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991.
992.
Peter Smith 《英国管理杂志》1993,4(3):135-151
There is increased interest in the widespread dissemination of outcome performance data to secure enhanced strategic control of public sector organizations. This paper adumbrates the rationale for such schemes, and outlines the potential distortions induced by excessive reliance on outcome-related performance indicators, inferred from experience in the management control and Soviet literature. The paper gives an outline of the performance review process in the United Kingdom National Health Service, and presents the results of a case study of the impact of the publication of outcome performance data in the maternity services. The research detected many of the expected distortions arising from reliance on performance indicator schemes, and concludes that they may have significant dysfunctional consequences. The paper does not however advocate the abandonment of performance audit in the public sector. Instead, it warns that great attention should be given to the managerial incentives implicit in any strategic control scheme, and that the style with which the scheme is applied will have important bearings on its effectiveness. 相似文献
993.
Interest in examining both the uncertainty and variability in environmental health risk assessments has led to increased use of methods for propagating uncertainty. While a variety of approaches have been described, the advent of both powerful personal computers and commercially available simulation software have led to increased use of Monte Carlo simulation. Although most analysts and regulators are encouraged by these developments, some are concerned that Monte Carlo analysis is being applied uncritically. The validity of any analysis is contingent on the validity of the inputs to the analysis. In the propagation of uncertainty or variability, it is essential that the statistical distribution of input variables are properly specified. Furthermore, any dependencies among the input variables must be considered in the analysis. In light of the potential difficulty in specifying dependencies among input variables, it is useful to consider whether there exist rules of thumb as to when correlations can be safely ignored (i.e., when little overall precision is gained by an additional effort to improve upon an estimation of correlation). We make use of well-known error propagation formulas to develop expressions intended to aid the analyst in situations wherein normally and lognormally distributed variables are linearly correlated. 相似文献
994.
995.
Stephen Martin Peter C. Smith 《Journal of the Royal Statistical Society. Series A, (Statistics in Society)》2003,166(3):369-387
Summary. Long waiting times for non-emergency (elective) procedures are a central feature of the UK's National Health Service, with about 1 million people waiting for surgery at any one time. This paper develops empirical models of the demand for and supply of elective surgery which simultaneously determine waiting times. The models are tested by using a panel of annual data for 5499 small areas from 1991 to 1998. Supply and demand functions are estimated for all specialties combined and for seven individual specialties, using panel data methods that incorporate simultaneously determined variables. The elasticity of demand with respect to waiting time varies between specialties but is always quite small. The results are discussed in the light of UK Government policy initiatives designed to reduce waiting times substantially. The analysis suggests that these initiatives will not stimulate demand markedly and therefore stand a good chance of succeeding provided that adequate additional resources are made available. 相似文献
996.
This article is about a method of teamwork in which both the therapist and the consultant are present in the same room as the family. It distinguishes between the therapeutic team of consultant and therapist and the therapeutic system of consultant, therapist and family. It outlines some particular advantages and disadvantages which are present when working in the same room as the family and emphasises the importance of the careful preparation and maintenance of the therapeutic team if its creative potential for the family is to be fulfilled. 相似文献
997.
This study examines the durations of strikes in selected occupations of the public and private sectors of the U. S. economy in the late post-World War II period. It asks whether differences in the legitimacy of unions and the legality of strikes alter the speed with which strikes end. Also, it argues that a curvilinear relationship between the institutionalization of strikes and unions and the termination rates of strikes exists. Data support hypotheses linking both the distribution of power resources and the institutional setting to the termination rates of different types of strikes (e.g., strikes under different contract statuses and over different issues). In general, where strikes are moderately institutionalized and precedents are being set, strikes end more slowly; at very high or very low levels of institutionalization, strikes end more rapidly. 相似文献
998.
A previous residential mobility model (Speare, 1974) assumes an additive relationship between residential satisfaction, desire to move, and mobility. This paper elaborates the model and applies it to intercounty migration. An interaction between community satisfaction and expectations to migrate is hypothesized which distinguishes four groups of decision makers. A survey in Durham, North Carolina and a unique mobility followup over eight years provide the data to test the model and the interaction. Furthermore, using various time periods for identifying migrants offers some methodological insights. Results support Speare’s general formulation but only after the interaction is taken into account. A three-year migration interval is found to be appropriate. 相似文献
999.
Diagnostic tests as residual analysis 总被引:3,自引:0,他引:3
Many applied workers are strongly oriented to residual analysis for assessing model adequacy. Formal test statistics of adequacy however are frequently derived from likelihood theory, particularly through Lagrange Multipliers. In contraGt, the present paper derives the formal statistics by concentrating Upon the distribution of residuals. It is shown that most existing tests can be derived in this way from a few elementary principles of specification analysis. One advantage of this alternative methodology is that it highlights some difficulties in existing approaches and simultaneously indicates a resolution of them; a good example being testing for heteroscedasticity in simultaneous equations. Other issues such as independence and robustness of diagnostic tests are also easily explored within the proposed framework. 相似文献
1000.
F.M. Smith 《Long Range Planning》1982,15(1):19-29
A nation may easily have more than enough of any one commodity though she can never have more than enough of commodities in general: Faced with the possibility of a prolonged recession the introduction of innovations into manufacturing industry is essential. With the likelihood of a declining role for the already industrialized countries—while that of the developing countries will continue to grow as current technologies are still expanding there—an equilibrium will eventually be reached. New technologies must be found to provide the basis for a new growth in the economic cycle. 相似文献