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Plastic and Aesthetic Research 2023年第1期10卷 389-414页

作者： Amy Chen Shannon R.Garvey Asha nanda Bernard T.Lee Ryan P.Cauley Division of Plastic and Reconstructive Surgery Department of SurgeryBeth Israel Deaconess Medical CenterHarvard Medical SchoolBostonMA 02215USA

Autologous free tissue transfer is a safe and effective option for breast *** is an increasingly utilized technique with well-demonstrated improved patient satisfaction and quality of *** thrombosis is a rare but significant complication of microsurgical breast reconstruction,often resulting in flap *** diagnosis and timely management of this complication are essential to free flap *** microvascular thrombosis poses a threat to flap survival,several methods may be employed to mitigate its more devastating ***,we present a comprehensive review of arterial and venous thrombotic complications in both the intraoperative and postoperative *** discuss preoperative risk assessment,methods for flap monitoring,and operative and medical management of thrombotic *** present an updated algorithm for the intraoperative management of microvascular thrombosis adapted to reflect the most recent literature and our novel algorithm for the postoperative management of microvascular thrombosis.

关键词： Breast microsurgery free flap monitoring free flap thrombosis free flap salvage

Agile Development: Exploring What Practitioners Want to Know

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Journal of Software Engineering and Applications 2018年第1期11卷 1-11页

作者： nanda C. Surendra Salman Nazir Management Information Systems College of Business & Economics West Virginia University Morgantown WV USA

Agile development has its origins and roots in practice rather than academia. Hence, in this research, we go to the practitioners’ world to explore what they want to know about Agile development. We conducted our study using a multi-methodological approach, a combination of a survey and an interpretive case study. We learned that Agile development is yet to reach a mature phase with: a) relatively limited numbers of experienced Agile practitioners;b) a large number of software developers who were trained in plan-based Waterfall development trying to transition to Agile;c) some companies and practitioners continuing to be skeptical of the benefits of Agile development over plan-based development;and d) tools in the process of being developed to support Agile development. Based on those factors, we learned that practitioners are wanting to find answers to the following questions: a) What should good Agile practitioners and teams know and do? b) How to train developers and teams to become good Agile practitioners? c) How to transition from plan-driven Waterfall development to Agile development? d) What tools are available to practice Agile development? How to use them to support Agile practices? The following are the answers we derived from our interpretive case study for the above four questions: a) Good Agile practitioners define their job in terms of the client’s mission;they don’t define their jobs as analysts, designers, programmers, testers, or project managers;b) For training, Agile practices such as test-driven development and continuous integration are best understood not in theory but by the act of doing;for organizational adoption of Agile development, Agile practices should be used not only in software development but encouraged in all functional areas;c) The best way to introduce a plan-based Waterfall practitioner to Agile is to have him think of Agile in terms of something familiar, as a series of mini-waterfalls that have very quick iterations;d) Simple

关键词： Agile Development Case Study Research Agile Practice Scrum Agile Teams Software Development Waterfall Development

PNPLA3 polymorphism increases risk for and severity of chronic hepatitis C liver disease

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World Journal of Hepatology 2016年第35期8卷 1584-1592页

作者： Habeeb Salameh Maen Masadeh Muhannad Al Hanayneh Vincent Petros Matthew Maslonka Arjun nanda Ashwani K Singal Department of Internal Medicine Division of Gastroenterology and Hepatology University of Texas Medical Branch Department of Internal Medicine Division of Gastroenterology and Hepatology University of Iowa Department of Internal Medicine University of Texas Medical Branch Division of Gastroenterology and Hepatology University of Alabama

AIM To examine the association of PNPLA3 polymorphisms in chronic hepatitis C patients and development of liver disease spectrum. METHODS Literature was searched systematically from Pub Med/MEDLINE, EMBASE, and Cochrane search engines for full-length articles written in English that examined PNPLA3 polymorphism in chronic hepatitis C(CHC) patients. Studies evaluating the association of PNPLA3 polymorphism spectrum(fatty liver, steatohepatitis, cirrhosis, and hepatocellular carcinoma) of CHC were included. Pooled data are reported as OR with 95%CI. Our study endpoint was the risk of the entire liver disease spectrum including: Steatosis/fatty liver, cirrhosis, and hepatocellular carcinoma in CHC patients with PNPLA3 *** Of 380 studies identified, a total of 53 studies were included for full-text review. Nineteen on chronic he-patitis C were eligible for analysis. Pooled ORs for rs738409 GG compared to CC and CG among patients with fatty liver was 2.214(95%CI: 1.719-2.853). ORs among advanced fibrosis/cirrhosis were 1.762(95%CI: 1.258-2.468). Similar odds ratios among hepatocellular carcinoma patients were 2.002(95%CI: 1.519-2.639). Pooled ORs for rs738409 GG and CG compared to CC among patients with fatty liver were 1.750(95%CI: 1.542-1.986). Pooled ORs for advanced fibrosis/cirrhosis patients were 1.613(95%CI: 1.211-2.147). All analyses were homogenous and without publication bias except one. The associations were maintained after adjusting for publication bias and heterogeneity. CONCLUSION PNPLA3 polymorphisms have strong association with increased risk and severity of the liver disease spectrum in CHC patients.

