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81.
The current study draws on attachment theory (Bowlby, 1982) to examine how attachment (a relationship-based trait disposition), and the interaction between attachment and emotion regulation, relate to LMX quality. Data were collected from subordinates and supervisors in a variety of work settings. Attachment anxiety and attachment avoidance negatively predicted LMX quality. Moderator effects were found between attachment and emotion regulation. 相似文献
82.
Nicola Barban 《Revue europeenne de demographie》2013,29(4):357-385
This paper investigates the role of family trajectory, i.e., the whole sequence of family events during the life course of early adults in shaping their health outcomes. Union formation and childbearing are jointly considered, since the two life domains are highly connected and their intersections may have an effect on health outcomes. Data come from wave I and wave IV of the National Longitudinal Study of Adolescent Health (Add Health) in the United States. The paper is divided in two parts. The first part focuses on family transitions and investigates if changes in timing (when events happen), quantum (what and how many transitions), and ordering (in what order), have an effect on the health of young women. In the second part, life course trajectories are classified into six groups representing different ideal-types of family trajectories and the association of these trajectories with health outcomes is explored. Results suggest that family trajectories play an important role on different health outcomes. Controlling for selection and background characteristics, precocious and “non-normative” transitions are associated with lower self-reported health and higher propensity of smoking and drinking. 相似文献
83.
Roberto Benedetti Monica Pratesi Nicola Salvati 《Statistical Methods and Applications》2013,22(1):81-95
Small area estimators are often based on linear mixed models under the assumption that relationships among variables are stationary across the area of interest (Fay–Herriot models). This hypothesis is patently violated when the population is divided into heterogeneous latent subgroups. In this paper we propose a local Fay–Herriot model assisted by a Simulated Annealing algorithm to identify the latent subgroups of small areas. The value minimized through the Simulated Annealing algorithm is the sum of the estimated mean squared error (MSE) of the small area estimates. The technique is employed for small area estimates of erosion on agricultural land within the Rathbun Lake Watershed (IA, USA). The results are promising and show that introducing local stationarity in a small area model may lead to useful improvements in the performance of the estimators. 相似文献
84.
Norbert K. Semmer Nicola Jacobshagen Laurenz L. Meier Achim Elfering Terry A. Beehr Wolfgang Kälin 《Work and stress》2015,29(1):32-56
Illegitimate tasks represent a task-level stressor derived from role and justice theories within the framework of “Stress-as–Offense-to-Self” (SOS; Semmer, Jacobshagen, Meier, & Elfering, 2007). Tasks are illegitimate if they violate norms about what an employee can properly be expected to do, because they are perceived as unnecessary or unreasonable; they imply a threat to one's professional identity. We report three studies testing associations between illegitimate tasks and well-being/strain. In two cross-sectional studies, illegitimate tasks predicted low self-esteem, feelings of resentment towards one's organization and burnout, controlling for role conflict, distributive injustice and social stressors in Study 1, and for distributive and procedural/interactional justice in Study 2. In Study 3, illegitimate tasks predicted two strain variables (feelings of resentment towards one's organization and irritability) over a period of two months, controlling for initial values of strain. Results confirm the unique contribution of illegitimate tasks to well-being and strain, beyond the effects of other predictors. Moreover, Study 3 demonstrated that illegitimate tasks predicted strain, rather than being predicted by it. We therefore conclude that illegitimate tasks represent an aspect of job design that deserves more attention, both in research and in decisions about task assignments. 相似文献
85.
