Comparison And Contrast Between Nuclear And Solar Energy Engineering Essay

Comparison And Contrast Between Nuclear And Solar Energy Engineering Essay Human beings have been using fossil fuels for hundreds of years, satisfying the demand of industrialization. The behavior of using fossil fuels, on the other hand, causes huge pollution, such as soil, water and atmosphere contamination. In addition, fossil fuels, such as solid, liquid and gas, are all facing on the exhaustion. It is evidential that the situations need to be checked or repressed. However, the solutions should satisfy the urgent requirement of energy as well. Nuclear and solar energy are two clean, practicable solutions for human beings. Because they have been tested and been put to use since the mid twentieth century. On the surface, nuclear and solar energy seem absolutely different in other aspects except for low direct pollution and practicability. In fact, they share some significant similarities while they are totally different in other aspects. This essay will concentrate on comparing and contrasting nuclear and solar energy by discussing the similarities in gas emissions, high expend in increasing efficiency and electricity price, and the differences in safety and equipments. There are numerous similarities between nuclear and solar energy. The most significant one is that they are pollution-free and have no direct emission of carbon dioxide or other greenhouse gases. Both nuclear and solar energy will give a carbon dioxide saving of 1330kg for 1kw electric power per year (Bosshard, 2006). Even though they lead to indirect emission of gases, the quantity of pollutant is small and unavoidable. However, at the price of low emission, the improvement of efficiency is expensive and difficult for both. In other words, they require high expenses in material and maintenance, especially when increasing the electricity production. Furthermore, according to Bosshard (2006) and Murray (2000), low efficiency is a traditional challenge for nuclear energy to conquer as it is in the solar energy field. Nuclear plant has efficiency about 7% in collecting radioactive energy to drive dynamotors. Merely 30-40% energy can be converted into electricity power by dynamotors. Likewise, neither silicon solar cell nor compound solar cell has an average efficiency which is over 16% (Edmonds, 2007). Even thought both nuclear and solar energy have plans for increase of efficiencyà ¢Ãƒ ¢Ã¢â‚¬Å¡Ã‚ ¬fusion for nuclear energy and Thin Film Poly for solar energyà ¢Ãƒ ¢Ã¢â‚¬Å¡Ã‚ ¬that will make a great improvement in efficiency, these techniques will not be conquer and put into application within a decade . Another common point that these two kinds of energy share together is the price of electricity. According to Thamm (2007), the price for solar energy is $0.35-$0.6 per kWh for solar cell and $0.085-$0.135 per kWh for solar thermal, while Fell (2006) claimed that the nuclear electricity price was from $0.3/kWh to $0.6/kWh; whereas, comparing to fossil fuels energy, which is merely 0.04 dollar per kilowatt-hour; hence, the expensive costs these two energies need will influence the competitive ability of worldwide market obviously. In spite of the similarities, safety is the main problem. It caused the differences of worldwide application in fund input and popularity between nuclear and solar energy. According to Duncan (2002), radioactive materials are regarded as the most basic sources for nuclear plant, which is extremely deadly pollutant. Therefore, as a solution, it will be stored in deeply in the earth with high-end and mature technology. Nuclear energy becomes one of the luxury goods for some wealthy countries. In contrast, solar energy application is much safer, such as solar cell, it can not only be built in solar station but also be applied in every aspect of daily life in both developed and developing countries. For instance, it supplies energy to homes or even playthings. Furthermore, the two famous nuclear accidents, The Three Mile Island in 1979 and The Chernobyl in 1986, are regarded as the another main evident reason for environmentalists to refuse nuclear power and for many counties to prefer p utting more fund into other clean energy like solar energy. There are three differences of the equipment applied to generate electricity for these two kinds of energy. The main difference involves the principle of operation of energy transformation. In this area, solar energy is more direct. Gonyeau (2003) stated that nuclear plant applied some special substance to absorb the radioactive energy from radioactive material in order to convert the energy into the heat of vapor, which would drive the thermoelectric generator to produce electricity. Moreover, heavy water, which is so difficult to produce that its value is higher than gold, is requite as Refrigerant. In contrast, Solar equipments prefer to generate electricity more directly by collecting photon energy and transforming it into potential energy in the cell or just gather the heat of light with water or parabolic dish collector (Corporation, 2008). As result, solar energy is more convenient than nuclear energy. Not only the ways of energy transformation are distinct, protection problem is also regarded as the area where difference exists. Nuclear plant needs frequent examination and to be well protected, because every little mistake will deal to the over heated of the reactor which is likely to cause the disaster that beyond retrieve. However, solar equipments are more easy to be controlled and do not requite as much care as nuclear plant does. The last point of difference is in energy gathering. It is obviously that nuclear plant can generate hundreds of times electricity than solar equipments (Edmonds, 2007). In addiction, difficulty in gathering energy is regarded as the disadvantage of solar energy, while the nuclear plant is good at this work. From what has been discussed above, it is easy to identify that solar energy is more promising than nuclear energy for its pollution-free production, safety, and convenience. Also, while nuclear energy, especially the fusion reaction that will be applied in future, is much danger and shouldering the pressure of nuclear proliferation, solar energy has wider and wider application in all aspects in society. Moreover, solar energy is one of the energies which are almost infinity for humankinds, because it can be found even outside the solar system; while nuclear energy is suffering the shortage of source. In brief, solar energy will develop well and become far more popular than now. In conclusion, by comparing and contrasting these two kinds of energy, it is clear that nuclear and solar energy share the common point of low greenhouse gas emissions and high cost of electricity. However, they still differ in many areas such as safety and principle of operation of devices. It is evidently that the application of nuclear and solar energy will grow in the future; while solar energy is more promising. Although there are several difficulties for both nuclear and solar energy to conquer, great progresses will be made. Consequently, they will serve Human beings and satisfy the increasing demand of consuming energy. ReferenceÃÆ' ¯Ã‚ ¼Ãƒâ€¦Ã‚ ¡ Corporation, P .W (2008). Solar Energy. available at: http://www.window.state.tx.us/specialrpt/energy/pdf/10-SolarEnergy.pdf (Accessed date 09/03/2010) Duncan, T (2000). Advanced Physics. 4th Edition, London: Murray Publishers Ltd. Edmonds, JA (2007). Nuclear Energy. available at: http://www.nuclear.gov/pdfFiles/History.pdf (Accessed date 08/03/2010) Bosshard, P (2006). An Assessment of Solar Energy Conversion Technologies and Research Opportunities. Available at: http://gcep.stanford.edu/pdfs/assessments/solar_assessment.pdf (Accessed date 07/03/2010) Gonyeau, J (2003). Nuclear Energy. available at: http://www.pnl.gov/gtsp/docs/getspnuclear.pdf (Accessed date 08/03/2010) Fell, H. J. (2006). Uranium Resources and Nuclear Energy. available at: http://www.lbst.de/publications/studies__e/2006/EWG-paper_1-06_Uranium-Resources-Nuclear-Energy_03DEC2006.pdf (Accessed date 09/03/2010) Murray, R. L (2000). Nuclear Energy available at: http://www.thevespiary.org/LYC/Chemistry/Nuclear%20chemistry/Nuclear%20Energy,%20An%20Introduction%20to%20the%20concept.pdf (Accessed date 11/03/2010 Thamm, A. L (2007). A Strategic Research Agenda for Photovoltaic Solar Energy Technology. available at: http://www.eupvplatform.org/fileadmin/Documents/PVPT_SRA_Complete_070604.pdf (Accessed date 07/03/2010)

