Computer Networking Essay Example | Topics and Well Written Essays - 250 words

Computer Networking - Essay Example Sometimes attackers with the help of unauthorised access give huge amount of damages to IT companies. Because with the help of attack on their WLAN they get all the important information and data. Radio signal interference is used to remove that signals which can interrupt original signals from wireless devices but these radio IP interface can effect the connectivity of original signals, poor throughput and low data rates. Wireless equipment privacy is used at data link and physical layer of OSI model. As name implies, Wireless Equivalent Privacy goal is to provide an equivalent amount of security to all wired LAN networks. Wireless network is a type of computer network that has become vital for modern existence. The difference between wired and wireless networks is that multiple computer or devices can flexibly share resources without any additional installation of wiring. These resources can be a shared data, internet, printers and domain connectivity. In wired networks all communications can be possible by using some sort of any physical medium only, while wireless telecommunications networks are generally implemented and administered using radio communication over one or more access points. Some of benefits of wireless network are convenience, flexibility, productivity, easy setup, maintainable, expandable, robust security protection and cost. However, the disadvantages include interference in wireless signals because of any obstructions like wall or other wireless devices etc Cooper,4,2004. Nowadays, wireless networking is quickly become famous for both home and business networks and wireless products. Major organizations like IEEE, IFTF and Wi-Fi alliance are continually working to make improvement in this area. As stated above 802.11 was the original standard of the IEEE which could deliver 1-2 Mbps over 2.4 GHz range.

ICT - Changing the System of a Video Library Essay Example for Free

ICT Changing the System of a Video Library Essay Identify section The current system is a hand written and hand handled by Mr Roberts. It is a paper database where all details of the members, transaction and return details are stored. Mr Roberts currently operates all the system by himself and he does this to keep a record of all the bookings out of the videos, he does this by pen. He finds the page in the book allocated to the member, writes when the person needs to bring it back in, takes the payment then gives the video to the member. When a new member joins Mr Roberts takes all the details down in his book, then gives the new member a member number. Mr Roberts has to check every night for overdue videos. When a members page is full, then Mr Roberts has to get a new page, this just adds to the ever-growing file of Mr Roberts. There are lots of problems with the system, it is very slow, it would wear down with over use, he cannot cope with the growing number of customers, He has to check every night to see which videos are overdue and hand type each letter and send them off the same night. This would be increasingly difficult when lots of members join. Another problem is that the videos all have to be numbered and when a video is taken out a card is put in the original case giving the video number and return date. The new system would have to display all the details of the members on one screen and show when last rental and return was. It should be able to show all overdue videos on one screen. It should be very fast and speed up all aspects of the shop. If the database is faster and easier to manage then the number of members will increase and therefore so will the profit. Jonny Sharpe Possible solutions Mr Roberts could solve all his problems by using a filing cabinet. This would solve all his problems with information handling. The advantages of this would be that a filing cabinet is easier to cope than a filing book, the disadvantages are that it is still based on paper and they could easily be damaged or lost. Another problem is that it is still time consuming and would not be any faster, if anything slower than before. Another way to cope with this problem is putting all the files onto a computer. The computer would store all the information easily. The advantages of this are that it would significantly improve the speed and ease of running the video shop. The disadvantages are that it may cost a lot of money and all staff may not be trained in how to use a computer A computer program could be writ but expertise would be needed for this and this expertise I do not have. The next best alternative is that you could use a already existing program such as Microsoft Access. The information would be stored on multiple spread sheets, the information would consist of all the members details and the video details as well. These would be good because they can handle lots of multiplications and can search through information Mark foster System Choice Microsoft office xp professional edition. Pcworld: à ¯Ã‚ ¿Ã‚ ½519 Inc vat Any computer could be chosen as long as it has Microsoft access and a printer for printing reports. Software Justification Justify choice of software: Word: The program needs to handle numbers but word is very good at typing letters. Excel: This program would be ok for the video shop but there would have to be 1 sheet for the videos and 1 sheet for the members details. This program would not be able to type letters up and print the letters off. Access: This program is excellent, this is because you can merge the video details and the members details together to give records of loans. This program can also produce reports in letter form and print them off. Data needed 1. This database is for the videos, it should show the number code, name. 2. Members details should be shown on this page, name, address, membership number, telephone number, current video rented and the date it is due back. Design section This shows that I have made two tables to store information, one for the members details and one for the video details. I have entered 50 videos and 5o members into the tables. I have designed the system to alert me when there are overdue videos and to be able to book out videos and book in videos with ease. I linked the two together by making a link between the membership number and the video number as shown below. These next pictures are of my queries. They are update queries which update booking in and booking out of videos. They are linked between the two tables and display the videos booked out and the membership number of the person along with some details. This is my form design. The form is for a member to fill in to automatically add his details to the members table. This is my report. This is basically to inform members that they are in possession of a overdue video and they need to return it. Members have their own membership no and each video has its own video number. This way members and videos dont get mixed up. This is an application form for the video shop, members are asked to fill out basic details. Analysis 1) What do I need from my database. I want it to store information about my members, including their name, address, telephone number, membership number, date of birth. Also in each members record will be stored the video they have rented (its code, not its title to speed things up) and also the date it is due back. Customers can only rent one video per day and it must be returned the next day. I also want the database to store information about the videos, including its code, title, price, certificate and category, eg horror, action, comedy etc. I want a system that will let me book videos in and out very quickly, just by entering the members number and the video code. I also want a system to check which videos havent been returned and create a letter that could be sent out if it hasnt been returned after 1 week. Sometimes people forget they have it so this should be a polite reminder. If they havent returned it after 2 days, then I usually phone them, so I would need it to produce a list of names and telephone numbers. I will answer the other questions at a later time as there are customers in the shop. Regards. Mr Roberts 2) To collect data from new members I have a form that they fill out. They write on it their name, address, tel. number, and date of birth. I write their new membership number on it. 3) Each member has a membership number. It is a four-digit number, starting at 1000. 4) I dont use credit card details as there is too much security needed. 5) For new members I need two forms of identification, one with their name and address, i.e. a bank statement or gas bill for example and one with their photo on, i.e. theirs drivers licence or passport. 6) I havent got a password system. If you think I should have one let me know how you think it would work. The problem is that customers would have to tell me their password and other customers could overhear it so it wouldnt be that secure. Evaluation I think the final product meets the standards set by Mr. Roberts. The only mistakes I have made is that I have given the example members, membership numbers starting at 200 and they are only 3 digit. The final product can do everything specified in the design requirements made by Mr. Roberts. The opinions of the users would be on the questionnaire I made. The only improvements that could be made to my database is that I could maybe produce an automatic report displaying all the information of the member on a report whos video is late, instead of just having a basic template.

Liberation from Sin through Pearl in The Scarlet Letter Essay -- Scarl

Liberation from Sin through Pearl in The Scarlet Letter  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚      'This child ... hath come from the hand of God, to work in many ways upon her heart ... It was meant for a blessing, for the one blessing of her life! It was meant, doubtless ... for a retribution too; a torture to be felt at many an unthought-of moment; a pang, as sting, an ever-recurring agony, in the midst of a troubled joy!" (Hawthorne 105) This, as Arthur Dimmesdale almost prophetically expresses in the early scenes of Hawthorne's The Scarlet Letter, was the role of Pearl, the elfish child borne of his and Hester Prynne's guilty passion. Like Paul's thorn in the flesh, Pearl would bring trouble, heartache, and frustration to Hester, but serve a constructive purpose lying far beyond the daily provocations of her childish impishness. While in many respects a tormentor to Hester, Pearl was also her savior, while a reminder of her guilt, a promoter of honesty and true Virtue; and while an embodiment of Hester's worst qualities, a vision of a better life for Hester and for herself. From the very beginning of The Scarlet Letter, while Hester is shamed by having a baby as tangible evidence of her sin and shame, the responsibility of caring for Pearl and raising her with love and wisdom serves to calm the defiant, destructive passion of Hester's nature and to save her from its wild, desperate promptings. This sentiment is poignantly portrayed in Hester's visit to the Governor's mansion. While there, she pleads with the Governor, magistrates, and ministers that she be allowed to keep Pearl, exclaiming, 'She is my happiness!--She is my torture, none the less! Pearl keeps me here in life! Pearl punishes me too! See ye not, she is the scarlet letter, only... ...er to overcome the passion, once so wild that had brought her to ruin and shame." (Hawthorne, 165) It was Hester's motherly sentiments to nurture and love her child that saved her from temptation and from death and opened her heart to the poor and needy around her. It was the torturous fixation of her child upon her shame that tempered and refined her character and led her toward the precious virtue of being true to herself and others. And it was the reflection of her own character, even at Its worst, in her child that brought Hester to a greater understanding of herself and a desire to build a better life for Pearl. Pearl was more than merely her mother's tormentor--she was her blessing, her life, and the giver of the freedom to live a life true to herself and to her God. Works Cited Hawthorne, Nathaniel. The Scarlet Letter. New York: Bantam Books, 1989. Liberation from Sin through Pearl in The Scarlet Letter Essay -- Scarl Liberation from Sin through Pearl in The Scarlet Letter  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚      'This child ... hath come from the hand of God, to work in many ways upon her heart ... It was meant for a blessing, for the one blessing of her life! It was meant, doubtless ... for a retribution too; a torture to be felt at many an unthought-of moment; a pang, as sting, an ever-recurring agony, in the midst of a troubled joy!" (Hawthorne 105) This, as Arthur Dimmesdale almost prophetically expresses in the early scenes of Hawthorne's The Scarlet Letter, was the role of Pearl, the elfish child borne of his and Hester Prynne's guilty passion. Like Paul's thorn in the flesh, Pearl would bring trouble, heartache, and frustration to Hester, but serve a constructive purpose lying far beyond the daily provocations of her childish impishness. While in many respects a tormentor to Hester, Pearl was also her savior, while a reminder of her guilt, a promoter of honesty and true Virtue; and while an embodiment of Hester's worst qualities, a vision of a better life for Hester and for herself. From the very beginning of The Scarlet Letter, while Hester is shamed by having a baby as tangible evidence of her sin and shame, the responsibility of caring for Pearl and raising her with love and wisdom serves to calm the defiant, destructive passion of Hester's nature and to save her from its wild, desperate promptings. This sentiment is poignantly portrayed in Hester's visit to the Governor's mansion. While there, she pleads with the Governor, magistrates, and ministers that she be allowed to keep Pearl, exclaiming, 'She is my happiness!--She is my torture, none the less! Pearl keeps me here in life! Pearl punishes me too! See ye not, she is the scarlet letter, only... ...er to overcome the passion, once so wild that had brought her to ruin and shame." (Hawthorne, 165) It was Hester's motherly sentiments to nurture and love her child that saved her from temptation and from death and opened her heart to the poor and needy around her. It was the torturous fixation of her child upon her shame that tempered and refined her character and led her toward the precious virtue of being true to herself and others. And it was the reflection of her own character, even at Its worst, in her child that brought Hester to a greater understanding of herself and a desire to build a better life for Pearl. Pearl was more than merely her mother's tormentor--she was her blessing, her life, and the giver of the freedom to live a life true to herself and to her God. Works Cited Hawthorne, Nathaniel. The Scarlet Letter. New York: Bantam Books, 1989.

