Time Series Analysis Essay Example | Topics and Well Written Essays - 1000 words

Time Series Analysis - Essay ExampleThis presentation can be used to model many time series procedures and as an identifying tool of a model in the auto- covariance function. ARIMA (1, 1, 1) vs. ARIMA (0, 1, 2) The ARIMA models as observed help in accommodate provided data with the condition that the data is not stationary. There are many models of the ARIMA but in our case we will discuss ARIMA (1, 1, 1) and ARIMA (0, 1, 2) looking at the trees presented with pertinent discussion about them. ARIMA (1, 1, 1) is also referred to as the mixed model, this is due to the fact that as depicted from the graphs by the 9 trees, we see he features of both the autoregressive and sorrowful average models brought together to form a single model. ARIMA (1, 1, 1) which is non-linear in nature can be used to define the data set that shows unpredictable bursts, outliers and highly flat stretches at quite irregular time intervals (Cromwell, 1994). The data may have been collected from the economic unit variables like those for the pricing of items like onion plantns and their variations in the market. The research may have also been conducted in conjunction of other extreme models like the Gaussian Mixture Transition (GMTD), Mixed Autoregressive (MAR) as well as MAR-Autoregressive Conditional Heteroscedastic (MAR-ARCH), the differences are determined and graphs depicting differences depicted as in the Trees 1-9 ARIMA (1, 1, 1). The graphs represented by the numbers and the progress show an eliminating propensity with quite seasonal fluctuations as shown from the fittings in the Box-Jenkins hence residual series (Vandaele, 1983). The figures and graphs from the trees 1-9 are employed in testing for non-seasonality or seasonality in the respective random trends with the appropriate filters being used through the Box-Jenkins model examining the same. Trees 1-9 show us that the Lagrange multiplier (LM) is used to define ARCH while the value parameters are quantified utilise Ex pectation maximization (EM) (Cromwell, 1994). The figures, graphs and diagrams show a case where out of sample forecasting the first and the second steps and there after a impartial approach devised in forming a conclusion. With ARIMA (0, 1, 2) on the other hand, we ask ourselves how the data would look like, and the pattern that would exist. As shown by the trees 1-9, the data is non-stationery as show by the linear filters and transfer functions indicating smoothing potentials. From the tools, that is the plots of data and both the PACF and ACF, the evidence for the claims above are vividly observable by the graphical trends and the trends by ACF of residuals, standardized residuals and p set for Ljung box (Cromwell, 1994). The models of ARIMA (0, 1, 2) as opposed to that of the ARIMA (1, 1, 1) has its parameters estimated using a statistical software with the outputs indicated on the representation showing outputs for parameter estimates, test statistics, goodness of fits, diag nostics and residuals. either the above parameters are highly non-stationery as well (Vandaele, 1983). In both the models, it is to be determined whether they fit data by correctly extracting all learning and ensuring that residuals as shown are a white noise. The key measures in both the models are the ACF, standardized

Nature in Religion Essay Example | Topics and Well Written Essays - 500 words

Nature in Religion - Essay ExampleEach one has their own specific historic development, which was influenced by events in being history. In terms of indigenous cultures such as Native Americans, they developed very differently compared to their other religious counterparts. They were extremely influenced by nature and the elements, which preceded the need of a shaman, compared to a priest or another spiritual leader. Shamans were important because they helped keep tradition and rituals alive and passed down the spiritual knowledge through the other members of the tribe. bid stated previously, the Native Americans in particular placed a great deal of spiritual and religious influence in nature. This is because many of the traditions and rituals reside in the themes of nature. Myths, such as the creation stories, result from themes in nature such as the cycles of the seasons, which undergo in the climate. Many tribes also use features such as reincarnation, which influenced by nature , shows that when we die, we are born into a cycle of rebirthing where we come back as another creature. Shamans were also used to communicate with nature and the spirits of the world and animals. These would be invoked for good fortune for healing, for bountiful harvest and for other ceremonies (Matthews, 2008).

