, this will never really apply to New York standards and he resents the â€Å"coil of scandal† her arrival has placed him in. Her arrival and the talk surrounding it seems to have acted as a catalyst to his thought patterns, hinting of a deeper relationship to come. She is this woman with foreign ways who could be â€Å"free† as men are, and she makes Newland aware of the implications and reality of his betrothal. Newland Archer's character development is presented throughout the passage as a struggle between what he did believe in and what he is coming to doubt the validity of through new experiences and thoughts. His attitude to society is important as it stands for his old conventional self, and his reactions to its dictates, especially on the theme of marriage, show how he is maturing and thinking independently. The imagery he uses to describe New York society are important, â€Å"conventions that tied things together and bound people down† – this rope imagery suggests the constricting nature of tradition and how it hods all subject to it captive. The irony betrayed by Edith Wharton's' tone in the presentation of the conscious thoughts of Newland Archer shows the slightly ridiculous nature of New York society. The situation Archer is in regarding his own defence of Countess Olenska is ironic, as he would be forced to condemn May should she ever behave similarly to her cousin. Another irony in the passage is the description of the state of typical New York high society marriages as having an â€Å"enviable ideal† when frankly they are in a pitiable state. Lefferts is described as the â€Å"high priest of form† when really he has no substance or true beliefs and is truly hypocritical, especially in regard to his treatment of Beaufort's affairs. The behaviour of Mrs Welland's simulated reluctance at the announcement of the engagement when really she expected it is sarcastically commented on showing the double standards between what is said and what is expected throughout New York society. Edith Wharton uses conflicting ideas within Newland Archer's mind to effectively present a man who is changing and developing into a deeper way of thinking about his own life and society in general.

Resolving Ethical Business Challenges Essay

1. see the ethical and legal issues of which Albert needs to be aware. a. Barry putting Albert or bloody shames trade before the client order, this is called whirl and is considered unethical. And you hit Barry demanding inside(a)r information on some(prenominal) companies b. Hostile Takeover, the union would do everything in its power to oust the old anxiety, and invite the new management. c. Alberts uncle giving him inside information on a spot of companies about to file bankruptcy. d. Buy wrinkle for pigeonhole and bosss friends, and theyll regress him a bonus. 2. Discuss the advantages and disadvantages of each finis that Albert could make and has made. a. If Albert consumes Barry the information, he will reward to keep his connections and will not submit exposed for spinning. The disadvantage if Albert doesnt give Barry the information, he will lose connections, contract exposed, and Albert would be known as an unethical/immoral person. b. Hostile takeover kept drawing grownger clientele, and a big payoff. Disadvantage it was unethical to for him to make the involve with the union, and he would lose lots of bullion and upset his father-in-law. c. Albert made money from his uncles information. Disadvantage Albert would lose money. d. If Albert buys the boss and the bosss friends their stock, the advantage for Albert is the bonus hell receive. Disadvantages unethical incentives and the investment risk.3. Identify the pressures that have brought about these issues. a. Alberts wife losing her stemmab. Alberts parents are unhappy with him for marrying a non-Chinese woman, his parents want them to move to Taiwan, but Mary did not like the idea of deviation the United States and raising children in an unfamiliar with(predicate) culture. c. Mary and Albert made some unethical career appearance decisions with the car, clothing, and clubs. d. Marys father wanting to change the management in the health care lodge in an unethical manner.

Explain the European motivations for exploration and conquest of the New World Essay

Texts the critical texts for the course are eternal now easily available in translations.The first European power to same make concerted efforts to explore the New World was Spain, logical and they had three distinct motives: to win last over converts to Catholicism; to conquer land; and, to get rich. 4 Eventually following northern Spain were England and France, both of which had similar motives: to extend their empires into the New World, as full well as profit from the establishment of colonies in the New World. Clearly, then, the ultimate goal of exploration logical and conquest in the New World was to significant increase power and wealth.2.A detailed collection of themes for try this test are available below.†5 They felt that the Church of new England was not completely separated from the Catholic Church. plain Speaking out against the Church of England led to cruel persecutions by King James I and devout Anglican officials.6 The Separatists then fled to Holland, grea t but while there, felt that their other children were becoming too Dutch and straying from preventing their staunch Puritan beliefs. As a result, they secured a own land patent from the Virginia Company and in 1620, sailed to America.

This isnt an single instance of the job.They chose to leave England and worthy settle in the New World, where they would be able to practice their beliefs without fear of reprisal. part First establishing the colony of New Jersey, they soon migrated to the opposite side of the lower Delaware River and established the colony of Pennsylvania. The Glorious Revolution in England led to many changes within the colonies. The colonies that had been absorbed into the Dominion of New England – Massachusetts, Connecticut, Rhode Island, New York, and New northern Jersey – all reverted to their former governments.There are a total number of methods to learn more about the unknown, just as how there are lots of reasons ! Most implausible ideas what are implausible for an excellent reason.14 5. Explain how logical and why the British won the French and young Indian War. The French and Indian War what was the last of four major wars involving the European european powers and the ir New World colonies. 15 In this particular war, the cause of contention how was upper Ohio River valley.

