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改良Millikan网塞法和Shouldice术式治疗Ⅱ型腹股沟疝的疗效对比 被引量:1
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作者 李健 《中国现代医学杂志》 CAS CSCD 北大核心 2009年第20期3148-3150,3154,共4页
目的对比改良Millikan网塞法和Shouldice术式治疗II型腹股沟疝的临床效果,探讨最佳的疝修补术式。方法84例Ⅱ型腹股沟疝病例随机分为改良Millikan补片(A)组(n=42)和Shouldice术式(B)组(n=42),对比观察住院期间及术后12个月各相关指标的... 目的对比改良Millikan网塞法和Shouldice术式治疗II型腹股沟疝的临床效果,探讨最佳的疝修补术式。方法84例Ⅱ型腹股沟疝病例随机分为改良Millikan补片(A)组(n=42)和Shouldice术式(B)组(n=42),对比观察住院期间及术后12个月各相关指标的差异。结果住院并发症如疼痛持续时间大于5d,感染、阴囊血肿、阴囊水肿和发热的发生率两组无差异(P>0.05);两组间切口长度、术中出血量、手术时间、平均下床活动及住院时间、疝复发率、恢复正常步速时间和提重物时间均无差异(P>0.05);A组平均住院费用明显高于B组(P=0.000)。结论治疗Ⅱ型腹股沟疝时,Shouldice术式和改良Millikan网塞修补法的疗效无明显差异,应该作为治疗该类疝的首选术式。 展开更多
关键词 Ⅱ型腹股沟疝 millikan网塞法 SHOULDICE术
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Shouldice术式和改良Millikan网塞法治疗Ⅱ型腹股沟疝的前瞻性研究
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作者 赖济环 蔡棣甜 +1 位作者 余嘉莹 曾志勇 《岭南现代临床外科》 2008年第6期454-456,465,共4页
目的对比研究Shouldice术式和改良Millikan网塞法治疗Ⅱ型腹股沟疝的临床效果,探讨Ⅱ型疝修补的最佳术式。方法103例Ⅱ型腹股沟疝病例分为Shouldice术式(A,n=57)组和改良Millikan补片(B,n=46)组。对比观察住院期间及术后12个月随访期各... 目的对比研究Shouldice术式和改良Millikan网塞法治疗Ⅱ型腹股沟疝的临床效果,探讨Ⅱ型疝修补的最佳术式。方法103例Ⅱ型腹股沟疝病例分为Shouldice术式(A,n=57)组和改良Millikan补片(B,n=46)组。对比观察住院期间及术后12个月随访期各相关指标。结果A和B组随访率分别为93%和96.7%。术后疼痛持续时间、伤口感染、阴囊血肿、阴囊水肿和发热的发生率两组无差异(P>0.05);两组间切口长度、出血量、手术时间、平均下床活动及住院时间影响术后康复的因素,以及两组间疝复发率、恢复正常步速时间和提重物时间均无差异(P>0.05);但是A组平均住院费用明显低于B组(P=0.000)。结论Shouldice术式在治疗Ⅱ型腹股沟疝,不但可以取得与Millikan网塞修补一样的临床效果,而且具有经济上的绝对优势,是治疗腹股沟疝的一项可靠方法。 展开更多
关键词 Shouldice术式 millikan网塞法 Ⅱ型腹股沟疝 前瞻性研究
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“网塞法”在复发性腹股沟疝修补术中的应用
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作者 关山 齐立行 《中国医刊》 CAS 2001年第5期47-48,共2页
关键词 复发性腹股沟疝 修补术 手术方
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Millikan改良网塞疝修复术 被引量:6
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作者 Keith W.Millikan Brice Cummings +1 位作者 Alexander Doolas 王晔鸣 《外科理论与实践》 2005年第6期550-552,共3页
自1890年Bassini发表腹股沟疝修补术以来,在术式方面有过了多改进.过去20年中,网片修补技术因具减张的优点而被广泛接受.20世纪70年代,Lichtenstein和Shore首先创用网塞治疗股疝和复发性疝[1]:Gilbert随之在80年代用之于治疗斜疝[2]:Rut... 自1890年Bassini发表腹股沟疝修补术以来,在术式方面有过了多改进.过去20年中,网片修补技术因具减张的优点而被广泛接受.20世纪70年代,Lichtenstein和Shore首先创用网塞治疗股疝和复发性疝[1]:Gilbert随之在80年代用之于治疗斜疝[2]:Rutkow和Robbins在90年代倡用预制的网塞加补片治疗各种腹股沟疝[3,4]. 展开更多
关键词 腹股沟 疝修补术 millikan
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网塞平片式疝修补术(Millikan术)在腹股沟疝修补术中的应用 被引量:1
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作者 刘军杰 王鹏 吕强 《中国继续医学教育》 2016年第28期79-80,共2页
目的 探讨网塞平片式疝修补术(Millikan术)治疗腹股沟疝的方法及优点。方法 回顾性分析我院普外科2011年9月-2015年12月应用Millikan术治疗腹股沟疝93例的临床资料。结果 平均手术时间(49.1±8.1)分钟;平均住院天数(5.8±... 目的 探讨网塞平片式疝修补术(Millikan术)治疗腹股沟疝的方法及优点。方法 回顾性分析我院普外科2011年9月-2015年12月应用Millikan术治疗腹股沟疝93例的临床资料。结果 平均手术时间(49.1±8.1)分钟;平均住院天数(5.8±0.8)天;术后无慢性疼痛;术后并发症7.5%(7/93);术后无复发。结论 Millikan术治疗腹股沟疝是一种简单易掌握的腹膜前间隙疝修补技术,具有复发率低,手术时间短,术后疼痛轻,并发症少的优点。 展开更多
关键词 腹股沟疝 millikan
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腹腔镜网塞法腹股沟疝修补术术式探讨
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作者 杨雪菲 朱畅 +2 位作者 胡海军 夏利刚 潘凯 《中国内镜杂志》 CSCD 北大核心 2010年第6期619-621,共3页
目的探讨一种新术式——腹腔镜下网塞法腹股沟疝修补术的临床应用价值。方法在腹腔镜手术中利用"玫瑰花"补片网塞经腹腔内进行疝修补。将该科同时期施行的9例腹腔镜下网塞法腹股沟疝修补术与10例腹腔镜全腹膜外疝修补术(TEP)... 目的探讨一种新术式——腹腔镜下网塞法腹股沟疝修补术的临床应用价值。方法在腹腔镜手术中利用"玫瑰花"补片网塞经腹腔内进行疝修补。将该科同时期施行的9例腹腔镜下网塞法腹股沟疝修补术与10例腹腔镜全腹膜外疝修补术(TEP)在疗效、复发率、并发症各方面进行比较。结果所有病例均获术后治愈,在最长达19个月的随访时间内无复发。2例TEP术后有并发症发生,所有新术式患者无并发症发生。结论腹腔镜下网塞法腹股沟疝修补术治疗腹股沟疝疗效确切,近期未观察到复发,尚未发现并发症,可进一步增加病例数并观察远期疗效,评估手术适应证。该术式有望成为一种新的腹腔镜腹股沟疝修补术式。 展开更多
关键词 TEP 腹腔镜腹股沟疝修补术 复发率 并发症
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聚丙烯网塞及补片修补腹股沟疝后短期超声表现(附97例报告) 被引量:1
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作者 王福建 徐芳 《中华医学超声杂志(电子版)》 2010年第12期18-18,共1页
