Energy Systems Assignment Task

Energy Systems Assignment Task For example: goalie position is in the aerobic glycolysis (breakdown of glucose) system. They are treading water in one position until someone takes a shot. When someone takes a shot, the goalie has to react fast and powerful to get maximum power. Utility players are going as fast as possible for the entire game. Center forward plays at a med-high speed, generally in the anaerobic system throughout the entire game. 3. ATP-PC System ATP is a complex chemical compound stored in the mitochondria. The compound consists of a large molecule called adenosine (A) and three smaller molecules called phosphates (P). Each of the phosphates is held together by high energy bonds. Phosphate P P P ADENOSINE High Energy Bonds Energy When the last phosphate has detached, energy stored in bonds between the phosphates becomes available and this is transferred to the cells. In the Muscle cells, the energy from ATP allows the fibres to contract and make movement possible. The heat and energy are released as the bond between the two end phosphates breaks Adenosine Diphosphate High Energy Bonds P P ADENOSINE This is now referred to as ADP (adenosine diphosphate) because it doesnt have all three phosphates attached. You can gain the phosphate back by resting. When youre resting, creatine phosphate steps in and resynthesise, that is, reattaching the phosphate and restoring the ATP which has been party destroyed. Creatine and Phosphate are also held together by high energy bonds. High energy bonds C = P Creatine Phosphate The bond between creatine and phosphate breaks down, releasing energy. C P Energy The energy released drives the free phosphate (Pi) back to join ATP. P ADENOSINE P Pi ENERGY ATP is brought back to its normal form and the cycle is continued until CP/PC supplies are exhausted. Phosphate High Energy Bonds P P P ADENOSINE The ATP-PC/CP system is a predominant energy system when there is a swim off at the start of the game, when there is a fight for the ball, when there is high intensity sprinting for the ball against your opponent and when goalie is reaching for the ball to save. This system has no by products and last for around 10 seconds. 4. Lactic Acid System When you have gone through your ATP-PC system completely (CP is exhausted), you move into the next best system, anaerobic glycolysis/lactic acid. This system last for around 2min 90sec but it depends on the intensity of the workout. Lactic acid/anaerobic glycolysis system produces energy for high intensity activities to medium intensity activities. When youre working out in the anaerobic glycolysis system, the lactic acid builds up in your muscles because oxygen is not available. This causes a burning sensation, shortness in breath and fatigue. The lactic acid uses glycogen to produce energy. An example of lactic acid in water polo is when youre in defence, youre chasing the attacker for a time longer than 10 seconds, and hence youre in the anaerobic glycolysis system. This systems by product is lactic acid and the main fuel is carbohydrates. An advantage from this system is that it is fast and good for burning carbohydrates. A disadvantage from this system is that is only last for 10 seconds. This system is generally used in team sports. 5. Aerobic Glycolysis Workouts that last for a period of 3 minutes to 2 hours are in the aerobic system. This system is oxygen required and is used generally for slow egg beater/treading water or defence (water polo). There are 3 main fuels; the best is carbohydrates, then fats, then protein. The by products are sweat/H ²o and Co ². This system last from 3 minutes to 2 hours. This is an efficient system particularly for its long time frame and consistent speed. A disadvantage from this system is that it is at medium-low intensity. This system creates the highest amount of energy of the three, although it works at the lowest intensity. At the start of a workout, oxygen cannot reach the muscles until the next couple of minutes so you have to rely on the anaerobic systems for that short amount of time. The aerobic system is broken down into three sections: Glycolysis Krebs cycle/citric acid cycle Electron Transport Chain (ETC) Glycolysis Glycolysis is the breakdown of carbohydrates in the form of glycogen of glucose into pyruvic acid. The Krebs Cycle The Krebs cycle is the second phase in the process of aerobic metabolism. Pyruvic acid that was produced in the stage of glycolysis enters the mitochondria and is instantly converted to acetyl coenzyme which combines with oxaloacetic acid that forms citric acid. Other chemical reactions occur to make enough energy to resynthesise 2 ATP molecules. Other chemical reactions occur to resynthesise 2 ATP molecules. The by-products of this include CO2 (carbon dioxide), H (Hydrogen) this process is called a cycle because the the starting product is oxaloacetic acid is also the finishing product. Electron Transport Chain (ETC) The hydrogen from the krebs cycle is transported into the inner membranes of the mitochondria where it is split into a electron and a proton. The electrons are then put through a series of redox reactions. This releases quite a lot of energy and can resynthesise ATP. 6. Centre forward Centre forward is one of the hardest positions to be in. It takes up a lot of energy to play in. Centre forward sits in the opponents goals and wrestles for the ball until they get the ball and then sprints down to their goal to get in a good position to shoot. The predominant system theyre in is Lactic acid/anaerobic glycolysis. They do not get a long time to recover from this so sometimes they slip into aerobic glycolysis/oxygen system. When theyre sprinting, theyre at their full potential, so theyre using what is left of their energy, therefore they are in their ATP system. ATP Lactic Acid Oxygen 10% 60% 30% 7. Lactic Acid Build Up The percentage of lactic acid is reasonably high (60%) during a centre forwards game. This may bring them down so theyre in the oxygen system for the other percentage of time. The build-up of lactic acid is bringing down their potential to play at their best. To be able to play more, they need to have a recovery. Theyre in recovery time when theyre waiting to tackle for the ball. This is the only time they basically get to recover. Oxygen is the key to getting rid of lactic acid. You need a minute to get enough into you to recover.

