首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   469篇
  免费   18篇
管理学   26篇
民族学   4篇
人口学   100篇
丛书文集   4篇
理论方法论   70篇
综合类   6篇
社会学   264篇
统计学   13篇
  2024年   1篇
  2023年   7篇
  2022年   2篇
  2021年   3篇
  2020年   15篇
  2019年   26篇
  2018年   36篇
  2017年   42篇
  2016年   14篇
  2015年   11篇
  2014年   39篇
  2013年   85篇
  2012年   25篇
  2011年   28篇
  2010年   14篇
  2009年   12篇
  2008年   15篇
  2007年   18篇
  2006年   11篇
  2005年   7篇
  2004年   6篇
  2003年   6篇
  2002年   8篇
  2001年   7篇
  2000年   5篇
  1999年   4篇
  1998年   3篇
  1997年   5篇
  1996年   2篇
  1995年   2篇
  1994年   5篇
  1993年   3篇
  1992年   5篇
  1991年   2篇
  1989年   1篇
  1988年   1篇
  1986年   1篇
  1985年   2篇
  1984年   1篇
  1983年   1篇
  1980年   3篇
  1979年   1篇
  1977年   2篇
排序方式: 共有487条查询结果,搜索用时 15 毫秒
421.
422.

Background

Hypertensive disorders of pregnancy are among the leading causes of maternal morbidity and mortality. Studies suggest that the use of folic acid may lower the risk of hypertensive disorders in pregnant women.

Aim

The aim of this study was to assess the effects of timing and duration of folic acid-containing supplement use on the risk for gestational hypertension and preeclampsia.

Methods

Exposures and outcomes data were obtained through interviews and review of participant’s medical records from the MotherToBaby cohort studies across the United States and Canada. Demographics, medical history, lifestyle factors, substance use, and fetal sex were assessed as potential confounders. Unadjusted and adjusted risks for gestational hypertension and preeclampsia were examined using odds ratios and 95% confidence intervals.

Findings

3247 women were included in the study. Compared to non-supplement use, early and late supplement use were not significantly associated with the development of gestational hypertension or preeclampsia. The odds of developing gestational hypertension and preeclampsia were significantly reduced as the duration of folic acid-containing supplement use increased.

Conclusion

Findings from this study suggest that the use of folic acid-containing supplements may mitigate the risk for gestational hypertension and preeclampsia.  相似文献   
423.
424.
425.
426.
The current study evaluates a therapy for substance‐dependent perpetrators of partner violence. Sixty‐three males arrested for partner violence within the past year were randomized to a cognitive behavioral substance abuse‐domestic violence (SADV; n = 29) or a drug counseling (DC; n = 34) condition. Seventy percent of offenders completed eight core sessions with no differences between SADV and DC conditions in the amount of substance or aggression at pretreatment. SADV participants had fewer cocaine‐positive toxicology screens and breathalyzer results during treatment, were less likely to engage in aggressive behavior proximal to a drinking episode, and reported fewer episodes of violence than DC participants at posttreatment follow‐up. SADV shows promise in decreasing addiction and partner violence among substance‐dependent male offenders.  相似文献   
427.
Veterinary surgeons (vets) provide us with a fascinating platform to study anthropocentric and zoocentric beliefs, which we argue are gendered in both their genesis and practice. Gendered in the sense of the double meaning of our title ‘who's a good boy then?’, which reflects both a default male gender and a patronizing masculine claim to mastery over the animal. In addition, veterinary practices are organized in specifically masculine ways that, despite the demographic feminization of the profession, are oblivious to distinctively gendered practices and concerns and thus to the reproduction of gendered inequalities. The research also focuses on how there is a tendency for vets to neglect their own bodies for the sake of the animal's welfare (zoocentrism) but, at the same time, this reflects and reproduces masculine anthropocentric demands for human supremacy involving linear rational and effective control over the animal as a necessary part of their commercial and career success. In the empirical presentation, we show how organizational gendering within the gendered organization of veterinary surgery occurs at all levels, sometimes openly and explicitly, but also covertly and implicitly. In seeking to interrogate the covert and implicit in gender asymmetry, we draw on post‐humanist feminist philosophical perspectives that facilitate our challenging of the gendered anthropocentric organization of veterinary work.  相似文献   
428.
Disparities in children's early language skills associated with socioeconomic factors have led to many studies examining children's early language environments, but few as yet in the first year of life. This longitudinal study assessed the home language environments of 50 Australian infants, who varied in maternal education (university education, or not). Full‐day audio recordings were collected and analyzed using the LENA system when infants were aged 6–9 months and 12–15 months. Using the device‐specific analysis software, we assessed 12‐h projected counts of (1) adult speech input, (2) conversational interactions, and (3) child vocalizations. At both ages, higher maternal education was associated with higher counts of adult words and conversational turns, but not child vocalizations. The study adds to the literature by demonstrating disparities in the infants’ language experience within the first year of life, related to mothers’ education, with implications for early intervention and parenting supports.  相似文献   
429.
The maternal voice appears to have a special role in infants’ language processing. The current eye‐tracking study investigated whether 24‐month‐olds (= 149) learn novel words easier while listening to their mother's voice compared to hearing unfamiliar speakers. Our results show that maternal speech facilitates the formation of new word–object mappings across two different learning settings: a live setting in which infants are taught by their own mother or the experimenter, and a prerecorded setting in which infants hear the voice of either their own or another mother through loudspeakers. Furthermore, this study explored whether infants’ pointing gestures and novel word productions over the course of the word learning task serve as meaningful indexes of word learning behavior. Infants who repeated more target words also showed a larger learning effect in their looking behavior. Thus, maternal speech and infants’ willingness to repeat novel words are positively linked with novel word learning.  相似文献   
430.
ABSTRACT

Through empirical research on academics and veterinary surgeons, this article focuses on identity and how it is reflected in, and reproduced by, anxiety and insecurity at work. Three analytical themes – perfection, performativity and commodified service – each of which generates anxiety indicates a loss of autonomy as academics and vets are subjected to competitive market forces as well as an intensification of masculine managerial controls of assessment, audit and accountability. We see these pressures and their effects as reflecting a commodification of service provision where the consumer (student or client) begins to redefine the relationship between those offering some expertise and those who are its recipients, partly achieved through the performative gaze of constant and visible rating mechanisms. Our empirical research also identifies sources of anxiety concerns in their attempts to achieve perfection against this background of uncertain knowledge and precarious contexts of the performative nature of professional expertise.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号