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   2656篇
  免费   131篇
  国内免费   5篇
  2792篇
  2021年   18篇
  2020年   34篇
  2019年   39篇
  2018年   74篇
  2017年   67篇
  2016年   66篇
  2015年   50篇
  2014年   65篇
  2013年   320篇
  2012年   125篇
  2011年   127篇
  2010年   72篇
  2009年   71篇
  2008年   104篇
  2007年   105篇
  2006年   102篇
  2005年   96篇
  2004年   87篇
  2003年   94篇
  2002年   80篇
  2001年   50篇
  2000年   47篇
  1999年   39篇
  1998年   40篇
  1997年   29篇
  1996年   35篇
  1995年   35篇
  1994年   42篇
  1993年   28篇
  1992年   34篇
  1991年   28篇
  1990年   31篇
  1989年   29篇
  1988年   26篇
  1987年   34篇
  1986年   20篇
  1985年   41篇
  1984年   22篇
  1983年   35篇
  1982年   26篇
  1981年   25篇
  1980年   16篇
  1979年   25篇
  1978年   33篇
  1977年   22篇
  1976年   14篇
  1975年   22篇
  1974年   27篇
  1973年   16篇
  1968年   15篇
排序方式: 共有2792条查询结果,搜索用时 0 毫秒
201.
This research uses a combination of text mining, co-word analysis, and social network analysis (SNA) to review 132 international sales and sales management (ISSM) articles published between 1980 and 2017. The study provides a unique view of the past and future of ISSM research and provides three principal contributions. First, from a social network–analytic perspective, it offers a unique examination of the ways ISSM research topics are interconnected, as reflected by keyword network structure. Second, by conducting SNA across two periods (1980–1999 and 2000–2017) and examining the changes in network centrality measures, the study offers initial insights into the evolving nature of the ISSM literature. Third, the study reports keyword network disconnections (i.e., structural holes) to propose a fruitful agenda for future ISSM research. Taken together, this research offers a current perspective of the ISSM research domain's evolving nature.  相似文献   
202.
This study assessed the performance of the PC-PTSD in diagnosing postdeployment posttraumatic stress disorder (PTSD) in a cohort of Air Force Medical Services personnel (N = 18,530). The prevalence of PTSD in the cohort was 5.18% based on medical record data. The area under the receiver operating characteristic curve was 0.69, indicating poor classification accuracy. Sensitivity was 47.55%, specificity was 90.68%, positive predictive value was 21.79%, and negative predictive value was 96.94%. The positive and negative likelihood ratios were 5.10 and 0.58, respectively. Several risk factors were found to be associated with a diagnosis of postdeployment PTSD: being a nurse, being enlisted in the medical service career field, being enlisted in the mental health service career field, those over age 30, being a member of the Active Duty service component, and having one’s first deployment be to Iraq. Being an officer was found to be a protective characteristic. These factors could potentially improve screening for PTSD among Air Force healthcare personnel.  相似文献   
203.
Emerging literature shows a consistent pattern of relationship and psychological distress in spouses or partners of combat veterans with symptoms of posttraumatic stress disorder (PTSD). One possible mechanism of partners' distress posited in clinical literature is that excessive discussion of traumatic events from deployment may have negative effects on partners. At the extreme, some partners are suggested to develop PTSD-like symptoms, or secondary traumatic stress. Despite these hypotheses, there have been few empirical tests of the effects of communicating about such events. In a sample of 465 combat veterans and their spouses who participated in the Family Interview Component of the National Vietnam Veterans Readjustment Study, we explored how the extent of couples' deployment-related communication was associated with partner relationships and psychological distress, and whether such associations were moderated by the severity of veterans' PTSD symptoms. Results showed that Vietnam-specific communication correlated negatively with relationship distress, but the effect was negligible after controlling for overall communication in the relationship. On the other hand, Vietnam-specific communication did not correlate with psychological distress, but the association was significantly moderated by veterans' PTSD symptom severity. Specifically, communication about Vietnam was increasingly and positively associated with partners' psychological distress as veterans' symptoms of PTSD rose into the clinical range, but nonsignificantly and negatively associated with such distress as PTSD symptoms decreased below this level. The findings support previous clinical recommendations that couples' discussions of potentially traumatic events be approached cautiously, and they suggest a need to attend to the content of couples' communications when conducting dyadic interventions for PTSD.  相似文献   
204.
205.
