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181.
Objective: This study modified the Revised Illness Perception Questionnaire (IPQ-R) in patients with persistent atrial fibrillation (AF).

Design: Qualitative interviews and think-aloud techniques informed modification of the IPQ-R to be specific to AF patients. Confirmatory Factor Analysis (CFA) (n = 198) examined the validity of the modified IPQ-R (AF-IPQ-R). Exploratory factor analysis (EFA) examined the new AF-triggers scale. Construct validity examined associations between the AF-IPQ-R, quality of life (QoL) and beliefs about medicines. Test–retest and internal reliability were examined.

Results: Interviews indicated that patients viewed triggers of AF rather than initial causes of illness as more applicable. Patients believed specific behaviours such as rest could control AF. Treatment control beliefs related to pharmacological and procedural treatments. These data were used to modify the IPQ-R subscales and to develop a triggers of AF scale. CFA indicated good model fit. EFA of the triggers scale indicated three factors: emotional; health behaviours; and over-exertion triggers. Expected correlations were found between the AF-IPQ-R, QoL and treatment beliefs, evidencing good construct validity.

Conclusion: The AF-IPQ-R showed sound psychometric properties. It provides more detailed specification than the IPQ-R of beliefs that may help to understand poor QoL in AF patients, and guidance for future interventions in this area.  相似文献   

