Cloud computing datacenters provide thousands to millions of virtual machines (VMs) on-demand in highly dynamic environments, requiring quick placement of requested VMs into available physical machines (PMs). Due to the randomness of customer requests, the Virtual Machine Placement (VMP) should be formulated as an online optimization problem. The first part of this work proposes a formulation o...

conclusions most cases of splenectomy in our center caused by trauma, and among the different types of trauma, blunt trauma is the dominant cause. road traffic accidents, in particular motor vehicle accidents, especially motorbike injures, are the most frequent cause of splenectomy. due to the instability of trauma patients, a mortality rate of 8% seems to be reasonable for splenectomy. rnwe re...

introduction: reconstruction of intraoral soft tissue defects is important in restoring function and esthetic. in large defects, there will be demand for regional pedicle flaps or free flaps. hard palate separates nasal and oral cavities. due to the small surface area between flap and remaining palate after surgical resections, optimal blood supply of the flaps for hard palate reconstructions a...

background: cardiovascular disease is an important non-obstetric cause of maternal and fetal /neonatal morbidity and mortality during pregnancy. for a pregnant woman with cardiac disease, the potential inability of the maternal cardiovascular system to contend with normal pregnancy-induced physiologic changes may produce deleterious effects on both mother and fetus. to determine the most freque...

conclusions comparing the serum lactate level before operation and 24 hours after the operation showed that the number of received blood units had a significant effect on serum lactate. we found no significant effect for blood storage duration; however, the number of given blood units was more significant. patients and methods in a cross-sectional study, 228 patients referred to three hospitals...

conclusions for laterally localized and protruded duodenal diverticula, laparoscopic resection is a feasible and safe method. the role of laparoscopy in surgical treatment of complicated diverticula, located in other parts of the duodenum, is unclear because of lack of experience. case presentation in this article, we present a case report of a large duodenal diverticulum, treated with laparosc...

retained surgical gauze is occasionally observed in general practice. herein, we report a case with surgical gauze retained for over 13 years that created a fistula which drained pus into the stomach.

context despite advancements in the science of surgery, minimizing bleeding from parenchymal tissue of the liver continues to be one of the challenges surgeons are facing to protect patients’ lives. however, the number of surgeries needing incisions in the liver tissue, e.g. metastatectomy, is constantly increasing. conclusions the excessive blood loss and the long time needed to control the bl...

introduction: many post-surgical wound infections in hospitals cause morbidity and morality of patients and these are usually transmitted via hands of surgical personnel. the aim of the present study was to detect and antibiogram the bacterial agents following scrubbing of hands of surgical personnel before operation. methods: hands of 134 personnels of operation room were swabbed following scr...