| In this paper, we address the problem of network survivability by presenting a uniied approach where the wide-area circuit-switched teletraac network and the underlying transmission facility network are considered simultaneously. We assume the backbone circuit-switched teletraac network to be nonhierarchical with dynamic call routing capabilities. The transmission facility network is consider...

An 80-year-old female with history of end stage renal disease on hemodialysis and a transcatheter aortic valve replacement (TAVR) eight months prior was transferred to our facility for treatment of acute embolic right lower extremity ischemia. A transesophageal echocardiogram performed to evaluate for the source of emboli demonstrated large mobile vegetation on the aortic valve prosthesis. Bloo...

The global wind power industry involves operations in highly stochastic environments and thus faces challenges in enhancing reliability and reducing maintenance costs. Earlier studies related to wind energy facility reliability and maintenance focused more on qualitative aspects, discussing the unique influencing factors in wind power operations and their effects on the system performance. With...

— We treat a discrete uncapacitated facility location problem where the installation cost per facility is a gênerai nonlinear function of the number of established facilities. Assuming a convexity proper ty, Mirchandani and Jagannathan developed a heur is tic solution procedure for this problem. Hère, we show how to modify their algorithm in order to get and prove exact solutions and, at the sa...

PURPOSE To quantify the rate of surgical failure after anterior shoulder stabilization procedures, as well as to identify demographic and surgical risk factors associated with poor outcomes. METHODS All Army patients undergoing arthroscopic or open Bankart repair for shoulder instability were isolated from the Military Health System Management Analysis and Reporting Tool between 2003 and 2010...

Case 1 presentation: A 57-year-old man suffered a sudden cardiac arrest at home, witnessed by his son, who called 911 and began cardiopulmonary resuscitation immediately. Emergency medical services (EMS) were activated and arrived on the scene within 10 minutes. The patient was found to be in ventricular fibrillation and was defibrillated 5 times by EMS. He was intubated in the field, and an EC...

Introduction The impact of time to treatment on clinical outcome is an established precept in infectious disease but is not established in peritoneal dialysis-related peritonitis (PDRP). Methods In a prospective multicenter study of PDRP, symptom-to-contact time (SC), contact-to-treatment time (CT), defined as the time from health care presentation to initial antibiotic, and symptom-to-treatm...

The management of acute heart failure is shifting toward treatment approaches outside of a traditional hospital setting. Many heart failure providers are now treating patients in less familiar health care settings, such as acute care clinics, emergency departments, and skilled nursing facilities. In this review we describe the current pressures driving change in the delivery of acute heart fail...

in this paper we study finding the $(k,l)$-core problem on a tree which the vertices have positive or negative weights. let $t=(v,e)$ be a tree. the $(k,l)$-core of $t$ is a subtree with at most $k$ leaves and with a diameter of at most $l$ which the sum of the weighted distances from all vertices to this subtree is minimized. we show that, when the sum of the weights of vertices is negative, t...