The burden of providing informal care to a family member can lead to caregiver depression and potentially harmful caregiving behavior. Given the interpersonal nature of caregiving, the relationship between caregivers and care recipients may impact caregiver responses. We applied attachment theory to understanding caregiver depression, and both potentially harmful and exemplary caregiving responses. We present data from 430 caregivers in the Family Relationships in Late Life (FRILL 2) Project, a multisite, longitudinal study of caregiving. Age, gender, and model of self were related to caregiving responses, suggesting that model of self may help identify caregivers at risk for poor responses.  相似文献   
206.
Recent evidence suggests that, compared with hearing people, deaf people have enhanced visual attention to simple stimuli viewed in the parafovea and periphery. Although a large part of reading involves processing the fixated words in foveal vision, readers also utilize information in parafoveal vision to preprocess upcoming words and decide where to look next. In the study reported here, we investigated whether auditory deprivation affects low-level visual processing during reading by comparing the perceptual span of deaf signers who were skilled and less-skilled readers with the perceptual span of skilled hearing readers. Compared with hearing readers, the two groups of deaf readers had a larger perceptual span than would be expected given their reading ability. These results provide the first evidence that deaf readers' enhanced attentional allocation to the parafovea is used during complex cognitive tasks, such as reading.  相似文献   
207.
We examine the differential signaling impact of two low pricing policies, Price Matching Guarantees and Everyday Low Prices, on consumers' trusting beliefs and purchase intentions. We demonstrate that both PMG and EDLP pricing policies signal stores' ability to offer lower prices. However, whether these sellers were perceived as benevolent, and—consequently—consumers' purchase intentions, varied critically depending upon price uncertainty. Perceived benevolence and purchase intentions were significantly higher [lower] for sellers offering PMG than EDLP when price dispersion was high [low]. Our findings offer insights into whether and under what conditions firms should adopt these low pricing policies.  相似文献   
208.
We argue that consumers with high self-brand connections (SBC) respond to negative brand information as they do to personal failure — they experience a threat to their positive self-view. After viewing negative brand information, high (vs. low) SBC consumers reported lower state self-esteem. Consumers with high SBC also maintained favorable brand evaluations despite negative brand information. However, when they completed an unrelated self-affirmation task, they lowered their brand evaluations the same as low SBC consumers. This finding suggests that high SBC consumers' reluctance to lower brand evaluation might be driven by a motivation to protect the self rather than the brand.  相似文献   
209.
The effect of spacing in relation to word segmentation was examined for four groups of non-native Chinese speakers (American, Korean, Japanese, and Thai) who were learning Chinese as second language. Chinese sentences with four types of spacing information were used: unspaced text, word-spaced text, character-spaced text, and nonword-spaced text. Also, participants' native languages were different in terms of their basic characteristics: English and Korean are spaced, whereas the other two are unspaced; Japanese is character based whereas the other three are alphabetic. Thus, we assessed whether any spacing effects were modulated by native language characteristics. Eye movement measures showed least disruption to reading for word-spaced text and longer reading times for unspaced than character-spaced text, with nonword-spaced text yielding the most disruption. These effects were uninfluenced by native language (though reading times differed between groups as a result of Chinese reading experience). Demarcation of word boundaries through spacing reduces non-native readers' uncertainty about the characters that constitute a word, thereby speeding lexical identification, and in turn, reading. More generally, the results indicate that words have psychological reality for those who are learning to read Chinese as a second language, and that segmentation of text into words is more beneficial to successful comprehension than is separating individual Chinese characters with spaces.  相似文献   
210.
White SW  Kreiser NL  Pugliese C  Scarpa A 《Autism》2012,16(5):453-464
Problems with social anxiety are frequently reported in people with autism spectrum disorders (ASD). It is possible that social anxiety, when present, exacerbates the experience of hostility and other forms of aggression in relation to ASD symptoms. This study sought to determine if social anxiety symptoms mediate the relationship between features of ASD and feelings of hostility in young adults. Self-report measures of social anxiety, ASD, and facets of aggression were collected in a non-clinical sample (n = 618) of college students. Social anxiety was found to partially mediate the relationship between ASD features and self-reported hostility. There was also evidence for inconsistent mediation, such that social anxiety dampened the strength of the relationship between ASD symptoms and verbal and physical aggression. Findings highlight the potential influence of associated psychiatric symptoms in people with ASD. In addition, dimensional conceptualization of ASD symptoms, as opposed to a categorical approach solely, may be a useful approach to studying complex personality processes.  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