Population density Dissertation Example | Topics and Well Written Essays - 3750 words

Population density - Dissertation Example Though the two theories tend to be in discordance, in unison they reflect the importance of the links that exist between the different existing scope modifiers like various institutional variables and the prevalent economy type of that community, to the population growth rate. Thus, there are no doubts that population density and growth rate has signi?cant in?uence over the socio-economic and demographic characteristics of any community (rural and urban). †¢ Higher population density and a high population growth rate subsequently results in increased demands for natural resources like water, food, fuel, agricultural land, an others from the natural resource pool. Rapidly expanding population thus results in over exploitation of natural resources, owing to the persistently rising demands. †¢ High population densities or rising population growth rate leads to elevation in agricultural activities that in turn intensifies deforestation, promoting urbanisation and greater land u se conflicts. †¢ Population growth expansion leads to higher energy demands and use (especially fuel oil and its derivatives, since they form the common energy sources both for urban and rural communities). †¢ population growth and density also ascertains the need for various essential public services like health, water, food, education, housing, transport, etc. thus, affecting the process of governmental budgetary allocation. The significant influence yielded by population on the natural resources, and socio-economic characteristics of a community, makes it necessary to study the orientation in population density and distribution, in order to plan and implement any program associated with growth and development of a State. To under the trends in population density and distribution it is necessary to study and analyse periodically the available standardised data (presently the data from census is used for analysis) on size and spatial distribution of population over a spec ific length of time. However, on studying the various available literatures on population density and its effects on the socioeconomic characteristics of a community, it is seen that very little research has been conducted in this regards. A closer look revealed that it was primarily owing to the complex nature of the term, ‘population density,’ not much work has been done on it (Fonseca and Wong, 2000). Thus, it makes it difficult for the researcher to differentiate between the cause and effect, while analyzing the multidimensional aspects of human density, and its relationship with socio-economic aspects. The intricate nature of the population density is also reflected in the association of various other factors, besides the socio-economic one, like historical or environmental factors, that assist in the formation a specific density range like clustered, linear, or randomly distributed, as regards any urban or rural population (Argent, Smailes, & Grif?n, 2006). 1.2 De nsity The term density forms to be one of the most important dimensions within the geographical aspects of development, and is seen as the economic output that is generated from a unit of land. The term, â€Å"refers to the economic mass per unit of land area, or the

Distinguish the mnemonic functions of the hippocampus, striatum and Essay

Distinguish the mnemonic functions of the hippocampus, striatum and amygdale - Essay Example Hippocampus can be related to limbic system of the brain and it has a significant role in not only maintaining long term memory but also in spatial navigation. These roles of hippocampus make it a structure of critical importance for a brain. When we talk about hippocampus’s critical role in the brain, we should also mention its importance in the formation of factual and autobiographical memories in the brain of a human or a mammal. Hippocampus can also work as a gateway for the memory (Cohen & Eichenbaum, 1993). It is in a sense that all new memories pass through this gateway before getting into the permanent storage area of the brain. If we talk about the structure of hippocampus, we can call it a paired structure which is formed so that mirror image lies on both sides of the brain (Matthews, 2000). Damage to this critical structure of the brain can lead to a very detrimental disease which is anterograde amnesia. In anterograde amnesia, new memories can not be formed by the brain because it loses the ability of formation of any sort of new memories in the brain (Traub & Miles, 1991). In such case, older memories don’t get affected and they are kept safe in the brain. The affect is only on new memories. When a person gets damage to the hippocampus of the brain, he loses the ability to store new memories but all those memories which have a relation with his past, are kept safe in the brain. But it is not the case with skills and abilities of a person. Skills don’t get affected by the damage to hippocampus. Even new memories which are related to the skills and habits of a person can be formed without a proper functioning hippocampus in the brain (Buzsaki, 2006). There are various researches which are being made these days by the researchers in the medical field in order to determine those memories which don’t get affected due to improper functioning of hippocampus. These researches are