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91.
The fisheries is one of the most dangerous industries in Canada. Possible contributory causes of the high rate of injuries are a fatalistic attitude to accidents and safety, and a high level of anxiety and worry among fishermen. These characteristics would be expected to lead to less attention to safety procedures and a consequent greater risk of accidents. The purpose of this study was to explore fishermen's levels of fatalism and anxiety; to consider the relationship of these factors to the frequency of accidents and extent of safety precautions; and to explore fishermen's explanations of and suggested solutions to the high rate of injuries at sea. The study was conducted among a sample of inshore fishermen who fished in the waters around Newfoundland. Fifty-five fishermen completed a questionnaire that requested basic demographic details, information on injuries obtained, safety precautions taken, perceived locus of control over accidents, anxiety, worries and explanations for accidents and possible measures to reduce them. Analysis of their replies revealed that the fishermen reported a high level of anxiety and that those who reported most anxiety reported more injuries and fewer safety precautions.  相似文献   
92.
93.
The wide-scale use of methyl tertiary butyl ether (MTBE) in gasoline has resulted in substantial public controversy and action to ban or control its use due to perceived impacts on water quality. Because oxygenates are still required under federal law, considerable research has focused on ethanol as a substitute for MTBE. In this article, we summarize the currently available literature on the air and water quality risks and benefits of MTBE versus ethanol as alternative fuel oxygenates. We find that MTBE-fuel blends are likely to have substantial air quality benefits; ethanol-fuel blends appear to offer similar benefits, but these may be at least partially negated because of ethanol's propensity to increase emissions and ambient concentrations of some air contaminants. Releases of gasoline containing either MTBE or ethanol could have an impact on some drinking water sources, although the impacts associated with MTBE tend to relate to aesthetics (i.e., taste and odor), whereas the impacts associated with ethanol generally relate to health risk (i.e., greater exposure to gasoline constituents such as benzene). It is likely that these water quality impacts will be outweighed by the air quality benefits associated with MTBE and perhaps ethanol use, which affect a much larger population. A lack of data on environmental exposures and associated health impacts hinders the completion of a comprehensive quantitative risk-benefit analysis, and the available air and water quality data should be evaluated in a broader risk-management context, which considers the potential life-cycle impacts, costs, and feasibility associated with alternative fuel oxygenates.  相似文献   
94.
The Southern California Edison Company (SCE) has instituted a series of control strategies designed to minimize human exposure to polychlorinated biphenyls (PCBs) in electrical equipment used on its system. This paper describes a method of analyzing PCB risks using conservative estimates of human intake of PCBs originating from accidental spills from electrical equipment. The PCB releases from the Edison system were determined. The fate of these releases in soil, air, and water was analyzed to determine how much material reaches human receptors. The air and water pathways were determined to be the most likely candidates for the exposure and risk considerations. PCB intake via ingestion of soil at the spill site was neglected as an exposure pathway. Equipment spills without controls resulted in at the most 2 ng/day human intake of PCBs via the water exposure pathway. This was determined to be negligible in comparison with intake rates used in conjunction with the setting of food tolerance levels based on fish being the main dietary pathway of human exposure. The inhalation exposure of the hundred or so persons in the immediate vicinity of a spill was determined to equal the PCB intakes of the fish-eating subpopulation analyzed by the Food and Drug Administration for 2 ppm tolerance standard in the case of no controls or cleanup. Current cleanup procedures assure that even the persons in the immediate area are well below the intake of the subjects in the fish contamination analysis. All exposures were well below a "virtual safe dose" level estimated in the fish tolerance study.  相似文献   
95.
This paper draws on the work of the Housing Plus Services committee of the National Low Income Housing Coalition (to which the authors belong), constituted in 2000. The Committee is comprised of a diverse group of practitioners, administrators, policy analysts, professors, and researchers who share a commitment to the integration of services in housing settings. Committee members present their work, including the typology and principles discussed in this paper, at national conferences (NLIHC, 2005) and contribute to publications on the web (Housing Plus Services Committee, 2005a) and in print (Cohen, Mulroy, Tull, White, & Crowley, 2004), in order to disseminate the work of the NLIHC in this area and engage in dialogue with service providers, housing developers, and policy makers.  相似文献   
96.
Objectives. This study examines whether the mental health consequences associated with food insufficiency vary by food stamp participation status and/or the value of the food stamp benefit received. Methods. We use longitudinal data from the Panel Study of Income Dynamics along with fixed‐effect methods that control for unobserved heterogeneity to test our hypotheses. Results. We find that, conditional on the food stamp benefit amount, the emotional distress associated with food insufficiency is higher among food stamp participants. Moreover, we find evidence of a dosage effect such that food‐insufficient individuals who receive higher amounts of food stamp benefits suffer greater emotional distress than food‐insufficient individuals who receive lower levels of food stamp benefits. However, the negative mental health effects of food insufficiency and food stamp participation are driven primarily by periods of transition onto the Food Stamp Program and into food insufficiency. Conclusions. The negative mental health aspects of participating in the Food Stamp Program seem to outweigh the positive mental health aspects, at least during the period of application and initial receipt, suggesting that programmatic reform is needed to improve overall well‐being among new participants.  相似文献   
97.
