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101.
Benoît Grasser 《LABOUR》1996,10(1):63-92
ABSTRACT: The observation of economic activity grants an equally important place to learning as some recent theoretical problems. However, what is meant by learning, and what in the productive activity enables the application of the learning process? This paper examines the notion of learning, as far as the firm is concerned, putting the emphasis on two main directions. On one hand, learning is not only a dynamic but also a process: it is not only a matter of going from one point to another, but also a process of construction of knowledge and rules. On the other hand, this process must be understood as an articulation between individual and organizational learning.  相似文献   
102.
103.
In combinatorial group testing problems the questioner needs to find a special element \(x \in [n]\) by testing subsets of [n]. Tapolcai et al. (in: Proceedings of IEEE INFOCOM, Toronto, Canada, pp 1860–1868, 2014; IEEE Trans Commun 64(6):2527–2538, 2016) introduced a new model, where each element knows the answer for those queries that contain it and each element should be able to identify the special one. Using classical results of extremal set theory we prove that if \(\mathcal {F}_n \subseteq 2^{[n]}\) solves the non-adaptive version of this problem and has minimal cardinality, then
$$\begin{aligned} \lim _{n \rightarrow \infty } \frac{|\mathcal {F}_n|}{\log _2 n} = \log _{(3/2)}2. \end{aligned}$$
This improves results in Tapolcai et al. (2014, 2016). We also consider related models inspired by secret sharing models, where the elements should share information among them to find out the special one. Finally the adaptive versions of the different models are investigated.
  相似文献   
104.
In this paper, we draw on Irish SILC data to examine the roles of social class, non-class risk groups and state policies in influencing enforced material deprivation as Ireland moved from a period of economic boom through deep recession and on to early recovery. We also employ Sen’s capability approach to explore the extent to which certain social risk groups differ in their capacity to convert social class-differentiated resources into increased capability in relation to avoiding material deprivation. The findings refute the notion of polarization either across time as a result of recession or as a result of more vulnerable social risk groups experiencing more pronounced social class differences. Instead, the impact of recession on social class and social risk group operated mainly in an additive manner with each having a relatively independent impact on deprivation. The exception was lone parents who were less able to convert the benefits of higher social class position into reduced deprivation levels.  相似文献   
105.
The purpose of the study was to evaluate the associations between child maltreatment, cognitive schemas of disconnection/rejection reported in emerging adulthood, and social support perceived in emerging adulthood among young women who have exited placements in residential care. The sample is derived from a longitudinal study conducted with 132 young women who had been placed in residential care during adolescence in Montreal (Canada) in 2008–2009. The present study relied solely on the last measurement wave of this study, which was conducted approximately 5 years (2012–2014) after Wave 1. At this time, participants were out of residential care (mean age = 19.4 years). Results showed that the more severe the retrospective accounts of child maltreatment were, the less social support young women perceived as available to them in emerging adulthood. When the tendency to endorse disconnection/rejection schemas is considered, the direct connection between maltreatment and perceived social support disappears, and we instead see an indirect relationship through these schemas. Findings suggest that programs and services must go beyond identifying social‐support networks for young women care leavers. Considerable effort should be devoted to helping these young women develop the skills they need to build and maintain trusting relationships with significant people around them.  相似文献   
106.
This study compares the attitudes, knowledge, and behavior of parents of 5- to 17-year-old children regarding youth gambling. This information was obtained through two telephone surveys conducted in 1995, and 5 years later in 2000, in the Québec City area. Survey 1, in 1995, was conducted on 279 respondents, while survey 2, in 2000, was carried out with 213 respondents. Results showed a number of changes in parents' attitudes, behavior, and knowledge concerning youth gambling: For example, parents' perception of the age of onset of gambling behavior had improved slightly at the end of the 5-year period. Furthermore, parents were more satisfied with government limitation of access to gambling, and more accurately informed about legal aspects of the sale of lottery tickets. However, the percentage of parents who failed to associate youth gambling with some of its correlates (arcade attendance, parental gambling problems, and friendship with gamblers) increased from 1995 to year 2000. The improvements that were observed suggested that parents had benefited from media-transmitted information during this period. However, the deterioration of some parental attitudes, and the stability of other variables, suggest that it is still important to educate parents about youth gambling, and to design interventions adapted to parents' needs.  相似文献   
107.
The present study evaluated the effects of a cognitive‐behavioral program on disruptive and delinquent behaviors among a sample of adolescent girls placed in a residential center in Quebec (Canada). This study also investigated the moderating impact of depressive symptoms on program effectiveness. The study used a quasi‐experimental design to allow comparisons between 104 girls in the treatment group and 78 girls in the comparison group over 18 months. Findings showed that the program contributed significantly, albeit modestly, to a decline in some forms of disruptive/delinquent behaviors. Results also indicated that girls with a higher level of depressive symptoms at admission also reported higher involvement in a myriad of disruptive/delinquent behaviors and that for some types of problem behaviors, this higher involvement persisted over time. In general, however, the seriousness of the depressive symptoms that the girls reported at admission did not interfere with the effectiveness of the cognitive‐behavioral program.  相似文献   
108.
The management of microbial risk in food products requires the ability to predict growth kinetics of pathogenic microorganisms in the event of contamination and growth initiation. Useful data for assessing these issues may be found in the literature or from experimental results. However, the large number and variety of data make further development difficult. Statistical techniques, such as meta-analysis, are then useful to realize synthesis of a set of distinct but similar experiences. Moreover, predictive modeling tools can be employed to complete the analysis and help the food safety manager to interpret the data. In this article, a protocol to perform a meta-analysis of the outcome of a relational database, associated with quantitative microbiology models, is presented. The methodology is illustrated with the effect of temperature on pathogenic Escherichia coli and Listeria monocytogenes, growing in culture medium, beef meat, and milk products. Using a database and predictive models, simulations of growth in a given product subjected to various temperature scenarios can be produced. It is then possible to compare food products for a given microorganism, according to its growth ability in these products, and to compare the behavior of bacteria in a given foodstuff. These results can assist decisions for a variety of questions on food safety.  相似文献   
109.
Building mosques inside towns, organising separate squares for Moslems in our own cemeteries, ruling over slaughtering the hallal way, putting high schools under regional governments — all these questions can be debated in France. This body allows (or imposes) a unity in their voicing to the various representatives so that they can stand up the State Representative. This new and legitimate body tries to solve many problems in its numerous specific commissions. Consequently one has to organise a way of working with the various departments, leaving them sufficient freedom according to their demographic numbers. This has also to take into account the many relations which these communities have with the Moslem Regional Council (CRCM), the different countries they come from and Europe. On the other hand, not every one recognises this new body because they had not all be able to express their votes previously. But ruling Islam in France is already beginning to be organised at county levels.  相似文献   
110.
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