Inuit Culture over Time Essay example -- canada, canadian

The Inuit people of Nunavik in Quebec province in Canada had lived in the harsh environment of the arctic for thousands of years with little contact from the outside world, but the Europeans have changed that, and the Inuit people have had to adapt to contact with other cultures and new technology. In the beginning of the Inuit Culture, the people had to be extremely resourceful in order to help the cope with the harsh environment of the Arctic, but when the Europeans arrived they made environmental changes and they also forced cultural changes upon the Inuit people. Now the Inuit people of Canada are forming their own governmental system which will allow them to protect and gain wealth from their own resources. The geographic features of Nunavik hugely influence how the Inuit people obtain food and shelter because it is such a harsh environment. As modern technologies became more prevalent, traditional methods of surviving were forgotten for many reasons. Pita Aatami, the pres ident of the Makavik Corporation, is a tribal leader who, along with other tribal leaders, has a vision of incorporating modern technologies with traditional values. The Inuit people of Nunavik had a very distinct culture before the Europeans arrived. The modes of transportation consisted of dog sleds, and kayaks made of skin and bone. Because of the cold climate, they ate animals from the ocean and rivers such as Beluga Whales, seals, and fish. In the summer, they found berries to eat. There are no trees in the arctic, so they used other resources to build shelter. They lived mostly in igloos, made of ice blocks and sealed by pouring water over them and letting it freeze. They also built sheds and other buildings out of whale bones and various animal... ...e Canadian government for the Nunavik Corporation’s plan for a Nunavik Regional Government. She first had the idea for the self government when she was vice-president of the Nunavik Corporation. She is now a board member on the Board of Nasavvik (an Inuit Health and Changing Environment agency) and is also on the Circumpolar Inuit Health Steering Committee. She has been working on Nunavik self government since 2002. The Inuit people of Nunavik have used their incredible resourcefulness to survive in the harsh environment of the Tundra and have a rich culture, but with the arrival of European technology, government and environmental destruction, their way of life has been threatened and much of their old culture has been lost. They are working to preserve their culture by passing it through education, and negotiating for more control so that they can do that.

