Signal Units Involved during World War II Essay Example

Signal Units Involved during World War II Essay Example Signal Units Involved during World War II Essay Signal Units Involved during World War II Essay ATZH-LCB-B29 January 2012 SUBJECT: Chapter review of Getting the Message Through, Chapter VIII. 1. Chapter VIII is about signal units involved during World War II. Throughout each phase of the conflict, new problems and difficulties arose that could only be overcome through hard work, ingenuity and extreme bravery. The huge scope of the war on numerous continents tested the will and determination of the signal corps. 2. The first real need for signal support was hemisphere defense. This included protecting the Panama Canal from bombings, the British supply line by way of Greenland and the Japanese invasion of parts of Alaska after bombing of Pearl Harbor. They installed radar along the coasts and ran thousands of miles of wire through the frozen terrain of Alaska. On Puerto Rico, Signal Units provided aircraft warnings and communication support to help protect the Caribbean. 3. The first Signal units to actually face the enemy were in the Pacific. After the Pearl Harbor bombing, the Japanese began invading the Philippine Islands. They forced General McArthur to retreat to the Bataan Peninsula and finally Corregidor. Not all of the soldiers could get away. Lt. Gen. Wainwright was in command of the garrison and ventually moved his headquarters underground into the Malinta Tunnel. Col. Theodore Teague was commanding signal officer and once the Japanese invaded the tunnels, he ordered his signal soldiers to destroy all equipment. To keep communications going in the Philippines, the Signal Corps created the 978th Signal Service Company out of largely Filipino volunteers. They worked hand in hand with the guerilla fghters that resisted the Japanese invaders. These volunteers helped pave the way for the eventual Allied liberation of the Philippines. 4. The Signal Corps became involved in a grander scale of combat operations in North Africa. General Dwight D Eisenhower was the overall Allied Commander of invasions of Morocco, Algeria and Tunisia. His chief Signal Officer was Brig. Gen. Jerry V MateJka. The first big test was operation TORCH, in which the Signal Corp was to provide communications for the amphibious assaults. Numerous problems arose from failure to keep the sea water from damaging equipment to the equipment itself being too heavy. They eventually set up permanent ACAN stations. Another issue was the different codes and call signs used by the British Army and Navvy, Royal Air Force and the Army Air Forces. Signal soldiers had to be adaptive and learn on their feet. 5. In helping to plan the Invasion of Normandy on the European front, the Signal Corps became part ot the Services ot Supply. Brig. Gen. illi m S Rumbougn became the theaters chief signal officer. He was faced with signal planning for the largest military operation of the war. This included establishing system of priorities for telephone traffic and allocating frequencies for the 90,000 transmitters needed for the operation. He also created the Joint Assault Signal Company OASCO) to provide signal support for the amphibious assaults at Omaha and Utah beaches. Also, wenty-eight signal men from the 101st Airborne Signal Company were the first signal men to land in France. They flew in with their SCR-449 radios on gliders. Multichannel radios were first incorporated in the Normandy invasion. 6. Once Hitler committed suicide and Germany surrendered, the Signal Corps put all their resources in support of the Pacific campaign to finish off the Japanese. The jungles of the numerous islands provided many issues with radio communications. To get the message through, miles and miles of wire were run through the trees without proper equipment. The SCR 300 radio was used to communicate with aircraft or arrangement of supply drops for the advancing Allied forces. The Signal Corps had also built their own signal fleet equipped with VHF radio relay sets. Their flagship, the Apache, was specifically devoted to public relations. After the ferocious battle of Iwo Jima, the Signal Corps began planning the communications for the proposed invasion of Japan called Operation OLYMPIC. The dropping of atomic bombs on Hiroshima and Nagasaki brought the war to a quick conclusion. The Signal Corps performed their last duty by broadcasting the formal Japanese surrender proceedings aboard the USS Missouri to all the world.

