全文获取类型
收费全文 | 485篇 |
免费 | 22篇 |
专业分类
各国政治 | 16篇 |
工人农民 | 26篇 |
世界政治 | 24篇 |
外交国际关系 | 32篇 |
法律 | 249篇 |
中国政治 | 4篇 |
政治理论 | 155篇 |
综合类 | 1篇 |
出版年
2022年 | 4篇 |
2021年 | 4篇 |
2020年 | 14篇 |
2019年 | 16篇 |
2018年 | 14篇 |
2017年 | 20篇 |
2016年 | 18篇 |
2015年 | 6篇 |
2014年 | 18篇 |
2013年 | 69篇 |
2012年 | 6篇 |
2011年 | 16篇 |
2010年 | 12篇 |
2009年 | 11篇 |
2008年 | 17篇 |
2007年 | 20篇 |
2006年 | 24篇 |
2005年 | 15篇 |
2004年 | 22篇 |
2003年 | 10篇 |
2002年 | 11篇 |
2001年 | 16篇 |
2000年 | 10篇 |
1999年 | 12篇 |
1998年 | 10篇 |
1997年 | 10篇 |
1996年 | 5篇 |
1995年 | 6篇 |
1994年 | 11篇 |
1993年 | 4篇 |
1992年 | 4篇 |
1991年 | 4篇 |
1990年 | 2篇 |
1989年 | 2篇 |
1988年 | 5篇 |
1987年 | 4篇 |
1986年 | 6篇 |
1985年 | 6篇 |
1984年 | 8篇 |
1983年 | 3篇 |
1982年 | 6篇 |
1981年 | 4篇 |
1980年 | 3篇 |
1979年 | 5篇 |
1975年 | 2篇 |
1973年 | 4篇 |
1971年 | 1篇 |
1969年 | 1篇 |
1968年 | 1篇 |
1967年 | 1篇 |
排序方式: 共有507条查询结果,搜索用时 15 毫秒
131.
Collins PJ Hennessy LK Leibelt CS Roby RK Reeder DJ Foxall PA 《Journal of forensic sciences》2004,49(6):1265-1277
Analysis of length polymorphism at short tandem repeat (STR) loci utilizing the polymerase chain reaction (PCR) process has proven to be an ideal assay for human identification purposes. The short length of STR loci coupled with the amplification of target sequence through PCR allows for a robust, sensitive, and specific assay for highly polymorphic markers. A multiplex containing fifteen STR loci plus the gender-determining locus Amelogenin was developed to provide a single amplification/detection of all CODIS (Combined DNA Index System) STR loci (CSF1PO, D3S1358, D5S818, D7S820, D8S1179, D13S317, D16S539, D18S51, D21S11, FGA, TH01, TPOX, and vWA) as well as two internationally-accepted STRs (D2S1338 and D19S433). By incorporating five-dye fragment analysis technology and non-nucleotide linkers, previously optimized AmpFlSTR kit primer sequences have been maintained. This kit has been developed in accordance with the standards of the forensic community as defined by the DNA Advisory Board. Validation studies were performed to include developmental validation, and the results support the use of the AmpFlSTR Identifiler PCR Amplification Kit for human identity and parentage testing. 相似文献
132.
States as Policy Laboratories: Emulating Success in the Children's Health Insurance Program 总被引:1,自引:0,他引:1
Craig Volden 《American journal of political science》2006,50(2):294-312
This article illustrates the use of the directed dyad-year event history analysis to study policy diffusion, with an application to policy changes in the Children's Health Insurance Program from 1998 to 2001. This analysis reveals strong evidence that states with successful policies are more likely to be emulated than are those with failing policies. Evidence of success is especially relevant for policy changes that lower program costs rather than those raising costs, and for changes made by legislatures rather than by administrative agencies. Moreover, this study reveals policy diffusion based on political, demographic, and budgetary similarities across states, rather than simply geographic proximity. 相似文献
133.
Local governments in Australia are constantly seeking to raise additional revenue to fund higher service demands. One key revenue source is service fees and charges, including fines. Premised on the notion of user pays, service fees and charges represent a significant proportion of total revenue for many local governments, especially in New South Wales, Queensland and Tasmania. This exploratory essay addresses a number of key issues related to this revenue source in order to stimulate discussion and debate on matters which are presently under‐examined in the literature. The article examines the philosophy underpinning price setting, the identification of the principles of price setting, the adoption of applicable price setting models, the need to adhere to National Competition Policy and also the applicability of differential pricing of service delivery within local government. Calls for more open approaches and enhanced disclosure relating to service provision and pricing are made. 相似文献
134.
