A.D. Hope Australia essays

A.D. Hope Australia essays Alec Derwent was one of Australias greatest poets, who touched the lives of many throughout the world. Within the 7 stanzas of Australia, A.D hope gives us a very negative one-sided approach to the poem. His poetry explores the spiritual poverty of our land. He insinuates that it takes so much to survive which has prevented Australians from reflecting upon their journey through life. A.D hope is looking down on Australia and our way of life. The sombre images of a nation of trees, drab green and desolate grey indicate that Australia is a monotonous and dreary place. Each stanza consists of four lines with the rhyme scheme being ABBA. Little enjambment exists in the poem; most of the stanzas stand alone as paragraphed. ..drab green and desolate grey Her rivers of water down among inland sands Floods her monotonous tribes from Cairns to Perth. A.D Hope uses imagery as a means to convey meaning to the poem. The dark colours portray the insipidness of the landscape. Monotonous tribes refer to the fact that there is no individualism throughout Australia everyone looks and thinks the same. The alliteration helps to once again convey an image drab green and desolate grey. She is the last of lands, the emptiest.. A. D Hope uses this metaphor to give the concrete reality that Australia does have human qualities an abstract idea. The tone is mocking Australian culture, our history, our land and they way we live our life. A.D Hope gives Australia human qualities he refers to the land as a women they call her a young country. Australia is Hope's criticism of general Australian society and the country itself. a women beyond her change in life, a breast still tender but within the womb is dry Refers to the fact that Australia is empty the inability to bear children, being infertile a change of lif...

Megalopolis From Boston to Washington

Megalopolis From Boston to Washington French geographer Jean Gottmann (1915-1994) studied the northeastern United States during the 1950s and published a book in 1961 that described the region as a vast metropolitan area over 500 miles long stretching from Boston in the north to Washington, D.C. in the south. This area (and the title of Gottmanns book) is Megalopolis. The term Megalopolis is derived from Greek and means very large city. A group of Ancient Greeks actually planned to construct a huge city on the Peloponnese Peninsula. Their plan didnt work out but the small city of Megalopolis was constructed and exists to this day. BosWash Gottmanns Megalopolis (sometimes referred to as BosWash for the northern and southern tips of the area) is a very large functional urban region that provides the whole of America with so many essential services, of the sort a community used to obtain in its downtown section, that it may well deserve the nickname of Main Street of the nation. (Gottmann, 8) The Megalopolitan area of BosWash is a governmental center, banking center, media center, academic center, and until recently, the biggest immigration center (a position usurped by Los Angeles in recent years). Acknowledging that while, a good deal of the land in the twilight areas between the cities remains green, either still farmed or wooded, matters little to the continuity of Megalopolis, (Gottmann, 42) Gottmann expressed that it was the economic activity and the transportation, commuting, and communication linkages within Megalopolis that mattered most. Megalopolis has actually been developing over hundreds of years. It initially began as the colonial settlements on the Atlantic seaboard coalesced into villages, cities, and urban areas. Communication between Boston and Washington and the cities in between has always been extensive and transportation routes within Megalopolis are dense and have been in existence for several centuries. Census Data When Gottmann researched Megalopolis in the 1950s, he utilized U.S. Census data from the 1950 Census. The 1950 Census defined many Metropolitan Statistical Areas (MSAs) in Megalopolis and, in fact, MSAs formed an unbroken entity from southern New Hampshire to northern Virginia. Since the 1950 Census, the Census Bureaus designation of individual counties as metropolitan has expanded as has the population of the region. In 1950, Megalopolis had a population of 32 million, today the metropolitan area includes more than 44 million people, approximately 16% of the entire U.S. population. Four of the seven largest CMSAs (Consolidated Metropolitan Statistical Areas) in the U.S. are part of Megalopolis and are responsible for over 38 million of Megalopolis population (the four are New York-Northern New Jersey-Long Island, Washington-Baltimore, Philadelphia-Wilmington-Atlantic City, and Boston-Worcester-Lawrence). Gottmann was optimistic about the fate of Megalopolis and felt that it could work well, not only as a vast urban area but also as the distinct cities and communities that were parts of the whole. Gottmann recommended that We must abandon the idea of the city as a tightly settled and organized unit in which people, activities, and riches are crowded into a very small area clearly separated from its nonurban surroundings. Every city in this region spreads out far and wide around its original nucleus; it grows amidst an irregularly colloidal mixture of rural and suburban landscapes; it melts on broad fronts with other mixtures, of somewhat similar though different texture, belonging to the suburban neighborhoods of other cities. (Gottmann, 5) And There's More! Furthermore, Gottmann also introduced two developing Megalopoli in the United States - from Chicago and the Great Lakes to Pittsburgh and the Ohio River (ChiPitts) and the California coast from the San Francisco Bay area to San Diego (SanSan). Many urban geographers have studied the concept of Megalopolis in the United States and have applied it internationally. The Tokyo-Nagoya-Osaka Megalopolis in an excellent example of urban coalescence in Japan. The term Megalopolis has even come to define something much more broadly found than just the northeastern United States. The Oxford Dictionary of Geography defines the term as any many-centered, multi-city, urban area of more than 10 million inhabitants, generally dominated by low-density settlement and complex networks of economic specialization. Source: Gottmann, Jean. Megalopolis: The Urbanized Northeastern Seaboard of the United States. New York: The Twentieth Century Fund, 1961.

