200mmHg during strenuous exercise compared with the average systolic pressure of 110-140mmHg when resting; this increases dramatically when exercising.[2] Intense exercise increases the a-v02 and at optimum exertion the blood concentration difference between the arterial and venous can be three times that of the resting level.[3] The volume of blood plasma also decreases with the onset of exercise; this reduction allow the concentration of haemoglobin to increase consequently markedly increasing
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Schwann and M.J. Schleiden introduced the cell theory; the theory that individual cells make up all tissues.1 However‚ due to the lack of staining techniques at the time‚ not much was known about nervous tissue and many scientists wondered if it even conformed to the same rules followed by all the other cells in the body. Two major theories were proposed regarding the nervous system: the reticular theory by Josef van Gerlach‚ and the neuron doctrine theory.1 Eventually‚ in 1873‚ an Italian scientist
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an essay on the following topic: "Discuss cultural differences as they exist in American and Vietnamese culture and suggest some ways to overcome them." CONTENT The difference of culture impacts so much to the way to living‚ the way of thinking and the way of doing business. America and Vietnam have a big difference in culture‚ religion and business. However‚ we live in a world where it is called flat world‚ where there is no restriction between countries. It requires us to integrate in order to
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Though there are many theories I studied one which is routine activity theory which was developed by Marcus Felson and Lawrence E. Cohen. These people strongly believed that crime is unaffected by social causes such as poverty‚ inequality‚ and unemployment. There are of course some sociologists who believe in the social causes of crime. Although there is of course some routine activity theory related crimes some sociologist just can’t agree. For crime to be committed‚ three aspects are needed A motivated
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The Routine Activities Theory is an explanation of how a change in a person’s social patterns affects crime rates. At the center of the environmental criminology theory‚ the Routine Activities Theory examines crimes as events that happen at a specific location and time‚ involving specific persons and/or objects. There are three components necessary for predatory crimes to occur; a motivated offender‚ suitable targets‚ and the absence of a capable guardian. In the event that one is lacking‚ a predatory
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Routine activity theory is a sub-field of rational choice[->0] and criminology[->1]‚ developed by Marcus Felson[->2] and Lawrence E. Cohen[->3]. Routine activity theory says that crime[->4] is normal and depends on the opportunities available. If a target is not protected enough‚ and if the reward is worth it‚ crime will happen. Crime does not need hardened offenders‚ super-predators‚ convicted felons or wicked people. Crime just needs an opportunity. The basic premise of routine activity theory is
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relationships are administrated by implicit or explicit contracts between agents and principals. The assumption of agents’ self – interest which contradicts with the principals’ interest is the basis of the agency problem. According to Alawattage and Wickramasinghe‚ agency theory suggests two fundamental reasons for the agency problem. First is the goal contradiction between the agent and principal. Second reason is the information asymmetry between the agent and principal. Principal does not know the amount
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Theories of aging In this essay I am going to explain two theories of ageing such as social disengagement and activity theory. I will also discuss these theories in relation to my chosen individual‚ Kurt Cobain‚ and how they have affected their development or would have in the future. I will discuss how social disengagement and activity theory may have affected him in his later life if he had reached that life stage. The first theory I am going to explain is the social disengagement theory.
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operational‚ and concrete operational. On the other hand‚ Vygotsky based his theory of development the basic notions that children construct knowledge‚ learning can lead to development‚ development cannot be separated from its social context‚ and language plays a role in development. Though both of the well-known theories explain child development‚ they are each different from one another. The most obvious difference is that Piaget’s stages are hierarchical‚ while Vygotsky’s are not. This
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someone who should be punished in his behavior. Of course‚ this punishment has been abolished in the United States. Theory of punishment can be divided into two concepts: the Utilitarian and Retributive. Utilitarian theory of punishment to discourage criminal behaviors someone attempts to punish the perpetrators‚ or " shock and awe”‚ the future wrong behavior. Retribution theory attempts to punish the perpetrators because they should be punished. According to the philosophy of utilitarianism‚ the
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