首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   564篇
  免费   15篇
  国内免费   29篇
管理学   73篇
民族学   9篇
人口学   29篇
丛书文集   23篇
理论方法论   47篇
综合类   227篇
社会学   102篇
统计学   98篇
  2023年   3篇
  2022年   8篇
  2021年   9篇
  2020年   11篇
  2019年   22篇
  2018年   13篇
  2017年   22篇
  2016年   16篇
  2015年   20篇
  2014年   52篇
  2013年   106篇
  2012年   23篇
  2011年   27篇
  2010年   23篇
  2009年   31篇
  2008年   33篇
  2007年   25篇
  2006年   23篇
  2005年   20篇
  2004年   16篇
  2003年   20篇
  2002年   12篇
  2001年   16篇
  2000年   8篇
  1999年   8篇
  1998年   9篇
  1997年   6篇
  1996年   6篇
  1995年   3篇
  1994年   5篇
  1993年   3篇
  1992年   1篇
  1991年   3篇
  1989年   1篇
  1987年   2篇
  1986年   1篇
  1982年   1篇
排序方式: 共有608条查询结果,搜索用时 562 毫秒
51.
分子生物学的崛起改变了神经科学研究的进程。本文回顾了神经分子生物学40年的发展里程,分析了脑的1O年工程研究和焦点。展望了未来30年该领域发展趋势。  相似文献   
52.
Emerging infectious diseases are characterized by complex interactions among disease agents, vectors, wildlife, humans, and the environment. Since the appearance of West Nile virus (WNV) in New York City in 1999, it has infected over 8,000 people in the United States, resulting in several hundred deaths in 46 contiguous states. The virus is transmitted by mosquitoes and maintained in various bird reservoir hosts. Its unexpected introduction, high morbidity, and rapid spread have left public health agencies facing severe time constraints in a theory-poor environment, dependent largely on observational data collected by independent survey efforts and much uncertainty. Current knowledge may be expressed as a priori constraints on models learned from data. Accordingly, we applied a Bayesian probabilistic relational approach to generate spatially and temporally linked models from heterogeneous data sources. Using data collected from multiple independent sources in Maryland, we discovered the integrated context in which infected birds are plausible indicators for positive mosquito pools and human cases for 2001 and 2002.  相似文献   
53.
古代湖南除水、旱两大自然灾害外,主要的灾种还有虫灾、风灾、雹灾、冰冻、地震和疫灾,都对社会产生了不同程度的影响和破坏。  相似文献   
54.
Minamata Disease and Environmental Governance   总被引:2,自引:0,他引:2  
Abstract: This article aims to clarify the conditions necessary for environmental governance through a case study of one of the most tragic examples of environmental destruction, the Minamata disease. The Minamata disease is methyl‐mercury poisoning resulting from the ingestion of contaminated fish and shellfish. The first incident of the Minamata disease occurred in the mid‐1950s, in Kumamoto Prefecture. In spite of the grave lesson that the pollution in Kumamoto provided, Japanese society went on to experience a second occurrence of Minamata disease in the mid‐1960s, in Niigata Prefecture. Conflicts between victims, the companies responsible for contamination, and the central and prefectural governments have continued for the past 50 years. As a whole, the history of the two incidences of Minamata disease shows a lack of environmental governance in Japanese society. Effective environmental governance is the ability to produce adequate solutions to a variety of environmental problems. In order to resolve an environmental problem such as Minamata disease adequately, four tasks must be achieved. These are the discovery of the cause, the prevention of suffering, recovery from suffering and the learning of a lesson. What factors are crucial to the achievement of these tasks? Through an analysis of the history of Minamata disease, I would like to point out three fundamental factors that have a decisive influence on the solution of an environmental problem. They are the existence of an effective and just juridical system, a mature public sphere, and the quality of individual actors who are concerned with an environmental problem. The following conditions are important to the fostering of environmental governance on a more concrete level: sensitivity of the society and the ability to set an agenda, autonomy of the research process and of any research groups, organization of the antipollution movement, an adequately designed system for compensation, and various measures which help to counter socially amplified suffering.  相似文献   
55.
马一浮功夫论初探   总被引:3,自引:0,他引:3  
马一浮在朱子学的基础上,针对时代病痛,提出读书、穷理、涵养的道德修养功夫。这不仅是一种独创的理论思考,更是他一生道德实践的真实体现。它为儒学的重建指出一个新的向度。  相似文献   
56.
《道德经》的心理调治方法初探   总被引:1,自引:0,他引:1  
<道德经>中的修身养性思想,从心理调治的角度看,可归纳为返朴归真法、层层超越法、忘我静修法.返朴归真法是通过解除外界时自我本性的异化、恢复自我的真朴本性来调治行为主体的心理问题或心理疾病;层层超越法是运用<道德经>中的辩证法思想去超越万事万物,以一种"无执"的心境来调治行为主体的心理问题或心理疾病;忘我静修法是通过淡化、自我意识来调治行为主体的心理问题或心理疾病.  相似文献   
57.
