Ecology :: essays research papers

In the original Greek "oikos" means, "house". So ecology is "the study of the house" the place where you live, or the environment which technically includes all those factors, both nonliving and living, that affect an organism. Ecology then is the study of the interactions of organisms in their environment includes both the living (biotic) and physical (abiotic) factors of the environment. It's also the science, which formulates and tests hypotheses about environment. Ecology is the relationships, identification and analysis of problems common to all areas. Ecology studies the population and the community, evaluates cause and effects of the responses of populations and communities to environmental change. POPULATIONS The population is defined as an assemblage of individuals of a single species that live in the same place at the same time. Also, biologists add an additional condition: the individuals in a population must interact with each other to the point of being able to interbreed. Population is important to understanding many important ecological and evolutionary phenomena. Ecologists can use information from population ecology to predict the success of a given species or assemblage of species. One attribute of populations that is observed in nature is their dispersion, or the way in which individuals are distributed in a given area. Typically, biologists refer to three types of dispersion: - Clustered (aggregated), Regular (evenly spaced), Random (irregularly spaced) Populations showing a clustered pattern are common in nature and are found among many different types of organisms. Clustered dispersion patterns are often due to environment heterogeneity. Regular dispersion patterns are relatively rare in nature and occur when a resource is scarce. A good example of regular spacing occurs in animals that exhibit territoriality, a phenomenon in which animals establish an area for themselves and fight off all other individual seeking to invade that area. Regular dispersion patterns can also be observed in plants. Random patterns can be found in a variety of organisms (trout in lake or maple trees in a forest). Regardless of which organisms, the number of births almost always has the potential to be greater than the number of deaths. In other words populations of all species have the capacity to grow. That property is crucial importance to the success of all species. However, all species will not increase under all circumstance, but instead they can, given appropriate conditions. There are two models of population growth: the exponential model and the logistic model. One of the most basic models of population biology is the exponential growth equation, which is: )N/)t = rmaxN This equation states that, in a growing population, the rate of change in population size is determined by the maximal intrinsic rate of increase (rmax) multiplied by the number of individuals in that population (N). Ecology :: essays research papers In the original Greek "oikos" means, "house". So ecology is "the study of the house" the place where you live, or the environment which technically includes all those factors, both nonliving and living, that affect an organism. Ecology then is the study of the interactions of organisms in their environment includes both the living (biotic) and physical (abiotic) factors of the environment. It's also the science, which formulates and tests hypotheses about environment. Ecology is the relationships, identification and analysis of problems common to all areas. Ecology studies the population and the community, evaluates cause and effects of the responses of populations and communities to environmental change. POPULATIONS The population is defined as an assemblage of individuals of a single species that live in the same place at the same time. Also, biologists add an additional condition: the individuals in a population must interact with each other to the point of being able to interbreed. Population is important to understanding many important ecological and evolutionary phenomena. Ecologists can use information from population ecology to predict the success of a given species or assemblage of species. One attribute of populations that is observed in nature is their dispersion, or the way in which individuals are distributed in a given area. Typically, biologists refer to three types of dispersion: - Clustered (aggregated), Regular (evenly spaced), Random (irregularly spaced) Populations showing a clustered pattern are common in nature and are found among many different types of organisms. Clustered dispersion patterns are often due to environment heterogeneity. Regular dispersion patterns are relatively rare in nature and occur when a resource is scarce. A good example of regular spacing occurs in animals that exhibit territoriality, a phenomenon in which animals establish an area for themselves and fight off all other individual seeking to invade that area. Regular dispersion patterns can also be observed in plants. Random patterns can be found in a variety of organisms (trout in lake or maple trees in a forest). Regardless of which organisms, the number of births almost always has the potential to be greater than the number of deaths. In other words populations of all species have the capacity to grow. That property is crucial importance to the success of all species. However, all species will not increase under all circumstance, but instead they can, given appropriate conditions. There are two models of population growth: the exponential model and the logistic model. One of the most basic models of population biology is the exponential growth equation, which is: )N/)t = rmaxN This equation states that, in a growing population, the rate of change in population size is determined by the maximal intrinsic rate of increase (rmax) multiplied by the number of individuals in that population (N).