Assignment Lab Report Example | Topics and Well Written Essays - 750 words

Assignment - Lab Report ExampleThe main attributes of a catalyst are a. It is not used up during the chemical chemical reaction and can be recovered at the end of the reaction. b. It also lowers the activation energy for the chemic reaction to yield products. 4. Explain gas chromatography? How does it work? Chromatography in general is a laboratory technique for withdrawal of diversenesss. Gas chromatography is an analytical technique that involves separation of substances by analyzing the volatility of the components of the mixture. It works by having a stationary phase contained in columns like capillary tube or test tubes coated on their walls. The mobile phase which is the more volatile substances moves past the stationary phase. Sensitive electronic detectors or sensors installed in the device detects and identifies the various gases composed in the mixture as they travel along the column and emerge out of the tube. Detection of substances creates peaks as outputs which can b e used for the analysis. The following questions can be answered aft(prenominal) the experiment 5. Did the reaction between acetic acid and ethanol produce ethyl acetate? Explain how you used chromatographical information to analyze the esterification reaction. The reaction between acetic acid and ethanol was able to yield ethyl acetate. This was observed through the fruit flavor smell that was produced during the experiment. Based on the data gathered from gas chromatography, the first set of peaks created without the esterification process, were made as standards to fall upon the three substances acetic acid, ethanol and ethyl acetate. Every substance has unique peaks to identify them from each other. When esterification was done, it was observed that there is dominant presence of the ethyl acetate based on the output peaks. The rates were different for every test tube. The results of chromatographic data showed that there are more peaks identified as ethyl acetate. Therefore, esterification process is taking place producing ethyl acetate. 6. Name 3 ways you could characterise the experiment to push the reaction to favor the products more? For the reaction to produce more of the products which is ethyl acetate, these 3 ways can be done a. render more of the reactant such as ethanol. This can push for the reaction to yield more products since there are more reactants for the reaction to happen. b. Addition of catalyst. For esterification, concentrated sulfuric acid (H2SO4) as catalyst can facilitate the reaction to happen thus, more products will be produced. c. Higher temperature can speed up the reaction rate for faster production of more products. 7. Why do you need to make a wad in the Parafilm? What would happen if you did not make this hole? Esterification process involves formation of CO2. This gas is released as alcohol and carboxylic acid react with each other to produce H2O and ester. The hole made in the Parafilm will prevent pressure build up inside the test tube. Without the hole, gas particles are trapped inside. Too much pressure built up can cause bursting of the

Conventional pharmacological therapies for ischaemic heart diseases Essay - 1

Conventional pharmacological therapies for ischaemic heart diseases and heart failure - Essay ExampleIn the case of myocardial failure abnormality exists in the myocardium which leads to inability of myocardium to fulfill its required function to the heart. This leads to heart failure. In circulatory heart failure, the abnormality of circulation takes place. Any abnormality of circulation responsible for(p) for the inadequacy in the body tissue perfusion, for example, changes of vascular tones, minifyd business line volume and disorder of heart function. The treatment of pathophysiology given by doctors is that they try to decrease the frequency of angina attack so that the prevention of acute coronary syndromes such as MI could be survived. There are various treatments which could be given to the patient in case to prevent heart disease or heart failure. Some patients can be treated by the serve up of Bypass surgery, Left ventricular assist device (LVAD), Heart valve surgery, I nfarct exclusion surgery or Heart transplant. All these treatments depend on the patients current state. (Heart Failure Treatment)The proper diet helps to prevent heart failure which includes fruits, vegetables, low fat products, eggs, meat, seafood, nuts, beans, peas etc. This could be done by victorious the control over cholesterol improvement, blood pressure control, serum glucose control and smoking habits in the patients. (How Is Heart Failure Treated? )This whole treatment depends on after the doctor diagnoses the exact stage of heart failure. Heart failure can also be treated by the therapy of drugs treatment. The usage of such drugs world power result in the cardiac of Congestive heart failure (CHF). Congestive heart failure is a clinical syndrome, which is developed due to the accumulation of the blood. The blood which is in front of the left heart or the blood on the right parts of the heart (Hanacek). The drugs may put the effect on cardiac preload, cardiac afterload or myocardial contractility. Those drugs which increase the cardiac preload or afterload will be harmful for the patient, and