自2007年8月至2009年4月在我院用充填式无张力疝环修补法治疗了97例腹股沟疝患者,现将其修补术后短期超声表现报道如下。 一、资料与方法97例腹股疝患者中男性85例,女性12例,年龄34~76岁,平均(64.0±2.4)岁。其中单侧斜疝63例,... 自2007年8月至2009年4月在我院用充填式无张力疝环修补法治疗了97例腹股沟疝患者,现将其修补术后短期超声表现报道如下。 一、资料与方法97例腹股疝患者中男性85例,女性12例,年龄34~76岁,平均(64.0±2.4)岁。其中单侧斜疝63例,单侧直疝31例,双侧单一性质疝8例,混合性疝3例(既有直疝又有斜疝)。 展开更多
关键词 腹股沟疝 超声表现 聚丙烯 补片修补 充填式无张力 2009年 治疗 修补术后
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New Algorithm for Real-Time CAC Decisions
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作者 张鹰 陶然 +1 位作者 周思永 王越 《Journal of Beijing Institute of Technology》 EI CAS 1998年第4期366-372,共7页
Aim To Put forward an improve algorithm for real-time connection admission control (CAC) decision. Methods converted equations of Cell loss ratio (CLR) upper bound were derived based on typical approaches to reduce co... Aim To Put forward an improve algorithm for real-time connection admission control (CAC) decision. Methods converted equations of Cell loss ratio (CLR) upper bound were derived based on typical approaches to reduce computing load. Moreover, the effects of usage parameter control (UPC) policing and bandwidth allocation functions were combined to deduce improver equations. computing load and admission region of the new algorithm were analyzed, while numerical examples and comparisons with classical non-parametic method were also included. Results Computing burden was reduced. More accurate estimation of CLR was obtained. The admission region of new algorithm was larger than typical non-parametric approach and was variable according to the burst length.Conclusion The calculation burden of new algorithm for CLR estimation is lighter than classical non-parametric approach. In addition to that, just as many information as what we can get in connection setup process are used for CAC decision. So it is not only a practicable but also an effective method that can be used in real-time processing. 展开更多
关键词 ATM networks CAC algorithm congestion and block control cell loss ratio
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ON THE TESTING FOR ALPHA-STABLE DISTRIBUTIONS OF ETHERNET NETWORK TRAFFIC 被引量:3
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作者 Ge Xiaohu Zhu Guanxi Zhu Yaoting (Electron. & Info. Eng. Dept., Huazhong Univ. of Sci. & Tech., Wuhan 430074) 《Journal of Electronics(China)》 2003年第4期309-312,共4页
The modeling of network traffic is important for the design and application of networks, but little is known as to the characteristics of distribution of packets in network traffic. In this letter the distribution of ... The modeling of network traffic is important for the design and application of networks, but little is known as to the characteristics of distribution of packets in network traffic. In this letter the distribution of packets in network traffic is explored. 展开更多
关键词 Alpha-stable distributions SELF-SIMILAR Maximum likelihood method Network traffic
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PTCP Incast in Data Center Networks 被引量:6
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作者 LI Ming Andrey Lukyanenko +1 位作者 Sasu Tarkoma Antti Yla-Jaaiski 《China Communications》 SCIE CSCD 2014年第4期25-37,共13页
In recent years,dual-homed topologies have appeared in data centers in order to offer higher aggregate bandwidth by using multiple paths simultaneously.Multipath TCP(MPTCP) has been proposed as a replacement for TCP i... In recent years,dual-homed topologies have appeared in data centers in order to offer higher aggregate bandwidth by using multiple paths simultaneously.Multipath TCP(MPTCP) has been proposed as a replacement for TCP in those topologies as it can efficiently offer improved throughput and better fairness.However,we have found that MPTCP has a problem in terms of incast collapse where the receiver suffers a drastic goodput