Chapter 4 of Mary Shelleys Frankenstein Essay -- Mary Shelley Franken

Chapter 4 of Mary Shelley's Frankenstein In 1816 the famous gothic novel ‘Frankenstein’ was begun, Frankenstein was largely successful because it was the first sci-fi novel that anyone had ever seen. The Gothicism that this genre is meant to expose is very good because it really is written to evoke terror in readers and show the dark side of human nature, and of course another reason the novel was a success, was because the author Mary Shelley had a first hand experience of the death that this book precedes. Mary began the novel in Italy after staying with Lord Byron and after a discussion about science they challenged each other to a ghost writing competition, Mary’s mother died soon after Mary was born. Mary had two children that died and one was called William, these experiences of death were mirrored in Mary’s novel. Also reading journals from her husbands early life, he wanted to be a surgeon, and after talking with him and the family doctor where she thought up the idea of using electricity to bring corpses to life. In this essay I will be writing the about atmosphere of the chapter, the facial contrasts of the creature, Frankenstein’s dream, the creatures intentions, the creatures special request, the prejudice against the creature and the destruction of Frankenstein. Frankenstein hysterical reaction towards his creation, I will show you is prejudice and unjust. At the beginning of the chapter 4 Mary Shelley starts off by setting the scene of Frankenstein’s workshop, the aura created around the scene was shown as sinister and dreary, I comprehend from the text that it was a rainy night by the following quotes, â€Å"It was on a dreary night of November.† â€Å"The rain pattered dismally against the... ...re children how they should be looked after or else the child will grow up the same way he was brought up in a non-caring way, and also that everyone in society has responsibility to the helpless and needy, because they too want to be helped and accepted by others or they too will feel unable to manage with the life that was brought on to them. It also shows that no matter what, there will be prejudice found in your lifetime and they will be prejudice towards you, but in this novel Frankenstein’s creation was called The Monster, but he is only misunderstood the real monster in this novel is Victor Frankenstein himself, and all the torture he went through he brought upon himself. In conclusion, you have a responsibility towards everyone else, and your actions you hold may be brought against you if you cannot bring yourself to show the correct moral ethics.

Never say Never :: essays research papers

A Jury of Her Peers "A Jury of Her Peers" is a story taut with violence. At no time do we see blood; there is no screaming; there are no corpses; there are none of the trappings our Gothic imaginations have come to expect. And yet in this homely little story about quilting and canning and pet canaries, the psychological tension is almost unendurable -- and much of the tension revolves around gender-specific ways of seeing the world. The story concerns a farmer, John Wright, who is found strangled in his bed; his wife is arrested for the murder. The story ¡Ã‚ ¯s action begins the following day, when the sheriff, the county attorney, the sheriff ¡Ã‚ ¯s wife, and a neighbor couple return to the Wrights ¡Ã‚ ¯ house. The women are there to pick out some clothes for the accused wife to wear in prison; the men, to check over the crime scene. Although the story ¡Ã‚ ¯s purpose is to penetrate the motive for Mrs. Wright ¡Ã‚ ¯s murder of her husband, the sheriff ¡Ã‚ ¯s wife, Mrs. Peters, and the neighbor Mrs. Hale occupy center stage -- and it is really their story. Sheriff Peters and Mr. Hale wander in and out, mostly passing through as they move from one part of the house to the other, commenting about the slovenly housekeeping and the general air of cheerlessness. At first it is clear that the women do not want to be here, either; the house is too cold and too still, and what happened here the day before was too awful. The women feel defensive in this house, partially because of the disparaging way the men refer to the little details of Mrs. Wright ¡Ã‚ ¯s life. The men laugh at their wives ¡Ã‚ ¯ admiration of Mrs. Wright ¡Ã‚ ¯s fine stitching on her quilt, and when the women express sadness over Mrs. Wright ¡Ã‚ ¯s broken jars of jam, Sheriff Peters finds this tremendously humorous: "Well, can you beat t he women! Held for murder, and worrying about her preserves. . . . I guess before we ¡Ã‚ ¯re through with her she may have something more serious than preserves to worry about." "Oh, well," said Mrs. Hale's husband, with good-natured superiority, "women are used to worrying over trifles." But it is precisely these types of "trifles" that eventually prove to them that Mrs. Wright did kill her husband, and why. It also convinces the two women to keep that information to themselves, lest it prove incriminating to this woman they barely know, but whom they feel certain was entirely justified in her act.