Physician-Assisted Suicide Essays -- Medicine Medical Death Papers

Physician-Assisted Suicide In today's society, a very controversial issue is physician-assisted suicide for terminally ill patients. Many people feel that it is wrong for people, regardless of their health situation, to ask their doctor or attendant to end their life. Others feel it is their right to be able to choose how and when they die. When a doctor is asked to help a patient to their death, they have certain responsibilities that come along with it. Among these duties, they must prove valid information as to the terminal illness the patient is suffering. They also must educate the patient as to what their final options may be. When they make the decision of whether or not to help the patient into death, and should they accept responsibility, they must provide the lethal dose of medicines that will end the life of the patient. For those, myself included, who believe physician-assisted suicide should be their choice, we feel it should be legalized because: they don't want to go through the suffering caused by the illness they have. They fear the loss of their independence because they feel they become a burden to their family or friends. On the other hand those opposed to the issue of assisted suicide feel it goes against religious beliefs and common medical ethics. They also believe that there is always the possibility that a miracle will occur and the patient will overcome the illness and also that the doctor could have provided the wrong diagnosis to the patient initially. The strongest reason against physician-assisted suicide has been the idea that if assisted suicide becomes legal, it will get out of hand and target certain people in society, such as those with disabilities. In 1990, physician-assi... ...you, unless you become a patient. With the freedoms offered to us, we should not even have to ask a doctor for permission about suicide. People should be allowed to decide their fate, just as they can decide whether to drive or walk to the grocery store. This should be the case, especially for terminally ill patients who are greatly affected by a disease. The writer feels that life is something that is valuable, even when people can't move around themselves, or can't do all things for themselves. Life isn't just something that everyone inherits. People were given life for a reason, and whether that reason is to work through a terminal illness or to make it through life without any health problems, nobody should be able to choose their time of death. Someone who fights through a terminal illness dies with more dignity than someone who takes the easy way out does. Physician-Assisted Suicide Essays -- Medicine Medical Death Papers Physician-Assisted Suicide In today's society, a very controversial issue is physician-assisted suicide for terminally ill patients. Many people feel that it is wrong for people, regardless of their health situation, to ask their doctor or attendant to end their life. Others feel it is their right to be able to choose how and when they die. When a doctor is asked to help a patient to their death, they have certain responsibilities that come along with it. Among these duties, they must prove valid information as to the terminal illness the patient is suffering. They also must educate the patient as to what their final options may be. When they make the decision of whether or not to help the patient into death, and should they accept responsibility, they must provide the lethal dose of medicines that will end the life of the patient. For those, myself included, who believe physician-assisted suicide should be their choice, we feel it should be legalized because: they don't want to go through the suffering caused by the illness they have. They fear the loss of their independence because they feel they become a burden to their family or friends. On the other hand those opposed to the issue of assisted suicide feel it goes against religious beliefs and common medical ethics. They also believe that there is always the possibility that a miracle will occur and the patient will overcome the illness and also that the doctor could have provided the wrong diagnosis to the patient initially. The strongest reason against physician-assisted suicide has been the idea that if assisted suicide becomes legal, it will get out of hand and target certain people in society, such as those with disabilities. In 1990, physician-assi... ...you, unless you become a patient. With the freedoms offered to us, we should not even have to ask a doctor for permission about suicide. People should be allowed to decide their fate, just as they can decide whether to drive or walk to the grocery store. This should be the case, especially for terminally ill patients who are greatly affected by a disease. The writer feels that life is something that is valuable, even when people can't move around themselves, or can't do all things for themselves. Life isn't just something that everyone inherits. People were given life for a reason, and whether that reason is to work through a terminal illness or to make it through life without any health problems, nobody should be able to choose their time of death. Someone who fights through a terminal illness dies with more dignity than someone who takes the easy way out does.

12 Years a Slave Essay

The plot of the book Twelve Years A Slave is the reflection of the author's own life experience. The uniqueness of Northup’s book lies in the fact that unlike other slave narrated books; a man who was born free wrote this novel. All other slave narrators had been born into slavery. Dedicated to Harriet Beecher Stowe and introduced as â€Å"Another Key to Uncle Tom's Cabin,† Northup's book was published in 1853, less than a year after his liberation.The significance of Northup’s experiences of being a slave described in the book is hard to deny. People who read this book can virtually see the world through the eyes of a person that got locked away into a cage of slavery, a person that was cut off from society and normal life of a free man. Can we possibly imagine how this person must have felt like? We should not doubt what Solomon Northup went through when he found himself in a situation when he was not free anymore.It is obvious that the whole story and the port rayal of slavery acquires an entirely different perspective than if it had been written by a narrator who was born into slavery and passed through stages of his childhood and adolescence wearing a stamp of being someone's property. The most harrowing moment from Northup’s brilliant and painful Twelve Years A Slave is when slave master, Edwin Epps, is questioning his slave girl and mistress, Patsy, about her whereabouts the previous afternoon.When Patsy returns, she reveals that she was at a neighbor’s plantation, trying to get a bar of soap, but he refuses to listen. Epps does not believe her and orders her undressed, tied to a tree and beaten. Epps forces Platt to whip her repeatedly, but becomes frustrated, snatches the whip and whales on her himself. In my opinion, this was the most touching; yet disturbing section of the book. I cannot imagine how devastated Platt felt having to whip his best friend and then watch helplessly as she suffered.Because it was so violen t and graphic it was almost impossible for me to read this section of the novel. Northup trusted that Armsby would mail a letter to Northup's family for him, but instead Armsby told Epps about Northup’s letter so that he could get him into trouble. Obviously Armsby did not have the intention of helping Northup and he was trying to cajole Epps. He is described as a man who came to the plantation looking to fill the position of overseer but was reduced to labor with the slaves.In an effort to better his role on the plantation, he revealed Northup's secret to Epps. Instead of giving the letter to Armsby, Northup should have mailed the letter himself. By mailing it himself, he could assure that no one would find out about the letter and he would not have had to suffer through ten years of enslavement. He would have had to have someone cover for him, however, this would not be as bad as having Epps find out, knowing how harsh the consequences would be.Northup is first sold to the infamous Washington-based slave trader James H.Burch, who brutally whips him for protesting that he is a free man. He is purchased by a fair-minded but feeble master named Ford. Northup writes that there never was a kinder, candid, Christian man. Northup is then sold in the winter of 1842 to John Tibeats, a quick-tempered carpenter to whom Ford had become indebted. Unlike Ford, Tibeats was never satisfied and he worked his slaves from earliest dawn until late at night. Lastly, Tibeats sells Northup to Edwin Epps, a repulsive and coarse cotton planter whom Northup describes as lacking any redeeming qualities.Religion appears in 12 Years a Slave in its conservative theme as an eloquent technology that slave owners use to persuade their slaves to be obedient. We see Epps, for instance, preaching to his slaves and verbally underlining a Bible verse emphasizing weakness. This scene also portrays the limitations of this analysis by showing the disconnect between discourse and power. The s laves are not moved to serve by Epps’s readings, but by practice of physical and psychological violence.Race and religion merge to become a highly effective mechanism for solidifying dignity by asserting the corruptness of outside bodies. A reader will obtain some sense of what it meant to be owned by another human being, what it meant to be considered a piece of property that could be bought and sold, an object whose sole purpose and function was to make life more comfortable for the master and his family. Readers will also be able to gain insight into the fact that despite the general cruelty, black people consciously struggled to maintain their dignity, humanity, and their moral and cultural integrity.The book of Solomon Northup gave me a chance to go beyond what we learn in history books, taking me into the human story of slavery. Our country is founded on a system of institutional racism, and slavery is among the strongest examples of this reality. This is a hard truth t o accept while at the same time enjoying the freedoms our country offers. 12 Years a Slave showed me human dignity and beauty in the face of extreme oppression. That story of slavery, not the stories of land ownership and wealth, should become the narrative of what our country stands for.

