全文获取类型
收费全文 | 881篇 |
免费 | 23篇 |
国内免费 | 7篇 |
出版年
2020年 | 11篇 |
2019年 | 11篇 |
2018年 | 16篇 |
2017年 | 9篇 |
2016年 | 18篇 |
2015年 | 7篇 |
2014年 | 10篇 |
2013年 | 58篇 |
2012年 | 21篇 |
2011年 | 15篇 |
2010年 | 14篇 |
2009年 | 12篇 |
2008年 | 12篇 |
2007年 | 24篇 |
2006年 | 18篇 |
2005年 | 12篇 |
2004年 | 20篇 |
2003年 | 10篇 |
2002年 | 20篇 |
2001年 | 35篇 |
2000年 | 47篇 |
1999年 | 20篇 |
1998年 | 13篇 |
1997年 | 8篇 |
1992年 | 19篇 |
1991年 | 15篇 |
1990年 | 34篇 |
1989年 | 23篇 |
1988年 | 11篇 |
1987年 | 23篇 |
1986年 | 32篇 |
1985年 | 21篇 |
1984年 | 21篇 |
1983年 | 16篇 |
1982年 | 8篇 |
1981年 | 10篇 |
1980年 | 8篇 |
1979年 | 12篇 |
1978年 | 10篇 |
1976年 | 8篇 |
1975年 | 16篇 |
1974年 | 15篇 |
1973年 | 20篇 |
1972年 | 14篇 |
1971年 | 17篇 |
1970年 | 15篇 |
1969年 | 7篇 |
1968年 | 9篇 |
1967年 | 10篇 |
1966年 | 7篇 |
排序方式: 共有911条查询结果,搜索用时 31 毫秒
101.
In the present paper we face the problem of estimating cell probabilities in the case of a two-dimensional contingency table from a predictive point of view. The solution is given by a double stochastic process. The first subprocess, the unobservable one, is supposed to be exchangeable and invariant. For the second subprocess, the observable one, we suppose it is independent conditional on the first one. 相似文献
102.
103.
The present study reports a two-year follow-up of psychological effects of predictive testing for Huntington's disease. Questionnaires assessing depression, general health, well-being, self injurious behavior, life satisfaction, and lifestyle were completed by 35 carriers and 58 non-carriers before the predictive test, and 2, 6, 12, and 24 months afterwards. Both carriers and non-carriers showed high suicidal ideation before the predictive testing. Depression scores and frequency of suicidal thoughts increased for carriers, compared to non-carriers, over time. There were no differences regarding life satisfaction or life style between carriers and non-carriers. Predictive testing was beneficial in reducing overall ill-health symptoms and increasing well-being for those initially expressing concern about Huntington's disease. The importance of assessing suicidal ideation and of continuing to provide adequate support is emphasized. 相似文献
104.
Adams G Fryberg SA Garcia DM Delgado-Torres EU 《Cultural diversity & ethnic minority psychology》2006,12(3):493-508
In a questionnaire study among 124 students at Haskell Indian Nations University, the authors investigated the hypothesis that engagement with Indigenous identity--assessed along three dimensions including degree (identification scale), content (panethnic or tribal nation), and context (reservation or nonreservation)--can serve as a psychological resource for well-being and liberation from oppression. Consistent with this hypothesis, degree of identification was positively correlated with community efficacy and perception of racism. Apparently inconsistent with this hypothesis, degree of identification among students who had resided on a reservation was negatively correlated with the Social Self-Esteem subscale of the Current Thoughts Scale. Rather than evidence against the identity-as-resource hypothesis, this pattern may reflect the cultural grounding of self-esteem and tools designed to measure it. 相似文献
105.
The movements of newborns have been thoroughly studied in terms of reflexes, muscle synergies, leg coordination, and target-directed
arm/hand movements. Since these approaches have concentrated mainly on separate accomplishments, there has remained a clear
need for more integrated investigations. Here, we report an inquiry in which we explicitly concentrated on taking such a perspective
and, additionally, were guided by the methodological concept of home base behavior, which Ilan Golani developed for studies
of exploratory behavior in animals. Methods from nonlinear dynamics, such as symbolic dynamics and recurrence plot analyses
of kinematic data received from audiovisual newborn recordings, yielded new insights into the spatial and temporal organization
of limb movements. In the framework of home base behavior, our approach uncovered a novel reference system of spontaneous
newborn movements. 相似文献
106.
Activation studies in patients with aphasia due to stroke or tumours in the dominant hemisphere have revealed effects of disinhibition in ipsilateral perilesional and in contralateral homotopic cortical regions, referred to as collateral and transcallosal disinhibition. These findings were supported by studies with selective disturbance of cortical areas by repetitive transcranial magnetic stimulation (rTMS) in healthy volunteers and in patients with focal brain lesions. Both, collateral as well as transcallosal disinhibition might be relevant for the compensation of lesions within a functional network. From these data a hierarchical organization of recovery of aphasia after stroke and of compensation of language defects due to brain tumours can be deduced, by which the reactivation of undamaged network areas of the ipsilateral hemisphere usually lead to better outcome than the involvement of homotopic contra-lateral regions. rTMS can be used to identify areas relevant for speech production and might play a role in treatment strategies targeted at modulating the activity of contralateral homotopic areas of the functional network which might interfere with language recovery. 相似文献
107.
108.
109.
110.
Schwarzer R Richert J Kreausukon P Remme L Wiedemann AU Reuter T 《International journal of psychology》2010,45(4):260-268
A first step towards the improvement of daily dietary behaviors is forming an intention to change one's nutrition. However, an intention by itself is not sufficient for successful action. Rather, to translate intentions into behavior, careful planning is recommended. Thus, planning constitutes a mediator between the intention and the behavior. However, if a person lacks self-efficacy, this mediation might fail. Previous research in Costa Rica and South Korea has identified perceived self-efficacy as a moderator of the intention-planning-behavior relationship. To examine further the moderator role of self-efficacy, two additional studies were designed in Thailand and Germany. Study 1 surveyed 1718 Thai university students in terms of a low-fat diet; Study 2 surveyed 1140 German internet users in terms of their fruit and vegetable consumption at two measurement points in time, 6 months apart. Intentions served as predictor, planning as mediator, self-efficacy as moderator, and behaviors as outcomes. First, intentions were translated into nutrition behaviors by planning. Second, self-efficacy moderated this mediation in both studies: The strength of the mediated effect increased along with levels of self-efficacy, even when accounting for baseline behaviors. For planning to mediate the intention-behavior relation, people must not harbor self-doubts. If they lack self-efficacy, intentions are not well translated into nutrition behavior through planning. 相似文献