Information security system

What is the OSI security architecture? Ans) A Systematic way of defining the requirements for security and characterizing the approaches to satisfying them is generally defined as â€Å"OSI security architecture†. This was developed as an international standard. Focuses of OSI Security Architecture: 1) Security attacks – action that compromises the security of information owned by an organization. 2) Security mechanism – designed to detect, prevent, or recover from a security attack. ) Security service – intended to counter security attacks. 1. ) What the difference between passive and active security threats? Ans) Passive Threats makes attempt to learn or make use of information from the system but does not affect any system resources whereas active threats involve modification of the data stream. So in passive attack a hacker intrudes your system, and waits for some valuable information. In an active attack a hacker tries to get the valuable information by using his abilities rather than depending on the stupidity of the victim.Example for passive attack: A key logger which sends the input given by the victim to a hacker via a network (LAN). Example for Active attack: Using Brute force to crack the password of a system. 1. 5) List and briefly define categories of security service Ans) The major categories of security service are namely: Confidentially: The protection of data from unauthorized disclosure by encryption and decryption-preserving authorized restrictions on information access and disclosure, including means for protecting personal privacy and proprietary information.Authentication: The assurance that the communicating entity is the one that it claims to be. The problem of authorization is often thought to be identical to hat of authentication; many widely adopted standard security protocols, obligatory regulations, and even statutes are based on this assumption. Integrity: The assurance that data received are exactly as sent by an authorized entity.End user will receive what is sent-guarding against improper information modification or destruction, including ensuring information nonrepudiation and authenticity Access control: The prevention of unauthorized use of a resource means this service controls that have access to a resource, under what conditions access can occur, and what those accessing the resource are allowed to do.Ability: Time for access-ensuring timely and reliable access to and use of information Availability: The property of a system or a system resource being accessible and usable upon demand by an authorized system entity, according to performance specifications for the system. Nonrepudiation: Provides protection against denial by one of the entities involved in Chapter 2: 2. 2) How many keys are required for 2 people to communicate via a symmetric cipher? Ans ) Only one key is required for 2 people to communicate via a symmetric cipher. The key distribution will send the same k ey/ single key for encryption and ecryption process. . 9) List and briefly defines three uses of a public key cryptosystem Ans) Encryption/decryption: The sender encrypts a message with the recipient's public key. Digital signature: The sender â€Å"signs† a message with its private key. Signing is achieved by a cryptographic algorithm applied to the message or to a small block of data that is a function of the message. Key exchange: Two sides cooperate to exchange a session key. Several different approaches are possible, involving the private key(s) of one or both parties. 2. 10) What is the difference between private key and a secret key?Ans) Secret key is used in symmetric encryption. Both sender and receiver have obtained copies of a secret key in secure fashion and keep the key secured. The private key is used with public key in asymmetric encryption. The sender will send encryption document with the receiver public key, then the receiver will decrypt the document with h is/ her private key. The â€Å"private key† is not shared with anyone. The secret key must be transmitted to or shared with all parties by a method outside the communications link it is intended to secure. 2. 13) How can public key encryption be used to distribute a secret key?Ans) Several different pproaches are possible, involving the private key(s) of one or both parties. One approach is Diffle-Hellman key exchange. Another approach is for the sender to encrypt a secret key with the recipient's public key. The key distribution uses the asymmetric encryption to send secret key to the receiver by her/ his public key. Then the receiver will use his/ her private key to decrypt to get her/ his secret key. Problem: 2. 9)Construct a figure similar to figure 2. 9 that includes a digital signature to authenticate the message in the digital envelope. Sol) We can Show the creation of digital envelope as a solution.

