全文获取类型
收费全文 | 2416篇 |
免费 | 85篇 |
国内免费 | 13篇 |
出版年
2023年 | 24篇 |
2022年 | 55篇 |
2021年 | 57篇 |
2020年 | 81篇 |
2019年 | 86篇 |
2018年 | 196篇 |
2017年 | 175篇 |
2016年 | 152篇 |
2015年 | 74篇 |
2014年 | 69篇 |
2013年 | 278篇 |
2012年 | 112篇 |
2011年 | 102篇 |
2010年 | 99篇 |
2009年 | 90篇 |
2008年 | 139篇 |
2007年 | 94篇 |
2006年 | 80篇 |
2005年 | 87篇 |
2004年 | 57篇 |
2003年 | 45篇 |
2002年 | 29篇 |
2001年 | 22篇 |
2000年 | 24篇 |
1999年 | 24篇 |
1998年 | 13篇 |
1997年 | 18篇 |
1996年 | 8篇 |
1995年 | 12篇 |
1994年 | 14篇 |
1993年 | 12篇 |
1992年 | 12篇 |
1991年 | 8篇 |
1990年 | 7篇 |
1989年 | 8篇 |
1988年 | 8篇 |
1987年 | 11篇 |
1986年 | 5篇 |
1985年 | 9篇 |
1984年 | 5篇 |
1983年 | 4篇 |
1982年 | 18篇 |
1981年 | 18篇 |
1980年 | 9篇 |
1979年 | 6篇 |
1977年 | 7篇 |
1976年 | 4篇 |
1974年 | 9篇 |
1973年 | 5篇 |
1971年 | 4篇 |
排序方式: 共有2514条查询结果,搜索用时 15 毫秒
171.
Nazli Kibria Megan O’Leary Cara Bowman 《Journal of International Migration and Integration》2018,19(1):1-13
We explore immigration politics in the contemporary USA through analysis of the political framing of 2013 US Senate Bill 744, especially among its supporters. SB 744 is a bipartisan comprehensive immigration reform proposal that called for the largest overhaul of the immigration system in more than 25 years; it was passed in June 2013 by the US Senate but blocked in the House. Through analysis of the 2012–2013 textual content of the official websites and blogs of six US immigration lobby organizations from across the political spectrum, we offer a typology of political framings of comprehensive immigration reform. Drawing on popular anti-immigrant rhetoric, organizations with an agenda of immigration restriction and deterrence battled against the bill. On the other side, supporters of the bill ranged from business coalitions to immigrant rights groups, an assortment of interests that was reflected in the variety of arguments advanced in favor of the bill. Despite the far more fragmented character of pro-SB 744 discourse in comparison to that advanced by the opposition, our investigation suggests the ongoing and contested formation of a strategic pro-SB 744 framing that centered on the “good immigrant worker,” a “race-blind” trope that melds US nationalist narratives of immigration with an ethos of neoliberalism that upholds individual merit and market value to create a notion of “deservingness” that affirms the worth of immigrants as diligent workers. 相似文献
172.
Maria Cotelli Mauro Adenzato Valentina Cantoni Rosa Manenti Antonella Alberici Ivan Enrici Alberto Benussi Valentina Dell’Era Elisa Bonetta Alessandro Padovani Barbara Borroni 《Cognitive, affective & behavioral neuroscience》2018,18(6):1065-1075
Behavioural variant frontotemporal dementia (bvFTD) is a form of frontotemporal degeneration characterized by early changes in personality, emotional blunting, and/or loss of empathy. Recent research has highlighted that these features may be at least partially explained by impairments in the theory of mind (ToM; i.e., the ability to understand and predict other people’s behaviour by attributing independent mental states to them). The aim of this randomized, double-blind, placebo-controlled study was to test the hypothesis that transcranial direct current stimulation (tDCS) over the medial frontal cortex (MFC) selectively enhances communicative intention processing, a specific ToM ability. Using a single-session online design, we administered a ToM task that measures the ability to represent other people’s private and communicative intentions during active or sham tDCS to 16 bvFTD patients. To assess the impact of dementia on performance on the ToM task, we included 16 age-matched healthy volunteers who were asked to perform the entire experimental ToM task. BvFTD is characterized by an impairment in the comprehension of both communicative and private intentions relative to a healthy control group and by a disproportional impairment in communicative intention compared with private intention processing. Significant and selective accuracy improvement in the comprehension of communicative intentions after active stimulation was observed in patients with bvFTD. This is the first study that analyses ToM ability in patients with bvFTD using tDCS stimulation. Our findings could potentially contribute to the development of an effective, noninvasive brain stimulation treatment of ToM impairments in patients with bvFTD. 相似文献
173.
This essay is meant to shed light on a discourse that spans centuries and includes different voices. To be aware of such trans-textual resonances can add a level of historical understanding to the reading of philosophical texts. Specifically, we intend to demonstrate how the notion of the ineffable Dao 道, prominently expressed in the Daodejing 道德經, informs a long discourse on incongruent names (ming 名) in distinction to a mainstream paradigm that demands congruity between names and what they designate. Thereby, we trace the development of the idea of the ineffable Dao quite differently from modern mystical interpretations. We show how, in an early Chinese context, it first gives rise to a sociopolitical critique of the incongruity underlying socially constructed names in the Zhuangzi 莊子, then to a discourse on the incongruity between moral virtues and names in Xuanxue 玄學 philosophy, and eventually to Sengzhao’s 僧肇 claim that a perceived congruence of names with things does not entail actual congruence between names and reality. 相似文献
174.
