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Flap reconstruction of the abdominal wall

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Plastic and Aesthetic Research 2020年第4期7卷 20-26页

作者： Sneha Patel Alexander F.Mericli sahil k.kapur Margaret S.Roubaud Charles E.Butler Department of Plastic Surgery The University of Texas M.D. Anderson Cancer CenterHoustonTX 77030USA

Large abdominal cutaneous defects may occur in association with complex ventral hernias, trauma, tumor resection, necrotizing infections or septic evisceration. Soft tissue reconstruction of the abdominal wall is performed when there is insufficient adipocutaneous tissue to permit standard, primary closure. A number of reconstructive techniques are available, the choice of which is based on a number of factors, including the size and location of the defect, etiology, and timing of closure. In general, local fasciocutaneous advancement flaps and adjacent tissue rearrangement are the workhorse techniques, followed by regional myocutaneous flaps and free tissue transfers for the most complex and extensive of defects. Herein, we describe our approach to abdominal soft tissue reconstruction, indications, technical nuances, and management of complications.

关键词： Abdominal wall reconstruction surgical flaps pedicled flap free flap bioprosthetic mesh hernia reconstructive surgical procedures

Investigation of rockfall-prone road cut slope near Lengpui Airport,Mizoram,India

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Journal of Rock Mechanics and Geotechnical Engineering 2019年第1期11卷 146-158页

作者： A.k.Verma sahil Sardana Pushpendra Sharma Lal Dinpuia T.N.Singh Department of Mining Engineering Indian Institute of Technology (Banaras Hindu Universiy) Department of Mining Engineering Indian Institute of Technology (Indian School of Mines) Department of Civil Engineering Lassonde School of Engineering York University Department of Ceology Pachhunga University College Department of Earth Sciences Indian Institute of Technology Bombay

Rockfall is one of severe natural hazards that are frequently reported in northeast region of India. It carries rock block falling from the cliff with high velocities and energies which can result in damages to vehicles, disruption to transportation, injuries and fatalities. The massive rockfall event which occurred in April 2017 on the highway NH-44 A, near Lengpui Airport, blocked the traffic for 1 d, and fortunately,no casualties were reported as the event occurred in the night. This is the only highway connecting the Aizawl city to the airport and the region is highly prone to rockfall events. Hence assessment of rockfall along this highway is necessary. In the current study, rockfall hazard assessment has been carried out on three locations by rockfall hazard rating system(RHRS). During pre-failure analysis, the result shows that most hazardous slopes have RHRS score of 639. The slopes were found to be vulnerable and later on the rockfall activity occurred. Three-dimensional(3 D) stability analysis has been carried out using 3 DEC software package to analyze the failure behavior and to decide the rockfall-prone zone(unstable blocks)for slope. The total displacement of 2.24 cm and velocity of 2,25 mm/s of the failed block have been observed in the numerical analysis. Further, the rockfall vulnerable zone(unstable blocks) is considered to determine the parameters such as run-out distance, bounce height and energies of the falling rock blocks. The maximum total kinetic energy of 5047 kJ has been observed in the numerical analysis with the maximum run-out distance up to 18 m.

关键词： Rockfall hazards Rockfall simulation Rockfall hazard rating system(RHRS) Road cut slopes Slope stability

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Discrete Software Reliability Growth Modeling for Errors of Different Severity Incorporating Change-point Concept

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International Journal of Automation and computing 2007年第4期4卷 396-405页

作者： D.N.Goswami Sunil k.khatri Reecha kapur School of Studies in Computer Science and Applications Jiwaji UniversityGwalior 474011India Mother Teresa Institute of Management Guru Gobind Singh Indraprastha UniversityDelhi110092India Department of Mathematics and Computer Applications Bundelkhand UniversityJhansi 284128India

Several software reliability growth models （SRGM） have been developed to monitor the reliability growth during the testing phase of software development. In most of the existing research available in the literatures, it is considered that a similar testing effort is required on each debugging effort. However, in practice, different types of faults may require different amounts of testing efforts for their detection and removal. Consequently, faults are classified into three categories on the basis of severity： simple, hard and complex. This categorization may be extended to r type of faults on the basis of severity. Although some existing research in the literatures has incorporated this concept that fault removal rate （FRR） is different for different types of faults, they assume that the FRR remains constant during the overall testing period. On the contrary, it has been observed that as testing progresses, FRR changes due to changing testing strategy, skill, environment and personnel resources. In this paper, a general discrete SRGM is proposed for errors of different severity in software systems using the change-point concept. Then, the models are formulated for two particular environments. The models were validated on two real-life data sets. The results show better fit and wider applicability of the proposed models as to different types of failure datasets.

