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排序方式: 共有150条查询结果,搜索用时 78 毫秒
61.
Ant colony optimization for disaster relief operations 总被引:7,自引:0,他引:7
Wei Yi Arun Kumar 《Transportation Research Part E: Logistics and Transportation Review》2007,43(6):660-672
This paper presents a meta-heuristic of ant colony optimization (ACO) for solving the logistics problem arising in disaster relief activities. The logistics planning involves dispatching commodities to distribution centers in the affected areas and evacuating the wounded people to medical centers. The proposed method decomposes the original emergency logistics problem into two phases of decision making, i.e., the vehicle route construction, and the multi-commodity dispatch. The sub-problems are solved in an iterative manner. The first phase builds stochastic vehicle paths under the guidance of pheromone trails while a network flow based solver is developed in the second phase for the assignment between different types of vehicle flows and commodities. The performance of the algorithm is tested on a number of randomly generated networks and the results indicate that this algorithm performs well in terms of solution quality and run time. 相似文献
62.
Analysing the stakes of stakeholders in research and development project management: a systems approach
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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
63.
Chun‐Hao Chang Ajeet Jain Edward R. Lawrence Arun J. Prakash 《The Financial Review》2016,51(3):329-362
The Small Business Job Protection Act of 1996 allows U.S. banks to adopt the Subchapter S status. We investigate if the Subchapter S banks use tax benefits for the intended purposes of “protecting jobs,” “creating opportunities” and “increasing take home pay of workers.” We find that the tax benefits: (a) are not used in expenses related to protection of jobs, (b) do not lead to greater employment opportunities within the Subchapter S banks, and (c) do not benefit the employees in the form of increased salaries and benefits. Our results indicate that bank owners are sole beneficiaries of the tax exemption benefits. 相似文献
64.
Arun T. M. Puneet Kaur Alberto Ferraris Amandeep Dhir 《Business Strategy and the Environment》2021,30(4):2224-2240
Issues regarding green restaurants have received significant scholarly and practitioner attention in the last decade, particularly concerning why consumers adopt green restaurants. Although several reviews exist on green hospitality, a comprehensive review of the literature on consumers' green restaurant adoption is currently lacking. The following systematic literature review examines 50 research studies published on the consumer adoption of green restaurant services to address this gap accordingly. Through a detailed content analysis, the research profile and thematic analysis are presented. The review further identifies four key thematic foci: (a) consumer behavior variables studied, (b) antecedents internal to the consumer, (c) antecedents due to the perception of external factors, and (d) moderators. Limitations and gaps from each of the themes are offered with potential future research questions. The novelty of the review lies in the development of a “green restaurant adoption research framework” that cuts across multiple theoretical perspectives to summarize why consumers adopt green restaurant services. 相似文献
65.
Outsourcing has been a prominent aspect of business strategies in the last three decades. Outsourcing of manufacturing processes is now complemented with outsourcing of various marketing process as well. More importantly, outsourcing to foreign locations — offshoring — has increased for marketing processes in recent years. In this context, the present paper develops a model that identifies the types of marketing interactions and processes that can be offshored in business-to-business markets. We suggest that the decision to offshore marketing processes and interactions depend upon the interaction process that is preferred and the importance of interaction process itself. Marketing interactions that are not critically important and/or those that can be performed through technology can be easily offshored. However, other marketing processes need to be examined in depth before being offshored. Implications for research and practice in the area of offshoring, as well as in the broader area of outsourcing, are also highlighted. 相似文献
66.
Richard J. Boland Jr. Arun K. Sharma Paulo Srgio Afonso 《Accounting, Organizations and Society》2008,33(7-8):899-914
Path-creating change in organizational form is proposed as an important element in achieving management control in hybrid organizations. Using case examples from large-scale projects in the architectural, engineering, and construction industry, as well as from joint ventures in the oil and gas industry, we highlight the role of mindfully synthesizing new organizational forms in the design of management control systems. A series of paradoxes is disclosed, in which attempts to achieve control through mimetic adoption of established management control techniques lead to reduced control. On the other hand, path-creating deviations from institutionalized practices, resulted in improved project and venture performance. It has been argued that the design of inter-organizational management control systems seeks to enable organizations to compete for resources and efficiency, and also to obtain institutional legitimacy. Institutional theory proposes that isomorphism permits organizations to obtain that legitimacy and explains their design. In this paper, we propose that path creation and morphogenesis, which deviates from isomorphism, is an additional consideration in explaining management control system design. 相似文献
67.
This paper provides for the first time a clear quantitative link between agricultural productivity and poverty among rural households in Nepal. Using data from a nationwide Nepal Living Standard Survey 2004, we first estimate household‐specific productivity per worker under both Cobb–Douglas and translog production functions. Second, the paper identifies the determinants of productivity. Third, we explore a theoretical link between productivity and poverty using Sen's poverty index and find empirically that productivity growth substantially helps poverty reduction. Finally, the integrated effects of changes in productivity determinants are found to be stronger than the outcomes of sectoral policies taken in isolation. 相似文献
68.
The impact of the product to service shift in industrial markets and the evolution of the sales organization 总被引:1,自引:0,他引:1
Marketing is undergoing a paradigmatic shift that involves a change in focus from the exchange of goods, which are usually manufactured output, to providing a service, which is fundamental to economic exchange (Vargo & Lusch 2004).Evidenced by three decades of marketing transformation in B2B (business-to-business) sales organizations, this paper examines the evolution of sales organizations as a result of the shift from product- to service-focused commerce. This paper also identifies areas of future research and practice in marketing. Findings suggest that the traditional product-focused sales organization will evolve in two directions. First, enhanced use of technology will reduce some traditional sales functions and even face-to-face contact. Second, customers who are important to marketers will experience improvements in the level of customer contact—leading to growth in customer-focused sales organizations and an increase in global account management teams. Changes in sales organizations will also lead to changes in the selection, training, and recruitment of salespeople as well as their roles.Direction for future research and managerial implications are highlighted throughout the paper as are changes likely to occur in sales organizations. 相似文献
69.
We investigate the gender difference in financial risk aversion using a survey of finance professors from universities across the United States. We compare their actual portfolio allocations to that of respondents in the Federal Reserve's Survey of Consumer Finances (SCF). We find that among highly educated individuals, women are significantly more risk averse than men. However, we find that when men and women have both attained a high level of financial education, they are equally likely to invest a significant portion of their portfolio in risky assets, suggesting that financial education mitigates the gender difference in financial risk aversion. 相似文献
70.
The use of stochastic models and performance measures for the analysis of real life queuing scenarios are based on the fundamental
premise that parameters values are known. This is a rarity since more often than not, parameters are usually unknown and require
to be estimated. This paper presents techniques for the same from Bayesian perspective. The queue we intend to deal with is
the M/M/1 queuing model. Several closed form expressions on posterior inference and prediction are presented which can be
readily implemented using standard spreadsheet tools. Previous work in this direction resulted in non-existence of posterior
moments. A way out is suggested. Interval estimates and tests of hypothesis on performance measures are also presented. 相似文献