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91.
92.
Marriage as a commitment device 总被引:3,自引:0,他引:3
Alessandro Cigno 《Review of Economics of the Household》2012,10(2):193-213
Non-cooperative couples are inefficient. Cooperation raises the utility of both parents, and of each child, but does not guarantee efficiency. In the presence of credit rationing, a cooperative equilibrium may not exist outside marriage, because the main earner cannot credibly promise to compensate the main childcarer at some future date, and may not be able or willing to do so at front. By allowing the main childcarer to credibly threaten divorce if the main earner does not deliver the promised compensation when the time comes, marriage makes that promise credible, and thus increases the probability that a cooperative equilibrium will exist. In a separate-property jurisdiction, a reduction in the cost or difficulty of obtaining a divorce increases married women??s participation in the labour market. In a community-property one, it has no such effect. 相似文献
93.
Adam Arvidsson Alessandro Caliandro Massimo Airoldi Stefania Barina 《Information, Communication & Society》2016,19(7):921-939
This paper addresses crowd-based dynamics of value creation in participatory culture. Based on a corpus of 114,931 tweets associated with One Direction and similar boy bands, we draw on recent theories of crowd-based organization in digital media as well as classical crowd theory to build a theoretical model of collective value creation. In our model, the achievement of value in the form of trending and individual microcelebrity is based on affectively driven processes of imitation, rather than on rational evaluation and deliberation. We contrast this model with established accounts of microcelebrity and draw out implications for theories of crowd-based organization in digital media and for theories of participatory culture and collaborative value creation in general. 相似文献
94.
Francesco C. Billari Piero Manfredi Alessandro Valentini 《Mathematical Population Studies》2013,20(1):33-63
We exploit a multistate generalisation of a classical, one‐sex, stable population model to evaluate structural and long‐term effects of changes in the attainment of adulthood. The demographic framework that inspired this paper is provided by Italy, where a strong delay in the transition to adulthood and union formation has been observed over the last several decades. Italy has also experienced very low fertility levels, and the subsequent ageing problems have become of primary concern. We first discuss a theoretical framework based on the model developed by Inaba (1995) and then include the process of transition to adulthood. We consider explicitly some specifications of the general model, and we present two distinct empirical applications, one using macrosimulation and the other one using a linear approximation. Our principal aim is to evaluate the impact of the delay in the attainment of adulthood on reproduction and on the age structure of the population. 相似文献
95.
An integrated risk management strategy, combining insurance and security investments, where the latter contribute to reduce the insurance premium, is investigated to assess whether it can lead to reduced overall security expenses. The optimal investment for this mixed strategy is derived under three insurance policies, covering, respectively, all the losses (total coverage), just those below the limit of maximum liability (partial coverage), and those above a threshold but below the maximum liability (partial coverage with deductibles). Under certain conditions (e.g., low potential loss, or either very low or very high vulnerability), the mixed strategy reverts however to insurance alone, because investments do not provide an additional benefit. When the mixed strategy is the best choice, the dominant component in the overall security expenses is the insurance premium in most cases. Optimal investment decisions require an accurate estimate of the vulnerability, whereas larger estimation errors may be tolerated for the investment-effectiveness coefficient. 相似文献
96.
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98.
Alessandro Cortesi Patrizia Tettamanzi Fabio Corno 《Journal of Management and Governance》2009,13(1-2):75-100
The Corporate Governance (CG) theme has recently been the subject of significant measures to try to restore confidence among investors by encouraging information and communication transparency. The Italian Parliament approved Law 262 in 2005; and in 2006 the CG Committee of the Italian Stock Exchange approved the new Self-Regulatory Code for listed companies. This paper deals with control matters and moves on to causes and cases of their failures in relation to a sample of Italian companies. More precisely, it investigates, through an empirical survey, the main limits and areas for improvement in the working of company Internal Control (IC) system(s) and in the objectives of the role of the three main professional bodies currently in charge of it in Italy (i.e. Internal Auditing, Statutory Auditors and External Auditors). The results obtained show that the Italian situation is very unusual, due to a long tradition: the possibility to choose between different administration and control systems, often with coexisting and overlapping roles, creates problems in terms of responsibility and control. The first answers to the critical issues highlighted are given by the aforementioned laws, intended as the main catalysts for a review of the roles of all IC bodies. However, much work has still to be done. The final aim was to come up with suggestions about the possibility of finding areas for improvement within those companies’ IC systems. 相似文献
99.
Cecilia Tomassini Douglas A. Wolf Alessandro Rosina 《Journal of marriage and the family》2003,65(3):700-715
Many studies of intergenerational exchanges include parent‐child proximity as an exogenous explanatory variable. Proximity may itself be a consequence of intergenerational resource flows, however. We analyze patterns of economic transfers between generations and their relationship to parent‐child proximity in Italy. Parental support for a child's home purchase may influence the child's choice of location, whether to facilitate parent‐child contacts, grandchild care, or parent care. We examine the situation of married couples, focusing on housing help received and the association of that help with proximity to each spouse's parents. Using 1998 survey data and multinomial logistic regression models, we find that past housing assistance has a significant effect on current proximity to each spouse's parents, controlling for parents' survival, family composition, and other factors. 相似文献
100.
Alessandro Fassò 《Statistical Methods and Applications》1992,1(2):235-249
Summary In the present paper, rupture detection in a possibly complex stochastic system is enhanced by means of a procedure for localizing
the actual rupture among various possible sources. A general model is considered which includes a variety oflinear and non-linear
innovation based models. The proposed localizing multiple comparison procedure satisfiescoherence andconsonance and, for a wide class of models, strongly controls the familywise error i.e. the various type I error probabilities involved.
The first order autoregressive optimal control model is considered as a popular example. Montecarlo simulations are performed
to evaluate asymptotic approximations and diagnostic performances by means of mean time of delay and mean time between false
alarms. Some conjectures are then given on the possible structure of these indicators. 相似文献