America's Involvement in World War Two and How it helped contribute to Research Paper

America's Involvement in World War Two and How it helped contribute to America becoming a Super Power - Research Paper Example America was not directly involved in the war in the early stages. The necessity increased after the fall of France, the Pearl Harbor incident but mainly when Hitler declared war on U.S. This led to America’s direct involvement in the World War II and helped America to transition from a great power to a super power. World war II started by the deep seated anger in German due to the loss in World War I. Hitler a new leader in Germany transformed it from a defeated state to powerful one with a large army of up to 400,000 men which led to the breaking of the treaty of Versailles (Langley). March 16th 1935 Hitler tore up the treaty of Versailles when he started to build up his army (Hills & Barber 10) .Although U.S.A had always been an ally in the Second World War its direct involvement did not came after much later. In 1939 its only involvement was to provide arms and ammunition in turn of cash from countries. America was indirectly helping the allies by starving Japan of oil. Winston Churchill repeatedly tried to convince Franklin D. Roosevelt to enter the war but it was after Hitler’s declaration of war, the attack by Japanese on USA naval base in Pearl Harbor, America got directly involved in the war. ... This attack led to allies invading Italian mainland leading to the capture of Rome. The United States along with other allies continued to attack the Axis powers which led to the retake of Paris in the D-Day Invasion (Hills & Barber 17, 25). In the Tokyo Bombing Raids American bombers destroyed up to 250,000 buildings and killed 83,000 in massive fire bombing. It continued to play an important part in the attacks on the Axis Powers, till the end of the war where it dropped two atomic bombs in Japan bringing the war to an end. These included the two nuclear bombing the world had ever seen one being in Hiroshima and the other in Nagasaki. Both bombings left the city with massive destruction with large number of causalities breaking the strength of Japan totally and only six days after the bombing of Nagasaki Japan surrendered. It is clearly seen by the events of the war that although America was not involved directly at first in the war it played a pivotal role once it became directly involved and it’s most important role was that of bringing the war to an end by destroying one of the main Axis powers, Japan, completely (Langley 56). It is often wondered how U.S.A reached its position of dominance in the world. And it would not be wrong to link its rise a super power to the results and events of World War II. The characteristics of super power are firstly having a strong stable economy, secondly overpowering military, thirdly immense international political power and lastly strong national ideology. Before the war America was seen as a great power along with many other powerful strong nations like Russia and Britain. It was only after the war that U.S.A emerged as a strong super power and still holds that position. Even in years

