Hodges and Tizard Essay Example

Hodges and Tizard Essay Failure to make any form of attachment If child is in institutional care, isolation, parent working.  Rutter-  Compared UK and Romanian children adopted both before and after 6 months old. Found that the Romanian children adopted before 6 months did as well socially and emotionally and the UK control group whereas the Romanian children adopted after 6 months old had problems developing attachments and displayed disinhibited attachments and had poor peer relations. Hodges and Tizard  Studied the long term effects of privation using 65 children who were brought up in a childrens home until the age of 4. During this time the children were unable to form any attachments with their caregivers as staff were discouraged from forming attachments in order to reduce upset. After four years old 25 children were restored into their original homes, 33 were adopted and 7 remained in care. The children were followed up at the age of 8 and 16. The researchers found that 20/21 of the adopted children and 6/13 of the restored children had close attachments with their parents. However, the restored children were more likely to be rejecting/ hostile at both 8 and 16. All three groups had problems forming peer relationships and were rated by teachers as being more likely to seek attention. Curtis  Studied Genie who had suffered from privation for the first 13 years of her life. Privation caused numerous bad effects including poor physical development (rickets in her legs), lack of speech, emotional tantrums etc. Some progress was made with making attachments but Genie suffered further bad care in foster homes and regressed dramatically.  Day care  Is a form of care for infants and children offered by someone other than close family, taking place outside the home, children spend all, or part of the day in care but return home at night, Includes nurseries, child-minding. We will write a custom essay sample on Hodges and Tizard specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Hodges and Tizard specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Hodges and Tizard specifically for you FOR ONLY $16.38 $13.9/page Hire Writer Positive effects of day care  Clarke-Stewart et al  Found that children in group based day care wee more sociable and better able to negotiate with peers than children cared for at home or by child-minders. EPPE project  Indicated positive effects of day care on social development including peer relations. Different forms of day care had an impact forms with education and care combined = a more positive effect on social development. 3000 UK children aged 3-4, Cognitive development for all children in pre-school was improved in comparison to those who were home schooled.  Children are more likely to have adverse social profiles this increased the risk of anti-social behaviour and could be reduced by high quality pre-school when aged 3-4.  Negative effects of day care  NICHD  Social competence and problem behaviours including being aggressive, but also challenging behaviour attention seeking.  Day care made children more aggressive and disobedient.

Industrial Engineer essays

Industrial Engineer essays There are many categories that the career of an industrial engineer can break down in to. Of these are quality-control, time-study, process, plane design or factory layout, production, and documentation engineers. There are also configuration management analyst, tool planner, and vendor equally supervisors. Not all industrial engineers are educated in all these areas specifically, some only specify in one or two areas. They may have the title of operations, systems, or management engineers. Over all, the ordinary industrial engineer works with people, organizations, and businesses. This is what sets them apart from other engineers. They design, improve, and install systems. These systems can be/are systematic, materials, information, and people that supply products or services. Things that they design are/can-be facilities and operation procedures, simplifying workflow but increasing out-put, improving layout of equipment, office systems and other units. They develop and oversee quality control, cost control, inventory control, procurement and distribution programs, work standards, performance measures, and improvement of the work environment. Industrial engineers research products and product applications. They conduct long-range org organization studies, plant location, and system effectiveness studies. They study potential markets, sources of raw materials, labor supply, energy resources, and financing of operations. To get all the many tasks they do done, they use certain types of equipment. These are calculators, measuring devices and stopwatches, and specifications and handbooks. With uses of new technology, they use prints, computer (with access to the World Wide Web), computer-aided manufacturing (CAM) systems, computer-aided design (CAD) systems, and electronic/air gaging test equipment. To have a career as an industrial engineer there needs to be and interest in technical work, ability to pl ...

An report for the subject Contemporary Developments in Business and Essay

An report for the subject Contemporary Developments in Business and Management - Essay Example The problem does not finish here. In fact, it emanates from here. There is an array of internal and external influences cast upon any contemporary business organization. Economic conditions fluctuate, systems and processes undergo changes, competitors launch fresh assaults and shareholders pressurize. But the organization explores specific ways to deal with all these crests and troughs. In fact, organizations develop strategic approaches to adapt and flourish with the constantly changing internal and external environment. There are various external and internal factors that influence the functioning of a business enterprise. Researches and studies have brought forth the following major parameters that affect the business process: These are broad outlines. Different factors interact with one another to give rise to a complicated business management problem. For instance, analysis of contemporary organizational and people management issues in the context of change, innovations and imitations brings forth issues of leadership style, facilitation of creativity and the systemic management of complex change. Similarly, the role of technology has to be analyzed as both a source and enabler of change. All this implies that different factors affect the overall business environment. Therefore, it becomes important to analyze them both from a larger and a specific perspective before adopting a new approach to deal with a situation. The tasks of crafting, implementing and executing company strategies are the heart and soul of a business enterprise. Therefore it is imperative to strategize keeping into consideration the gamut of external and internal factors that affect the business on the whole. Successful companies recognize and respond profitably to all these factors, which actually are a host of unmet needs and trends. These companies realize that the business environment presents a never-ending series of opportunities and threats. Consequently, the

Provision Of Services In The Financial Sector Essay - 7

Provision Of Services In The Financial Sector - Essay Example Most of these adults are located in Asia, Latin America, and Africa. The mobile phone device is also changing the provision of services in the financial sector. The cell phones are regarded as cost-effective. The improvement in the technology sector has enabled the use of cell phones in the financial sector. The poor individuals in the society manage a wide range of financial instruments. In most cases, the microfinance sector has several requirements including insurance coverage, loans for emergency needs, pensions and microenterprise loans among others (Dommel 13). The financial sector should address the constrictions entailed in the financial service providers in order to reduce the poverty rates in most regions. This is because most individuals will be supported to invest and also save their money for future use. For instance, the financial service providers should be able to increase access to remittances in the rural areas. They should also consider providing enhancing savings groups and increasing branchless banking.

