全文获取类型
收费全文 | 7148篇 |
免费 | 215篇 |
专业分类
各国政治 | 235篇 |
工人农民 | 244篇 |
世界政治 | 480篇 |
外交国际关系 | 214篇 |
法律 | 4883篇 |
中国政治 | 47篇 |
政治理论 | 1223篇 |
综合类 | 37篇 |
出版年
2020年 | 92篇 |
2019年 | 112篇 |
2018年 | 130篇 |
2017年 | 159篇 |
2016年 | 162篇 |
2015年 | 109篇 |
2014年 | 157篇 |
2013年 | 643篇 |
2012年 | 169篇 |
2011年 | 186篇 |
2010年 | 159篇 |
2009年 | 156篇 |
2008年 | 187篇 |
2007年 | 214篇 |
2006年 | 222篇 |
2005年 | 179篇 |
2004年 | 187篇 |
2003年 | 201篇 |
2002年 | 164篇 |
2001年 | 314篇 |
2000年 | 291篇 |
1999年 | 220篇 |
1998年 | 85篇 |
1997年 | 69篇 |
1996年 | 75篇 |
1995年 | 68篇 |
1994年 | 76篇 |
1993年 | 61篇 |
1992年 | 141篇 |
1991年 | 154篇 |
1990年 | 136篇 |
1989年 | 155篇 |
1988年 | 135篇 |
1987年 | 149篇 |
1986年 | 136篇 |
1985年 | 152篇 |
1984年 | 118篇 |
1983年 | 140篇 |
1982年 | 93篇 |
1981年 | 94篇 |
1980年 | 69篇 |
1979年 | 99篇 |
1978年 | 74篇 |
1977年 | 66篇 |
1976年 | 57篇 |
1975年 | 46篇 |
1974年 | 57篇 |
1973年 | 59篇 |
1971年 | 50篇 |
1970年 | 46篇 |
排序方式: 共有7363条查询结果,搜索用时 31 毫秒
321.
The study reported in this paper explores how effective Public Private Partnerships (PPP) have been as critical providers of capital assets within the state education sector in the UK. Specifically, the research investigates the impact on educational provision of the UK government's contentious £43 billion Private Finance Initiative (PFI). The inquiry focuses on 27 English Local Education Authorities (LEAs) currently or recently involved in PFI. The investigation examines the effect of PFI's on LEA decision‐making processes and discusses these authorities assessment of the UK government's current PFI strategy. An evaluation of PFI as a source of sustainable finance is reported as well as recommendations made for LEAs currently considering adoption of PFI. Through such analysis, this study seeks to de‐layer and ascertain the influence of complex external environmental influences and stakeholders that need to be taken into account in order to make PPPs work. The paper concludes by presenting the critical considerations for enhancing the working relationship between private and public sector partners. Copyright © 2007 John Wiley & Sons, Ltd. 相似文献
322.
The self-concerns and social expectations that are part of the identity development process may lead adolescents to think that others survey them for signs of individuality. The novelty of identity development may also lead to feelings of uniqueness and invulnerability. The imaginary audience and personal fable may therefore stem from identity development and not from the emergence of formal operations. In this study high school and first-year university students (N=255) completed measures of adolescent egocentrism, identity development, and formal operations. Egocentrism was moderately associated with higher scores on identity crisis and identity achievement, and with lower scores on identity diffusion. There was no significant relationship between egocentrism and the emergence of formal operations.Received his M.Sc. and Ph.D. from the University of Victoria. His main interests are in personality, social and developmental psychology.Currently completing a master's degree at Lakehead University. Interests are in social and clinical psychology. 相似文献
323.
Abstract: The objective of a national statistical system is to provide relevant, comprehensive, accurate and objective (politically untainted) statistical information. There are multiple uses for the information collected, but generally statistics are invaluable for monitoring the country's economic and social conditions, the planning and evaluation of government and private-sector programs and investments, policy debates and advocacy, and the creation and maintenance of an informed public. This paper discusses ten broad criteria for evaluating the efficiency of a national statistical system: the broad framework, including the legal one, as well as the rank and standing of the chief statistician; professional core values; non-political objectivity and the means used to ensure this; systems and approaches used to assess and meet federal priorities; systems and approaches used to assess and meet provincial (state) priorities; systems and approaches to assess and meet other users' priorities; mechanisms for the coordination of the statistical system; balancing priorities against available resources; serving the needs of different client groups; and generating a supportive environment. Sommaire: Le systéme statistique national vise à fournir des données pertinentes, complètes, exactes et objectives, ?est-à-dire à l'abri de l'ingérence politique. Cette information contribue à la réalisation de nombreux objectifs: elle permet de suivre l'évolution de la conjoncture économique et sociale du pays, de planifier et d'evaluer les programmes et les investissements dans les secteurs public et privé, de tenir des discussions sur les politiques et les défendre, ainsi que de voir à ce que le public soit toujours bien renseigné. Dix critères géneraux d'évaluation des systèmes statistiques nationaux sont analysés dans l'exposé: le cadre généaral, entre autres le volet juridique et la place occupée par le statisticien en chef; les valeurs professionnelles fondamentales; l'objectivité non politique et les mesures prises pour l'assurer; les systèmes et les méthodes servant àévaluer et respecter les priorites fédérates; les systèmes et les méthodes servant àévaluer et respecter les priorités des provinces (les états); les systèmes et les méthodes servant %aG évaluer et respecter les priorités d'autres utilisateurs; les mécanismes de coordination du système statistique; la mise en équilibre des priorités en fonction des ressources disponibles; la satisfaction des besoins de différents groupes de clients; la création d'un environnement favorable. 相似文献
324.
