having a full understanding of the world’s social-economic situation is the success key for industries automotive manufacturing industry is an extremely competitive one usually there is no clear guideline among automotive companies about technological causes behind their success and failure. this research provides an investigation about the world’s economic situation and the environmental situa...

BACKGROUND The need for institutional long-term care is increasing as the population ages and the pool of informal care givers declines. Care services are often limited when funding is controlled publicly. Fees for Japanese institutional care are publicly fixed and supply is short, particularly in expensive metropolitan areas. Those insured by universal long-term care insurance (LTCI) are faced...

In this lecture we present a few key results in production planning with known time-varying requirements under convex or concave production costs. Convex production costs arise when we need to utilize increasingly more expensive resources to achieve higher levels of production. As an example, consider a factory with a regular workforce. If demand is beyond the capacity of the regular workforce,...

In this section we numerically extend the analytical insights regarding heterogeneous unreliable Tier 2 suppliers derived in the main text to a more general case in which Tier 2 suppliers may di↵er in both procurement cost and disruption risk, which we denote cj and j , j = 1, 2. As in the main text, we assume that 1  2, but the cost parameters may be ordered in any way. Our chief goal is to c...

In this study, we focus on a multi-stage supply chain system that operates under a JIT (just-intime) delivery policy. Kanbans play an important role in the information and material flows in a supply chain system. Thus, a kanban mechanism is employed to assist in linking different production processes in a supply chain system to implement the scope of JIT philosophy. We develop an optimal model ...