Philosopher Hypatia of Ancient Alexandria

Philosopher Hypatia of Ancient Alexandria Known for: Greek intellectual and teacher in Alexandria, Egypt, known for mathematics and philosophy, martyred by Christian mob Dates: born about 350 to 370, died 416 Alternate spelling: Ipazia About Hypatia Hypatia was the daughter of Theon of Alexandria who was a teacher of mathematics with the Museum of Alexandria in Egypt. A center of Greek intellectual and cultural life, the Museum included many independent schools and the great library of Alexandria. Hypatia studied with her father, and with many others including Plutarch the Younger. She herself taught at the Neoplatonist school of philosophy. She became the salaried director of this school in 400. She probably wrote on mathematics, astronomy, and philosophy, including about the motions of the planets, about number theory and about conic sections. Accomplishments Hypatia, according to sources, corresponded with and hosted scholars from other cities. Synesius, Bishop of Ptolemais, was one of her correspondents and he visited her frequently. Hypatia was a popular lecturer, drawing students from many parts of the empire. From the little historical information about Hypatia that survives, it is surmised by some that she invented the plane astrolabe, the graduated brass hydrometer, and the hydroscope, with Synesius of Greece, who was her student and later colleague.  The evidence may also point to simply being able to construct those instruments. Hypatia is said to have dressed in the clothing of a scholar or teacher, rather than in womens clothing. She moved about freely, driving her own chariot, contrary to the norm for womens public behavior. She was credited by the surviving sources as having political influence in the city, especially with Orestes, the Roman governor of Alexandria. Hypatias Death The story by Socrates Scholasticus written soon after Hypatias death and the version written by John of Nikiu of Egypt more than 200 years later disagree in considerable detail, although both were written by Christians.  Both seem to be focused on justifying the expulsion of the Jews by Cyril, the Christian bishop, and on associating Orestes with Hypatia. In both, Hypatias death was a result of a conflict between the Orestes and Cyril, later made a saint of the church. According to Scholasticus, an order of Orestes to control Jewish celebrations met with approval by Christians, then to violence between the Christians and the Jews. The Christian-told stories make it clear that they blame the Jews for the mass killing of Christians, leading to the banishment of the Jews of Alexandria by Cyril.  Cyril accused Orestes of being a pagan, and a large group of monks who came to fight with Cyril attacked Orestes. A monk who injured Orestes was arrested and tortured.  John of Nikiu accuses Orestes of inflaming the Jews against the Christians, also telling a story of the mass killing of Christians by Jews, followed by Cyril purging the Jews from Alexandria and converting the synagogues to churches.  Johns version leaves out the part about a large group of monks coming to town and joining the Christian forces against the Jews and Orestes. Hypatia enters the story as someone associated with Orestes and suspected by the angry Christians of advising Orestes not to reconcile with Cyril.  In John of Nikius account, Orestes was causing people to leave the church and follow Hypatia.  He  associated her with Satan and accused her of converting people away from Christianity. Scholasticus credits Cyrils preaching against Hypatia with inciting a mob led by fanatical Christian monks to attack Hypatia as she drove her chariot through Alexandria. They dragged her from her chariot, stripped her, killed her, stripped her flesh from her bones, scattered her body parts through the streets, and burned some remaining parts of her body in the library of Caesareum.  Johns version of her death is also that a mob for him justified because she beguiled the people of the city and the prefect through her enchantments stripped her naked and dragged her through the city until she died. Legacy of Hypatia Hypatias students fled to Athens, where the study of mathematics flourished after that. The Neoplatonic school she headed continued in Alexandria until the Arabs invaded in 642. When the library of Alexandria was burned, the works of Hypatia were destroyed.  That burning happened primarily in Roman times.  We know her writings today through the works of others who quoted her even if unfavorably and a few letters written to her by contemporaries. Books About Hypatia Dzielska, Maria.  Hypatia of Alexandria.  1995.Amore, Khan.  Hypatia.  2001. (a novel)Knorr, Wilbur Richard.  Textual Studies in Ancient and Medieval Geometry. 1989.Nietupski, Nancy. Hypatia: Mathematician, Astronomer, and Philosopher.  Alexandria  2.Kramer, Edna E. Hypatia.  The Dictionary of Scientific Biography.  Gillispie, Charles C. ed. 1970-1990.Mueller, Ian. Hypatia (370?-415).  Women of Mathematics. Louise S. Grinstein and Paul J. Campbell, ed. 1987.Alic, Margaret.  Hypatias Heritage: A History of Women in Science from Antiquity Through the Nineteenth Century.  1986. Hypatia appears as a character or theme in several works of other writers, including in  Hypatia, or New Foes with Old Faces, a historical novel by Charles Kingley.