Nudibranch Facts

Nudibranch Facts Enchanting to both divers and scientists, colorful nudibranchs (pronounced nooda-bronk and including Nudibranchia, suborders Aeolidida and Doridacea) inhabit the sea floors of oceans all over the world. The unattractively named sea slug comes in a fantastic array of shapes and neon-bright colors that they themselves cannot see. Fast Facts: Nudibranchs (Sea Slugs) Scientific Name: Nudibranchia, suborders Aeolidida and DoridaceaCommon Name: Sea slugBasic Animal Group: InvertebrateSize: Microscopic to 1.5 feet longWeight: Up to just over 3 poundsLifespan: A few weeks to a year  Diet:  CarnivoreHabitat: On seafloors all over the world, between 30 and 6,500 feet below the water surfacePopulation: UnknownConservation Status: Not Evaluated Description Nudibranchs are mollusks in the class Gastropoda, which includes snails, slugs, limpets, and sea hairs. Many gastropods have a shell. Nudibranchs have a shell in their larval stage, but it disappears in the adult form. Gastropods also have a foot and all young gastropods undergo a process called ​​torsion in their larval stage. In this process, the entire top of their body twists 180 degrees on their foot. This results in the placement of the gills and anus above the head, and adults that are asymmetrical in form. The word nudibranch comes from the Latin word nudus (naked) and Greek brankhia (gills), in reference to the gills or gill-like appendages which protrude from the backs of many nudibranchs. They also may have tentacles on their heads that help them smell, taste, and get around. A pair of tentacles called rhinophores on the nudibranchs head have scent receptors that allow the nudibranch to smell its food or other nudibranchs. Because the rhinophores stick out and can be a target for hungry fish, most nudibranchs have the ability to withdraw the rhinophores and hide them in a pocket in their skin if the nudibranch senses danger. Amin Benhameurlaine  / Getty Images Species There are over 3,000 species of nudibranchs, and new species are still being discovered. They range in size from microscopic to over a foot and a half long  and can weigh up to just over 3 pounds. If youve seen one nudibranch, you havent seen them all. They come in an astonishingly wide variety of colors and shapes- many have brightly colored stripes or spots and flamboyant appendages on their head and back. Some species are transparent and/or bio-luminescent, like the Phylliroe. Nudibranchs thrive in an enormous variety of underwater environments, from shallow, temperate, and tropic reefs to Antarctica and even hydrothermal vents. cbpix/Getty Images Suborders Two main suborders of nudibranchs are dorid nudibranchs (Doridacea) and aeolid nudibranchs (Aeolidida). Dorid nudibranchs, like the Limacia cockerelli, breathe through gills that are on their posterior (back) end. Aeolid nudibranchs have cerata  or finger-like appendages that cover their back. The cerata can be a variety of shapes- thread-like, club-shaped, clustered, or branched. They have multiple functions, including breathing, digestion, and defense. Habitat and Distribution Nudibranchs are found in all the worlds oceans, from cold water to warm water. You might find nudibranchs in your local tide pool, while snorkeling or diving on a tropical coral reef, or even in some of the coldest parts of the ocean or in thermal vents. They live on or near the sea floor and have been identified at depths between 30 and 6,500 feet below the ocean surface. Diet Most Nudibranchs eat using a radula, a toothed structure that they use to scrape off prey from the rocks they cling to; some suck out the prey after predigesting its tissue with selected enzymes, rather like a wasp. They are carnivorous, so that prey includes sponges, coral, anemones, hydroids, barnacles, fish eggs, sea slugs, and other nudibranchs. Nudibranchs are picky eaters- individual species or families of nudibranchs may eat only one kind of prey. Nudibranchs get their bright colors from the food they eat. These colors may be used for camouflage or to warn predators of the poison that lies within. The Spanish shawl nudibranch (Flabellina iodinea) feeds on a species of hydroid called Eudendrium ramosum, which possesses a pigment called astaxanthin that