全文获取类型
收费全文 | 2611篇 |
免费 | 331篇 |
国内免费 | 560篇 |
出版年
2024年 | 5篇 |
2023年 | 79篇 |
2022年 | 105篇 |
2021年 | 139篇 |
2020年 | 171篇 |
2019年 | 171篇 |
2018年 | 154篇 |
2017年 | 155篇 |
2016年 | 163篇 |
2015年 | 147篇 |
2014年 | 140篇 |
2013年 | 375篇 |
2012年 | 117篇 |
2011年 | 123篇 |
2010年 | 110篇 |
2009年 | 129篇 |
2008年 | 142篇 |
2007年 | 123篇 |
2006年 | 142篇 |
2005年 | 121篇 |
2004年 | 111篇 |
2003年 | 88篇 |
2002年 | 73篇 |
2001年 | 54篇 |
2000年 | 51篇 |
1999年 | 39篇 |
1998年 | 25篇 |
1997年 | 31篇 |
1996年 | 26篇 |
1995年 | 27篇 |
1994年 | 15篇 |
1993年 | 18篇 |
1992年 | 19篇 |
1991年 | 7篇 |
1990年 | 11篇 |
1989年 | 13篇 |
1988年 | 8篇 |
1987年 | 11篇 |
1986年 | 8篇 |
1985年 | 7篇 |
1984年 | 6篇 |
1983年 | 9篇 |
1982年 | 4篇 |
1981年 | 3篇 |
1980年 | 6篇 |
1979年 | 2篇 |
1978年 | 11篇 |
1977年 | 5篇 |
1976年 | 3篇 |
排序方式: 共有3502条查询结果,搜索用时 62 毫秒
881.
Christine E. Koehn Ronald W. Thompson Karen J. Authier Mary Bosco 《Journal of child and family studies》2001,10(2):245-254
For the families in Palm Beach County who entered the child abuse and neglect system as a result of having a child placed into emergency shelter, their experience was that the system was frequently intimidating, confusing, and fragmented. The reaction of the children and their families to this system was often defensiveness and resistance. To increase the system's effectiveness, it was redesigned and privatized. The redesigned system included centralized shelter placement, a comprehensive assessment, independent service coordination, and treatment service provision within a managed care model. By emphasizing family involvement and quality service provision, the goal was to increase voluntary participation and improve family outcomes. Based on initial data, it appears that the redesigned system has been successfully implemented and has made notable progress toward meeting its system flow timeframes. The initial data also indicate that high percentages of families are participating in and are satisfied with the system, that children are spending less time in shelter placements, and that only one family has reentered the system. 相似文献
882.
Dr. Vivian Weil 《Science and engineering ethics》2001,7(4):471-482
To counter confusion about the term ‘mentor’, and address concerns about the scarcity of mentoring, I argue for an “honorific”
definition, according to which a mentor is virtuous like a saint or hero. Given the unbounded commitment of mentors, mentoring
relationships must be voluntary. In contrast, the role of advisor can be specified, mandated, and monitored. I argue that
departments and research groups have a moral responsibility to devise a system of roles and structures to meet graduate students’
and postdoctoral fellows’ needs for information and advice.
An earlier version of this paper was presented at a conference sponsored by the National Science Foundation on Mentoring and
Research Values: Students as Vital Human Resources, Chicago, March 1995. 相似文献
883.
Stephanie J. Bird Ph.D. 《Science and engineering ethics》2001,7(4):455-468
Although the terms mentor and thesis advisor (or research supervisor) are often used interchangeably, the responsibilities
associated with these roles are distinct, even when they overlap. Neither are role models necessarily mentors, though mentors
are role models: good examples are necessary but not sufficient. Mentorship is both a personal and a professional relationship.
It has the potential for raising a number of ethical concerns, including issues of accuracy and reliability of the information
conveyed, access, stereotyping and tracking of advisees, and the abuse of power. Nevertheless, mentors can be critically important
for professional success and are one of a number of elements that affect the responsible conduct of research. In addition,
the community as a whole has a responsibility to mentor junior members.
An earlier version of this paper was presented at a conference sponsored by the National Science Foundation on Mentoring and
Research Values: Students as Vital Human Resources, Chicago, USA, March 1995. 相似文献
884.
精神分裂症动物模型的建立与发展,是当前探索精神分裂症的神经生物学和认知心理学机制的一个关键课题。在加工-保护理论的基础上所建立起来的感觉运动门控精神分裂症模型一直受到普遍的关注。然而,高级认知活动是如何对感觉门控进行调节的这一核心问题目前还有待进一步的解决。本综述围绕着这个核心问题,系统地解释为什么惊反射前脉冲抑制成为目前最为流行的一种精神分裂症的模型,并介绍恐惧情绪学习对感觉运动门控调节作用的最新研究成果,以及阐述这种自上而下的调节作用如何受到在早期发育阶段的社会隔离的影响 相似文献
885.