Washington Naval Disarmament Treaty

Washington Naval Disarmament Treaty The Washington Naval Conference Following the end of World War I, the United States, Great Britain, and Japan all commenced large-scale programs of capital ship construction. In the United States, this took the form of five new battleships and four battlecruisers, while across the Atlantic the Royal Navy was preparing to build its series of G3 Battlecruisers and N3 Battleships. For the Japanese, the postwar naval construction began with a program calling for eight new battleships and eight new battlecruisers. This building spree led to concern that a new naval arms race, similar to the pre-war Anglo-German competition, was about to begin. Seeking to prevent this, President Warren G. Harding called the Washington Naval Conference in late 1921, with the goal of establishing limits on warship construction and tonnage. Convening on November 12, 1921, under the auspices of the League of Nations, the delegates met at Memorial Continental Hall in Washington DC. Attended by nine countries with concerns in the Pacific, the principal players included the United States, Great Britain, Japan, France, and Italy. Leading the American delegation was Secretary of State Charles Evan Hughes who sought to limit Japanese expansionism in the Pacific. For the British, the conference offered an opportunity to avoid an arms race with the US as well as an opportunity to achieve stability in the Pacific which would provide protection to Hong Kong, Singapore, Australia, and New Zealand. Arriving in Washington, the Japanese possessed a clear agenda that included a naval treaty and recognition of their interests in Manchuria and Mongolia. Both nations were concerned about the power of American shipyards to out-produce them if an arms race were to occur. As the negotiations commenced, Hughes was aided by intelligence provided by Herbert Yardleys Black Chamber. Operated cooperatively by the State Department and US Army, Yardleys office was tasked with intercepting and decrypting communications between the delegations and their home governments. Particular progress was made breaking Japanese codes and reading their traffic. The intelligence received from this source permitted Hughes to negotiate the most favorable deal possible with the Japanese. After several weeks of meetings, the worlds first disarmament treaty was signed on February 6, 1922. The Washington Naval Treaty The Washington Naval Treaty set specific tonnage limits on the signees as well as restricted armament size and expansion of naval facilities. The core of the treaty established a tonnage ratio that permitted the following: United States: Capital Ships - 525,000 tons, Aircraft Carriers - 135,000 tonsGreat Britain: Capital Ships - 525,000 tons, Aircraft Carriers - 135,000 tonsJapan: Capital Ships - 315,000 tons, Aircraft Carriers - 81,000 tonsFrance: Capital Ships - 175,000 tons, Aircraft Carriers - 60,000 tonsItaly: Capital Ships - 175,000 tons, Aircraft Carriers - 60,000 tons As part of these restrictions, no single ship was to exceed 35,000 tons or mount larger than 16-inch guns. Aircraft carrier size was capped at 27,000 tons, though two per nation could be as large as 33,000 tons. In regard to onshore facilities, it was agreed that the status quo at the time of the treatys signing would be maintained. This prohibited the further expansion or fortification of naval bases in small island territories and possessions. Expansion on the mainland or large islands (such as Hawaii) was permitted. Since some commissioned warships  exceeded the treaty terms, some exceptions were made for existing tonnage. Under the treaty, older warships could be replaced, however, the new vessels were required to meet the restrictions and all signatories were to be informed of their construction. The 5:5:3:1:1 ratio imposed by the treaty led to friction during negotiations. France, with coasts on the Atlantic and Mediterranean, felt that it should be permitted a larger fleet than Italy. They were finally convinced to agree to the ratio by promises of British support in the Atlantic. Among the main naval powers, the 5:5:3 ratio was badly received by the Japanese who felt they were being slighted by the Western Powers. As the Imperial Japanese Navy was essentially a one-ocean navy, the ratio still gave them a superiority over the US and Royal Navy which had multi-ocean responsibilities. With the treatys implementation, the British were forced to cancel the G3 and N3 programs and the US Navy was required to scrap some of its existing tonnages to meet the tonnage restriction. Two battlecruisers then under construction were converted into the aircraft carriers USS Lexington and USS Saratoga. The treaty effectively stopped battleship construction for several years as the signatories attempted to design ships that were powerful, but yet still met the agreements terms. Also, efforts were made to build large light cruisers that were effectively heavy cruisers or that could be up-converted with bigger guns in wartime. In 1930, the treaty was altered by the London Naval Treaty. This, in turn, was followed by the Second London Naval Treaty in 1936. This last treaty was not signed by Japanese as they had decided to withdraw from the agreement in 1934. The series of treaties begun with the Washington Naval Treaty effectively ceased on September 1, 1939, with the beginning of World War II. While in place, the treaty did somewhat limit capital ship construction, however, the per vessel tonnage limitations were frequently flouted with most signatories either using creative accounting in computing displacement or outright lying about a vessels size. Selected Sources Washington Naval Treaty: TextUS State Department: Washington Naval Conference