gives the nudibranch its brilliant purple, orange, and red coloration. Some nudibranchs, like the Blue Dragon, create their own food by eating coral with algae. The nudibranch absorbs the algaes chloroplasts (zooxanthellae) into the cerata, which acquire nutrients by photosynthesis using the sun to sustain the nudibranch for months. Others have evolved other ways of farming zooxanthellae, housing them in their digestive gland. Behavior The sea slugs can see light and dark, but not their own brilliant coloration, so the colors are not intended to attract mates. With their limited vision, their sense of the world is obtained through their rhinophores (on top of the head) and oral tentacles (near the mouth). Not all nudibranchs are colorful; some use defensive camouflage to match the vegetation and hide, some can change their colors to fit, some hide their bright colors only to bring them out to warn off predators. Nudibranchs move on a flat, broad muscle called a foot, which leaves a slimy trail. While most are found on the ocean floor, some can swim short distances in the water column by flexing their muscles. Some even swim upside down. Aeolid nudibranchs can use their cerata for defense. Some of their prey such as Portuguese man-of-wars have a specialized cell in their tentacles called nematocysts that contain a barbed or venomous coiled thread. Nudibranchs eat the nematocysts and store them in the nudibranchs cerata where they can be used late to sting predators. Dorid nudibranchs make their own toxins or absorb toxins them from their food and release those into the water when needed. Despite the unsavory or toxic taste they can present to their non-human predators, most nudibranchs are harmless to humans, except those like Glaucus atlanticus which consumes nematocytes and so may consider you a predator and sting. Reproduction and Offspring Nudibranchs are hermaphrodites, meaning that they have reproductive organs of both sexes. Because they cant move too far, too fast and are solitary in nature, its important for them to be able to reproduce if the situation presents itself. Having both sexes means that they can mate with any adult that happens to pass by. Nudibranchs lay masses of spiral-shaped or coiled eggs, which are for the most part left on their own. The eggs hatch into free-swimming larvae which eventually settle onto the ocean bottom as adults. Only one species of nudibranch, the Pteraeolidia ianthina, exhibits parental care by guarding the newly-laid egg masses. Nudibranchs and Humans Scientists study nudibranchs because of their complex chemical makeup and adaptations. They have rare or novel chemical compounds which possess anti-microbial and anti-parasitic traits which may aid in the fight against cancer.   Studies of nudibranch DNA also offer assistance in tracking ocean conditions relative to climate change. Threats These beautiful animals dont live very long; some live up to a year, but some only for a few weeks. The global population of nudibranchs is currently unassessed- researchers are still discovering new ones each year- but field observations such as that conducted by Endangered Species International suggest that many species are becoming rare, due to water pollution, degradation, habitat loss, and biodiversity decline associated with global warming.   Sources Bertsch, Hans. Nudibranchs: Sea Slugs With Verve. The Slug Site, 2004.Cheney, Karen L. and Nerida G. Wilson. Quick Guide: Nudibranchs. Current Biology Magazine 28.R4–R5, January 8, 2018.Epstein, Hannah E, et al. Reading between the Lines: Revealing Cryptic Species Diversity and Colour Patterns in Hypselodoris Nudibranchs (Mollusca: Heterobranchia: Chromodorididae).  Zoological Journal of the Linnean Society.zly048 (2018).King, Rachael. Is It a Worm? A Snail? No...Its a Nudibranch!. Southeast Regional Taxonomic Center, Marine Resources Research Institute, South Carolina Department of Natural Resources.Knowlton, Nancy. Citizens of the Sea: Wondrous Creatures From the Census of Marine Life. Washington, DC: National Geographic Society, 2010.Lewis, Ricki. Celebrating National Sea Slug Day. PLOS Blogs: Diverse Perspectives on Science and Medicine, November 1, 2018.Nudibranchs and other sea slugs. New Heaven Reef Conservation Program, 2016.