R. Kenneth Godwin Suzanne M. Leland Andrew D. Baxter Stephanie Southworth 《政策研究评论》2006,23(5):983-997
Public school choice is a widely used tool for education reform and may be a way to improve school accountability and efficiency. This article examines what happened to student outcomes when Charlotte‐Mecklenburg Schools, a large and diverse urban school district located in North Carolina, changed its assignment policy to one of open enrollment with mandatory choice. The previous policy used a broad array of magnet schools and a limited amount of mandatory busing to achieve desegregation. The new policy required that all students choose a school, and it specifically avoided using race or ethnicity considerations in assigning students. The article examines the impacts of the new policy on the end‐of‐grade standardized tests in reading and math. The article uses regression analysis to discover whether the scores of various groups of students increased or decreased after the policy change. The analysis suggests that the “race‐neutral” assignment policy was neither neutral in the opportunity it provided students to attend their school of choice nor in its academic outcomes. Anglo students were more likely to receive their first choice of schools and to improve their scores. African American students were less likely to receive their first choice school and their scores declined. 相似文献
135.
136.
This study investigated the influence of question format on preschool-aged children's errors, their response accuracy, and their tendency to say I don't know when given non-misleading questions in a neutral, unbiased context. Children (3 to 5 years old) participated in a craft-making session that included a staged accident with two experimenters differing in gender and appearance; the environment also had several distinctive features. One week later children were interviewed about actions, participants, and environment; questions were yes/no format with the veridical response yes (yes questions), yes/no format with the veridical response no (no questions), and specific wh- format questions. Question format substantially influenced children's responses: they were most likely to make errors if asked no questions, and were unlikely to answer either yes/no question with I don't know. In contrast, children spontaneously and frequently said I don't know to wh- questions about content they did not recall (environment), but not about content that was well recalled (actions). Implications of question format for reliability of eyewitness testimony by preschoolers are discussed. 相似文献
137.
The current study examined the moderating effect of impulsivity on the relation between anger and adolescent problem behavior (substance use and delinquency). High levels of anger were associated with delinquency for impulsive, but not for nonimpulsive adolescents in cross-sectional analyses. This moderating effect was not supported for substance use. Gender-moderated links between temperament and problem behavior showed that anger predicted substance use for females only, and impulsivity was more strongly associated with delinquency for males. In prospective analyses, both anger and impulsivity predicted adolescent problem behavior, but impulsivity did not moderate the effects of anger. Overall, results provided partial support for the notion that temperament dimensions operate interactively to promote poor adjustment. 相似文献
138.
139.
Dr. Craig Winston LeCroy 《Journal of youth and adolescence》1986,15(6):497-508
This study investigated the ways in which the gender of group leader and client might affect treatment outcome with young adolescents. Seventh- and eighth-grade students were involved in programs for enhancing social competence. Mixed-sex groups of adolescents received treatment from either male or female group leaders. Results revealed gender differences between the male and female adolescents on the outcome measures, no difference on outcome due to leader gender, and one interaction effect on a measure of social skills between adolescent gender and group leader gender. Acquisition of social skills, which takes place through modeling and observation, may be influenced by matched gender between leaders and adolescents; however, other competencies and abilities do not appear sensitive to leader and adolescent gender.He received his Ph.D. at the University of Wisconsin-Madison. His major interests include developing and evaluating interventions for adolescents, social skills training, and practice evaluation for social workers. 相似文献
140.
Alison Craig 《政策研究评论》1986,6(2):366-373
The aim of environmental monitoring programs is to provide information useful in enforcing existing environmental statutes and helping to detect and prevent future problems. Despite the considerable number of monitoring programs being conducted, information on the quality of the nation's environment remains poor and of little use in supporting environmental policymaking. This paper examines the role evaluation has played in developing an effective nationwide environmental monitoring system. Background information on environmental monitoring programs is provided, followed by a discussion of the evaluations of past programs and recommendations made for improvement. One program in particular, the "Status and Trends" program administered by the National Oceanic and ATmospheric Administration, is examined to explore whether environmental monitoring demonstrates a case of learning through evaluation. "Status and Trends" is based on the experience gained during several of the previous monitoring programs and incorporates many of the recommendations spawned from earlier environmental programs. Whether the program demonstrates a case of learning through evaluation will depend on the ability of the program to evolve as we learn more about environmental quality and out ability to measure it. 相似文献