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311.
The mean‐variance formulation by Markowitz in the 1950s paved a foundation for modern portfolio selection analysis in a single period. This paper considers an analytical optimal solution to the mean‐variance formulation in multiperiod portfolio selection. Specifically, analytical optimal portfolio policy and analytical expression of the mean‐variance efficient frontier are derived in this paper for the multiperiod mean‐variance formulation. An efficient algorithm is also proposed for finding an optimal portfolio policy to maximize a utility function of the expected value and the variance of the terminal wealth. 相似文献
312.
Irene Ng 《The Service Industries Journal》2013,33(3):469-482
This paper investigates an integrated form of revenue management through the case of Empress Cruise Lines (ECL). The case highlights a multidisciplinary approach towards how demand and supply factors should be integrated in the form of four decision sets in revenue management decisions – the value set, the segmentation set, the sensitivity set and the forecasting/allocation set. Also, the use of mechanism design allows the firm to separate markets for better forecasting of revenue from each segment. The case also shows that segments could be incentivized to behave differently, and to behave in alignment with ECL's policies so that capacity could be optimally allocated and revenue maximized. 相似文献
313.
Drawing on strategic choice theory, we investigate the influence of CEO leadership styles and personal attributes on the implementation
of organizational diversity management practices. Specifically, we examined CEO transformational and transactional leadership
in relation to organizational diversity practices and whether CEO social values and age may moderate these relationships.
Our results suggest that transformational leadership is most strongly associated with the implementation of diversity practices.
Transactional leadership is also related to the implementation of diversity management practices when either CEO social values
or age are relatively high. These findings extend previous work examining predictors of diversity management in organizations
and highlight the central role that organizational leaders may play in the successful implementation of these practices. 相似文献
314.
315.
Wing Lon Ng 《The Journal of Financial Research》2010,33(1):27-43
I analyze the dynamic trading behavior of market participants by developing a bivariate modeling framework for describing the arrival process of buy and sell orders in a limit order book. The model contains an extended autoregressive conditional duration model with a flexible generalized Beta distribution to explain the duration process, combined with a dynamic logit model to capture the traders' order submission strategy. I find that the state of the order book as well as the speed of the order arrival have a significant influence on the order placement, inducing temporal asymmetric market movements. 相似文献
316.
The study advances knowledge in the field of business strategy and the environment by incorporating mindfulness theory into the research on socioemotional wealth (SEW) and its environmental consequences in family businesses. Using an integrative model, the paper investigates the relationship between mindfulness SEW dimensions and family firms' environmental strategies, specifically in developing sustainable products and processes. This study also proposes the firm's capabilities as a mediator in this relationship, while market turbulence is a moderator in the relationship between the firm's capabilities and sustainable products and processes. The empirical results show that in protecting SEW, specifically in the identification of family members with the firm and binding social ties, mindfulness provides a rich endowment that develops appropriate capabilities to produce sustainable products and processes. While the moderating role of market turbulence is insignificant, we can infer that irrespective of how turbulent (or not) the market is, the firm's capabilities are a key determinant of sustainable products and processes. Our findings offer theoretical and managerial implications for sustainable practices in the family business context. 相似文献
317.
318.
Chen Feng Ng 《Journal of urban economics》2008,63(1):116-129
Observed commuting distances generally exceed those predicted by standard models of household location choice. This paper develops a model with locational amenities and two job centers. It is shown that differences in household preferences for amenities can lead to various types of residential location patterns, some of which result in higher average commuting distances in the city. 相似文献
319.
To identfy the R&D and marketing strategies adopted by by biotechnology firms in the UK, a survey was conducted spanning a range of biotechnology firm size, product, organizational arrangemens. and prior experiences with advanced technology. This was done using a comprehensive questionnaire similar to that used in a comparable investigation in the USA. Twenty-three firms active principally engaged in speciality chemicals human diagnostics and agricultural products.The information from the questionnaires was used to analyse the company strategies under three man headings. These were technology acquisitation,marketing and R&D. Companies were charecterized into three clusters within each of these headings. The means of appropriation for different strategies were then examined although the significance of the results was undermined by the small size. Finally, the relationship between R&D and marketing strategies within the same firms was investigated. 相似文献
320.
Unlike institutional or macro‐cultural explanations of competition, competition need not be viewed as a shared social reality. Instead, competition can be interpreted differently by multiple stakeholders of a value chain. However, due to managerial blind spots, such various interpretations of competition are less than apparent to management. Yet explanations of such blind spots are not well documented. Hence, to explain such blind spots, a conceptual model based on overconfidence biases is developed in which managers develop a ‘self‐centered’ view of competition that blinds them from the competitive beliefs of their value chain customers. Differences in competitive beliefs, thus, arise and are argued to contribute to such managerial blind spots. Furthermore, to empirically examine such managerial blind spots, the competitive perceptions held by various members of a swine genetics value chain were surveyed. Through cluster and MANOVA analyses, this study shows that, unlike institutional/macro‐cultural explanations of competition, these members do not share a common consensus of the key attributes and groupings of competition. The implications and contributions of this study are also discussed. Copyright © 2008 John Wiley & Sons, Ltd. 相似文献