What ideas on materialism emerge from Mrs Faust Essays

What ideas on materialism emerge from Mrs Faust Essays What ideas on materialism emerge from Mrs Faust Paper What ideas on materialism emerge from Mrs Faust Paper this links cause he uses his money to buy pleasure from other sources (prostitution). In the ninth stanza of Mrs. Faust she says she spun gold from hay, had a facilitate, had my breasts enlarged, my buttocks tightened. This Is showing more materialistic values Decease seen uses all near money not Tort good or to Nell anyone In need out to simply make herself look and feel better. Then in the penultimate stanza she shows us Just how much material wealth she and Faust had between them the yacht, the several homes, the Lear Jet, the helipad, the loot et get. This links the two points together in that the Faustus had so much material wealth and yet some people in this world cannot afford a loaf of bread. Therefore, Duffy is showing us that the couple did not care about the consequences if it made them obscenely rich. In the thirteenth stanza she is describing to the reader how the devil came to take Faust away, At this I heard a serpents hiss, tasted evil, knew its smell, as scaly devil hands poked up right through the terracotta tiles at Faustus bare feet. She was describing how the devil, a preternatural being, was taking her love away and the only thing she could think about was the damage that might be caused to her terracotta tiles. I think this portrays how much she cared about Faust compared to her Materialistic wealth because instead of talking about her love being taken by the devil she instead comments on her terracotta tiles (material wealth) being damaged by the devil. In the Final Stanza she talks about when she got ill, When I got Ill, it hurt like hell. I bought a kidney with my credit card, and then I got well. Faust is in hell and there are people wing with no hope of getting an organ transplant and Mrs. Faust simply bought a spare organ with her Credit Card. This shows us that she takes for granted being rich and does not care that in order for her to live in such luxury she had to give up her husbands life. To conclude, Mrs. Faust does not care at all for her husbands life if it makes her rich and these values also occur in Mrs. Midas because Mrs. Midas in the end did not care for her Husband but was simply angry at him for being emotionless towards her. She then took all the gold from the house anyway and used it to make her own life better.

How to Make a Phosphate Buffer Solution

How to Make a Phosphate Buffer Solution The goal of a buffer solution is to help maintain a stable pH when a small amount of acid or base is introduced into a solution. A phosphate buffer solution is a handy buffer to have around, especially for biological applications. Because phosphoric acid has multiple dissociation constants, you can prepare phosphate buffers near any of the three pHs, which are at 2.15, 6.86, and 12.32. The buffer is most commonly prepared at pH 7 using monosodium phosphate and its conjugate base, disodium phosphate. Phosphate Buffer Materials Monosodium phosphateDisodium phosphateWaterPhosphoric acid to make the pH more acidic or sodium hydroxide to make the pH more alkalinepH meterGlasswareHot plate with stirring bar Prepare the Phosphate Buffer Decide on the concentration of the buffer. Most buffers are used at a concentration between 0.1 M and 10 M. If you make up a concentrated buffer solution, you can dilute it as needed.​Decide on the pH for your buffer. This pH should be within one pH unit from the pKa of the acid/conjugate base. So, you can prepare a buffer at pH 2 or pH 7, for example, but pH 9 would be pushing it.Use the Henderson-Hasselbach equation to calculate how much acid and base you need. You can simplify the calculation if you make 1 liter of buffer. Select the pKa value that is closest to the pH of your buffer. For example, if you want the pH of your buffer to be 7, then use the pKa of 6.9: pH pKa log ([Base]/[Acid])ratio of [Base]/[Acid] 1.096The molarity of the buffer is the sum of the molarities of the acid and conjugate base or the sum of [Acid] [Base]. For a 1 M buffer (selected to make the calculation easy), [Acid] [Base] 1.[Base] 1 - [Acid].Substitute this into the ratio and solve:[Base ] 0.523 moles/L.Now solve for [Acid]: [Base] 1 - [Acid], so [Acid] 0.477 moles/L. Prepare the solution by mixing 0.477 moles of monosodium phosphate and 0.523 moles of disodium phosphate in a little less than a liter of water.Check the pH using a pH meter and adjust the pH as necessary using phosphoric acid or sodium hydroxide.Once you have reached the desired pH, add water to bring the total volume of phosphoric acid buffer to 1 L.If you prepared this buffer as a stock solution, you can dilute it to make up buffers at other concentrations, such as 0.5 M or 0.1 M. Advantages and Disadvantages of Phosphate Buffers The two key advantages of phosphate buffers are that phosphate is highly soluble in water and that it has an extremely high buffering capacity. However, these may be offset by certain disadvantages in some situations. Phosphates inhibit enzymatic reactions.Phosphate precipitates in ethanol, so it cant be used in preparations to precipitate DNA or RNA.Phosphates sequester divalent cations (e.g., Ca2 and Mg2).

Free Essays on The African Slave Trade

The course of human history is marked by terable crimes. How was it possible? How could it have gone on for so long, and on such a scale? A tragedy of such dimensions has no similar effects in any other part of the world. Here is how it became. The African continent was stripped of its human resources by all possible routes. Across the Sahara, through the Red Sea, from the Indian Ocean ports and across the Atlantic. At least ten centuries of slavery for the benefit of the Muslim countries. Then more than four centuries of a regular slave trade to build the Americas and the prosperity of the Christian states of Europe. Four million slaves exported via the Red Sea, another four million through the Swahili ports of the Indian Ocean, possibly as many as nine million along the trans-Saharan caravan route, and eleven to twenty across the Atlantic Ocean (1). Of all these slave routes, the "slave trade" in its purest form, i.e. the European Atlantic trade, attracts most attention and gives rise to most debate. The Atlantic trade is the least poorly documented to date, but this is not the only reason. More significantly, it was directed at Africans only, whereas the Muslim countries enslaved both Blacks and Whites. And it was the f orm of slavery that indisputably contributed most to the present situation of Africa. It permanently weakened the continent, led to its colonisation by the Europeans in the nineteenth century, and engendered the racism and contempt from which Africans still suffer. While specialists squabble about the details, the basic questions raised by the enslavement of the Africans have scarcely varied since the eighteenth century, when the issue first became the subject of public debate as the result of the efforts of abolitionists in the Northern slave states, the demands of black intellectuals, and the unremitting struggle of the slaves themselves. Why the Africans rather than other peoples? Who exactly should be held re... Free Essays on The African Slave Trade Free Essays on The African Slave Trade The course of human history is marked by terable crimes. How was it possible? How could it have gone on for so long, and on such a scale? A tragedy of such dimensions has no similar effects in any other part of the world. Here is how it became. The African continent was stripped of its human resources by all possible routes. Across the Sahara, through the Red Sea, from the Indian Ocean ports and across the Atlantic. At least ten centuries of slavery for the benefit of the Muslim countries. Then more than four centuries of a regular slave trade to build the Americas and the prosperity of the Christian states of Europe. Four million slaves exported via the Red Sea, another four million through the Swahili ports of the Indian Ocean, possibly as many as nine million along the trans-Saharan caravan route, and eleven to twenty across the Atlantic Ocean (1). Of all these slave routes, the "slave trade" in its purest form, i.e. the European Atlantic trade, attracts most attention and gives rise to most debate. The Atlantic trade is the least poorly documented to date, but this is not the only reason. More significantly, it was directed at Africans only, whereas the Muslim countries enslaved both Blacks and Whites. And it was the f orm of slavery that indisputably contributed most to the present situation of Africa. It permanently weakened the continent, led to its colonisation by the Europeans in the nineteenth century, and engendered the racism and contempt from which Africans still suffer. While specialists squabble about the details, the basic questions raised by the enslavement of the Africans have scarcely varied since the eighteenth century, when the issue first became the subject of public debate as the result of the efforts of abolitionists in the Northern slave states, the demands of black intellectuals, and the unremitting struggle of the slaves themselves. Why the Africans rather than other peoples? Who exactly should be held re...

Reflection paper 2 Essay Example | Topics and Well Written Essays - 500 words

Reflection paper 2 - Essay Example According to Marx, the proletariat represents the real revolutionary body free of conservatism, which developed and led to an open revolution, which withdrew the bourgeoisie. Marx asserts that the bourgeoisie attributed to the modern industry development produces its own destroyers and this leads to the inevitable success of the proletariat (Karl and Engels, 34). In relation to the communist manifesto, Marx asserts that the association between the proletariats’ labour and the bourgeoisie’s property ownership should be changed such that the right to own property can be transformed into another level of social class whose class character is eliminated. This implies that the communist policy requires that the labour will only exist to benefit the labourers in the society. According to Marx, the bourgeois stand against the communist ideology because of its intend and power to limit their freedom and more importantly remove the policy of private property. However, the communist policy dissented by voices, which argue that no need of working of private property is abolished (Karl and Engels, 69) On equal measure, other dissenters argue that communism will eventually annihilate intellectual products. This is not true, only that it reflects the bourgeois misperception. Marx affirms that the communist revolution is a sweeping rupture in the conventional property associations, which is attributed to the fundamental changes in the conventional ideologies. According to Marx, the revolution represented by the working class intends to make the proletariat the ruling class. This follows that the proletariat class will use its political supremacy to confiscate all the monetary gains from the bourgeoisie. Next, the proletariat will centralize the requisite tools of production to be directly controlled by the State. This will only be

Education policy in USA Term Paper Example | Topics and Well Written Essays - 1500 words

