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   894篇
  免费   31篇
各国政治   29篇
工人农民   45篇
世界政治   68篇
外交国际关系   41篇
法律   477篇
中国政治   17篇
政治理论   247篇
综合类   1篇
  2023年   6篇
  2022年   5篇
  2021年   8篇
  2020年   19篇
  2019年   21篇
  2018年   31篇
  2017年   36篇
  2016年   34篇
  2015年   21篇
  2014年   27篇
  2013年   115篇
  2012年   27篇
  2011年   34篇
  2010年   19篇
  2009年   22篇
  2008年   25篇
  2007年   20篇
  2006年   36篇
  2005年   30篇
  2004年   23篇
  2003年   29篇
  2002年   24篇
  2001年   12篇
  2000年   16篇
  1999年   6篇
  1998年   16篇
  1997年   15篇
  1996年   7篇
  1995年   13篇
  1994年   13篇
  1993年   16篇
  1992年   14篇
  1991年   6篇
  1990年   14篇
  1989年   16篇
  1988年   16篇
  1987年   16篇
  1986年   7篇
  1985年   11篇
  1984年   10篇
  1983年   7篇
  1981年   9篇
  1980年   6篇
  1977年   6篇
  1976年   6篇
  1974年   4篇
  1973年   9篇
  1969年   6篇
  1967年   4篇
  1965年   7篇
排序方式: 共有925条查询结果,搜索用时 15 毫秒
141.
While in recent years new charters and government actions have boosted the collective and individual rights enjoyed by “Fourth-World” indigenous peoples such as the Inuit, another set of indigenous peoples has not experienced such protection: “self-delimiting” peoples. Their rights go largely unprotected because of deliberate ambiguities in the word “indigenous”; because these peoples generally avoid all contact with the larger society, and so are unknown by it and have no voice in it; and because charters and institutions generally require validation of an indigenous people as bona fide—such as a history of contact and of evident land occupation—in order for the group to enjoy full rights protections. Both practice and theory may militate against the extension of full protection. This paper argues that theory, institutions building upon it, and practice realizable from theory and institutions must be reconsidered in terms of the particular circumstances and needs of these peoples if their rights are to be fully respected and maintained. Clear, special protection for these peoples’ rights to their culture must be established.  相似文献   
142.
143.
Although juvenile drug courts (JDCs) have now been in operation for 17 years, there is still no definitive appraisal as to this model's cost effectiveness and in particular, no detailed cost analysis of a JDC program following the 16 strategies until this one. The cost data presented in this paper build on the process and outcome evaluations performed on the Clackamas County Juvenile Drug Court (CCJDC). The criminal justice costs incurred by participants in drug court are compared with the costs incurred by eligible non‐participants. CCJDC participants had far more positive outcomes than those who did not participate in the program. In the two years after drug court entry, CCJDC participants cost the taxpayers $961 less per participant than similar individuals who did not attend the drug court program.  相似文献   
144.
Sample survey data show few Bolivian small‐farm households using credit, but most would like to borrow from formal market institutions. A theoretical framework is developed to formulate testable hypotheses to identify factors that inhibit credit use. Major impediments to borrowing are scale of operations, as measured by amount of useable land, and borrower's transactions costs that arise from loan paperwork, use of Indian language, remoteness from market, little education and low degree of market integration. When farmers with these characteristics borrow they tend to use informal market sources because of the lower transactions costs compared to those of formal market lenders. The policy implication is if formal market lenders are to reach more farmers they must lower transactions costs.  相似文献   
145.
User charge is an alternative option to privatizing public service provision. But its use as a policy instrument, compared with that of asset sales or contracting out, for instance, is less researched and documented. This paper tries to fill the gap. By contrasting the experiences of employing user charge for two public services in Hong Kong with diametrically opposing results, this paper offers preliminary conclusions on several lessons, which governments, in their drive toward improved efficiency, can learn in commercializing their trading activities. Implications to public policy making are also suggested. These include: the user-pays principle has to be applied equitably, the public service market has to remain depoliticized, the management has to be transformed to behave more entrepreneurially, and the users have to be educated.  相似文献   
146.
Lifting bob Woodward's veil

Bob Woodward : VEIL : The Secret Wars of the CIA 1981–1987 Simon &; Schuster, New York, 1987, 543 p., $21.95.

His “Cover” Is Undercover

Steve Posner: Israel Undercover: Secret Warfare &; Hidden Diplomacy in the Middle East Syracuse University Press, Syracuse, N.Y., 1987, 350 p., $17.95.

Democracy and Intelligence: An Uneasy Compatibility

Stephen J. Cimbala, ed.: Intelligence and Intelligence Policy in a Democratic Society Transnational Publishers, Dobbs Ferry, N.Y., 262 p., $37.50.

