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51.
Stephen F. McCool Jack Utter 《Journal of the American Water Resources Association》1981,17(3):431-437
Allocating river recreation use to commercial and private sectors on white water rivers has been highly controversial. How this process is implemented may affect not only the availability of recreation opportunities to individual users, but may also negatively impact the user's desire to escape from the pressures and stresses of everyday life. In a study of users of Idaho's Middle Fork of the Salmon River, an Even-Pool allotment technique was preferred over others by the commercial, private, and rejectee individuals sampled. A lottery technique for rationing private use permits was preferred by private users and rejectees, while commercial users preferred Advance Reservation. No relationship was found between the users' stress release/escape expectations and their preferences for the different allotment and rationing techniques studies. Such results suggest that river managers may have considerable latitude in selecting allocation techniques that do not adversely affect on-site recreation experiences. 相似文献
52.
通过济钢集团1年来建立《职业安全健康管理体系》和环境管理体系的实践,阐述了建立体系应注意的问题分析了如何把先进的国际管理体系和企业自身实际相结合,以提升管理水平并取得双认证的成功。 相似文献
53.
Benjamin A. Lyons Ariel Hasell Natalie Jomini Stroud 《Environmental Communication: A Journal of Nature and Culture》2018,12(7):876-894
Some extreme weather events may be more likely to affect climate change beliefs than others, in part because schema individuals possess for different events could vary in encouraging such links. Using a representative sample of U.S. adults and geocoded National Weather Service data, we examine how a range of extreme weather event categories relate to climate change beliefs, and the degree to which individuals’ self-reported experiences are shaped by their political views across event types. For tornado, hurricane, and flood events, we find no link with beliefs. For polar vortex and drought events, we find that although self-reported experience is linked with climate beliefs, reporting of these experiences is influenced by political identity and partisan news exposure. These findings underscore a limited role for extreme weather experiences in climate beliefs, and show that events more open to interpretation, such as droughts and polar vortex disturbances, are most likely to be seen through a partisan lens. 相似文献
54.
职业卫生监管工作实践探讨 总被引:1,自引:0,他引:1
罗天明 《中国安全生产科学技术》2007,3(5):108-110
职业卫生工作是安全生产工作的重要组成部分,是政府履行社会管理和市场监管职能的一项重要任务。做好职业卫生监管工作,对做好安全生产,维护社会稳定,促进经济社会全面发展,构建和谐社会具有十分重要的意义。本文总结了实践中的工作经验,提出了目前我国职业卫生监管工作的难点,如存在认识不足,重视不够、主体责任不落实、可操作性法规滞后、监管体制不顺等难点。根据这些难点,有针对性的提出了开展职业卫生监管工作的方法和途径,并对进一步改善和加强我国的职业卫生监管工作提出了建议。 相似文献
55.
旅行成本法在我国应用中存在的几个问题 总被引:10,自引:1,他引:9
我国旅行成本法案例研究多数未分清旅行成本与旅游目的地本身价格的关系,推导的游憩需求曲线是旅行成本-旅游人次模型,而不是旅游目的地本身的价格-旅游人次需求曲线。文章具体说明了区域旅行成本法的基本原理及操作方法,并用乔光华文章数据重新对达里诺尔国家级自然保护区游憩价值进行计算,对旅行成本的构成等问题进行了讨论,得出其消费者剩余为0.9221×108元a/,比原研究中的0.0937×108元a/高出近10倍。认为乔光华等的研究在推断游憩需求曲线时存在方法上的问题,直接将旅行成本和时间价值作为游憩价值不符合旅行成本法的基本原理和公共物品无(或低)市场价格的经济理论。还对调整后的旅行成本数据进行了计算,得到保护区游憩价值为1.3581×108元a/。 相似文献
56.
57.
Drawing on the idea that biodiversity is simply the diversity of living things, and that everyone knows what diversity and living things mean, most conservation professionals eschew the need to explain the many complex ways in which biodiversity is understood in science. On many biodiversity‐related issues, this lack of clarity leads to a communication gap between science and the general public, including decision makers who must design and implement biodiversity policies. Closing this communication gap is pivotal to the ability of science to inform sound environmental decision making. To address this communication gap, we propose a surrogate of biodiversity for communication purposes that captures the scientific definition of biodiversity yet can be understood by nonscientists; that is, biodiversity as a learning experience. The prerequisites of this or any other biodiversity communication surrogate are that it should have transdisciplinary relevance; not be measurable; be accessible to a wide audience; be usable to translate biodiversity issues; and understandably encompass biodiversity concepts. Biodiversity as a learning experience satisfies these prerequisites and is philosophically robust. More importantly, it can effectively contribute to closing the communication gap between biodiversity science and society at large. Experimentando la Biodiversidad como un Puente sobre el Vacío entre la Comunicación Ciencia‐Sociedad 相似文献
58.
根据新疆12城市的环境空气质量自动监测系统SO2运行情况,对仪器在新疆特殊天气条件下的适用性进行分析,并针对环境空气自动监测系统SO2质量控制(QC)工作中仪器比对校验、异常值判断标准、仪器稳定性、数据准确性等方面进行阐述,旨在从技术、经验和方法及管理等方面为三级站空气质量自动监测系统规范运行及数据分析提供参考和帮助. 相似文献
59.
It is thought that young homing pigeons are able to use information acquired en route for their initial homeward orientation. However, the cues involved and mechanisms utilised are under discussion. Blocking light-dependent route-specific information during the first leg of an outward journey detour, together with analysis of pigeons that were raised under different loft conditions, allowed us to correctly evaluate the functioning of this mechanism and, more generally, the navigational map of birds. Pigeons from the same stock were raised and kept in two different lofts. The birds in the experimental groups were transported to the release sites via detours, and light-dependent information was denied during the first half of the outward journey (no compass information was available). Control birds were transported by the most direct route and had access to all available information. In general, the results showed that the low-loft birds preferred to use magnetic compass cues, whereas the high-loft birds preferred to use navigational map cues to collect information of the first part of the outward journey. The impairments observed in the homing performances of the experimental groups highlight the reliability of information collected inside the map area. Relevant to an understanding of the route-reversal mechanism was the evidence that this mechanism is able to function in the absence of compass information (birds raised in a wind-exposed loft show a detour effect). In systems where directional information could be provided by multiple sources, processing and extracting accurate course trajectories through a common mechanism may prove more efficient and reliable. 相似文献
60.