Foot-and-mouth disease (FMD) is a viral disease of domesticated and wild cloven-hoofed animals. FMD virus is known to spread by direct contact between infected and susceptible animals, by animal products such as meat and milk, by the airborne route, and mechanical transfer on people, wild animals, birds, and by vehicles. During the outbreak of 2001 in the Netherlands, milk from dairy cattle was illegally discharged into the sewerage as a consequence of transport prohibition. This may lead to contaminated discharges of biologically treated and raw sewage in surface water that is given to cattle to drink. The objective of the present study was to assess the probability of infecting dairy cows that were drinking FMD virus contaminated surface water due to illegal discharges of contaminated milk. So, the following data were collected from literature: FMD virus inactivation in aqueous environments, FMD virus concentrations in milk, dilution in sewage water, virus removal by sewage treatment, dilution in surface water, water consumption of cows, size of a herd in a meadow, and dose-response data for ingested FMD virus by cattle. In the case of 1.6 x 10(2) FMD virus per milliliter in milk and discharge of treated sewage in surface water, the probability of infecting a herd of cows was estimated to be 3.3 x 10(-7) to 8.5 x 10(-5), dependent on dilution in the receiving surface water. In the case of discharge of raw sewage, all probabilities of infection were 100 times higher. In the case of little dilution in small rivers, the high level of 8.5 x 10(-3) is reached. For 10(4) times higher FMD virus concentrations in milk, the probabilities of infecting a herd of cows are high in the case of discharge of treated sewage (3.3 x 10(-3) to 5.7 x 10(-1)) and very high in the case of discharge of raw sewage (0.28-1.0). It can be concluded that illegal and uncontrolled discharges of contaminated milk into the sewerage system may lead to high risks to other cattle farms at 6-50 km distance of the location of discharge within one day. This clearly underlines current measures that prohibit such discharges, and also asks for strict control. This risk assessment clearly demonstrated the potential significance of FMD virus transmission via water, and the results will be useful on an international scale, and could also serve as a basis for other FMD risk-assessment models.  相似文献   
58.
The effect of information on health risk valuations   总被引:1,自引:1,他引:0  
This article examines the effect of familiarity with chronic lung disease on people's willingness to pay to reduce their risk of contracting chronic bronchitis, and on their willingness to increase their risk of auto death to reduce chronic bronchitis risk. We find that persons who have a relative with chronic lung disease are willing to give up more income to reduce their risk of chronic bronchitis than persons with no first-hand knowledge of the disease; however, their willingness to increase their risk of auto death to reduce their risk of chronic bronchitis is no different, on average, than persons with no first-hand knowledge of lung disease. This suggests that responses to risk-risk tradeoffs may be more stable than responses to risk-income choices.This research was sponsored by Resources for the Future and by the U.S. Environmental Protection Agency, Office of Policy Planning and Evaluation, Alan Carlin and Joel Scheraga, project officers. We thank Robert Mitchell for his help in conducting focus groups, and Caroline Harnett and Sari Radin for research assistance. Stan Presser, Sue Dowden, and Tim Triplett of the University of Maryland's Survey Research Center administered the survey. We especially thank Stan Presser for his suggestion that we sample relatives of people with chronic lung disease. We also thank Kip Viscusi, Wes Magat, and Joel Huber for making available their computer programs and data, and Ajay Kalra for programming help. Paul Portney and John Mullahy provided useful comments on an earlier draff of the article, as did two referees.  相似文献   
59.
Female assembly workers reporting constant neck and shoulder pain, despite ergonomically acceptable working conditions, were interviewed. As a starting point in the interviews, the patients were asked to describe their general situation at work. Their reports were fed back and discussed with company management in a wider group meeting and resulted in an improvement in their attitudes to those workers. A climate of confidence and well-being was created, which the women experienced as genuine. The workers' report of pains improved dramatically and absence due to musculoskeletal disorders was reduced by more than 90% during the following year.  相似文献   
60.
目的:分析2013年东台市新农合住院患者疾病构成,为进一步提升新农合政策实效与医院临床管理提供决策依据。方法:对东台市2013年参保新农合住院患者疾病按照国际疾病标准(ICD-10)进行分类汇总,并对前五位疾病构成分性别、年龄组进行顺位对比分析。结果:全年新农合患者共计84958例,循环系统疾病、呼吸系统疾病、消化系统疾病、肿瘤和损伤、中毒和外因的某些其他后果疾病为该市主要疾病构成。结论:加强医疗服务和医院管理工作,提高医院医疗诊断、治疗、服务水平,促进新农合政策有效实施。  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号