全文获取类型
收费全文 | 13559篇 |
免费 | 371篇 |
专业分类
各国政治 | 637篇 |
工人农民 | 474篇 |
世界政治 | 1054篇 |
外交国际关系 | 477篇 |
法律 | 8076篇 |
中国政治 | 187篇 |
政治理论 | 2863篇 |
综合类 | 162篇 |
出版年
2020年 | 151篇 |
2019年 | 219篇 |
2018年 | 283篇 |
2017年 | 273篇 |
2016年 | 267篇 |
2015年 | 181篇 |
2014年 | 262篇 |
2013年 | 1408篇 |
2012年 | 330篇 |
2011年 | 440篇 |
2010年 | 410篇 |
2009年 | 400篇 |
2008年 | 372篇 |
2007年 | 348篇 |
2006年 | 373篇 |
2005年 | 305篇 |
2004年 | 362篇 |
2003年 | 332篇 |
2002年 | 294篇 |
2001年 | 526篇 |
2000年 | 448篇 |
1999年 | 393篇 |
1998年 | 189篇 |
1997年 | 184篇 |
1996年 | 131篇 |
1995年 | 138篇 |
1994年 | 141篇 |
1993年 | 138篇 |
1992年 | 246篇 |
1991年 | 295篇 |
1990年 | 262篇 |
1989年 | 274篇 |
1988年 | 241篇 |
1987年 | 277篇 |
1986年 | 251篇 |
1985年 | 243篇 |
1984年 | 240篇 |
1983年 | 227篇 |
1982年 | 171篇 |
1981年 | 167篇 |
1980年 | 136篇 |
1979年 | 169篇 |
1978年 | 130篇 |
1977年 | 90篇 |
1976年 | 95篇 |
1975年 | 98篇 |
1974年 | 117篇 |
1973年 | 126篇 |
1972年 | 92篇 |
1970年 | 76篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
801.
In his plenary presentation of 11 July 2000 at the XIII International AIDS Conference, Kenneth Roth, the Executive Director of Human Rights Watch, the largest US-based human rights organization, reflects on whether a human-rights perspective can help us confront the AIDS crisis. More specifically, he asks the question whether human rights can help us meet the urgent challenge of securing the vast resources we need for treatment and prevention. Mr Roth believes they can. He argues that human rights are a powerful tool for meeting basic human needs, but that their contribution to the fight against AIDS is not as simple or straightforward as many often assume. In his presentation, he explains why. 相似文献
802.
The HIV/AIDS epidemic continues to be a leading public health issue in the United States. During the past decade, the epidemic has shifted away from the gay community, although gay and bisexual men continue to be the largest single HIV exposure category. Now, HIV increasingly affects low-income people of colour in urban areas, as well as women. As AIDS becomes more and more a minority, inner-city disease, public focus on the epidemic as a significant social and political issue is waning. While a full survey of current issues in US law is beyond the scope of this article, the focus here is on current issues that are highly relevant to the direction the epidemic appears to be taking. 相似文献
803.
The authors review the Business Judgment Rule as applied to a not-for-profit director's duty of care, with particular emphasis on the different forms of state statutory liability shields that serve to enhance the protections of the Rule. They also examine current trends in enforcement of breach of fiduciary duty of care standards, and provide a series of specific recommendations for not-for-profit boards to consider implementing as a means of increasing the likelihood of affording such protections to individuals serving as directors. 相似文献
804.
Henry K. Fine 《Journal of youth and adolescence》1973,2(4):291-301
Two groups of college students were identified using the MMPI as a screening device: those with normal profiles and those with schizophrenic profiles. All those with previous psychiatric treatment were eliminated. A third group of hospitalized schizophrenics was matched to the first two along lines of age, sex and socioeconomic status. The three groups were then studied via a semistructured interview and compared for the clinical features of hospitalized schizophrenics and for objective enironmental stresses. As predicted, a group of well-functioning, untreated schizophrenics was delineated. The usefulness of the MMPI as a screening device is clarified, and the question of the true prevalence of schizophrenia is discussed. Contrary to prediction, the well-functioning schizophrenics were similar to the hospitalized schizophrenics, not to the normal controls, with regard to objective environmental stresses. The possible meaning of this is discussed considering the concept of subjective environmental stresses.This research is in part supported by USPHS grants MH-18991, MH-19477-01, and State of Illinois 131-13-RD, State of Illinois 218-12-RD.This reasearch is part of an extensive program investigating schizophrenia which is being conducted jointly by the Psychosomatic and Psychatric Institute of Michael Reese Hospital, the Department of Psychiatry, Pritzker School of Medicine, the University of Chicago, and the Illinois State Psychiatric Institute.Received M.D. from Northwestern University. Served psychiatric residency at the Psychosomatic and Psychiatric Institute of Michael Reese Hospital. Main interest is in psychotherapy and psychodynamics of youth. 相似文献
805.
