全文获取类型
收费全文 | 5801篇 |
免费 | 215篇 |
专业分类
各国政治 | 289篇 |
工人农民 | 222篇 |
世界政治 | 446篇 |
外交国际关系 | 254篇 |
法律 | 3442篇 |
中国共产党 | 1篇 |
中国政治 | 31篇 |
政治理论 | 1291篇 |
综合类 | 40篇 |
出版年
2020年 | 88篇 |
2019年 | 102篇 |
2018年 | 119篇 |
2017年 | 156篇 |
2016年 | 163篇 |
2015年 | 129篇 |
2014年 | 123篇 |
2013年 | 639篇 |
2012年 | 163篇 |
2011年 | 170篇 |
2010年 | 143篇 |
2009年 | 143篇 |
2008年 | 169篇 |
2007年 | 155篇 |
2006年 | 159篇 |
2005年 | 161篇 |
2004年 | 168篇 |
2003年 | 157篇 |
2002年 | 139篇 |
2001年 | 197篇 |
2000年 | 196篇 |
1999年 | 144篇 |
1998年 | 84篇 |
1997年 | 67篇 |
1996年 | 52篇 |
1995年 | 64篇 |
1994年 | 57篇 |
1993年 | 63篇 |
1992年 | 99篇 |
1991年 | 102篇 |
1990年 | 119篇 |
1989年 | 97篇 |
1988年 | 89篇 |
1987年 | 91篇 |
1986年 | 106篇 |
1985年 | 120篇 |
1984年 | 81篇 |
1983年 | 87篇 |
1982年 | 56篇 |
1981年 | 50篇 |
1980年 | 49篇 |
1979年 | 51篇 |
1978年 | 58篇 |
1976年 | 37篇 |
1975年 | 51篇 |
1974年 | 65篇 |
1973年 | 55篇 |
1972年 | 45篇 |
1970年 | 36篇 |
1969年 | 42篇 |
排序方式: 共有6016条查询结果,搜索用时 15 毫秒
171.
Merrian J. Brooks DO MS Joshua Leskovac MS Mark F. Benedetto MS Elizabeth Miller MD PhD Edward P. Mulvey PhD 《Juvenile & family court journal》2020,71(4):53-62
Motivational interviewing (MI) is a communication style focused on enhancing clients’ own motivation towards change. In the justice system MI has evidence to support that it enhances communication and change behaviors in youth. As most MI training is designed for healthcare settings training and implementation of MI must be adapted to fit the juvenile justice model. This includes both rehabilitation and restorative justice. Here we describe the details that allowed one county small county in Pennsylvania to roll out MI training and initial skills review in less than 6 months. The case reviews the details of planning, trainings, and timing of activities. We then discuss what elements of those details fit into a greater implementation plan that may be applied elsewhere. Four key elements were instrumental to implementation: 1) appreciation of JPO time constraints, 2) cost containment 3) using blending to enhance JPO flexibility with MI use, and 4) policies that normalize use of MI. This outline may assist other courts in their own implementation efforts. 相似文献
172.
Selena McKay-Davis M.F.S. Tharinia Robinson Ph.D. Ismail M. Sebetan M.D. Ph.D. Paul Stein Ph.D. 《Journal of forensic sciences》2020,65(6):2065-2070
Forensic Technicians provide crime scene investigation services and are exposed to stressful violent crimes, motor vehicle accidents, biological or chemical hazards, and other appalling imagery. Forensic Technicians would likely experience physical and psychological stress after exposure to trauma, and security vulnerabilities similar to Sworn Police Officers. The perceived availability of mental health resources, job-related physical, psychological stress, and traumatic experiences of both Forensic Technicians and Sworn Police Officers from California law enforcement agencies were investigated using a self-reported survey. Responses were evaluated for any significant differences in the perceived stress, job-related physical stress, and resulting psychological impact affecting the participants. The survey contained a mix of True/False, Circle/Check the Appropriate Box, or Likert Scale (1–5) responses. The results were evaluated statistically and discussed. Results indicated Sworn Police Officers and Forensic Technicians have different on-duty stress levels, but similar off-duty stress levels. Nearly two-thirds of 54 job-related stressors were not significantly different between the two occupations. However, Forensic Technicians reported more adverse effects in 17 physical and psychological job-related activities compared with Sworn Police Officers. Forensic Technicians reported lower awareness levels and availability of agency mental health support services than were reported by Sworn Police Officers. This study reports for the first time an unexpected outcome that perceived and job-related psychological stress is greater for Forensic Technicians than Sworn Police Officers. Possible reasons for this disparity will be discussed as well as stress management tools that should be implemented to reduce health risk factors for both career professionals as well as increase public safety. 相似文献
173.