182.
Marriage has significantly changed since Becker proposed his specialization model yet some scholars maintain that specialization characterizes modern couples. Specialization occurs when one partner, traditionally the man, concentrates on market work while the other partner, traditionally the woman, focuses on nonmarket work such as housework or childcare. Using innovative time diary data from primarily highly-educated, White, dual-earner U.S. couples, we examine how couples manage their time in market and household work and leisure across a momentous, gendered life course turning point—the transition to parenthood. We find little evidence of specialization, but stronger evidence of nonspecialization where both partners concurrently engaged in market work or leisure. Yet gender still mattered. Men enjoyed more leisure time, particularly on nonworkdays, whereas their partners performed more nonmarket work. Our study is the first known to uncover exactly what men were doing while women performed additional minutes of housework and childcare. On nonworkdays, fathers engaged in leisure 47% and 35% of the time during which mothers performed childcare and routine housework, respectively. Mothers engaged in leisure only about 16% to 19% of the time that fathers performed childcare and routine housework. In sum, although our study challenges economic theories of specialization by suggesting that nonspecialization is the norm for new parents’ time among highly-educated, dual-earner couples, persistent gender inequalities continue to characterize family work and leisure time.  相似文献   
183.
Animal Cognition - Egg rejection is a crucial defence strategy against brood parasitism that requires the host to correctly recognise the foreign egg. Rejection behaviour has, thus, evolved in many...  相似文献   
184.
Career adaptability is mediated by personality factors and socio-psychological processes, with learning playing an important role. Using a five-fold career adapt-abilities competency framework (defined here as control, curiosity, commitment, confidence and concern), which was developed from the international quantitative study that is the focus of this special edition, an explicitly qualitative study of the career biographies of mid-career changers from two European countries was undertaken. Data from 64 in-depth interviews with adults in contrasting labor markets from Norway and the UK were analysed deductively, using a career adapt-abilities framework. Results demonstrate the utility of the framework, as well as how adaptive adults used both formal and informal learning to develop career adapt-ability competencies, over time, across occupations and occupational sectors. A key conclusion relates to how this career adapt-abilities competency framework could be used to motivate adults in mid-career to adopt behaviors that help them effect positive career change.  相似文献   
185.
In the current longitudinal study, we examined associations between Black and Latino youths' perceptions of the public's opinion of their racial/ethnic group (i.e., public regard) and changes in academic adjustment outcomes across middle school. We also tested combinations of racial/ethnic socialization and parent involvement in academic activities as moderators of this association. We used a 2nd-order latent trajectory model to test changes in academic adjustment outcomes in a sample of 345 Black and Latino urban youth across 6th, 7th, and 8th grades (51% female). Results revealed a significant average linear decline in academic adjustment from 6th to 8th grade, as well as significant variation around this decline. We found that parenting moderated the association between public regard and the latent trajectory of academic adjustment. Specifically, for youth who reported high racial/ethnic socialization and low parent academic involvement, lower public regard predicted lower academic adjustment in 6th grade. For youth who reported both low racial/ethnic socialization and low parent academic involvement, lower public regard predicted a steeper decline in academic adjustment over time. Finally, among youth who reported high racial/ethnic socialization and high parent academic involvement, public regard was not associated with either the intercept or the slope of academic adjustment. Thus, the combination of high racial/ethnic socialization and parent academic involvement may protect youths' academic motivation and performance from the negative effects of believing the public has low opinions of one's racial/ethnic group. Implications for protecting Black and Latino youths' academic outcomes from decline during middle school are discussed.  相似文献   
186.
People will often grasp an object with an uncomfortable initial grasp if this affords more comfort at the end of the movement. The authors' primary objective was to examine whether grasp planning is influenced by precision demands at the start and end of the movement. Twenty right-handed individuals performed a unimanual grasping and placing task in which the precision requirements at the start and end of the movement were either identical (low initial and final precision, high initial and final precision) or different (low initial and high final precision, high initial and low final precision). The major finding to emerge was the presence of individual differences. 50% of participants changed their initial grasps based on the precision requirements of the task, and were more likely to satisfy end-state comfort when the final precision requirements were high than when they were low. In contrast, 50% of participants generally planned their movements to satisfy end-state comfort (regardless of precision requirements). The authors hypothesized that the former group of participants was sensitive to the precision demands of the task, and participants planned their grips in accordance with these demands. In contrast, the latter group of participants reduced the cognitive costs by using previously successful grasp plans.  相似文献   
187.
Previous work on social support and stress tolerance using laboratory-based cardiovascular stress response paradigms has suggested that perceived social support may be effective in building resilience in recipients. However, such paradigms are often socially de-contextualized insofar as they fail to take account of the social aspects of stress itself. Using 90 healthy college women, the present study sought to examine the association between self-reported perceived social support and cardiovascular stress tolerance. Participants underwent two consecutive exposures to a mental arithmetic task. On second exposure to the stressor, participants completed the task under either social threat or control conditions. Social threat was manipulated using socially salient instructions, to create a high social context. Adaptation to stress was established in terms of comparisons between cardiovascular responses to successive exposures. Results showed that cardiovascular responses tended to habituate across time, with perceived social support associated with the degree of habituation, but only under certain contextual conditions; high perceived support was associated with effective habituation under control conditions only. This response pattern is consistent with the view that high perceived social support buffers against stress in healthful ways, but only in asocial contexts.  相似文献   
188.
Over the past few decades, researchers have documented positive associations between direct child maltreatment and exposure to interpersonal violence (including intimate partner violence, community violence, school violence, and media violence) and children's externalizing behavior problems. However, current family violence literature largely ignores the effects of child abuse on other children in the family. A handful of studies have focused on exposure to child abuse and documented the behavioral effects on siblings, and these studies lend support for broadening scholarship focused on this type of family violence. This article presents empirical research and theories that focus on the relationships between child physical abuse and exposure to intimate partner violence and children's externalizing behavior problems. Using this literature as a foundation, an argument is made for the need to focus on children's exposure to child physical abuse. This article presents information from the few studies that have focused on children who were exposed to the physical abuse of a sibling and offers theoretical frameworks, including social learning theory and psychological proximity, as a foundation for future research. The article concludes with a discussion of services that may be necessary for children who have been exposed to the physical abuse of a sibling, including services focused on safety and mental health.  相似文献   
189.
The purpose of this study was to investigate whether vertical and leg stiffness, and stretch-shortening cycle (SSC) ability differed in developing athletes of various maturity status during maximal sprint running. Seventy-four male participants between 8 and 16 years of age were categorized into pre-, mid- or post-peak height velocity (PHV) and sprinted for 30 meters on a non-motorized treadmill. Dimensionless vertical stiffness increased significantly (p < .05) from pre-, to mid- and post-PHV state, while dimensionless leg stiffness was significantly higher in post- compared to mid- (18.4%) and pre-PHV participants (44.5%). Eccentric power was significantly lower in pre- compared to the mid- and post-PHV participants. Concentric power increased from pre- to mid- and post-PHV state. An analysis of covariance revealed no significant differences between all groups in dimensionless vertical and leg stiffness, eccentric and concentric time and power when controlling for years from PHV (maturation). Eccentric or concentric power, were found to be the best predictors of maximum velocity across all maturation groups (r2 = .37–.68). It seems that maturation affects the ability to absorb and produce power and furthermore these variables are important predictors of maximal running velocity.  相似文献   
190.
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