全文获取类型
收费全文 | 390篇 |
免费 | 14篇 |
专业分类
404篇 |
出版年
2023年 | 2篇 |
2022年 | 3篇 |
2020年 | 5篇 |
2019年 | 7篇 |
2018年 | 14篇 |
2017年 | 12篇 |
2016年 | 10篇 |
2015年 | 10篇 |
2014年 | 6篇 |
2013年 | 48篇 |
2012年 | 13篇 |
2011年 | 18篇 |
2010年 | 11篇 |
2009年 | 9篇 |
2008年 | 13篇 |
2007年 | 14篇 |
2006年 | 19篇 |
2005年 | 15篇 |
2004年 | 18篇 |
2003年 | 17篇 |
2002年 | 12篇 |
2001年 | 6篇 |
2000年 | 14篇 |
1999年 | 8篇 |
1998年 | 6篇 |
1997年 | 5篇 |
1996年 | 4篇 |
1994年 | 4篇 |
1993年 | 5篇 |
1992年 | 6篇 |
1991年 | 6篇 |
1989年 | 5篇 |
1988年 | 3篇 |
1987年 | 5篇 |
1986年 | 2篇 |
1985年 | 5篇 |
1984年 | 6篇 |
1983年 | 2篇 |
1982年 | 6篇 |
1981年 | 3篇 |
1980年 | 3篇 |
1979年 | 7篇 |
1977年 | 2篇 |
1976年 | 2篇 |
1975年 | 1篇 |
1974年 | 5篇 |
1973年 | 2篇 |
1972年 | 1篇 |
1968年 | 1篇 |
1951年 | 1篇 |
排序方式: 共有404条查询结果,搜索用时 0 毫秒
51.
Michael C. Freed Laura A. Novak William D. S. Killgore Sheila A. M. Rauch Tracey P. Koehlmoos J. P. Ginsberg 《The American journal of bioethics : AJOB》2016,16(8):30-37
Institutional review board (IRB) delays may hinder the successful completion of federally funded research in the U.S. military. When this happens, time-sensitive, mission-relevant questions go unanswered. Research participants face unnecessary burdens and risks if delays squeeze recruitment timelines, resulting in inadequate sample sizes for definitive analyses. More broadly, military members are exposed to untested or undertested interventions, implemented by well-intentioned leaders who bypass the research process altogether. To illustrate, we offer two case examples. We posit that IRB delays often appear in the service of managing institutional risk, rather than protecting research participants. Regulators may see more risk associated with moving quickly than risk related to delay, choosing to err on the side of bureaucracy. The authors of this article, all of whom are military-funded researchers, government stakeholders, and/or human subject protection experts, offer feasible recommendations to improve the IRB system and, ultimately, research within military, veteran, and civilian populations. 相似文献
52.
53.
54.
Aimee L. Lucas Adam Tarlecki Kellie Van Beck Casey Lipton Arindam RoyChoudhury Elana Levinson Sheila Kumar Wendy K. Chung Harold Frucht Jeanine M. Genkinger 《Journal of genetic counseling》2017,26(4):806-813
Pancreatic ductal adenocarcinoma (PDAC) is a leading cause of cancer death; approximately 5–10% of PDAC is hereditary. Self-administered health history questionnaires (HHQs) may provide a low-cost method to detail family history (FH) of malignancy. Pancreas Center patients were asked to enroll in a registry; 149 with PDAC completed a HHQ which included FH data. Patients with FH of PDAC, or concern for inherited PDAC syndrome, were separately evaluated in a Prevention Program and additionally met with a genetic counselor (GC) to assess PDAC risk (n?=?61). FH obtained through GC and HHQ were compared using Wilcoxon signed-rank sum and generalized linear mixed models with Poisson distribution. Agreement between GC and HHQ risk-assessment was assessed using kappa (κ) statistic. In the Prevention Program, HHQ was as precise in detecting FH of cancer as the GC (all p?>?0.05). GC and HHQ demonstrated substantial agreement in risk-stratification of the Prevention Program cohort (κ?=?0.73, 95% CI 0.59–0.87.) The sensitivity of the HHQ to detect a patient at elevated risk (i.e., moderate- or high-risk) of PDAC, compared to GC, was 82.9% (95% CI 67.3–92.3%) with a specificity of 95% (95% CI 73.1–99.7%). However, seven patients who were classified as average-risk by the HHQ were found to be at an elevated-risk of PDAC by the GC. In the PDAC cohort, 30/149 (20.1%) reported at least one first-degree relative (FDR) with PDAC. The limited sensitivity of the HHQ to detect patients at elevated risk of PDAC in the Prevention Program cohort suggests that a GC adds value in risk-assessment in this population. The HHQ may offer an opportunity to identify high-risk patients in a PDAC population. 相似文献
55.