A diversity of indigenous and alien wildlife persists in suburbia, and provides residents with the opportunity to experience wildlife. Suburban gardens may serve as refugia and foraging grounds for many primate species allowing them to populate within a largely urbanized landscape. However, this has led to the increasing human interactions with them, resulting in conflict. Our study investigated the perceptions of suburban residents towards urban vervet monkeys Cercopithecus aethiops pygerythrus within the Msunduzi and Ethekwini municipalities, KwaZulu-Natal, South Africa. We assessed how these related to the monkeys’ presence, activities and interactions in residential gardens, and the value of wildlife to residents. Assessment was conducted through an online questionnaire survey. General attitudes of residents to vervet monkeys were canvassed by assessing the respondents’ level of active engagement in wildlife watching within their properties. We analyzed 603 surveys submitted online using logistic regression and ordinal regression models. We ascertained that vervet monkeys were disliked by 29% of residents due to their aggressiveness, destructive behaviour in gardens and households, and perceived threat to native wildlife. Frequency and duration of foraging vervet monkeys in residents’ gardens was influenced by the presence of pet dogs, fruiting trees, tall trees (>2 m), ratio of indigenous to alien vegetation of gardens, residency type, and active and passive food provisioning. Despite conflict, the majority of respondents appreciated urban wildlife (67%) and actively engaged in wildlife watching (88%), emphasizing the importance of incorporating human dimension values into the management of urban biodiversity. Our study highlights the value of citizen science in providing mechanisms for identifying priority management and conservation efforts at the highly complex human-wildlife interface in an urbanized landscape.  相似文献   
98.
Understanding the factors determining the occupancy and detection probability of birds in human dominated environments is important for their conservation. In this study we investigated various environmental variables believed to influence the site occupancy and detection probability of Trumpeter Hornbill (Bycanistes bucinator) in urban-forest mosaics of KwaZulu-Natal, South Africa. Presence/absence data were collected from a total of 50 point count stations established between September 2014 and March 2015 in urban-forest mosaics of Durban, Eshowe and Mtunzini. Mean occupancy rate of Trumpeter Hornbill was 0.40 ± 0.09 with a low detection probability of 0.28 ± 0.04. For Trumpeter Hornbills, large trees influenced their occupancy positively (sum AIC weight (ω i ) = 79%) while relative human abundance negatively influenced their occupancy (ω i = 91%). Model selection suggested that housing density had a strong negative influence on detection probability of Trumpeter Hornbills (ω i ?=?82?%?) and availability of fruiting trees influenced their detection positively (ω i ?=?29%). With continued changing land use in KwaZulu-Natal, these finding are important for conservation of Trumpeter Hornbills as we provide insight into landscape variables or features that influence Trumpeter Hornbill’s occupancy and detection in areas of urban-forest mosaics.  相似文献   
99.
ABSTRACT

Models of collaborative primary health care were introduced in Ontario in 2005 with the goal of providing comprehensive care, including that of mental health, to patients. While the success of this model of health care delivered through Family Health Teams (FHT) has been established, evidence based guidelines to guide mental health therapists regarding the number of sessions needed to treat common issues such as depression and anxiety seen within this model is lacking. The goal of this study was to gain a better understanding of how therapists conducted therapy, including type of intervention, under a physician determined eight session cap. Questionnaires completed by the therapists after the first session and again when therapy ended, a focus group and a chart review were conducted over an eight month period involving a total of 147 patients. Several key findings were identified including the unanticipated outcome of a discrepancy between how many sessions were initially thought to be required by the mental health therapist compared to how many sessions were determined helpful by the patient. Conversely, it was also identified that eight sessions was insufficient to treat more severe mental health issues such as trauma. Such results suggest that the treatment of mental health issues within Family Health remains a little understood and explored issue, with the authors suggesting better ways of negotiating session caps reflective of mental health issues addressed within this model of care.  相似文献   
100.
Sexual agreements are ubiquitous among male couples, yet little is known about motivations behind agreements and their association with sexual risk for human immunodeficiency virus (HIV). Qualitative interviews with 39 couples informed the development of the items in the Motivations Behind Agreement (MBA) scale. The scale was validated via exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) using quantitative data from two (790 and 882 men) independent samples of couples. The EFA yielded two factors: relationship quality enhancement motive (RQEM) and sex life enhancement motive (SLEM). The CFA indicated satisfactory global model data fit. Finally, in predicting sexual risk, RQEM and SLEM showed significant interactions with agreement type. For men with monogamous agreements, higher RQEM was associated with less condomless anal sex (CAS) with an outside partner of discordant or unknown serostatus (aOR = 0.15; 95% CI = 0.05, 0.46). For men with nonmonogamous agreements, higher RQEM was associated with less CAS (aOR = 0.76; 95% CI = 0.60, 0.97) while higher SLEM was associated with greater odds of CAS (aOR = 1.57; 95% CI = 1.18, 2.08). Men whose agreements were highly motivated by relationship enhancement were less likely to engage in sexual risk with outside partners regardless of agreement type. HIV-prevention interventions targeting male couples will benefit from incorporating an understanding of couples’ agreement motivations.  相似文献   
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