How Propaganda Helped the Nazi Government to Control Germany Essay

The Nazis used propaganda in many different ways. They closed down all the opposing newspapers available to German people controlled by Nazis. This means that the Germans only read good things about the Nazis they couldn’t see all the malicious things they had been doing. Radio stations were to broadcast Nazi programmes featuring speeches by Hitler and German antisemitic music. There were many Nazi parades and rallies. There were posters everywhere, these emphasized the strengths and the positive things about Nazis, however, they could be easily ignored. Speeches by Hitler could be heard on loudspeakers in many places, this made people respect and admire him. Foreign films were banned and new antisemitic Aryan films were made, showing all the Nazi achievements and advertising antisemitism and Arianism. This also emphasized the strengths of Hitler, the Nazis and Aryan Germany. The Germans only saw the fabulous things about the Nazis, some people were oblivious to the horrible and wrong things going on and many people agreed with it. People didn’t like Jews. Hitler and the Nazis built on this hate, saying that they were to blame for Germany’s decline. Hitler wouldn’t let anybody see the whole picture, he used positivity, made Germans proud.The Nazis incinerated all non-German, Jewish and communist books. Hitler rewrote school books to say wonderful things about Aryans and the Nazis, this made the children admire him and the boys want to be like him.The Germans arrested all the people that said anything unwanted about Hitler or the Nazis. People were encouraged to denounce each other, neighbors, friends and family. They also arrested all the opponents such as communists, Jews and anti-Nazis. Anybody that might make people think bad of the Hitler and the Nazis were punished: arrested, sent to camps, a lot of people were exterminated. Free short-range radios were given out so Hitler could be in everyone’s homes and so the people can’t listen to BBC speaking the wise truth!

