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   20388篇
  免费   13篇
  20401篇
  2024年   2篇
  2023年   5篇
  2022年   1篇
  2021年   3篇
  2020年   4篇
  2019年   7篇
  2018年   3492篇
  2017年   2814篇
  2016年   2246篇
  2015年   186篇
  2014年   71篇
  2013年   66篇
  2012年   561篇
  2011年   2380篇
  2010年   2512篇
  2009年   1473篇
  2008年   1695篇
  2007年   2169篇
  2006年   22篇
  2005年   210篇
  2004年   160篇
  2003年   110篇
  2002年   59篇
  2001年   31篇
  2000年   51篇
  1999年   14篇
  1998年   20篇
  1997年   16篇
  1996年   7篇
  1994年   1篇
  1993年   1篇
  1991年   1篇
  1990年   8篇
  1989年   1篇
  1976年   1篇
  1969年   1篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
Death is a bad thing by virtue of its ability to frustrate the subjectively valuable projects that shape our identities and render our lives meaningful. While the presumption that immortality would necessarily result in boredom worse than death proves unwarranted, if the constraint of mortality is a necessary element for virtues, relationships, and motivation to pursue our life-projects, then death might nevertheless be a necessary evil. Mortal or immortal, it’s clear that the value of one’s life depends on its subjectively determined quality, rather than its quantity. Thus, it is imperative to live forever in the present, with flourishing always in mind.  相似文献   
102.
103.
This article focuses on the relevance of age vis-à-vis the body and sexuality in society. The author discusses how the symbolization of the body by differences of age displays an intertwining of social and sexuality issues. The central idea is that the constructions of age involve different notions of status related to the ageing body that are problematic in our sexuality because they form complex power relationships, creating boundaries, segmenting sexual expressions and committing individuals to spaces, identities and lifestyles. That is to say, as individuals use methods to capitalize on their sexuality, they produce varying meanings and ways of experiencing age. The notion of age-grading, an anthropological category to explain the connection between the notions of ageing body and society, will be discussed with the aim of clarifying how age shapes our sexuality. This paper is meant to encourage further debate, not to provide a finished discussion.  相似文献   
104.
Diagnosis and treatment of cancer has been associated with both posttraumatic stress disorder (PTSD) symptoms and posttraumatic growth (PTG). This cross-sectional study sought to assess the frequency, common predictors, and interrelationships of PTSD symptoms and PTG in breast cancer survivors (n = 65). In this sample, symptoms of PTSD and reports of PTG were common and were not significantly related to one another. Greater social constraints on talking about breast cancer and perception of cancer as a traumatic stressor were associated with greater PTSD symptomatology. Younger age and perception of cancer as a traumatic stressor were associated with greater PTG. Findings suggest the central role of subjective appraisal in adjustment to cancer. Psychosocial interventions should be sensitive to the potential for PTG, both in treatment design and in assessment of outcomes.  相似文献   
105.
According to Roy Sorensen [Philosophical Studies 100 (2000) 175–191] an object cannot differ aesthetically from its mirror image. On his view, mirror-reversing an object – changing its left/right orientation – cannot bring about any aesthetic change. However, in arguing for this thesis Sorensen assumes that aesthetic properties supervene on intrinsic properties alone. This is a highly controversial assumption and nothing is offered in its support. Moreover, a plausible weakening of the assumption does not improve the argument. Finally, Sorensen’s second argument is shown to be formally flawed. As a result, the case for the aesthetic irrelevancy of orientation seems still open.  相似文献   
106.
A Bayesian Semiparametric Latent Variable Model for Mixed Responses   总被引:1,自引:0,他引:1  
In this paper we introduce a latent variable model (LVM) for mixed ordinal and continuous responses, where covariate effects on the continuous latent variables are modelled through a flexible semiparametric Gaussian regression model. We extend existing LVMs with the usual linear covariate effects by including nonparametric components for nonlinear effects of continuous covariates and interactions with other covariates as well as spatial effects. Full Bayesian modelling is based on penalized spline and Markov random field priors and is performed by computationally efficient Markov chain Monte Carlo (MCMC) methods. We apply our approach to a German social science survey which motivated our methodological development. We thank the editor and the referees for their constructive and helpful comments, leading to substantial improvements of a first version, and Sven Steinert for computational assistance. Partial financial support from the SFB 386 “Statistical Analysis of Discrete Structures” is also acknowledged.  相似文献   
107.
