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31 – 40 of over 32000Guang-Xin Gao, Zhi-Ping Fan and Yao Zhang
The purpose of this paper is to develop a method for solving the multiple attribute decision-making (MADM) problem in which the decision maker can provide the five types…
Abstract
Purpose
The purpose of this paper is to develop a method for solving the multiple attribute decision-making (MADM) problem in which the decision maker can provide the five types of attribute aspirations, namely: benefit type with requirements; cost type with requirements; interval type; benefit type; and cost type.
Design/methodology/approach
First, for each type of attribute aspiration, the calculation formula of utility values of alternative concerning attributes is given. Then, using the calculation formulae, the attribute values are transformed into the corresponding utility values. On the basis of this, the overall ranking value of each alternative is calculated. Further, a ranking order of alternatives can be determined according to the obtained overall ranking values.
Findings
Research shows that it is necessary to develop the method for MADM with attribute aspirations. The example shows that the proposed method is applicable.
Practical implications
The proposed method can be applied to the selection of wastewater treatment technologies or other areas.
Originality/value
This paper proposes a new MADM method with multiple types of attribute aspirations. It develops and enriches the existing MADM methods.
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According to Kolm (1998, p. 3), social ethics addresses the question ‘what should be done in society?’ The topic of justice constitutes a very large part of social ethics…
Abstract
According to Kolm (1998, p. 3), social ethics addresses the question ‘what should be done in society?’ The topic of justice constitutes a very large part of social ethics although other virtues are also important. Kolm distinguishes between macro-justice and micro-justice. For the former, Kolm proposes ‘a combination of the three rationales of rights and duties about capacities: process-freedom, partial income equalisation by efficient means, and the satisfaction of basic needs and the alleviation of deep suffering’. Sen (1992, pp. ix, 21–22, 150) argues that ‘a common characteristic of virtually all the approaches to the ethics of social arrangements that have stood the test of time is to want equality of something – something that has an important place in the particular theory’. For example, even libertarian thinkers such as Nozick who are perceived as being anti-egalitarian place importance on people having liberty and hence that equality of liberties is important. Sen's own capability approach ‘has something to offer both to the evaluation of well-being and to the assessment of freedom’.
Matthew Hood, John R. Nofsinger and Kenneth Small
The purpose of this paper is to introduce a non‐normality premium (NNP) to identify the extra return that will compensate an investor for a non‐normal return distribution…
Abstract
Purpose
The purpose of this paper is to introduce a non‐normality premium (NNP) to identify the extra return that will compensate an investor for a non‐normal return distribution. The NNP quantifies the economic significance of non‐normality to complement a statistical significance test of non‐normality, such as the Jarque‐Bera test.
Design/methodology/approach
The NNP is patterned after the risk premium, the amount that compensates an investor for the risk of an investment. The theoretical NNP is examined on the margins with Taylor series approximation and applied to hedge fund data.
Findings
An increase of 1 in the skewness has the same effect on an investor as an increase in the mean of 2.5 basis points per month. An increase of 1 in the kurtosis has the same effect on an investor as a decrease in the mean of 0.15 basis points per month. A sample of 716 hedge funds revealed that while 72 per cent statistically reject normality, only 29 per cent require more than a single basis point per month difference in the mean to compenscate an investor for the non‐normality.
Originality/value
The NNP allows for a valuation on the higher moments (skewness and kurtosis) of an investor's return distribution. The evaluation is tailored to the individual through use of a utility function. Once applied to an alternative investment vehicle, it is learned that rejecting normality is not sufficient grounds to suspect that the non‐normality is important to investors.
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Rodney Stewart and Sherif Mohamed
In recent years, there has been a growing awareness that most decision makers are not only concerned with the financial implications of information technology/system…
Abstract
In recent years, there has been a growing awareness that most decision makers are not only concerned with the financial implications of information technology/system (IT/IS) projects, but they are also concerned with other objectives such as competitive advantage, market share and future growth. Nowadays, multi‐criteria decision‐making methods are gaining importance due to their inherent ability to judge different alternative scenarios for possible selection of the best alternative. This paper provides a decision‐making framework for senior executives when selecting innovative IT/IS projects. The proposed framework is based on the multi‐criteria utility theory (MCUT) combined with information economics principles to select IT/IS project(s) based on “business value” and “risk” criteria. MCUT has the advantage of taking into consideration the decision maker’s preferences in the form of utility functions defined over a set of tangible and intangible criteria. To illustrate the application of the proposed framework, a hypothetical case study is provided, where input elicited from four engineering professionals is used to develop utility functions for a predefined set of selection criteria.
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Irina Farquhar and Alan Sorkin
This study proposes targeted modernization of the Department of Defense (DoD's) Joint Forces Ammunition Logistics information system by implementing the optimized…
Abstract
This study proposes targeted modernization of the Department of Defense (DoD's) Joint Forces Ammunition Logistics information system by implementing the optimized innovative information technology open architecture design and integrating Radio Frequency Identification Device data technologies and real-time optimization and control mechanisms as the critical technology components of the solution. The innovative information technology, which pursues the focused logistics, will be deployed in 36 months at the estimated cost of $568 million in constant dollars. We estimate that the Systems, Applications, Products (SAP)-based enterprise integration solution that the Army currently pursues will cost another $1.5 billion through the year 2014; however, it is unlikely to deliver the intended technical capabilities.
K.G. Durga Prasad, K. Venkata Subbaiah and K. Narayana Rao
– The purpose of this paper is to demonstrate a methodology to design a supply chain with a view to achieve a strategic fit between competitive and supply chain strategies.
Abstract
Purpose
The purpose of this paper is to demonstrate a methodology to design a supply chain with a view to achieve a strategic fit between competitive and supply chain strategies.
Design/methodology/approach
Quality function deployment (QFD)-based optimization methodology is employed to design a supply chain for a product through aligning the competitive and supply chain strategies. Normal boundary intersection (NBI) method is adopted to obtain optimal weights of the supply chain design objectives. Weighted additive model is developed for multi-objective optimization. Utility-based attribute function, which structure the relationship between the elements of competitive and supply chain strategies is established. The utility functions and the information contained in the House of Quality (HOQ) of QFD are used to define the supply chain performance (SCP).
Findings
SCP index is computed using the set of supply chain design objectives obtained by solving the weighted additive model. On the basis of SCP index, the supply chain activities are planned accordingly. An illustrative example is presented in this paper to describe the QFD-based optimization methodology for designing a supply chain.
Originality/value
QFD-based optimization is a novel approach to design a supply chain with a focus on aligning competitive and supply chain strategies.
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Luca Flabbi, James Mabli and Mauricio Salazar
This paper provides household lifetime inequality indexes derived from representative U.S. labor market data. We obtain this result by using estimates of the household…
Abstract
This paper provides household lifetime inequality indexes derived from representative U.S. labor market data. We obtain this result by using estimates of the household search model proposed by Flabbi and Mabli (2012). Inequality indexes computed on the benchmark model shows that inequality in utility values is substantially different from inequality in earnings and wages and that inequality at the cross-sectional level is significantly different from inequality at the lifetime level. Both results deliver original policy implications that would have not been captured without using our approach. In particular, we find that a counterfactual policy experiment consisting in a mean-preserving spread of the wage offers distributions increases lifetime inequality in wages and earnings but not in utility. When comparing inequality at the individual level between men and women, we find inequality in wages and earnings to be higher for husbands than wives but inequality in utility to be higher for wives. A counterfactual decomposition shows that the job offers parameters are the main source of the gender differential.
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