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101.
102.
I.W Sandberg 《Journal of Economic Theory》1974,8(2):248-258
For a nonlinear version of the linear input-output model of Leontief, we consider the effect, on the vector x of total gross outputs, of changes in the components of the final-demand vector c. For example, it is shown that, for a certain important class of models, the “large-change elasticity” of any component of x, with respect to any component of c, is less than or equal to unity. Some similar results are proved concerning properties of nonlinear price-demand relations for the case in which all goods are weak gross substitutes. Unlike earlier work in this general area, we do not introduce hypotheses concerning the indecomposability or homogeneity of certain mappings. For that reason, the results are valid for the price-demand relation for a single firm, or for any collection of firms. 相似文献
103.
The paper analyses the dynamics of some duopoly output games involving the Cournot, Market-Share and Nichol strategies. The model assumes linear price and cost functions and supposes that outputs are adjusted instantaneously at discrete time intervals. For all games considered, equilibrium is either reached after a finite number of moves or a stable approach to equilibrium occurs as t → ∞. In fact, apart from a few uninteresting cases, arising from the oversimplified form of the Market-Share strategy, all equilibrium points lie on specified parts of the firms' Cournot loci. 相似文献
104.
105.
This paper examines the effects of introducing competition into monopolized network industries on prices and infrastructure
quality. Analyzing a model with reduced-form demand, we first show that deregulating an integrated monopoly cannot simultaneously
decrease the retail price and increase infrastructure quality. Second, we derive conditions under which reducing both retail
price and infrastructure quality relative to the integrated monopoly outcome increases welfare. Third, we argue that restructuring
and setting very low access charges may yield welfare losses, as infrastructure investment is undermined. We provide an extensive
analysis of the linear demand model and discuss policy implications. 相似文献
106.
Vijay Mahajan Herman W. Lay Chair Professor of Marketing 《Technological Forecasting and Social Change》1985,28(1):13-27
In order to assess the impact of patent infringement on the growth of a new product, a model is developed through the intervention model development processes of Box-Jenkins and Box-Tiao. Physical interpretations of model parameters and determination of associated damages suggest that the model can provide a sound basis for analyzing patent infringement disputes. 相似文献
107.
This paper models the London stock markets response to the 1994 Periodic Review of prices in the English and Welsh water industry using both GARCH and stochastic volatility models. The results indicate that a significant reduction in the volatility of share prices for eight of the ten water and sewerage companies followed the announcement of revised industry price-caps. Investor expectations adjusted rapidly, reflecting confidence in the credibility and political sustainability of the settlement. 相似文献
108.
This paper presents empirical evidence that bond mutual funds which have adopted the use of 12b-1 fees have not achieved the goal of lowering expense ratios. Using a model specific to bond funds, as opposed to generic models used in previous studies on equity funds, the analysis confirms that the 12b-1 fee is an additional cost borne by shareholders of the fund without any additional benefit. However, this cost as a percent of the net asset value of the fund has decreased from 1991 through 1994. This reduction coincides with the submission of a proposed rule change by the National Association of Security Dealers concerning maximum sales charges imposed by mutual funds on December 28, 1990 and the implementation of limits on 12b-1 fees which became effective in July of 1993. 相似文献
109.
Action Research is Similar to Design Science 总被引:2,自引:0,他引:2
Pertti Järvinen 《Quality and Quantity》2007,41(1):37-54
In management information systems (MIS) action research is long considered as promising but low-level research approach. It
has an utmost relevance because action researchers are working with practitioners to solve the important practical problem.
Design science outlined some years ago is just winning a wider audience. Action research was traditionally classified into
qualitative research methods. But it seems to be the “wrong” home of action research. We shall show that after comparison
of the seven aspects: concrete results of the study, knowledge produced, activities, the intent and the nature of a study,
the division of labor in a study and generation, use and test of knowledge, the concordance between the characteristics of
action research on the one hand and of design science on the other hand is very good. Hence, action research and design science
should next be considered as similar research approaches, and this is a turning point in the history of both action research
and design science. 相似文献
110.
Craig KW 《Hospital materiel management quarterly》1992,13(3):78-88
The success of any manager depends highly on the ability to seize on opportunities that will achieve the organization's goals. Hospitals are currently searching for ways to reduce costs while maintaining or enhancing the quality of services. Quality services are increasingly being defined as those that are most responsive to customer needs. It is important, as hospital management restructures materiel systems or methods of operation for reduced costs, to focus on the user departments as the customers. The consolidation of materiel management activity should not be seen as a loss of control at the user department level. Instead it can be seen as a new way of providing service with higher quality. User departments should see concrete benefits on a weekly basis, including reduced time spent on materiel management functions; increased planning of purchasing, inventory, and distribution functions; and assistance in meeting restricted supply budgets. 相似文献