Aviation Essay

I am an individual wanting much more than just the usual learning that is taken from lower-level of education. My wanting for excellence has made it possible for me to want something more from myself. Undeniably, the different assessments that I have made upon myself as an individual has made me more interested in the progress that I could still make e a much better individual in the field that I am involved with a present. As a professional involved in the industry of aviation, I aim for better instructions that could assist me in becoming a better manager of the staff in my chosen field. Aviation, compared to other types of transportation is a serious industry that involves much more systematic approach in management and organization. For this reason, I know that simply meaning to know what management is is not enough for this section of the learning. Being in the industry of aviation is a serious task to consider. This is the reason why further learning has been my option which I know would equip me with the needed knowledge that I ought to use in my profession later on. Through the said learning that I am expecting to receive from the institution, I do expect to have a larger scope and possibilities of employment later on. I do believe that with better knowledge on the field that I am specializing at, I am sure to receive more competent skills that would help me in acquiring the right level of employment that I deserve. The ways by which I would be applying what I learn is the primary key in increasing the possibilities of employment that I am to face in the future.

Moral values

It would be gross injustice to categorize all children and youths as lacking in manners and morals, but the general trend would certainly suggest there has been a major decline among many of them. Family values have changed dramatically in the past few decades, producing a crop of undisciplined teenagers and children who lack morals and manners as a result of poor training. Good manners were once the norm with young people very much aware the older generation.Saying â€Å"please† and â€Å"thank ou†, giving up a seat on the bus and holding open doors were all considered normal mannerly behavior. Times have changed and we now live in a predominantly me-first society which is reflected in many young people. If good manners are taught at an early age, they will generally continue to be part of the personality of the young child all the way into adulthood. The lack of good manners observed in society in general is no doubt a reflection of the situation found within the home .Without parental xample and training the area of manners, it is likely the children will sadly lack in displaying them. The same can be said of the lack of morals we find in many of today's youth. A large proportion of children have grown up with little or no respect for authority, for property, for family or even themselves. Living a life of immorality is considered normal behavior today and has produced a bumper crop of young people with venereal disease, unwanted pregnancies and a feeling of emptiness in their ives.Lacking in moral stability, we find young people involved in crime, violence and drug abuse. The so-called freedom they have has actually brought them into slavery to an amoral lifestyle. There is a contrast though in many children and teenagers who are moral and do have good manners, proving that it is still possible to develop these delightful characteristics. It is a real pleasure to come across young people who are mannerly and who have the courage to lead a moral life, not†¦ Moral values It would be gross injustice to categorize all children and youths as lacking in manners and morals, but the general trend would certainly suggest there has been a major decline among many of them. Family values have changed dramatically in the past few decades, producing a crop of undisciplined teenagers and children who lack morals and manners as a result of poor training. Good manners were once the norm with young people very much aware the older generation.Saying â€Å"please† and â€Å"thank ou†, giving up a seat on the bus and holding open doors were all considered normal mannerly behavior. Times have changed and we now live in a predominantly me-first society which is reflected in many young people. If good manners are taught at an early age, they will generally continue to be part of the personality of the young child all the way into adulthood. The lack of good manners observed in society in general is no doubt a reflection of the situation found within the home .Without parental xample and training the area of manners, it is likely the children will sadly lack in displaying them. The same can be said of the lack of morals we find in many of today's youth. A large proportion of children have grown up with little or no respect for authority, for property, for family or even themselves. Living a life of immorality is considered normal behavior today and has produced a bumper crop of young people with venereal disease, unwanted pregnancies and a feeling of emptiness in their ives.Lacking in moral stability, we find young people involved in crime, violence and drug abuse. The so-called freedom they have has actually brought them into slavery to an amoral lifestyle. There is a contrast though in many children and teenagers who are moral and do have good manners, proving that it is still possible to develop these delightful characteristics. It is a real pleasure to come across young people who are mannerly and who have the courage to lead a moral life, not†¦

