全文获取类型
收费全文 | 6545篇 |
免费 | 330篇 |
国内免费 | 5篇 |
出版年
2023年 | 63篇 |
2022年 | 50篇 |
2021年 | 78篇 |
2020年 | 141篇 |
2019年 | 202篇 |
2018年 | 249篇 |
2017年 | 258篇 |
2016年 | 247篇 |
2015年 | 204篇 |
2014年 | 216篇 |
2013年 | 721篇 |
2012年 | 352篇 |
2011年 | 391篇 |
2010年 | 244篇 |
2009年 | 244篇 |
2008年 | 301篇 |
2007年 | 322篇 |
2006年 | 251篇 |
2005年 | 223篇 |
2004年 | 206篇 |
2003年 | 210篇 |
2002年 | 170篇 |
2001年 | 92篇 |
2000年 | 70篇 |
1999年 | 64篇 |
1998年 | 75篇 |
1997年 | 66篇 |
1996年 | 70篇 |
1995年 | 52篇 |
1994年 | 64篇 |
1993年 | 46篇 |
1992年 | 52篇 |
1991年 | 48篇 |
1990年 | 55篇 |
1989年 | 31篇 |
1988年 | 36篇 |
1987年 | 35篇 |
1986年 | 32篇 |
1985年 | 45篇 |
1984年 | 42篇 |
1982年 | 50篇 |
1981年 | 32篇 |
1980年 | 45篇 |
1979年 | 38篇 |
1978年 | 44篇 |
1977年 | 46篇 |
1976年 | 42篇 |
1975年 | 35篇 |
1974年 | 27篇 |
1973年 | 34篇 |
排序方式: 共有6880条查询结果,搜索用时 31 毫秒
961.
Daniel J. Franklin Stephen Grossberg 《Cognitive, affective & behavioral neuroscience》2017,17(1):24-76
How do the hippocampus and amygdala interact with thalamocortical systems to regulate cognitive and cognitive-emotional learning? Why do lesions of thalamus, amygdala, hippocampus, and cortex have differential effects depending on the phase of learning when they occur? In particular, why is the hippocampus typically needed for trace conditioning, but not delay conditioning, and what do the exceptions reveal? Why do amygdala lesions made before or immediately after training decelerate conditioning while those made later do not? Why do thalamic or sensory cortical lesions degrade trace conditioning more than delay conditioning? Why do hippocampal lesions during trace conditioning experiments degrade recent but not temporally remote learning? Why do orbitofrontal cortical lesions degrade temporally remote but not recent or post-lesion learning? How is temporally graded amnesia caused by ablation of prefrontal cortex after memory consolidation? How are attention and consciousness linked during conditioning? How do neurotrophins, notably brain-derived neurotrophic factor (BDNF), influence memory formation and consolidation? Is there a common output path for learned performance? A neural model proposes a unified answer to these questions that overcome problems of alternative memory models. 相似文献
962.
963.
Jens U. Berli Luis Capitán Daniel Simon Rachel Bluebond-Langner Eric Plemons Shane D. Morrison 《International Journal of Transgenderism》2017,18(3):264-270
Facial gender confirmation surgery (FGCS), also popularly known and referred to in the scientific literature as facial feminization surgery (FFS), was previously treated as a collection of aesthetic procedures complementing other aspects of gender-confirming surgery. Recent literature on quality-of-life outcomes following FGCS has supported the substantial impact these procedures have on overall well-being and reduction of psychosocial sequelae in patients. The World Professional Association for Transgender Health Standards of Care, Version 7 (WPATH SOC 7), did not deem FGCS a medical necessity. Based on these new studies, increasing evidence points to the need to include FGCS among medically necessary gender-confirming surgeries, though more-prospective studies are needed. Updates to the WPATH SOC 8 are proposed based on available quality of life studies. 相似文献
964.
Krystyna Adams Jeremy Snyder Valorie A. Crooks Rory Johnston 《Philosophy, ethics, and humanities in medicine : PEHM》2017,12(1):4
Background
Medical tourism, the practice of persons intentionally travelling across international boundaries to access medical care, has drawn increasing attention from researchers, particularly in relation to potential ethical concerns of this practice. Researchers have expressed concern for potential negative impacts to individual safety, public health within both countries of origin for medical tourists and destination countries, and global health equity. However, these ethical concerns are not discussed within the sources of information commonly provided to medical tourists, and as such, medical tourists may not be aware of these concerns when engaging in medical tourism. This paper describes the methodology utilized to develop an information sheet intended to be disseminated to Canadian medical tourists to encourage contemplation and further public discussion of the ethical concerns in medical tourism.Methods
The methodology for developing the information sheet drew on an iterative process to consider stakeholder feedback on the content and use of the information sheet as it might inform prospective medical tourists’ decision making. This methodology includes a literature review as well as formative research with Canadian public health professionals and former medical tourists.Results
The final information sheet underwent numerous revisions throughout the formative research process according to feedback from medical tourism stakeholders. These revisions focused primarily on making the information sheet concise with points that encourage individuals considering travelling for medical tourism to do further research regarding their safety both within the destination country, while travelling, and once returning to Canada, and the potential impacts of their trip on third parties. This methodology may be replicated for the development of information sheets intending to communicate ethical concerns of other practices to providers or consumers of a certain service.965.