The Future of the Coastguard Essay Example | Topics and Well Written Essays - 3000 words

The Future of the Coastguard - Essay Example Apart from that, its function as a search and rescue service and as an environmental monitoring and protection one, cannot be underestimated or undervalued. The coast guard is essential in the life of any coastal or island country and its importance is expected to increase. While there are hardly any who are not aware of the presence, aims and objectives of all of the army, the navy and the air force, only a handful of people have a similar awareness of the coastguard. Although some countries, such as the United States, Canada and Japan, define the coast guard as a division of the national military, its importance is generally underestimated (LaGuardia-Kotite and Ridge, 2006). Popular understanding of the coast guard is that it acts as a vessel and life rescue service and, in some instances, to monitor fishing across the national coastlines and waters. This understanding barely touches upon the duties, responsibilities, aims and objectives of both civilian and military coast guard services, nor does it even hint at the fact that the coast guard, in the first and last, is primarily responsible for coastal and port security. In other words, the responsibilities and functions of the coast guard directly tie in with national security (LaGuardia-Kotite and Ridge, 2006). This research paper, which shall highlight the multiple functions of the coast guard s... n, shall, hopefully, illustrate that insofar as coastal countries are concerned, the coast guard plays an invaluable and vital role; a role which directly contributes to increased national security. Historical Background The Coast Guard first emerged in the early nineteenth century and in direct response to an ever growing need to protect coastal areas from smugglers, not to mention rescue services for vessels and fleets in distress (LaGuardia-Kotite and Ridge, 2006). While there is, currently, hardly a coastal country which does not have a coast guard service, tracing its history in the United Kingdom is particularly informative, not just because the first coast guard service emerged in that country but because both civilian and military division of the UK coast guard functioned, and to a degree continues to function, as the model for the same in coastal nations across the world (Thoreaux, 2006). Prior to expanding upon the genesis of the coastguard and over viewing its historical evolution in Britain, it is interesting to point out that the United States Coastguard strenuously maintains that the historical roots of this service lie in the United States (Beard, 2004). According to this argument, the outbreak of conflict between the United States and Britain regarding the colonisation of North America, is directly responsible for the evolution of the coastguard. In 1740, with the outbreak of the aforementioned war, military commanders realised the imperatives of stationing men along strategic coastal areas for "look-out" duties (Beard, 2004, p. 78). These men were supposed to keep watch over the impending arrival of enemy vessels and to warn the army (Beard, 2004). Insofar as the function of these men was the protection of coastal areas against the possible