Propp Theory and Casablanca essays

Propp Theory and Casablanca essays Propp and His Analysis about the Fairy Tales Vladimir Propp is a formalist who developed an analysis for stories to find whether they are fairy tales or not. In order to obtain this theory he studied the narrative of folk tales and observed that they have similar characters and struggles. Because of these, in his theory, Propp says that all fairy tales must share some basic elements, which he called funtions and to be a fairy tale, a story must contain all of these and also they must be used orderly. At the same time, he says that there are seven roles in a fairy story and he describes them not with peoples name but with their duties in the fairy tale. In this situation, some people can still say that Michael Curtizs romantic melodram Casablanca which is about two men, a woman and their love triangle and how peoples lives were changed and ruined by Nazis in the duration of World War II, is a fairy tale and some of them say it cannot be a fairy tale. In this essay what I will clarify is that Casablanca is not a fairy tale according to Propp and his theory by making character analysis and examining where the function are used or not used. First to understand whether Casablanca is a fairy tale or not the characters should be analysed and should be tried to fit with the characters in Propps theory. One of the important characters in the Casablanca is Richard Blaine, generally called Rick in the film, who is the hero of the film according to Propps theory. The events that are told in the film are generally about him. He falls in love with Ilsa who is the wife of Victor Laszlo, one of the legendary heroes of French resistance against Nazis, and is said that her husband was killed in the concentration camp. Ilsa is the princess of the film. The helper in the film is the chief of French policeman Louis Renault in Casablanca. During the film although he seems he is not a reliable man, at the end of th...

The Stanford Prison Experiment Essay Example | Topics and Well Written Essays - 750 words

The Stanford Prison Experiment - Essay Example Such a trend was mostly observed during the post war era, where researchers displayed a keen interest in deciphering human behaviour associated with the two traits mentioned above and understands the psychology of people who showed increased levels of conformity and obedience to their authorities. Such an observation was primarily based on the Nazi concentration camps and the likes, where despite the immorality of the acts, people were seen to be submissive and obeying the orders given to them (Kassin, Fein, Markus, 2010; Smith, Mackie, 2000; Fiske, 2009). Zimbardo’s Stanford Prison experiment: This experiment was conducted to study the psychological impact of prison life on the prisoners. As a part of this experiment, regular students were selected to perform the roles of prison guards and prisoners and were made to go through the exact same routines, as is usually observed in prisons. Newspaper advertisements were formally given out to invite ‘participants’ to p articipate in the experiment, and those who responded were ‘arrested’ without a prior warning and made to go through a thorough physical examination, similar to one carried out on real criminals. Such sudden and unexpected ‘arrests’ of the regular college going students, took them by surprise and the students were reported to experience mild shock, and humiliation due to the whole exercise (prisonexp.org, 2011). The experiment was deliberately designed to imitate the scenes from real prisons and steps were taken to disgrace the prisoners, thus resulting in a series of negative social, emotional, and psychological repercussions. The study, unlike other experiments followed all the major ethical considerations, and did not involve any kind of deception or tricks, it received widespread criticism for the unethical nature of the study. This was mainly because of reports of the participants being made to go through extreme social, psychological and emotional tur moil and the fact that they were deliberately exposed to situations involving high amount of stress. The proponents have argued that the experiment conducted were ethical in nature, since the participants were clearly informed about the type of study they have enrolled in. However, the opponents and critics have stated that the information provided to the participants was incomplete in nature, as their consent was taken based on insufficient data. The participants of this study were arrested without a prior warning or information which was least expected leading to stress and emotional turmoil (Shaugnessy et al., 2006). There were widespread criticisms regarding the authenticity and validity of the experiments conducted, especially with regard to the manner in which the study was replicated. It was argued that there is no way to replicate a real prison and hence highly impossible to extract similar reactions from ordinary individuals, since there is a vast amount of difference betwe en regular college going students and hardened criminals. Over and above the questions regarding the plausibility of the study, there were serious concerns regarding the credibility of the study as well, since critics argued that the study was highly generalized in nature and the observations could easily have been made by observing / studying the prisoners from Nazi concentration camps. Also, the study aimed to completely imitate the behaviour of prisoners from popular prison scenes and hence there was a

Discussion questions Coursework Example | Topics and Well Written Essays - 250 words - 2

Discussion questions - Coursework Example Developing accurate expectations about the position to be occupied by aspiring employees is vital since it saves both individual and the company considerable time and resources. Inflated job expectations always results in new employees quitting the jobs after short stints (Schmitt, 2012). A Realistic Job Preview (RJP) is a recruitment approach employed by an organization in view of communicating vital aspects of the roles prior to offer of a job. This approach protects the merit system, enhances employee commitment and reduces turnover. Moreover, RJP provides the potential employee with a clear picture of what to expect as regards to the job (Schmitt, 2012). The elements of an effective recruitment action plan comprises of time horizons of recruitment activities. It also stipulates the approach of classifying applicant pool targets while also identifying the most appropriate techniques of contacting the targeted