全文获取类型
收费全文 | 891篇 |
免费 | 121篇 |
国内免费 | 53篇 |
出版年
2024年 | 4篇 |
2023年 | 20篇 |
2022年 | 18篇 |
2021年 | 19篇 |
2020年 | 37篇 |
2019年 | 53篇 |
2018年 | 57篇 |
2017年 | 49篇 |
2016年 | 34篇 |
2015年 | 37篇 |
2014年 | 41篇 |
2013年 | 124篇 |
2012年 | 19篇 |
2011年 | 30篇 |
2010年 | 17篇 |
2009年 | 43篇 |
2008年 | 48篇 |
2007年 | 44篇 |
2006年 | 51篇 |
2005年 | 45篇 |
2004年 | 31篇 |
2003年 | 38篇 |
2002年 | 24篇 |
2001年 | 20篇 |
2000年 | 18篇 |
1999年 | 26篇 |
1998年 | 20篇 |
1997年 | 15篇 |
1996年 | 14篇 |
1995年 | 14篇 |
1994年 | 11篇 |
1993年 | 6篇 |
1992年 | 10篇 |
1991年 | 7篇 |
1990年 | 2篇 |
1989年 | 2篇 |
1988年 | 2篇 |
1985年 | 4篇 |
1982年 | 2篇 |
1981年 | 1篇 |
1980年 | 3篇 |
1978年 | 2篇 |
1977年 | 1篇 |
1976年 | 2篇 |
排序方式: 共有1065条查询结果,搜索用时 15 毫秒
131.
Relationships Among Paternal Involvement and Young Children's Perceived Self-Competence and Behavioral Problems 总被引:1,自引:0,他引:1
Rex E. Culp Stephanie Schadle Linda Robinson Anne M. Culp 《Journal of child and family studies》2000,9(1):27-38
We examined the relationships of father involvement to young children's perceived self-competence and fathers' and mothers' perceptions of their children's internalizing and externalizing behavioral problems. The results indicated that mothers in families in which father involvement is high may have a more positive outlook regarding their child's behavior than do mothers in families in which father involvement is low. Fathers who were highly involved indicated their children have more behavior problems than fathers who were not highly involved. High father involvement was associated with increased children's feelings of paternal acceptance, a factor that plays a role in the development of self-concept and esteem. 相似文献
132.
增塑剂DEHP的神经和行为发育毒性 总被引:1,自引:0,他引:1
增塑剂邻苯二甲酸二乙基己酯(Di-(2-ethylhexyl) phthalate,DEHP)是一种具有拟雌激素和抗雄激素活性的环境内分泌干扰物,人类和野生动物可通过不同途径终生暴露于DEHP.母体摄入的DEHP可通过胎盘和乳汁转入子代体内并进入脑组织.围生期DEHP暴露性别特异性地改变子代大鼠下丘脑视前区芳香酶活性而影响雌激素合成,并通过改变雌激素受体活性干扰雌激素对脑发育的调节作用.DEHP及其代谢产物可以影响神经细胞的增殖分化和突触形成,干扰性激素调控发育过程中的下丘脑氨基酸递质系统对促性腺激素释放激素分泌的刺激作用,影响中脑多巴胺递质系统发育而诱导自发性多动症.DEHP对脑发育的作用最终影响动物的早期行为、学习记忆和情感等行为发育. 相似文献
133.
Joonas Hokkanen Risto Lahdelma Kaisa Miettinen Pekka Salminen 《Journal of Multi-Criteria Decision Analysis》1998,7(5):273-284
We describe a real-life application of a new multicriteria method in the context of assisting the decision-making for a general plan in the municipality of Kirkkonummi in Uusimaa, Finland. At the time our group started working on the problem, a proposal for an overall plan had already been completed, but the order in which different regional parts of the plan should be implemented needed to be considered based on the environmental impact assessment (EIA) procedure. The EIA procedure generated a large amount of data about the different impacts of the alternatives. For this group decision making problem we developed the SMAA-3 decision support method which does not require any explicit preference information from the decision makers during the procedure. The uncertainty of the basic data is modelled using ELECTRE III-type pseudo-criteria with preference and indifference thresholds. © 1998 John Wiley & Sons, Ltd. 相似文献
134.
Madjid Tavana 《Journal of Multi-Criteria Decision Analysis》2002,11(2):75-96
The vast amount of information that must be considered to solve inherently ill‐structured and complex strategic problems creates a need for tools to help decision makers (DMs) recognize the complexity of this process and develop a rational model for strategy evaluation. Over the last several decades, a philosophy and a body of intuitive and analytical methods have been developed to assist DMs in the evaluation of strategic alternatives. However, the intuitive methods lack a structured framework for the systematic evaluation of strategic alternatives while the analytical methods are not intended to capture intuitive preferences. Euclid is a simple and yet sophisticated multiobjective value analysis model that attempts to uncover some of the complexities inherent in the evaluation of strategic alternatives. The proposed model uses a series of intuitive and analytical methods including environmental scanning, the analytic hierarchy process (AHP), subjective probabilities, and the theory of displaced ideal, to plot strategic alternatives on a matrix based on their Euclidean distance from the ideal alternative. Euclid is further compared to the quantitative strategic planning matrix (QSPM) in a real world application. The information provided by the users shows that Euclid can significantly enhance decision quality and the DM's confidence. Euclid is not intended to replace the DMs, rather, it provides a systematic approach to support, supplement, and ensure the internal consistency of their judgments through a series of logically sound techniques. Copyright © 2003 John Wiley & Sons, Ltd. 相似文献
135.