How media has influenced on people and politics in Russia Essay

How media has influenced on people and administration in Russia - Essay ExampleIt is significant that modern political science media is characterized by a lush title fourth estate along with the legislative, executive and judicial, and so on. The belief in the omnipotence of television is so great that some politicians say, that who controls TV and media, controls the entire country. Indeed, modern politics is impossible to imagine without the press, radio and television. Without a doubt, in the grandiose changes that are currently going through Russia, an important role is played by the media. That is the capacious role that the media plays in social and political life of the country, making it the subject of ongoing discussion and research by scientists, experts and journalists. The given paper will ascend that in the conditions of crisis due to the state of social anxiety people are particularly susceptible to suggestion and propaganda and easily respond to various new incenti ves and ideas. allow us consider how media can influence the society. In my opinion, Rozin.V.M. described media functions and how they influence the society well. The analysis shows that in the modern world media have three main(prenominal) functions to inform, to express the position of certain social actors, carry out a particular ideological influence on the mind. While it has long shown that it is not oft function of the press and media confined to first, some argue that the main thing is to present the facts, objective information and nothing else. In connection with this, it is easy to net the following point the media does not simply inform the person, but also create a certain reality in which it is immersed. As part of these, close virtual reality consciously, but more often unconsciously programmed not only by experience, but also his thoughts, attitude.First factor can be called personalist. This is how the journalist realized event. Second

Criminology 135 Canadian Low topic Khadr Case Essay

Criminology 135 Canadian Low topic Khadr Case - Essay ExampleWhen assessing such questions, the answers appear to require a balance between the gum elastic of nations against the resultant infringement of the rights of individuals. But on which side should the balance fall, and when if at all is it tolerable to restrict the rights provided in the Charter? Khadrs case, like so many others, raise these and many more questions, and bring to light the delicate yet fundamental problems faced by the detainment of suspected terrorist individuals.Canadian citizen Khadr, having been arrested on distrust of involvement with Al-Qaeda, and murder of an American soldier was detained in Guatanamo from 2002, during which time he was a minor. He was denied access to counsel and family and was interrogated several times by both(prenominal) US and Canadian officials. When interviewed by the Canadian Government, it was alleged that the interviewer did not allow Khadr access to legal counsel and di d not inform his of his right to silence. Further, the interviewer was aware that Khadr had been undetermined to sleep deprivation prior to the interview a practice held to be torturous and illegal. The information obtained by the interviewer was then exposed to the US Government an accomplishment that affirmed Canadas participation in the conduct of the US, held to be a violation of fundamental principles of justice (Prime Minister v Khadr 2010 SCC 3). Khadr claimed that his fundamental rights provided in scratch 7 of the Charter had been violated the right to life, liberty and security of person. Khadrs rights were held to have been violated, although the Supreme Court of Canada instructed that the Government provide a remedy which was in coordination with the Charter, rather than order his release and return to Canada. Some would imagine that such a remedy would be his release, and many would be surprised to discover that the

The Process of Writing and Editing Papers Research Proposal

The Process of Writing and Editing Papers - Research Proposal ExampleInformation should be focused and it should be written low-spirited from your own reasoning power so that you can be able to make a point from which you will develop your dissertation statement. A thesis statement will show that your essay has a purpose as it is usually the main idea that you will convey in your writing. It should be clear, focused and more in line with the topic of the essay.When writing the main body of the essay, define the keywords by describing what they are, compare the words and in any case give relevant examples. You should also describe the causes of the facts and explain why the causes have led to effects. Use evidence to support the facts that you have written down and the evidence can be from statistics or recent research. For you to be able to develop a professional paper, research your essay topic from different sources and this can be from the internet or from textbooks that learn relevant information. You can also get more ideas by interviewing your classmates as this will give you more ideas from their point of view.After writing your paper, make accredited you revise the essay for its content and organization to ensure that ideas are flowing and that they are relevant to the main subject topic. Edit and proofread your work to disapprove grammar and spelling mistakes. When going through your work, concentrate on making it clear and make sure that it signals the relationship of the different parts in the essay.The process of change papers ensures that your essay is effective. Editing an essay is the final step that is required in paper writing. Analyze your sentences to make sure that they clear, concise and that they contain mobile and strong verbs. Each word that you have used in your essay should suit the purpose of writing.