Construction and operation of aircraft fluid systems Coursework

Construction and operation of aircraft fluid systems - Coursework Example The turbine engine and the pneumatic power generation component are integral. Largely, the engine component is responsible to the pneumatic power generation. The constructional design of the power generation component takes into consideration the needs to regulate pressure and temperature. Normally, bled air conditions depend on the engine functioning conditions. Critics contend that bleeding the air from the engine can lead to engine suffocation consequently leading to mechanical breakdown. The pneumatic compressor bleeds air from the engine in various stages, a low-pressure port, intermediate and high-pressure port. The compressor has a check valve, which prevents air from moving to low pressure port during bleeding. By design, the low-pressure port is always open, but the shut valve may close it if the engine is a critical condition. The pneumatic power system in aircraft is a secondary power. By design, bleed air is tapped from one or more points along the engine compressor to pr ovide pneumatic power. To achieve the requirement drive shafts, from the engine’s high pressure shaft, drive an accessory gear box on which are mounted generators and hydraulic pumps as well as engine’s own accessories. ... The pneumatic power system has several functions in an aircraft. These functions are air conditioning and pressurization. In aircrafts for civil transport, bleed air is useful in extracting the secondary source of power. The users of the pneumatic power system are air conditioning system and pressurization systems. By design, the air pressure in the aircraft cabin should be at a pressure equivalent to 8000 feet or less and this requires a constant supply of air. It follows therefore that the pneumatic power systems must supply the required pressure in the aircraft. Moreover, the oxygen used in the aircraft requires replacement at constant intervals. Normally, the contaminant level should be under check to avoid suffocation in the aircraft. To control this process, the aircraft requires a source of air pressure that can aid the sucking of the contaminated air and replacing it with fresh air. The pneumatic power systems provides effective high pressure used in the above requirement. Th e process of air conditioning passes through numerous stages ranging from sucking the contaminated air, filtering as well as supplying the fresh air alongside a maintained temperature. The pneumatic power systems drive the ice protection systems. Dangerous icing conditionings are no longer a threat to the modern aircraft because of the modernization of the aircraft components. However, critics have several reasons behind the need to protect aircraft from icing conditions. Some of the reasons adduced against this factor include possibility of accidents resulting from the accretion of ice on the lifting surface of aircraft. The major cause of engine intake icing is the special flow conditions present and most aircraft have at least some provision for de icing in this region of the frame.

A Streetcar Named Desire, by Tennessee Williams :: English Literature Essays

A Streetcar Named Desire In Tennesse Williams' play, "A Streetcar Named Desire" the readers are introduced to a character named Blanche DuBois. In the plot, Blanche is Stella's younger sister who has come to visit Stella and her husband Stanley in New Orleans. After their first meeting Stanley develops a strong dislike for Blanche and everything associated with her. Among the things Stanley dislikes about Blanche are her "spoiled-girl" manners and her indirect and quizzical way of conversing. Stanley also believes that Blanche has conned him and his wife out of the family mansion. In his opinion, she is a good-for-nothing "leech" that has attached itself to his household, and is just living off him. Blanche's lifelong habit of avoiding unpleasant realities leads to her breakdown as seen in her irrational response to death, her dependency, and her inability to defend herself from Stanley's attacks. Blanche’s situation with her husband is the key to her later behavior. She married rather early at the age of sixteen to whom a boy she believed was a perfect gentleman. He was sensitive, understanding, and civilized much like herself coming from an aristocratic background. She was truly in love with Allen whom she considered perfect in every way. Unfortunately for her he was a homosexual. As she caught him one evening in their house with an older man, she said nothing, permitting her disbelief to build up inside her. Sometime later that evening, while the two of them were dancing, she told him what she had seen and how he disgusted her. Immediately, he ran off the dance floor and shot himself, with the gunshot forever staying in Blanche’s mind. After that day, Blanche believed that she was really at fault for his suicide. She became promiscuous, seeking a substitute men (especially young boys), for her dead husband, thinking that she failed him sexually. Gradually her reputation as a whore built up and everyone in her home town knew about her. Even for military personnel at the near-by army base, Blanche's house became out-of-bounds. Promiscuity though wasn't the only problem she had. Many of the aged family members died and the funeral costs had to be covered by Blanche's modest salary. The deaths were long, disparagi ng and horrible on someone like Blanche. She was forced to mortgage the mansion, and soon the bank repossessed it. At school, where Blanche taught English, she was dismissed because of an incident she had with a seventeen-year-old student that reminded her of her late husband.