基于社会学习理论和依恋理论,探讨父母低头行为对青少年网络欺负和受欺负的影响,并探究亲子亲密感和内化问题的中介作用。采用父母低头行为量表、亲子亲密感量表、长处和困难问卷和网络欺负量表对1003名青少年进行调查。结果发现:(1)初二学生的网络受欺负和父母低头行为程度最严重,亲子亲密感水平最低;(2)父母低头行为与青少年内化问题、网络受欺负呈显著正相关,与亲子亲密感呈显著负相关;(3)父母低头行为直接影响青少年网络受欺负,但对网络欺负没有直接影响;(4)父母低头行为通过青少年亲子亲密感和内化问题的单独中介和链式中介间接影响网络欺负、网络受欺负。 相似文献
136.
This study aimed to explore the relationships among early adolescents’ perceived parental psychological control/autonomy support, self‐trouble, and internalizing problems as well as the potential gender differences in these relationships. Multiple‐group path analysis was performed on the data collected from 1,089 adolescents in Beijing junior high schools. Results revealed that parental psychological control (autonomy support) was associated with adolescents’ more (fewer) internalizing problems, and self‐trouble acted as a mediator in these two relationships. Moreover, only the indirect relationship between parental autonomy support and internalizing problems via self‐trouble was moderated by gender, with girls showing a little stronger indirect effect than boys, and specifically, it was the relationship between autonomy support and self‐trouble that existed gender differences, with girls showing higher coefficient than boys. The relationship between parental psychological control/autonomy support and early adolescents’ internalizing problems was discussed with regard to self‐trouble and gender differences. 相似文献
137.
Men's hostile sexism promotes aggressive attitudes, motivations and behaviors toward women. Despite the costs these effects should have for women, prior research has failed to test how men's hostile sexism predicts the problems women experience in important domains. We address this oversight by utilizing dyadic data from 363 heterosexual couples to test how male partners’ hostile sexism predicts women's relationship experiences and evaluations. Male partners’ hostile sexism was associated with women experiencing more severe problems across a greater number of domains. Moreover, the areas experienced as most problematic were consistent with the power, dependence, and trust concerns underlying men's hostile sexism, including problems with power dynamics, jealousy, and serious problems involving gender-role conflict, abuse, infidelity and alcohol/drugs. The greater problems associated with male partners’ hostile sexism predicted more negative relationship evaluations for women. These results demonstrate the importance of examining how men's hostile sexism harms women in important life domains. 相似文献
138.
James Griffith 《Military psychology》2019,31(2):128-137
An interest of researchers and practitioners has been postdeployment adjustment of returned soldiers, though the primary focus has been investigating the prevalence of psychiatric conditions. Less attention has been paid to nonclinical conditions, which still have posed significant adjustment problems for soldiers, in particular, for reserve soldiers who revert back to civilian life, family, and employment. The present study examined the occurrence of postdeployment problems among returned Army National Guard soldiers (N = 4,567 in 50 company-sized units). Survey items reliably indicated 7 problem areas. Highest prevalence of problems was being angry (35.9%) and being unable to sleep (43.3%), followed by alcohol abuse (25.1% reported 5 or more drinks in 1 day). Longer deployment lengths were associated with troubled relationships and aggression toward the significant other adult and children in the household. More deployments were associated with aggression toward household children. Self-reported general combat trauma and having killed or wounded someone were associated with all problem areas. Findings are discussed relative to how combat exposure likely alters soldiers’ perceptions and behaviors, including feelings of loneliness and isolation, and risk-taking behaviors of alcohol abuse and aggression toward others. 相似文献
139.
140.
Megan L. Zuelsdorff Rebecca L. Koscik Ozioma C. Okonkwo Paul E. Peppard Bruce P. Hermann Mark A. Sager 《Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition》2019,26(2):144-160
Social engagement is associated with healthy aging and preserved cognition. Two dimensions of engagement, verbal interactions and perceived support, likely impact cognition via distinct mechanistic pathways. We explored the cognitive benefit of each construct among enrollees (N = 1,052, mean age = 60.2 years) in the Wisconsin Registry for Alzheimer’s Prevention study, who provide neuropsychological and sociobehavioral data at two-year intervals. Outcomes included six cognitive factor scores representing key domains of executive function and memory. Key predictors included self-reported perceived social support and weekly verbal interaction. Results indicated that after adjusting for lifestyle covariates, social support was positively associated with Speed and Flexibility and that verbal interactions were associated with Verbal Learning and Memory. These findings suggest that support, which may buffer stress, and verbal interaction, an accessible, aging-friendly form of environmental enrichment, are uniquely beneficial. Both are integral in the design of clinical and community interventions and programs that promote successful aging. 相似文献