全文获取类型
收费全文 | 25163篇 |
免费 | 799篇 |
专业分类
各国政治 | 1304篇 |
工人农民 | 1009篇 |
世界政治 | 2112篇 |
外交国际关系 | 959篇 |
法律 | 14650篇 |
中国共产党 | 5篇 |
中国政治 | 224篇 |
政治理论 | 5440篇 |
综合类 | 259篇 |
出版年
2020年 | 336篇 |
2019年 | 401篇 |
2018年 | 550篇 |
2017年 | 611篇 |
2016年 | 649篇 |
2015年 | 476篇 |
2014年 | 526篇 |
2013年 | 2730篇 |
2012年 | 627篇 |
2011年 | 728篇 |
2010年 | 571篇 |
2009年 | 614篇 |
2008年 | 656篇 |
2007年 | 671篇 |
2006年 | 647篇 |
2005年 | 590篇 |
2004年 | 602篇 |
2003年 | 642篇 |
2002年 | 532篇 |
2001年 | 950篇 |
2000年 | 881篇 |
1999年 | 734篇 |
1998年 | 406篇 |
1997年 | 333篇 |
1996年 | 293篇 |
1995年 | 290篇 |
1994年 | 341篇 |
1993年 | 309篇 |
1992年 | 454篇 |
1991年 | 488篇 |
1990年 | 450篇 |
1989年 | 442篇 |
1988年 | 433篇 |
1987年 | 459篇 |
1986年 | 462篇 |
1985年 | 452篇 |
1984年 | 409篇 |
1983年 | 444篇 |
1982年 | 332篇 |
1981年 | 298篇 |
1980年 | 247篇 |
1979年 | 327篇 |
1978年 | 229篇 |
1977年 | 198篇 |
1976年 | 185篇 |
1975年 | 168篇 |
1974年 | 178篇 |
1973年 | 159篇 |
1972年 | 154篇 |
1971年 | 138篇 |
排序方式: 共有10000条查询结果,搜索用时 619 毫秒
1.
Cyanide is a highly toxic agent that has been frequently used for suicide in South Korea. It is also used in various industrial fields, such as metal plating, in which many accidental cyanide intoxications have occurred. To overcome the disadvantages of conventional cyanide analysis methods, a simple and fast method for the analysis of cyanide in whole blood using ion chromatography (IC) with amperometric detection was developed in this study. Whole blood samples were deproteinized, diluted, and analyzed using an IC–amperometric detection system. The limits of detection and quantitation were 0.1 and 0.2 mg/L, respectively. The method showed good linearity in the range of 0.2 to 50 mg/L with R2 > 0.99. The intra- and inter-assay precision and accuracy values were <10%. The established method was successfully applied to analyze whole blood samples from three cyanide intoxication cases. 相似文献
2.
3.
ABSTRACTSince the late 20th century, the federal government has regulated colleges’ and universities’ handling of campus sexual and gender-based violence (CSGBV). Although the arc of history has bent toward establishing greater protections for victims of such violence, new proposed regulation by the U.S. Department of Education under the Trump administration focuses more heavily on ensuring due process rights for students accused of CSGBV. Most recently, in November 2018, U.S. Secretary of Education, Betsy DeVos submitted a proposed rule change to the regulation of Title IX of the Education Amendments of 1972. This article provides the historical context for this most recent proposed federal regulation of CSGBV and discusses the criticism of this proposal that, if it is implemented, students would become less safe in the ivory tower. 相似文献
4.
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
5.
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
6.
Angela J. Thielo Francis T. Cullen Alexander L. Burton Melissa M. Moon Velmer S. Burton Jr 《Victims & Offenders》2019,14(3):267-282
ABSTRACTRecently, “problem-solving” courts have been developed as an alternative to imprisonment. They are often called “specialty” courts because they process and divert into treatment programs offenders who are seen as different from the general criminal population, such as those with mental health or drug problems, those who are homeless or veterans, and those who engage in domestic violence. Based on a 2017 national survey of 1,000 respondents, the current study examines overall public support for rehabilitation as a goal of corrections and then focuses specifically on support for different types of specialty courts. The analysis reveals that the American public endorses not only the rehabilitative ideal but also the use of problem-solving courts. Further, with only minimal variation, strong support for these courts appears to exist regardless of political orientation and sociodemographic characteristics. 相似文献
7.
Sim Lester Kim Su Yeong Zhang Minyu Shen Yishan 《Journal of youth and adolescence》2019,48(3):510-526
Journal of Youth and Adolescence - Language brokering is a prevalent phenomenon in ethnic minority immigrant populations. Although accruing evidence points to the beneficial impacts of healthy role... 相似文献
8.
Annelieke C. van den Berg Sarah N. Giest Sandra M. Groeneveld Wessel Kraaij 《Public administration review》2020,80(6):989-1000
Governments are increasingly implementing smart and digital approaches to promoting citizen participation. However, whether online participation platforms are tools that improve inclusivity in citizen participation remains underexplored. To address this gap, this article focuses on the role of recruitment messages and their effect on participation in an online participation platform by gender and age. A field experiment with a neighborhood census sample (N = 6,066) shows that online participation dips for younger and older citizens and is equal among women and men. For the age groups between 60 and 75, differences in the control and intervention recruitment messages significantly impacted participation. These findings can help public managers tailor recruitment strategies to facilitate inclusive participation and represent a first step toward learning what types of messages are effective for whom. 相似文献
9.
Cheol Liu Montgomery Van Wart Soonhee Kim Xiaohu Wang Alma McCarthy David Ready 《Australian Journal of Public Administration》2020,79(3):298-329
The increased use of information and communication technologies (ICTs) has triggered enormous innovation in the public sector and created positive public value at the managerial, delivery of services, and policy levels. However, these positive outcomes do not automatically accrue simply by adoption of ICTs as public leaders can fail to adopt relevant new ICTs, use them poorly, or use them in ways that actually diminish public value, which raises the question of the importance of e-leadership. This article examines e-leadership and innovation capacity at the individual public manager level and fills in some gaps about the practice and implementation of ICTs in the public sector. We explore eight research questions useful in theorizing about e-leadership, develop constructs of e-leadership, and describe the current development of e-leadership. By comparing e-leadership in two country settings (South Korea and the United States), we also overcome the limitations of the existing Western-oriented studies about innovations in the public sector. In addition to the growth of e-leadership use and requirements for a variety of competencies equivalent to, but separate from, traditional communication competences, we find that national cultures exert significant influence on the major constructs of e-leadership, which implies that an effective e-leadership strategy should consider cultural contexts seriously. 相似文献
10.
Kevin J. Elliott 《American journal of political science》2020,64(2):385-397
This article describes how issue specialization through deliberative institutions called “issue publics” can improve the quality of democratic decision making. Issue specialization improves decisions by instantiating a cognitive division of labor among the mass public, which creates efficiencies in decision making and grants large groups of average citizens a scalable advantage over small groups of even the smartest and most capable individuals. Issue specialization further improves decisions by capturing issue-specific information, concentrating it within the specialized deliberative enclaves of issue publics, and refining citizens’ issue preferences. These advantages are brought to bear in wider democratic politics and policy through information shortcuts and through the specialized electoral incentives of representatives. The article responds to concerns about political ignorance, polarization/partisanship, rent seeking, and socioeconomic bias and argues that issue specialization can provide a valuable brake to polarization yet needs institutional supplementation to engage marginalized citizens and combat bias. 相似文献