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   525篇
  免费   33篇
各国政治   35篇
工人农民   74篇
世界政治   38篇
外交国际关系   27篇
法律   276篇
中国政治   17篇
政治理论   82篇
综合类   9篇
  2024年   2篇
  2023年   4篇
  2022年   3篇
  2021年   10篇
  2020年   9篇
  2019年   24篇
  2018年   23篇
  2017年   24篇
  2016年   20篇
  2015年   24篇
  2014年   32篇
  2013年   60篇
  2012年   27篇
  2011年   23篇
  2010年   17篇
  2009年   31篇
  2008年   21篇
  2007年   26篇
  2006年   20篇
  2005年   27篇
  2004年   9篇
  2003年   11篇
  2002年   15篇
  2001年   7篇
  2000年   7篇
  1999年   7篇
  1998年   6篇
  1997年   7篇
  1996年   4篇
  1995年   4篇
  1994年   4篇
  1993年   4篇
  1992年   4篇
  1991年   3篇
  1990年   2篇
  1988年   1篇
  1987年   3篇
  1986年   5篇
  1984年   3篇
  1983年   6篇
  1982年   5篇
  1981年   4篇
  1980年   2篇
  1976年   1篇
  1974年   2篇
  1973年   1篇
  1972年   3篇
  1965年   1篇
排序方式: 共有558条查询结果,搜索用时 15 毫秒
81.
Early puberty is associated with stressful family environments, early sexual intercourse, and teenage pregnancy. We examined pubertal timing and sexual debut among the 14-year-old offspring of teenage mothers. Mothers (71% Black, 29% White) were recruited as pregnant teenagers (12–18 years old). Data were collected during pregnancy and when offspring were 6, 10 and 14 years old (n = 318). Adolescents (50% male) compared the timing of their pubertal maturation to same-sex peers. There was a significant 3-way interaction effect of race, sex, and pubertal timing on sexual debut (n = 305). This effect remained significant in a model controlling for maternal age at first intercourse, substance use, exposure to trauma, authoritative parenting, and peer sexual activity (n = 255). Early maturation was associated with early sex in daughters, and may be one pathway for the inter-generational transfer of risk for teenage pregnancy among daughters of teenage mothers.  相似文献   
82.
The harm caused by many acts is not certain but probabilistic. Current public enforcement of the law combines harm-based sanctions (usually in criminal law) with act-based sanctions (very common in administrative law and regulation). We propose an economic theory of the choice between harm-based and act-based sanctions in public enforcement. The efficiency of act-based versus harm-based sanctions is analyzed and a typology of the determinants is drawn up. Our model suggests that harm-based sanctions are more efficient when (1) acquiring information about the act is important, (2) engaging in harm avoidance activities is advisable, (3) judgment-proofness is not a very significant problem, (4) punishment is especially costly, (5) changes in law are expensive or difficult to negotiate and (6) on average, potential criminals are better informed than the government about losses for society. Legal policy implications are discussed.  相似文献   
83.
The nanotechnology and biotechnology “revolutions” are so-called because their enabling technological breakthroughs were not simply inventions, but discoveries of entirely new methods of inventing. We hypothesize that university participants in either or both of these areas will exhibit greater collaboration with industry than researchers in other areas. We explore this hypothesis for 454 faculty members who conducted research that was patented during the period 1994–1999. Because our data include patents, publications, and funding at the individual level, we are able to examine the industry interaction of faculty who participated in the nanotechnology and biotechnology revolutions, as well as the interaction of faculty contributing to other areas of patentable science. We examine a variety of linkages, including sponsored research, consulting, publication with firm employees and measures of the potential for cross-campus collaboration. The results are striking in that they show significant differences in collaborative behavior across patent types and across the major program areas biological sciences, physical sciences and engineering. The results are consistent with a greater degree of tacit knowledge within the new methods of inventing. We also find significant differences in the embryonic nature and importance of patents across areas.  相似文献   
84.
This research study examined the perceptions of parents, and victims of domestic violence, after receiving filial therapy. Specifically, parents were trained in a 10-week filial therapy model, Child–Parent Relationship Training. At the completion of the study, parents were given a semi-structured, open-ended style interview to gather information about their experiences. Themes emerged from the data participants provided, such as: experiencing increased warmth and trust in the child–parent relationship, changed parenting style, and decreased parental stress. Additionally, narratives reflect the positive influence the training had on parents’ perceptions of violence. A summary of the essence of the parent’s experiences is included.  相似文献   
85.