Education policy in USA - Term Paper Example It has often been argued that education policies adopted by USA have not been as effective as expected during the planning phase owing to the persistence of several problems. One of the critical issues in the educational policy of USA can be identified as the lack of adequate number of teachers as compared to the number of students. Consequently, there is unevenness in the student-teacher ratio that is affecting the education system of the country. Furthermore, it has been analyzed that the rise in tuition fees of the collages is also an important issue to be worth discussing in the education policy of USA. It has also been viewed that the graduation percentage of USA has been decreasing in the recent times, probably because of the rising high education prices. Evidently, the government has been concerned about such issues, and thus, USA today aims to be the best in providing education in the world and lead the world in terms of college graduates by the year 2020 assisting educationa l institutions and states with requisite funding in order to minimize financial burden on schools which in turn is expected to cut education expenses in the country (AASCU, â€Å"Top 10 Higher Education State Policy Issues for 2010† Policy Almanac, â€Å"Education†; Policy Insider, â€Å"U.S. Dept. of Education Continues Funding School Improvement Grants†). The issues mentioned above are quite significant in relation to the development of the education system of the country. For instance, less student-teacher ratio would mean that students could be able to learn more efficiently and increase their chances of success. It has also been viewed that the success or the development of the students largely depends on the teachers.... orld and lead the world in terms of college graduates by the year 2020 assisting educational institutions and states with requisite funding in order to minimize financial burden on schools which in turn is expected to cut education expenses in the country (AASCU, â€Å"Top 10 Higher Education State Policy Issues for 2010† Policy Almanac, â€Å"Education†; Policy Insider, â€Å"U.S. Dept. of Education Continues Funding School Improvement Grants†). Significance The issues mentioned above are quite significant in relation to the development of the education system of the country. For instance, less student-teacher ratio would mean that students could be able to learn more efficiently and increase their chances of success. It has also been viewed that the success or the development of the students largely depends on the teachers. Additionally, the issue of rise in tuition fees has also affected the higher education in USA by a significant extent, especially among the low-income group and middle-income group students. Although the government has been allocating requisite funding to the schools, the occurrence of recent financial turmoil as well as the recessionary conditions in the economy can be identified to have widened the issue of rising education costs in USA. Hence, as education acts as a backbone of societal development, USA needs to intervene and solve such issues as failure to do so would de-motivate people from pursuing higher education courses and thus hampering the overall progress of the society on the whole (AASCU, â€Å"Top 10 Higher Education State Policy Issues for 2010†; Hopkins, â€Å"Colleges with the Lowest Student-Faculty Ratios†). Future Prospects It has been observed that the performance of the education policy of USA in the recent years has not been

Should i buy or should i rent Essay Example | Topics and Well Written Essays - 3000 words

Should i buy or should i rent - Essay Example Therefore, the main objective of monetary theory analysis is to understand how to analyze and communicate findings of various investment projects. Consequently, this essay discusses the process project evaluation, techniques of evaluation, theory of interest rate, real situation of mortgage business in United Kingdom specifically the interest rates and other important figures. In the end I attempt to answer a question on whether to buy a home or rent a house. I use the conventional methods of evaluating new ventures to arrive at a decision of buying a house. Capital investments involve spending money on assets that are used to make the business operational. These monies go into meeting the demands of the project. Such demands include wages, utilities costs, land, rent and equipment. This often require colossal amount of startup capital which may be borrowed, raised through equity or saved from earnings. Since money is an important limited resource, the decision to invest on a project must be backed by evidence of profitability and cost benefit analysis. It is important to note that most capital investment are long term and good choice of project is critical. Besides, other factors like amount of capital which eventually determines the type of project must also be considered. Attention should also be given to risk associated with the business and the payback time, whether long term or short term. It is important to note that the question about best investment choices has no straight forward answer. In other words there is no guarantee that the best investment analyst will advise precisely on the future prospect of the project. It all depends on both macro and micro economic factors prevailing at the moment. Therefore, it the duty of the investor to evaluate the cost and benefits associated with the project. Although it is not easy to pinpoint a specific way to deal with this challenge, various methods of determining project viability are available. The two most commonly used techniques are net present value (NPV) and internal rate of return (IRR). These techniques involves finding out the projected cash flows and costs. Nevertheless, the net present value is considered superior to internal rate of return because in some instances a high yield rate does not mean the business is profitable. Internal return rate is based on already determined discount rate which may be not be accurate (Gaylon and Philip 2003). The net present value indicates the value of the business today. It takes into consideration all cash flows and the duration values. These include the initial startup capital and future incomes. The inflows are assigned positive values while outflows are given negative values. For instance if the initial outlay is ? 100,000, this will be considered negative when computing net cash inflow. This because this money has been used to finance the project operation and is not part of income earned from the project. When all these values are co mbined, the result gives the net value of the project. In cases where the investor can establish the amount of money flowing in or out at specific fixed time, the money is treated as rate of cash flow. For instance, a landlord who collect ? 3,000 from rents, has a rate of cash inflow rather than cash inflow. The net cash flow ct at specific time = cash inflows at time t – cash outflows at time t The net rate of cash flows in unit time = net

Opera in the U.S. by American composers Essay Example | Topics and Well Written Essays - 1500 words

Opera in the U.S. by American composers - Essay Example Opera in the U.S. by American composers Answering the question that many people have not been able to answer since the 1960’s, Opera in the United States of America supports performance and creation of new works by American composers especially those from the northern side. OPERA America’s online education core, which is the learning centre, features information, which not only focuses on frequent operas but also houses an inventory that has proven to grow of composers from north America as well as their operas for use by opera lovers, artists and administrators. Therefore, Opera finds synopses, biographies of librettists and composers, historical essays and other research as well as other multimedia excerpts. Jazz composers for example, which happens to be the genre subject in this paper, started way back in the 1960’s and up to date the composers still rely on Opera for research work. In the Opera, there is the voice workshop and the composers’ series, w hich is a competitive biannual fellowship, offered to composers especially those of jazz and composer/librettist teams (Gilbert& Chase, 26). The notion behind fallacies as outlined by major philosophers asserts that in order to be a rational thinkers and composers, then one should avoid the illogicality in fallacies and carry out an examination to gauge one’s level of thinking. While composing, development for Rational Persons involves Viewing Development in Stages; the composer tries to explain the basic concepts that would help in becoming a rational jazz composer. Librettists like mark Campbell places in the mind of the audience stages of evaluation through which one can become a more rational thinker. While at Opera and in stage one, composers assert that it is of primary importance to accept that since humans are always working towards being more rational thinkers, we should accept that shortcoming characteristic of humans and work towards better realization of relevant thinking. The second stage helps composers realize that unless they accept to being irrelevant thinkers, only then can they proceed to being rational thinkers. Stage 3 asserts that composers first question the belief of their reasoning before actually bringing it out to other people. When a composer gets to this stage, then he or she can be referred to as ‘beginning thinkers’. In the fourth stage, a composer is able to have a clearly defined outline of his or her thinking formula. One is able to have an organized line of thought even in arguments. According to Opera, There are 4 different kinds of fallacies. I. Non sequitur is the form of thinking where the composition may be right or wrong, but the premise from which the conclusion is born does not have clear outlay. II. Faulty analogy asserts some level of irrelevance during composition. For instance, if B has content, same as V and V has same composition as Q; simply assuming that therefore B and Q have same properti es without founded conclusive finding is irrelevant and illogical. III. Hasty generalization: in this form of fallacy, a composer simply draws conclusion based only insufficient evidence. If in a list of 12 people, 10 have passed in an exam, simply assuming that the remaining two also have passed in an exam holds no ground for a sufficient conclusion. IV. Equivocation simply implies the

TOPIC NO 9 Essay Example | Topics and Well Written Essays - 2750 words

TOPIC NO 9 - Essay Example Factors such as culture and history are not included in the Porter’s five forces industry analysis. Because of this, the model is seen as inadequate as an environmental assessment tool. Moreover, the forces behind the model are grounded on the premise of constant returns to scale by Alfred Marshall in his ‘theory of production.’ This paper aims to discuss the changes, such as increasing returns to scale and their effect on the intensity of the forces. Factors such as culture and history and their effect on the forces are also explored. When constant returns to scale is a vital premise where Michael Porter has derived his Five Forces of the industry model, it mainly based on Alfred Marshall’s theory of production. According to Marshall’s theory of production, for a certain increase in the level of all inputs, the output will increase by the same proportion (ILSTU.edu 2009). This has been identified as the constant returns to scale. The concept of constant returns to scale has been the traditional assumption as regards the theory of production. However, changes in our times state that the concept of constant returns to scale is not always the case for production. As firms strive to build production competitive advantage in order to lead the competition, they strive to produce more outputs for a given increase in the level of the inputs, hence increasing returns to scale. As stated in Porter’s five forces: â€Å"In the traditional economic model, competition among rival firms drives profits to zero. But competition is not perfect and firms are not unsophisticated passive price takers. Rather, firms strive for a competitive advantage over their rivals. The intensity of rivalry among firms varies across industries, and strategic analysts are interested in these differences (AUEB.gr).† â€Å"[†¦] unique industry characteristics that define the industry.