325.
Young adult adoptees and nonadoptees provided retrospective accounts of family relationships from infancy to young adulthood. Adoptive families were portrayed as more cohesive and adaptable than nonadoptive families. Adoptive fathers were recalled as being closer to their children then were nonadoptive fathers in the years preceding adolescence. Within the same time frame, adoptive mothers were drawn in a less hierarchical relation to their children than were other parents. Also, while adoptive males saw themselves as presently unconnected to their adoptive parents, adopted females perceived themselves as more connected to their parents in the present than any other period of time. Openness of communication and acknowledgment of difference in adoptive family formation varied with graphic retrospective accounts. Results were considered in terms of discontinuities between reported observations of adoptive families and adoptees' personal reflections on family developmental history.Received PhD in clinical psychology from the State University of New York at Stony Book. Research interests: adoptive family relations, social attributions of children and their parents.Received M.A. from the University of Guelph, Guelph, Ontario, Canada N1G 2W1. Research interests: development of identity, adoption.Received Ph.D. in social psychology from the University of Toronto. Research interests: attribution, jealousy, parents' theories of child psychology. 相似文献
326.
Elizabeth J. Susman Lorah D. Dorn Ph.D. George P. Chrousos 《Journal of youth and adolescence》1991,20(2):167-190
The purpose of this study was to test hypotheses regarding (1) relations among negative affect and hormones of gonadal and adrenal origin in young adolescents, at three times of measurement, over a one-year period; and (2) stability of negative affect. The sample consisted of 10- to 14-year-old boys (N=56) and 9- to 14-year-old girls (N=52). The adolescents were assessed three times at 6-month intervals over one year. Serum levels of gonadotropins, gonadal steroids, adrenal androgens, and cortisol were assessed, as well as stage of pubertal development (Tanner criteria). The negative affect assessments consisted of self-report questionnaire and interview measures of anxiety and depressive affect, as well as mother reports of internalizing behavior problems. In the concurrent (cross-sectional) analyses, boys reporting higher levels of negative affect tended to be those at higher genital stage or older age, with lower testosterone and cortisol levels and lower dehydroepian-drosterone sulphate levels. In the longitudinal analyses, negative affect, and to a lesser extent hormone levels at the first time of measurement predicted negative affect 12 months later. The findings suggest that puberty-related hormone levels should be considered along with psychological characteristics in examining the processes involved in the development of negative affect during the pubertal years.Received Ph.D. from The Pennsylvania State University. Research interests include hormone-behavior interactions and emotional development.Received Ph.D. from The Pennsylvania State University. Research interests include neuroendocrinology and adolescent depression.Recieved M.D. from Athens University. Research interests include hypothalamic releasing factors and stress. 相似文献
327.
328.
Tax design decisions are subject to many influences, including economic and political realities. Those who make tax policy at the state level are under constant pressure to modify taxes and tax structures at the margin. In making their decisions, policy makers must assess and weigh the often conflicting advice that results from varying outlooks and interests among, as well as within, the groups providing such input.
Using Hawaii's liquor tax as a case study, this paper illustrates how seemingly innocuous policy meddling can turn a good tax into a bad one. The events that led the Hawaii Legislature to decide to substitute a flawed gallonage levy for a successful ad valorem tax are reviewed. The relative merits of ad valorem and per-unit liquor taxes are discussed. Implications of adoption of the gallonage tax are presented. Finally, the article discusses the reasons why meddling may be attractive to both taxpayers and those who levy the tax, and it concludes that tax design criteria should include disincentives to meddle as a reasonable principle of taxation. 相似文献
Using Hawaii's liquor tax as a case study, this paper illustrates how seemingly innocuous policy meddling can turn a good tax into a bad one. The events that led the Hawaii Legislature to decide to substitute a flawed gallonage levy for a successful ad valorem tax are reviewed. The relative merits of ad valorem and per-unit liquor taxes are discussed. Implications of adoption of the gallonage tax are presented. Finally, the article discusses the reasons why meddling may be attractive to both taxpayers and those who levy the tax, and it concludes that tax design criteria should include disincentives to meddle as a reasonable principle of taxation. 相似文献
329.
Natural resource management policies like the Pacific salmon harvest policy developed by New York State often did not anticipate the extent of social, economic, and ethical concerns that would be generated, largely because the agency concentrated on biological considerations. The number of concerned stakeholders grew in proportion to both the success and failure of the initial policy. Had all participants been equally willing to recognize both the successes and the failures, development of a revised policy through group negotiations may have been possible, resulting in a cooperative mode of decision making. Instead, institutional mechanisms based on legislated process were ultimately the approach chosen for policy revision. 相似文献
330.