Variables used in Spatial and Regional models The WritePass Journal

Variables used in Spatial and Regional models Introduction Variables used in Spatial and Regional models IntroductionBibliographyRelated Introduction In Geography scale principally concerns space. Scale relates to other ideas, only can we understand scale when it is applied in respect to the totality of the landscape element. In this thesis, I plan to examine how spatial scale problems have been manipulated and resolved. I will assess examples of variables used in spatial and regional models at various scales and the methodological dilemmas within spatial analysis and solutions to this. I will also scrutinize the way in which we select scales and some of the trade offs needed in the future to consider continental and global scales. Finally, I argue for a better amalgamation of space and spatial scales into hierarchy supposition. Addressing scale unswervingly, the most frequent form is cartographic scale. Watson (1978) argues; â€Å" scale is a ‘geographic’ variable almost as sacred as distance† and â€Å"well developed policy has been created to balance the scale versus resolution-information content of a map† (Board 1967). Maps depict the earth’s surface; this raises the concern of how flat maps disfigure spatial relations on the earth’s surface. In turn, the use of ‘analysis’ scale, includes the use of units to measure phenomena, for data analysis and mapping. Essentially this being the scale for observing and acknowledging geographic phenomena. We can argue that this form of ‘occurrence’ scale is the ‘true’ scale of geography, analysing how geographic processes function across the World. It is accepted that a variety of scales of geographic phenomena interrelate; local economies are enclosed with regional economies and rivers are contained within larger hydrological systems for example. Therefore, conceptualizing such hierarchies can be complex for geographers, the traditional method of focusing on a single scale largely continues. Generalization has arisen as a result. This is the view that the world that surrounds us can never be studied or modelled, or represented in all of its full detail and complexity. Perceptibly, scale is of great importance due its consequences for the degree to which geographic ideas are generalized. Generalization is in effect a process of simplification; it includes aspects of collection and development of characteristics and evidence that interest us as geographers. It demonstrates the way in which a study can represent smaller pieces of earth; it tends to be more focused on fine geographic details. For example, if we were to consider the way in which a large scale map will demonstrate more features of the earth’s surface in greater detail than a small-scale map. Geography has often been held under disparagement due to its â€Å"wide nature of topics and deviating points of view† (Hart 1982). Harvey argues that â€Å"Inconvenience arising from the search for causality between human and physical environment ideas and the predictions of spatial patterns† are often discussed (Harvey 1969.) However, Clarke argues that there is a â€Å"widespread connection in terms of the spatial point of view, which cements the study of geography† (Clarke et al 1987). Examples of spatial variables include; â€Å"area, direction, range distance, spatial geometries and patterns, isolation, diffusion, spatial connectivity, spatial associations and scale† (Abler et al. 1971). Mitchelson has described these variables as â€Å"geographic primitives† (Mitchelson, unpublished). Geographical spatial thinking tends to oscillate between two poles as there is no clearly defined geographical or landscape space this had let to the emergence of the concepts of absolute and relative space. The shaping of geographical space is under the influence of both these poles. Harvey argues that absolute space is a synonym of emptiness, Kant supports this by saying that â€Å"space may exist for its own sake independent of matter. Space just ‘is’ and should be viewed as a ‘container for elements of the earth’s surface† (Harvey 1969).   In other words, the job of Geography is to fill this ‘container’ with information and ideas. This sums up the Euclidian point of view of absolute scale, usually based on a defined grid system, common in conventional cartography, remote sensing and the mapping sciences. It is relatively easy to view ‘sub containers’ within a ‘container’ and to devise suitable categorization schemes. For example a CBD area may have several districts, areas, or neighbourhoods, all of which may show ever-smaller areal units. With the idea of absolute space, the conception of spatial hierarchies is comparatively uncomplicated. The relativistic point of view, involves two considerations. Initially, space exists only with reference to spatial elements and processes. The ‘relevant’ space is clear by spatial processes taking place, e.g. migration and commuting patterns, dispersion of pollutants and even the diffusion of ideas and information. Scales and regions are defined relatively by the relationship between or amongst spatial patterns forms and functions, processes and rates. This means space is defined in non-Euclidean terms, even â€Å"distance may be relative† (Harvey 1969). Two areas of landscape separated by a barrier may be close in absolute space but very distant in relative space when time, rates, and interactions are considered. Hence, how a functional spatial process region is difficult to map in terms of absolute space. Calls for a more broad-scale study are evident with demand for advanced techniques and applications of geographic information systems (GIS). Broad scale problems can realistically be solved by these techniques, which use absolute space almost exclusively. It has been argued that most modern work in geography involves a â€Å"relative view of space† (Harvey 1969; Abler et al. 1971) due to the spatial processes and mechanisms involved. There have been a lot of recent debates as to the â€Å"appropriate scale of analysis for various processes† (Nir 1987). However, there is an agreement between geographic scholars that changes in scale change the important relevant variables. Furthermore, Mitchelson argues that the â€Å"value of a phenomenon at a particular place is usually driven by causal processes which operate at differing scales† (Mitchelson, unpublished). We can analyse the study of human migration