“Floating” By Karen Brennan Essay

â€Å"But no one owns anyone or owes anyone anything† (Brennan 304). In the story â€Å"Floating,† Karen Brennan uses the themes of regret, rejection, guilt and death, to demonstrate how trauma in a relationship effects both sides differently. She illustrates the difference between herself and her husband, telling the story of what she feels and what her husband feels. In the beginning a sense of rejection is presented, this is shown when Karen quotes, â€Å"I woke up and heard a tiny sound coming from the back of the house. It was a baby†¦.she had been crying for two days straight and had survived,† (Brennan 302). Reading this quote the reader can make the assumption that there is a sense of rejection in the story and also that the narrator had been rejecting the baby for a while. She states, â€Å"she had been crying for two days straight.† This shows that not only did the narrator hear her but had ignored the baby for those two days. Rejection was not only seen with the baby but also the husband as well. The husband showed rejection towards the wife, and the wife reciprocated that rejection towards the baby. â€Å"My husband was in the living room, I said look what I can do I floated up†¦ my husband shook his head†¦ he wasn’t shocked.† (302). In the story the narrator portrayed the husband as an emotionless, uncaring person who once, cared for his wife but now feels the need to remain unresponsive. Brennan presents the wife’s thoughts of rejection and also the husband’s point of view of rejection. â€Å"Satan appeared on a cloud†¦fixed himself a snack†¦ then she snapped his picture,† (302). Through the end of the first paragraph, the reader can introduce the idea that the husband might be rejecting her because she might be having an affair. â€Å"Satan appeared,† represents the idea that there is another person who the wife might be seeing. In the story â€Å"Floating† regret was another big factor which played a role in the narrator and her husband’s marriage. â€Å"How do we get this way? I was a perfectly ordinary girl†¦ I married a nice responsible man who loved me. He gave me my first umbrella,† (303). Regret was used to introduce the deep dysfunction of their marriage, that it even made the narrator question her past and the marriage itself, â€Å"he gave me my first  umbrella.’’ The narrator reminisces or revisits the first time she ever felt safe, sheltered by someone else other than her immediate family. Karen relates shelter to an umbrella, because in a sense, an umbrella protects our body from the rain. The umbrella is also significant, because it leaves the audience questioning- is that all the husband was able to provide? In the quote, â€Å"My first umbrella† demonstrates that the narrator only felt protected by the husband not loved. â€Å"How do we get t his way? I was a perfectly ordinary girl† portrays a feeling of regret to the reader. The narrator uses this to show how she had changed and could not believe it herself almost as if she shocked herself with her change. She asks a rhetorical question â€Å"How do we get this way?† She cannot convey an answer to; however allows the reader to find a solution. This gives rise to a deeper meaning to the quote. â€Å"I was a perfectly ordinary girl† the word was in her sentence shows that she once was perfect and now she has change and she regrets it. In the husband’s point of view, this could mean that she questioned her affair or marriage and regrets the fact she ever cheated on him and or ever married him. â€Å"This is a secret baby: the baby of my afterhours†¦ no one especially my husband, would understand this,† (303). According to the reader, this could mean that she is having regrets about the baby. The narrator refers to her baby as, â€Å"This is a secret baby,† and hides it from the world, including her husband. Not only does she keep this baby in secrecy, she also chooses to say that her husband would not understand. This states that, through the disheartenment Karen Brennan still possesses a sense of hope that one day her husband will understand. But her husband only ignores her and reject the fact that she is â€Å"floating,† Furthermore, Karen Brennen presents the theme of death, including both perspectives of death as a way of demonstrating the differences and problems shared in and out of their marriage. â€Å"She had all the plumpness of a baby; dimpled knees and folds around the wrists; pale baby skin,† (302). The narrator indicates that the baby skin was pale. From the context clues, the reader could imply that the baby could be lifeless or suffering from the strain of death. However the narrator brings the attention to the reader that the baby had survived. She quotes, â€Å"she had survived.† This presents the reader with the evidence that the baby is no longer alive and it is in fact dead. The word had shows the reader that the baby was alive at a point  in time, but in that instant the baby is dead. Karen Brennan shows how death plays a role in the story. She manipulates the sentence debating a sense of hope for the life of the baby, but then she abruptly changes the tone of the story using descriptive passages of the baby taking away any previous hope that the child lived. The death of the baby was so traumatic that even the narrator could not shake the restraint of disparity, being forced to remember the baby as the time progresses. In addition, the death of the baby could stimulate on the husband’s negative attitude towards his wife, â€Å"I wish I had the nerve to go outside, I tell him. He grunts as if nothing was out of the ordinary,† (303). The narrator draws a picture of the husband’s attitude as very rude and angry. As a reader, this could indicate that the husband’s attitude (mad and angry) might be angry about the loss of the baby, or maybe reflects his beliefs that his deceased wife is tormenting him for neglecting her. â€Å"Then I turned on my back and dead man’s-floated parallel to the ceiling† (302). According to the words, â€Å"dead man,† she might be in fact dead and it is her ghost who floats around trapped in her room- trapped in the house unable to be free. Lastly, Karen Brennan uses guilt as a form to describe what should have been done during their marriage and what could have been changed. What they could have done differently and what they could still do? â€Å"I want us to be friends, to be affectionate with one another. But he just looks down† (304). Karen Brennan shows the guilt the wife is feeling in the relationship. She states, â€Å"I want us to be friends, to be affectionate.† Reading this quote, the reader can conclude that the narrator did not really feel love towards her husband, and now she is feeling guilty for not being able to create that sense of affection between them. This makes her feel obligated to end the relationship and become friends. In addition to the story, reading it from the husband’s point-of-view the reader can say that the husband feels guilty for not being able to provide the love the wife needs, which leads the narrator to state, â€Å"but he just looks down.† This quote could indicate the husband is wallowing in self-pity and unsure of what to say or what to do at this point of the marriage. Overall. Karen Brennan presents the reader with many different aspects of the story â€Å"Floating†. Portraying the themes guilt, regret, rejection or death. Karen  Brennan indicates all the flaws of which both the husband and wife have, and she also presents the possibilities of different ideas to incorporate the story with. In the end, the two perceptions of both the husband and the wife were the same. They both want to be affectionate or want out of the relationship.