Business Modeling Essay

Ted Ralley is working on conducting a forecast for the upcoming year for an automobile part company. The data that will be used for this research has been collected from the quarterly sales from the previous four years. Ted wants to determine what is most accurate way to determine the forecast for 2008. The model should also help determined if the economic situation and oil prices are affecting significantly the sales of the company. The two models that were provided were thoroughly analyzed to determine which model was the most appropriate to utilize. These models were a regression model with factors, seasons and an additive Holt-Winters model. The forecasts also show that there is a significant change in the sales with the economic hardship and oil prices. It was concluded that the Regression with Econometric Variables would be the best method to use to forecast the sales for 2008, estimating a 255,927,955 for that year. Background With the economy continuously deteriorating everyone seems to be getting hurt financially, even the automotive industry, which has deepening the economic recession. Automotive part suppliers continued to experience heavy debt and overcapacity caused by production cuts by automakers, specifically including the big 3 (Ford Motor Company, General Motors and Chrysler). The suppliers  are also being pressed by higher energy and input materials’ costs. It has been determined by Industry analyst that automotive companies that accounted for more than $72 billion in sales have filed for chapter 11 protections in 2008. The number of Bankruptcies will continue to rise as the years go by. Domestically, Losing the big 3 to U.S affiliates of foreign- based manufacturers and imports in 2008 have caused a dramatic 50% drop in the market share. Most US suppliers are dependent on these three companies aforementioned. U.S suppliers are currently facing the challenge of penetrating automakers’ supply chains, mostly because these relationships have been long-established with home-market supplies. Ted Ralley is the director of a marketing research for a manufacturer of spare automobiles parts and it’s working on conducting a forecast for the upcoming year. Ted is aware of the forecasting errors and how costly they can be which is why these numbers must be as accurate as possible. In order to perform this forecast, Ted has collected the data on quarterly sales for the previous four years and ran several forecasts using time series forecasting methods. Ted noticed that economic activity and oil prices have impacted significantly the auto part sales and decided that the forecast will be more accurate using econometric variables. Problem Will the econometric variables be a better predictor of sales for the coming year, given the current economic activity and oil prices? Analysis This analysis consisted of the evaluation of the regression model with factors, seasons and the additive Holt-Winters method to generate an accurate forecast of how econometric variables have affected the Auto Parts industry. The analysis involved calculating the errors metrics for the three models (mean absolute percentage error (MAPE), root mean square error (RMSE), MAPE and Theils’ U-statistics (U)) and comparing them against each other. The error metrics were calculated by using the formulas shown below: Table 1.1 Error Metrics Formulas: After studying the data provided it could be determined that there is an upward trend with obvious seasonality. Another factor that played a role in these regressions was the removal of the first two years in order to meet Holt-Winters method guidelines. The first regression was conducted using  Factors was generated by utilizing the data that provided by Ted Ralley from a large manufacturer of spare auto parts for automobiles. The data consisting of the quarterly sales for the previous four years was the dependent variables and independent variables consisted of Time, quarter 2, quarter 3, quarter 4. In this regression quarter 1 was removed in order to avoid over forecasting and binary coding was used to generate dummy factors. After the regression was completed, the independent variables were tested to determine their significance, which was done by performing a regression on the data through Microsoft Excel. Quarter 4 was removed from the model due to the fact that it was statis tically insignificant. This was determined by using backward elimination, which means, a variable that has a P-Value that is greater than .05, is considered insignificant and should be removed from the data and a new regression should be completed. The results from the new regression, shown below, have a P-Value less than .05 being sufficient to reject the null hypothesis (Ha). A very strong positive linear correlation between sales and all the independent variables combined with a 95.47%, leaving an unexplained variance of 4.53 is also demonstrated. According to the textbook â€Å"the most common measure of overall fit is the coefficient of determination (R2)†. Another important measure is the â€Å"standard error (Se), which is derived from the sum of squared residuals for n observations and k predictors† (Poane, Seward, 2013). A smaller Se Indicates a better fit, in this case the Se will be off by around 3.9 million. The coefficients used to run the forecast for 2008 are the following: intercept coefficient + coefficient time x time 1 plus coefficient q2* code for Q2 dummy variable for q2 + plus coefficient q3. Square error was used to find the magnitude of the error; the absolute value of the error to the sale s was found and then preceded to calculate to numerator. Numerator and denominator will be calculated in other to use Thiels’ U. Numerator was calculated as follow: difference between sales minus the sale of initial sale (difference q1-2 sales) /divided by q1 and squared. Bibliography Poane, D., & Seward, L. E. (2013). Business Modeling Customized Readings for QNT5040. : Mc Graw Hill Education. Microsoft Office Excel. (2007). Redmond, WA: Microsoft Corporation. Albright, Winston & Zappe (2010). Business Modeling, Selections from 4e – QNT 5040 (4th ed.). Mason: Cengage Learning. Aczel,A & Sounderpandian,J (2009). Complete Business Statistics 7th edition (592). : Mc Graw Hill Education. U.S. Automotive Parts Industry Annual Assessment. (2009, April 1). . Retrieved June 6, 2014, from http://trade.gov/mas/manufacturing/OAAI/build/groups/public/@tg_oaai/documents/webcontent/tg_oaai_003759.pdf