as an example. Often included are variables in relation to labour demand, investment and business climate, and income, i.e. these are group and structural contextual variables. In comparison, intra-urban migration models often involve the age, education and income of individuals. Similarly, looking at how water supply networks are planned in third-world countries, investigations at a national scale often involve urban and regional water demands. In contrast, at a village scale, walking time and the distance to a spout may be unsurpassed concerns. This leads on to behavioural geography, examining the use of space by individuals and the timing of this use. This approach has been termed â€Å"activity space and time space geography† (Carlstein and Thrift 1978). The most routine human activities involve the shortest spaces and time. This is reflected by the view that the â€Å"most frequent movements are of the shortest distance and demonstrate effort-minimization principles† (Zipf 1949). Thus how different spatial activities have radically different time and space scales. Spatial analysis has shown methodological problems. Tobler stated the problem of spatial correlation in his first law of geography: â€Å"near things are more related than distant things† (Tobler, 1969). This is the idea that every spatial element may be correlated. Without Tobler’s idea it could be said that the surface of the earth would appear entirely random. Spatial autocorrelation is the basis for the recognition of spatial variability e.g. ground versus water, field versus woodland, high density versus low density etc. Harvey has further argued that it is often â€Å"useful to search for the level of resolution which maximizes the spatial variability of a phenomenon†. (Harvey 1969). It has also been argued that there is inference of spatial process from spatial form and that most processes are discovered under spatial form, however, empirical results are usually scale specific. In other words â€Å"patterns which appear to be ordered at one scale may appe ar random at other scales† (Miller 1978). However, recently, rules have been developed for optimal spatial sampling and data grouping to reduce the loss of such inference, this can be found in work by Clark and Avery 1976. Watson (1978) argues that a solution to poor spatial data coverage is the â€Å"development of a model of spatial relationships that couples to hierarchical levels†. In other words, not a lot of studies in geography have combined macrospatial and mircospatial levels of analysis because of the incredibly large amount of data needed, producing very complex models. However, we already have many of the data rich variables at near global scales which can then in turn be used as the driving variables in predicting spatial patterns at much broader scales. It may be appropriate to find the appropriate constraints for the spatial hierarchies of concern in order to improve the spatial modelling aspect of Geography. Steyn argues that â€Å"disciplines concerned primarily with processes such as meteorology are able to switch scales very easily† (Steyn, 1981). In comparison, disciplines dealing with phenomenon are often restricted by the size of the actual phenomenon. For example, larger regions tend to incorporate more potential interactions and have a greater degree of centrality bias. In conclusion, the thesis reviews space and time scales from a geographers point of view. It can be found that spatial phenomena comes in a vast variety of different size classes, much work has been conducted across many orders of spatial magnitude. Despite many appeals for multiscaler research e.g. Abler 1987; Miller 1970; and Stone 1968. This is practiced very little, despite evidence that good multiscale work apparently meets data handling thresholds accurately and quickly. As various disciplines under what can be called the umbrella of environmental sciences begin to incorporate diverse spatial dimensions into their research agendas, problems with spatial scale are expected to be encountered. Many of these problems have already been recognized if not solved. Even so, it is still worth noting Clarke’s (1985) admonition, â€Å"No simple rules can automatically select the ‘proper’ scale; for attention.† Essentially, scale is the foundations upon which the home of Geography is built upon. Its various rooms are the arguments and theories behind scale, the floors are the advancements into hierarchical theory. The roof is the final piece solving the spatial dimension scale that places a shelter over Geographers heads and covers us from the elements of inferences in scale. Bibliography Abler, R.F. 1987. What shall we say? To whom shall we speak? Ann. Assoc. Am. Geogr. Abler, R.F., Adams, J. and Gould, P. 1971. Spatial organization: the geographer’s view of the world. Prentice-Hall, Inc., New Jersey. Board, C. 1967. Maps as models. In Models in Geography. pp. 671-726. Methuen and Co., Ltd., London. Carlstein, T. and Thrift, N. 1978. Afterword: towards a time-space structured approach to society and the environment. in Human Activity and Time Geography. pp. 225-263. Clarke, M.J., Gregory, K.J. and Gurnell, A.M. 1987. Introduction: change and continuity in physical geography. In Horizons in Physical Geography. pp. 1-5. Barnes and Noble Books, Totowa, New Jersey. Clarke, W.A.V. and Avery, K.L. 1976. The effects of data aggregation in statistical analysis. Geogr. Harvey, D. 1969. Explanation in Geography. St Martin’s Press, New York. Hart, J.F. 1982. The highest form of the geographer’s art. Ann Assoc. Am. Geogr. 72: 1-29. Miler, D.H. 1978. The factor of scale: ecosystem, landscape mosaic and region. In Sourcebook on the Environment. pp. 63-88. University of Chicago Press, Chicago. Miller, D.H. 1978. The factor of scale: ecosystem, landscape mosaic and region. In Sourcebook on the Environment. pp. 63-88. University of Chicago Press, Chicago. Mitchelson, R.L. Concerns About Scale, unpublished. Nir, D. 1987. Regional geography considered from the systems approach. Geoforum 18(2): 187-202. Steyn, D.G. 1981. On scales in meteorology and climatology. Clim. Bull. 39: 1-8. Stone, K.H. 1968. Scale, Scale, Scale. Econ. Geogr. 44:94. Tobler, W.R. 1969. Geographical filters and their inverses. Geogr.1:234-253. Watson, M.K. 1978. The scale problem in human geography. Geogr. Ann. 60B: 36-47. Zipf, G.K. 1949. Human behaviour and the principle of least effort. Addison-Wesley Press, Camrbdige.

