there have been many productive methods developed so far for optimization of multiple response surface (mrs) problems. this paper tends to review the most seminal approaches in mrs and discuss the strength and weakness of each of the approaches through existing aspects in mrs. a numerical example is included to compare results by different methods. finally some of the prominent areas for future...

background: tissue injuries may provoke neuro-hormonal response which in turn may lead to release of inflammatory cytokines. we hypothesize that block of afferent sensory pathways by infiltration of 0.5% bupivacaine in the scalp may decrease neuro-hormonal response in the neurosurgical patient. methods: after obtaining informed consent, forty asa physical statuses i, ii, or iii patients between...

background: drug resistance is widely believed to be an increasingly serious threat to global public health. we have previously reported that short term exposure of microorganisms to diagnostic ultrasound waves could significantly alter their sensitivity to antibiotics. in our previous studies, klebsiella pneumoniae showed major differences in the sensitivity to antibiotics in exposed and non-e...

background : we aimed to compare hemodynamic and endocrine alterations caused by stress response due to proseal laryngeal mask airway and endotracheal tube usage in laparoscopic cholecystectomy. methods : sixty-three asa i-ii patients scheduled for elective laparoscopic cholecystectomy were included in the study. patients were randomly allocated into two groups of endotracheal tube and proseal ...

this paper proposes an optimal power flow (opf) algorithm by direct load control (dlc) programs to optimize the operational cost of smart grids considering various scenarios based on different constraints. the cost function includes active power production cost of available power sources and a novel flexible load curtailment cost associated with dlc programs. the load curtailment cost is based ...

health care management in disasters is one of the main parts of disaster management. health in disasters is affected by performance of various sectors, and has an interactive impact on various aspects of disaster management. the aim of this study was to identify the most important themes affecting the healthcare management in disaster.in this qualitative study with a content analysis approach, ...