Did the idea of Manifest Destiny simply mean acquring more terrtory Essay

Did the idea of Manifest Destiny simply mean acquring more terrtory for the United States Why or why not - Essay Example Many Americans began to believe that it was the nation's "Manifest Destiny" to expand westward. Manifest Destiny refers to a concept often used to explain or justify American expansion, especially in the decades preceding the Civil War (1861-65) and again in the late 19th century. While debate over expansion goes back to the beginnings of American expansion in the late 18th century, the phrase "Manifest Destiny" did not come into vogue until the 1840s. In 1845, John O'Sullivan, a democrat leader and editor of the New York newspaper 'The Morning Post, wrote: "Our manifest destiny to over spread and to possess the whole of the continent which Providence has given us for the development of the great experiment of liberty". (O'Sullivan, John L. "Annexation", The United States Democratic Review) To many it seemed inevitable that lands to the west of the Mississippi, once claimed by Mexico, England, and a host of American Indian tribes, should eventually be settled by Americans. John O'Sullivan the editor of the influential 'Democratic Review' and the 'The Morning Post' had coined the phrase "Manifest Destiny" to describe this vision of a United States stretching from Atlantic to Pacific.

Investigating the Energy Released of Ethanol and 1-pentanol

Investigating the Energy Released of Ethanol and 1-pentanol 1.0 Introduction Combustion reactions are always exothermic, due to the substances (fuels) releasing energy through combustion (temperature increases), which the change in enthalpy () is negative value. All fuels of this experiment are alcohols – ethanol, 1-pentanol and two mixtures of them with different ratios (90%:10% ; 80%:20%), which are the most common organic compounds. Alcohols contain the hydroxyl functional group (-OH) (Diagram 1) bonded to an alkyl group’s carbon atom (Chemwiki, 2014). The classification of alcohols depends on the number of carbon atoms are attached to the carbon atom that is attached to OH group. Both ethanol and 1-pentanol are primary () alcohols, which only one carbon atom is attached to the carbon atom with the OH group (Chemiwiki, 2014). Secondary () and tertiary () alcohols are when two and three carbon atoms are attached to the carbon atom with OH group, but they would not be used in the experiment. In this experiment, 1-pentanol () (Diagram 2) has the longest carbon chain (five carbon atoms) of the fuels, which is expected to produce the highest amount of heat during combustion (), and ethanol () (Diagram 1) has the lowest number of carbon atoms (two carbon atoms), which is believed to release low energy during combustion (). During combustion, the fuel/alcohol reacts with oxygen which produces carbon dioxide and water vapour. It is believed that the greater the change in enthalpy value, the more efficiency of the fuel and more energy will be released. The energy released is calculated through bond energy and measured data, which the heat of combustion of water is divided by the number of moles of the fuel used (). All fuels used in the experiment are hydrocarbon, which is when the carbon atoms joining together form different bonds. There are three main groups of bonding types (Diagram 3): alkanes, alkenes, and alkynes (Encyclopedia Britannica, 2015). Ethanol and 1-pentanol are both alkanes, that they only contain single bonds between carbon atoms; whereas, alkenes and alkynes group contain double and triple bonds between the carbon atoms. The calculated enthalpy change of energy is only an approximation, as the bond energy value for each bond is only an average. In addition, the bond energy value provided for each bond is measured in various states for different situations. This accounts for the difference between the calculated and the actual (Harcourt Education, 2007-2010). 4.0 Discussion 4.1 Analysis By investigating the energy produced during the combustion of different fuels, a linear increasing relationship (Figure 3) was discovered that the longer the carbon chain lengths (larger molar mass) in each fuel molecule, the higher energy released during combustion. Due to two of the fuels being mixtures, the number of carbon was hard to define; hence, the molar mass was used to compare with the average enthalpy. According to Figure 2, the average enthalpy and the fuels’ molar mass had a linear relationship, that the larger molar mass of the fuel, the higher the heat of combustion. Ethanol had the lowest molar mass of 46.069g and 1-pentanol had the highest molar mass of 88.15g (Table 2), hence ethanol had the lowest average heat of combustion (668.6403kJ/mole) whereas 1-pentanol had the highest value (1588.2183kJ/mole) (Table 1). There was a large percentage increase of 137.53% from ethanol to 1-pentanol, which supported the increasing trend and the significant difference in Figure 2. Since a longer carbon chain lengths contain more C-H and C-C bonds (more bond energies) which produce more C=O and O-H bonds ( and ); more bonds would be needed to break and larger level of energy released. Figure 1 clearly illustrated that the secondary and calculated data both supported the increasing trend as the blue and orange bars continued to rise with the increase in molar mass. Thus, 1-pentanol was expected and justified to be the most efficient fuel for this experiment. Mixtures of ethanol and 1-pentanol were used to explore whether ethanol would have a great impact on 1-pentanol and the mixture with ratio of 90% ethanol and 10% 1-pentanol was expected to be the most efficient fuel in real life context. Through