Past Perfect Progressive Definition and Examples

Past Perfect Progressive Definition and Examples A verb construction (made up of had been a present participle) that points to an activity or situation that was ongoing in the past. Also known as past perfect continuous. Also see: AspectPast PerfectProgressive AspectPast Progressive Examples and Observations He knew that she had been dreaming that night and he knew what her dreams were about.(W. Somerset Maugham, Christmas Holiday, 1939)For an hour the old man had been seeing black spots before his eyes and the sweat salted his eyes and salted the cut over his eye and on his forehead.(Ernest Hemingway, The Old Man and the Sea, 1952)If she had been pretending, she would have hidden for a reasonable time before coming out and telling her story.(C.S. Lewis, The Lion, the Witch and the Wardrobe, 1950)I felt like an extraordinary hero. I was only five or six and I had the whole of life in my hands. Even if I had been driving the carriage of the sun I could not have felt any better.(Dario Fo)The jaws fell, the ears drooped more limply. He had been looking like a dead fish. He now looked like a deader fish, one of last years, cast up on some lonely beach and left there at the mercy of the wind and tides.(P.G. Wodehouse, Right Ho, Jeeves, 1934)I was sixteen years old and more, and I had not yet done anything the Grandfathers wanted me to do, but they had been helping me.(John G. Neihardt, Black Elk Speaks, 1932) Mr. Churchill was better than could be expected; and their first removal, on the departure of the funeral for Yorkshire, was to be to the house of a very old friend in Windsor, to whom Mr. Churchill had been promising a visit the last ten years.(Jane Austen, Emma)The past perfect progressive (had been -ing) tells us about the length of the action and the specific point when it ended. It occurs frequently with since or for to specify the duration of the action.(Ann Raimes, Exploring Through Writing. Cambridge University Press, 1998) Also Known As: past perfect continuous