Ego identity status and decision styles 总被引:1,自引:0,他引:1
It was hypothesized that the decision processes used in coping with the identity crisis would be related to more general decision styles in that identity achievers and moratoriums would tend to be reflective in their conceptual tempo while foreclosures would typically be impulsive. No prediction was made about identity diffusions. Ninety-two male college students were given an identity status interview and the Matching Familiar Figures Test. The results were consistent with the hypotheses, and in addition it was found that identity diffusions were generally impulsive. Since conceptual tempo has been found to be well established in childhood, the results of this study have implications for the early prediction of adult identity status.Received Ph.D. from SUNY/Buffalo. Recent research has been mainly concerned with the development of ego identity and correlates of the different identity statuses.Received Ph.D. from SUNY/Buffalo. Recent research has been mainly concerned with the development of ego identity and correlates of the different identity statuses. 相似文献
806.
Kenneth B. Stein William F. Soskin Sheldon J. Korchin 《Journal of youth and adolescence》1974,3(4):281-292
The study consisted of two parts. First, a new scale of interpersonal trust for adolescents was constructed using a representative sample of 70 students from a community high school. Second, the hypothesis was tested that disaffected youth compared to the more conventional would show less interpersonal trust. Two matched groups of 57 students each were employed for the second part of the study. Results indicate that the new scale is a reliable and valid measure. Correlates of the scale disclose that trust is associated with interpersonal distance, certain developmental factors, and the quality of parent-adolescent relations. Results from the second part of the study tend to confirm the hypothesis in that greater trust scores were found among students with more conventional beliefs.This study was partly supported by NIMH Grant No. MH9210, Ford Foundation Grant No. 69-0264B, and the Jessie and C. Clement Stone Foundation.Received his Ph.D. from the University of Kansas. Currently working on personality and clinical problems of adolescents and adults.Recieved his Ph.D. from the University of Michigan. Plans to continue his work of program development in the area of affect education in secondary schools.Received his Ph.D. from Harvard University. Current work is in the area of community mental health. 相似文献
807.
Israel W. Charny 《Human Rights Review》2000,1(3):15-39
Conclusion The problem of revisionism, or efforts to deny and censor the incontrovertible history of known genocides, is a growing one.
It is now clear that denial is inevitably a phase of the genocidal process, extending far beyond the immediate politically
expedient denials of governments who are currently engaging in genocidal massacre or have just recently done so—i.e., the
Chinese government's abject denials of the killings of some 5,000 in Tiananmen Square, or the Sri Lanka government's denials
of the state-organized massacre of 5,000 Tamil. Denials of genocide continue long after the event by a variety of groups and
people, including successor governments or successor enemies of the victim people, such as anti-Semites against Jews, Turks
against Armenians, and bigots and celebrants of violence and murder of all sorts. But such denials also occur—and this is
the most perplexing fact—among a variety of not obviously malevolent people, including intellectuals who, in the process of
calling for a better world, effectively exonerate, support, encourage, and participate in denials of a known genocide, implicitly
condoning and even celebrating its occurrence, meanings, and portents for the future. This article is an effort to study and
analyze this latter phenomenon, which has been little recognized. Together with previous essays on the psychology of more
explicit malevolent denials of genocide, the intention is to generate a broader psychological theory of denials of genocide
and revisionism by proposing that there are also a variety of “innocent denials” of the factual reality or significance of
known cases of genocide, and a variety of “innocent disavowals of violence” which in truth celebrate the violence. These “innocent
denials” join with the well-known explicit bigots in creating a vast panorama of dangerous denials of genocides and implicit
calls to new genocides in our world.
The basic thesis of this article has been under development since its first presentation in a plenary address at the Soviet
Academy of sciences in Yerevan, Armenia in 1990 on the occasion of the seventy-fifth anniversary of the Armenian Genocide. 相似文献
808.