A Much‐Needed Primer

Herbert E. Meyer: R eal‐ World In teltigence. Weidenfeld &; Nicolson, New York, 1987, 102 p., $14.95.

Agee Finds Two Friends

Jonathan Bloch and Patrick Fitzgerald (introduction by Philip Agee): British Intelligence and Covert Action Brandon Book Publishers Ltd., Kerry, Ireland, 1983, 284 p., PB, $9.95.

Questionable Secrets‐Questionable Sources

Fabrizio Calviand Olivier Schmidt: Intelligences secretesAnnales de l'espionnage Hachette, Paris, 1988, 309 p., 148 Fr. fr.

Scaling the Wall

Vladimir Solovyov and Elena Klepikova: Behind the High Kremlin Walls Dodd, Mead, New York, 1986, 248 p., $17.95.

The USSR As a Counterintelligence State

John J. Dziak: Chekisty: A History of the KGB Heath/Lexington Books, Lexington, Mass., 1988, 234 p., $17.95.  相似文献   
147.
148.
The theory of action upon which high‐stakes accountability policies are based calls for systemic reforms in educational systems that will emerge by pairing incentives for improvement with extensive and targeted technical assistance (TA) to build the capacity of low‐performing schools and districts. To this end, a little discussed and often overlooked aspect of the No Child Left Behind Act (NCLB) mandated that, in addition to sanctions, states were required to provide TA to build the capacity of struggling schools and Local Education Agencies (LEAs, or districts) to help them improve student achievement. Although every state in the country provides some form of TA to its lowest performing districts, we know little about the content of these programs or about their efficacy in improving student performance. In this paper, we use both quantitative and qualitative analyses to explore the actions taken by TA providers in one state—California—and examine whether the TA and support tied to California's NCLB sanctions succeeds in improving student achievement. Like many other states, California requires that districts labeled as persistently failing under NCLB (in Program Improvement year 3, PI3) work with external experts to help them build the capacity to make reforms that will improve student achievement. California's lowest performing PI3 districts are given substantial amounts of funding and are required to contract with state‐approved District Assistance and Intervention Teams (DAITs), whereas the remaining PI3 districts receive less funding and are asked to access less intensive TA from non‐DAIT providers. We use a five‐year panel difference‐in‐difference design to estimate the impacts of DAITs on student performance on the math and English language arts (ELA) standardized tests relative to non‐DAIT TA during the two years of the program intervention. We find that students in districts with DAITs perform significantly better on math California Standards Tests (CSTs) averaged over both treatment years and in each of the first and second years. We do not find evidence that students in districts with DAITs perform higher on ELA CSTs over the combined two years of treatment, although we find suggestive evidence that ELA performance increases in the second year of treatment relative to students in districts with non‐DAIT TA. Ordinary least squares (OLS) regressions that explore the association between specific activities fostered by DAITs and changes in districts’ gains in achievement over the two years of treatment show that DAIT districts that report increasing their focus on using data to guide instruction, shifting district culture to generate and maintain high expectations of students and staff, and increasing within‐district accountability for student performance, have higher math achievement gains over the course of the DAIT treatment. In addition, DAIT districts that increase their focus on ELA instruction and shift district culture to one of high expectations have higher ELA achievement gains than do DAIT districts that do not have a similar focus. © 2012 by the Association for Public Policy Analysis and Management.  相似文献   
149.
Because gamma-hydroxybutyrate (GHB) is an endogenous substance present in the body and is rapidly eliminated after ingestion, toxicologists investigating drug-facilitated sexual assault cases are often asked to differentiate between endogenous and exogenous levels of GHB in urine samples.This study was designed to determine the effects of storage temperature on endogenous GHB levels in urine. Specifically, it was designed to ascertain whether endogenous levels can be elevated to a range considered indicative of GHB ingestion.Urine specimens from two subjects that had not been administered exogenous GHB were collected during a 24h period and individually pooled. The pooled specimens were separated into standard sample cups and divided into three storage groups: room temperature ( approximately 25 degrees C), refrigerated (5 degrees C), and frozen (-10 degrees C). Additionally, some specimens were put through numerous freeze/thaw cycles to mimic situations that may occur if multiple laboratories analyze the same specimen. Periodic analysis of the samples revealed increases in the levels of endogenous GHB over a 6-month period. The greatest increase (up to 404%) was observed in the samples maintained at room temperature. The refrigerated specimens showed increases of 140-208%, while the frozen specimens showed smaller changes (88-116%). The specimens subjected to multiple freeze/thaw cycles mirrored specimens that had been thawed only once. None of the stored urine specimens demonstrated increases in GHB concentrations that would be consistent with exogenous GHB ingestion.  相似文献   
150.
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