Kellogg’s Marketing

Phase 1 Company’s Market Planning Colorado Technical University MKT210-1301B-07 Fundamentals of Marketing Lou Piermatteo February 25, 2013 Frosted Mini-Wheat’s The product I have chosen is Frosted mini-wheat. Frosted mini-wheat is one of the number one products of breakfast food. Frosted mini-wheat was first launched on the east coast in 1961. In 1961 Frosted mini-wheat’s was nationally debuted making mornings shine from sea to shining sea. Frosted mini-wheat is made of whole-grain fiber to keep you at your best all morning long. We will be discussing the market strategy and mission goals of Kellogg’s frosted mini-wheat.Kellogg’s and frosted mini wheat’s take pride in helping people stay healthy and in fit. Company’s Mission Statement Frosted mini-wheat’s mission statement or jingle is â€Å" Keeps’em full and focused† (Kellogg’s 2012). Frosted mini-wheat’s is a big breakfast in a little biscuit. Kell ogg’s believes that every morning should start with a healthy breakfast. Kellogg’s frosted mini-wheat’s has commercials all over the television today. They are ranked number 17 in television advertising. Frosted mini-wheat’s is one of the top cereal marketers; they market directly to the parent’s and not the children.The television commercial’s target children to get them to eat a more healthy breakfast to get their day started. Kellogg’s frosted mini-wheat’s is packed with fiber and almost a full days’ worth of gains to keep you full all morning(Kellogg’s 2012). Kellogg is a Global Company Committed to Building Long-Term Growth In Volume and Profit and to Enhancing its Worldwide Leadership Position by Providing Nutritious Food Products of Superior Value Company’s Business and Marketing objective and goalsKellogg’s is focused on enriching and delighting the world though foods and brands that matter. They are nourishing families so they can thrive and flourish. Kellogg’s is a company of possibilities and promises of people and their well-being. Today nutrition continues to be the core of our business. And cereal is an integral part of how we can help to meet the nutritional needs of people all over the world (Kellogg’s 2012). Kellogg’s believes in integrity, accountability, passion, humility, simplicity, and results.The more the company can do for the community the more people will want to buy their products. (Kellogg2012). What is the Company’s position in the Marketplace and it’s Differentiation Strategies? Kellogg’s is ranked number three is marketing facts from 2009 reports. They use television and internet marketing for their advertising. In February 2012, Kellogg’s introduced 2 dozen new products. They expected 15% of 2012 global sales from products introduced in the previous three years. Kellogg’s is commitment to pr oduct innovation has brands that consumers know and love (surperformance 2013).Kellogg’s financial highlights of 2011 show increases over the past five years. The net sales were up 4%, operation profit up by 2%, and the net earnings per share were up by 6%. Kellogg’s net sales for 2011 were $13. 2 billion dollars (Kellogg’s annual report 2011). The 2011 report shows the progress and future direction in four key areas; Marketplace, workplace, environment, and the community. Kellogg’s is dedicated to help the community. In February 2013, Kellogg’s pledged to provide one-half billion servings of breakfast to children and families who need it the most.They are the number one cereal company in the U. S. Kellogg has pledged $1 million in grants in the U. S. to nonprofit partners Action for Healthy Kids ®, Share Our Strength's No Kid Hungry ® campaign and Food Research and Action Center so that more schools can participate in federally-funded breakfas t programs. The company will also work to expand breakfast programs around the globe, maximizing product donations and advocating for the important role breakfast plays in the diet. (Kellogg2012).Control 42% of global market share for Pre-sweeter cereal, which is more than triple the market share of any of their competitors. They have the strongest brand recognition and advertising recollection of all the cereal manufacturers (Kellogg2012). Kellogg’s is a very passionate company. They look out for their customers just as much as their employee’s. The more a company does for the community the more people will buy their products. Frosted mini-wheat’s is a cereal that Kellogg’s has promoted and made a number one cereal.There are many different kinds of frosted mini wheat’s to keep up with the changes and taste of people today. Frosted mini wheat’s are a nutrition and healthy breakfast for everyone. They're packed with fiber! That's what makes w hole grains so terrific. Starting your day with one bowl of Frosted Mini-Wheat’s ® cereal delivers 24% of the daily value of dietary fiber for adults. That's 3 times the fiber compared to Honey Nut Cheerios. (Kelloggs2012). Kellogg maintained its previously provided outlook for 2013.For 2013, Kellogg expects net sales growth to be approximately 7%, while reported earnings (excluding impact of mark-to-market adjustments but including Pringles integration costs) are expected to grow between 5% and 7%. Reported operating profit ((excluding impact of mark-to-market adjustments) is expected to increase at a higher rate than earnings growth (Zacks2013). References www. 4-traders. com/kellogg-company. com www. kelloggcompany. com www. kelloggcompany2011annualreport. com http://sg. finance. yahoo. com/news/kellogg-beats-overall-keeps-2013-181621345. html www. frostedminiwheats. com www. sbaweb. wayne. edu/~ssasser/pp29. ppt