drop when it simultaneously requests data over multiple servers.In this paper,we investigate why the goodput collapses even if MPTCP is able to actively relieve hot spots.In order to address the problem,we propose an equally-weighted congestion control algorithm for MPTCP,namely EW-MPTCP,without need for centralized control,additional infrastructure and a hardware upgrade.In our scheme,in addition to the coupled congestion control performed on each subflow of an MPTCP connection,we allow each subflow to perform an additional congestion control operation by weighting the congestion window in reverse proportion to the number of servers.The goal is to mitigate incast collapse by allowing multiple MPTCP subflows to compete fairly with a single-TCP flow at the shared bottleneck.The simulation results show that our solution mitigates the incast problem and noticeably improves goodput in data centers. 展开更多
关键词 TCP MPTCP incast collapse congestion control data centers
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Research on fault diagnosis method of piston rod based on harmonic wavelet and manifold learning 被引量:3
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作者 江志农 Zhu Lina +1 位作者 Zhang Jinjie Zhou Chao 《High Technology Letters》 EI CAS 2018年第3期232-240,共9页
As the core part of reciprocating compressor,piston rod is easy to cause a serious accident when abrasion and breakage fault occur to it. Therefore,it is very important to monitor its running state. At present,a small... As the core part of reciprocating compressor,piston rod is easy to cause a serious accident when abrasion and breakage fault occur to it. Therefore,it is very important to monitor its running state. At present,a small number of reciprocating compressors have been installed on-line monitoring and diagnosis system,most of which can only monitor a single vertical subsidence of piston rod and it can't fully represent the running state of piston rod. Therefore,a method of monitoring the vertical and horizontal displacement of piston rod axis orbit is simultaneously used. In view of the characteristics that the piston rod axis orbit is disordered and difficult to extract features,purification of the axis orbit is carried out based on harmonic wavelet and then features are extracted such as vibration energy,natural frequency and the axis orbit envelope area. After that,a nonlinear local tangent space manifold learning algorithm is used to reduce the dimension of the features and obtain sensitive features. By analyzing the practical cases,the effectiveness of the method for fault monitoring and diagnosis of reciprocating compressor piston rod assembly has been verified. Finally,as BP neural network has the characteristics of solving complex nonlinear problems,the validity of the fault diagnosis method of reciprocating compressor piston rod based on harmonic wavelet and manifold learning is proved by actual case data analysis based on BP neural network. 展开更多
关键词 piston rod reciprocating compressor axis orbit harmonic wavelet manifold learning
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Congestion aware routing algorithm for delay-disruption tolerance networks 被引量:4
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作者 陶勇 龚正虎 +1 位作者 林亚平 周四望 《Journal of Central South University》 SCIE EI CAS 2011年第1期133-139,共7页