calculations, both mixtures had larger values of heat of combustion than pure ethanol; hence, ethanol had an impact on 1-pentanol as the percentage change of the mixture with 10% of 1-pentanol was 22.78% and 20% of 1-pentanol mixture was 39.40% in comparison to pure ethanol. Theoretically, the percentage change of the mixture with 20% of 1-pentanol should be more efficient than the mixture with 10% 1-pentanol due to it produced more energy, which it did have a higher value of energy (933.9340 kJ/mole) released than the other mixture (820.9308 kJ/mole). However, the Australian Government regulations would have a proportion of 10% ethanol in petrol (Biofuels Association of Australia, 2014), due to most petrol used in gasoline and diesel engines (in Australia) have an expansion ratio of 10:1 for premium fuel or 9:1 for regular fuel, and some other engines have ratios of 12:1 or higher (Wikipedia, 2015). Therefore, although the mixture with 20% 1-pentanol had higher efficiency than mixture with 10% 1-pentanol, the hypothesis was justified that the mixture with a ratio of 90% ethanol and 10% 1-pentanol was a more efficient fuel for petrol because it had a more most efficient ratio in real life, whereas the mixture with ratio of 80%:20% would be not as effective and may require different design/structure of engine or cause damage to the engine. 4.2 Evaluation The trials of the experiment were completed with consistency, although heat loss occurred, the increasing trend still applied through measured, secondary and calculated data. Moreover, heat loss occurred throughout the whole experiment which justified the consistency, thus the experiment was valid. From Table 3, the average percentage error showed that the mixture with ratio of 80%:20% was the most accurate fuel with lowest percentage error (44.74%) and pure 1-pentanol was the least accurate and had the highest percentage error (50.35%). All percentage errors were mainly caused by heat loss, which was probably due to incomplete combustion occurring during combustion as some black substances were on the bottom of the small cans after burning, which would have reduced the fuel efficiency so more mass of fuel was used. The insufficiency of oxygen caused incomplete combustion to produce carbon monoxide and water vapour, which could be avoided by washing off the char on the can after use each time to ensure the fuel efficiency in the next trial. Fibreglass was used as insulator wrapped around outside the big can, it could be improved by wrapping another layer of cellulose insulator (mainly made of shredded newspaper and mixed with several of chemicals to reduce its flammability) for the next experiment to increase energy efficiency. Fibreglass’ main weakness is that its incapability of blocking air from passing though, whereas cellulose insulator has higher density which would limit the air movement and prevent air-leakage better (Binford C, 2011). The non-consistency of the flame may have reduced the fuel efficiency as well, due to the flame was not stable while burning, but this could be overcome by conducting the experiment with a diminished-scale of compartment and calorimeter (over the top of the flame and cans) to investigate the maximum heat released rate and the combustion efficiency. The precision between all trials of pure ethanol, 1-pentanol and the mixture with 10% of 1-pentanol were good as the results of mass used of fuels were consistent. However, there was a big anomaly due to heat loss, occurring in the second trial of the mixture with 20% of 1-pentanol that the mass of fuel used was 0.65g, which was approximately 9.25% higher than the other two trials. The anomaly may be due to the air-conditioning was just starting which affect the room temperature and the temperature around the flame. This could be improved by completing the experiment at a certain room temperature with no air-conditioning, and it would keep the consistency of surrounding’s temperature. The experiment could be extended by changing the percentage of ethanol (e.g. 10% of ethanol), based upon the Australian Government that most petrol have 10% ethanol because at this ratio ethanol produces the most efficient energy (justified in Analysis). It could be extended by using mixtures rat io of 50%:50% of ethanol and 1-pentanol to explore which fuel would have a greater impact, as well as mixtures with ratios of 10%:90% and 20%:80% of ethanol and 1-pentanol to investigate whether mixture with 10% of ethanol had the most fuel efficiency. Another way to extend this experiment is to use different concentration of fuels used in the original experiment, by adding water or evaporating the fuel (heating – increase the temperature) to decrease the concentration of fuels, then burn the fuels and calculate the mass of fuel used to then find the heat of combustion to investigate whether the trend of increase in carbon chain lengths/molar mass causes increase in the fuel efficiency still holds. 5.0 Conclusion In summary, the experiment was investigating the energy released of ethanol, 1-pentanol and their mixtures with ratios of 90% ethanol and 10% 1-pentanol and 80% of ethanol and 20% of 1-pentanol during combustion. Furthermore, the results of all fuels’ energy released were shown to obey the trend of increasing in carbon chain length (molar mass) lead to the increase in energy released, and the mixture with ratio of 90%:10% was discovered to be the most efficient fuel ratio for petrol as the Australian Government uses. Therefore, the hypothesis was justified that pure1-pentanol was the most efficient but when relating to real life circumstances fuel mixtures containing a ratio of 90%:10% were the most efficient for petrol.

