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region Centric GL Feature Approximation Based Secure routing for Improved QoS in MANET

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Intelligent Automation & Soft Computing 2023年第4期36卷 267-280页

作者： S.Soundararajan r.Prabha M.Baskar T.J.Nagalakshmi Velammal Institute of Technology Tamilnadu601204India Sri Sairam Institute of Technology Tamilnadu600044India SrM Institute of Science and Technology ChengapattuTamilnadu603203India Saveetha School of Engineering Tamilnadu600124India

Secure routing in Mobile Adhoc Network(Manet)is the key issue now a day in providing secure access to different network *** mobile devices are used in accessing different services,performing secure routing becomes a challenging *** this,different approaches exist whichﬁnd the trusted route based on their previous transmission details and behavior of different ***,the methods focused on trust measurement based on tiny information obtained from local nodes or with global information which are ***-ever,the adversary nodes are more capable and participate in each transmission not just to steal the data also to generate numerous threats in degrading QoS(Quality of Service)parameters like throughput,packet delivery ratio,and latency of the *** encourages us in designing efﬁcient routing scheme to max-imize QoS *** solve this issue,a two stage trust veriﬁcation scheme and secure routing algorithm named GL-Trust(Global-Local-Trust)is *** method involves in route discovery as like popular AODV(Adaptive On-demand Distance Vector)which upgr.des the protocol to collect other information like transmission supported,successful transmissions,energy,mobility,the num-ber of neighbors,and the number of alternate route to the same destination and so ***,the method would perform global trust approximation to measure the value of global trust and perform local trust approximation to measure local *** both the measures,the method would select a optimal route to perform *** protocol is designed to perform localized route selection when there is a link failure which supports the achievement of higher QoS *** incorporating different features in measuring trust value towards secure routing,the proposed GL-Trust scheme improves the performance of secure routing as well as other QoS factors.

关键词： MANET secure routing two stage trust GL-trust quality of service

A novel MC DS-CDMA system scheme with high spectral efficiency

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The Journal of China Universities of Posts and Telecommunications 2006年第3期13卷 11-15页

作者： MIAO de-shan LI Dao-ben School of Information Engineering Beijing University of Posts and Telecommunications Beijing 100876 China

This article presents a novel multicarrier direct sequence code-division multiple-access （MC DS-CDMA） scheme based on the loosely synchronous （LS） codes, which can achieve very high spectral efficiency. Instead of the single subcarrier modulation in a conventional MC DS-CDMA scheme, this novel scheme introduces the nonorthogonal subcarrier-group modulation, whose interferences caused by the non-orthogonal spacing in a subcarrier group can be reduced by a multicode detector. A detailed analysis for this system architecture and also a multiple-input-multiple output （MIMO） MC DS-CDMA solution to satisfy the requirement of beyond 3G mobile communication system are proposed. Simulated results demonstrate that this scheme can obtain excellent bit error rate （ber） performance, as well as achieve more than twice the spectral efficiency as that of conventional MC DS-CDMA systems.

关键词： MC DS-CDMA LS Code subcarrier-group

The Performance Analysis of Traffic Channel Coding in Digital Trunking System

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Journal of Systems Engineering and Electronics 2001年第2期12卷 30-35页

作者： Tan Xuezhi, Su Min & Zhang Naitong Communication research Center of Harbin Institute of Technology, 150001, P r China Communication research Center of Harbin Institute of Technology 150001 P.R. China

The encoding and decoding processes of traffic channel in digital trunking system are studied. On the basis of computer simulation, the ber (bit error ratio) with different rCPC decoding step is analyzed. As a result, the optimal rCPC decoding step is provided, which gives essential theoretical evidences for the implementation of digital trunking system.

关键词： Bit error rate Communication channels (information theory) Quadrature phase shift keying Signal encoding Telecommunication traffic

Extrapolating plot-scale CO_(2) and ozone enrichment experimental results to novel conditions and scales using mechanistic modeling

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Ecological Processes 2018年第1期7卷 348-367页

作者： Eric J.Gustafson Mark E.Kubiske Brian r.Miranda Yasutomo Hoshika Elena Paoletti Institute for Applied Ecosystem Studies Northern Research StationUSDA Forest Service5985 Highway KRhinelanderWIUSA Institute of Sustainable Plant Protection National Council of ResearchVia Madonna del Piano 1050019 Sesto FiorentinoItaly