Opera in the U.S. by American composers Essay Example | Topics and Well Written Essays - 1500 words

Opera in the U.S. by American composers - Essay Example Opera in the U.S. by American composers Answering the question that many people have not been able to answer since the 1960’s, Opera in the United States of America supports performance and creation of new works by American composers especially those from the northern side. OPERA America’s online education core, which is the learning centre, features information, which not only focuses on frequent operas but also houses an inventory that has proven to grow of composers from north America as well as their operas for use by opera lovers, artists and administrators. Therefore, Opera finds synopses, biographies of librettists and composers, historical essays and other research as well as other multimedia excerpts. Jazz composers for example, which happens to be the genre subject in this paper, started way back in the 1960’s and up to date the composers still rely on Opera for research work. In the Opera, there is the voice workshop and the composers’ series, w hich is a competitive biannual fellowship, offered to composers especially those of jazz and composer/librettist teams (Gilbert& Chase, 26). The notion behind fallacies as outlined by major philosophers asserts that in order to be a rational thinkers and composers, then one should avoid the illogicality in fallacies and carry out an examination to gauge one’s level of thinking. While composing, development for Rational Persons involves Viewing Development in Stages; the composer tries to explain the basic concepts that would help in becoming a rational jazz composer. Librettists like mark Campbell places in the mind of the audience stages of evaluation through which one can become a more rational thinker. While at Opera and in stage one, composers assert that it is of primary importance to accept that since humans are always working towards being more rational thinkers, we should accept that shortcoming characteristic of humans and work towards better realization of relevant thinking. The second stage helps composers realize that unless they accept to being irrelevant thinkers, only then can they proceed to being rational thinkers. Stage 3 asserts that composers first question the belief of their reasoning before actually bringing it out to other people. When a composer gets to this stage, then he or she can be referred to as ‘beginning thinkers’. In the fourth stage, a composer is able to have a clearly defined outline of his or her thinking formula. One is able to have an organized line of thought even in arguments. According to Opera, There are 4 different kinds of fallacies. I. Non sequitur is the form of thinking where the composition may be right or wrong, but the premise from which the conclusion is born does not have clear outlay. II. Faulty analogy asserts some level of irrelevance during composition. For instance, if B has content, same as V and V has same composition as Q; simply assuming that therefore B and Q have same properti es without founded conclusive finding is irrelevant and illogical. III. Hasty generalization: in this form of fallacy, a composer simply draws conclusion based only insufficient evidence. If in a list of 12 people, 10 have passed in an exam, simply assuming that the remaining two also have passed in an exam holds no ground for a sufficient conclusion. IV. Equivocation simply implies the

#3 Essay Example | Topics and Well Written Essays - 500 words

#3 - Essay Example Drugs addicts have continued to increase as the drugs are cheap. The illegalization of these drugs has not helped in reducing the criminals and several people including the chief police in Britain have opted for the decriminalization of these drugs in a bid to stop the drugs circulating in the streets of continuing to increase the number of drug addicts. The research recommendations are that the country should look for other options to help the users of drugs as taking them to jail is not the solution. Some of the alternatives provided in the article include: community health and addiction treatment. I agree with the researchers and other opposes of criminalization of drug users and abusers. This has been the only solution in almost all the nations of the world facing drug problems but nothing has stopped the increase in drugs in the streets and the number of drug users. It is time to seek alternative solutions which will make those dealing with drugs stop doing so and transform on their own accord. Examples should be drawn from other decriminalization issues where once a law is passed on decriminalization, the previously illegal activity ceases on its own accord and I strongly believe this will be the same with the drug issue. The news clip was reliable because it came from published research in a peer reviewed medical journal that is renowned and valid. This therefore means that the research was also valid and hence reliable. The news article is printed in the BBC website. BBC is one of the oldest form of media communication and has reached this far due to the reliability of the information they publish hence making this news article reliable as well. Lastly is the fact that the information in discussion is nothing new but a reiteration of what is truly happening in the society. It is evident that drugs have increased and various reports confirm that and issues of

Foraging and Nutritional Ecology of Primates in SE Asia Essay Example for Free

Foraging and Nutritional Ecology of Primates in SE Asia Essay There are foods of various kinds that fit the foraging and nutritional needs of primates in SE Asia, these primates in question use the foods to extract carbohydrates, proteins, vitamins, fats and minerals. We look at the impact of the environment on these primates for there foraging and nutritional needs. We also observe systematics, their distribution, their genetics, their anatomy, their physiology, their ecology and conservation. Some of these primates, to observe and study are wood antelope and fossarial leaf rat. Availability of the plant species and their evolutionary history comes in and also cell theory is also looked at, fossil history is also looked at to some extent, and the whole work becomes interesting (Balee, 1998, 25) The foraging needs as well as the nutritional needs of primates are much varied due to the special needs of that particular primate. In most cases they need food to provide them with energy for growth, reproduction, movement and even at rest (the basal metabolic rate). Once the food is ingested it travels inside the body of the organism or in this case the primate and once assimilated into the blood stream it passes through a process called respiration and the energy needed for the body is obtained, Normally, when the primates are still as infants, energy is really needed for their growth and development and as they mature their energy requirement tend to increase and thus the need for more food (Balee, 1998, p. 68) As for the wood antelope and the fossarial leaf rat they normally have a special kind of bacteria in their guts, which helps to digest cellulose. This is because all the types of food the rely on have cellulose as one of the components and since other components are digestible, cellulose is not digestible and so the work of this special kind of bacteria comes in. The wood antelope feeds on the grasses, shrubs and bushes, which contain cellulose, and the fossarial leaf rat feeds mostly, if not exclusively on leaves of certain trees, bushes and shrubs and so they also contain cellulose. So this particular bacteria plays a very important role in the lives of these primates (Govbson, et el, 1998, p. 100) The extraction of carbohydrates, vitamins, fats, proteins and minerals normally occur through some other body metabolisms, which also play a very important role in the growth and energy requirements of these primates. The extracts are also used in the bone formation, in this case proteins are used for this purpose and the minerals and vitamins are used for important functions in the bodies of the organisms (Leyh, 2007,p. 150) In any ecological systems there is competition among organisms for space mates and food. All these things that they compete for depend in one or another with the energy available. For instance, if an organism is to get an adequate space for himself, the organism has to fight for it and unless he is strong enough, it cannot be easy for him to get it. It is more of the survival for the fittest and death for the unfit. Only the fittest is this case can survive. When it comes to competition for mates this one also depends with the idea of having enough energy for mating with as many mates as possible for the male, and having enough energy of bearing the pregnancy and being able to deliver in the case of the female. It is also another case of survival for the fittest Another thing that these primates, especially of the same species must have enough and adequate food for them, those who are capable of getting food survive, while those who do not get die. This is also another good example of survival for the fittest and death for the unfit. Charles Darwin first put this forward in his theory of evolution of species (Kenzey, 1997,p. 15) Migration of the primates in question is one important area to look at. For an organism to migrate like in this case the wood antelope must ensure that they have eaten enough food because of the long distance, which may be required to be covered. Migration normally occurs due to climatic changes, which may lead to scarcity of food, mates and poor or harsh environmental condition as such the organism is forced to migrate and look for a more favorable place to start life a fresh. (Balee, 1998,p. 250) In this case, migration does not make it possible for the primates to start eating different foods, what happens is that they go at a place with similar foods and nutritional needs which suits them. If this idea of starting to eat different foods could be true then it would have been brought through evolution. The primates in question would have evolved a natural mechanism of adapting to different forages and nutritional needs; and it is the only known ways for the different mechanism to have been possible. This idea of evolution is very important in many ways, the first and most important case is this of the availability of the plant species, which provide food for the primates. Another is the cell theory, which gives room for the availability of certain organelles necessary for the type of environmental or ecological situations in which these primates in question find themselves (Caro, 1998,p. 341) These primates have therefore adapted certain special ways through which they use to survive in their environments. One important thing is that they have sight. This importance of sight comes handy to see their food or forages. And also being able to spot their enemies. The adaptation is evolutionary connected; and the nutritive values of the forages of these primates go together with evolution. The influence of forages availability on the primates in question, on their sociality and reproduction is another crucial factor to consider. The fact that these forages are available within the environment of these primates shows that, they are influenced a great deal on their sociality and reproduction. In the first place the population of rats tend to be higher than that of antelopes, because of some factors, which we can consider, for one the rats are smaller in size and thus can occupy a smaller space with just a very large population of them. And secondly their evolutionary mechanism suits them to be many in number than the antelopes. These antelopes consume more food and therefore are naturally fewer in number. Therefore food is a limiting factor in the population of these primates in question (Campbell, 1995,p. 120) Therefore in studying the population of these primates in question the factor of availability of forages is very important in deed. It determines the reproductive tendencies and also their presence in a given environment. Their daily habits are also affected. Their natural anatomy and physiology evolve according to available forages. This factor should always be put into consideration when dealing with systematics of these primates, if one is to be on the safe side (Caro, 1998,p. 350) Apart from the availability of forages for the nutritional needs of these primates one must also consider a depth the evolutionary tendencies. These primates have body structures suitably adapted for their functions. For instance, they have legs, which help them to run, from their enemies or rather predators, and also these legs help them to reach their foods in good time. (Caro, 1998,p. 50) The nature of their energy requirements is such that they function up to the time when they are required to rest, this is where the Basal Metabolic Rate (BMR) comes in. The bodies of these primates function such that they must relax or have a rest. This is usually at right. It is common at night. As rest remains necessary and so is the regulation of the available food. The leaves are given time and room to grow and mature again. When the food becomes abundant, these primates tend to increase their population, which leads to a very high competition for food, and so there are those who die in the process especially when food becomes scarce (Campbell, 1995,p120) The food available to these primates is also connected to their evolutionary tendencies. One will find that always there will be certain kind of trees shrubs or bushes where certain primates are found. In this case, some species of trees, which tend to produce leaves in plenty, will found where certain primates are found. This is important because it contributes to the importance of the food chain. As such certain animals will also be found there in plenty especially in this case, those animals which feed on wood antelopes like the lions, cheetahs and leopards will always be found in these environments. The case is the same with those who feed on fossarial leaf rats. (Gouldey, 2007, 200) As such the foraging and nutritional ecology of primate in South East Asia recently important and complex as it looks. The fossils found in some places always have evolutionary connections with some primates . The fossarial leaf rats have some bearing of connectivity with the domesticated rats and some animals of lower form. As for the wood antelopes they show some similarities with some animals of both lower form and higher form. The analyzed cases are very important as they contribute a lot of information to those who study the fossils; and the whole field of study becomes interesting. This clearly shows that the evolutionary connection of fossils and the organisms in question is true and reliable. The primates then must have evolved in a special way, where they have teeth for chewing their food or forages; their elementary canals are also highly specialized in performing their functions. Mammologists should come up with better methods of studying the organisms in question, since there is a lot to show and inform those who are interested. In the case of the organelles of the cells, when the energy requirement is high the cell tend to have a lot of mitochondria, which help in the respiration process. But all this is not important if the food is not available. Therefore the special way through which these primates have evolved with time to be where they are and eat what they eat shows a very interesting field of study(Caro, 1998,p. 400) As we consider more about these organisms, more information on theories should be properly compared and observed in the practicals so that the scientists or rather the mammologists should always compare with accurate and reliable information. The mammologists have always shown that the foraging and nutritional ecology of primates is an important field of study. As it provides us with some vital information concerning human beings, since human beings are also primates. Therefore the whole of these primates in question when properly studied, we tend to get some useful tips about us human beings (Balee, 1998,p. 650_. The nutritional needs of these primates may be varied with that of human beings, but they all belong in the same Kingdom and Phylum, as they have a lot of similarities than differences. These similarities are due to evolution. All the same, they play a very important role in the foraging habits of these primates, which are exclusively found in South East Asia. In this case it is important to note that energy and food are both important; one cannot be there without the other, in other words food is energy, and energy is food. The food chain of the primates in question in South East Asia goes on and these primates become healthy and thrive. Their habits are maintained and the value of food remains crucial. Finally, the foraging and nutritional ecology of primates in South East Asia is notably very interesting; therefore a lot of money should be invested in the continuous research in this spectacular part of the world. . Bibliography Balee, W (1998), Advance in Historical Ecology; Columbia University Press. New York Campbell, B (1995); Human Ecology; The Story of our place in Nature form Pre history to the present.Adline de Gruyter New York. Caro, T, (1998); Behavioral Ecology and conservation Biology; Oxford University Press; New York. Gouldey, M Mahar, I (2007) Floods of fortune; Ecology and Economy along the Amazon Columbia University. New York. Govbson, S, et el (1998); Ecology; Oxford University Press. New York Kinzey, G. W (1997); New World Primates Ecology, Education and Behavior. Aldine de Gryter. New York. Leyh Jr, G (2007); Tropical Forest Ecology. A view from Basso Colorado Island. Oxford University Press. New York.

