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Free research papers and essays on topics related to: decomposition

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  • Classical Decomposition Model - 1,191 words
    Classical Decomposition Model For this paper I have gathered quarterly data on the sales of Calloway Golf Company from 1995 to the third quarter of 1999,and will attempt to fit a time series model using the Classical Decomposition Method, which uses a multifactor model shown below: Yt = f(T,C,S,e) where Yt = actual value of the time series at time t f = mathematical function of T = trend C = cyclical influences S = seasonal influences e = error The trend component (T) in a time series is the long-run general movement caused by long-term economic, demographic, weather and technological movements. The cyclical component (C) is an influence of about three to nine years caused by economic, demog ...
    Related: classical, decomposition, major differences, linear regression, differ
  • Roe Decomposition - 312 words
    Roe Decomposition Du pont decomposition of ROE LA Gears ROE has decreased over the last three years from 49.45% in 1988 to 15.22% in 1990. Profitability (NI/Sales) has also fallen dramatically from 9.8 % in 1988 to 3.47% in 1990. Asset turnover has increased from 1.69 to 2.48, because while sales have quadrupled, total assets have only increased by about 2.7 times. Profitability The gross profit margin has dropped from 42.29% in 1988 to 34.41% in 1990. LA Gears operating profit margin has decreased from 18.52% to 7.75%. This is due to a dramatic increase in operating expenses. The decreasing net profit margins (9.85% to 3.47%) is due to lower gross profit margins and expenses. Net profit mar ...
    Related: decomposition, current assets, gross profit, inventory turnover, fallen
  • Acid Rain - 999 words
    ... an affect the fish in the water in two ways: directly and indirectly. Sulfuric acid directly interferes with the fish's ability to take in salt, oxygen and nutrients crucial for daily life. Osmoregulation is the process of maintaining the delicate balance of salts and minerals in their tissues. For freshwater fish, maintaining osmoregulation is key in their survival. Acid molecules, which are a result of acid rain in the water, cause mucus to form in the fishs gills. This in return prevents the fish from absorbing oxygen. If the fish are unable to absorb oxygen, the consequence could be the eventual suffocation of fish and the low pH could throw off the balance of salts in the fish tissu ...
    Related: acid, acid rain, rain, new media, modern society
  • Acid Rain - 995 words
    ... ish in the water in two ways: directly and indirectly. Sulfuric acid directly interferes with the fish's ability to take in salt, oxygen and nutrients crucial for daily life. Osmoregulation is the process of maintaining the delicate balance of salts and minerals in their tissues. For freshwater fish, maintaining osmoregulation is key in their survival. Acid molecules, which are a result of acid rain in the water, cause mucus to form in the fishs gills. This in return prevents the fish from absorbing oxygen. If the fish are unable to absorb oxygen, the consequence could be the eventual suffocation of fish and the low pH could throw off the balance of salts in the fish tissue. Salt levels ...
    Related: acid, acid rain, rain, modern society, staying alive
  • Acid Rain - 1,829 words
    ... . These particles collect on the leaves of the tree, and studies have shown that when these particles contain acid they can cause damage to the leaves. The leaves are the part of the tree that help make food, hence any damage to the leaves will result in harm to the health of the entire tree. Coniferous trees are vulnerable to the harmful effects of acid rain as well. The tree's needles are designed to nourish the tree after they fall to the ground. Each needle houses whole colonies of microscopic bacteria and algae that help the tree change nitrogen into food at the roots. Acid rain will often burn away this material, thereby reducing adequate food supply, and weakening the tree's healt ...
    Related: acid, acid rain, rain, eastern canada, human health
  • Acid Rain - 1,731 words
    Acid Rain Introduction: What Causes Acid Rain? One of the main causes of acid rain is sulfur dioxide. Natural sources, which emit this gas, are Volcanoes, sea spray, rotting vegetation and plankton. However, the burning of fossil fuels, such as Coal and oil, are largely to be blamed for approximately half of the emissions of this gas in the world. When sulfur dioxide reaches the atmosphere, it oxidizes to first form a sulfate ion. It then Becomes sulfuric acid as it joins with hydrogen atoms in the air and falls back down to earth. Oxidation occurs the most in clouds and especially in heavily polluted air where other compounds such as ammonia and ozone help to catalyze the reaction, changing ...
    Related: acid, acid rain, rain, case study, ohio river
  • Acid Rain And North America - 1,891 words
    Acid Rain And North America In the past century, one of the greatest threats to North America's aquatic ecosystem has been the widespread acidification of hundreds of thousands of waterways. Acid rain has effected plant and animal life within aquatic ecosystems, as well as microbiologic activity by affecting the rates of decomposition and the accumulation of organic matter. What causes this poisonous rain, and what can be done to improve North America's water quality and prevent future catastrophes? To answer these questions, we must first examine the cause and formation of acid rain, as well as understand ways to decrease or prevent its formation. Formation of acid rain. Acid deposition, mo ...
