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991.
David C. Hyland 《Journal of Economics and Finance》2008,32(3):294-310
The corporate diversification literature presents a puzzle. Short-horizon event studies report positive abnormal returns around
the announcement of a diversifying event, while studies that examine diversified firms find evidence that diversified firms
are worth less than specialized firms (a diversification discount). If diversification is value destroying, perhaps the destruction
occurs over longer periods than have been previously tested. This paper tests the hypothesis that diversifying firms have
negative long-run abnormal performance following diversification by examining a sample of specialized firms that have a diversifying
event from 1978 through 1998. The firms are tracked for up to five years past their diversification year. There is evidence
that value is destroyed for small firms that diversify but enhanced for larger firms that diversify.
相似文献
David C. HylandEmail: |
992.
Ajesh George Margaret H. Vickers Lesley Wilkes Belinda Barton 《Employee Responsibilities and Rights Journal》2008,20(3):165-176
This paper shares some pertinent findings from an initial, qualitative stage of a larger, national study currently being undertaken
in Australia, exploring the support needs of parents who are working full time and caring for a child with chronic illness.
The findings presented here depict the negative impact of these parents caring responsibilities on their work life and the
increased stress they experience trying to maintain full time employment. In-depth interviews revealed how these parents had
to rearrange their working hours, use up their leave entitlements, work unsatisfactory hours, sacrifice their careers and
even change their jobs in order to balance their dual roles. In addition, the findings also highlight the negative and unsupportive
attitude that employers had towards these parents. These employment conditions were extremely stressful and frustrating for
parents affecting their physical and emotional well being. 相似文献
993.
Paul Schweinzer 《Review of Economic Design》2008,12(2):119-127
We consider a Rothschild–Stiglitz–Spence labour market model and employ a centralised mechanism to coordinate the efficient
matching of workers to firms. This mechanism can be thought of as operated by a recruitment agency, an employment office or
head hunter. In a centralised descending-bid, multi-item procurement auction, workers submit wage-bids for each job and are
assigned stable jobs as equilibrium outcome. We compare this outcome to independent, sequential hiring by firms and conclude
that, in general, a stable assignment can only be implemented if firms coordinate to some extent.
相似文献
994.
We survey and assess the empirical literature on the sources of corruption Thanks to the improved availability of data, we
are able to produce an improved cross-country econometric model to test well-established and more recent hypotheses jointly.
We do not find that the common law system, or a past as a British colony predicts corruption. Our results support cultural
theories on the causes of corruption, and suggest that a medium-long exposure to uninterrupted democracy is associated with
lower corruption levels, while political instability tends to raise corruption. Our results also suggest that the diffusion
of newspapers helps to lower corruption levels.
相似文献
995.
John C. Goodale Donald F. Kuratko Jeffrey S. Hornsby 《Journal of Operations Management》2008,26(5):669-688
Professional service firms have distinct operational challenges due to the type of work that is transacted by the employees of these firms, and due to the nature of the employees themselves. In this paper, we develop and present factors that influence professional service operations in firms and compensation structures for professional service providers. We establish professional service influence factors, which we posit will impact agency relationships in professional service firms. That is, we hypothesize that professional service influence factors (PSIFs) will moderate the effect of task programmability and outcome measurability in predicting the use of behavior- or outcome-based compensation schemes (control strategy). Logistic regression is used on data provided by 192 professional service providers in order to examine the impact of the agency variables and moderating factors on control strategies. The results indicate that company- and profession-based factors have moderating effects on task programmability when predicting control strategy. We discuss the implications of our findings. 相似文献
996.
997.
Searching for efficient networks can prove a very difficult analytical and even computational task. In this paper, we explore
the possibility of using the genetic algorithms (GA) technique to identify efficient network structures in the case of non-trivial
payoff functions. The robustness of this method in predicting optimal networks is tested on the two simple stylized models
introduced by Jackson and Wolinsky (1996), for which the efficient networks are known over the whole state space of the parameters’
values. This approach allows us to obtain new exploratory results in the case of the linear-spatialized connections model
proposed by Johnson and Gilles (Rev Econ Des 5:273–299, 2000), for which the efficient allocation of bilateral connections
is driven by contradictory forces that push either for a centralized structure around a coordinating agent, or for only locally
and evenly distributed connections.
Murat Yıldızoğlu gratefully acknowledges the support of the CCRDT program of Aquitaine Region. 相似文献
998.
For Poisson inverse Gaussian regression models, it is very complicated to obtain the influence measures based on the traditional
method, because the associated likelihood function involves intractable expressions, such as the modified Bessel function.
In this paper, the EM algorithm is employed as a basis to derive diagnostic measures for the models by treating them as a mixed Poisson regression
with the weights from the inverse Gaussian distributions. Several diagnostic measures are obtained in both case-deletion model
and local influence analysis, based on the conditional expectation of the complete-data log-likelihood function in the EM algorithm. Two numerical examples are given to illustrate the results. 相似文献
999.
We introduce the job crafting competency construct and apply it to predict tradeoffs between competing outcomes that are inherent in job crafting, like performance and well-being or engagement and withdrawal. Job crafting competencies are the clusters of individual knowledge, skills, and abilities that are necessary to achieve personal objectives through effective job crafting problem-solving. We create a framework of job crafting competencies consisting of comprehensive/simplistic heuristic information use and approach/avoidance problem-solving skills. In Study 1, we operationalize competencies as profiles demonstrated through an aptitude-oriented assessment that predicts differences in outcomes. Five distinct profiles emerged in a sample of 174 workers. The high-volume analytic problem-solving profile was associated with higher performance and strain, while the ambivalent acquiescence profile was associated with lower performance and strain. The practical problem-solving profile minimized tradeoffs between performance and strain. Rapid problem-solving and low-volume analytic problem-solving profiles were variants in between these other patterns. Study 2 used a survey of 323 workers to support the uniqueness of the five competencies, and their relationships with approach/avoidance job crafting, engagement, and withdrawal. The research identifies a new job crafting individual difference (job crafting competencies) to delineate outcomes and tradeoffs according to unique competency profiles. 相似文献
1000.