Optimization of the product portfolio has been recognized as a critical problem in industry, management, economy and so on. It aims at the selection of an optimal mix of the products to offer in the target market. As a probability function, reliability is an essential objective of the problem which linear models often fail to evaluate it. Here, we develop a multiobjective integer nonlinear cons...

Cell formation problem mainly address how machines should be grouped and parts be processed in cells. In dynamic environments, product mix and demand change in each period of the planning horizon. Incorporating such assumption in the model increases flexibility of the system to meet customer’s requirements. In this model, to ensure the reliability of the system in presence of unreliable machine...

A planning procedure to set the constant level of work in process (WIP) for each product type in a job shop operated under CONWIP control is developed. We model the job shop as a single chain multiple class closed queuing network. Given a specified product mix and a total WIP, a nonlinear program bounds the throughput of the network and optimizes the WIP mix. We identify the minimum total WIP t...

Product-mix decision through theory of constraints (TOC) should take into account considerations like the decisionmaker’s (DM) level of satisfaction in order to make product-mix decision a robust one. Sensitivity of the decision made, needs to be focused for a bottle-neck-free, optimal product-mix solution of TOC problem. A membership function (MF) has been suitably designed in the present work...

In this paper, we introduce a new combinatorial optimization problem entitled the color mix (CMP), which is more general case of grey pattern quadratic assignment (GP-QAP). Also, propose an original hybrid genetic-iterated tabu search algorithm for heuristically solving CMP. addition, present both analytical solutions and graphical visualizations obtained solutions, clearly demonstrate excellen...

The Marketing Mix comprises of four decisions which should be considered before launching a product. Firms should plan targeted approach on these four different components and they are Product, Price, and Place & Promotion. All the four variables help the firm in formulating strategic decisions necessary for competitive advantage. The main objective of this article is to describe the importance...

the product rate variation problem minimizes the variation in the rate at which different models of a common base product are produced on the assembly lines with the assumption of negligible switch-over cost and unit processing time for each copy of each model. the assumption of significant setup and arbitrary processing times forces the problem to be a two phase problem. the first phase determ...

Activity-based costing (ABC) and Theory of Constraints (TOC) are popular managerial tools for evaluating product mix decisions. A challenging aspect of the product mix problem involves evaluating joint products. These products involve complex interactions among resources and products and sequential decisions concerning producing joint products and their further processing. ABC and TOC assume th...