Maton KI Wimms HE Grant SK Wittig MA Rogers MR Vasquez MJ 《Cultural diversity & ethnic minority psychology》2011,17(1):68-78
A national, Web-based survey of 1,219 African American, Latina/o, Asian American, and European American psychology graduate students revealed both similarities and differences in experiences and perspectives. Mentoring was found to be the strongest predictor of satisfaction across groups. Academic supports and barriers, along with perceptions of diversity within the academic environment, were also important predictors of satisfaction. Students of color perceived less fairness of representation of their ethnic group within psychology than European American students, and a greater linkage between aspects of the graduate school experience and their ethnicity. Limitations of the study and implications for future research and action are discussed. 相似文献
56.
Sheila Croucher 《Journal of International Migration and Integration》2011,12(2):113-131
This paper reverses the conventional migration lens to focus on the understudied case of a growing population of Americans in Canada. What motivates these native-born US citizens to migrate; how do they adapt to life north of the 49th parallel; what is the nature of the ties they maintain to their US homeland? Drawing on fieldwork in Ottawa, Toronto, and Vancouver, this paper identifies similarities between Americans and other migrants, but also points to a pervasive attitude of nonchalance as a notable difference. Examining migrants of relative privilege in North American helps refine theory rooted in assumptions of marginalization and advances analyses of continental integration. 相似文献
57.
Richard A. Young Sheila K. Marshall Kristen Foulkes Carla Haber Celine S.M. Lee Carey Penner Hajara Rostram 《Journal of Vocational Behavior》2011,79(2):325-333
Transition is important in the career literature as it identifies times at which people are often likely to consult counselors about issues for which they need help. However, the counseling literature has not provided a conceptualization of, or research on, the joint, goal-directed actions and projects of the counselor and the client, which explicitly reflect the goal-directed nature of the transition itself. To address this issue, 12 counseling dyads, representing 37 counseling sessions, were studied. In these dyads, counseling was observed as the joint, goal-directed action between professional counselors and youth who sought assistance with their transition to adulthood. The data were collected using the action-project method. The counseling sessions were video-recorded, then immediately played back for the counselor and client separately to gather their recalled thoughts and feeling during counseling. Detailed qualitative analysis of the data set addressed the research question, “What are the goal-directed projects that counselors and their clients jointly construct, articulate, and enact relevant to the transition to adulthood?” The findings indicated the relationship and identity are intertwined goal-directed projects within counseling as well as outside of it. These projects contributed to the reframing and reorganization of clients' transition projects outside of counseling in occupational, educational, and familial domains. The findings suggest important implications for counseling youth in transition, that is, counselors and clients explicitly address their joint relationship and identity goals in an effort to realize a mutually satisfactory and important transition to adulthood. 相似文献
58.
This study examined the role of character gender in prime time television health portrayals. A content analysis of 1,291 health-related storylines from three spring seasons (2004–2006) of the ten most popular American television programs measured the frequency of male and female characters in prominent roles and how storylines differed with the sex of the ill or injured character. Our analyses revealed a significantly greater number of male characters. Moreover, storylines with a male ill or injured character were more serious in tone, more likely to take place in a medical setting, and had higher educational value. Proportionally, there were some similarities in storylines across the sexes, however, the absolute differences are striking and may have unfortunate effects on viewers. 相似文献
59.
This study examines the relationship between college students' perceptions of their campus' multicultural climate and their acceptance of racial/ethnic diversity. A two-mediator model, based on acculturation principles, was successfully fit to survey data from 434 college students of diverse racial/ethnic heritage. Results showed that valuing positive interactions with members of ethnocultural groups other than one's own is a positive mediator and strength of ethnocultural identity is a (much less important) negative mediator of the relationship between student perceptions of multicultural campus programming and personal acceptance of diverse racial/ethnic groups. Furthermore, each mediator independently contributed to the prediction of such acceptance. Overall, the model accounts for about 25% of the variance in acceptance of diversity and was a better fit to the data than a reverse path model. Follow-up analyses, separately by ethnic group, showed that perceptions of campus programming predicted acceptance of diversity for the White subsample, but not for the Latino subsample. Nevertheless, the two acculturation-related constructs were important for both groups, with the model accounting for 28% and 24% of their respective variances in acceptance of diversity. Practical implications are drawn. 相似文献
60.
This study is based on analysis of copyright policies and 26 interviews with science and engineering faculty at three research
universities on the topic of copyright beliefs, values, and practices, with emphasis on copyright of instructional materials,
courseware, tools, and texts. Given that research universities now emphasize increasing external revenue flows through marketing
of intellectual property, we expected copyright to follow the path of patents and lead to institutional emphasis of policies
and practices that enhanced universities’ intellectual property portfolios, accompanied by an increase in copyrighting by
professors. Although this pattern occurred with regard to institutions, professors offered a more varied pattern, with some
fully participating in commercialization of copyright and embracing entrepreneurial values, while others resisted or subverted
commercial activity in favor of traditional science and engineering values. 相似文献