Electric Motor driven Water Pump activated by Temperature Sensor Essay

In recent times the farmers have been using irrigation technique through manual control in which the farmer irrigate the land at regular intervals by turning the water pump on/off when required. This process sometimes consumes more water and sometimes the water supply land is delayed due to which the crops dry out. It is an electromechanical system. There is advance mechanical water pump which will use to irrigate the crops in farms. The dc electric motor (permanent magnet dc motor or PMDC) will be used to drive this pump. The motor is controlled by the controller which is connected to the battery and the temperature sensor which give a signal to the controller when the surrounding temperature will increase or decrease. The temperature is set to (35OC) in the controller whenever it will increase or decrease from the set temperature it will automatically turn on/off the motor with the help of controller and battery which is connected with it. After that with the help of motor water pump which is connected to the motor will send water to the farms. It will useful for those crops which need constant water and should soak during the growth which will reduce the dry out problems of crops. Block Diagram of Electric motor driven Water Pump. 101917515367000 PARTS WHICH WE ARE USING FOR THIS PROJECT. Waterproof temperature sensor Battery PMDC electric motor Temperature controller Mechanical water pump PROBLEMS Two of the most widely recognized issues with cultivating water system frameworks need to do with water system booking. Water system booking is just noting the inquiries of â€Å"When do I water?† and â€Å"To what extent do I water?†. Beginning a water system cycle too soon as well as running a water system cycle too long is considered overwatering. At any rate, this training squanders water and cash. Be that as it may, over watering can cause edit harm if done on a delayed premise. In like manner, beginning a water system cycle past the point of no return or not running the framework for a sufficiently long timeframe is considered under watering and can cause decreased yields and poor harvest quality which can influence cost. There is also one most common problem which is faced by most of the farmers is field situated miles away from their homes. They have to travel daily base at several time to start or stop the irrigation water pump which is too important for the crops which consume more time. some time due to over irrigation and under irrigation crops are damaged by which farmer face big loss as shown in picture 1.1. Some farmers have more land and they have more need of manpower because of manual turning on/off for water pump which will take more time and become costly because of labor. . Problems sometimes without automatic irrigation system picture of the farm. AIM/OBJECTIVES A model of controlling irrigation facilities to help millions of people. In many countries, agriculture plays an important role in shaping up the economy and the climate conditions are anisotropic. the main purpose of this project is to save crops from dry out and the time which is also important in human life. The model uses temperature sensor technology with the controller to make smart switching devices. It is the basic automatic switching mechanism of motor water pump using the sensor from surrounding temperature. This system can be operated at night and water which loss from evaporation is thus minimized. The most significant advantage is that water is supplied only when the temperature is increased and the plant has need of water. It works according to temperature and keeps soil soaked whenever it going to dry because of temperature. It will also reduce the consumption of water and save the lot of water which will more beneficial for the dry areas of the world. There is also one more biggest advantage of this project is it will also help to increase the production of the crops and save crops from dry out which is also good for the farmers and those countries which totally depend on the farming. It is the highly sensitive product with the low cost by which poor farmers can also buy this in their budget. With the help of automatic irrigation system picture of a farm.

The Sexualization Of Female Youth - 1754 Words

In addition to allowing their daughters to wear sexually provocative clothing, some parents will pay for their daughter to get plastic surgery, some of which include breast augmentation and nose jobs. The APA states that in 2006 the American Society of Plastic Surgeons reported that they performed close to 80,000 surgeries on teenagers younger than 19 years of age, the previous year (15). One can only assume that the teenagers that get plastic surgery have their parents’ approval because insurance does not cover the costs of cosmetic surgery. However, the research report does not state how many of the plastic surgeries performed in 2005 were elective surgeries. Parents are also contributing to the problem of the sexualization of female youth by competing against other parents. Author Meg McSherry Breslin quotes family therapist and author William Doherty, in her article as saying that parents contribute to girls’ sexualization by using â€Å"competitive parenting. † Parents will compete against each other to prove that they are the better parent, by allowing their daughter to appear and act older than she is. When parents act this way, they are in a sense asking the media and retailers to keep coming out with new more grown up trends so that they can stay ahead of the other parents (qtd. in Breslin 15). Additionally, there are parents that enroll their toddler daughters in beauty pageants that encourage the young girls to act flirty to win votes. Breslin continues herShow MoreRelatedThe Sexualization Of Female Youth1776 Words   |  8 PagesParents can contribute to the sexualization of their daughters as well. For instance, there are parents that purchase or allow their daughters to wear sexually provocative clothing. 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