全文获取类型
收费全文 | 51976篇 |
免费 | 2077篇 |
国内免费 | 30篇 |
专业分类
54083篇 |
出版年
2020年 | 581篇 |
2019年 | 733篇 |
2018年 | 1055篇 |
2017年 | 1052篇 |
2016年 | 1107篇 |
2015年 | 738篇 |
2014年 | 908篇 |
2013年 | 4508篇 |
2012年 | 1644篇 |
2011年 | 1793篇 |
2010年 | 1042篇 |
2009年 | 1060篇 |
2008年 | 1626篇 |
2007年 | 1603篇 |
2006年 | 1411篇 |
2005年 | 1282篇 |
2004年 | 1255篇 |
2003年 | 1138篇 |
2002年 | 1180篇 |
2001年 | 1747篇 |
2000年 | 1648篇 |
1999年 | 1262篇 |
1998年 | 662篇 |
1997年 | 569篇 |
1996年 | 512篇 |
1995年 | 516篇 |
1994年 | 494篇 |
1993年 | 515篇 |
1992年 | 1008篇 |
1991年 | 953篇 |
1990年 | 939篇 |
1989年 | 849篇 |
1988年 | 812篇 |
1987年 | 800篇 |
1986年 | 803篇 |
1985年 | 853篇 |
1984年 | 667篇 |
1983年 | 576篇 |
1982年 | 469篇 |
1979年 | 653篇 |
1978年 | 485篇 |
1976年 | 446篇 |
1975年 | 589篇 |
1974年 | 619篇 |
1973年 | 594篇 |
1972年 | 539篇 |
1971年 | 473篇 |
1968年 | 539篇 |
1967年 | 540篇 |
1966年 | 475篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
21.
22.
23.
24.
Carol VanZile-Tamsen Maria Testa Lisa L Harlow Jennifer A Livingston 《Health psychology》2006,25(2):249-254
The current study was designed to gain a better understanding of the nature of the relationship between substance use and sexual risk taking within a community sample of women (N = 1,004). Using confirmatory factor analysis, the authors examined the factor structure of sexual risk behaviors and substance use to determine whether they are best conceptualized as domains underlying a single, higher order, risk-taking propensity. A 2 higher order factor model (sexual risk behavior and substance use) provided the best fit to the data, suggesting that these 2 general risk domains are correlated but independent factors. Sensation seeking had large general direct effects on the 2 risk domains and large indirect effects on the 4 first-order factors and the individual indicators. Negative affect had smaller, yet still significant, effects. Impulsivity and anxiety were unrelated to sexual health risk domains. 相似文献
25.
Susan S Girdler Jane Leserman Robertas Bunevicius Rebecca Klatzkin Cort A Pedersen Kathleen C Light 《Health psychology》2007,26(2):201-213
OBJECTIVE: To examine dysregulation in biological measures associated with histories of abuse in women and whether women with premenstrual dysphoric disorder (PMDD) differ in their dysregulation. DESIGN: Twenty-five women meeting prospective criteria for PMDD and 42 non-PMDD controls underwent structured interview to determine abuse histories and lifetime Axis I diagnoses, excluding those with current Axis I disorders or using medications. MAJOR OUTCOME MEASURES: Plasma cortisol and norepinephrine (NE), heart rate (HR), blood pressure (BP), and vascular resistance index (VRI) were assessed at rest and in response to mental stress. RESULTS: A greater proportion of PMDD women had prior abuse compared with non-PMDD women. Regardless of PMDD status, all abused women had lower plasma NE and higher HRs and tended to have lower plasma cortisol at rest and during stress. Abused women also reported more severe daily emotional and physical symptoms. Greater VRI and BP at rest and during stress were seen only in PMDD women with abuse. CONCLUSION: There is persistent dysregulation in stress-responsive systems in all abused women that cannot be accounted for by current psychiatric illness or medications, and PMDD women may be differentially more vulnerable to the impact of abuse on measures reflecting alpha-adrenergic receptor function. 相似文献
26.
27.
28.
Michael A. Signer 《Jewish History》2008,22(1-2):115-137
Elka Klein’s writings have illuminated reciprocal and distinctive characteristics of the social and intellectual lives of Jewry in Iberia and by comparison Northern Europe during the High Middle Ages. This article honors her insights, by comparing the development of biblical hermeneutics at the Abbey of St. Victor in Paris and in the writings of Abraham ibn Ezra. Hugh of St. Victor’s introduction to the study of Scripture, Didascalicon, provides a program for the individual student to integrate all branches of human knowledge into the search for Divine Wisdom that may be found only in Scripture. The innovation in Hugh’s program is the emphasis on the “literal” or “historical” sense of Scripture as the solid basis for the development of theological study. Grammar and rhetoric were stepping stones that led the young theologians to higher levels of Divine Wisdom. The introduction to Abraham ibn Ezra’s commentary on the Pentateuch constitutes a parallel point of orientation for twelfth-century Jewish readers. A close reading of ibn Ezra’s prologue maps the hermeneutical approaches that different communities – Christian, rabbinic Jewish, and Karaite – utilized in their expositions of the Pentateuch. After critiquing each community, ibn Ezra offers his own approach that builds an overall framework for correct interpretation on the foundation of grammar and the rabbinic oral tradition. From this perspective, the article demonstrates that during this period Jews and Christians, both in Iberia and Northern Europe, focused on harmonizing reason and revelation. Both communities used grammar as the primary criterion for evaluating the accumulation of traditional sources. Both approaches intended to develop students, who were capable of understanding that “reason is the angel that mediates between God and humanity.” 相似文献
29.
Using both cross-sectional and longitudinal data spanning a decade, this article analyzes how dietary behavior of household children and adults (N = 576 households) was affected by the Stanford Five-City Project (FCP). Tests of a three-part, cumulative model of bidirectional influences within the family, which conceptualizes household members as sources of influence on each other and subject to influence by an external agent, were supported. Children and adults were influenced by both each other and the FCP campaign in changing and maintaining health behaviors. This article demonstrates that public health campaigns can be made more effective if they conceptualize both children and adults as potential sources of influence. The long-term effectiveness of such efforts can be enhanced by encouraging families, as opposed to individuals, to change health behaviors. 相似文献
30.
Collin L. Davidson MS LaRicka R. Wingate PhD Kathy A. Rasmussen BA Meredith L. Slish BA 《Suicide & life-threatening behavior》2009,39(5):499-507
The current study hypothesized that (1) hope would negatively predict burdensomeness, thwarted belongingness, and acquired capability to enact lethal injury; (2) hope would negatively predict suicidal ideation; and (3) the interpersonal suicide risk factors would predict suicidal ideation. Results indicated that hope negatively predicted burdensomeness and thwarted belongingness, but positively predicted acquired capability to enact suicide. Contrary to our second hypothesis, hope did not predict suicidal ideation, but interpersonal risk factors for suicide predicted suicidal ideation. Results are discussed in terms of implications for hope theory and Joiner's (2005) interpersonal risk factors for suicide, and for clinical practice. 相似文献