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   10675篇
  免费   348篇
  国内免费   4篇
各国政治   640篇
工人农民   377篇
世界政治   723篇
外交国际关系   494篇
法律   5721篇
中国共产党   144篇
中国政治   417篇
政治理论   1921篇
综合类   590篇
  2021年   79篇
  2020年   160篇
  2019年   150篇
  2018年   206篇
  2017年   237篇
  2016年   236篇
  2015年   242篇
  2014年   251篇
  2013年   1176篇
  2012年   309篇
  2011年   453篇
  2010年   381篇
  2009年   416篇
  2008年   404篇
  2007年   383篇
  2006年   393篇
  2005年   320篇
  2004年   265篇
  2003年   278篇
  2002年   208篇
  2001年   392篇
  2000年   347篇
  1999年   302篇
  1998年   146篇
  1997年   102篇
  1996年   111篇
  1995年   99篇
  1994年   109篇
  1993年   105篇
  1992年   159篇
  1991年   160篇
  1990年   147篇
  1989年   138篇
  1988年   158篇
  1987年   156篇
  1986年   162篇
  1985年   146篇
  1984年   145篇
  1983年   154篇
  1982年   92篇
  1981年   67篇
  1980年   80篇
  1979年   98篇
  1978年   78篇
  1977年   66篇
  1976年   68篇
  1975年   58篇
  1972年   53篇
  1971年   54篇
  1969年   54篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
Although public administration scholars have long been interested in promoting administrative ethics, recent lapses in judgment by government employees make the study of ethics even more pressing. Yet, we know relatively little about how public values and publicly oriented motives influence the ethical obligations employees reference when confronting organizational problems. We employ Perry's (2000) process model of public service motivation to connect public values, public service motivation, and employees' understanding of their ethical obligations. Using data collected from over 1,400 managers in United States municipal governments, we present findings that suggest that public service motivation appears to be positively correlated with ethical obligations rooted in virtue and integrity, or high road ethics, for less professionalized employees. Further, broader constellations of public values encourage increased application of high road ethics for the same employees, but only to the extent that they foster public service motivation.  相似文献   
42.
43.
In this introduction, we review the literature on intellectual property rights and access to medicines, identifying two distinct generations of research. The first generation analyzes the origins of new intellectual property rules, in particular the World Trade Organization’s Agreement on Trade-Related Aspects of Intellectual Property Rights (TRIPS), and the significance of TRIPS to developing countries. The second generation examines national-level experiences, as countries adjust their laws and practices to conform to TRIPS. Based on the insights provided by the articles in the special issue, we contribute to the second generation by considering a pair of overarching sets of issues. First, we highlight the domestic political challenges that affect how countries go about implementing their new obligations under TRIPS. We argue that alliances and coalitions are necessary to underpin the use of policy instruments designed to conform to TRIPS while taking into account local conditions and needs, and we present insights that allow us to understand why alliances and coalitions are difficult to construct and sustain in this area. Second, we explain why policies that many countries adopt in response to TRIPS often do not generate their desired or intended outcomes. In the last section of the introduction, we review the articles that appear in this special issue.  相似文献   
44.
45.
This paper explores the use of European erotic death imagery produced in the Death and the Maiden (D&M) genre in two time periods. It compares and contrasts D&M imagery produced by the Germanic-speaking proto/early-Reformation artists, Hans Baldung (alias Grien) (c1484–1545), Niklaus Manuel (known as Deutsch) (c1484–1530) and Sebald Beham (known as Hans Sebald Beham) (1500–1550) which highlighted the folly, futility and transience of earthly vanities during the transition from Roman Catholic to Protestant Christianity, with contemporary calendar art produced by Cofani Funebri (from 2003) and Lindner (from 2010) which advertise coffins manufactured in the increasingly secular countries of Italy and Poland. Drawing on Biblical narrative, Augustinian theology and European socio-cultural perceptions of gender, this paper argues that these D&M images are highly eroticised and place woman as signifiers of transcient life (vanitas) and earthly pleasure (voluptas), juxtaposing her with a masculine/male representation of death; Death being imaged as an individual in the sixteenth century, and as a coffin in the contemporary works. The paper also contextualises the imagery in terms of traditional European Christian notions of life and death, as informed by the Biblical Fall narrative, with its elucidations of sin, concupiscence and punishment. It thus asserts that both socio-cultural and religious attitudes towards gender are highly significant in D&M imagery and indeed in terms of the artworks, argues that the masculine signifier of Death can be placed as Adam, whilst the Maiden, as fecund life, represents Eve. However, the overt eroticism of both sets of artworks also allows for a reading that draws on Messaris' [(1997). Visual persuasion; the role of images in advertising. London: Sage] notion that visual images ‘make a persuasive communication due to iconicity; the emotional response to the visual image presented’. Thus, this paper contrasts D&M imagery produced over 400 years apart to examine consciously erotic gendered thanantological allegories of women as vanitas and voluptas, and the male/masculine as representations of Death.  相似文献   
46.
47.
