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101.
Measurements of utility functions over life years provide useful information for decision making in the health care field. However, biases in the assessment procedures of utility functions is a well-known and documented phenomenon. In this paper we investigate possible biases in the assessment of utility functions when two different methods (direct and indirect assessment) are used. More specifically, we examine the estimation of utility functions over different lengths of life. The main findings, obtained from an empirical investigation in which the two assessment techniques were applied to a sample of students, are: (a) the use of the different methods does not lead to significant differences in the utility evaluation from a social point of view (health program evaluation); (b) the use of the different methods does lead to significant differences in the utility evaluation from an individual point of view (clinical decision making); (c) in both methods risk aversion was found to be common for shorter periods of time while risk prone behavior, when it exists, was found mainly for longer periods of time. 相似文献
102.
Governments use a range of instruments to influence television content. The paper finds that under plausible conditions, content
measures ostensibly designed to increase the production of certain programs may, paradoxically, reduce the size of the audience
watching them. As well, quotas seemingly intended to boost the audience of certain programs, may in fact reduce their production
and lower the number of viewers of these programs.
相似文献
103.
Organizational resilience is a subject of great interest to management and strategy scholars. Drawing on over 1,000 years of historical data on the Republic of Rome, and focusing primarily on the period of its establishment (509 BC–338 BC), we identify two generic strategies, capture and governance, that together are essential for organizational resilience. Capture strategy relates to market expansions, while governance strategy refers to the capacity of an organization to assimilate, retain, defend, and increase its dominance within annexed markets. The history of Rome also reveals four supporting tactics—saving power, maintaining a stronghold base, isolating and weakening adversaries, and creating forward outposts—that shore up and reinforce the capture and governance strategies, to create a more enduring and resilient enterprise. Interestingly, a system‐wide view of the strategy‐tactic framework also offers insights on resilience through smallness, thus illustrating its conceptual utility to organizations of all sizes including small enterprises. Copyright © 2010 John Wiley & Sons, Ltd. 相似文献
104.
Most consumers benefit from a lowering of the required amount of aurous metal which jewellers must include in products sold as gold. However, profits of producers of gold-plated adornments fall. The net welfare effect depends on whether the principal difference between consumers is their appreciation of the gold content, or their valuation of designation gold or gold-plate. 相似文献
105.
Using data envelopment analysis to evaluate efficiency in the economic performance of Chinese cities 总被引:24,自引:0,他引:24
This paper studies the use of DEA (data envelopment analysis) as a tool for possible use in evaluating and planning the economic performance of China's cities (28 in all) which play a critical role in the government's program of economic development. DEA promises advantages which include the absence of any need for the assignment of weights on an a priori basis (to reflect the supposed relative importance of various outputs or inputs) when evaluating technical efficiency. It is also unnecessary to explicitly specify underlying functions that are intended to prescribe the analytical form of the relations between inputs and outputs. Finally, as is illustrated in the paper, DEA can be used to identify sources, and estimate amounts of inefficiencies in each city's performance as well as to identify returns-to-scale possibilities in ways that seem well-suited to the mixture of centralized and decentralized planning and performance that China is currently trying to use. 相似文献
106.
Analysing the stakes of stakeholders in research and development project management: a systems approach 下载免费PDF全文
Arun Abraham Elias 《R&D Management》2016,46(4):749-760
Research and development (R&D) project management involves managing multiple stakeholders with conflicting stakes. This article proposes a systems approach to capture such conflicting stakes of multiple stakeholders in controversial R&D projects. The approach is illustrated using a New Zealand case study related to the use of 1080 chemical for pest management. Initially, the problem situation was structured systemically by analysing the behaviour of the main variables and by conducting a stakeholder analysis. Further, a participative systems model related to the problem situation was developed using a group model‐building process. The analysis of the model revealed a set of feedback loops operating in the system identified as constituting and responsible for the complexity of the problem situation relating to 1080 use. In conclusion, the paper highlights some strategies suggested by the stakeholders to manage conflict. 相似文献
107.