The Benefits and Drawbacks of a Binary Tree Versus a Bushier Tree

Homework 3 4. Discuss the benefits and drawbacks of a binary tree versus a bushier tree. The structure of binary is simple than a bushier tree. Each parent node only has two child. It save the storage space. Besides, binary tree may deeper than bushier tree. The result record of binary may not very refine. 5. Construct a classification and regression tree to classify salary based on the other variables. Do as much as you can by hand, before turning to the software. Data: NO. 2 3 4 5 6 7 8 9 10 11 Staff Sales Management Occupation Service Gender Female Male Male Male Female Male Female Female Male Female Male Age 45 25 33 25 35 26 45 40 30 50 25 Salary $48,000 $25,000 $35,000 $45,000 $65,000 $45,000 $70,000 $50,000 $40,000 $40,000 $25,000 Level Level 3 Level 1 Level 2 Level 3 Level 4 Level 3 Level 4 Level 3 Level 2 Level 2 Level 1 Candidate Splits for t=Root Node Candidate Split 1 2 3 Left Child Node, tL Occupation = Service Occupation = Management Occupation = Sales Right Child Node, tR Occupation = {Management, Sales, Staff} Occupation = {Service, Sales, Staff} Occupation = {Service, Management, Staff} 5 6 7 8 9 10 11 12 Occupation = Staff Gender = Female Age 45 Values of the Components of the Optimality Measure =(s|t) for each candidate split, for the Split PL PR P(L=1|tL) P(L=2|tL) P(L=3|tL) P(L=4|tL) P(L=1|tR) P(L=2|tR) P(L=3|tR) P(L=4|tR) 2PLPR ? (s|t) Root Node 1 2 3 4 5 6 7 8 9 0. 27 0. 73 0. 33 0. 33 0. 33 0. 00 0. 13 0. 25 0. 38 0. 29 0. 25 0. 40 0. 23 0. 36 0. 64 0. 00 0. 18 0. 82 0. 00 0. 18 0. 82 0. 50 0. 45 0. 55 0. 00 0. 27 0. 73 0. 67 0. 36 0. 64 0. 50 0. 45 0. 55 0. 40 0. 55 0. 45 0. 33 0. 00 0. 50 0. 50 0. 20 0. 00 0. 00 0. 20 0. 33 0. 29 0. 25 0. 20 0. 50 0. 50 0. 00 0. 0 0. 33 0. 50 0. 40 0. 33 0. 29 0. 38 0. 40 0. 50 0. 00 0. 00 0. 40 0. 00 0. 00 0. 00 0. 00 0. 14 0. 13 0. 20 0. 29 0. 22 0. 11 0. 33 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 43 0. 22 0. 22 0. 33 0. 38 0. 43 0. 33 0. 20 0. 25 0. 33 1. 00 0. 00 0. 22 0. 22 0. 00 0. 25 0. 29 0. 33 0. 40 0. 25 0. 33 0. 00 0. 46 0. 30 0. 30 0. 50 0. 40 0. 46 0. 93 0. 50 0. 46 0. 40 1. 60 0. 66 0. 26 0. 40 0. 46 0. 53 0. 66 0. 46 0. 46 0. 30 0. 23 0. 26 0. 33 0. 44 0. 33 0. 38 0. 29 0. 33 0. 40 0. 50 0. 33 0. 00 10 0. 64 0. 36 0. 29 11 0. 73 0. 27 0. 25 12 0. 91 0. 09 0. 20 Optimality measure maximized to 0. 6, when occupation=†Management†(Left Branch), occupation=†Service or Sales or Staff†(Right Branch) After the first split, left child has records 4,5,6,7, right child has records 1,2,3,8,9,10,11. Now we split the left child which has records 4,5,6,7. Candidate Split 5 6 7 10 Left Child Node, tL Gender = Male Age 35 Values of the Components of the Optimality Measure =(s|t) for each candidate split, for the Split PL PR P(L=1|tL) P(L=2|tL) P(L=3|tL) P(L=4|tL) P(L=1|tR) P(L=2|tR) P(L=3|tR) P(L=4|tR) 2PLPR ? (s|t) each candidate split, for decision node A 5 6 7 0. 50 0. 50 0. 25 0. 75 0. 50 0. 50 0. 00 0. 00 0. 0 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 1. 00 1. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 1. 00 0. 00 0. 50 1. 00 0. 00 0. 00 0. 00 0. 33 0. 00 0. 00 0. 67 1. 00 1. 00 0. 38 0. 50 0. 38 0. 50 1. 00 0. 50 1. 00 0. 67 0. 00 0. 33 10 0. 75 0. 25 Optimality measure maximized to 1. 00, when Gender=†Male†(Left Branch), Gender=†Female†(Right Branch) After this split, both left branch and right branch terminate to pure leaf node. The left child has records 4. 