Research has demonstrated that paternal incarceration is associated with lower levels of educational involvement among fathers and primary caregivers, but little is known regarding caregiver educational involvement when mothers have been incarcerated. In this study, we present the first analysis of variation in school- and home-based educational involvement by maternal incarceration history, pairing survey and interview data to connect macro-level group differences with micro-level narratives of mothers’ involvement in their children's education. Our survey data demonstrate that children of ever-incarcerated mothers experience increased school-based educational involvement by their primary caregivers, regardless of whether the caregiver is the mother herself. Our interview data point to compensatory parenting as a key motivating factor in educational involvement, wherein a caregiver endeavors to “make up for” the child's history of maternal incarceration. Findings add to the literature demonstrating maternal incarceration as a distinct experience from both paternal incarceration and material disadvantage alone, and they suggest the need to explore the role of schools as potential points of productive institutional involvement for mothers with an incarceration history.  相似文献   
48.
Novel synthetic opioids contribute considerably to the opioid epidemic, especially with the frequent emergence of structurally similar compounds. This case report describes a fatal intoxication involving 2-methyl AP-237. A 54-year-old Caucasian male was found deceased from an apparent drug overdose. A plastic container labeled “2MAP” and a cut straw were found in the decedent's backpack at the scene. A white substance found in the container tested positive for fentanyl by field testing. According to his medical history, the decedent was treated for a drug overdose 3 years prior to his death. With no diagnostic findings at autopsy, the case was submitted for toxicological analysis. An unknown substance was detected in peripheral blood and urine using gas chromatography with nitrogen phosphorous detection (GC-NPD). Further testing was conducted using gas chromatography–mass spectrometry (GC–MS) and liquid chromatography-quadrupole-time-of-flight mass spectrometry (LC-QTOF-MS) which confirmed the presence of 2-methyl AP-237 and potential metabolites in blood and urine. Quantitation by GC-NPD revealed concentrations of 2-methyl AP-237 in blood and urine at 480 ng/mL and 4200 ng/mL, respectively. The toxicological analysis also identified and quantitated alprazolam in the blood at 55 ng/mL. Additionally, the metabolism of 2-methyl AP-237 was investigated and three hydroxylated metabolites were identified in peripheral blood and urine. Limited literature is available for the detection and quantitation of 2-methyl AP-237 in postmortem specimens. Given the toxicological findings with unremarkable autopsy findings, this case is an example of a fatal intoxication involving 2-methyl AP-237.  相似文献   
49.
As the overdose epidemic overwhelmed medicolegal death investigation offices and toxicology laboratories, the King County Medical Examiner's Office responded with “real-time” fatal overdose surveillance to expedite death certification and information dissemination through assembling a team including a dedicated medicolegal death investigator, an information coordinator, and student interns. In-house testing of blood, urine, and drug evidence from scenes was performed using equipment and supplies purchased for surveillance. Collaboration with state laboratories allowed validation. Applied forensic epidemiology accelerated data dissemination. From 2010 to 2022, the epidemic claimed 5815 lives in King County; the last 4 years accounted for 47% of those deaths. After initiating the surveillance project, in-house testing was performed on blood from 2836 decedents, urine from 2807, and 4238 drug evidence items from 1775 death scenes. Time to complete death certificates decreased from weeks to months to hours to days. Overdose-specific information was distributed weekly to a network of law enforcement and public health agencies. As the surveillance project tracked the epidemic, fentanyl and methamphetamine became dominant and were associated with other indicators of social deterioration. In 2022, fentanyl was involved in 68% of 1021 overdose deaths. Homeless deaths increased sixfold; in 2022, 67% of 311 homeless deaths were due to overdose; fentanyl was involved in 49% and methamphetamine in 44%. Homicides increased 250%; in 2021, methamphetamine was positive in 35% of 149 homicides. The results are relevant to the value of rapid surveillance, its impact on standard operations, selection of cases requiring autopsy, and collaboration with other agencies in overdose prevention.  相似文献   
50.
This work presents a data survey regarding the qualitative chemical analysis of drugs seized by the Police in the state of Minas Gerais between July 2017 and June 2022, including an evaluation of labeling of 265 samples of anabolic androgenic steroids (AAS) seized in 2020. The Active Pharmaceutical Ingredients (API) present in the samples were identified through chemical analysis and classified by system Anatomical Therapeutic Chemical (ATC) methods. Analysis of the labeling information for 265 samples of AAS followed the guidance of legislation RDC 71 (2009) from ANVISA. For this study 6355 seized pharmaceuticals underwent qualitative chemical analysis that corresponded to 7739 APIs successfully identified and classified. Among the components studied AAS, psychostimulants, anesthetics, and analgesics were the most commonly examined. AAS seized and tested increased by over 100% and for the majority of the samples analyzed were found to not match the labeling on the packaging. In the meantime, anti-obesity drugs presented a prominent increase of 400% from 2020/1 to 2021/2, during covid-19 quarantine. Seized pharmaceuticals and tests can support information in the planning of public health and safety policies.  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