Daniel?ChadbornView authors OrcID profile Stephen?ReysenEmail author 《Current psychology (New Brunswick, N.J.)》2018,37(3):625-631
Inspiration is a state, evoked from some source, which creates a form of approach motivation within an individual to work toward a goal, usually associated with a creative task or product. Previous research has explored inspiration as a trait which varies in the level of intensity and frequency that one is inspired by a given source. The present research views inspiration from a social identity perspective. In Study 1, we examined the associations between ingroup identification and both state and trait inspiration. In Study 2, we manipulated salient group identity and examined ingroup identification as a mediator of salient identity and felt inspiration. In Study 3, we manipulated outgroup comparisons to examine inspiration change. Combined, the present research offers insight into how one’s group influences how ingroup members are inspired. 相似文献
175.
Earlier studies have explored post-identification experiences of male BRCA1/2 mutation carriers, but more detailed knowledge of both their experiences and effects of identification as a carrier on their lives is required to improve genetic counseling. Thus, the aim of this study was to acquire deeper and broader insights into their experiences. Qualitative data were collected from theme-based interviews with 31 men carrying BRCA1/2 mutations in Finland, and analyzed using inductive content analysis. Three categories of the participants’ responses to identification as BRCA1/2 mutation carriers were identified (personal, offspring-related and related to other relatives), mainly concerning issues associated with cancer, hereditary transmission of their mutations, and life decisions. Although there were many neutral responses regarding the issues, there were also strong emotional reactions and cancer worries. Identification as a carrier also had several effects on participants’ lifestyles, including adoption of healthier and disease-preventing behavior, and social well-being, such as family planning and attitudes to life. The results provide detailed information about several aspects of male BRCA1/2 mutation carriers’ experiences, which could be used to develop a tentative model of tailored genetic counseling for them. 相似文献
176.
Amanda?M.?Willis Sian?K.?Smith Bettina?Meiser Mandy?L.?Ballinger David?M.?Thomas Martin?Tattersall the International Sarcoma Kindred Study the Kathleen Cuningham National Consortium for Research into Familial Breast Cancer Mary-Anne?Young 《Journal of genetic counseling》2018,27(5):1055-1066
Germline genomic testing is increasingly used in research to identify genetic causes of disease, including cancer. However, there is evidence that individuals who are notified of clinically actionable research findings have difficulty making informed decisions regarding uptake of genetic counseling for these findings. This study aimed to produce and pilot test a decision aid to assist participants in genomic research studies who are notified of clinically actionable research findings to make informed choices regarding uptake of genetic counseling. Development was guided by published literature, the International Patient Decision Aid Standards, and the expertise of a steering committee of clinicians, researchers, and consumers. Decision aid acceptability was assessed by self-report questionnaire. All 19 participants stated that the decision aid was easy to read, clearly presented, increased their understanding of the implications of taking up research findings, and would be helpful in decision-making. While low to moderate levels of distress/worry were reported after reading the booklet, a majority of participants also reported feeling reassured. All participants would recommend the booklet to others considering uptake of clinically actionable research findings. Results indicate the decision aid is acceptable to the target audience, with potential as a useful decision support tool for genomic research participants. 相似文献
177.
Paloma Alonso-Stuyck Juan José Zacarés Adoración Ferreres 《Journal of child and family studies》2018,27(5):1373-1383
Adolescence is critical for learning autonomous behavior; however, little research is available on the most appropriate balance of the emotional and behavioral dimensions of autonomy for psychosocial adjustment during this period. In this study we present a novel autonomy typology that combines both these aspects, which can be implemented as autonomy in decision-making and emotional separation. Specifically, examined age differences in emotional separation and autonomy in decision-making during adolescence. We also assessed differences in psychosocial adjustment associated with profiles of autonomy typology, sex, and age. The participants were 567 adolescents (296 males and 271 females), aged between 12 and 18 years (M?=?14.48; SD?=?1.69), recruited in Spanish high schools. Each participant filled out questionnaires on identity commitment, self-esteem, emotional separation and autonomy in decision-making. The results showed that the most advantageous autonomy profile is ‘autonomous in decisions’ (those showing low emotional separation combined with autonomous behavior in decisions) which was associated with higher levels of self-esteem and occupational and ideological identity commitment. In addition, we also concluded that the balance of autonomy affects adjustment throughout adolescence, although early adolescence may be an especially critical period. 相似文献
178.
179.
Aitana Fernández-Sogorb Cándido J. Inglés Ricardo Sanmartín Carolina Gonzálvez María Vicent y José Manuel García-Fernández 《International Journal of Clinical and Health Psychology》2018,18(3):264-272
Background/Objectives
This paper aimed to validate the Spanish version of scores of the Visual Analogue Scale for Anxiety-Revised (VAA-R) in child population, and to verify the existence of anxiety profiles and to relate them to school refusal.Method
The sample was made up of 911 Spanish students between 8 and 12 years old (M = 9.61, SD = 1.23). The measures used were the VAA-R and the School Refusal Assessment Scale-Revised for Children (SRAS-R-C).Results
Confirmatory factorial analysis supported the three-dimensional VAA-R structure: Anticipatory Anxiety (AA), School-based performance Anxiety (SA) and Generalized Anxiety (GA). The VAA-R has an adequate reliability and structural invariance across sex and age. No latent mean differences were found across sex, but did occur through age in AA and GA factors. Cluster analysis identified four child anxiety profiles: High Anxiety, High Anxiety School-type, Low Anxiety, and Moderate Anxiety, which differed significantly in all dimensions of school refusal.Conclusions
These findings may be useful for the assessment and treatment of anxious symptoms originated at school. 相似文献180.