How Do Privacy Rights Extend To Sexual Orientation Essay

How Do Privacy Rights Extend To Sexual Orientation - Essay Example The different laws that have been enacted in the United States of America and the roles that have been played by the Supreme Court and the political parties have to be taken into account when one is analyzing the reasons for the marginalization of the homosexual community and the reluctance that society has had in opening up to this community. In certain cases, the Supreme Court has refused to accord the same status to homosexual couples as heterosexual couples (Government by the People). This automatically assigns to these couples lower status that would induce them to conceal their sexual orientation a secret. In a lot of cases, people fail to recognize their own orientations because of the social stigma that is caused by judgments that place them on a lower level than their ‘straight’ counterparts. In these cases, there is a covert intrusion into the lives of these people that the state effects. While invading the privacy of these groups by marking locations where the ir sexuality can be expressed in terms of the very geographical boundaries within which people of a certain sexual orientation are allowed to make their sexual choices (the rights that homosexual couples have varies from one state to the other), the state also drags their problems into the public domain, thus making them face the stigma of a homophobic society. There are also cases when individuals of a homosexual orientation are not allowed to participate in certain associations which consist of only members of their own sex (Government by the People). This limits the choices that people of this community have and makes them make decisions that affect their privacy greatly.

Genetically modified organism Essay Example for Free

Genetically modified organism Essay In 1994, the first genetically modified food was tested and sold out into the market. Since then, over 35 countries and establishments from all around the world have started producing genetically modified foods. Genetically modified foods should be permitted because of it’s health benefits and advantages to the economy. Genetically modified foods, also known as engineered foods and biotech foods, are foods whose DNA has been modified in ways that do not naturally occur. Scientists tweak the DNA of the food by collaborating it with genes from a different organism, which gives the manufacturer all control over the plants genetic structure. Most of the genetically modified foods are from plants such as potatoes, corn, rice and even salmon. Animal feed, is also made up of crops such as soybeans, which are almost all genetically modified, meaning the food we eat from animals such as cows and chickens, are all being fed genetically modified foods, which then passes down to the meat they produce. There are a variety of reasons to why people have started genetically modifying food. To begin, it can enhance the taste of food; it increases the nutrients and also prevents pesticides and diseases. It is also a beneficial factor for the producers and the consumers as they can both save money since genetically modified foods are cheaper and most importantly since they last longer, making this an economic benefit. Although all the benefits it provides, a lot of harm comes with it. The way GM foods are engineered, is by taking a gene out of one organism and placing it into another, which disturbs the plants natural DNA. This factor kills off normal cells and provides the plant with the chemicals that scientist have injected into the plants for them to be able to last longer. Lastly, this action introduces allergens and toxins to food. The only ones to benefit from GM foods are multinational biotech companies and GM food consumers. To begin, it is economically beneficial for biotech companies because they are able to grow more crops that would last longer than a naturally grown crop. An example of this would be a potato. A naturally grown potato could last up to 3 weeks without being destroyed, in comparison to the genetically modified potato, which could last up to 7 weeks without being destroyed. Meaning this could benefit both the producers and the consumers because the fruits and vegetables that are being modified have longer shelf lives making the consumer save money and benefit from the bought products. Following its long life ability, genetically modified foods improve the availability of food for the world. As it lasts longer and cost cheaper than organic products, it improves the availability of food for the world by only producing so much at a time. Instead of producing 5 organic potatoes that will die off in 3 weeks, genetically modified potatoes are grown and will last 7 weeks, making us save potato seeds, which save more food for later increasing the worlds food supply. As GM foods are increasing the world’s food supply, they also provide an additional amount of nutrients chemically made. Genetically modified foods are modified to have more nutrients in it than the original food would have. Golden Rice, for example, is claimed to be â€Å"fortified† with vitamin A, which is an essential vitamin for the human body, which is provided by GM Golden Rice. There have been a great number of studies tracking the effects of GMOs on animals. Overwhelmingly, these studies indicate that GMOs are safe to consume. Impact on farming, GMOs allows plants to be modified to grow in environments that would be normally inhospitable. Cheaper food means, easier farming means more food, which, in turn, means less expensive food. This is not only beneficial for the average consumer, but it can have global implications: less expensive food makes it easier to feed hungry populations around the world. Increased nutritional value GMOs can be modified to have greater nutritional value than the organism would have naturally. For example, scientists, hoping to eliminate the need for post-harvest processing, have genetically modified rice to contain significantly higher amounts of vitamin A. This â€Å"golden rice† is not yet legal in most countries, but experts expect it to be within the next few years. All the Yes points 1. Genetically modified foods fill original food with chemicals. 2. Genetically Modified Food can cause cancer. 3. Genetically modified foods greatly affect our long-term health and well-being. 4. Genetically Modified foods All the No points Genetically modified foods can help solve the food crisis.

