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   1738篇
  免费   62篇
  2020年   23篇
  2019年   37篇
  2018年   51篇
  2017年   63篇
  2016年   65篇
  2015年   36篇
  2014年   45篇
  2013年   483篇
  2012年   44篇
  2011年   55篇
  2010年   49篇
  2009年   52篇
  2008年   49篇
  2007年   25篇
  2006年   37篇
  2005年   40篇
  2004年   37篇
  2003年   33篇
  2002年   32篇
  2001年   29篇
  2000年   29篇
  1999年   15篇
  1998年   30篇
  1997年   25篇
  1996年   19篇
  1995年   16篇
  1994年   23篇
  1993年   17篇
  1992年   12篇
  1991年   13篇
  1990年   14篇
  1988年   12篇
  1987年   16篇
  1986年   19篇
  1985年   16篇
  1984年   25篇
  1983年   20篇
  1982年   23篇
  1981年   11篇
  1980年   15篇
  1979年   17篇
  1978年   8篇
  1977年   18篇
  1976年   14篇
  1975年   11篇
  1974年   11篇
  1973年   7篇
  1972年   8篇
  1970年   7篇
  1968年   7篇
排序方式: 共有1800条查询结果,搜索用时 15 毫秒
951.
ABSTRACT.  Firms offer compensation not only through wages, but also offer transport-related fringe benefits such as transport benefits (company cars, travel, and parking benefits) and relocation benefits to job applicants. We argue that these benefits are not randomly offered to employees, but depend on the job applicants' commuting costs. The firms' choice between these benefits affects the workers' incentive to move their residence closer to the workplace. Using information on firms' recruitment behavior in the United Kingdom, this paper shows empirically that the applicants' journey-to-work time induces firms to offer these benefits to job applicants. The implications of transport-related fringe benefits for commuting and relocation are found to be rather distinct. Transport benefits make employees less sensitive to the costs of commuting, whereas relocation benefits induce employees to move closer to the workplace.  相似文献   
952.
Abstrakt Das Thema Regionalisierung der Verwaltung wird seit der Gebietsreform in den sechziger Jahren in Wissenschaft, Politik und Praxis debattiert. W?hrend es für die st?dtischen Verdichtungsr?ume immer wieder zu sehr unterschiedlichen Einzell?sungen gekommen ist – zu denken w?re etwa an den Stadtverband Saarbrücken, den Planungsverband Ballungsraum Frankfurt/Rhein-Main, den Verband Region Stuttgart oder die Region Hannover –, schien die fl?chendeckende Regionalisierung der Verwaltung in einem Land kaum durchsetzbar. Nun geht ausgerechnet das am dünnsten besiedelte Land Mecklenburg-Vorpommern diesen Weg: Die zw?lf Landkreise und die sechs kreisfreien St?dte werden durch fünf Regionalkreise ersetzt.  相似文献   
953.
954.
955.
Support for the "democratization of the policy sciences" has led to the development of a number of frameworks and theories to enhance the normative, multidisciplinary approach to policy analysis. However, this approach has been challenged for failing to produce the objective empirical and normative standards implied by its scientific aspirations. One consideration that has been advanced under a variety of rubrics is "participatory policy analysis." This is a methodological proposal that expands the range of actors/stakeholders involved in the making and execution of public policy in a discursive or deliberative mode. While much of the research on policy networks is focused on the management and coordination of such networks (i.e., collaborative management), there is little attention on analysis of networks as a participatory policy analytical approach. We propose a theory of "collaborative policy networks" that examines not only the stakeholder composition of a group or the partnerships between any two stakeholders but also the way these stakeholders are embedded in various degrees of institutionalized structure and the discursive tendencies of exchange among them that leads to policy initiative, implementation, evaluation, and possibly termination. Collaborative policy networks are characterized by discursive properties, specifically reciprocity, representation, equality, participatory decision making, and collaborative leadership. We suggest that the results of such research can identify structural signatures of collaborative policy networks that serve as "stamps" of the common nature of such networks that, if fostered, can inform and improve the attempt of networks of partners to achieve policy goals.  相似文献   
956.
The timing of the introduction, proliferation and decline of backed artefacts in Australia has been much debated. In south-eastern Australia, after initially appearing at least 8500 years ago, backed artefacts greatly increased in number between 4000 and 3500 years ago to the extent that they are found in numerous sites and are recorded in large numbers in individual sites from that time. From about 1500 years ago they declined markedly in number and had seemingly disappeared by the time of British colonization. Models explaining their proliferation advance the proposition that increased backed artefact production was triggered by heightened foraging risk and/or social re-organisation brought about by a change in climate to a regime which was cooler and drier than any other time during the Holocene combined with intensified ENSO climatic conditions. Our study develops this hypothesis by inferring the use of backed artefacts at Mussel Shelter in the Sydney Basin through an integrated use-wear and residue analysis. These inferences provide new insights into the nature of the evolutionary changes in tool production and use in response to the period of altered climatic conditions.  相似文献   
957.
This paper presents a case study aimed at correlating archaeological ‘events’ (obtained from radiocarbon measurements and dendrochronology) from the site of Sutton Common with a radiocarbon-dated pollen sequence obtained from a palaeochannel deposit adjacent to the area of the main archaeological activity. It demonstrates the use of a Bayesian approach to quantifying whether the timing of palynological ‘events’ interpreted as reflecting anthropogenic impacts are likely to be associated with archaeological ‘events’. The results suggest that Bronze Age activity in the form of a mortuary enclosure and associated cremation burials are probably not contemporary with the palynological evidence for disturbance to the oak–hazel woodland in this period. Subsequent evidence for local woodland clearance and agriculture is estimated to precede the construction of the large Iron Age enclosure in 372 BC, with increases in ‘anthropogenic indicators’ following this ‘event’. The construction of the site does not appear to have had a pronounced impact on the local vegetation, with hazel the only woody taxon to show clear reductions. Despite the use of a substantial number of oak timbers in the enclosure palisade, percentages of oak remain remarkably stable. Later farming activity on the site probably post-dates the end of activity in the enclosures. The value of the methodology is discussed in relation to quantifiable and robust correlations of archaeological and palaeoenvironmental narratives of landscape and human activity.  相似文献   
958.
959.
Cross-cultural approaches have been used widely in archaeological research. Comparative ethnology has provided a number of archaeological indicators of behavior, but large segments of the archaeological record have not yet been subjected to extensive comparative analysis. Comparative archaeology has aided in exploring variation among societal types (such as chiefdoms) and categories within the archaeological record (such as settlements). Diachronic comparisons have been used frequently by archaeologists, but these have often been based on unique samples and only rarely have employed statistics to aid in the discovery or testing of hypotheses. Archaeoethnology, comparative analyses of archaeological cases employing valid samples and statistical evaluation of theories and hypotheses, is introduced.  相似文献   
960.
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