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关键词： Staple line leak reinforcement   Bariatric surgery   Y GASTRIC BYPASS   SLEEVE GASTRECTOMY   MORBID-OBESITY   LEAKS   GASTROJEJUNOSTOMY   EXPERIENCE  

摘要： Staple line leaks represent a major concern in all laparoscopic operations but are particularly important in bariatric surgery, where leak complications carry significant morbidity and mortality. Therefore, several means of staple line reinforcement have been described, but none is totally accepted. In this study, we attempt to illuminate any clear benefit of staple line reinforcement through a systematic review and meta-analysis of reported articles. Two major databases (PubMed and Cochrane) were searched and assessed by two reviewers. Inclusion criteria were: detailed description of operative technique, especially concerning staple line reinforcement, and possible existence of proven staple line leak. Selected studies were evaluated by systematic review and meta-analysis according to their eligibility. The study population was finally divided into two groups: reinforcement (of any type) and no reinforcement. In the initial search, 126 studies were obtained. Then, 17 full papers, both randomised controlled trials (RCTs) and non-RCTs, were included in the systematic review. Seven studies, comprising 3,299 patients, were examined for evaluation of population odds of leak (7.69), which was considered clinically significant. Meta-analysis of three studies comprising 1,899 patients revealed no clear benefit of reinforcement group, though with marginal significance. Although several drawbacks exist, this study illustrates two important aspects: that current staplers may not be uniformly reliable, and that staple line reinforcement does not seem to have any clear benefit, at least concerning leak rate.

关键词： GAS compressors   MAINTAINABILITY (Engineering)   OFFSHORE gas industry   SYSTEMS engineering   POISSON processes   RELIABILITY (Engineering)   PROPORTIONAL hazards models  

摘要： A systematic approach with proper statistical analysis techniques for analyzing maintenance data can give insight on how well the performance of the existing system. The objective of this study is to present a methodology for systematically analyzing the maintenance data of offshore gas compressor system to gain insight about the system performance and identify the critical factors influencing the performance. The study approach is based on problem and data-lead rather than technique-driven. The results of trend test propose that the system under studied can be modeled using a simple Homogeneous Poisson process (HPP) process where the failure rate is constant. Analyses of covariates are done using Kaplan Meier and Proportional hazards models. The results indicate that the preventive maintenance (PM) plus engine wash has a significance influence on the system failure distribution. This covariate is found to play a positive role in extending the inter-arrival failure times thus improving the system performance. [ABSTRACT FROM AUTHOR]

关键词： 软件工程   课程总结   学习体会  

摘要： 读完《软件工程》和一些有关资料后，感觉一些东西都曾经接触过，但在实际工作中有些理论要完全遵循可能还有些障碍，软件工程只是提供了理论上的一些结论，但对项目的具体可操作性的规范的制定方面却做的很少，《软件工程》发展了几十年，光是开发模型就达到了10多种，对不同的项目采用合适的开发模式，有些项目在不同的开发阶段可能还要转换开发模式，把它们灵活的应用到实际中还是很困难的。

关键词： 离散数学   教学   总结   实践  

摘要： 《离散数学》是计算机专业的核心基础课程之一,具有抽象性强、理解困难等特点。如何通过教学内容的设计和教学方法的选择提高教学效果成为任课教师无法回避的问题。本文基于对《离散数学》课程特点的认识,在总结自身教学经验的基础上,从教材建设、实验教学、教学渠道创新三个方面提出了相应的建议和对策。

关键词： 多Agent系统   作战行动域   实际组元  

摘要： 建立作战系统多Agent系统(Multi-Agent System,MAS)组织,必须首先建立由作战系统实际组元到Agent的映射。围绕作战系统MAS的建立,在提出由作战系统实际组元到Agent的映射过程与方法的基础上,提出了作战系统领域概念视图、作战行动域及其各层次概念、实际组元逻辑关系分析的基本方法,为实现基于多Agent的作战系统建模与仿真奠定基础。在基于多Agent的信息化战场多传感器仿真演示系统中,证明了该方法的可行性与有效性。

关键词： 课程实验   信息技术   福州市   高中   总结报告   技术学科   有效教学  

摘要： 2006年秋季福州市高中进入新课程实验，到2009年9月已完成了第一轮课改实验。回顾三年来的新课程实验，有经验也存在一些问题和困惑，下面就福州市高中信息技术新课程的三年实施情况进行总结，期望对进一步促进本市高中信息技术有效教学提供一些启示。

关键词： 内科教学   教学法   课程   临床实践   教学过程   教学方法   教学质量   床边教学  

摘要： 内科学是临床各科的基础,同时也是实践性很强的一门学科,教学过程中应结合临床实践实施教学.因此,各种新的教学方法不断出现,也有学者提出'床边教学'的方法以提高教学质量.然而,由于许多中职卫校的教学条件限制,加之日前人们健康意识、法律意识的不断提高,随堂开展临床实践有一定困难.

关键词： 数字测图   项目化教学   教学实践  

摘要： 《数字测图》是高等职业教育3年制工程测量技术专业的一门核心技能课程,在工程测量技术专业的教学体系中占有重要地位,本文总结了项目化教学在该课程中的应用,在教学实践中取得了良好的教学效果。

关键词： Piecewise smooth system   Lyapunov-like function   GP-stability   Totally GP-stability   DISCONTINUOUS SYSTEMS   HOPF-BIFURCATION  

摘要： In this paper, we study the generalized practical stability and the totally generalized practical stability of Filippov-type piecewise smooth systems. We also apply these properties to a brake model of bike to study its practical stability. Some numerical computations are presented to illustrate our theories. (C) 2010 Elsevier Inc. All rights reserved.