This paper proposes two variants of heuristic algorithms to solve the classic permutation flowshop scheduling problem. Both algorithms are simple and very efficient. The first algorithm is a constructive heuristic which builds the optimal schedule of jobs on the basis of a selective-greedy process. To escape the trap of local optimum points, for the second heuristic algorithm a stochastic featu...

BACKGROUND Providing emergency department (ED) wait time information to the public has been suggested as a mechanism to reduce lengthy ED wait times (by enabling patients to select the ED site with shorter wait time), but the effects of such a program have not been evaluated. We evaluated the effects of such a program in a community with two ED sites. METHODS Descriptive statistics for wait t...

objective: this is a parallel, three group, randomized, controlled clinical trial, with outcomes evaluated up to three months after randomization for children and adolescents with chronic nail biting. the current study investigates the efficacy of habit reversal training (hrt) and compares its effect with object manipulation training (omt) considering the limitations of the current literature ....