全文获取类型
收费全文 | 695篇 |
免费 | 24篇 |
国内免费 | 13篇 |
专业分类
安全科学 | 137篇 |
废物处理 | 5篇 |
环保管理 | 229篇 |
综合类 | 227篇 |
基础理论 | 72篇 |
污染及防治 | 7篇 |
评价与监测 | 2篇 |
社会与环境 | 29篇 |
灾害及防治 | 24篇 |
出版年
2024年 | 1篇 |
2023年 | 3篇 |
2022年 | 3篇 |
2021年 | 10篇 |
2020年 | 10篇 |
2019年 | 8篇 |
2018年 | 11篇 |
2017年 | 12篇 |
2016年 | 14篇 |
2015年 | 13篇 |
2014年 | 19篇 |
2013年 | 41篇 |
2012年 | 24篇 |
2011年 | 53篇 |
2010年 | 29篇 |
2009年 | 45篇 |
2008年 | 25篇 |
2007年 | 51篇 |
2006年 | 64篇 |
2005年 | 57篇 |
2004年 | 38篇 |
2003年 | 37篇 |
2002年 | 33篇 |
2001年 | 34篇 |
2000年 | 20篇 |
1999年 | 14篇 |
1998年 | 20篇 |
1997年 | 8篇 |
1996年 | 6篇 |
1995年 | 5篇 |
1994年 | 3篇 |
1993年 | 4篇 |
1992年 | 5篇 |
1991年 | 2篇 |
1989年 | 2篇 |
1987年 | 1篇 |
1983年 | 2篇 |
1982年 | 2篇 |
1980年 | 1篇 |
1979年 | 1篇 |
1969年 | 1篇 |
排序方式: 共有732条查询结果,搜索用时 15 毫秒
51.
Driver education and graduated licensing in North America: past, present, and future 总被引:1,自引:0,他引:1
Mayhew DR 《Journal of Safety Research》2007,38(2):229-235
PROBLEM: A stated objective of driver education in North America is to produce safer drivers, typically defined as drivers less likely to crash. This paper examines the extent to which driver education has achieved this objective independently as well as the extent to which such programs can support the success of graduated licensing in reducing young driver crashes. In so doing, it discusses past experiences, recent developments, and the future direction of driver education and training in relation to graduated driver licensing. METHOD: Literature review and synthesis. RESULTS: Driver education programs have yet to demonstrate consistent attainment of their safety objectives. Moreover, they have not been found to enhance the safety effectiveness of graduated licensing programs--indeed, some practices, for example, "time discounts" for driver education have actually had a detrimental effect on teen safety. DISCUSSION: Despite its disappointing safety record to date, it is important not to abandon driver education. In particular, there are opportunities to improve driver education so that it achieves its safety objectives, and ensure that programs in the future complement graduated driver licensing and contribute to its overall safety benefits. Current and future efforts to improve driver education and better integrate it with graduated licensing programs, however, need to be rigorously evaluated to determine what does and does not work to reduce young driver crashes, and as importantly, to understand why this is the case. IMPACT ON INDUSTRY: Improved driver education integrated with graduated driver licensing has potential safety benefits. 相似文献
52.
53.
根据2019年7月国务院印发和出台的《国务院关于实施健康中国行动的意见》(国发〔2019〕13号)和《健康中国行动(2019—2030年)》提出的相应考核指标,在基本理念、基本知识和基本技能3个生态环境与健康素养一级分类指标中,当调查对象得分之和大于或等于卷面分数的70%,则认为其具备该分类生态环境与健康素养.居民整体... 相似文献
54.
55.
从健康意识逐渐提高、健康知识不断增加、健康生活方式逐步建立及健康状况有所改善等方面阐述铁路实施健康行动计划后取得的成效,分析健康维护中存在的主要问题,即专业人员不足、服务方式较单一及高血压控制率有待提高,进而提出加强专业队伍建设、引进研发新设备、强化铁路健康教育及深化“四高”联防联控等进一步开展健康维护工作的建议。 相似文献
56.
我国汽车报废回收利用体系框架初探 总被引:3,自引:1,他引:2
主要介绍了国内外废旧汽车回收处理现状,并从法制建设、回收网络构建、回收技术研究、宣传教育等方面提出了我国应对废旧汽车回收利用的对策建议。 相似文献
57.
Adi Kuntsman Imogen Rattle 《Environmental Communication: A Journal of Nature and Culture》2019,13(5):567-581
The materiality of digital communication inflicts substantial environmental damage: the extraction of resources needed to produce digital devices; the toxicity of e-waste; and the rapidly increasing energy demands required to sustain data generated by digital communication. This damage, however, is paradoxically under-theorized in scholarship on environmental sustainability. Despite the existing critique of the “techno-fix” approach in sustainability studies, digitization – and digital communication in particular – continue to be celebrated as the tool for environmental sustainability; an approach we coin “digital solutionism.” The article presents the first systematic review of the literature to map the implicit assumptions about the relationships between digital communications and environmental sustainability, in order to examine how digital solutionism manifests, and why it persists. We propose a concept matrix that identifies the key blind spots with regards to environmental damages of the digital, and call for a paradigmatic shift in environmental sustainability studies. An agenda for future research is put forward that advocates for the following: (1) a systematic account of material damages of devices, platforms and data systems adopted into sustainability research and practice, resulting in changes in both research framing and methodological foundations; (2) a reconceptualization and denaturalization of the digital itself as a promising solution; (3) a theoretical dialogue between sustainability studies and environmental communication. (4) an expansion of environmental communication as a field, from focusing on the communication aspect of environmental change to include the environmental footprint of communication itself. 相似文献
58.
从现代安全理论的角度,论述企业安全管理工作的主要内容、重点工作方面安全管理不到位可能发生的事故后果,以期达到保证企业的安全生产的目的。 相似文献
59.
生态旅游是一项具有保护自然生态与文化多样性,提高旅游者环境意识及维护当地居民生活双重责任的旅游活动,具有较强的环境教育功能。但其功能的发挥不是旅游活动的自然结果,而有赖于人的自觉和切实有效的环境教育。本研究基于对生态旅游环境教育功能及其影响因素正确认识基础上,构建生态旅游环境教育功能实现的基本框架,并系统阐述环境解说、产品设计、舆论监督、宣传教育、环境管理等途径。本研究对促进生态旅游健康发展和国民环境教育具有重要意义。 相似文献
60.
我国旅游教育发展的初步研究 总被引:1,自引:0,他引:1
我国旅游业的高速发展推动了旅游教育事业快速发展,同时也给旅游教育提出了更高的要求和挑战.在文献分析和整理的基础上,简要梳理了改革开放以来我国旅游教育发展所取得的显著成就,归纳出旅游专业教育在培养目标和模式、教学观念、课程设置、教学方法、师资力量、就业等方面存在的问题,最后提出了未来旅游教育发展的对策和建议. 相似文献