This paper studies the nonlinear optimization problems subject to bipolar max-min fuzzy relation equation constraints. The feasible solution set of the problems is non-convex, in a general case. Therefore, conventional nonlinear optimization methods cannot be ideal for resolution of such problems. Hence, a Genetic Algorithm (GA) is proposed to find their optimal solution. This algorithm uses th...

BACKGROUND The benefits of daily haemodialysis (DHD) compared to conventional three times per week haemodialysis (CHD) have been described in a number of observational studies. Most of these previous studies however have not been performed with rigorous controls. METHODS We performed a crossover study following an A-B-A design: phase A was 4 weeks of thrice weekly dialysis, 3-4 h per treatmen...

Genetic Vehicle Representation (GVR) is a two level representational scheme, designed to deal in an effective way with all the information needed by candidate solutions, for the Vehicle Routing Problem (VRP). In this paper, we present an analysis on the influence of two crossover operators in the algorithm performance. A first study on diversity is also presented, regarding the issues of divers...

PURPOSE Significant vasovagal reaction is one of the untoward events in the course of simple extractions. The present study then aimed to record the patients' heart rate during the extraction procedure. MATERIALS AND METHODS Informed consents were obtained in advance. Patients were placed in the dental chair and their heart rate was measured before /and prior to the anesthetic injection, duri...

Purpose: A theory states that strong core stability allows athletes to fully transfer forces from the upper extremities to lower extremities, and finally to the ground. On the contrary, weak core stability causes alterations in transferring forces, reduces sport performance, and increases risk for injury, especially in the lower extremities. Therefore, the current study investigated the relatio...