Sense and Sensibility Essay -- essays research papers

Title   Ã‚  Ã‚  Ã‚  Ã‚  Ã¢â‚¬Å"I have not wanted syllables where actions have spoken so plainly.† (Austen 68) As Elinor declares in Jane Austin’s novel Sense and Sensibility, it is true; actions do speak louder than words. What someone does means a lot more than what someone says. Someone can tell you that they love you, but if they never show you than how will you know if they truly mean it. Love is meant for people like Elinor and Edward who showed each other their love and respected social conventions. However, people like Marianne and Willoughby are not very deserving, due to their lust-based relationship and choices to ignore the common rules of society. Love is achieved through obstacles and not pure lust, and is only meant for people who truly deserve each other.   Ã‚  Ã‚  Ã‚  Ã‚  Ã¢â‚¬Å"Passionate, romantic Marianne and Willoughby, after an intense attraction that causes them to ignore the barriers between them, suffer and end up bitterly regretting their behavior.† (MP) Marianne and Willoughby put all of their trust into only each other and no one else, leaving them alone with no friends once their attraction disbanded. After the breakup, Marianne makes sure that the entire town knows that she is depressed and lonely without her love Willoughby. As you see her â€Å"alternately singing and crying; her voice often totally suspended by her tears,† (Austen 72) she is unable to cope with the fact that she is no longer apart of Willoughby’s life. â€Å"Meanwhile, the reasonable Elinor as been equally unlucky in love, though she bears her disappointment quite differently.† (CSLF) While Marianne is sobbing and weeping, putting her life on hold, Elinor tries to mitigate Marianne’s inimical attitude towards everyo ne. Elinor is continuing with her life, as the memories of Edward are evanescent. Elinor’s â€Å"feelings are not often shared,† (Austen 76) her business is her business and not the whole towns. Elinor does not feel that she must let everyone know her business, she only wants people to see her good side, not her gloomy side. She always puts her best foot forth to make herself look good in front of other people, which shows that she cares about the fact that other people may look down upon someone who is emotionally unstable, like her younger sister Marianne, and view that as a major weakness.   Ã‚  Ã‚  Ã‚  Ã‚  Edward Ferrars comes from a... ...nne suffered more emotionally due to her over trusting personality and her naà ¯ve nature. Happiness always wins out, however true love is only won by long hard struggles.   Ã‚  Ã‚  Ã‚  Ã‚  If two people are meant to be together, then love will eventually find a way through all of the obstacles, but if two people do not deserve each other’s love then they will be broken apart. Ignoring people and common rules of society will get you nowhere except lonely and unhappy. The ignorant naà ¯ve people like Marianne and Willoughby are the ones, who end p suffering, ignorance is a lonely way to go through life. Greed and jealousy of ones family is a difficult obstacle to overcome, however with that obstacle accomplished, it only proves a more pure true love, and shows a great deal of loyalty and strength in the two people who were able to win the battle. Obstacles to a marriage are what prove the love between two people, and without these obstacles two people can never know how strong their love is for one another. In order to know how much someone means to somebody else, their love must be tested by enduring painful obstacles, otherwise how do you kn ow if you can trust your love?