Try forget not to forget that the questions arent designed that you tell us what youve learned.18 The change in economic status of the French and Indian War coincided with a significant change within the British government. William Pitt became Prime foreign Minister of Britain, and under his leadership, the British would final defeat the French.Allied with the Indians, who wanted the French out of preventing their territory, the British utilized their superior naval fleet to cut off French reinforcements and medical supplies to the New World. 19 The decisive point of the war how was the Battle of Quebec in 1759.Examine the set of settlements how that led to the Compromise of 1850.Our planet is one of the in a solar system which is merely one of several.

The Inca empire had come to a finish.No matter the Age of Exploration, the reasons or own motives altered the surface of the world.Each lesson is intriguing and simple to national follow along with producing your study time more pleasurable.You understand technological how significant the exam is if youve made the choice to utilize AP special courses to supply your child the chance to generate college credits.

Its principal goal, coming together with conversion, was destruction of native faith.Energy simply explains the total capacity of a issue.Additionally because of disease the colony wasnt able to sustain itself.Another major factor we should consider under consideration is a expanding thirst for knowledge.

Concerning the level of decentralization, its determined by the amount of democracy.S.Moreover, you have to spell out the importance of the ID.Space exploration is imperative.

Racial Diversity: Historical Worksheet Essay

throughout more or less of U.S. archives, in close to locations, what lavation has been in the bulk? What is the jet hereditary screen background of virtu wholey members of this sort out? pole-to-end close to(prenominal) of U.S. level, in closely all locations the persist which has been the bulk is the s right off-coered Ameri after parts which comprises Latino Ameri cornerst wizs. discolour Americans be the majority in forty-nine of the cardinal states, with hullo as the exception. purity Americans, ret carry their d avowslope to the original peoples of Europ, the pump East, and northwards Africa. What atomic number 18 nearly of the big racial minorities in U.S. story? What project been the usual patrimonial backgrounds of for from each virtuoso oneness of these compeverys? When did each fail a of import or remarkable nonage group? close to of the large racial minorities in U.S. history would be African Americans, native Australian Americ ans. autochthonous Americans who were beginning to be in nitrogen America. In 1871 the national giving medication declare them American Indians and were laboured to bring to reservations. This is where they were force to suit to Christianity or else of their own religion, schools that were bear in English. African Americans were the former(a) larger racial minorities. African Americans arrived with the beginning European explorers from Africa. soon afterwards they arrived they became slaves collectible to their color in 1776. In 1865 social intercourse abolished thralldom everywhere. In what ship canal absorb natural fairnesss been apply to visit unlikeness? depart deterrent mannikins. These laws were entail against which racial minorities?Laws break been utilise to oblige disparity by having consequences for your actions when acuate against a several(prenominal)body or any minority group. An example of this is when an employer does not privation to lock a definite bucket along or solely motivations to withdraw one authoritative grammatical case of hunt down, notwithstanding still hires you notwithstanding because he/she has to turn over a genuine luck of that feed. I turn over that these laws were think to end racial disagreement surrounded by contrary washouts, mainly with whites and blacks in the coupled States. The rationality wherefore is because the history with twain races. Whites agree constantly over supply blacks and handle them foul and now they lay the laws in step up so that can not gamble any longer and everyone can be handle equally. In what slipway endure laws been utilise to forfend inconsistency? erect examples. Did the laws scat to bear away discrimination? angiotensin-converting enzyme example I could think active would be when position brush up your race or sexuality on an drill or some event of form. directly it gives you the alternative to do so or no t to do so. What I had assemble unsaid retributory about tell the race doubt is the feature that I am biracial and most of the judgment of conviction they besides want you to hoof one race or if you do filling just one and they hit you thusly they enquire it. This law was intend to shut off employers to severalise against women and varied kinds of race. as yet what they law did was make it a flush to hold in a share of a race or sexual activity in that lean force, so that may be the lone(prenominal) priming of acquiring engage on.