Introduction:The Aspen-FACE experiment was an 11-year study of the effect of elevated CO_(2) and ozone(alone and in combination)on the growth of model aspen communities(pure aspen,aspen-birch,and aspen-maple)in the field in northern Wisconsin,*** remains about how these short-term plotlevel responses might play out over broader temporal and spatial scales where climate change,competition,succession,and disturbances interact with tree-level *** this study,we used a new physiologybased approach(PnET-Succession v3.1)within the forest landscape model LANDIS-II to extrapolate the FACE results to broader temporal scales(and ultimately to landscape scale)by mechanistically accounting for the globally changing drivers of temperature,precipitation,CO_(2),and *** added novel algorithms to the model to mechanistically simulate the effects of ozone on photosynthesis through ozone-induced impairment of stomatal control(i.e.,stomatal sluggishness)and damage of photosynthetic capacity at the chloroplast ***:We calibrated the model to empirical observations of competitive interactions on the elevated CO_(2) and O_(3) plots of the Aspen-FACE experiment and successfully validated it on the combined factor *** used the validated model to extend the Aspen-FACE experiment for 80 *** only aspen clones competed,we found that clone 271 always dominated,although the ozone-tolerant clone was co-dominant when ozone was *** all treatments,when aspen clone 216 and birch competed,birch was always dominant or co-dominant,and when clone 216 and maple competed,clone 216 was dominant,although maple was able to grow steadily because of its shade *** also predicted long-term competitive outcomes for novel assemblages of taxa under each treatment and discovered that future composition and dominant taxa depend on treatment,and that short-term trends do not always persist in the long ***:We identified the strengths and weakne

关键词： Scaling Global change Elevated CO_(2) Ozone pollution Aspen-FACE Forest composition Carbon dynamics Forest landscape modeling LANDIS-II PnET-succession

A review on Surface?Functionalized Cellulosic Nanostructures as Biocompatible Antibacterial Materials

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Nano-Micro Letters 2020年第6期12卷 90-112页

作者： Mandana Tavakolian Seid Mahdi Jafari Theo GMvan de Ven department of Chemical Engineering McGill UniversityMontrealQC H3A 0C5Canada Pulp and Paper research Center McGill UniversityMontrealQC H3A 0C7Canada Quebec Centre for Advanced Materials(QCAM/CQMF) MontrealCanada department of Food Materials and Process design Engineering Gorgan University of Agricultural Science and Natural ResourcesGorganIran department of Chemistry McGill UniversityMontrealQC H3A 0B8Canada

As the most abundant biopolymer on the earth,cellulose has recently gained significant attention in the development of antibacterial ***,renewability,strong mechanical properties,tunable aspect ratio,and low density offer tremendous possibilities for the use of cellulose in various *** to the high number of reactive groups(i.e.,hydroxyl groups)on the cellulose surface,it can be readily functionalized with various functional groups,such as aldehydes,carboxylic acids,and amines,leading to diverse *** addition,the ease of surface modification of cellulose expands the range of compounds which can be grafted onto its structure,such as proteins,polymers,metal nanoparticles,and *** are many studies in which cellulose nano-/microfibrils and nanocrystals are used as a support for antibacterial ***,little is known about the relationship between cellulose chemical surface modification and its antibacterial activity or *** this study,we have summarized various techniques for surface modifications of cellulose nanostructures and its derivatives along with their antibacterial and biocompatibility behavior to develop non-leaching and durable antibacterial *** the high effectiveness of surface-modified cellulosic antibacterial materials,more studies on their mechanism of action,the relationship between their properties and their effectivity,and more in vivo studies are required.

关键词： Cellulose Nanocellulose Surface modification Antibacterial activity Biocompatibility

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蒸汽发电厂中的冶金学发展

金属学报 1979年第1期15卷 135-154页

作者： r.I.Jaffee

1978年11月13日美国冶金科学家访华团***博士在北京做了“蒸汽发电厂中的冶金学发展”的学术报告,受到热烈欢迎。报告分三部分:(1)蒸汽发电厂的发展趋势及相关的冶金学问题;(2)用于低压透平末级叶片的钛合金;(3)透平转子和发电机的大锻... 详细信息

1978年11月13日美国冶金科学家访华团***博士在北京做了“蒸汽发电厂中的冶金学发展”的学术报告,受到热烈欢迎。报告分三部分:(1)蒸汽发电厂的发展趋势及相关的冶金学问题;(2)用于低压透平末级叶片的钛合金;(3)透平转子和发电机的大锻件。本刊编辑部征得***博士同意,发表报告记录稿,供国内广大读者阅读参考.这份报告记录稿,整理以后未经本人审阅。我们希望:这份报告发表在本刊上,将有助于加强中美两国冶金科学家之间的学术交流。