Time dilation and length contraction

Time dilation and length contraction INTRODUCTION: Time dilation is a phenomenon (or two phenomena, as mentioned below) described by the theory of relativity. It can be illustrated by supposing that two observers are in motion relative to each other, and/or differently situated with regard to nearby gravitational masses. Length contraction, according to Hendrik Lorentz, is the physical phenomenon of a decrease in length detected by an observer in objects that travel at any non-zero velocity relative to that observer. This contraction (more formally called Lorentz contraction or Lorentz-Fitzgerald contraction) is usually only noticeable, however, at a substantial fraction of the speed of light; and the contraction is only in the direction parallel to the direction in which the observed body is travelling. SPECIAL RELATIVITY : When such quantities as length, time interval and mass are considered in elementary physics, no special point is made about how they are measured This theory has a wide range of consequences which have been experimentally verified, including counter-intuitive ones such as length contraction, time dilation and relativity of simultaneity, contradicting the classical notion that the duration of the time interval between two events is equal for all observers. (On the other hand, it introduces the space-time interval, which is invariant.) Combined with other laws of physics, the two postulates of special relativity predict the equivalence of matter and energy, as expressed in the mass-energy equivalence formula E=mc2, where c is the speed of light in a vacuum.The predictions of special relativity agree well with Newtonian mechanics in their common realm of applicability, specifically in experiments in which all velocities are small compared with the speed of light. Special relativity reve als that c is not just the velocity of a certain phenomenon-namely the propagation of electromagnetic radiation (light)-but rather a fundamental feature of the way space and time are unified as space time. One of the consequences of the theory is that it is impossible for any particle that has rest mass to be accelerated to the speed of light. POSTULATES OF SPECIAL RELATIVITY: TWO postulates are as follows : The law of physics are the same in all inertial frames of reference. The speed of light in free space has the same value in all inertial frame of reference. OVERVIEW OF TIME DILATION : Time dilation can arise from (1) relative velocity of motion between the observers, and (2) difference in their distance from gravitational mass. In the case that the observers are in relative uniform motion, and far away from any gravitational mass, the point of view of each will be that the others (moving) clock is ticking at a slower rate than the local clock. The faster the relative velocity, the more is the rate of time dilation. This case is sometimes called special relativistic time dilation. It is often interpreted as time slowing down for the other (moving) clock. But that is only true from the physical point of view of the local observer, and of others at relative rest (i.e. in the local observers frame of reference). The point of view of the other observer will be that again the local clock (this time the other clock) is correct, and it is the distant moving one that is slow. From a local perspective, time registered by clocks that are at rest with respect to the local frame of reference (and far from any gravitational mass) always appears to pass at the same rate. There is another case of time dilation, where both observers are differently situated in their distance from a significant gravitational mass, such as (for terrestrial observers) the Earth or the Sun. One may suppose for simplicity that the observers are at relative rest (which is not the case of two observers both rotating with the Earth an extra factor described below). In the simplified case, the general theory of relativity describes how, for both observers, the clock that is closer to the gravitational mass, i.e. deeper in its gravity well, appears to go slower than the clock that is more distant from the mass (or higher in altitude away from the center of the gravitational mass). That does not mean that the two observers fully agree: each still makes the local clock to be correct; the observer more distant from the mass (higher in altitude) makes the other clock (closer to the mass, lower in altitude) to be slower than the local correct rate, and the observer situated closer t o the mass (lower in altitude) makes the other clock (farther from the mass, higher in altitude) to be faster than the local correct rate. They agree at least that the clock nearer the mass is slower in rate, and on the ratio of the difference. This is gravitational time dilation. FORMULAE OF TIME DILATION AND LENGTH CONTRACTION: TIME DILATION: t0 is the proper time between events A and B for a slow-ticking observer within the gravitational field, tf is the coordinate time between events A and B for a fast-ticking observer at an arbitrarily large distance from the massive object (this assumes the fast-ticking observer is using Schwarzschild coordinates, a coordinate system where a clock at infinite distance from the massive sphere would tick at one second per second of coordinate time, while closer clocks would tick at less than that rate), G is the gravitational constant, M is the mass of the object creating the gravitational field, r is the radial coordinate of the observer (which is analogous to the classical distance from the center of the object, but is actually a Schwarzschild coordinate), c is the speed of light, and r0 = 2GM / c2 is the called the Schwarzschild Radius of M. If a mass collapses so that its surface lies at less than this radial coordinate (or in other words covers an area of less than 4pG2M2 / c4), then the object exists within a black hole. LENGTH CONTRACTION: This effect is negligible at everyday speeds, and can be ignored for all regular purposes. It is only when an object approaches greater speeds, that it becomes important. At a speed of 13,400,000 m/s, the length is 99.9% of the length at rest and at a speed of 42,300,000 m/s still 99%. As the magnitude of the velocity approaches the speed of light, the effect becomes dominant, as can be seen from the formula: Note that in this equation it is assumed that the object is parallel with its line of movement. Also note that for the observer in relative movement, the length of the object is measured by subtracting the simultaneously measured distances of both ends of the object. For more general conversions, see the Lorentz transformations. AN EXAMPLE OF TIME DILATION: A spaceship is flying a distance of 5lighthours, for example from Earth to the dwarf planet which Earth and Pluto are motionless. Formula used : t.. time indicated by the spaceship clock t.. time indicated by the clocks of the Earth-Pluto-system v.. speed of the spacecraft relatively to the system of Earth and Pluto c.. speed of light REMARKS: In a simplifying way there was assumed an inertial system in which Earth and Pluto are motionless; especially the motion around the Sun was neglected. According to an important result of the theory of relativity, an observer in the Earth-Pluto-system would see the spacecraft shortened in the direction of motion. This so-called Lorentz contraction was not taken into consideration in order to make it possible to read off the spaceships clock. BASIS IN RELATIVITY: The origin of length contraction in the special theory of relativity can be traced to the operational definitions of simultaneity and length.According to Milne and Bondi the following operational definitions are assigned to simultaneity and length: an observer moving uniformly along a straight line sends out a light signal at time t0 to a distant point (stationary according to the observer), where it arrives and is immediately reflected at time tr, arriving back at the observer at time ta. What time does the observer ascribe to the time of reflection tr, or, what event is simultaneous with the reflection? Let l be the distance to the point of reflection. An observer, with his or her definition of c,says it takes time l / c for light to reach the reflector. Because light travels at the same speed c in both directions, it takes the same time both ways, so it returns to the observer at time ta = t0 + 2 l / c, or in other words, the distance to the point of reflection is l = c ( ta t0 ) / 2, and the time at which reflection occurred is simultaneous with the clock registering ( t0 + ta ) / 2. With these operational definitions for determining length and simultaneous events, two observers in constant relative motion at velocity v are considered, and their time and length scales compared. The result of the above definitions is that time and length are connected by the Lorentz factor ?: PHYSICAL ORIGIN OF LENGTH CONTRACTION: Length contraction as a physical effect on bodies composed of atoms held together by electromagnetic forces was proposed independently by George FitzGeraldand by Hendrik Lorentz . The following quote from Joseph Larmor is indicative of the pre-relativity view of the effect as a consequence of James Clerk Maxwells electromagnetic theory: if the internal forces of a material system arise wholly from electromagnetic actions between the system of electrons which constitute the atoms, then the effect of imparting to a steady material system a uniform velocity of translation is to produce a uniform contraction of the system in the direction of motion, of amount (1-v2/c2)1/2 The extension of this specific result to a general result was (and is) considered ad hoc by many who prefer Einsteins deduction of it from the Principle of Relativity without reference to any physics.In other words, length contraction is an inevitable consequence of the postulates of special relativity. To gain a little physical insight on why length contractions occur, consider what those postulates involve: by requiring the speed of light (a quantity dependent on the fundamental properties of space and time) to be invariant in all frames of reference (including ones in motion) one can appreciate that it would require the distortion of the measures of length and time. Apparently Lorentz did not agree to the criticism that his proposal was ad hoc. the interpretation given by me and FitzGerald was not artificial. It was more so that it was the only possible one, and I added the comment that one arrives at the hypothesis if one extends to other forces what one could already say about the influence of a translation on electrostatic forces. Had I emphasized this more, the hypothesis would have created less of an impression of being invented ad hoc. (emphasis added) The Trouton-Rankine experiment in 1908 showed that length contraction of an object according to one frame, did not cause changes in the resistance of the object in its rest frame. This is in agreement with some current theories at the time (Special Relativity and Lorentz ether theory) but in disagreement with FitzGeralds ideas on length contraction. EXPERIMENTAL CONFIRMATION: Time dilation has been tested a number of times. The routine work carried on in particle accelerators since the 1950s, such as those at CERN, is a continuously running test of the time dilation of special relativity. The specific experiments include: Velocity time dilation tests Ives and Stilwell (1938, 1941), An experimental study of the rate of a moving clock, in two parts. The stated purpose of these experiments was to verify the time dilation effect, predicted by Lamor-Lorentz ether theory, due to motion through the ether using Einsteins suggestion that Doppler effect in canal rays would provide a suitable experiment. These experiments measured the Doppler shift of the radiation emitted from cathode rays, when viewed from directly in front and from directly behind. The high and low frequencies detected were not the classical values predicted. Rossi and Hall (1941) compared the population of cosmic-ray-produced muons at the top of a mountain to that observed at sea level. Although the travel time for the muons from the top of the mountain to the base is several muon half-lives, the muon sample at the base was only moderately reduced. This is explained by the time dilation attributed to their high speed relative to the experimenters. That is to say, the muons were decaying about 10 times slower than if they were at rest with respect to the experimenters. Hasselkamp, Mondry, and Scharmann(1979) measured the Doppler shift from a source moving at right angles to the line of sight (the transverse Doppler shift). The most general relationship between frequencies of the radiation from the moving sources is given by: as deduced by Einstein (1905). For phi = 90^circ(cosphi = 0,) this reduces to fdetected = frest?. Thus there is no transverse Doppler shift, and the lower frequency of the moving source can be attributed to the time dilation effect alone. Gravitational time dilation tests Pound, Rebka in 1959 measured the very slight gravitational red shift in the frequency of light emitted at a lower height, where Earths gravitational field is relatively more intense. The results were within 10% of the predictions of general relativity. Later Pound and Snider (in 1964) derived an even closer result of 1%. This effect is as predicted by gravitational time dilation. Velocity and gravitational time dilation combined-effect tests Hafele and Keating, in 1971, flew caesium atomic clocks east and west around the Earth in commercial airliners, to compare the elapsed time against that of a clock that remained at the US Naval Observatory. Two opposite effects came into play. The clocks were expected to age more quickly (show a larger elapsed time) than the reference clock, since they were in a higher (weaker) gravitational potential for most of the trip (c.f. Pound, Rebka). But also, contrastingly, the moving clocks were expected to age more slowly because of the speed of their travel. The gravitational effect was the larger, and the clocks suffered a net gain in elapsed time. To within experimental error, the net gain was consistent with the difference between the predicted gravitational gain and the predicted velocity time loss. In 2005, the National Physical Laboratory in the United Kingdom reported their limited replication of this experiment. The NPL experiment differed from the original in that the caesium cl ocks were sent on a shorter trip (London-Washington D.C. return), but the clocks were more accurate. The reported results are within 4% of the predictions of relativity. The Global Positioning System can be considered a continuously operating experiment in both special and general relativity. The in-orbit clocks are corrected for both special and general relativistic time dilation effects as described above, so that (as observed from the Earths surface) they run at the same rate as clocks on the surface of the Earth. In addition, but not directly time dilation related, general relativistic correction terms are built into the model of motion that the satellites broadcast to receivers uncorrected, these effects would result in an approximately 7-metre (23ft) oscillation in the pseudo-ranges measured by a receiver over a cycle of 12 hours. Muon lifetime A comparison of muon lifetimes at different speeds is possible. In the laboratory, slow muons are produced, and in the atmosphere very fast moving