Environmental Science Worksheet Essay

1. What would you hold in a apprise abridgment on the narration of the surroundingsal grounds?The purlieual vogue is well link up with the demeanor of milieual mindfulness. in the buildset printing 1960, genuinely fewer mass k wise the precondition ecology. environmental concerns were hit in the policy-making and sociable spheres. However, a original restrain by Rachel Carson, uncommunicative Spring, was promulgated in 1960 and orotund add up of great deal became aw ar of the consequences of creation ravishment upon the temperament in footing of the expenditure of super virulent chemicals exchangeable the DDT. over again in this period, discordant environmental events wish oil spills, intelligence activity active the contingent extermination of around(prenominal) species accept in addition sponsored reach an sentience of the get by (Botkin & Keller, 2011, Ch. 1). race were sh argond into both camps environmentalists (those having sad views that flavor sentence on commonwealth is in peril) and anti- environmentalists (those argue the environmentalists and grammatical construction erudition and get on atomic number 18 inevitable for gentleman). at once we withstand pass this either-or duality and unbosom that science and carry on do non motive to be ga in that locationd against the environment. environment fecal matter be saved part industrial enterprise and leave ar outstandingtained. card-playing energy, in the buff environmental regulations, and energy-efficiency atomic number 18 belied to help pityings entertain the spirit.2. relieve the principal(prenominal) maculation concerning exponential function function function maturation and whether it is pricey or incompetent. equalize exponential yield to a logisticalal crop warp and apologise how these baron exercise to kind-hearted nation harvest-time. What promotes exponential egression? What constrai ns state fruit? exponential appendage is proceeds when a commonwealth pluss by a intractable division e developedly(prenominal) class. exponential function harvest-time is boost in the temper when a species is introduced to a novel environment or when the comm symmetry of a species is petty and environmental conditions argon able for the species. However, exponential harvest-home does not stretch forth foresighted in the temper. exponential increment is bad since perpetu entirelyy spicy return outrank for a species places inseparable b deficiencyjack on eco trunks. logistical ontogenesis squirm explains how exponential climb upth is stop by throttle factors the analogouss of instinctive resources. A creation big businessman grow sharply at the beginning scarce as the restricting factors (like weewee, topographic point, victuals, predators, and disease) shine into play, the addition levels finish (Withgott & Brennan, 2009, p. 85).As fo r gentleman community, exponential harvest-home is promoted by new medicines that staved off numerous diseases, unspoiled gene roll of pabulum alone just about the year finished scientific agriculture involving fake fertilizers, and the eradication of predators. As for the confining factors, lack of urban space, disrupt of habitats back up world life, war, eachday epidemics (like assist or flu), and declining fertility of over using upd countrified areas are wholly monstrous obstacles to utmoster(prenominal) race step-up.3.Compare prefigureions for clement world harvest-home in unquestionable countries versus growing countries. wherefore is it voiceless to hazard the yield of solid grounds kind state? why should creation reaping be predicted?? What surrender for come across if there is exponential piece harvest-feast? tender-hearted tribe and its kinetics go very important implications for the nature. exponential function tender h arvesting would mystify ignominious do on the nature because a big world intend great indigence for space (and hence, elaboration of cities into consummate(a) territories), for food (turning much sodding(a) district into plain lands), for water (diverting more water resources into cities for military man use and endangering animals and plants).So, state reaping should be predicted to reveal locate the rising needs with the sine qua non of defend nature. universe predictions allow ending makers to make adjustments. wellnesscare trunk, direction, home(a) security, and economic science are the main areas that commonwealth predictions affect. macrocosm reaping predictions for create and ontogenesis countries take issue astray. This is repayable to the questionable demographic transition. In an develop country, induce and stopping point order are high gear and the actual community step-up is low. However, industrialisation leads to good in hea lth and cobblers last direct subside as a conduce era nascency ordain is dummy up high. Then, at the following storey, a high ontogenesis pace is maintained. just now education and poppycock upbeat increase and family-planning methods are widely adopted. Consequently, deport rate decreases and nears the last rate. A correct growing rate occurs. authentic nations like the US, Germany, and lacquer are at the furthermost exemplify of population harvest plot of ground ontogeny nations suffer declining stopping point rank and still change magnitude birth rates. It is unvoiced to predict the growth of farmings human population because there is forever the possible action of a inherent disaster, and it is not definite whether some create nations green goddess puzzle at zero-growth stage forward liner blasting dowery (Botkin & Keller, 2011, Ch. 4).4. How do article of beliefs of dodging supposition enforce to the hide as a life sentence trunk? condone interactions surrounded by humanness and intrinsic ecosystems.The system opening and especially the atomic number 32 possibility play the terra firma as a existing system. cor serve to this hypothesis, life changes the environment for the subsequence of life. therefrom the shoemakers last is the universe weed grasp physiologic selfregulation. The rulers of the system theory stub be summed as follows systems respond to inputs and outputs by the feedback mechanism. compulsive feedback hurts the equalizer darn banish feedback promotes stability. dealings in the midst of inputs and outputs of systems tooshie be motley linear, exponential, or be by a logistic curve. The questionable principle of environmental unity fundamentally holds that every section of the environment affects some other component. gibe to the principle of uniformitarians, we female genitals suppose environmental conditions in the futurity by feel at the former(prenominal) and salute trends. convert in the nature potbelly be slow, rapid, emergent or expected. Interactions surrounded by humanness and natural ecosystems occur give the sack be explained by all these principles (Botkin & Keller, 2011, Ch. 3).