关键词：转子锻件蒸汽发电厂冶金学材料科学电渣重熔技术大钢锭透平涡轮钦合金流态床叶片钢负偏析末级叶片

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写给爷爷的信

祝你幸福 2018年第3期 72-74页

作者：安小ber

在许多孩子的记忆里，老一辈是模糊的，但是家族的血脉是孩子传承的。给孩子讲讲爷爷奶奶、姥姥姥爷的故事，让孩子给他们写一封信，是传递家族能量的好办法。

关键词：爷爷孩子家族奶奶

Giant hepatic extra-gastrointestinal stromal tumor treated with cytoreductive surgery and adjuvant systemic therapy:A case report and review of literature

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World Journal of Gastrointestinal Surgery 2021年第3期13卷 315-322页

作者： Michel ribeiro Fernandes Caroline Lorenzoni Almeida Ghezzi Tomaz J M Grezzana-Filho Flávia Heinz Feier Ian Leipnitz Aljamir Duarte Chedid Carlos Thadeu Schmidt Cerski Marcio Fernandes Chedid Cléber rositoPinto Kruel department of Gastrointestinal Surgery and Transplantation Hospital de Clínicas de Porto AlegrePorto Alegre 90035-007RSBrazil Division of radiology Hospital de Clínicas de Porto AlegrePorto Alegre 90035-903RSBrazil department of Pathology Hospital de Clínicas de Porto AlegrePorto Alegre 90035-007RSBrazil

BACKGrOUND Primary extra-gastrointestinal stromal tumors(E-GIST)of the liver are *** clinical presentation may range from asymptomatic to bleeding or manifestations of mass *** surgery followed by adjuvant therapy with imatinib is the standard of ***,under specific circumstances,a cytoreductive approach may represent a therapeutic *** describe herein the case of an 84-year-old woman who presented with a tender,protruding epigastric *** computed tomography scan revealed a large,heterogeneous mass located across segments III,IV,V,and VIII of the *** initial approach was transarterial embolization of the tumor,which elicited no appreciable *** the large size and central location of the tumor and the advanced age of the patient,non-anatomic complete resection was *** to substantial intraoperative bleeding and hemodynamic instability,only a near-complete resection could be *** and immunohistochemical staining confirmed the diagnosis of primary E-GIST of the *** the risk/benefit ratio for therapeutic options,debulking surgery may represent a strategy to control pain and prolong *** SUMMArY Here,we present a case report of a patient diagnosed with E-GIST primary of the liver,which was indicated a cytoreductive surgery and adjuvant therapy with *** E-GIST primary of the liver is a rare conditional,the treatment is with systemic therapy and total resection ***,a cytoreductive surgery will be necessary when a complete resection is no possible.

关键词： Extra-gastrointestinal stromal tumor Primary gastrointestinal stromal tumor of the liver Cytoreductive surgery debulking surgery Case report

通过腹腔镜检出妇科恶性肿瘤患者的主动脉旁脉管病变

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世界核心医学期刊文摘（妇产科学分册） 2005年第6期1卷 42-43页

作者： Klemm P. Frber r. Khler C. Schneider A. 王雅楠 department of Gynecology Friedrich Schiller University Bachstrasse 18 07740 Jena Germany

Paraaortic infrarenal lymphadenectomy is indicated in patients with gynecologic tumors of high metastasising potential and can be done successfully by laparoscopic approach. Vascular anomalies in this region are incidental findings during these approaches and may increase the surgical complication rate. In this study, we have documented the frequency and pattern of the vascular anomalies in paraaortic region intraoperatively and on cadavers in an attempt to increase surgical safety. A total of 86 consecutive patients underwent laparoscopic infrarenal paraaortic lymphadenectomy by a standardised technique between 1st of January 2002 and 1st of March 2004. Of the 86, 52 were primary cervical, 5 recurrent cervical, 14 endometrial, 14 early ovarian and 1 vulvar tumor with positive groin and pelvic lymph nodes. In the same time, anatomical dissections of the paraaortic region on 18 cadavers were performed at the Institute of Anatomy. Arterial or venous abnormalities were identified in 30.2% (26/86) of patients by laparoscopy. The most frequent anomalies were related to atypical renal arteries (pole arteries- 9 patients) and an abnormal course of lumbar veins directly draining in the left renal vein (15 patients). In one of the patients, the complete left renal vein went retroaortic to the inferior vena cava. In cadaveric dissections, vascular anomalies were noted in 44.4% (8/18) which included variations in renal and lumbar vessels and ovarian vessels. Duplicated inferior vena cava was the least common anomaly and was detected in only one case. During laparoscopic paraaortic inframesenteric and infrarenal lymphadenectomy, care must be taken because of possible abnormalities in arterially and venous system to avoid massive hemorrhage, transfusion and conversion to laparotomy.

关键词：腹腔镜检妇科恶性肿瘤脉管宫颈肿瘤淋巴结切除卵巢肿瘤妇科肿瘤患者子宫内膜动静脉血管淋巴结阳性