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   16240篇
  免费   546篇
  国内免费   5篇
各国政治   653篇
工人农民   719篇
世界政治   1067篇
外交国际关系   534篇
法律   10523篇
中国共产党   6篇
中国政治   153篇
政治理论   2966篇
综合类   170篇
  2020年   220篇
  2019年   268篇
  2018年   331篇
  2017年   386篇
  2016年   392篇
  2015年   291篇
  2014年   299篇
  2013年   1464篇
  2012年   444篇
  2011年   474篇
  2010年   390篇
  2009年   408篇
  2008年   493篇
  2007年   533篇
  2006年   513篇
  2005年   463篇
  2004年   454篇
  2003年   484篇
  2002年   417篇
  2001年   663篇
  2000年   538篇
  1999年   475篇
  1998年   242篇
  1997年   165篇
  1996年   200篇
  1995年   170篇
  1994年   196篇
  1993年   194篇
  1992年   321篇
  1991年   353篇
  1990年   338篇
  1989年   281篇
  1988年   319篇
  1987年   270篇
  1986年   317篇
  1985年   280篇
  1984年   229篇
  1983年   218篇
  1982年   175篇
  1981年   190篇
  1980年   127篇
  1979年   171篇
  1978年   122篇
  1977年   106篇
  1976年   96篇
  1975年   123篇
  1974年   132篇
  1973年   103篇
  1972年   100篇
  1969年   98篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
981.
The public choice literature contains little formal analysis of the bureaucratic choice of production modes — public or private — of publicly funded services. An important question to be addressed is why some governmental bodies choose to provide a publicly funded service with publicly owned and operated production units whereas other governmental bodies contract with private firms to provide the same publicly funded service. This paper is the first formal attempt to remedy this gap in the literature. We develop a theoretical explanation of the government decision maker's choice between public and private production modes based on utility maximizing behavior. We then examine empirically this choice employing logit analysis. The empirical results, which include several tests for robustness, confirm our theoretical explanation. The results are significant and suggest that non-monetary constraints are an important factor affecting this choice of production modes and that monetary constraints are less influential.  相似文献   
982.
Restricted research budgets, expanding claims for resources, and steeply escalating costs have increased the demand for methods that establish or predict the efficiency or productivity of expenditures on basic research. Irvine and Martin (I-M) have recently advocated head-to-head efficiency comparisons of research performers using publications and citations. This paper (1) criticizes the I-M approach from the perspective of economics and policy analysis; (2) illustrates the natural production function extension of the I-M approach; (3) demonstrates, by worked out examples, the feasibility of such an extension along with its pitfalls; and (4) argues that combined econometric-bibliometric modeling can be used to improve research allocations with only modest increases in agency “transaction” costs. The paper presents a prototype efficiency analysis using recent NSF data for the behavioral and neural sciences.  相似文献   
983.
Stidham  Ronald; Carp  Robert A. 《Publius》1988,18(4):113-125
This study explores regionalism in the appointment and decisionmakingpatterns of federal district judges. We begin with an examinationof the general appointment strategies of Ronald Reagan, JimmyCarter, and other recent presidents. The role of local constraintsin this process is emphasized. Next, the behavior of federaldistrict judges appointed by recent presidents is analyzed bycomparing levels of support for civil rights and civil libertiesclaims in cases decided during the 1977–1985 period. TheReagan appointees' support scores are compared with those ofjudges appointed by Carter and other recent Democratic and Republicanpresidents. Comparisons are made in the nation as a whole andalso across circuits and states. Our findings indicate thatthe Reagan appointees are less supportive of civil rights andliberties claims than judges named to the bench by Carter orother recent Democratic and Republican presidents.  相似文献   
984.
There are several important justifications for autonomous units of local government, derived from the writings of J. S. Mill and later theories concerning the value of pluralism. These arguments fail to show that local government is a morally necessary, as opposed to expedient, adjunct to liberal-democratic government. The paper develops from J. S. Mill's ideas on liberty a more substantive justification for local government based on the principle that local government can be a means for ensuring that the determination of collective decisions are made solely by those people affected by the decision.  相似文献   
985.
Thirty-two self-immolation deaths by fire, representing about 1% of suicides, occurred in the province of Ontario (population 9 million), Canada, from 1986 through 1988. The victims, mostly male (male/female ratio, 26:6), were between 21 and 71 years old (mean age, 38 years). Although the scene of self-immolation was usually familiar to the deceased, some chose remote locations. Eleven were found dead in motor vehicles. An accelerant, usually gasoline, was used in most cases. Many of these individuals had, at some time, indicated their intent to commit suicide, a few by self-immolation, but only about half had a diagnosed psychiatric illness. Most of the victims had a reason to kill themselves, but the factors that motivated them to chose self-immolation by fire were uncertain. Fourteen individuals died in hospitals from severe burn complications. The remainder were found dead at the scene. The postmortem findings of soot in the airway and elevated carbon monoxide in the blood of most of these victims [the carboxyhemoglobin (COHb) concentration was in one case less than 10%, in ten cases greater than or equal to 10 to 50%, and in seven cases greater than 50%] were helpful in determining that the individuals were not only alive at the time of the fire but also that a significant number died from smoke inhalation and carbon monoxide poisoning. The highest levels of carbon monoxide were observed in victims discovered in motor vehicles.  相似文献   
986.
987.
988.
A limited number of recent empirical studies suggest that inmates suffer from high rates of serious mental illness. Different explanations are offered depending on the type of institution: jail or prison. The literature is based largely on urban samples and does not offer comparisons of rates across types of institution within a single study. The present study examined a random sample of 213 jail and prison inmates in a rural state using the Diagnostic Interview Schedule (III-R). Among jail inmates there was little evidence of high rates of serious mental illness, suggesting the criminalization of mental illness may not be as evident in rural settings as urban areas. Among prison inmates, however, high rates of mental disorders were found, supporting previous findings in urban and rural jurisdictions. Implications of the findings are discussed in the context of a consolidated correctional system.  相似文献   
989.
990.
MARK A. COHEN 《犯罪学》1988,26(2):343-353
Previous studies of the seriousness of crime have attempted to elicit information from public surveys. This paper reports on an alternative method of ranking the severity of crime. Actual victim injury rates are combined with jury awards in personal injury accident cases to estimate pain, suffering, and fear. Crime-related death rates are combined with estimates of the value of life to arrive at monetary values for the risk of death. These estimates are combined with out-of-pocket costs (such as medical costs and lost wages) to arrive at total dollar estimates of the cost of individual crimes to victims. These dollar estimates are then used to rank the seriousness of crimes. Although these two approaches yield surprisingly similar rankings, the monetary estimates indicate that violent crimes are relatively more costly to victims than survey results might imply.  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