6 which value=†Level 3†³ and the right child has record 5,7 which value=†Level 4†³. Now we split the right child of root node which has records 1,2,3,8,9,10,11.Candidate Split 1 3 Left Child Node, tL Occupation = Service Occupation = Sales Right Child Node, tR Occupation = {Sales, Staff} Occupation = {Service, Staff} 4 5 6 8 9 11 12 Occupation = Staff Gender = Female Age 45 Values of the Components of the Optimality Measure =(s|t) for each candidate split, for the Split PL PR P(L=1|tL) P(L=2|tL) P(L=3|tL) P(L=4|tL) P(L=1|tR) P(L=2|tR ) P(L=3|tR) P(L=4|tR) 2PLPR ? (s|t) each candidate split, for decision node B 1 3 4 5 6 8 9 0. 43 0. 57 0. 29 0. 71 0. 29 0. 71 0. 43 0. 57 0. 29 0. 71 0. 43 0. 57 0. 57 0. 43 0. 33 0. 00 0. 50 0. 00 1. 0 0. 67 0. 50 0. 40 0. 33 0. 33 0. 50 0. 33 0. 50 0. 00 0. 00 0. 25 0. 40 0. 50 0. 25 0. 00 0. 49 0. 16 0. 40 0. 40 0. 50 0. 60 0. 50 0. 33 0. 50 1. 00 0. 20 0. 40 0. 00 0. 40 0. 50 0. 67 0. 50 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 41 0. 41 0. 49 0. 41 0. 49 0. 49 0. 41 0. 24 0. 33 0. 33 0. 65 0. 82 0. 65 0. 65 0. 33 0. 33 0. 50 0. 33 0. 00 0. 33 0. 50 0. 40 0. 33 0. 00 0. 67 0. 00 0. 00 0. 00 0. 20 0. 33 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 20 0. 50 0. 00 0. 00 0. 00 0. 00 0. 00 11 0. 71 0. 29 12 0. 86 0. 14 Optimality measure maximized to 0. 2, when Age†25†³(Right Branch) After this split, the left branch terminates to pure leaf node which has records 2,11 and value=†Level 1†³. The right branch has records 1,3,8,9,10. Now we split th e right child which has records 1,3,8,9,10. Candidate Split Left Child Node, tL Right Child Node, tR 1 3 4 5 8 9 11 12 Occupation = Service Occupation = Sales Occupation = Staff Gender = Female Age 45 Values of the Components of the Optimality Measure =(s|t) for each candidate split, for the Split PL PR P(L=1|tL) P(L=2|tL) P(L=3|tL) P(L=4|tL) P(L=1|tR) P(L=2|tR) P(L=3|tR) P(L=4|tR) 2PLPR ? (s|t) ach candidate split, for decision node C 1 3 4 5 8 9 0. 40 0. 60 0. 40 0. 60 0. 20 0. 80 0. 60 0. 40 0. 20 0. 80 0. 40 0. 60 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 50 0. 50 1. 00 0. 50 0. 50 0. 00 0. 67 0. 00 0. 00 0. 33 0. 50 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 67 0. 67 0. 50 1. 00 0. 50 0. 33 0. 50 1. 00 0. 33 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 48 0. 48 0. 32 0. 48 0. 32 0. 48 0. 48 0. 32 0. 16 0. 16 0. 32 0. 64 0. 32 0. 64 0. 16 0. 32 0. 33 0. 50 0. 00 0. 50 0. 67 0. 50 0. 00 0. 33 1. 00 1. 00 0. 67 0. 50 0. 00 0. 00 0. 00 0. 00 0. 00 11 0. 60 0. 40 12 0. 0 0. 20 Optimality measure maximized to 0. 64, when Gender=†Female†(Left Branch), Gender=†Male†(Right Branch) After this split, the right branch terminates to pure leaf node which has records 3,9 and the value=†Level 2†³. The left branch has records 1,8,9. Now we split the left child which has records 1,8,10. Candidate Split 1 3 4 11 12 Left Child Node,s tL Occupation = Service Occupation = Sales Occupation = Staff Age 45 Values of the Components of the Optimality Measure =(s|t) for each candidate split, for the Split PL PR P(L=1|tL) P(L=2|tL) P(L=3|tL) P(L=4|tL) P(L=1|tR) P(L=2|tR) P(L=3|tR) P(L=4|tR) 2PLPR ? s|t) each candidate split, for decision node D 1 3 4 0. 33 0. 67 0. 00 0. 33 0. 67 0. 00 0. 00 1. 00 0. 00 0. 00 0. 50 0. 50 0. 00 0. 44 0. 44 0. 00 1. 00 0. 00 0. 00 1. 00 0. 00 1. 00 1. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 50 0. 00 0. 50 1. 00 0. 50 1. 00 0. 50 0. 00 0. 00 0. 00 0. 00 0. 00 0. 44 0. 44 0. 44 0. 44 0. 44 0. 89 0. 44 0. 89 0. 33 0. 67 0. 00 11 0. 33 0. 67 0. 00 12 0. 67 0. 33 0. 00 Optimality measure maximized to 0. 