Research indicates that voters are not particularly effective at removing corrupt politicians from office, in part because voters make decisions on the basis of many competing factors. Party leaders are much more single-minded than voters and will choose to deselect implicated legislators if it means maintaining a positive party reputation and improving the odds of winning a legislative majority. We examine renominations to Italy’s legislature in two periods marked by corruption. We compare these renomination patterns with those from the prior legislature, when corruption lacked political salience. Our analysis shows that incumbent renominations are negatively associated with the number of press mentions that link the incumbent to corruption—but only when corruption is salient to the public. Our study highlights the importance of party leaders in forcing malfeasant legislators out of office—and reducing corruption—and redirects attention from voters to political elites as a critical channel in enforcing democratic accountability. 相似文献
174.
175.
Innovating upon previous field experiments and theories of identity‐based discrimination, we test whether public officials are using searches (“identity‐questing”) to profile citizens and acting on latent biases. Pairs of “institutional” and “noninstitutional” requesters send lower and moderate burden freedom of information (FOI) requests—providing no identity cues apart from undistinctive names, e‐mails, and ID numbers—to nearly 700 of Brazil's largest municipalities. Results show institutional requesters receive one‐fifth more responses than noninstitutional comparators. For moderate versus lower burden requests, noninstitutional requesters are 11% less likely to receive a compliant response than their institutional comparators. The only plausible explanation for these results is identity‐questing, a phenomenon that has far‐reaching policy implications. Most of the world's FOI laws, for example, contain vague ID obligations, which translate incoherently from laws to regulation and practice. Results enjoin public service providers to protect the identities of citizens by default or upon request. 相似文献
176.
Sierra F. Kaszubinski B.Sc. Jennifer L. Pechal Ph.D. Carl J. Schmidt M.D. Heather R. Jordan Ph.D. Mark E. Benbow Ph.D. Mariah H. Meek Ph.D. 《Journal of forensic sciences》2020,65(2):513-525
Microbial communities have potential evidential utility for forensic applications. However, bioinformatic analysis of high-throughput sequencing data varies widely among laboratories. These differences can potentially affect microbial community composition and downstream analyses. To illustrate the importance of standardizing methodology, we compared analyses of postmortem microbiome samples using several bioinformatic pipelines, varying minimum library size or minimum number of sequences per sample, and sample size. Using the same input sequence data, we found that three open-source bioinformatic pipelines, MG-RAST, mothur, and QIIME2, had significant differences in relative abundance, alpha-diversity, and beta-diversity, despite the same input data. Increasing minimum library size and sample size increased the number of low-abundant and infrequent taxa detected. Our results show that bioinformatic pipeline and parameter choice affect results in important ways. Given the growing potential application of forensic microbiology to the criminal justice system, continued research on standardizing computational methodology will be important for downstream applications. 相似文献
177.
Alex J. Krotulski M.S.F.S. Susan Jansen Varnum Ph.D. Barry K. Logan Ph.D. 《Journal of forensic sciences》2020,65(2):550-562
Novel psychoactive substances (NPS) are synthetic drugs that pose serious public health and safety concerns. A multitude of NPS have been identified in the United States, often implicated in forensic investigations. The most common and effective manner for identifying NPS is by use of mass spectrometry and the true utility lies within nontargeted acquisition techniques. During this study, a liquid chromatography quadrupole time-of-flight mass spectrometry (LC-QTOF-MS) assay was developed, validated, and implemented for forensic toxicology testing. A SCIEX TripleTOF™ 5600 + with SWATH® acquisition was used. Resulting data were compared against an extensive library database containing more than 800 compounds. The LC-QTOF-MS assay was applied to the reanalysis of biological sample extracts to discover emergent NPS. More than 3,000 sample extracts were analyzed, and more than 20 emerging NPS were detected for the first time. Among these were isopropyl-U-47700, 3,4-methylenedioxy-U-47700, fluorofuranylfentanyl, N-methyl norfentanyl, 2F-deschloroketamine, 3,4-methylenedioxy-alpha-PHP, eutylone, and N-ethyl hexedrone. 相似文献
178.
179.
Brian J. Phillips 《国际相互影响》2019,45(2):316-343
How does branding militant groups as “Foreign Terrorist Organizations” (FTOs) affect them? Beyond its obvious policy importance, this question speaks to debates about counterterrorism, terrorism financing, and organizational dynamics of subnational violence. This article analyzes FTO designation, a key policy used by the U.S. government since 1997 to impose costs on foreign terrorist groups and those who might support them. Contrary to arguments that sanctions are ineffective and that terrorism is too “cheap” to be affected, it is argued that designation should weaken terrorist groups, reducing their attacks over time. However, the effect is probably conditional. FTO designation should be especially effective against groups operating in U.S.-aligned countries, given the importance of international cooperation in counterterrorism. Global quantitative analyses suggest that FTOs operating in U.S.-aligned countries carry out fewer attacks over time than other groups, taking many other factors into consideration. 相似文献
180.
Levey Emma K. V. Garandeau Claire F. Meeus Wim Branje Susan 《Journal of youth and adolescence》2019,48(6):1068-1081
Journal of Youth and Adolescence - Adolescence tends to be characterized by a temporary peak in delinquent behavior, and friends in particular play a key role in the initiation and the development... 相似文献