Apart from important but particular cases, such as state-dependent exponential distributions, for example, [1, 4] or an arbitrary repair time distribution [12], the reliability analysis of multiple cold standby systems is far from complete. We present a general reliability analysis of a basic multiple cold standby system attended by a single repairman, henceforth called a K-system. The K-system...

OBJECTIVE The extraperitoneal laparoscopic approach (EXTRA) has been shown to be an effective and safe repair for primary (PIH), recurrent (RIH) and bilateral hernia (BIH). There is very little data examining the merits of laparoscopic repair for hernias under local anesthesia. In this' paper, we compare EXTRA performed under both general and local anesthesia. METHODS This nonrandomized prosp...

conclusions the treatment of symptomatic ecu instability is still controversial, especially for acute dislocations. depending on the type of injury many surgical techniques have been proposed. combination of direct repair of the tendon’s subsheath and reinforcement with an extensor retinaculum graft is a reliable option. introduction dislocation/subluxation of the extensor carpi ulnaris (ecu) t...

Background: Anterior cruciate ligament (ACL) reconstruction using tendon or ligament autograft is the current goldstandard surgical technique for acute ACL ruptures. However, ACL repair surgical procedures are reappearing as anoptimistic treatment alternative for acute proximal ruptures. The purpose of this annotation is to review the current roleof primary repair of the ACL.<...

Many methods on modeling failure processes of repairable systems have been developed. Based on different assumptions on the repairs, the models can be classified into three categories: models for minimal repair, models for general repair and models for perfect repair. In this paper, we will discuss a log linear model based on the general repair assumption. This model is integrated with the Kiji...

OBJECTIVE To determine whether training on shoulder and elbow surgery influences the orthopedist surgeons' preferred technique to address acute acromioclavicular joint dislocation (ACD). METHODS A survey was conducted with shoulder and elbow specialists and general orthopedists on their preferred technique to address acute ACD. RESULTS Thirty specialists and forty-five general orthopedists ...

Many authors have analyzed queueing systems with server breakdowns. Kendall (1953) studied stochastic processes occurring in the theory of queues and their analysis by the method of imbedded Markov chains. Buzacott and Hanifin (1978) classified the machine failures as operation dependent failures and time dependent failures. Shanthikumar (1982) analyzed a M/G/1 queueing system with time and ope...

K e y w o r d s M a i n t e n a n c e , Repair-time limit, Imperfect repair, Earning rate, Lorenz statistics, Nonparametric. This research was partially supported by the Ministry Education, Culture, Sports, Science and Technology, Grantin-Aid for Exploratory Research; Grant No. 15651076 (2003-2005), Scientific Research (B); Grant No~ 16310116 (2004-2006), Scientific Research (C); Grant No. 1651...

Abstract Background Congenital primary inguinal hernia is a common condition among children. Although much literature regarding available, large scale analysis are few, and rarely do they expand on gender difference or incarcerated hernias. Methods Patients with unilateral bilateral who were admitted to our hospital received open repair (OIHR) laparoscopic (LIHR) under general anesthesia includ...

The main object of this paper is to develop a reliability model of a single-unit system operating under two weather conditionsnormal and abnormal. There is a single server who visits the system immediately whenever needed and plays the dual role of inspection and repair. The unit does not work as new after repair at complete failure and so called the degraded unit. The unit is inspected at its ...