BACKGROUND The Pediatric Quality of Life Inventory (PedsQL) is a child self-report and parent proxy-report instrument designed to assess health-related quality of life (HRQOL) in healthy and ill children and adolescents. It has been translated into over 70 international languages and proposed as a valid and reliable pediatric HRQOL measure. This study aimed to assess the psychometric properties...

To control a production-inventory system, a manager has to consider the variability in demand as well as variability in her production process. Both types of variability corrupt system performance and by alleviating either of them, the manager can improve the performance of the system. There has been a recent trend towards investing in better information systems to provide better advance demand...

CONTEXT The negative effects of childhood overweight and obesity on quality of life (QOL) have been shown in clinical samples but not yet in population-based community samples. OBJECTIVE To determine relationships between weight and health-related QOL reported by parent-proxy and child self-report in a population sample of elementary school children. DESIGN, SETTING, AND PARTICIPANTS Cross-...

Recently, market globalization and competition have forced companies to find alternative means to boost sales and revenue. The use of the cash flow is increasingly becoming a viable alternative for managers to improve their company’s profitability in a supply chain. In today’s business transactions, a supplier usually asks a manufacturer to pay via the advance-cash-credit (ACC) payment scheme i...

This paper reports on how top EFL students foster oral communication strategies (OCSs) throughout their 4-year English program at the university level. It is a cross-sectional study of 40 EFL learners enrolled in the Department of English, Faculty of Education, Taiz University, Yemen. Data were collected through a questionnaire based on Oxford’s Strategy inventory for language learning (SILL). ...

this paper presents an inventory model for deteriorating items in which shortages are allowed. it is assumed that the production rate is proportional to the demand rate and greater than demand rate. the inventory model is developed by considering four different circumstances. the optimal of the problem is obtained with the help of mathematica 7 software. numerical examples are given to illustra...

This paper reports on how top EFL students foster oral communication strategies (OCSs) throughout their 4-year English program at the university level. It is a cross-sectional study of 40 EFL learners enrolled in the Department of English, Faculty of Education, Taiz University, Yemen. Data were collected through a questionnaire based on Oxford’s Strategy inventory for language learning (SILL). ...

in the fundamental production inventory model, in order to solve the economic production quantity (epq) we always fix both the demand quantity and the production quantity per day. but, in the real situation, both of them probably will have little disturbances every day. therefore, we should fuzzify both of them to solve the economic production quantity (q*) per cycle. using α-cut for defuzzific...

We study inventory control for rental operations in a closed-loop supply chain. In such a system (e.g., Netflix), customers create online queues in a service provider’s website to indicate the items that they would like to rent. Leveraging this advance demand information, we propose effective forecast models and formulate a multi-item inventory control problem. We prove that the (L,U) policy is...