muons are introduced by cosmic rays. Taking the muon lifetime at rest as the laboratory value of 2.22  µs, the lifetime of a cosmic ray produced muon traveling at 98% of the speed of light is about five times longer, in agreement with observations. In this experiment the clock is the time taken by processes leading to muon decay, and these processes take place in the moving muon at its own clock rate, which is much slower than the laboratory clock. TIME DILATION AND SPACE FLIGHT: Time dilation would make it possible for passengers in a fast-moving vehicle to travel further into the future while aging very little, in that their great speed slows down the rate of passage of on-board time. That is, the ships clock (and according to relativity, any human travelling with it) shows less elapsed time than the clocks of observers on Earth. For sufficiently high speeds the effect is dramatic. For example, one year of travel might correspond to ten years at home. Indeed, a constant 1g acceleration would permit humans to travel as far as light has been able to travel since the big bang (some 13.7 billion light years) in one human lifetime. The space travellers could return to Earth billions of years in the future. A scenario based on this idea was presented in the novel Planet of the Apes by Pierre Boulle. A more likely use of this effect would be to enable humans to travel to nearby stars without spending their entire lives aboard the ship. However, any such application of time dilation during Interstellar travel would require the use of some new, advanced method of propulsion. Current space flight technology has fundamental theoretical limits based on the practical problem that an increasing amount of energy is required for propulsion as a craft approaches the speed of light. The likelihood of collision with small space debris and other particulate material is another practical limitation. At the velocities presently attained, however, time dilation is not a factor in space travel. Travel to regions of space-time where gravitational time dilation is taking place, such as within the gravitational field of a black hole but outside the event horizon (perhaps on a hyperbolic trajectory exiting the field), could also yield results consistent with present theory. LORENTZ TRANSFORMATION: In physics, the Lorentz transformation, named after the Dutch physicist Hendrik Lorentz, describes how, according to the theory of special relativity, two observers varying measurements of space and time can be converted into each others frames of reference. It reflects the surprising fact that observers moving at different velocities may measure different distances, elapsed times, and even different orderings of events. The Lorentz transformation was originally the result of attempts by Lorentz and others to explain observed properties of light propagating in what was presumed to be the luminiferous aether; Albert Einstein later reinterpreted the transformation to be a statement about the nature of both space and time, and he independently re-derived the transformation from his postulates of special relativity. The Lorentz transformation supersedes the Galilean transformation of Newtonian physics, which assumes an absolute space and time (see Galilean relativity). According to special relativity, this is only a good approximation at relative speeds much smaller than the speed of light. LORENTZ TRANSFORMATION RELATIVISTIC LENGTH CONTRACTION: One of the peculiar aspects of Einsteins theory of special relativity is that the length of objects moving at relativistic speeds undergoes a contraction along the dimension of motion. An observer at rest (relative to the moving object) would observe the moving object to be shorter in length. That is to say, that an object at rest might be measured to be 200 feet long; yet the same object when moving at relativistic speeds relative to the observer/measurer would have a measured length which is less than 200 ft. This phenomenon is not due to actual errors in measurement or faulty observations. The object is actually contracted in length as seen from the stationary reference frame. The amount of contraction of the object is dependent upon the objects speed relative to the observer. Temporal coordinate systems and clock synchronization In Relativity, temporal coordinate systems are set up using a procedure for synchronizing clocks, discussed by Poincarà © (1900) in relation to Lorentzs local time (see relativity of simultaneity). It is now usually called the Einstein synchronization procedure, since it appeared in his 1905 paper. An observer with a clock sends a light signal out at time t1 according to his clock. At a distant event, that light signal is reflected back to, and arrives back to the observer at time t2 according to his clock. Since the light travels the same path at the same rate going both out and back for the observer in this scenario, the coordinate time of the event of the light signal being reflected for the observer tE is tE = (t1 + t2) / 2. In this way, a single observers clock can be used to define temporal coordinates which are good anywhere in the universe. Symmetric time dilation occurs with respect to temporal coordinate systems set up in this manner. It is an effect where another clock is being viewed as running slowly by an observer. Observers do not consider their own clock time to be time-dilated, but may find that it is observed to be time-dilated in another coordinate system. SIMPLE INFERENCE OF TIME DILATION : Time dilation can be inferred from the observed fact of the constancy of the speed of light in all reference frames. This constancy of the speed of light means, counter to intuition, that speeds of material objects and light are not additive. It is not possible to make the speed of light appear faster by approaching at speed towards the material source that is emitting light. It is not possible to make the speed of light appear slower by receding from the source at speed. From one point of view, it is the implications of this unexpected constancy that take away from constancies expected elsewhere. Consider a simple clock consisting of two mirrors A and B, between which a light pulse is bouncing. The separation of the mirrors is L, and the clock ticks once each time it hits a given mirror. In the frame where the clock is at rest (diagram at right), the light pulse traces out a path of length 2L and the period of the clock is 2L divided by the speed of light: From the frame of reference of a moving observer traveling at the speed v (diagram at lower right), the light pulse traces out a longer, angled path. The second postulate of special relativity states that the speed of light is constant in all frames, which implies a lengthening of the period of this clock from the moving observers perspective. That is to say, in a frame moving relative to the clock, the clock appears to be running more slowly. Straightforward application of the Pythagorean theorem leads to the well-known prediction of special relativity: The spacetime geometry of velocity time dilation Time dilation in transverse motion. The green dots and red dots in the animation represent spaceships. The ships of the green fleet have no velocity relative to each other, so for the clocks onboard the individual ships the same amount of time elapses relative to each other, and they can set up a procedure to maintain a synchronized standard fleet time. The ships of the red fleet are moving with a velocity of 0.866 of the speed of light with respect to the green fleet. The blue dots represent pulses of light. One cycle of light-pulses between two green ships takes two seconds of green time, one second for each leg. As seen from the perspective of the reds, the transit time of the light pulses they exchange among each other is one second of red time for each leg. As seen from the perspective of the greens, the red ships cycle of exchanging light pulses travels a diagonal path that is two light-seconds long. (As seen from the green perspective the reds travel 1.73 (sqrt{3}) light-seconds of distance for every two seconds of green time.) One of the red ships emits a light pulse towards the greens every second of red time. These pulses are received by ships of the green fleet with two-second intervals as measured in green time. Not shown in the animation is that all aspects of physics are proportionally involved. The light pulses that are emitted by the reds at a particular frequency as measured in red time are received at a lower frequency as measured by the detectors of the green fleet that measure against green time, and vice versa. The animation cycles between the green perspective and the red perspective, to emphasize the symmetry. As there is no such thing as absolute motion in relativity (as is also the case for Newtonian mechanics), both the green and the red fleet are entitled to consider themselves motionless in their own frame of reference. Again, it is vital to understand that the results of these interactions and calculations reflect the real state of the ships as it emerges from their situation of relative motion. It is not a mere quirk of the method of measurement or communication. The four dimensions of space time In Relativity the world has four dimensions: three space dimensions and one dimension that is not exactly time but related to time. In fact, it is time multiplied by the square root of -1. Say, you move through one space dimension from point A to point B. When you move to another space coordinate, you automatically cause your position on the time coordinate to change, even if you dont notice. This causes time to elapse. Of course, you are always travelling through time, but when you travel through space you travel through time by less than you expect. Consider the following example: Time dilation; the twin paradox There are two twin brothers. On their thirtieth birthday, one of the brothers goes on a space journey in a superfast rocket that travels at 99% of the speed of light. The space traveller stays on his journey for precisely one year, whereupon he returns to Earth on his 31st birthday. On Earth, however, seven years have elapsed, so his twin brother is 37 years old at the time of his arrival. This is due to the fact that time is stretched by factor 7 at approx. 99% of the speed of light, which means that in the space travellers reference frame, one year is equivalent to seven years on earth. Yet, time appears to have passed normally to both brothers, i.e. both still need five minutes to shave each morning in their respective reference frame. As it can be seen from the above function, the effect of time dilation is negligible for common speeds, such as that of a car or even a jet plane, but it increases dramatically when one gets close to the speed of light. Very close to c, time virtually stands still for the outside observer. Time expands, space contracts Interestingly, while time expands from the perspective of the stationary observer, space contracts from the perspective of the moving observer. This phenomenon is known as Lorentz contraction, which is exactly the reciprocal of the above time dilation formula: l=l*sqr(1-v ²/c ²). Thus the space traveller passing by Earth at a speed of 0.99c would see its shape as an ellipsis with the axis parallel to his flight direction contracted to a seventh of its original diameter. That is of course, if he sees it at all, given the enormous speed. Therefore, space travel is shortened with the velocity of the traveller. A journey to the 4.3 light-years distant Alpha Centauri C, the closest star to our Sun, would take only 7.4 months in a space ship moving at 0.99c. The effect of time dilation has been experimentally confirmed thanks to very precise caesium clocks that can measure extremely small periods of time. Unfortunately, time dilation is completely outside of human experience, because we have not yet devised a way of travelling at speeds where relativistic effects become noticeable. Even if you spent your whole life in a jet plane that moves at supersonic speed, you would barely win a second over your contemporaries on the ground. And, not even todays astronauts can perceive the Lorentz contraction. Imagine you are a cosmonaut on board of space station Mir, moving at 7700 meters per second relative to Earth. Looking down upon Europe from space, you would see the entire 270 kilometre east to west extent of Switzerland contracted by a mere 0.08 millimetres. Can we travel at the speed of light? The hope that one day mankind will be able to travel at near-to-speed-of-light velocities seems farfetched, because of the incredible amounts of energy needed to accelerate a spacecraft to these speeds. The forces are likely to destroy any vehicle before it comes even close to the required speed. In addition, the navigational problems of near-to-speed-of-light travel pose another tremendous difficulty. Therefore, when people say they have to hurry in order to win time, they probably dont mean it in a relativistic way. Kant: Space and time are properties of thought The German philosopher, Immanuel Kant (1724-1804), maintained that time and space are a priori particulars, which is to say they are properties of perception and thought imposed on the human mind by nature. This subtle position allowed Kant to straddle the well-known differences about the reality of space and time that existed between Newton and Leibniz. Newton held that space and time have an absolute reality, in the sense of being quantifiable objects. Leibniz held against this that space and time werent really things, such as cup and a table, and that space and time have a different quality of being. Kants position agrees with Newton in the sense that space and time are absolute and real objects of perception, hence, science can make valid propositions about them. At the same time, he agrees with Leibniz by saying that time and space are not things in themselves, which means they are fundamentally different from cups and tables. Of course, this view of space and time also introduc es new problems. It divides the world into a phenomenal (inner) reality sphere and an noumenal (outer) reality sphere. From this academic separation arise many contradictions in epistemology. We will, however, not deal with this particular problem at this point. Life in a spacetime cubicle From Relativity we learn that time and space is seemingly independent of human experience, as the example of time dilation suggests. Since our own perception of time and space is bound to a single reference frame, time appears to be constant and absolute to us. Physics teaches us that this is an illusion and that our perception deceived us within living memory. Thanks to Einstein, we are now able to draw relativistic spacetime diagrams, compute gravitational fields, and predict trajectories through the four-dimensional spacetime continuum. Still, we are hardly able to visualise this spacetime continuum, or deal with it in practical terms, because human consciousness is bound to the human body, which is in turn bound to a single reference frame. We live within the confinements of our own spacetime cubicle. Considering that in Relativity, spacetime is independent of human perception, the Kantian understanding of space and time as a priori particulars seems to be obsolete. They are no longer properties of perception, but properties of nature itself. But, there is more trouble looming for Kant. Relativity stretches the distincti