Holocaust Awareness…Contemporary Lessons Essay

Few events in recent history have had as dramatic an impact on history as the mass murder of Jews in concentration camps during World War II, the Holocaust. The Holocaust appears to be a well documented event (Hilberg, 1992), yet today there are those who feel it is just a myth. When he discovered the concentration camps, General and future President Dwight David Eisenhower knew that a future day would come when people would claim that the Holocaust never happened, so he took great pains to document and record the events on film so that the world would never forget. Even so, his efforts did not eliminate what he knew would happen. In spite of evidence to the contrary, today, there are many who claim that the Holocaust did not occur and that there is no evidence that it did. Yet the evidence suggests that is did happen and similar events such as the murder of more than 2 million people by the Khmer Rouge in Cambodia plus mass murders ethnic intolerance in Iraq, the Sudan, Rwanda and Yugoslavia continue to take place even now. During the early hours of September 1, 1939, Adolph Hitler invaded Poland bringing about the Second World War. Historically, this war began because of Hitler’s contempt regarding the way Germans were treated at the end of the First World War and other related issues. At the time World War II began, there was a world wide depression that helped bring Hitler rose to power in Germany and President Franklin Delano Roosevelt to power in the U. S. It is generally viewed that Hitler used the issue of Jewish economic domination in Germany both to push for war and as an excuse for the economic woes of Germany. (Bartov, 2000; Friedman, 1993). Ultimately, Hitler blamed the Jews for Germany’s economic problems and to begin exterminating them in concentration camps—mass genocide. (Gigliotti and Lang, 2005) on a scale that surpassed anything that had ever happened up to that time within so short a time span. Does engraining memories of past atrocities into the public psyche eliminate future atrocities? Political campaigns demonstrate that by slinging mud candidates provide name recognition for their opponent(s). In a similar vain, perhaps remembering the events of the Holocaust and similar events throughout history (and unfortunately, still occurring around the world today) will only drive home the fact that those events exist and are continuing. Do we really want to do that? We could be reinforcing the Holocaust in the minds of individuals who might not otherwise be aware that any such thing has ever happened or ever will. We have every reason to believe that Hitler knew of the mass extermination of the millions of Jews but ironically, there is no documented evidence in writing to confirm this idea. (Irving, 1977) Most German citizens during WWII also claimed ignorance of the Jewish extermination in progress at the time. â€Å"How could such a widespread extermination and mass murder have gone unnoticed† and â€Å"Where are the documents to show that Hitler was aware of it? † Today, nearly seventy years after the beginning of WWII and Jewish extermination, the question is still asked, â€Å"Did Hitler even know about the Jewish extermination process underway? † The fact that anyone even asks this question is, perhaps, the greatest evidence that we need to teach that it is a real part of human history. While it seems irrational to assume that Hitler actually had no knowledge of what was going on, it appears to be equally true that few if any documents exist to demonstrate his knowledge of what was going on (Irving, 1977) even though there certainly appears to be a great deal of documentation about the war and the Holocaust (Wolfe, 1990). We can only wonder why these contradictory situations exist. In his 1977 book Hitler’s War, one noted British historian, David Irving, outlines why he feels that stories of the mass killings of European Jews in Death Camps are merely British and American inventions, war-time propaganda perpetrated by the Allies. Irving presents several lines of argument to support his claims. For example, he points out that there is no archival evidence anywhere for the gassings, no wartime German documents that refer to the gassings of human beings and there is no clear evidence as to who gave the orders to gas people. He also claims that forensic tests of the laboratories, crematoria, gas chambers and Auschwitz fail to find any trace or significant residue of a cyanide compound. Irving dismisses eye witness accounts on the grounds that there are equal numbers of eye witness accounts of the gas chambers in Dachau even though there weren’t any gas chambers in Dachau and he believes that photographs documenting the Holocaust have been misrepresented. Why is it so vital that we remember the Holocaust? Arguments can be made both for and against that stance, but certainly, the history of the Holocaust should not be slighted or overlooked. The repeated efforts to try to wipe the memory of the Holocaust out of the human psyche as if it never occurred may be one of the strongest points in favor or remembering it. The intended purpose of â€Å"engraining† events from the Holocaust into the mind of today’s generation is to allow them to learn the lessons of horror from the past and avoid them—so that we won’t repeat them. Whether this is true or not, we more or less taking comfort in the belief, right or wrong, that if people see the horrors of those events, they will make every effort to avoid them, prevent them and take precautions against repeating them whenever they see the signs in the future. Perhaps the way to combat future human atrocities is to focus on the opposite rather than to memorialize them. What lessons can we learn from the Holocaust? First, the Holocaust demonstrates how large groups and numbers of people, even on the scale of nations, can subtly be influenced into â€Å"groupthink† (i. e. , where groups of people think and behave alike because others are thinking and behaving the same way) (Janis, 1972) and manipulated by a very few influential individuals. Second, the Holocaust demonstrates that all too often, man treats his fellow man inhumanely. â€Å"How do we avoid this in the future? † I fear that there is no global answer. Whenever such a situation begins in the future, only then can we address the issue. Another lesson we can learn is that anyone can be the victim, so everyone should recognize and acknowledge it whenever it happens. When we recognize it, we must act together to stop it, and that, unfortunately, is much easier said then done. Perhaps there is no satisfactory solution to preventing future atrocities like the Holocaust. In he end, perhaps all be can do is to try to recognize such events when we see them approaching and then to do everything we can to prevent them. References Bartov, Omar. The Holocaust. Origin, Implementation, Aftermath. New York, NY: Routledge, 2000. Friedman, Saul S. Holocaust Literature. A Handbook of Critical, Historical and Literary Writing. Westport, CT: Greenwood Press, 1993.Gigliotti, Simone and Berel Lang. The Holocaust. A Reader. Oxford: Blackwell Publishing, 2005. Hilberg, Raul. Perpetrators Victims Bystanders. The Jewish Catastrophe 1933-1945. New York, NY: Aaron Asher Books, 1992. Irving, David. Hitler’s War. New York, NY: Viking Press, 1977. Janis, Irving L. Victims of Groupthink. Boston: Houghton Mifflin Company, 1972. Levi, Neil and Michael Rothberg. The Holocaust. Theoretical Readings. New Brunswick. NJ: Rutgers University Press, 2003. Wolfe, Robert. Holocaust. The Documentary Evidence. Washington, DC: National Archives and Records Administration, 1990.