Min-Ming Wen H. J. Abraham Lin Patricia H. Born Charles Yang Chun Wang 《North American actuarial journal : NAAJ》2018,22(2):309-322
This study proposes and demonstrates a dynamic factor model that can be empirically carried out by the utilization of a factor-augmented autoregressive technique to explain and forecast the time-varying patterns of cash flows of insurance companies in the United States. A principal component approach is employed in the Factor-Augmented Autoregressive Model (FAARM) to capture the augmented factors that are to be utilized for forecasting. We describe the cash flow statistical model by a dimension-reduction technique that can depict the dynamic patterns of the cash flows of insurance firms and then measure the FAARM model. Results from the first step (principal component analysis) help capture the macroeconomic variables and the variables pertaining to insurance companies' cash flows, namely, cash flows from investment, underwriting, and risk management activities. Results from the second step offer evidence supporting that the FAARM improves the out-of-sample forecasting accuracy assessed by a forecasted root-mean-squared error (FRMSE). This article presents a set of feasible FAAR models from which an insurance firm can choose one that can be a better fit to the firm corresponding to its specific firm characteristics, such as firm size. Consequently, the chosen FAARM(s) can improve the accuracy of cash flow forecasting and thus can help insurers to manage risk via cash-flow–matching techniques. 相似文献
108.
109.
Abraham Sin Oih Yu Paulo S. Figueiredo Paulo Tromboni De Souza Nascimento 《Journal of Product Innovation Management》2010,27(2):253-266
Overcommitment of development capacity or development resource deficiencies are important problems in new product development (NPD). Existing approaches to development resource planning have largely neglected the issue of resource magnitude required for NPD. This research aims to fill the void by developing a simple higher‐level aggregate model based on an intuitive idea: The number of new product families that a firm can effectively undertake is bound by the complexity of its products or systems and the total amount of resources allocated to NPD. This study examines three manufacturing companies to verify the proposed model. The empirical results confirm the study's initial hypothesis: The more complex the product family, the smaller the number of product families that are launched per unit of revenue. Several suggestions and implications for managing NPD resources are discussed, such as how this study's model can establish an upper limit for the capacity to develop and launch new product families. 相似文献
110.
Fabio Wendling Muniz de Andrade Abraham Laredo Sicsú 《Latin American Business Review》2013,14(3):75-91
ABSTRACT We propose a credit risk model for consumer loan portfolios in Brazil. Consumer profiles and the risk classification of credit operations are used to segment the portfolios. Credit loss distributions for each segment are selected and used in a Monte Carlo simulation process to generate the loss distribution of the portfolios. The dependence among the credit losses in the different segments of the portfolios is modeled through an elliptical copula function. Statistical tests are done and show that the proposed model is adequate to represent credit loss distributions in consumer credit in Brazil. RESUMEN.Proponemos un modelo para los créditos de riesgo de la cartera de préstamos al consumidor en Brasil. Los perfiles del consumidor y la clasificación del riesgo de las operaciones crediticias se utilizan para segmentar la cartera. La distribución de las pérdidas de los créditos de cada segmento se seleccionan e utilizan en un proceso de simulación Monte Carlo, para generar la distribución de las pérdidas de la cartera. La dependencia entre la pérdida del crédito en los diferentes segmentos de la cartera se modela utilizando una función de cópula elíptica. Las pruebas estadísticas se realizan y muestran que el modelo propuesto es apropiado para representar la distribución de la pérdida de crédito en el ramo de los créditos a los consumidores en Brasil. RESUMO.Propomos um modelo de crédito de risco para portfólios de empréstimos ao consumidor, no Brasil. O perfil dos comsumidores e a classificação de risco das operações de crédito são usados para segmentar o portfólio. As distribuições de perda de crédito para cada segmento são selecionadas e usadas num processo de simulação Monte Carlo, para gerar a distribuição da perda do portfólio. A dependência entre a perda do crédito nos diferentes segmentos do portfólio é determinada por uma função de cópula elítica. Testes estatísticos foram realizados e demonstram que o modelo proposto é adequado, para representar as distribuições de perda de crédito no crédito ao consumidor, no Brasil. 相似文献