This article is an attempt to obtain a compromise allocation of a reliability optimization problem in case of maintenance components and in case of redundancy. In first case, time taken and the cost spent on system maintenance is minimized simultaneously for the required reliability R* (say) and in case second cost, weight and volume of the system is minimized simultaneously for the required re...

Morton layout is a compromise storage layout between the programming language mandated layouts row-major and column-major, providing substantial locality of reference when traversed in either direction. This paper explores the performance of Morton, row-major and column-major layouts in detail on some representative architectures. Using a small suite of dense kernels working on two-dimensional ...

This paper presents a new multi-objective mathematical model for the redundancy allocation problem with the choices of a redundancy strategy and component type in series-parallel systems. The model considers entropy measure which is a measure of uncertainty in the information theory. For the first time, the model maximizes the reliability and entropy of the system and minimizes the nonlinear co...

i This paper describes a solution technique mr Linear Programming problems with multiple objective functions. In this type of problem it is often necessary to replace the concept of "optimgm" with that of "best compromise". In contrast with methods dealing with a priori weighted sums of the objective functions, the method described here involves a sequential exploration of solutions. This explo...

This study proposes a two-stage process of multi-criteria decision making approach to budgeting for efficient sectoral allocation. The two approaches of Multi-Criteria Decision Analysis (MCDA) used are Analytical Hierarchy Process (AHP) and Goal Programming (GP). The former takes care of an important aspect known as participatory budgeting while the latter handles the optimization aspect which ...

In this paper, we considered decision processes in which one decision is made in each process. We incorporate the utility function concept into the decision process, derived the utility function in fuzzy events and by the max-product operation obtained the utility possibility measure of the fuzzy events. In cases with numerous decision processes, the optimum action can be determined from the re...

introduction: toxoplasmosis is a parasitic infection cause by toxoplasma gondii. this parasite is associated with congenital infection and can cause abortion, encephalitis or systemic infection in immune- compromised patients. case presentation in this study, two cases of central nervous system toxoplasmosis in leukemia patients are reported. the first case was a 15-year-old girl with acute lym...

The alternative soil tillage technology plays an important role in the development of a sustainable agriculture. The use of traditional technology gives the farmers a positive expected income. With the use of an alternative soil tillage technology, the expected income considerably rises together with the income risk. Combinations of income and risk revealed that the use of traditional technolog...

Article history: Received October 2, 2012 Accepted December 3, 2012 Available online December 3 2012 In this paper, we examine advanced optimization approach for portfolio problem introduced by Black and Litterman to consider the shortcomings of Markowitz standard Mean-Variance optimization. Black and Litterman propose a new approach to estimate asset return. They present a way to incorporate t...

In this paper we investigate a multi-objective portfolio selection model with three criteria: risk, return and liquidity for investors. Non-probabilistic uncertainty factors in the market, such as imprecision and vagueness of investors’ preference and judgement are simulated in the portfolio selection process. The liquidity of portfolio cannot be accurately predicted in the market, and thus is ...