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51.
In the presence of covariate information, the proportional hazards model is one of the most popular models. In this paper,
in a Bayesian nonparametric framework, we use a Markov (Lévy-driven) process to model the baseline hazard rate. Previous Bayesian
nonparametric models have been based on neutral to the right processes, which have a number of drawbacks, such as discreteness
of the cumulative hazard function. We allow the covariates to be time dependent functions and develop a full posterior analysis
via substitution sampling. A detailed illustration is presented. 相似文献
52.
53.
The relationship between contributions and elicited beliefs in a repeated two-person public good experiment is modeled with the help of a parsimounious random-utility function that allows for conditionally cooperative, opportunistic, and altruistic patterns of behavior. Under standard assumptions, a latent-class mixed logit specification with three sub-populations is shown to capture well heterogeneity in individual contribution levels over time, while also accomodating for different degrees of heteroscedasticity. The estimation results are consistent with the conjecture that the majority of players in public goods games are strongly conditional cooperators, with smaller fractions of the population leaning to opportunistic or altruistic behavior. 相似文献
54.
José Luis García-Lapresta A. A. J. Marley Miguel Martínez-Panero 《Social Choice and Welfare》2010,34(3):487-496
An increasing body of theoretical and empirical work on discrete choice considers a choice design in which a person is asked
to select both the best and the worst alternative in an available set of alternatives, in contrast to more traditional tasks,
such as where the person is asked to: select the best alternative; select the worst alternative; rank the alternatives. Here
we consider voting systems motivated by such “best–worst” choice; characterize a class of “best–worst” voting systems in terms
of a set of axioms in the context of scoring rules; and discuss briefly possible extensions to approval–disapproval systems. 相似文献
55.
Luis Angeles 《Journal of Economic Inequality》2010,8(4):463-473
This paper uses a novel approach for testing Kuznets’ hypothesis. Following Kuznets’ original insights, we test for an inverted
U relationship between employment outside agriculture and income inequality, instead of the traditional focus on GDP per capita
and income inequality. Our results, obtained using panel and country by country regressions, do not support Kuznets’ hypothesis. 相似文献
56.
Contemporary scientific analyses of public organizations underscore the salience of management for understanding how governmental bureaucracies perform. Yet little is known of administrators from minority social groups, and whether their organizations perform better or worse than other bureaucracies. Emphasizing the impact of network engagement on organizational performance, this exploratory study addresses this important research deficiency. A critical component of the analysis presented is the differential impact of administrative engagement with internal and external networks on minority and status quo clientele outcomes. The findings have important implications for studies of managerial networking, equity, and representation in public organizations. 相似文献
57.
Toward Defining the Causal Role of Consciousness: Using Models of Memory and Moral Judgment from Cognitive Neuroscience to Expand the Sociological Dual‐Process Model 下载免费PDF全文
Luis Antonio Vila‐Henninger 《Journal for the theory of social behaviour》2015,45(2):238-260
What role does “discursive consciousness” play in decision‐making? How does it interact with “practical consciousness?” These two questions constitute two important gaps in strong practice theory that extend from Pierre Bourdieu's habitus to Stephen Vaisey's sociological dual‐process model and beyond. The goal of this paper is to provide an empirical framework that expands the sociological dual‐process model in order to fill these gaps using models from cognitive neuroscience. In particular, I use models of memory and moral judgment that highlight the importance of executive functions and semantic memory. I outline each model as it pertains to the aforementioned gaps in strong practice theory. I then use the models from cognitive neuroscience to create an expanded dual‐process model that addresses how and when conscious mental systems override and interact with subconscious mental systems in the use of cultural ends for decision‐making. Finally, using this expanded model I address the sociological debate over the use of interview and survey data. My analysis reveals that surveys and interviews both elicit information encoded in declarative memory and differ primarily in the process of information retrieval that is required of respondents. 相似文献
58.
In measuring human development, one of the main concerns relates to the inclusion of a measure that penalizes inequalities in the distribution of achievements across the population. Using indicators from nationally representative household surveys and census data, this paper proposes a straightforward methodology to estimate a household-based distribution-sensitive human development index aggregated through generalized means. The evidence shows that the losses in human development due to inequality reach up 22, 29 and 57% in Mexico, Peru and Nicaragua, respectively. Among dimensions, the loss in the income index reaches up 61% in Nicaragua, while the education index appears as the most sensitive in the case of Mexico and Peru, with a percentage of loss between 38 and 48%. The importance of household-level calculations is highlighted when we compare the indices computed from the entire distribution with those existing indices computed for quintiles of the distribution, which minimizes the losses due to inequality. Overall, the estimations evidence a higher sensitivity of the index to inequality, and therefore an important space for public action to reduce inequality that could involve positive development returns. 相似文献
59.
Francesco Dotto Alessio Farcomeni Luis Angel García-Escudero Agustín Mayo-Iscar 《Statistics and Computing》2018,28(2):477-493
An iteratively reweighted approach for robust clustering is presented in this work. The method is initialized with a very robust clustering partition based on an high trimming level. The initial partition is then refined to reduce the number of wrongly discarded observations and substantially increase efficiency. Simulation studies and real data examples indicate that the final clustering solution has both good properties in terms of robustness and efficiency and naturally adapts to the true underlying contamination level. 相似文献
60.
Luis F. Martins 《Econometric Reviews》2018,37(5):466-483
This article proposes wild and the independent and identically distibuted (i.i.d.) parametric bootstrap implementations of the time-varying cointegration test of Bierens and Martins (2010). The bootstrap statistics and the original likelihood ratio test share the same first-order asymptotic null distribution. Monte Carlo results suggest that the bootstrap approximation to the finite-sample distribution is very accurate, in particular for the wild bootstrap case. The tests are applied to study the purchasing power parity hypothesis for twelve Organisation for Economic Cooperation and Development (OECD) countries and we only find evidence of a constant long-term equilibrium for the U.S.–U.K. relationship. 相似文献