background:patient concerns represent opportunities for improvement in orthopaedic care. thisstudy’s objectiveis to identify the nature and prevalence of unsolicited patient complaints regarding orthopaedic care ata tertiary referral hospital. the primary null hypothesis that there are no demographic factors associatedwith complaint types was tested. secondarily we determined if the overall com...

in this paper, the study deals with the lead time and setup reduction problem in the vendor-purchaser integrated inventory model. the cost of capital (i.e., opportunity cost) is one of the key factors in making the inventory and investment decisions. lead time is an important element in any inventory system. the proposed model is presents an integrated inventory model with controllable lead tim...

the impact of installing process control systems can be expected in terms of performance improvements through reduced operating costs.  since these installations impose considerable capital expenditure, the profitability of the new systems should be economically justified. controlled variable trend was reconstructed by a combination of simple waves, which provided a means to simulate the effect...

A real economic growth only comes from increasing quality and quantity of the factors of production. Most production systems produce items which are of imperfect quality. In a production/inventory situation items which are received or produced are not of perfect quality. Thus the presence of defects which is inevitable in a produced/ordered lot is sorted out by the process of screening. Handlin...

In this paper, we examine a joint lot-sizing and process investment problem with random yield and backorders. We allow for inspection and develop stochastic models which provide the optimal inspection and lot-sizing policy as well as the optimal process investment for variance reduction. The process quality loss profile around the target is captured via a modification of the Reflected Normal lo...

new home buyers in united states are becoming more discriminating in their home buying decision. they are demanding quality construction at reasonable prices. the current state of construction market also gives construction buyers more ammunition to be more discriminate when they choose to purchase homes.  to be competitive and remain in business, housing contractors and developers must meet th...

the purpose of this study is to investigate leadership behavior style that will result to success organizational improvement and effective management through implementing strategic initiatives in leadership behavior. there are few leadership studies in iranian private higher education institutions which examined transformational leadership behavior. data for study were collected using the malco...

We consider a supply chain with an upstream supplier who invests in innovation and a downstream manufacturer who sells to consumers. We study the impact of supply chain contracts with upstream innovation, focusing on three different contract scenarios: (i) a wholesale price contract, (ii) a quality-dependent wholesale price contract, and (iii) a revenue-sharing contract. We confirm that the rev...

Poor quality of software has been blamed for poor security of our computer networks in the sense that major viruses and worms exploit the vulnerabilities of such software. However, software vendors have no incentive to improve the quality of their products since they are not directly liable for any loss due to poor quality. Software liability has been intensely discussed among computer scientis...