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21.
This paper outlines some of the main findings from an exploratory study of a sample of 257 adolescents living in children's homes, foster homes and residential special schools ‘for pupils with emotional and behavioural difficulties’ (‘EBD’). It focuses on the characteristics of service users, particularly contrasting the looked after and EBD groups. Though there are some similarities, there are also important differences between the populations in terms of age, gender, ethnicity, reasons for separation, legal status, family background and education. An attempt was made systematically to compare groups by creating a subsample of ‘difficult’ adolescents, based on involvement in anti‐social behaviour. Unexpectedly, this revealed that half of the teenagers were not ‘difficult’. Factors associated with being identified as ‘difficult’ were explored.  相似文献   
22.
It is unclear whether long-term aerobic (AT) or resistance (RT) training can improve insulin sensitivity (IS) beyond the residual effect of the last training bout in older women (54-78 years). Therefore, a group of nonobese, healthy older women underwent 6 months of AT (n = 8) or RT (n = 10), and the authors measured IS 4 days after the last training bouts using the hyperinsulinemic-euglycemic clamp technique. Women trained 3 days/week. AT consisted of 25- to 60-min sessions of walking/jogging at 60-95% of maximal heart rate. RT consisted of three sets of nine exercises repeated 10 times at 80% of 1 repetition maximum. AT decreased fat mass, whereas both AT and RT increased fat-free mass. Neither training program, however, improved absolute or relative rates of glucose disposal. The authors therefore concluded that nonobese, healthy older women should perform AT or RT on a daily basis in order to improve IS and maintain the improvement.  相似文献   
23.
Low back pain is a costly and incapacitating musculoskeletal disorder. Prospective studies documenting the capacity of work-related factors to predict chronicity are few in number, the methodology used is very diversified, and the results obtained diverge. The aim of the present study is to investigate the capacity of work-related objective (non-psychosocial) and psychosocial factors to predict chronic disability related to low back pain. A longitudinal prospective study with two measurement times was carried out. The sample (N = 258) consisted of workers with subacute low back pain who were on sick leave and receiving compensation from the CSST (Quebec Workers' Compensation Board). Of all the work-related variables measured, perceived stress and fears and beliefs about work were associated with return to work status at the six-month follow-up. The results obtained show the importance of considering fears and beliefs about work when identifying people in the subacute phase of low back pain who are at risk of developing chronic disability.  相似文献   
24.
Facial expressions of fear and disgust have repeatedly been found to be less well recognized than those of other basic emotions by children. We undertook two studies in which we investigated the recognition and visual discrimination of these expressions in school-age children. In Study 1, children (5, 6, 9, and 10 years of age) were shown pairs of facial expressions, and asked to tell which one depicted a target emotion. The results indicated that accuracy in 9- and 10-year-olds was higher than in 5- and 6-year-olds for three contrasts: disgust–anger, fear–surprise, and fear–sadness. Younger children had more difficulty recognizing disgust when it was presented along with anger, and in recognizing fear when it was presented along with surprise. In Study 2, children (5, 6, 9, and 10 years of age) were shown a target expression along with two other expressions, and were asked to point to the expression that was the most similar to the target. Contrary to our expectations, even 5- and 6-year-olds were very accurate in discriminating fear and disgust from the other emotions, suggesting that visual perception was not the main limiting factor for the recognition of these emotions in school-age children.  相似文献   
25.
This paper studies the nonparametric identification of the first‐price auction model with risk averse bidders within the private value paradigm. First, we show that the benchmark model is nonindentified from observed bids. We also derive the restrictions imposed by the model on observables and show that these restrictions are weak. Second, we establish the nonparametric identification of the bidders' utility function under exclusion restrictions. Our primary exclusion restriction takes the form of an exogenous bidders' participation, leading to a latent distribution of private values that is independent of the number of bidders. The key idea is to exploit the property that the bid distribution varies with the number of bidders while the private value distribution does not. We then extend these results to endogenous bidders' participation when the exclusion restriction takes the form of instruments that do not affect the bidders' private value distribution. Though derived for a benchmark model, our results extend to more general cases such as a binding reserve price, affiliated private values, and asymmetric bidders. Last, possible estimation methods are proposed.  相似文献   
26.