886.
We studied the association between alexithymia (20-item Toronto Alexithymia Scale, TAS-20) and obesity, and also assessed the construct validity of the TAS-20 in terms of personality dimensions in obese patients. The TAS-20 and its subscales were analysed for their correlations with the NEO Personality Inventory - Revised (NEO PI-R) in an obese sample of 259 patients. Obesity was associated with higher scores on the TAS-20 than a Swedish reference sample. Obese men furthermore scored higher on Externally Oriented Thinking than the obese women. TAS-20 scores correlated with elevated Neuroticism and lower levels of Extraversion and Openness, in agreement with most previous research, but also somewhat unexpectedly with lower Conscientiousness and for women also with lower Agreeableness. The TAS-20 subscales showed divergent associations with personality variables, largely in accordance with previous findings. The associations were more prominent for the women, and some gender-specific patterns not previously reported were also revealed. 相似文献
887.
Dowrick PW 《American journal of community psychology》2007,39(1-2):13-19
A major vehicle for the practice of community psychology is through the organization of community-based activities. My colleagues
and I have developed many programs for community learning centers, in-school and after school programs, and community technology
centers. In the last 10 years, 30,000 people (mostly children) have participated in activities designed for enjoyment and
learning, with a view to adding protective factors and reducing negative factors in at-risk communities. Development of these
programs for literacy, education, life and work skills, has increasingly followed a community responsive model. Within each program, we created explicit images of future success. That is, people could see themselves being successful
where they normally fail: self modeling with feedforward. Data reports show that individuals generalized and maintained their new skills and attitudes, but the sustainability of
programs has been variable. Analysis of the variations indicates the importance of program level feedforward that brings the
future into the present. The discussion includes consideration of how individual-level and community-level practices can inform
each other.
Author Note: Aspects of this article have been presented at the 10th Trans-Tasman Community Psychology Conference, Sydney, April 2006,
and in an invited address at the 114th annual convention of the American Psychological Association, New Orleans, August 2006.
Partial support in the preparation of this paper was provided by mutliple grants from the US Department of Education, although
no endorsement is implied. 相似文献
888.
We examine whether two general dimensions of sociopolitical belief—right-wing authoritarianism (RWA) and social dominance orientation (SDO)—are rooted in insecure psychological attachment. Based on an undergraduate sample ( N = 255), we model the relations among attachment styles, general worldviews, RWA, and SDO. A structural equation model indicated that anxious attachment led to RWA but not SDO and that this effect was mediated by the belief that the world is a dangerous place. In contrast, avoidant attachment led to SDO but not RWA, and this effect was mediated by the belief that the world is an uncaring, competitive jungle in which people are motivated to maximize personal utility. We discuss the implications of these findings for the nature and origins of political conservatism. 相似文献
889.
Composite links and exploded likelihoods are powerful yet simple tools for specifying a wide range of latent variable models.
Applications considered include survival or duration models, models for rankings, small area estimation with census information,
models for ordinal responses, item response models with guessing, randomized response models, unfolding models, latent class
models with random effects, multilevel latent class models, models with log-normal latent variables, and zero-inflated Poisson
models with random effects. Some of the ideas are illustrated by estimating an unfolding model for attitudes to female work
participation.
We wish to thank The Research Council of Norway for a grant supporting our collaboration. 相似文献
890.
Takahiro Hoshino 《Psychometrika》2007,72(4):535-549
Due to the difficulty in achieving a random assignment, a quasi-experimental or observational study design is frequently used
in the behavioral and social sciences. If a nonrandom assignment depends on the covariates, multiple group structural equation
modeling, that includes the regression function of the dependent variables on the covariates that determine the assignment,
can provide reasonable estimates under the condition of correct specification of the regression function. However, it is usually
difficult to specify the correct regression function because the dimensions of the dependent variables and covariates are
typically large. Therefore, the propensity score adjustment methods have been proposed, since they do not require the specification
of the regression function and have been applied to several applied studies. However, these methods produce biased estimates
if the assignment mechanism is incorrectly specified. In order to make a more robust inference, it would be more useful to
develop an estimation method that integrates the regression approach with the propensity score methodology. In this study
we propose a doubly robust-type estimation method for marginal multiple group structural equation modeling. This method provides a consistent estimator
if either the regression function or the assignment mechanism is correctly specified. A simulation study indicates that the
proposed estimation method is more robust than the existing methods.
This research was partially supported by the Ministry of Education, Science, Sports and Culture, Grant-in-Aid for Young Scientists
(B), 187-30406. 相似文献