For the Sisterhood Essay -- Women Feminist Feminism Papers

For the Sisterhood The female praying mantis is notorious in the animal kingdom for her mating habits. It has been observed that occasionally, the female will bite off the head of her mate during copulation. Among the many reasons for this cannibalistic behavior is that the head is an inhibitory center during sexual intercourse. Removing the head increases the drive of the male. As I sat in lecture listening to my Animal Behavior professor elaborate on the peculiar yet fascinating mating habits of the female praying mantis, I saw my male classmates around me squirm in their seats obviously disturbed by what they were hearing. Some of the girls in the room tittered nervously. I could not help smiling. Now there is a woman after my own heart. I often ask myself what I consider an ideal woman. In my mind, an ideal woman is independent, ambitious, self-sufficient. She has no fear of reaching for what may seem unattainable. Instead, she thrives on the challenge. Looking around, I see there are plenty of women who fit that mold. The US government has more high ranking women in office today than it has had at any other time in history. Compared to even just ten years ago, women are a visible force in the corporate world. The times have yielded us highly accomplished and highly successful women professors, writers, policewomen, musicians, doctors, lawyers. The list goes on and on. However, even with all the progress that has been made for women in the past few decades, there is undeniably a glass ceiling for women. Gender division of labor exists. Despite these progressive times, society still imposes expectations on women in all aspects of life, and women have not yet completely broken out ... ...ling will shatter. Women will scatter and fearlessly run rampant throughout the previously predominantly male society. We will not bite off the heads of our male counterparts like the female praying mantis. We are, after all, not insects. We will simply push men aside and assume those roles which we women are best suited for in today’s world. Women will take a stronger hold of their position in relationships, and this will be generally accepted. Men and women will work side by side in professional settings for equal pay and for equal amounts of respect. Old stereotypes of women will disintegrate because historically traditional roles are exactly that – historical and traditional. Such changes will take time. Schools of thought cannot be altered overnight. However, until that day comes, we will continue to persevere and fight for our place in this world.