Deontological ethics and teleological (utilitarian) ethics Essay

Deontological ethics and teleological (utilitarian) ethics - Essay Example An act undertaken with negative intentions is therefore, under deontology, immoral irrespective of its beneficial consequences. The two theories therefore differ in the principles that while utilitarianism is based on consequences of actions, deontology is based on responsibility and motives into actions (Mann and Roberts, 2012; Ahronheim, Moreno and Zuckerman, 2005). Both deontology and teleology have inherent problems. Teleology undermines justice as it can promote an unlawful practice as long as the practice results in more benefits than harm. It is also difficult to quantify consequences of actions. Deontology is however rigid and may lead to harmful actions. Similarly, deontology’s observance of rules may lead to confusion especially â€Å"when values or assumptions conflict† (Mann and Roberts, 2012, p. 16). Teleological ethics that requires attention to consequences is therefore a problem because it may induce conflict with legal provisions since a beneficial consequence may be achieved through illegal means. This means that the theory undermines justice. Social dynamism also means that long term consequences of present actions on future actions cannot be predicted, a matter that further undermines utilitarianism (Mann and Roberts, 2012, p.

Arab Culture and Beliefs Essay Example | Topics and Well Written Essays - 1000 words

Arab Culture and Beliefs - Essay Example The Islamic faith had taken roots in the 6th century AD in Saudi Arabia and spread out into the surrounding regions. The Islamic rulers were trained in the art of warfare, astute statesmen and able administrators6. They ruled with an iron hand but they were fair in their dealings7. They were patrons of literature, arts, science and philosophy8. Trade, education and military expeditions were high on their agenda and they carried out these in the best tradition9 and vision the newly found religion propagated and expounded10 (Saudi Arabia: Culture). Hence, given the ideal state of affairs storytellers flourished11. These bards were thoroughly familiar with the fallacies and foibles of all men from at all levels12. They were either trained in the art of storytelling or were motivated13 enough to stir up their imaginations to arouse interest and maintain it through mentally manufactured plots which they narrated before gaping, awe-struck audience14. Which audience will resist the temptation to hear accounts of rags to riches episodes15 couched with mysterious events, adventures, gallant heroes, beautiful women, eccentric rulers, scheming villains, strange beings and beasts, and rounded up with the most unlikely and profound endings.16 The Arab culture of medieval times provide the fantastic backgro... The Arab culture of medieval times provide the fantastic background of valor and wealth, innocence and greed, intrigue and deceit, ogre and jinn, and a rich variety of oriental charm and chicanery17 to embellish the Arabian Nights with the unique touch and brand of a world where the interplay of facts and fiction18 gave both an aura of invincibility and supernatural powers to perform the impossible.19 The Arabian Nights tantalizingly reflect the heydays of Arabia's past glory20 when ------------------------------------------------------------------------------------------------------------ 11,12,13,14,15 Saudi Arabia: Culture 16,17,18,19,20 The Arabian Nights the Arab world was a world centre for learning, science, arts and philosophy21. The advent and spread of Islam in the Arab world22 and beyond happened in the times the Arabian Nights came to be written and told23. Possibilities exist for some of the stories to have been given a makeover of the Arab culture and beliefs24 to make it more acceptable to the regional masters and citizenry15. It is also possible that many of the stories originated25 from one of the countries with whom Arabia had economic and cultural ties like India26. The stories resonate with the culture and ethos of these places where the Islamic rulers had dominion including the countries the Arabs did business with27. What distinguishes the Arabian Nights from other folklores is the way metaphysics28 is incorporated to highlight ordinary life and situations with supernatural aliens and incidents29. The stories of Ali Baba and the Forty Thieves, Sindbad the Sailor, Aladdin and the Wonderful Lamp30 are some examples of

Anne Sexton Literary Essay Example for Free

Anne Sexton Literary Essay Anne Sexton transforms the well-known fairytale Snow White into a sardonic piece of writing that reflects societal perceptions of the woman. In her poem she explores the idea that a woman is nothing more than a doll, something that sits pretty on a shelf for all to admire. She also describes the reliance on men, and how women are becoming dependent and incompetent. She counteracts this with a women’s intelligence compared to her beauty and vanity, and what a woman should be. She explores the idea of beauty and vanity going hand in hand, meaning that even princesses can be vain. Fairytales aren’t real, and they are overrated- happily ever after does not exist, especially for those who aren’t beautiful. All fairytales have a female antagonist, and one that is usually a princess. Snow White is sexualized as the virgin. Good Day Mama,  and shut for the thrust  of the unicorn. She is unsoiled. She is as white as a bonefish. (9-13) This text explains that she innocent and untouched. All that matters to a prince is that she is beautiful and a virgin. A brand new doll with porcelain skin and glassy eyes. cheeks as fragile as cigarette paper, arms and legs made of Limoges, lips like Vin Du Rhà ´ne, rolling her china-blue doll eyes open and shut. (3-7) Sexton compares Snow White to a doll because she is merely an object for ones admiration and love. She is to be pampered and taken care of in return of sitting pretty on the shelf, to be admired. Beauty and vanity play the two-sided coin in this poem, you can’t have one without the other. The queen epitomizes vanity, when she asks the mirror who is the fairest of the land. When the reply is Snow White, she is outraged. Being the most beautiful person in the land is what the queen desires. She craves the attention because beauty is so valued, and Sexton makes that clear. If Snow White or the Queen weren’t beautiful, would anyone ever notice them? Sexton says,  Ã¢â‚¬Å"Beauty is a simple passion.† Meaning everyone desires beauty, so those who have it are more noticed. Because Snow White is beautiful, both the prince and the dwarves value her. But with beauty comes vanity, and that is something that Sexton believes in. She believes women should be active and intelligent; beauty is just a faà §ade that relieves women of reaching their full potential. If a woman is beautiful, she can be just as successful as a smart woman without doing all the work because she can rely on men. Any man will want a beautiful wife that does not interfere with his matters. This is what the prince seeks, and finds when he falls in love with Snow White only for her beauty. He stayed so long his hair turned green and still he would not leave. The dwarfs took pity upon him and gave him the glass Snow White its dolls eyes shut forever to keep in his far-off castle. Sexton believes all women should work to be smart, and beauty is no reason not to achieve that. Snow White is unintelligent because she keeps opening the door to the queen even when the dwarfs urge her not too. Her unintelligence is linked to her reliance on a man because she ends up in the happily-ever-after position as the wife of a prince even though she did nothing to deserve it. But what Sexton is trying to show us at the end of the poem that Snow White is now obsessed with herself and her status, and that she will one day be the queen that tries to kill the next young beauty. Meanwhile Snow White held court, rolling her china-blue doll eyes open and shut and sometimes referring to her mirror as women do. The fairytale ending is fictional. The world isn’t Prince Charmings, beautiful princesses, and evil queens that always lose. ‘The End’ isn’t ever the end because it’s a cycle of innocence, beauty, vanity, and then ultimately envy. Beautiful women are nothing more than an item; they rely on men and are not intelligent. They are envious, and full of vanity. The  perfect women doesn’t exist, and there will never be a happily ever after.