There were many contradictory evaluation criteria to select next-hop in the delay-disruption tolerance networks(DTN).To solve this problem,an attribute hierarchical model was proposed,in which the predefined criteria ... There were many contradictory evaluation criteria to select next-hop in the delay-disruption tolerance networks(DTN).To solve this problem,an attribute hierarchical model was proposed,in which the predefined criteria were summarized as static identity attributes,forwarding desire attributes and delivery capability attributes(IDC).Based on this model,a novel multi-attributes congestion aware routing(MACAR) scheme with uncertain information for next-hop selection was presented,by adopting an decision theory to aggregate attributes with belief structure and computing partial ordering relations.The simulation results show that MACAR presents higher successful delivery rate,lower average delay and effectively alleviate congestion. 展开更多
关键词 delay-disruption tolerant network congestion control routing algorithm custody transfer
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A QoS-aware vertical handoff algorithm based on predictive network information 被引量:3
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作者 郭云松 谭冠政 +1 位作者 A.S.M.LIBDA 马丽强 《Journal of Central South University》 SCIE EI CAS 2012年第8期2187-2193,共7页
In converged heterogeneous wireless networks, vertical handoff is an important issue in radio resource management and occurs when an end user switches from one network to another (e.g., from wireless local area netwo... In converged heterogeneous wireless networks, vertical handoff is an important issue in radio resource management and occurs when an end user switches from one network to another (e.g., from wireless local area network to wideband code division multiple access). Efficient vertical handoff should allocate network resources efficiently and maintain good quality of service (QoS) for the end users. The objective of this work is to determine conditions under which vertical handoff can be performed. The channel usage situation of each access network is formulated as a birth-death process with the objective of predicting the avaliable bandwidth and the blocking probability. A reward function is used to capture the network bandwidth and the blocking probability is expressed as a cost function. An end user will access the certain network which maximizes the total function defined as the combination of the reward fimction and the cost function. Simulation results show that the proposed algorithm can significantly improve the network performance, including higher bandwidth for end users and lower new call blocking and handoff call blocking probability for networks. 展开更多
关键词 heterogeneous wireless network vertical handoff quality of service (QoS) birth-death process
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A dynamic programming algorithm for network selection in 3G/WLAN 被引量:1
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作者 陈佳美 Xu Yubin +1 位作者 Ma Lin Deng Zhian 《High Technology Letters》 EI CAS 2013年第4期364-370,共7页
An essential characteristic of the 4th Generation(4G) wireless networks is integrating various heterogeneous wireless access networks.This paper considers the network selection for both admission and handoff strategy ... An essential characteristic of the 4th Generation(4G) wireless networks is integrating various heterogeneous wireless access networks.This paper considers the network selection for both admission and handoff strategy problems in heterogeneous network of 3G/WLAN.A novel dynamic programming algorithm is proposed by taking heterogeneous network characteristics,user mobility and different service types into account.The specificity of our approach is that it puts the situations in a new model and makes decisions in stages of different states.Simulation results validate that the proposed scheme can obtain better new call blocking and handoff dropping probability performance than traditional schemes while ensuring quality-of-services(QoS) for both real-time and data connections. 展开更多