关键词： Discrete software reliability growth model non-homogeneous Poisson process fault severity change point probability generating function.

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Reliability Growth Modeling and Optimal Release Policy Under Fuzzy Environment of an N-version Programming System Incorporating the Effect of Fault Removal Efficiency

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International Journal of Automation and computing 2007年第4期4卷 369-379页

作者： P.k.kapur Anshu Gupta P.C.Jha Department of Operational Research University of DelhiDelhi-110007India

Failure of a safety critical system can lead to big losses. Very high software reliability is required for automating the working of systems such as aircraft controller and nuclear reactor controller software systems. Fault-tolerant softwares are used to increase the overall reliability of software systems. Fault tolerance is achieved using the fault-tolerant schemes such as fault recovery （recovery block scheme）, fault masking （N-version programming （NVP）） or a combination of both （Hybrid scheme）. These softwares incorporate the ability of system survival even on a failure. Many researchers in the field of software engineering have done excellent work to study the reliability of fault-tolerant systems. Most of them consider the stable system reliability. Few attempts have been made in reliability modeling to study the reliability growth for an NVP system. Recently, a model was proposed to analyze the reliability growth of an NVP system incorporating the effect of fault removal efficiency. In this model, a proportion of the number of failures is assumed to be a measure of fault generation while an appropriate measure of fault generation should be the proportion of faults removed. In this paper, we first propose a testing efficiency model incorporating the effect of imperfect fault debugging and error generation. Using this model, a software reliability growth model （SRGM） is developed to model the reliability growth of an NVP system. The proposed model is useful for practical applications and can provide the measures of debugging effectiveness and additional workload or skilled professional required. It is very important for a developer to determine the optimal release time of the software to improve its performance in terms of competition and cost. In this paper, we also formulate the optimal software release time problem for a 3VP system under fuzzy environment and discuss a the fuzzy optimization technique for solving the problem with a numerical illustration.

关键词： Fault tolerant software reliability growth model release time fuzzy optimization.

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Three-dimensional fuzzy graphene ultra-microelectrodes for subcellular electrical recordings

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Nano Research 2020年第5期13卷 1444-1452页

作者： sahil k.Rastogi Jacqueline Bliley Laura Matino Raghav Garg Francesca Santoro Adam W.Feinberg Tzahi Cohen-karni Department of Biomedical Engineering Carnegie Mellon UniversityPittsburghPA15213USA Center for Advanced Biomaterials for Healthcare Istituto Italiano di TecnologiaNaples80125Italy Department of Chemical Materials and Industrial Production EngineeringUniversity of Naples Federico IINaples80125Italy Department of Materials Science and Engineering Carnegie Mellon UniversityPittsburghPA15213USA

Microelectrode arrays(MEAs)have enabled investigation of cellular networks at sub-millisecond temporal ***,current MEAs are limited by the large electrode footprint since reducing the electrode’s geometric area to sub-cellular dimensions leads to a significant increase in impedance thus affecting its recording *** report a breakthrough ultra-microelectrodes platform by leveraging the outstanding surface-to-volume ratio of nanowire-templated out-of-plane synthesized three-dimensional fuzzy graphene(NT-3DFG).The enormous surface area of NT-3DFG leads to 140-fold reduction in electrode impedance compared to bare Au microelectrodes,thus enabling scaling down the geometric size by 625-fold to ca.2µm×2µ*** out-of-plane morphology of NT-3DFG leads to a tight seal with the cell membrane thus enabling recording of electrical signals with high signal-to-noise ratio(SNR)of>*** work highlights the possibility to push the limits of the conventional MEA technology to enable electrophysiological investigation at sub-cellular level without the need of any surface *** presented approach would greatly impact our basic understanding of signal transduction within a single cell as well as complex cellular assemblies.