89, when Occupation=†Staff†(Left Branch), Occupation=†Service or Sales†(Right Branch) After this split, both the left and right branch terminate to pure leaf node.The left branch has record 10 which value=†Level 2†³ and the right branch has records 1 and 8 which value=†Level 3†³. In summary, we construct the CART tree below, Root Node (All Records) Occupation management vs. not management Occupation=man agement Occupationmanag ement Decision Node A (Records 4,5,6,7 ) Gender=Female Gender=Male Age25 Level 3 (Records 4,6) Level 4 (Records 5,7) Decision Node C (Records 1,3,8,9,10) Gender=Female Decision Node D (Records 1,8,10) Gender=Male Level 2 (Records 3,9) Occupation=Staff Level 3 Occupation=Service or Sales Level 2 (Record 10) Records 1. 8) 6. Construct a C4. 5 decision tree to classify salary based on the other variables. Do as much as you can by hand, before turning to the software. Below is all candidate split and information gain for root node Candidate Split 1 Child Nodes Occupation = Service Occupation = Management Occupation = Sales Occupation = Staff 2 Gender = Female Gender = Male Age 25 Age 26 Age 30 Age 33 7 Age 35 8 Age 40 9 Age 45 0. 19 0. 12 0. 15 0. 38 Information Gain 0. 78 3 0. 55 4 0. 58 5 0. 38 6 0. 38 Candidate split 1 has highest Information Gain=0. 8 bits and chosen for initial split. And the initial split produces four second level decision node, decision node A,B,C and D. Then do the same process again until all leaf nodes have same target class values. The C4. 5 decision tree is below. Root Node(All Records) Occupation=Service, Management, Sales or Staff Occupation=Staff Occupation=Service Occupation= Management Decision Node A (Records 1,2,3) Decision Node B (Records 4,5,6,7) Occupation= Sales Decision Node C (Records 8,9) Decision Node D (Records 10,1 1) Gender=Female Level 4 (Records 5,7)Gender=Male Level 3 (Records 4,6) Gender=Male Gender=Female Gender=Male Level 2 Gender=Female Level 3 (Record 8) Level 2 (Record 9) (Record 10) Level 1 (Record 11) Gender=Female Level 3 (Record 1) Gender=Male Decision Node E (Records 2,3) Age25 Level 1 (Record 2) Level 2 (Record 3) 7. Compare the two decision trees and discuss the benefits and drawbacks of each. In this case, CART tree is deeper than C4. 5 tree. CART algorithm says each node(except left node) can only have two child. But C4. 5 algorithm don't have this restriction. Besides, most of leaf nodes of C4. tree have only one record, it may cause overfitting. 8. Generate the full set of decision rules for the CART decision tree. Antecedent if Occupation = Management and Gender = Male if Occupation = Management and Gender = Female if Occupation = Service, Sales, Staff and Age 25 and Gender = Female if Occupation = Service, Sales and Age ; 25 and Gender = Female if Occupation = Service, S ales, Staff and Age ; 25 and Gender = Male Consequent then Level 3 then Level 4 then Level 1 then Level 2 then Level 3 then Level 2 Support 2 2 2 1 2 2 Confidence 1. 0 1. 0 1. 0 1. 0 1. 0 1. 0 9.Generate the full set of decision rules for the C4. 5 decision tree. Antecedent if Occupation = Service and Gender = Female if Occupation = Service and Gender = Male and Age 25 if Occupation = Management and Gender = Female if Occupation = Management and Gender = Male if Occupation = Sales and Gender = Female if Occupation = Sales and Gender = Male if Occupation = Staff and Gender = Female if Occupation = Staff and Gender = Male Consequent then Level 3 then Level 1 then Level 2 then Level 4 then Level 3 then Level 3 then Level 2 then Level 2 then Level 1 Support 1/11 1/11 1/11 2/11 2/11 /11 1/11 1/11 1/11 Confidence 1. 0 1. 0 1. 0 1. 0 1. 0 1. 0 1. 0 1. 0 1. 0 10. Compare the two sets of decision rules and discuss the benefits and drawbacks of each. CART only has two branches, support is mor e than C4. 5, that is to say the result is not very refine. It is deeper than other trees most of the time. But it is easy to interpret. C4. 5 can have several branches. Support of C4. 5 is less than CART. The result is more accurate.