Enzymes in food production

Enzymes in food production BY csw29 Explain the use of enzymes in food production by means of examples. You must include the example of lactase. Enzymes are proteins that speed up the rate of chemical reactions (up to a million times) in living organisms. Acting as catalysts they are not consumed nor altered in the process of converting the specific set of reactants into specific products. In food production, enzymes are greatly appreciated by their accelerated effect in biochemical processes and are mostly used in what we know as fermentation.Humans have been using the process of fermentation for centuries. Fermentation consists of a chemical breakdown of any substance by the means of bacteria, yeast or other microorganisms. It has the added benefit of preserving our food longer. Here are a few well-known examples of fermentation processes. The Rennet is a natural enzyme mixture (found in calves' fourth stomach), in which the enzyme chymosin destroys the kappa casein protein.This al lows the milk to coagulate and to form the curd (solid separated from liquid). Another very old example of fermentation is the use of enzymes to transform grape Juice into wine. Preparations of enzymes (there are many such as: pectinase, cellulase, glucanase and glycosidase) are used in wine making to decompose grape pulp, break down skin cells and amplify and improve the fermentation process in general.Using enzymes also allows extracting more Juice out of the grapes as they destroy the pectin (present in the walls of grape cells). Pectinase (a structural heteropolysaccharide) is what prevents wine makers to get the full potential of must quality. Biotechnology is really Just inventing new ways to ameliorate these old processes of ermentation, by genetically modifying and optimizing microorganisms for the production of enzymes. Furthermore, this allows us to eliminate the reliance on livestock for these enzymes.However, while the microorganisms are genetically modified, the enzymes produced are identical to those found in nature. Enzymes are then utilized in order to make fermentation more efficient in making improvements to the quality of our food. For instance, enzymes are used in the manufacture of fruit juice, corn syrup, beer, cheese, yogurt, sausage and many other foods and drinks. As a matter of fact food producers use over 55 different enzymes to manufacture many finished foods present in our daily diets.