    Related: acid, acid rain, america, north america, rain
  • Adipic Acid - 1,071 words
    Adipic Acid SWOSU ICER98 submitted 2/23/98 Bart Barnett, Bill McKinley, Darren Toczko, Kevin Worley Adipic acid is one of the most used chemicals in the world today, conversly, it contributes significantly to the production of nitrous oxides (NOx), a greenhouse gas. Many methods are available to produce adipic acid, with various results and potential for pollution. The following paper discusses the impacts that adipic acid has on our society and the world's environment. At the end of the paper, is a list of some of the sources used for this topic. Any disagreements between the various sections of this article probably resulted from this being a group effort. Uses Adipic acid is a very import ...
    Related: acid, world today, western europe, united state, cable
  • Air Pollution - 281 words
    Air Pollution CHEMISTRY IS THE STUDY OF MATTER ANDTHE CHANGES IT UNDERGOES. THESE CHANGES OCCUR WHEN THE ATOMS OF A SUBSTANCE ARE REARRANGED TOMAKE A NEW SUBSTANCE. THIS IS CLASSIFIED AS A CHEMICAL REACTION. BUT BEFORE YOU GET INTO A CHEMICAL REACTION YOU MUST LEARN ABOUT WHAT MAKES UP A CHEMICAL SUBSTANCE. mATTER IS VERY IMPORTANT IN THE SUBJECT OF CHEMISTRY. MATTER IS ANYTHING THAT TAKES UP SPACE. MATTER CANNOT BE CREATED NOR DESTROYED PHISICALLY OR CHEMICALLY. ANOTHER CRITICAL OBJECT IN HEMISRTY ID THE ATOM. THE ATOM WAS DISCOVEREC MY A GREEK PHILOSOPHER NAMED DEMOCRATIS. DURING HIS TIME DEMOCRATIS DID NOT PUBLICALLY ANNOUNCE HIS THEORY OF THE ATOM. iN HIS THEORY KNOWN AS THE ATOMIC THEOR ...
    Related: air pollution, pollution, greek philosopher, classified, critical
  • Ascertain Cause, Manner, And Time Of Death - 776 words
    Ascertain Cause, Manner, And Time Of Death Ascertain cause, Manner, and Time of Death The Presumptive Sings of Death include cessation of respiration, cessation of heartbeat, changes in the eyes, and cooling of the body. Positive signs of death indicate that death has occurred. This includes postmortem lividity, postmortem rigidity, instantaneous rigor, postmortem decomposition, and insect invasion. All of these signs of death can help you determine time, cause, and manor of death. Cessation of respiration is the apparent lack of breathing. In certain types of death like electrocution and drowning, the victim may not be breathing but life may still exist. To determine if breathing is occurri ...
    Related: ascertain, environmental factors, american history, cool, mouth
  • Aztec Nation - 2,986 words
    Aztec Nation The Aztec Nation A distant sound is heard. It sounds like a deep drum being hit with a heavy instrument. You hear it again and strain your eyes in the direction of the sound. All around you is dense jungle. Snakes slither between your legs. You hear the sound once again. In front of you is a dense stand of ferns. You part them and look down into a wide open valley. The valley gets so wide and it is so green that it takes your breath away. But that is not what you are looking at. You are staring at a huge city with glittering buildings shining in the spring sunlight. Smoke rises up from some of the many houses. You can see and hear children playing in the wide open fields in fron ...
    Related: aztec, aztec empire, aztec gods, aztec religion, long history
  • Bacteria Are Often Maligned As The Causes Of Human And Animal Disease Like This One, Leptospira, Which Causes Serious Disease - 793 words
    Bacteria are often maligned as the causes of human and animal disease (like this one, Leptospira, which causes serious disease in livestock). However, certain bacteria, the actinomycetes, produce antibiotics such as streptomycin and nocardicin; others live symbiotically in the guts of animals (including humans) or elsewhere in their bodies, or on the roots of certain plants, converting nitrogen into a usable form. Bacteria put the tang in yogurt and the sour in sourdough bread; bacteria help to break down dead organic matter; bacteria make up the base of the food web in many environments. Bacteria are of such immense importance because of their extreme flexibility, capacity for rapid growth ...
    Related: bacteria, food poisoning, carbon dioxide, organisms, streptococcus
  • Cells Of The Human Body - 2,204 words
    ... lum of skeletal muscle stores calcium ions that function in muscle contraction. GOLGI APPARATUS The Golgi apparatus is composed of flattened membranous sacs, containing cisternae, that are stacked on each other like dinner plates. The Golgi apparatus modifies, packages, and distributes proteins and lipids manufactured by the rough and smooth endoplasmic reticula. Proteins produced at the ribosomes of the rough endoplasmic reticulum are surrounded by a vesicle, or little sac, that forms from the membrane of the endoplasmic reticulum. The vesicle moves to the Golgi apparatus, fuses with the membrane of the Golgi apparatus, and releases the protein into the cisterna of the Golgi apparatus. ...