Crimes of Serial Killer Gary Michael Hilton

Crimes of Serial Killer Gary Michael Hilton Gary Michael Hilton is an American serial killer who  murdered and beheaded four hikers in Florida, North Carolina, and Georgia between 2005 and 2008. Hilton is sometimes referred to as the National Forest Serial Killer since most of his victims bodies were found in national parks. Although convicted in only four cases, he is believed to have committed many more killings. Trail of Death In January 2008, Hilton was sentenced to life in prison in Georgia for the death of Meredith Emerson, 24, of Buford, Georgia. After that case, authorities from Georgia, North Carolina, and Florida  began piecing together evidence left behind by a trail of bodies that fit Hiltons modus operandi.  He was subsequently charged with and convicted for three additional murders. In April 2011, Hilton received a Florida death sentence for the murder of 46-year-old Cheryl Dunlap. Two years later, in 2013, he was sentenced in North Carolina to four life sentences for the 2007 deaths of  John Bryant, 80, and Irene Bryant, 84. The Meredith Emerson Case On New Years Day 2008, 24-year-old University of Georgia graduate Meredith Emerson went hiking on Blood Mountain in the Chattahoochee National Forest with her dog Ella, which she had done on many previous occasions. This time, however, she failed to return from the hike. Witnesses remembered seeing Emerson talking with a gray-haired man who appeared to be in his sixties and had a red dog named Dandy. Emerson used her wits and martial arts training to fight off her attacker for four days, desperately trying to save her life.  Eventually, she suffered a blow to the head  that incapacitated her. Hilton killed her and left her decapitated body in the north Georgia mountains. After Emersons disappearance, investigators working the case found surveillance photos of Gary Michael Hilton trying to use Emersons ATM card. In February 2008, Gary Michael Hilton was indicted, pleaded guilty, and was sentenced to life in prison- all in a single day. The Cheryl Dunlap Case On April 21, 2011, Hilton was convicted for the February kidnapping, robbing, murder, and dismemberment of Cheryl Hodges  Dunlap, a 46-year-old Sunday school teacher from Crawfordville, Florida. Dunlaps decapitated body was discovered in the Apalachicola National Forest. Despite efforts to fight it, Hilton had been extradited to Florida to face charges for Dunlaps murder.  Hed avoided the death penalty in Georgia but would not be so lucky at his second trial. A Tallahassee jury of six women and six men deliberated for only one hour, 20 minutes before unanimously recommending a death sentence for the serial killer whod avoided execution in Georgia.   The John and Irene Bryant Case In April 2013, Hilton pleaded guilty and was sentenced to four additional life sentences in federal prison for kidnapping and murdering an elderly North Carolina couple in Pisgah National Forest in the Appalachian Mountains of western North Carolina. Hilton had been camping scouting for potential victims before selecting and ambushing the Hendersonville couple who were out for a hike on October 21, 2007. He killed Irene Bryant using blunt force. Her body was later found by authorities several yards from where the couple had parked their car.  Hilton then kidnapped her husband, took his ATM card, and coerced him into providing his personal identification number to access money from an ATM. Mr.  Bryants body was found in  Nantahala National Forest. A day later, on October 22, 2007, Hilton used the Bryants’ ATM card in Ducktown, Tennesee, to withdraw $300. Federal authorities became involved with Hiltons prosecution after autopsy results showed that John Bryant died of a gunshot to the head from a .22 Magnum firearm. Other Possible Victims Hilton is believed to have killed Rossana Miliani, 26 and Michael Scot Louis, 27, among others. On December 7, 2005, Rossana Miliani disappeared while hiking in Bryson City. A shopkeeper told the police that Miliani, who appeared very nervous, came into her store with an older man who looked to be in his sixties. The witness reported that they purchased clothing and that the man told her he was a traveling preacher. It was later learned that Hilton had stolen  Milianis bank card and was trying to use it. Miliani was beaten to death but Hilton was not charged.   On December 6, 2007, the decapitated and dismembered body of Michael Scot Louis was found in Tomoka State Park near Ormond Beach, Florida. The Aftermath and Legacy Hilton remains on death row.  A judge delayed his appeal in the wake of a U.S. Supreme Court decision in January 2016 declaring Floridas death penalty law unconstitutional. In a chilling footnote to the case, it came to light that Hilton had once been involved in the development of a murder movie that bore similarities to the crimes for which he was eventually convicted. An Atlanta attorney, who also produces movies, revealed that in 1995, Gary Michael Hilton helped him come up with the plot for the film Deadly Run.

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ACKNOWLEDGEMENTS & ABSTRACT - Essay Example Lastly, I am deeply grateful to my brother, who patiently assisted me and helped me succeed in completing this project. The cost of non-renewable energy is increasingly rapidly over time. In addition to increasing costs, non-renewable energy sources are also damaging to the environment and risk depleting precious resources. It appears that batteries may be a good alternative providing that their source is renewable. In addition, batteries can be used as a power source in areas where traditional power sources are not accessible. In many isolated areas of the countryside, lead-acid batteries have become a popular and dependable source of energy for many people due to the lack of efficient power grids used in urban areas. Lead-acid batteries are often used as secondary power sources, although some people, particularly in rural areas, use them as the main source of power. Due to this need for more accessible, dependable power sources in rural areas, I am developing an affordable, multipurpose lead-acid battery charger. This battery charger is being designed with the specific needs of people in isolated r ural areas in mind and to be used particularly in outdoor situations. This lead-acid battery charger circuit design is ideal for 6-12v batteries and will be able to charge lead-acid batteries during the sunlight hours by utilizing solar power, a renewable power source. This circuit battery charger will utilize a regulator and a comparator to control the power that travels between the solar cell panel and the battery unit, which promotes efficient charging. In whole-battery operations, the circuit battery charger will charge the battery to full capacity while at the same time limiting over-charging and increasing battery life. The second unit informs the user of the charging status of the battery, and consists of four LEDs. Simulation of

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