This paper engages Freud’s relation to Kant, with specific reference to each theorist’s articulation of the interconnections between ethics and religion. I argue that there is in fact a constructive approach to ethics and religion in Freud’s thought, and that this approach can be better understood by examining it in relation to Kant’s formulations on these topics. Freud’s thinking about religion and ethics participates in the Enlightenment heritage, with its emphasis on autonomy and rationality, of which Kant’s model of practical reason is in many ways exemplary. At the same time, Freud advances Kantian thinking in certain important respects; his work offers a more somatically, socially, and historically grounded approach to the formation of rational and ethical capacities, and hence makes it more compatible with contemporary concerns and orientations that eschew the pitfalls of ahistorical idealist orientations.  相似文献   
108.
During recent decades, new assisted reproductive technologies (ARTs) have improved significantly, but their ethical, social, psychological, religious and legal aspects are blurred and need further research. New techniques using donor sperm or egg allow for third party involvement in the procreation process, which has created new hope for infertile couples. The corresponding clinical applications also raise new religious questions, which require appropriate interpretation in order to make their use possible, particularly in religious communities. In this paper, we discuss the most important ethical issues and the Islamic view of third party reproduction. Likewise, the current method of third party reproduction in Iran will be described, and the advantages and disadvantages of the Act of Embryo Donation to Infertile Spouses will be stated. Consideration of this outlook could generate inspiration in many Islamic countries.  相似文献   
109.
We examined the ability of domestic dogs to choose the larger versus smaller quantity of food in two experiments. In experiment 1, we investigated the ability of 29 dogs (results from 18 dogs were used in the data analysis) to discriminate between two quantities of food presented in eight different combinations. Choices were simultaneously presented and visually available at the time of choice. Overall, subjects chose the larger quantity more often than the smaller quantity, but they found numerically close comparisons more difficult. In experiment 2, we tested two dogs from experiment 1 under three conditions. In condition 1, we used similar methods from experiment 1 and tested the dogs multiple times on the eight combinations from experiment 1 plus one additional combination. In conditions 2 and 3, the food was visually unavailable to the subjects at the time of choice, but in condition 2, food choices were viewed simultaneously before being made visually unavailable, and in condition 3, they were viewed successively. In these last two conditions, and especially in condition 3, the dogs had to keep track of quantities mentally in order to choose optimally. Subjects still chose the larger quantity more often than the smaller quantity when the food was not simultaneously visible at the time of choice. Olfactory cues and inadvertent cuing by the experimenter were excluded as mechanisms for choosing larger quantities. The results suggest that, like apes tested on similar tasks, some dogs can form internal representations and make mental comparisons of quantity.  相似文献   
110.
We assessed parents’ beliefs about treatment credibility and effectiveness and examined the influence of these beliefs on subsequent treatment participation. Seventy-six parents completed the Credibility/Expectancies Questionnaire—Parent Version (CEQ-P), and subsequently participated in treatment for their child's clinically referred conduct problems. The key findings were that: (a) the CEQ-P is composed of two components that measure parents’ treatment credibility and expectancies; (b) the total scale and each component are internally consistent and have strong test-retest reliability; (c) scores on the CEQ-P are significantly associated with scores on a measure of parent motivation for treatment, supporting the construct validity of this measure; and (d) scores on the CEQ-P at the first clinic visit significantly predict subsequent adherence to treatment procedures above and beyond demographic variables and parent motivation for treatment. This study provides an efficient and psychometrically sound measure of parent beliefs about treatment and demonstrates the importance of such beliefs for subsequent treatment adherence.  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