The Essential Role Of Stereotype In Propaganda Essay

The Essential Role Of Stereotype In Propaganda People encounter propaganda and stereotypes in their daily lifestyle from social interaction with peers to family and the media. Propaganda and stereotype are correlative; however their conceptual fundaments are different. Propaganda is a systematic manipulation of public opinion that is consciously disseminated to promote a doctrine or cause. Contemporary propaganda deliberately attempts to alter peoples’ opinion and influence human behaviour through common broadcasters such as â€Å"politicians, advertisers, journalists, and radio personalities† (Delwiche 2002). Stereotype is defined as â€Å"a conventional, formulaic and over simplified conception, opinion or image† (Dictionary.com 2004). These†¦show more content†¦Propaganda technique will be succussfully implemented if the dogma is deliberate and targeted to a group with an intention or purpose on mind. Ethnic stereotypes are portrayed differently by society because it consists of negative and positive connotations. An individual with a Middle East ethnicity is stereotyped as an Arab, regardless of the different countries within the region, which contains diverse cultures, beliefs and extensive religions. Some of the generalizations of this ethnic group comprise of Arabs inheriting wealth from a natural resource: oil, being a fundamentalist, and criminals. This reflects an example of oversimplification because â€Å"favourable generalities are used to provide simple answers to complex social, political, economic, or military problems† (Disinfopedia 2004). However, the media broadcasts propaganda by primarily associating Arabs with violence, which defames their identity. America’s president, Bush, strategically campaigned in â€Å"a television advertisement [showing] the face of a young Middle Eastern† (Krupa 2004) The advertisements depicts the generalization th at all middle eastern men are threats to America. The negative stereotype of Arabs correlates with propaganda, because the advertisement implemented in the campaign was a tactic of mass persuasion, intended to sway the opinion of American viewers, regarding the threats that Arabs imposed on the welfare of American citizens. Bush’sShow MoreRelatedMovie Analysis : The World Apart 1739 Words   |  7 Pagesemotional and physical characters. Men usually play the role of the hero, and usually following a journey to success. Men sometimes were defined by what the females lacked, and women were tied to their male lover. As time passed, women’s images remained the same as the gender gap grew. Women’s roles have always been tied to the male counterparts relationship. 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A Community Assessment Highlights The Needs Of The Community

A community assessment highlights the needs of the community. The main purpose of this assessment is to understand the reasons of occurrence of issues and implement methods to reduce these issues that may rise from those needs. Understanding the conditions of environment in which members of these community lives in, and how it impacts the members’ lives is essential in providing proper and effective care to their health. I will focus on Queens Community Board One for this Windshield Assessment. I have chosen this community because for the past 20 years of my life I have lived in both Long Island City and Astoria, which are two neighborhoods pertaining to this community. I have witnessed drastic changes throughout the years that have change†¦show more content†¦Throughout the community, there are many variations to the quality of infrastructure. There are a lower percentage of homes in the community with maintenance defects, such as the presence of mice and rats, inade quate heating and water leaks, compared to New York City. The quality of the infrastructures in the five New York City Housing buildings, including Astoria, Queensbridge South and North, Ravenswood and Woodside, are in fair conditions. Astoria and Queensbridge housing buildings are near the East River. Ravenswood Housing Buildings are located in 21st between 34th and 36th Avenue while the Woodside housing buildings are located at 49th street between 31st Avenue and Broadway. These steep housing buildings are well maintained yet are still old. A few residents of the Astoria housing reported constant issues with the elevator not working and cockroaches appearing in their apartments. This can have negative health impacts, such as asthma, that can be triggered by roaches. 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