    Related: blood cells, cell division, human body, white blood cells, health care
  • Chemical Reactions - 1,932 words
    Chemical Reactions Chemical reactions are the heart of chemistry. People have always known that they exist. The Ancient Greeks were the firsts to speculate on the composition of matter. They thought that it was possible that individual particles made up matter. Later, in the Seventeenth Century, a German chemist named Georg Ernst Stahl was the first to postulate on chemical reaction, specifically, combustion. He said that a substance called phlogiston escaped into the air from all substances during combustion. He explained that a burning candle would go out if a candle snuffer was put over it because the air inside the snuffer became saturated with phlogiston. According to his ideas, wood is ...
    Related: nineteenth century, seventeenth century, eighteenth century, urge, combustion
  • Chemical Reactions - 390 words
    Chemical Reactions Chemical reactions are the heart of chemistry. People have always known that they exist. The Ancient Greeks were the first to speculate on the composition of matter. They thought that it was possible that individual particles made up matter. Later, in the Seventeenth Century, a German chemist named George Ernst Stahl was the first to postulate on chemical reaction. He said that a substance called phlogiston escaped into the air from all substances during combustion. He explained that a burning candle would go out if a candle snuffer was put over it because the air inside the snuffer became saturated with phlogiston. Stahl also said that phlogiston will take away from a sub ...
    Related: john dalton, eighteenth century, different types, classify, burning
  • Cicero, Was Truly A Man Of The State His Writings Also Show Us He Was Equally A Man Of Philosophical Temperament And Affluenc - 1,955 words
    Cicero, was truly a man of the state. His writings also show us he was equally a man of philosophical temperament and affluence. Yet at times these two forces within Cicero clash and contradict with the early stoic teachings. Cicero gradually adopted the stoic lifestyle but not altogether entirely, and this is somewhat due to the fact of what it was like to be a roman of the time. The morals of everyday Rome conflicted with some of the stoic ideals that were set by early stoicism. Thus, Cicero changed the face of stoicism by romanizing it; redefining stoicism into the middle phase. Of Cicero it can be said he possessed a bias towards roman life and doctrine. For Cicero every answer lay withi ...
    Related: ideal state, philosophical, temperament, ideal society, roman society
  • Clouded Atmosphere - 1,110 words
    Clouded Atmosphere Clouded Atmosphere The concentration of the atmosphere's main greenhouse gases specifically, carbon dioxide, methane, nitrous oxide, and water vapor, have increased significantly during the industrial age. These high concentrations are predicted to continue in the atmosphere for thousands of years to come. This increase in specially carbon dioxide, increases the infrared energy taken in by the atmosphere, and warming the earth's surface. The Global mean temperature over the past 150 years has risen between 0.3 degrees C and 0.6 degrees C. Climate changes that have been predicted are based on the continual rise in Green House Gases. These changes include changes in: increas ...
    Related: atmosphere, air temperature, solar radiation, climate change, instructor
  • Costa Rica - 1,240 words
    Costa Rica Greg Coffta Bio190/Costa Rican Adventures 11/30/1999 Part I Banana: Bananas were most likely picked up by the European traders in Southeast Asia when in search for spices. Soon, as the discovery of the Tropics arrived, traders took bananas to Central America. Breadfruit: this fruit commonly grows among the southern Pacific islands, and it probably found its way to Costa Rica when the natives started to explore on boat. Chocolate: as far as I could find, chocolate is native to Central America. It comes from the fruit of the Cacao Tree, and was traditionally used by the Aztecs. Coconuts: Coconuts also come from Tropical Pacific islands, and the actual coconut itself probably floated ...
    Related: costa, costa rica, costa rican, rica, pacific islands
  • Death Penalty - 1,737 words
    Death Penalty In our understandable desire to be fair and to protect the rights of offenders in our criminal justice system, let us never ignore or minimize the rights of their victims. The death penalty is a necessary tool that reaffirms the sanctity of human life while assuring that convicted killers will never again prey upon others. Through the death penalty many families of victims find solace and retribution by seeking to put an end to it all; the sleepless nights, the terrifying nightmares of what their son, daughter, wife, husband, sister, brother, aunt, uncle, cousin or friend went through and the constant reminder of why their loved ones arent with them. In June 1997, a parade of w ...
    Related: death penalty, penalty, baptist church, last time, electrical
  • Effects Of Acid Rain On North Americas Aquatic Ecosystems - 1,898 words
    Effects Of Acid Rain On North America's Aquatic Ecosystems In the past century, one of the greatest threats to North America's aquatic ecosystem has been the widespread acidification of hundreds of thousands of waterways. Acid rain has effected plant and animal life within aquatic ecosystems, as well as microbiologic activity by affecting the rates of decomposition and the accumulation of organic matter. What causes this poisonous rain, and what can be done to improve North America's water quality and prevent future catastrophes? To answer these questions, we must first examine the cause and formation of acid rain, as well as understand ways to decrease or prevent its formation. Formation of ...
    Related: acid, acid rain, americas, aquatic, aquatic ecosystems, ecosystems, north america
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