DBQ On Jacksonian Democrats Essay -- Advanced Placement US History

It is agreeable that the Jacksonian Democrats perceived themselves as strict guardians of the United States Constitution. It is not agreeable with how they went about preserving the political democracy, individual liberty, and equality of economic opportunity they stood for. While trying to create this balance, Jackson used tactics favorable only to his opinion. Jackson’s main idea was to rid of aristocracy, giving the power to the poorer classes, standing against rich white men. The flaw in their scheme was that the people who came up with this idea were all rich white men.   Ã‚  Ã‚  Ã‚  Ã‚  One of the Jacksonian Democrats’ attempts to reduce the influence of the rich was by vetoing the charter to the Bank of the United States. Jackson stated his reasons in Document B mainly as a precaution of...

Rick Hansen in Grania Litwin’s Perpetual Motion

Defeating fear in our minds is the biggest challenge. In Perpetual Motion, written by Crania Litton, Rick Hansen defeats the biggest challenge in both his body and his heart, and teaches people to find and achieve their life goals. His courage, perseverance and generosity mark him as one of the most venerable role model in human history. With a firm ambition and consistent strive, Hansen conquers a hardship which almost destructed his heart before. His courage and confidence brings positive influences to those who suffer from predicament and illuminates people to overcome difficulty bravely.When trapped in endless pain and despair, he did not give up himself; instead, he chose to â€Å"focus on something [he] could do, set goals. â€Å"(paragraph 1 7) Trampling down affliction by turning to improve himself is a great victory. This action inspires people to face challenge and surmount it by themselves. Hansen encourages people by both using his impressive experience and giving power ful words. He proves to the world that he is never defeated by physical disability: â€Å"He pushed his chair 40,000 kilometers around the globe, wrought 34 countries, up mountain ranges, through freezing blizzards and along the Great Wall. (paragraph 2) Also, he tells people to be brave in stepping towards their ambition and never think about failure because ‘the only thing that stops people reaching for their dream is fear of failure. â€Å"(paragraph 23) His success not only rehabilitates himself but also emanates hope to people who hesitate to take their first step towards their goal. Never stopping going forward, Hansen does not satisfy in making only himself successful. He aims to help more people who ever encounter same problems.Hansen founded Rick Hansen Man in Motion Foundation, whose â€Å"consciousness-raising efforts helped raise funding of $158 million. â€Å"(paragraph 9) His role model is as significant as the money he has granted to better â€Å"specialize d treatment centers, new imaging technology, exceptional neural and spinal surgeons. â€Å"(paragraph 8) Hansen persists to change the world with his endeavor and inspire people to live a better life. Even though in wheelchair, Rick Hansen still lives a much more fantastic life than most people. Never being defeated by fear and pursuing ambition no