Was Robespierre More a Success Than a Failure as a Revolutionary Leader?

Introduction to Robespierre: Robespierre was a French lawyer, politician and one of the most influential figures of the French- Revolution. Influenced by 18th century philosophes such as Rousseau, he was a capable articulator of the beliefs of the left-wing bourgeoisie. Successes: Gained support of the majority: He gained the title â€Å"incorruptible†. Particularly interested in the rights of man and revolutionary virtue. Earned his reputation in the Estates General as a defender of the poor. He genuinely believed that the people of France were good and was therefore capable of achieving social and public well being in France.While the Constituent Assembly was preoccupied with drawing up a constitution, Robespierre turned from the assembly of lawyers and wealthy bourgeoisie to the people of France. He was very successful in voicing out his ideas for the Declaration of the Rights of man and constitutional provision. In the Jacobin Club, he found a sympathetic audience among th e intelligent artisans and small shopkeepers who became members of the club. His fanaticism won him supporters; his singularly sweet and sympathetic voice gained him hearers; and his upright life attracted the admiration of all Establishment of the Republic:Robespierre's main ideal was to ensure the virtue and sovereignty of the people. He disapproved of any acts which could be seen as exposing the nation to counter-revolutionaries and traitors, and became increasingly fearful of the defeat of the Revolution. He instigated the Terror and the deaths of his peers as a measure of ensuring a Republic of Virtue Establishment of the National Convention – to sweep away the enemies Supported execution of Louis â€Å"For Louis I have neither hate, not love.I only hate his crimes† Destruction of the Gironidsts – Maxim Isnard, Girondist, spoke about counter-revolution and on 2nd June, a crowed of armed men from the Commune of Paris arrested 32 deputies from the convention Reign of Terror: After Robespierre was elected to the Committee of Public safety (a revolutionary tribunal), he earned a dominat position after the fall of the monarchy and declared â€Å"It is time to horrify all the conspirators† The terror acted against real and suspected enemies of the evolution and extended into every corner of France. Victims were mostly the aristocracy, bourgeoisie and members of the clergy but also included members of other classes. In all, perhaps 40,000 people were executed. Leadership of War was decisive: A revolutionary war must be waged to free subjects and slaves from unjust tyranny, not for the traditional reasons of defending dynasties and expanding frontiers.Failures: Short-term rule (1793-1794) Enemies were paralysed briefly: Cecile Renault, woman who tried to murder Robespierre and other politicains who opposed him for being a dictator and associated with Danton’s death â€Å"the blood of Danton chokes him† Socio-religious and economic policies weren’t a success

Consumers Digital Writes essays

Consumers Digital Writes essays Music piracy has caused quite a stir with copyright infringement laws in recent months. A current article I found talks about a recent issue within this topic. The main issue is consumers digital writes. It was published in the San Francisco Chronicle by Benny Evangelista. A group of entrepreneurs have proposed a law to protect consumers and allow them to copy CDs, use a MP3 player, and watch DVD movies on their computer. These three areas are the major pirated areas of digital products. The government is currently trying to crack down on these three areas and make it so it is not possible to do them on any computer. These entrepreneurs feel this is wrong and want to protect the consumers rights. They argue that not all people that own a computer are going to be piraters. They state All consumers are not potential criminals. The entrepreneurs have proposed a Consumer Technology Bill of Rights that says the following things should still be okay for consumer to do : record tv shows to watch later, copy songs from CDs to a portable device, make backup copies of content, and translate content into different formats. The concern that the government has is the rights listed about can be taken advantage of. This article is defiantly coming from one side of the topic. The side it is arguing is the consumer side. This side contains both innocent and guilty parties which includes the people that are taking advantage of digital technology; pirates. The other side is the artists and corporate businesses that want to protect their product. Without this proposal all consumers would be labels as piraters when just a certain percentage actually are. The writer for this article is a reporter for the San Francisco Chronicle. His primary role is to inform the public about current issues. He specifically want to write about issues that impact the people of the San Francisco area. ...

Analysis and performance for football Essays

Analysis and performance for football Essays Analysis and performance for football Essay Analysis and performance for football Essay I feel that Fernando Torres is one of the best strikers currently playing, so I have decided to base my analysis of performance on him. One of the reasons why Torres is an extremely strong player is because he has very good agility. He is able to change direction and speed very quickly, enabling him to dodge players and get past them. Weaker players are not able to do this because they don’t have good enough agility. An interval or fartlek training session would be appropriate to help weaker players improve at changing speeds. Torres also is good at all aspects of the game and can show a variety of techniques; for example dribbling, passing, turning with the ball, tackling and shooting. He is at the autonomous stage of learning a skill, therefore performing the skill becomes natural and involves very little thought, unlike the stage intermediates would be at which is associative. Intermediates would need feedback to progress and to get to the autonomous stage, which only the best get to. Torres also shows he has motor skills by moving and controlling muscles effectively in order to sprint and get the ball. This is related to co-ordination – as soon as players with good motor skills see the ball, their body automatically repositions themselves to be in the right place. He shows he has cognitive skills by thinking about where other players are positioned in relation to him and deciding what to do with the ball. It also helps him to use space effectively, by running off the ball to create space and then to move into space later on. Torres has gross motor abilities of speed, stamina and explosive strength. Speed is important so he can beat players to the ball and then keep it. Someone playing in a less advanced team would not have a high enough level of skill to be able to dribble with the ball at speed and keeping it under control. A good practice session for this is to use a rope ladder, and to get the players to step both feet in and out of each section as quickly as possible. His stamina (including muscular and cardiovascular endurance) enables him to keep performing to the highest standard for the full 90 minutes. I think this is a weak aspect of my own game. To improve, I could go for regular long low intensity runs to improve my cardiovascular endurance. Finally, his explosive strength helps him to make sudden sprints for the ball. This also requires good fitness, and intermediate players may not have the required endurance to be able to do this for the full 90 minutes. A good practice to improve explosive strength in football is to use fartlek training, where you do a low intensity jog and then a short sprint continuously. Torres’ recovery time is also very important, as it must be quick so he is able to use his explosive strength to the highest level all the time. Psychomotor abilities are also very important for Torres, especially reaction time (in order to respond quickly to intercept the ball) and aiming (so the player can pass and shoot accurately). A good practice drill to improve reaction time is where two players stand by cones a few metres away from each other. The ball is placed in the middle, and when they hear the whistle they have to run towards the ball and the first person to get to it has to get past the other player. This not only improves reaction time, but also the first touch on the ball and explosive strength. Unlike intermediate players, Torres has the ability to make the skill he is performing more self-paced, which is something I am unable to do. For example, when trying to get past a defender, he can decide when to complete the skill because he has great control over the ball. For learners or intermediates, then the skill will be more externally paced, because they are not completely in control. Football includes lots of open skills. For example, before performing the skill, you have to take into consideration where the other players are positioned, what the surface you’re playing on is like and what is happening at the time, for example, if you’re in the attacking half or the defending half. You constantly need to adapt what you’re doing to suit the changing environment. It is best to learn these skills in a closed environment in order to get the basics right, then move onto an open environment so you can improve and get ready for a game situation. Football also involves interactive skills because you are constantly interacting and having contact with other players, and you need to work as a team in order to win the game.