Modeling Duration Dependence 总被引:1,自引:1,他引:0
As applications of duration analysis have burgeoned in politicalscience, scholars have become increasingly aware of the potentialsubstantive importance of duration dependence: the extent towhich the conditional hazards of the events of interest arerising or falling over time. Here I discuss the issue of durationdependence, focusing on the distinction between "spurious" dependencedue to unobserved heterogeneity and "true" duration dependencedue to state dependence in the process of interest. I presenta simple extension of a commonly used parametric duration modeltheWeibull modelwhich allows researchers to assess the influenceof causal variables on the nature and extent of duration dependencein their data. I then illustrate the application of this "generalizedWeibull" model using data on the duration of international alliances. 相似文献
809.
A ranking exists in electoral systems research of differentelectoral formulasthe mathematical functions governingthe conversion of votes into legislative seatsin termsof both proportionality of seats and votes and favorabilityto the largest party. I reexamine this issue with new methodsand new evidence, attempting to cross-validate previous rankingsusing a larger and more controlled data set and more preciseparametric methods than have been applied previously. The resultsby and large confirm previous knowledge but also illuminateseveral important new facets obscured in previous investigations.For example, at common ranges of district magnitude (from 5to 15 seats), it is shown that electoral formula may matterat least as much as district magnitude in shaping proportionality. 相似文献
810.
The Social Security Administration (SSA) initiated Project NetWork in 1991 to test case management as a means of promoting employment among persons with disabilities. The demonstration, which targeted Social Security Disability Insurance (DI) beneficiaries and Supplemental Security Income (SSI) applicants and recipients, offered intensive outreach, work-incentive waivers, and case management/referral services. Participation in Project NetWork was voluntary. Volunteers were randomly assigned to the "treatment" group or the "control" group. Those assigned to the treatment group met individually with a case or referral manager who arranged for rehabilitation and employment services, helped clients develop an individual employment plan, and provided direct employment counseling services. Volunteers assigned to the control group could not receive services from Project NetWork but remained eligible for any employment assistance already available in their communities. For both treatment and control groups, the demonstration waived specific DI and SSI program rules considered to be work disincentives. The experimental impact study thus measures the incremental effects of case and referral management services. The eight demonstration sites were successful in implementing the experimental design roughly as planned. Project NetWork staff were able to recruit large numbers of participants and to provide rehabilitation and employment services on a substantial scale. Most of the sites easily reached their enrollment targets and were able to attract volunteers with demographic characteristics similar to those of the entire SSI and DI caseload and a broad range of moderate and severe disabilities. However, by many measures, volunteers were generally more "work-ready" than project eligible in the demonstration areas who did not volunteer to receive NetWork services. Project NetWork case management increased average annual earnings by $220 per year over the first 2 years following random assignment. This statistically significant impact, an approximate 11-percent increase in earnings, is based on administrative data on earnings. For about 70 percent of sample members, a third year of followup data was available. For this limited sample, the estimated effect of Project NetWork on annual earnings declined to roughly zero in the third followup year. The findings suggest that the increase in earnings may have been short-lived and may have disappeared by the time Project NetWork services ended. Project NetWork did not reduce reliance on SSI or DI benefits by statistically significant amounts over the 30-42 month followup period. The services provided by Project NetWork thus did not reduce overall SSI and DI caseloads or benefits by substantial amounts, especially given that only about 5 percent of the eligible caseload volunteered to participate in Project NetWork. Project NetWork produced modest net benefits to persons with disabilities and net costs to taxpayers. Persons with disabilities gained mainly because the increases in their earnings easily outweighed the small (if any) reduction in average SSI and DI benefits. For SSA and the federal government as a whole, the costs of Project NetWork were not sufficiently offset by increases in tax receipts resulting from increased earnings or reductions in average SSI and DI benefits. The modest net benefits of Project NetWork to persons with disabilities are encouraging. How such benefits of an experimental intervention should be weighed against costs of taxpayers depends on value judgments of policymakers. Because different case management projects involve different kinds of services, these results cannot be directly generalized to other case management interventions. They are nevertheless instructive for planning new initiatives. Combining case and referral management services with various other interventions, such as longer term financial support for work or altered provider incentives, could produc 相似文献