Hormone-replacement therapy (HRT) attenuates the menopause-associated alterations in body composition. It is not known, however, whether this effect is a result of a concomitant increase in energy expenditure. The authors examined whether women submitted to a long-term HRT treatment presented greater energy expenditure than women who had never used HRT. We compared 13 postmenopausal women using HRT (>1 yr) with 13 age- (+/-2 yr) and body-mass-index-matched (BMI; +/-1.5 kg/m2) postmenopausal women not using HRT. Resting energy expenditure (REE; indirect calorimetry), body composition, and daily (DEE) and physical activity (PAEE) energy expenditure (accelerometry) were obtained. Although BMI, fat mass, fat-free mass, DEE, and PAEE were similar between groups, the HRT group displayed a significantly greater REE than the no-HRT group (Delta +222 kcal/day). In conclusion, the authors observed that a long-term treatment with HRT is associated with a greater REE in postmenopausal women. These results need to be confirmed.  相似文献   
27.
权近从心性的角度处理天人关系,认为其非常现实且与生命息息相关.在对心的阐释上与朱子不同,认为心虽由气构成,但更主要的是由来自天的理构成,并且把恶与心分割开来.其天人关系的意义及其重要性主要体现在政治实践当中,提出了体用、圣学等重要思想.他用图解的形式来处理天人关系的方法得到了广泛的使用和继承.  相似文献   
28.
Abstract Due to strict protection through the last decades, wolves have returned to many areas from which they have been absent for a long time. This is a conservation success story, but the wolves also cause conflicts wherever they arrive. We have studied the situation in southeastern Norway and in the French Alps, where the conflict patterns are similar. Diverging interpretations of the situation are supported by narratives, and two varieties have become increasingly significant in both countries. Rumors about the secret reintroduction of wolves are common among wolf adversaries. Another narrative, important to the pro‐wolf camp, is based on the notion that particular sheep husbandry practices (unattended rough grazing) are unique to either Norway or France—whereas there are in fact more similarities than differences. Yet, while the reintroduction‐conspiracy rumors are ridiculed, the notion of unique national conflict patterns has achieved a status almost of official truth. Furthermore, the story about natural wolf recovery is itself a value‐laden narrative, and not only “scientific fact.” The different status of these narratives tell us something about power relations: Given their different social basis, it seems relevant to consider the national uniqueness image and the natural recovery theory as tightly interwoven with symbolic power and the reintroduction conspiracy rumors as similarly interwoven with patterns of cultural resistance.  相似文献   
29.
Communicating about the health effects of fish and seafood may potentially result in a conflict situation: increasing intake is desirable because of health and nutritional benefits, but higher consumption may also lead to an increased intake of potentially harmful environmental contaminants. In order to anticipate the communication challenge this conflict may pose, the research presented here aimed to assess the impact of risk/benefit communication on Belgian consumers' fish consumption behavior and fish attribute perception. Data were collected in June 2005 from a sample of 381 women, aged between 20 and 50 years. An experimental design consisting of four message conditions (benefit‐only; risk‐only; benefit‐risk; and risk‐benefit) combined with three information sources (fish and food industry; consumer organization; government) was used. Exposure to the benefit‐only message resulted in an increase from a self‐reported fish consumption frequency of 4.2 times per month to an intended fish consumption frequency of 5.1 times per month (+21%), while fish attribute perceptions only marginally improved. The risk‐only message resulted in a strong negative perceptual change in the range of two points on a seven‐point scale. This translated into an 8% decrease of behavioral intention (from eating fish 4.5 times per month to an intention of eating fish 4.1 times per month). Balanced messages referring to both risks and benefits yielded no significant change in behavioral intention, despite a significant worsening of fish attribute perception. The presentation order of benefits and risks in the balanced message showed a tendency to affect both behavioral intention and attribute perception, with the first message component being most influential. Information source did not yield any significant impact either on behavioral intention or on attribute perceptions, independent of the message content. The results from this study provide valuable insights for future risk/benefit and balanced communication about seafood.  相似文献   
30.
It is now admitted that part-time work is a signal of inequality between the sexes, in both work and family. By focusing on cleavages among women, an analysis is made of how worktime and the company’s position as a subcontractor combine so as to produce inequality among wage-earners by assigning them heterogeneous statuses and thus forcing some of them to cope with precarious working, employment and living conditions. This study of the working and employment conditions of chamber maids in France focuses on those who work part or full-time in cleaning companies under contract with other firms. Inside this rather unskilled group of women, part-time work stresses the differences produced by subcontracting and worsens the inequality between stable, full-time employees and the women subcontracted at part-time who do the same job. These cleavages set off a strike among these part-time workers. Analyzing this labor dispute has shed light on the social relations running through the firm and on invisible issues in work and employment for these women with jobs in the shadows.  相似文献   
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