关键词： microelectrode array ultra-microelectrodes electrical recordings biocompatible hybrid-nanomaterial 3D graphene cardiomyocytes

An innovation diffusion model for consumer durables with three parameters

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Journal of Management Analytics 2016年第3期3卷 240-265页

作者： Nitin Sachdeva P.k.kapur Ompal Singh Department of Operational Research University of DelhiDelhi Center for Interdisciplinary Research Amity UniversityNoidaUttar PradeshIndia

Strategic innovation diffusion converts newly created knowledge into increasing a firm’s value primarily through innovative product *** this paper,we present a time-based adoption pattern with pricing and promotional expenditure as a three-dimensional innovation diffusion model(3D-IDM).In our proposed 3D-IDM,we assume that value of the product plays a crucial role of being the major driver of diffusion,and is classified into the following three main factors:(1)continuation time of the product in the market–representing goodwill of the product;(2)price of the product–indicating consumers’buying behaviour;and(3)marketing efforts of the firm.A special form of the Cobb–Douglas production function is used to design the three-dimensional *** empirical study is performed on number of consumer-durable sales data to validate and compare the proposed *** performance measures are treated uniquely using the Mahalanobis distance-based approach(DBA)to determine the relative strength of each model.

关键词： innovation diffusion model three-dimensional innovation diffusion model Cobb-Douglas production function

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用有限单元法解板的稳定问题

南昌大学学报(工科版) 1980年第1期 59-73页

作者： kanwar k.kapur ,Biilly J.Hartz ,由敬舜

引言在土木、机械和航空结构的许多设计中,矩形板的临界屈曲荷载是一个重要因素。由于压缩、剪切和弯曲荷载引起板的屈曲情况,已被以前的研究人员广泛地讨论过,他们的工作已被Gpard和Becker作了充分地概括。

关键词：系数矩阵方程己知临界荷载有限单元法

柠檬酸氯美酚Clomiphene citrate对于已受消炎痛Indomethacin处理过的鲤鱼Cyprinus carpio的排卵Ovulation和产卵Spawning的影响

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国外水产 1981年第4期 9-12页

作者： k.kapur H.S.Toor 魏驷华

导言多数是在哺乳动物中进行的一系列研究阐明了前列腺素在排卵中的作用(Pharris和Shaw,1974等).近来,研究工作已经扩展到研究前列腺素对硬骨鱼类排卵的作用(Jalabert和Szollos,1975等).一种人工合成物柠檬酸氯美酚[1-ρ(β-乙=胺基乙... 详细信息

导言多数是在哺乳动物中进行的一系列研究阐明了前列腺素在排卵中的作用(Pharris和Shaw,1974等).近来,研究工作已经扩展到研究前列腺素对硬骨鱼类排卵的作用(Jalabert和Szollos,1975等).一种人工合成物柠檬酸氯美酚[1-ρ(β-乙=胺基乙氧)-酚-1,2-二酚-2-氯乙烯柠檬酸]也已用于治疗一些人类生殖机能不全(Jacobson等1968, kase 1973)和诱导硬骨鱼排卵(Pandey和Hoar,1972;Singh和Singh,1976;kapur和Toor,1978).已有报导指出氯美酚可作用于鲤鱼***脑下丘——脑垂体以刺激促性腺激素的分泌(Breton等,

关键词：消炎痛剂量 Indomethacin Cyprinus carpio 用药量 Spawning Ovulation 鲤鱼柠檬酸抗氧化剂

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与总统家族做生意是把双刃剑

商业周刊（中文版） 2017年第10期 28-29页

作者： sahil kapur 谭天

美吲总统特朗普就职4周后，他的两个儿子为迪拜特朗普国际高尔夫俱乐部举办了隆重的开业典礼。客人们津津有味地品尝着鹌鹁蛋、金枪鱼塔塔和春卷，弦乐队演奏着意大利著名作曲家维瓦尔第创作的乐曲。

关键词：总统双刃剑生意家族高尔夫俱乐部开业典礼维瓦尔第特朗普