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121.
This study investigates the relationship between the carbon extractive sector in Canada and renewable energy development. Specifically, it examines the strategies employed by Canadian carbon‐capital firms to shape and control alternative energy and considers if we are witnessing signs of “transition capture” as some oil, gas, and coal firms invest in a gradual shift toward “climate capitalism.” I investigate first, investments by large Canada‐based fossil fuel companies in renewable energy and second, interlocking directorate relations between the fossil fuel sector and the renewables industry. Findings suggest the possibility of a long‐term strategic orientation toward a climate capitalist model of development by some carbon‐capital firms; however, this alignment remains highly tentative, with evidence pointing to an industry that is largely without plans for energy transition.  相似文献   
122.
ABSTRACT: We compare changes in the effect of child support payments on the educational attainment of children age 16 to 19 before and after passage of the Child Support Enforcement Amendments of 1984, which strengthened enforcement of child support obligations in the United States. Using 1979, 1984, and 1988 Current Population Survey data, we hypothesize and find a decline in the positive effect of child support between 1984 and 1988 that exceeds any earlier decline. Instrumental variables estimates provide additional evidence consistent with the idea that child support serves as an indicator of unobservable characteristics of noncustodial fathers who pay support.  相似文献   
123.
The efficiency of a sequential test is related to the “importance” of the trials within the test. This relationship is used to find the optimal test for selecting the greater of two binomial probabilities, pα and pb, namely, the stopping rule is “gambler's ruin” and the optimal discipline when pα+pb 1 (≥ 1) is play-the-winner (loser), i.e. an α-trial which results in a success is followed by an α-trial (b-trial) whereas an α-trial which results in a failure is followed by α b-trid (α-trial) and correspondingly for b-trials.  相似文献   
124.
The paper seeks to examine how social science has attempted to combine the uniqueness of place with general social processes. Two concepts which have traditionally been used to this end are examined; these are ‘locality’ and ‘community’. It is argued that although community has fallen out of favour, problems associated with the use of ‘locality’ could lead to a revival in the use of the former concept. Case study material from rural Wales is presented to show how the two approaches might usefully be combined.  相似文献   
125.
Concerns have been raised regarding the safety of young children who may contact arsenic residues while playing on and around chromated copper arsenate (CCA)-treated wood playsets and decks. Although CCA registrants voluntarily canceled the production of treated wood for residential use in 2003, the potential for exposure from existing structures and surrounding soil still poses concerns. The EPA's Office of Research and Development developed and applied the probabilistic Stochastic Human Exposure and Dose Simulation model for wood preservatives (SHEDS-Wood) to estimate children's absorbed dose of arsenic from CCA. Skin contact with, and nondietary ingestion of, arsenic in soil and wood residues were considered for the population of children in the United States who frequently contact CCA-treated wood playsets and decks. Model analyses were conducted to assess the range in population estimates and the impact of potential mitigation strategies such as the use of sealants and hand washing after play events. The results show predicted central values for lifetime annual average daily dose values for arsenic ranging from 10(-6) to 10(-5) mg/kg/day, with predicted 95th percentiles on the order of 10(-5) mg/kg/day. There were several orders of magnitude between lower and upper percentiles. Residue ingestion via hand-to-mouth contact was determined to be the most significant exposure route for most scenarios. Results of several alternative scenarios were similar to baseline results, except for the scenario with greatly reduced residue concentrations through hypothetical wood sealant applications; in this scenario, exposures were lower, and the soil ingestion route dominated. SHEDS-Wood estimates are typically consistent with, or within the range of, other CCA exposure models.  相似文献   
126.
Why is vaccination against infectious diseases less effective in older patients than in younger ones? Why do the elderly suffer from more frequent and severe infectious episodes than the young? The answer to both these questions is immunosenescence--the poorly defined changes that occur in the immune system as a result of the disrupted performance of multiple components of immunity. Presentations from a recent workshop, which are summarized here, examined these questions and provided some insights from the perspective of improving vaccination strategies among the elderly.  相似文献   
127.
Over the past few decades it has become clear that the immune system and especially T cells are instrumental in achieving a long and healthy life. The European Union (EU) previously supported several pan-European research projects coordinated from Tuebingen, Germany, aimed at providing a better understanding of immunosenescence. For 3 years, until the end of 2005, the EU is supporting a project called T cells in aging (T-CIA). The aim of T-CIA is to spy out and combine current efforts in immunology, molecular biology, and gerontology for a better understanding of why the elderly often have dysregulated immune responses and are more susceptible to infections and cancer.  相似文献   
128.
One of the most significant theoretical contributions to welfare analysis across a range of disciplines has been the development of the capabilities framework by Sen and others. Motivated by the claim that freedom should play a key role in social evaluation, the capabilities framework suggests that we consider what it is that people are free to do, as well as what they actually do. Using data from the British Household Panel Survey in conjunction with a list of substantial values posited by Martha Nussbaum, we contribute to the operationalisation and testing of this approach. Specifically, we suggest that commonly used secondary data sources do provide some information about the capabilities people have and that this can be incorporated into models of (subjective) well-being such as those used by a growing number of labour and health economists. We find evidence that a wide range of capabilities exhibit statistically significant relations to well-being that the relations are complex and slightly different for men and women, and conclude with suggestions for future developments.  相似文献   
129.
Resistance and prevention programming aimed at strengthening women's ability to protect themselves against acquaintance sexual aggression has lacked attention to the cognitive and emotional processes women engage in when encountering such threats. Building upon current theory related to cognitive appraisal and coping processes, this study applies a theoretical model of how women evaluate and respond to sexual aggression by male acquaintances. Two hundred and two college women who had been sexually victimized by male acquaintances responded to a questionnaire that assessed their cognitive appraisals of and emotional and behavioral responses to the incident, in addition to aggression characteristics. Path analytic regression analyses examined theorized relationships among primary and secondary appraisal and emotional response variables in addition to their collective prediction of behavioral responding. The hypothesized model accounted for significant variance in behavioral responding and indicated different patterns of appraisals, emotions, and aggression characteristics predicting women's assertive and diplomatic behavioral responses to their assaults. These findings are consistent with research and theory related to individuals' appraisal of and coping with threatening events. Theoretical and intervention implications for resistance and prevention efforts are discussed.  相似文献   
130.
The author shows that the family doctor's burden of responsibility in the area of psychological dysfunction in the community is immense. Traditionally he has little training, limited knowledge, and a paucity of skills, in the areas of counselling and psychotherapy. The author argues that structural and strategic family therapy skills may be applicable to family practice and of benefit to the family doctor. A brief introductory course and subsequent feedback are described.  相似文献   
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