Fermentation vs. Anaerobic Respiration

Fermentation vs. Anaerobic Respiration All living things must have constant sources of energy to continue performing even the most basic life functions.  Whether that energy comes straight from the sun through photosynthesis or through eating plants or animals, the energy must be consumed and then changed into a usable form such as adenosine triphosphate (ATP). Many mechanisms can convert the original energy source into ATP.  The most efficient way is through aerobic respiration, which requires oxygen. This method gives the most ATP per energy input.  However, if oxygen isnt available, the organism must still convert the energy using other means.  Such processes that happen without oxygen are called anaerobic.  Fermentation is a common way for living things to make ATP without oxygen.  Does this make fermentation the same thing as anaerobic respiration? The short answer is no.  Even though they have similar parts and neither uses oxygen, there are differences between fermentation and anaerobic respiration.  In fact, anaerobic respiration is much more like aerobic respiration than it is like fermentation. Fermentation Most science classes discuss fermentation only as an alternative to aerobic respiration.  Aerobic respiration begins with a process called glycolysis,  in which a carbohydrate such as glucose is broken down and, after losing some electrons, forms a molecule called pyruvate.  If theres a sufficient supply of oxygen, or sometimes other types of electron acceptors, the pyruvate moves to the next part of aerobic respiration.  The process of glycolysis makes a net gain of 2 ATP. Fermentation is essentially the same process.  The carbohydrate is broken down, but instead of making pyruvate, the final product is a different molecule depending on the type of fermentation.  Fermentation is most often triggered by a lack of sufficient amounts of oxygen to continue running the aerobic respiration chain.  Humans undergo lactic acid fermentation. Instead of finishing with pyruvate, lactic acid is created.  Distance runners are familiar with lactic acid, which can build up in the muscles and cause cramping. Other organisms can undergo alcoholic fermentation, where the result is neither pyruvate nor lactic acid.  In this case, the organism makes ethyl alcohol.  Other types of fermentation are less common, but all yield different products depending on the organism undergoing fermentation. Since fermentation doesnt use the electron transport chain, it isnt considered a type of respiration. Anaerobic Respiration Even though fermentation happens without oxygen, it isnt the same as anaerobic respiration.  Anaerobic respiration begins the same way as aerobic respiration and fermentation.  The first step is still glycolysis, and it still creates 2 ATP from one carbohydrate molecule.  However, instead of ending with glycolysis, as fermentation does, anaerobic respiration creates pyruvate and then continues on the same path as aerobic respiration. After making a molecule called acetyl coenzyme A, it continues to the citric acid cycle.  More electron carriers are made and then everything ends up at the electron transport chain.  The electron carriers deposit the electrons at the beginning of the chain and then, through a process called chemiosmosis, produce many ATP.  For the electron transport chain to continue working, there must be a final electron acceptor.  If that acceptor is oxygen, the process is considered aerobic respiration.  However, some types of organisms, including many types of bacteria and other microorganisms, can use different final electron acceptors.  These include nitrate ions, sulfate ions, or even carbon dioxide.   Scientists believe that fermentation and anaerobic respiration are older processes than aerobic respiration.  Lack of oxygen in the early Earths atmosphere made aerobic respiration impossible.  Through evolution, eukaryotes acquired the ability to use the oxygen waste from photosynthesis to create aerobic respiration.

