S teel industries play a key role in the national economy and welfare of the society in many steel manufacturer countries. It is found that manufacturing and consuming of steel products would be a key indicator to measure and evaluate economic and industrial performance of a country. Nowadays, countries with the large natural oil and gas resources (e.g. Iran) attempt to select an alt...

Location privacy is a major concern in pervasive networks where static device identifiers enable malicious eavesdroppers to continuously track users and their movements. In order to prevent such identifier-based tracking, devices could coordinate regular identifier change operations in special areas called mix-zones. Although mix-zones provide spatio-temporal de-correlation between old and new ...

This issue of Health Care Financing Review is devoted entirely to the accuracy of hospital case-mix measurement systems for reimbursing hospitals. We have brought together eight articles by active workers in this field, representing the most promising efforts to improve case-mix measurement. Although severity of illness is an organizing theme for these articles, their scope is much broader. The...

We propose a hybrid procedure based on Bounded Dynamic Programming assisted by linear programming to solve the Mixed-Model Sequencing Problem with Workload Minimization, with serial workstations, free interruption of the operations and with production mix restrictions. We performed a computational experiment with 7 instances from a case study related to the Nissan Powertrain plant located in Ba...

s teel industries play a key role in the national economy and welfare of the society in many steel manufacturer countries. it is found that manufacturing and consuming of steel products would be a key indicator to measure and evaluate economic and industrial performance of a country. nowadays, countries with the large natural oil and gas resources (e.g. iran) attempt to select an alternative ec...

We study pursuit and evasion differential game problems described by infinite number of firstorder differential equations with function coefficients in Hilbert space l2. Problems involving integral, geometric, and mix constraints to the control functions of the players are considered. In each case, we give sufficient conditions for completion of pursuit and for which evasion is possible. Conseq...

INTRODUCTION External validation studies are essential to study the generalizability of prediction models. Recently a permutation test, focusing on discrimination as quantified by the c-statistic, was proposed to judge whether a prediction model is transportable to a new setting. We aimed to evaluate this test and compare it to previously proposed procedures to judge any changes in c-statistic ...

BACKGROUND AND OBJECTIVES Arteriovenous fistulas (AVFs) remain the preferred vascular access for hemodialysis patients. Dialysis facilities that fail to meet Centers for Medicare & Medicaid Services goals cite patient case-mix as a reason for low AVF prevalence. This study aimed to determine the magnitude of the variability in AVF usage across dialysis facilities and the extent to which patient...