case study statistic

case study statistic Student ID: 2150586 PM 503 SS3 2T Tutor: Alan D. LoganModule Code: PM 011 - 2T(SS3)Class Group: Group ZModule Title: Statistical Design for Science and EngineeringAssessment: Case studyAssignment Title: the quality of water in the reservoirs supplyingthe Greater Glasgow areaTutor Name: Alan D. LoganDate of Submission: July 31th, 2014IntroductionDue to the task of rising living standard in the Greater Glasgow, Scottish Water has launched a project to study the quality of water in the reservoirs supplying Glasgow. The project leader believed that the water quality should be highest when the surface area of a reservoirs is small. However, the Scottish Water Director seemed to be unsatisfied with the conclusion of the project leader due to the lack of statistical analysis. Subsequently, a statistical investigation has been started. The investigation data was gathering from 49 reservoirs with fresh drinkable water in different location around Glasgow.In addition, the criterion 'Index of B iotic Integrity' or IBI has been applied for the study to measure the water quality.The date have been demonstrated in two tables (see Appendix 1). Table 1 show IBI score of 24 "treatment" reservoirs where the water was treated using chemical to eliminated bacteria before it was stored into the reservoirs. The table 2 displayed the information about 25 other "non-treatment" reservoirs which is treated after the water left the reservoirs. The tables have two columns which are the measure of reservoir's surface area and the IBI score. The second aim of this research is to give recommendationThis paper has two aims. The first aim is to analyzing and evaluating the effect of surface area on the quality of water, to be more specific, the IBI score. If there are statistical evidence of other possible influences of...