Chi-Square Goodness of Fit Test

Chi-Square Goodness of Fit Test The chi-square goodness of fit test is a variation of the more general chi-square test. The setting for this test is a single categorical variable that can have many levels. Often in this situation, we will have a theoretical model in mind for a categorical variable. Through this model we expect certain proportions of the population to fall into each of these levels. A goodness of fit test determines how well the expected proportions in our theoretical model matches reality. Null and Alternative Hypotheses The null and alternative hypotheses for a goodness of fit test look different than some of our other hypothesis tests. One reason for this is that a chi-square goodness of fit test is a nonparametric method. This means that our test does not concern a single population parameter. Thus the null hypothesis does not state that a single parameter takes on a certain value. We start with a categorical variable with n levels and let pi be the proportion of the population at level i. Our theoretical model has values of qi for each of the proportions. The statement of the null and alternative hypotheses are as follows: H0: p1 q1, p2 q2, . . . pn qnHa: For at least one i, pi is not equal to qi. Actual and Expected Counts The calculation of a chi-square statistic involves a comparison between actual counts of variables from the data in our simple random sample and the expected counts of these variables. The actual counts come directly from our sample. The way that the expected counts are calculated depends upon the particular chi-square test that we are using. For a goodness of fit test, we have a theoretical model for how our data should be proportioned. We simply multiply these proportions by the sample size n to obtain our expected counts. Computing Test Statistic The chi-square statistic for goodness of fit test is determined by comparing the actual and expected counts for each level of our categorical variable. The steps to computing the chi-square statistic for a goodness of fit test are as follows: For each level, subtract the observed count from the expected count.Square each of these differences.Divide each of these squared differences by the corresponding expected value.Add all of the numbers from the previous step together. This is our chi-square statistic. If our theoretical model matches the observed data perfectly, then the expected counts will show no deviation whatsoever from the observed counts of our variable. This will mean that we will have a chi-square statistic of zero. In any other situation, the chi-square statistic will be a positive number. Degrees of Freedom The number of degrees of freedom requires no difficult calculations. All that we need to do is subtract one from the number of levels of our categorical variable. This number will inform us on which of the infinite chi-square distributions we should use. Chi-square Table and P-Value The chi-square statistic that we calculated corresponds to a particular location on a chi-square distribution with the appropriate number of degrees of freedom. The p-value determines the probability of obtaining a test statistic this extreme, assuming that the null hypothesis is true. We can use a table of values for a chi-square distribution to determine the p-value of our hypothesis test. If we have statistical software available, then this can be used to obtain a better estimate of the p-value. Decision Rule We make our decision on whether to reject the null hypothesis based upon a predetermined level of significance. If our p-value is less than or equal to this level of significance, then we reject the null hypothesis. Otherwise, we fail to reject the null hypothesis.

What is the difference between Art & Design Essay

What is the difference between Art & Design - Essay Example This paper will review the dissimilarities between the two, and what brands the two so differently. One of the key dissimilarities that exist between art and design is the purpose in which they are created. The work of art starts from nothing other than an empty canvas. Through feeling and opinions, works of art are put on canvas that brings out what the artist feels. They are inspired by these emotions which then capture the attention of the audience (Fichner-Rathus 89). Designers, whether starting on a new piece, will always have a fixed point from where to start. They are used to communicating something that people already know exists. By doing this, they motivate the audience to do something with regards to another form of art. The interpretation of the messages communicated by art and design is also a difference between the two. Artists set out to convey a certain message. However, it is usually not always certain if the massage being conveyed has one or many meanings. As there are many interpretations for different art by different audiences, art connects differently with people. Designs are meant to convey a meaning (Fichner-Rathus 95). If they convey something different other than what the designer intended, then they have not met the requirement. The taste exhibited by the audience is likely to judge art and design differently. The taste that an audience may exhibit might determine how they interpret the message being brought forth by a piece of art. Likes and dislikes can alter the interpretation of the message, and the meaning by an artist. Design, regardless of taste, can be successful (Fichner-Rathus 97). If a certain design achieves the objective of making the audience do a task, it is only a matter of opinion if it is exceptional or poor. Art and design are seen differently. Exceptional art is seen as talent, whereas exceptional designing technique is considered skill. Artists have the natural ability to put creativity on a canvas at a