Purpose. In community‐based forensic psychiatry, patients' social ties are considered as protective factor in a risk management strategy. However, it is unknown whether these ties actually assist patients to refrain from re‐offending. We hypothesised a protective role for social ties in re‐offending behaviour. Methods. In a sample of forensic outpatients with a personality disorder (N = 55), the relationship between social ties (social contacts and participation in social institutions) and short‐term self‐reported re‐offences was studied within a prospective study design with a 6‐month follow‐up period. Results. Our results provide evidence for a protective function of club participation. For violent re‐offences, social institutions were protective and this protective function remained, even when a patient had network members with a criminal background. Except for work‐related contacts, social contacts did not provide protection. Conclusions. The protective effect of social ties, especially club participation, on desistance from re‐offending in forensic psychiatric patients merits further attention from researchers and clinicians.  相似文献   
86.
Globalization has led to new health challenges for the twenty-first century. These new health challenges have transnational implications and involve a large range of actors and stakeholders. National governments no longer hold the sole responsibility for the health of their people. These changes in health trends have led to the rise of global health governance as a theoretical notion for health policy making. The Southeast Asian region is particularly prone to public health threats such as emerging infectious diseases and faces future health challenges including those of noncommunicable diseases. This study looks at the potential of the Association of Southeast Asian Nations (ASEAN) as a regional organization to lead a regional dynamic for health cooperation in order to overcome these challenges. Through a comparative study with the regional mechanisms of the European Union (EU) for health cooperation, we look at how ASEAN could maximize its potential as a global health actor. Our study is based on primary research and semistructured field interviews. To illustrate our arguments, we refer to the extent of regional cooperation for health in ASEAN and the EU for (re)emerging infectious disease control and for tobacco control. We argue that regional institutions and a network of civil society organizations are crucial in relaying global initiatives, and ensuring the effective implementation of global guidelines at the national level. ASEAN’s role as a regional body for health governance will depend both on greater horizontal and vertical integration through enhanced regional mechanisms and a wider matrix of cooperation.  相似文献   
87.
This article argues that Australia's recently-passed data breach notification legislation, the Privacy Amendment (Notifiable Data Breaches) Act 2017 (Cth), and its coming into force in 2018, makes an internationally important, yet imperfect, contribution to data breach notification law. Against the backdrop of data breach legislation in the United States and European Union, a comparative analysis is undertaken between these jurisdictions and the Australian scheme to elucidate this argument. Firstly, some context to data breach notification provisions is offered, which are designed to address some of the problems data breaches cause for data privacy and information security. There have been various prominent data breaches affecting Australians over the last few years, which have led to discussion of what can be done to deal with their negative effects. The international context of data breach notification legislation will be discussed, with a focus on the United States and European Union jurisdictions, which have already adopted similar laws. The background to the adoption of the Australia legislation will be examined, including the general context of data privacy and security protection in Australia. The reform itself will be then be considered, along with the extent to which this law is fit for purpose and some outstanding concerns about its application. While data breach notification requirements are likely to be a positive step for data security, further reform is probably necessary to ensure strong cybersecurity. However, such reform should be cognisant of the international trends towards the adoption of data security measures including data breach notification, but lack of alignment in standards, which may be burdensome for entities operating in the transnational data economy.  相似文献   
88.
This article looks at collective memory formation—the study of monuments, memory, and public space—through a political science lens. An explicit theoretical focus on power relations in "monumental politics" and a methodological approach featuring large-N comparative analysis are combined to examine the process of monument creation, destruction, and alteration. Using a new database on monuments in 26 post-communist states over a 25-year period, patterns of monument transformation are identified, and official and private efforts to transform monuments are systematically compared across different regime types. The complex implications of private provision and alteration of monuments is also discussed.  相似文献   
89.
Abstract

This paper analyses work, childcare, and earnings of mothers in the slums of Guatemala City and Accra. Similar factors affect decisions to work and to use formal daycare, but the importance of childcare varies with the role of the formal labour sector. In Guatemala, where formal sector work is important, higher prices for informal care increase formal daycare use. However, daycare prices and proximity to daycare centers do not significantly affect earnings in Guatemala City and Accra, respectively. Providing formal daycare may be more important to mothers' decision to work in cities where formal sector work dominates.  相似文献   
90.
During forensic anthropological investigation, biological profile is determined by age, sex, ancestry, and stature. However, several individuals may share the same profile. Observation of discrete traits can yield useful information and contribute to identification. This research establishes the frequency of discrete traits of the sternum and ribs in a modern population in southern France, using 500 computer tomography (CT) scans of individuals aged 15–60 years. Only discrete traits with a frequency lower than 10% according to the literature were considered, a total of eight traits. All scans examined were three‐dimensional (3D) volume renderings from DICOM images. In our population, the frequency of all the discrete traits was lower than 5%. None were associated with sex or age, with the exception of a single trait, the end of the xiphoid process. Our findings can usefully be applied for identification purposes in forensic anthropology and medicine.  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