In this paper we focus on a continuously deteriorating two units series equipment which its failure can not be measured by cost criterion. For these types of systems avoiding failure during the actual operation of the system is extremely important. In this paper we determine inspection periods and maintenance policy in such a way that failure probability is limited to a pre-specified value and ...

he health care industry is enduring tumultuous upheaval as hospitals, insurers, physician practices and other industry participants reconfigure themselves to thrive in the 21st century. At the same time, health care systems face pressing near-term challenges: deteriorating payer mix, hospital admission declines, reimbursement pressures and the need for massively expensive technology investments...

We consider the following single-machine time-dependent scheduling problem with constraints on the machine availability. There is given a set of independent and deteriorating jobs Jj , 1 ≤ j ≤ n, to be processed on a single machine, starting from time t0 > 0. The processing time pj of job Jj is a proportional function of the starting time Sj of this job, pj = αjSj, where Sj ≥ t0 and deteriorati...

Purpose: The purpose of this paper to develop an inventory model for instantaneous deteriorating items with the consideration of the facts that the deterioration rate can be controlled by using the preservation technology (PT) and the holding cost & demand rate both are linear function of time which was treated as constant in most of the deteriorating inventory model. Design/methodology/approac...

Successful commercial computer systems contain tens of millions of lines of handwritten software, all of which is subject to change as competitive pressures motivate the addition of new features in each release. As a practical matter, quality is not a question of correctness, but rather of how many bugs are fixed and how few are introduced in the ongoing development process. If the bug count is...

In this paper we present an effective recommendation algorithm using a refined neighbor selection and attributes information on the goods. The proposed algorithm exploits the transitivity of similarities using a graph approach. The algorithm also utilizes the attributes of the items. The experiment results show that the recommendation system with the proposed algorithm outperforms other systems...

Highly rated sovereigns have been hard hit by the ongoing international economic crisis. S&P expects economic activity to fall in each of these sovereigns in 2009. Many of sovereigns' fiscal profiles have deteriorated recently because of the global recession and the need to recapitalize parts of their financial systems. In line with the deteriorating economic environment and financial sector pr...