关键词 dynamic programming heterogeneous networks network selection HANDOFF admission control
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Survivable Traffic Cognition Algorithm with Joint Failure Probability in Flexible Bandwidth Optical Networks 被引量:1
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作者 张杰 陈伯文 +2 位作者 赵永利 Jason P.Jue 顾畹仪 《China Communications》 SCIE CSCD 2013年第4期38-48,共11页
This paper addresses the problem of survivable traffic assignment with failure probability requirement in flexible bandwidth optical networks. We describe a Survivable Traffic Cognition (STC) algorithm with joint fail... This paper addresses the problem of survivable traffic assignment with failure probability requirement in flexible bandwidth optical networks. We describe a Survivable Traffic Cognition (STC) algorithm with joint failure probability. Survivable Traffic Assignment (STA) algorithm and Conventional Traffic Assignment (CTA) algorithm are added to illustrate the effectiveness of our proposed STC. We investigate the effect of joint failure probability on blocking probability, spectral utilization ratio, average joint failure probability, and the average hops. Simulation results show that our proposed STC not only achieves better performance in terms of blocking probability and spectral utilization ratio than CTA and STA, but also does not cause higher average joint failure probability or larger average hops compared with STA. As a result, STC makes the best use of spectral resources and does not cause large average joint failure probability. 展开更多
关键词 flexibleworks SURVIVABILITY failure probabilitybandwidth optical net-traffic cognition JOINT
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On Minimizing Delay with Probabilistic Splitting of Traffic Flow in Heterogeneous Wireless Networks 被引量:1
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作者 ZHENG Jie LI Jiandong +2 位作者 LIU Qin SHI Hua YANG Xiaoniu 《China Communications》 SCIE CSCD 2014年第12期62-71,共10页
In the paper,we propose a framework to investigate how to effectively perform traffic flow splitting in heterogeneous wireless networks from a queue point.The average packet delay in heterogeneous wireless networks is... In the paper,we propose a framework to investigate how to effectively perform traffic flow splitting in heterogeneous wireless networks from a queue point.The average packet delay in heterogeneous wireless networks is derived in a probabilistic manner.The basic idea can be understood via treating the integrated heterogeneous wireless networks as different coupled and parallel queuing systems.The integrated network performance can approach that of one queue with maximal the multiplexing gain.For the purpose of illustrating the effectively of our proposed model,the Cellular/WLAN interworking is exploited.To minimize the average delay,a heuristic search algorithm is used to get the optimal probability of splitting traffic flow.Further,a Markov process is applied to evaluate the performance of the proposed scheme and compare with that of selecting the best network to access in terms of packet mean delay and blocking probability.Numerical results illustrate our proposed framework is effective and the flow splitting transmission can obtain more performance gain in heterogeneous wireless networks. 展开更多
关键词 traffic flow splitting heterogeneous wireless networks multi-radio access packet delay
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网塞充填式无张力疝修补术治疗复发疝24例体会
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作者 范友金 宋岗 田洪森 《中华疝和腹壁外科杂志(电子版)》 2010年第4期55-55,共1页
关键词 充填式无张力疝修补术 复发疝 SHOULDICE BASSINI HALSTED 治疗 二次手术
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