收费全文 | 17717篇 |
免费 | 711篇 |
国内免费 | 4篇 |
2019年 | 248篇 |
2018年 | 320篇 |
2017年 | 277篇 |
2016年 | 329篇 |
2015年 | 236篇 |
2014年 | 307篇 |
2013年 | 1473篇 |
2012年 | 525篇 |
2011年 | 590篇 |
2010年 | 351篇 |
2009年 | 377篇 |
2008年 | 489篇 |
2007年 | 511篇 |
2006年 | 477篇 |
2005年 | 403篇 |
2004年 | 432篇 |
2003年 | 392篇 |
2002年 | 394篇 |
2001年 | 479篇 |
2000年 | 529篇 |
1999年 | 360篇 |
1998年 | 223篇 |
1997年 | 168篇 |
1996年 | 184篇 |
1995年 | 180篇 |
1994年 | 163篇 |
1992年 | 289篇 |
1991年 | 291篇 |
1990年 | 303篇 |
1989年 | 288篇 |
1988年 | 274篇 |
1987年 | 238篇 |
1986年 | 254篇 |
1985年 | 268篇 |
1984年 | 199篇 |
1983年 | 218篇 |
1982年 | 168篇 |
1980年 | 162篇 |
1979年 | 254篇 |
1978年 | 226篇 |
1975年 | 218篇 |
1974年 | 245篇 |
1973年 | 269篇 |
1972年 | 225篇 |
1971年 | 210篇 |
1970年 | 162篇 |
1969年 | 195篇 |
1968年 | 249篇 |
1967年 | 239篇 |
1966年 | 209篇 |
Research indicates a robust association between personality and substance use and misuse. The high prevalence and pervasive detrimental impacts of alcohol use disorder (AUD) and smoking of tobacco necessitate more studies designed to identify factors closely associated with these outcomes in specific populations. The analyses reported in the present paper concern the relative utilities of five measures of personality and personality pathology rated by three sources (self, informant, and interviewer) in predicting AUD and regular smoking in a representative sample of 987 older adults, an understudied and uniquely vulnerable population. All measures and sources contributed to the predictions, with notable parallels as well as some important differences identified across substances and sources of information. In particular, low agreeableness robustly predicted AUD and smoking across self- and informant-reports. High interviewer-rated borderline personality pathology also strongly predicted AUD. Model fit indices suggested that measures of personality and personality pathology have stronger utility in predicting AUD as compared to regular smoking. These findings have important implications for the assessment of older adults in research and clinical settings and for the understanding of enduring risk factors for substance misuse later in life. Multi-source personality information is valuable for generating a complete picture of the relationship between personality and substance misuse.
相似文献Approximately half of mothers receiving substance use treatment are involved with childcare proceedings. This review aims to determine whether integrated treatment programmes for mothers with substance use problems are effective in preventing out-of-home placement (temporally/permanent) and influencing other maternal factors such as patterns of substance use, treatment completion and parenting behaviours. Six trials were identified—two randomised controlled trials and four non-randomised controlled studies. The pooled sample of participants was 1717. The results showed that mothers who participated in integrated treatment programmes were significantly less likely to have the children removed from their care (Odds Ratio (OR)?=?0.40, 95% CI?=?0.27, 0.61), more likely to complete substance use treatment (OR?=?3.01, 95% CI?=?1.79, 5.06), and more likely to reduce their alcohol consumption (Standardised Mean Difference (SMD)?=??0.40, 95% Cl?=??0.78, ?0.01) and drug use (SMD?=??0.30, 95% CI?=??0.53, ?0.07). However, non-significant reductions were observed for parent–child conflict (SMD?=??0.35, 95% CI?=??0.72, 0.03) and child abuse risk (SMD?=??0.03, 95% CI?=??0.36, 0.31). While the findings from this review suggest that mothers involved in integrated treatment programmes could potentially be less likely to experience out-of-home child placements and more likely to improve substance use treatment outcomes, little evidence exists for the effectiveness of these interventions. Further research, particularly high-quality RCTs, is required to demonstrate and persuade health and public policy on the far-reaching value of the integrated approaches.
相似文献Elements of military life can create challenges for all family members, including military-connected adolescents, and can have detrimental consequences for their adjustment. Although research with samples of military-connected adolescents has examined the influences of military stressors for adolescent adjustment (e.g., depressive symptoms, anxiety), less research has identified possible mechanisms responsible for these effects, particularly the role of specific familial factors. Drawing from social ecological theory and attachment theory, we examined the associations between military stressors (e.g., parental rank, combat deployments, permanent change of station moves) and self-reported adolescent adjustment (e.g., depressive symptoms, self-efficacy) along with examining adolescents’ perceptions of parent-adolescent relationship quality with both the active duty and civilian parent as a linking mechanism. Using a path analysis, data from 265 Army families were examined to identify the direct and indirect associations between military stressors and adolescent adjustment through parent-adolescent relationship quality. Most military stressors were not significantly related to relationship quality of either parent or indicators of adolescent adjustment. However, parent-adolescent relationship quality with each parent (active duty and civilian parent) was uniquely related to adolescents’ adjustment. Discussion is provided regarding how military stressors and familial factors are conceptualized within the context of military families and implications for future research, family therapy, and policies are suggested.
相似文献