Luigi Pace Alessandra Salvan Nicola Sartori 《Australian & New Zealand Journal of Statistics》2015,57(3):347-361
Effective implementation of likelihood inference in models for high‐dimensional data often requires a simplified treatment of nuisance parameters, with these having to be replaced by handy estimates. In addition, the likelihood function may have been simplified by means of a partial specification of the model, as is the case when composite likelihood is used. In such circumstances tests and confidence regions for the parameter of interest may be constructed using Wald type and score type statistics, defined so as to account for nuisance parameter estimation or partial specification of the likelihood. In this paper a general analytical expression for the required asymptotic covariance matrices is derived, and suggestions for obtaining Monte Carlo approximations are presented. The same matrices are involved in a rescaling adjustment of the log likelihood ratio type statistic that we propose. This adjustment restores the usual chi‐squared asymptotic distribution, which is generally invalid after the simplifications considered. The practical implication is that, for a wide variety of likelihoods and nuisance parameter estimates, confidence regions for the parameters of interest are readily computable from the rescaled log likelihood ratio type statistic as well as from the Wald type and score type statistics. Two examples, a measurement error model with full likelihood and a spatial correlation model with pairwise likelihood, illustrate and compare the procedures. Wald type and score type statistics may give rise to confidence regions with unsatisfactory shape in small and moderate samples. In addition to having satisfactory shape, regions based on the rescaled log likelihood ratio type statistic show empirical coverage in reasonable agreement with nominal confidence levels. 相似文献
86.
Bridging the divide: elders and the assessment process 总被引:3,自引:0,他引:3
Summary At the heart of needs-based assessment is an uneasy tensionbetween agency-centred and user-centred objectives. Using casematerial from an ethnographic study of the process of assessmentfor older people, this paper looks at what happens when practitionerstry to understand the needs of individual elders through a processdominated by agency agendas. By marginalizing the older person'sinsights, the risk of unwelcome or inappropriate interventionmay increase. A user-centred approach, by contrast, requiresinformation gathering and provision that is meaningful to theolder person and sensitive to their efforts to analyse and managetheir situation. These efforts are often revealed in narrativeform as the person tells their story which, in an agency-centredassessment, is easily overlooked or even ignored. 相似文献
87.
Corporate Governance and the Governance of Innovation: The Case of Pharmaceutical Industry 总被引:2,自引:0,他引:2
The paper focuses on some organizationaldynamics that have characterized the pharmaceuticalindustry in the last thirty years, whenbiotechnology and the development of lifesciences have defined a new technologicalparadigm, reshaping many aspects of theindustry, especially the organization ofinnovative activity. We suggest an original interpretation of someorganizational settings, as the increasedimportance of skilled scientists within firmsand the development of inter-organizationalalliances for the division of scientific labor.Following recent theorizing on corporategovernance issues, which points out theintrinsic organizational and relationaldimensions of the resource allocation processesand strategic decision-making, we propose a roleof the organizational practices mentioned aboveon corporate governance, and, in turn, aninfluence of different governance arrangementson innovative activity. We recall moretraditional approaches to the analysis ofcorporate governance, and give a broaderinterpretation to the relevant variablesproposed. Further, relying on more recenttheories and on literature on firm's boundariesand sectoral systems of innovation, we proposeindustry-specific variables forpharmaceuticals, including internal settings aswell as relations with external actors.Preliminary empirical support is given to ourhypotheses, concerning a panel of large USpharmaceutical companies. 相似文献
88.
S. J. Richards 《Journal of the Royal Statistical Society. Series A, (Statistics in Society)》2008,171(1):279-298
Summary. Late life mortality patterns are of crucial interest to actuaries assessing risk of longevity, most obviously for annuities and defined benefit pension schemes. The stability of public finances is also affected, as the governments have very substantial risk of longevity in the form of state benefits and public sector pension schemes. One important explanatory variable for late life mortality patterns is year of birth. Previous work has demonstrated various techniques for detecting such patterns, but always with long time series of mortality rates. The paper describes two alternative ways to detect such patterns, even with missing population data or the absence of a time series. The paper finds support for the idea that different birth cohorts have different rates of aging. 相似文献
89.
90.
Vivian Yi-Ju ChenVernon M. Chinchilli Donald St. P. Richards 《Journal of statistical planning and inference》2011,141(2):924-936
A new class of generalized correlation coefficients that contains the Pearson and Kendall statistics as special cases was defined by Chinchilli et al. (2005) and applied to the estimation of correlations coefficients within the context of 2×2 cross-over designs for clinical trials. In this paper, we determine the infinitesimal robustness and local stability properties of these generalized correlation coefficients by deriving their corresponding influence functions. For cases in which the population distribution is a bivariate normal or a mixture of bivariate normal distributions we obtain explicit formulas, and establish monotonicity and sign-reverse rule properties of the generalized correlation coefficients. 相似文献