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131.
GARRY D. WORTH 《Geographical Research》1996,34(1):88-94
The Tilligerry Peninsula on the central NSW coast supports a significant Koala population. By 1992 residential and mining developments had reduced the identified Koala habitat on this peninsula to less than half of what was apparent in 1954. A major part of the habitat loss was caused by mining for silica and heavy mineral sands in the corridors connecting the forests of the peninsula to other areas of Koala habitat. The degree of habitat loss in three types of land use over four periods between 1954 and 1992 is examined. 相似文献
132.
This paper considers the impact of technology on methods used to classify land potential. With developments in new technologies such as Expert Systems (ES) and Geographic Information Systems (GIS), McKeown (1987) proposes a new method by which to explain the decision making process for land classification to an end user. Consideration is given to McKeowns' concept and the literature reviewing both traditional land classification methods and ES and GIS systems. 相似文献
133.
Dave D. Davis 《Journal of Archaeological Method and Theory》1996,3(2):159-188
The Revolution of 1959 brought forth changes in the mission, theoretical orientation, and organization of archaeology in Cuba and created a role for, and constraints on, the profession that are unique in the Western Hemisphere. This paper draws upon examples from substantive field and laboratory research to examine the methods and theoretical perspectives of Cuban archaeology since the Revolution, focusing on the period from 1962 until the collapse of the Soviet Union. Archaeological practice during the Revolutionary period in Cuba has reflected the aims of the Revolutionary government, the influence of Soviet archaeology, the legacy of pre-Revolutionary approaches in North American archaeology, and the Cuban sense ofpatria. 相似文献
134.
The characterization of various samples of white marble from the archaeological site of Tharros (Sardinia) is the starting point for the reexamination of the capabilities of electron spin resonance (ESR) spectroscopy as a tool for identifying the quarries of origin of ancient marble artefacts. Existing methods and data bases are employed for the assignment of our samples, but also reviewed to see if a more extensive use of the technique is feasible. It turns out that ESR spectroscopy, coupled with other available methods, may readily provide valuable information, often yielding the final answer to the problem of marble provenance. However, it is also clear that much work has still to be done to standardize the data collection and analysis procedures and to expand the available data base. 相似文献
135.
Philip R. Israilevich Geoffrey J. D. Hewings Michael Sonis & Graham R. Schindler 《Journal of regional science》1997,37(4):565-590
The sophistication of regional economic models has been demonstrated in numerous ways, most recently in the form of linking several modeling systems or in the expansion in the number of equations that can be manipulated successfully to produce impact analyses or forecasts. In this paper, an alternative perspective is employed. What do regional macro-level forecasts indicate about the process of structural change? A new methodology is illustrated that enables analysts to make forecasts of detailed structural change in the interindustry relations in an economy. Using a regional econometric input-output model developed for the Chicago metropolitan region, derived input-output tables are extracted for the period 1975–2016. These tables are then analyzed to determine the forecasted direction of structural changes for the region. The innovation illustrated here is based on a model that exploits the general equilibrium spirit of computable general equilibrium models through the adjustment of input coefficients to clear markets. 相似文献
136.
137.
National parks can no longer be considered as pristine ecosystems protected by impenetrable boundaries. It is now realised that many forces outside national park boundaries create significant changes within those boundaries. To date, most attention has focussed upon penetration by biophysical factors. This paper addresses another aspect, external influence over decision making in the parks. It suggests that three main groups - entrepreneurs, environmentalists, and aboriginal peoples - have been dominant in different time periods, and uses case studies to illustrate the rise to current prominence of aboriginal peoples. Reasons are suggested for this ascendancy.
Les pares nationaux ne peuvent plus être considérés comme des écosystèmes primitifs protégés par des limites impénétrables. On remarque à présent que beaucoup de forces en dehors des limites des pares nationaux peuvent créer des changements significatifs à &lcaron intérieur de ces limites. Jusquà maintenant la plupart des études ont traité de la pénétration par des facteurs biophysiques. Cet article traite &dcaron un autre facteur, une influence externe qui agit sur les décisions prises au sujet des pares. Nous suggérons que trois groupes principaux - les entrepreneurs, les écologistes et les populations autochtones - ont été dominants à des époques différentes, et soumettrons des études de cas pour illustrer comment les populations autochtones sont arriveées à la dominance. Nous offrirons également des raisons pour cette ascension. 相似文献
Les pares nationaux ne peuvent plus être considérés comme des écosystèmes primitifs protégés par des limites impénétrables. On remarque à présent que beaucoup de forces en dehors des limites des pares nationaux peuvent créer des changements significatifs à &lcaron intérieur de ces limites. Jusquà maintenant la plupart des études ont traité de la pénétration par des facteurs biophysiques. Cet article traite &dcaron un autre facteur, une influence externe qui agit sur les décisions prises au sujet des pares. Nous suggérons que trois groupes principaux - les entrepreneurs, les écologistes et les populations autochtones - ont été dominants à des époques différentes, et soumettrons des études de cas pour illustrer comment les populations autochtones sont arriveées à la dominance. Nous offrirons également des raisons pour cette ascension. 相似文献
138.
This paper describes the use of electron spin resonance spectroscopy to estimate the degree of heating of quartzite cobbles from hearths on the floor of the archaeological remains of an eighteenth-century Dutch colonial slave lodge. A novel technique based on the comparison of line intensities for the E’and O-2 centres in quartz distinguished successfully between cobbles which had been heated to estimated temperatures ranging from 300 °C to 450° C and controls from an adjacent stream bed. This inexpensive and simple technique could be applied to a wide range of archaeological problems involving the thermal history of objects consisting of or containing quartz. 相似文献
139.
140.
Kevin D. Ingram Kenneth E. Daugherty James L. Marshall 《Journal of archaeological science》1993,20(6)
Several samples of pyramids from Giza were obtained. The samples were analysed by scanning electron microscopy, electron diffraction by X-rays, powder X-ray diffraction, inductively coupled plasmography, Fourier-transform infrared spectroscopy and other techniques. Some scientists who have recently studied the pyramids have suggested that the pyramids were poured into place, stone by stone. The prevailing theory among Egyptologists is, of course, that the pyramids were built from blocks of natural stone. All of the results obtained during this study directly support the concept that the pyramids are made of limestone and are not cementitious in nature. 相似文献