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131.
This paper explores the phenomenon of attachment to place in old age. Three complementary dimensions of attachment—physical, social and autobiographical insideness—are identified from a three year in-depth study of elderly residents of an Appalachian community. It is argued that autobiographical insideness may be particularly important to old people in sustaining a sense of personal identity and may be adaptive in old age. The paper develops the hypothesis that the increasing mobility of current elderly generations is resulting in changing manifestations of attachment to place. Whereas the old-old (persons over 75 years of age) remain strongly attached to their proximate physical environment, the young-old (those under 75 years of age) appear to be developing identifications with places that involve greater emphasis upon vicarious involvement in displaced settings.  相似文献   
132.
133.
The resource curse   总被引:7,自引:0,他引:7  
Countries that possess rich mineral deposits, it is widely assumed, are fortunate. Such deposits are assets, part of a country's natural capital. Mining is the key that converts dormant mineral wealth into schools, homes, ports, and other forms of capital that directly contribute to economic development. Over the past two decades, however, a more negative view of mining has emerged that questions the positive relationship between mineral extraction and economic development. The impetus for the alternative view came from empirical studies suggesting that countries where mining is important have not grown as rapidly as other countries. More recent studies have explored the possible reasons behind the disappointing performance of many mineral producing countries. While the central point of contention between the conventional and alternative views — namely, whether or not mining usually promotes economic development — remains unresolved, there is widespread agreement that rich mineral deposits provide developing countries with opportunities, which in some instances have been used wisely to promote development, and in other instances have been misused, hurting development. The consensus on this issue is important, for it means that one uniform policy toward all mining in the developing world is not desirable, despite the recent suggestions by some to the contrary. The appropriate public policy question is not should we or should we not promote mining in the developing countries, but rather where should we encourage it and how can we ensure that it contributes as much as possible to economic development and poverty alleviation.  相似文献   
134.
A passive sampler has been developed and is demonstrated in situ for urban runoff. The passive sampler is compared to conventional composite (time-dependent and flow-weighted) bottle sampling during and between storm events. The sampling was carried out at established stormwater stations; before and after a stormwater detention pond. In situ deployment of the passive sampler provides the metal concentrations, corresponding to the electrochemically available fraction of total metal, for time-dependent samples collected in parallel. The sampler provides improved accuracy compared to bottle sampling because contamination during sample transport and handling is minimised. Laboratory handling is reduced by direct analysis of the accumulated metals on the receiving membrane by laser ablation inductively coupled plasma mass spectrometry. Passive sampling also solves the problem of metal speciation change during transport to the laboratory, which is a potential problem for bottle samples. The low cost and convenience of the passive sampler and subsequent analysis should allow significantly more extensive spatial and temporal monitoring of metals in the aquatic environment than has previously been possible.  相似文献   
135.
Community-based ecosystem monitoring activities in Canada are increasing in response to a number of factors including: (i) the needs of decision-makers for timely information on local environmental changes; (ii) limited use of government monitoring data and information by decision makers; (iii) government cuts to monitoring programs; (iv) the increasingly recognized need to include stakeholders in planning and management processes; and (v) the desire of citizens to contribute to environmental protection. To date there has been no network coordination of community based monitoring in Canada. This paper reports on the establishment of the Canadian Community Monitoring Network by Environment Canada's Ecological Monitoring and Assessment Network Coordinating Office and the Canadian Nature Federation. Information on research prepared in support of network establishment is presented along with a discussion of the potential of the network.  相似文献   
136.
Biological monitoring of a pulp and paper mill wastewater   总被引:1,自引:0,他引:1  
The physico-chemical testing required under the E.P.A. licence enables one to gauge the chemical effects of the APM wastewater on the Latrobe River, but it tells us nothing about likely effects on the aquatic biota. The APM bio-monitoring programme was instigated to provide evidence of any effects of wastewater discharges on the rivers biota. To date the programme has shown no adverse impact downstream. The laboratory bioassays on fish and algae have recently given way to the river fauna surveys as the regular monitor of wastewater quality. It is intended to continue with regular river surveys using the river's residents as indicators of water quality and future surveys will investigate reasons for the presently obscure variation in macro-invertebrate populations.  相似文献   
137.
We investigate the correlation between stress-related compounds produced by corals of the Great Barrier Reef (GBR) and local atmospheric properties—an issue that goes to the core of the coral ecosystem’s ability to survive climate change. We relate the variability in a satellite decadal time series of fine-mode aerosol optical depth (AOD) to a coral stress metric, formulated as a function of irradiance, water clarity, and tide, at Heron Island in the southern GBR. We found that AOD was correlated with the coral stress metric, and the correlation increased at low wind speeds, when horizontal advection of air masses was low and the production of non-biogenic aerosols was minimal. We posit that coral reefs may be able to protect themselves from irradiance stress during calm weather by affecting the optical properties of the atmosphere and local incident solar radiation.  相似文献   
138.
Although job seekers' reputation perceptions may be based on different factors than other constituents (e.g., investors, consumers), we know little about the antecedents of job seekers' reputation perceptions. The present study utilizes verbal protocol analysis to explore the factors that job seekers consider when evaluating employers' reputations. Results from this qualitative investigation are complemented and cross‐validated with an experimental policy capturing study and a field study of recruiting organizations. Data from all three methodologies suggest that some factors affecting job seekers' reputation perceptions are quite different from factors that have been revealed in previous reputation research, which has focused primarily on executives. For example, results from the present study reveal that the type of industry in which a firm operates, the opportunities that a firm provides for employee development, and organizational culture affect job seekers' reputation perceptions. Copyright © 2000 John Wiley & Sons, Ltd.  相似文献   
139.
The ‘Perfect Storm’ metaphor describes a combination of events that causes a surprising or dramatic impact. It lends an evolutionary perspective to how social-ecological interactions change. Thus, we argue that an improved understanding of how social-ecological systems have evolved up to the present is necessary for the modelling, understanding and anticipation of current and future social-ecological systems. Here we consider the implications of an evolutionary perspective for designing research approaches. One desirable approach is the creation of multi-decadal records produced by integrating palaeoenvironmental, instrument and documentary sources at multiple spatial scales. We also consider the potential for improved analytical and modelling approaches by developing system dynamical, cellular and agent-based models, observing complex behaviour in social-ecological systems against which to test systems dynamical theory, and drawing better lessons from history. Alongside these is the need to find more appropriate ways to communicate complex systems, risk and uncertainty to the public and to policy-makers.  相似文献   
140.
l-Aspartic acid was thermally polymerized in the presence of d-sorbitol with the goal of synthesizing new, higher molecular weight water soluble and absorbent copolymers. No reaction occurred when aspartic acid alone was heated at 170 or 200 °C. In contrast, heating sorbitol and aspartic acid neat or with ammonium hydroxide gave a mixture of water soluble and insoluble copolymers of polysuccinimide and sorbitol. In the presence of phosphoric acid, sorbitol aspartate ester copolymers having both water soluble and highly swollen gel components were formed. These results indicate that polysaccharides such as sorbitol can readily react to form copolymer ester/amides with aspartic acid and such copolymers may have utility as biodegradable water soluble and swellable polyampholytes.  相似文献   
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