Jana Ptáčková Silvie Lišková Aleš Kuběna Daniel Frynta 《European Journal of Developmental Psychology》2017,14(1):16-31
This study explores aesthetic preferences towards boa and python species among pre-school children and adults, and compares the ratings between the two groups. A set of snake photographs was presented (56 species) to children and adult respondents. The respondents were asked to select the five most preferred and five least preferred species. The children’s agreement on which species were ‘beautiful’ and which were ‘ugly’ was statistically significant and a positive relationship between the mean ranks provided by children and adults was also found (r = .54, P < .001). Children preferred species with thick necks and inconspicuous heads, usually small species, harmless to children. Large pythons probably posed more danger to children than they did to adults during human evolution in African savannas and therefore we hypothesize that young children’s aesthetic preferences were shaped by natural selection through interactions with dangerous snakes. 相似文献
966.
The article deals with the question of how aggregated data which allow for generalizable insights can be generated from single-case based qualitative investigations. Thereby, two central challenges of qualitative social research are outlined: First, researchers must ensure that the single-case data can be aggregated and condensed so that new collective structures can be detected. Second, they must apply methods and practices to allow for the generalization of the results beyond the specific study. In the following, we demonstrate how and under what conditions these challenges can be addressed in research practice. To this end, the research process of the construction of an empirically based typology is described. A qualitative study, conducted within the framework of the Luxembourg Youth Report, is used to illustrate this process. Specifically, strategies are presented which increase the likelihood of generalizability or transferability of the results, while also highlighting their limitations. 相似文献
967.
Daniel Kupermann 《American journal of psychoanalysis》2017,77(3):255-264
This work intends to present aspects of clinical work in which the Ferenczian proposition of neo-catharsis, as re-emergence of repressed affective experience in the transference and countertransference presents itself as a challenge to the analyst, since a standard, classical technical approach results in repetition of past trauma with the analyst as perpetrator. A deviation from standard technique—free association, the principle of abstinence in transference, and interpretation—involving empathic listening, and affective sharing contains the patient’s suffering. The re-emergence of suffering and terror, which represents the repressed affect associated with the traumatic past, but with a sympathetic and sensitive analyst, sharing their experience, is crucial in working through and healing. 相似文献
968.
Adolescent adaptation before,during and in the aftermath of the Great Recession in the USA
下载免费PDF全文
![点击此处可从《International journal of psychology》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Monica Kirkpatrick Johnson Jeremy Staff Megan E. Patrick John E. Schulenberg 《International journal of psychology》2017,52(1):9-18
This study examines the impact of the “Great Recession” (from December 2007 to June 2009) on 8th and 10th graders in the USA, using annual nationally representative data from the Monitoring the Future study. Historical changes in youth adjustment (self‐esteem, depressed mood, risk taking, aggression and property crime), school achievement (grade point average [GPA], time spent on homework and educational expectations) and structured and unstructured activities (volunteering, employment, sports and evenings out for fun) were examined between 1991 and 2014. Overall, there were only slight changes in mean levels of adjustment, achievement and most youth activities. However, the percentage of youth working during the school year did decline during the Great Recession. Several longer‐term trends were also evident, though not directly tied to the Great Recession. These include an increase in GPA, a decrease in time spent on homework, rising educational expectations and more time spent volunteering. Future work should assess how the shift to unpaid work activities (e.g. volunteering and internships) among youth is impacting the transition from school to work in the contemporary economy, and whether the Great Recession had deleterious impacts for younger children or among youth whose parents lost work or had their homes foreclosed. 相似文献
969.
Daniel Montoya Rosales 《International review of missions》2017,106(1):59-68
The mission that God has given is one of proclamation, liturgy, deaconry, education, and stewardship. This is why it is necessary to develop new models for mission based on national work, where we review our biblical and theological discourse, our ecclesiology, the structures that limit our missionary activity, the models of theological education, our traditions and creation of liturgy, and our conceptual models and practice in ministry. Considering this, the World Council of Churches' document Together towards Life: Mission and Evangelism in Changing Landscapes offers interesting guidelines for teaching and practicing mission, which the author analyzes in the ecumenical Cuban context, and in particular in that of the Evangelical Theological Seminary of Matanzas, Cuba. 相似文献
970.
Authors deal with practice of nursing care provided to Muslim clients in the Czech Republic. They use the explorative research design. By means of analyses of 21 semi-structured interviews with important social actors in the area of health care (spa resorts and hospitals). The study shows that Muslims are not homogeneous in their behaviour in the field of health care. In the spa environment, three interpretation perspectives can be found: the economic interpretation of a Muslim as the source of income of the Czech spa industry, which faces economic problems, the cultural interpretation developed within the spas (the experience capital of the staff and other clients), and the (a) cultural interpretation of Muslims and Islam brought to spas from the outside (the public opinion). However, in the area of hospitals, Muslims are not separated from the remaining categories of students; Muslim patients represent a small group of persons, and their treatment being conditioned by the distance or closeness of cultures, language skills, adaptation, and experiences with treatment in the Czech environment as perceived by the staff. 相似文献