Being and Nothingness according to Jean-Paul Sartre Essay

Being and Nothingness according to Jean-Paul Sartre - Essay Example Sartre explains that our perception of the external world is absolute and pure. He also suggests that our perception of objects is of finite nature, and our self perceives them with the help of the senses. He is of the idea that what we see in the outside world is what we know and what we get. In his philosophical theory argues that the being – in –itself and being- for- itself are distinct aspects of this real world. Here being – in –itself are the unconscious beings and being- for -itself is the conscious being. As per Jean-Paul Sartre, being –in -itself is stable and isn’t aware of its existence, whereas being – for- itself is aware of its own consciousness. These both beings are distinct from each other and constitute the existence of the universe.Being – in– itself cannot change its form with its own will as it does not have will or consciousness. However being – for – itself has free will, awareness an d chooses to act right or wrong. Anyway, Jean-Paul Sartre sees the being – for –itself as incomplete and indefinite, as it can go to any limit with its dynamic consciousness. This is what makes a man undetermined, indefinable and conscious creature. Since for – itself or a man in other terms is absent of a predetermined essence, it is intimidated or forced to create itself from nothingness or voidness. According to Sartre voidness or nothingness is the very explainable characteristic of a human being.For example, a rock is a rock and can do nothing to change its shape or form. But in case of being – for – itself can change its shape, form and even decide what he wants to do or not do. A man has the power to act in this world, and also can interact with physical objects which are being – in – itself. We can see that a man is not simply being here in this world, but also is actuating himself with the power of consciousness and awareness . A man or a self can create a whole dynamic world of himself by perceiving the objects of the universe. His consciousness is of infinite power and this gives him the ability to perceive being – in – itself in a dynamic way.

How does Social learning theory positively impact the training program Literature review

How does Social learning theory positively impact the training program - Literature review Example In resolving the main research problem, the following objectives will be addressed as a guideline: 1. The definition and distinctiveness of adult learning theory. 2. An assessment of Adult learning processes and systems in educational institutions. 3. An evaluation of organizational learning in relation to adult learning. Definition & Differentiation of Adult Learning â€Å"Adult Learning Theory often known as Andragogy is distinct from teacher-led or content-led systems of traditional learning, which is known as Pedagogy† (Yaafi, 2012 p1). Scholars in most educational fields prefer to examine the concept of adult learning in relation to the traditional method of teaching and learning, which is the classroom type of learning whereby the teacher leads students through a given course. Beich describes some important components of pedagogy or child learning (2011 p26). First of all, the instructor is viewed as an expert. This is because there is often a huge noticeable gap between the experience and skills of the instructor and the students. Secondly, the instructor is responsible for the learning process. In other words, the instructor is in the centre of affairs and s/he takes charge of the activities within the classroom. Thirdly, the learning content is structured. There is a clearly defined goal and a logical sequence. Fourthly, the motivation in a pedagogic learning environment is external. Students sit in class because they have to move on to the next level, pass exams or graduate. Knowles identifies some important components of adult learning that makes such learners distinct (1973). They include: 1. Adults need to know why they should learn before investing time to learn. 2. Adults enter learning situations with self directing motives. The trainers just guide. 3. Adults come into the learning environment with a wealth of experience. 4. Adults have a readiness to learn things that help them to cope with their daily lives. 5. Adults devote more energy to learn things that help them to perform a task or solve problems. 6. Adults are more responsive to internal motivation like self esteem rather than extrinsic motivators like promotion and the like. Beich (2011) goes on to draw a distinction between the two concepts. This is tabulated below: Andragogy Pedagogy Learners are called 'participants' or 'learners' Learners are called 'students' Independent learning style Dependent learning style Objectives are flexible Objectives are predetermined It is assumed that learners are experienced Learners are often inexperienced Active training methods are used Passive training methods are employed Learners influence training pace Trainers control the learning pace Participants' involvement is vital for success Learning is content centred Learning is real-life and problem centred Learning is theoretical In spite of the relativism in the definition of adult learning or andragogy, there are some absolute definitions which seem to provide an ind ependent view of the concept. According to Isenberg, â€Å"... andragogy is the art and science of helping adults learn† (2007 p9). This means that it involves the necessary actions and activities that come together to support the upgrade of knowledge amongst adults. This definition has not been without its criticism. Rachal makes a significant analysis of andragogy and identifies its shortfalls. He stated that â€Å"Due to the elasticity of meaning of andragogy and the consequent variability of