Erich Hartmann - World War II Ace - Luftwaffe

Erich Hartmann - World War II Ace - Luftwaffe Erich Hartmann - Early Life Career: Born April 19, 1922, Erich Hartmann was the son of Dr. Alfred and Elisabeth Hartmann. Though born in Weissach, Wà ¼rttemberg, Hartmann and his family moved to Changsha, China shortly thereafter due to the severe economic depression that struck Germany in the years after World War I. Residing in a house on the Xiang River, the Hartmanns lived a quiet life while Alfred established his medical practice. This existence came to an end in 1928 when the family was forced to flee back to Germany following the outbreak of the Chinese Civil War. Sent to school in Weil im Schà ¶nbuch, Erich later attended schools in Bà ¶blingen, Rottweil, and Korntal. Erich Hartmann - Learning to Fly: As a child, Hartmann was first exposed to flying by his mother who was one of Germanys first female glider pilots. Learning from Elisabeth, he received his glider pilots license in 1936. That same year, she opened a flying school Weil im Schà ¶nbuch with the support of the Nazi government. Though young, Hartmann served as one of the schools instructors. Three years later, he earned his pilots license and was permitted to fly powered aircraft. With the beginning of World War II, Hartmann entered the Luftwaffe. Commencing training on October 1, 1940, he initially received an assignment to the 10th Flying Regiment in Neukuhren. The following year saw him move through a series of flight and fighter schools. n March 1942, Hartmann arrived at Zerbst-Anhalt for training on the Messerschmitt Bf 109. On March 31, he violated regulations by performing aerobatics over the airfield. Sanctioned to confinement and fines, the incident taught him self-discipline. In a twist of fate, the confinement saved Hartmanns life when a comrade was killed flying a training mission in his aircraft. Graduating in August, he had built a reputation as a skilled marksman and was assigned to Fighter Supply Group, East in Upper Silesia. In October, Hartmann received new orders assigning him to Jagdgeschwader 52 in Maykop, Soviet Union. Arriving on the Eastern Front, he was placed in Major Hubertus von Bonins III./JG 52 and mentored by Oberfeldwebel Edmund Roßmann. Erich Hartmann - Becoming an Ace: Entering combat on October 14, Hartmann performed poorly and crashed his Bf 109 when it ran out of fuel. For this transgression, von Bonin made him work for three days with the ground crew. Resuming combat flying, Hartmann scored his first kill on November 5 when he downed an Ilyushin Il-2. He shot down an additional aircraft before the end of the year. Gaining in skill and learning from skilled compatriots such as Alfred Grislawski and Walter Krupinski, Hartmann became more successful in early 1943. By the end of April he had become an ace and his tally stood at 11. Repeatedly encouraged to get closer to enemy aircraft by Krupinski, Hartmann developed his philosophy of when he [the enemy] fills the entire windscreen you cant miss. Using this approach, Hartmann began rapidly increasing his tally as Soviet aircraft fell before his guns. In the fighting that occurred during the Battle of Kursk that summer, his total reached 50. By August 19, Hartmann had downed another 40 Soviet aircraft. On that date, Hartmann was aiding in supporting a flight of Ju 87 Stuka dive bombers when the Germans encountered a large formation of Soviet aircraft. In the resulting fight, Hartmanns aircraft was badly damaged by debris and he came down behind enemy lines. Quickly captured, he feigned internal injuries and was placed in a truck. Later in the day, during a Stuka attack, Hartmann jumped his guard and escaped. Moving west, he successfully reached German lines and returned to his unit. Erich Hartmann - The Black Devil: Resuming combat operations, Hartmann was awarded the Knights Cross on October 29 when his kill total numbered 148. This number increased to 159 by January 1 and the first two months of 1944 saw him shoot down another 50 Soviet planes. An aerial celebrity on the Eastern Front, Hartmann was known by his call sign Karaya 1 and the distinctive black tulip design that was painted around the engine cowling of his aircraft. Feared by the Russians, they gave the German pilot the sobriquet The Black Devil and avoided combat when his Bf 109 was spotted. In March 1944, Hartmann and several other aces were ordered to Hitlers Berghof in Berchtesgaden to receive awards. At this time, Hartmann was presented with the Oak Leaves to the Knights Cross. Returning to JG 52, Hartmann began engaging American aircraft in the skies over Romania. Clashing with a group of P-51 Mustangs on May 21 near Bucharest, he scored his first two American kills. Four more fell to his guns on June 1 near PloieÅŸti. Continuing to run up his tally, he reached 274 on August 17 to become the top-scorer of the war. On the 24th, Hartmann downed 11 aircraft to reach 301 victories. In the wake of this achievement, Reichsmarschall Hermann Gà ¶ring immediately grounded him rather than risk his death and a blow to Luftwaffe morale. Summoned to the Wolfs Lair in Rastenburg, Hartmann was given the Diamonds to his Knights Cross by Hitler as well as a ten-day leave. During this period, the Luftwaffes Inspector of Fighters, Adolf Galland, met with Hartmann and asked him to transfer to the Messerschmitt Me 262 jet program. Erich Hartmann - Final Actions: Though flattered, Hartmann declined this invitation as he preferred to stay with JG 52. Galland again approached him in March 1945 with the same offer and was again rebuffed. Slowly increasing his total through the winter and spring, Hartmann reached 350 on April 17. With the war winding down, he scored his 352nd and final victory on May 8. Finding two Soviet fighters performing aerobatics on the last day of the war, he attacked and downed one. He was prevented in claiming the other by the arrival of American P-51s. Returning to base, he directed his men to destroy their aircraft before moving west to surrender to the US 90th Infantry Division. Though he had surrendered to the Americans, the terms of the Yalta Conference dictated that units that had largely fought on the Eastern Front were to capitulate to the Soviets. As a result, Hartmann and his men were turned over to the Red Army. Erich Hartmann - Postwar: Entering Soviet custody, Hartmann was threatened and interrogated on several occasions as the Red Army attempted to compel him to join the newly formed East German Air Force. Resisting, he was charged with bogus war crimes which included killing civilians, bombing a bread factory, and destroying Soviet aircraft. Found guilty after a show trial, Hartmann was sentenced to twenty-five years of hard labor. Moved between work camps, he was finally released in 1955 with the aid of West German Chancellor Conrad Adenauer. Returning to Germany, he was among the last prisoners of war to be released by the Soviet Union. After recovering from his ordeal, he joined the West German Bundesluftwaffe. Given command of the services first all-jet squadron, Jagdgeschwader 71 Richthofen, Hartmann had the noses of their Canadair F-86 Sabres painted with his distinctive black tulip design. In the early 1960s, Hartmann vigorously opposed the Bundesluftwaffes purchase and adoption of the Lockheed F-104 Starfighter as he believed the aircraft to be unsafe. Overruled, his concerns proved true when over 100 German pilots were lost in F-104-related accidents. Increasingly unpopular with his superiors due to continued criticism of the aircraft, Hartmann was forced into early retirement in 1970 with the rank of colonel. Becoming a flight instructor in Bonn, Hartmann flew demonstration shows with Galland until 1974. Grounded in 1980 due to heart problems, he resumed flying three years later. Increasingly withdrawing from public life, Hartmann died on September 20, 1993 in Weil im Schà ¶nbuch. The highest scoring ace of all-time, Hartmann was never downed by enemy fire and never had a wingman killed. Selected Sources Aces of World War II: Erich HartmannLuftwaffe: Erich HartmannWorld War II: Erich Hartmann