关键词： PNPLA3 polymorphism Cirrhosis rs738409 Hepatitis C virus Hepatocellular carcinoma

Sensorless Vector Control of Induction Generators for Variable-Speed Wind Turbines Using Micro-2407

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Energy and Power Engineering 2012年第4期4卷 248-254页

作者： Rabinarayana Parida Bibhu Prasad nanda Jibanananda Mishra Oec Bbsr Bput India Sit Bbsr Bput India

A sensorless vector-control strategy for an induction generator in a grid-connected wind energy conversion system is presented. The sensorless control system is based on a model reference adaptive system (MRAS) to estimate the rotational speed. In order to tune the MRAS observer and compensate for the parameter variation and uncertainties, a separate estimation of the speed is obtained from the rotor slot harmonics using an algorithm for spectral analysis. This algorithm can track fast dynamic changes in the rotational speed, with high accuracy. Two back to back pulse width modulated (PWM) inverters are used to interface the induction generator with the grid. The front-end converter is also vector controlled. The dc link voltage is regulated using a PI fuzzy controller. The proposed sensorless control strategy has been experimentally verified on a 2.5-kW experimentally set up with an induction generator driven by a wind turbine emulator. The emulation of the wind turbine is performed using a novel strategy that allows the emulation of high-order wind turbine models, preserving all of the dynamic characteristics. The experimental results show the high level of performance obtained with the proposed sensorless vector-control method.

关键词： Fuzzy Logic Induction Generator Induction Motor Drives Spectral Analysis Wind Energy

Investment in Generation of Photovoltaic Solar Energy: A Fezsibility Study with Flexibility and Uncertainty

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Energy and Power Engineering 2023年第7期15卷 241-263页

作者： Lucimeire Cordeiro da Silva Tara Keshar nanda Baidya Programa de Pós-Graduaç &atildeo em Administra&ccedil&atildeo UNIGRANRIO Universidade Grande Rio Rio de Janeiro Brazil Escola de Gestã o e Negócios UNIFOA Centro Universitário de Volta Redonda Volta Redonda/RJ Brazil

The objective of this research will be to calculate the feasibility of investing in a solar energy generation project through the development of a methodology that allows the capture of environmental uncertainties by improving decision making. The article presents a comparative study of the feasibility analysis of investment in a solar mini solar energy for a Shopping, considering a regime of certainty and uncertainty. The assumed stochastic variables were energy tariff and price of solar panels. The trajectories were simulated with the binomial approach that combined resulted in a quadratic diagram. The applied methodology presented the best recommendation and the option to wait was the most valuable. The exchange of the energy obtained from LIGHT by own generation of energy with solar photovoltaic source will be viable for the manager since it observes the behavior of the variables over time and follows the rules of optimal decision.

关键词： Real Options Self-Generation Decision Making Solar Energy Feasibility of Investment

Cytokinin, Carbon Source, and Acclimatization Requirements for in VitroPropagation of Scutellaria barbataD. Don and Scutellaria racemosaPers.

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American Journal of Plant Sciences 2014年第24期5卷 3662-3672页

作者： Terri Ann Brearley Brajesh nanda Vaidya Nirmal Joshee Agricultural Research Station Fort Valley State University Fort Valley GA USA

Micropropagation protocols to minimize hyperhydricity were optimized for medicinal Scutellaria barbata and Scutellaria racemosa. Six cytokinins and eight different carbon sources at two different incubation periods of 14 and 21 days were studied for adventitious shoot bud induction using nodal explants. In S. barbata, 5 μM meta-Topolin and 0.1 μM NAA supplemented shoot induction medium produced four shoots each after 14 and 21 day incubation. Observation of S. racemosa nodal explants recorded four and five shoots after 14 and 21 day incubation. In both species, control explants (no plant growth regulators in the medium) consistently resulted in the bud break with two shoots in both 14 and 21 day incubation. The effect of carbon source on shoot regeneration was studied by supplementing eight different sugars at 0.1 M concentration to the optimized shoot induction medium (5 μM meta-Topolin and 0.1 μM NAA). S. barbata nodal explants cultured on shoot induction medium supplemented with fructose and glucose for 14 days produced 10 and nine adventitious shoots respectively;and after 21 day incubation adventitious shoot count reached 19 in glucose supplemented medium. S. racemosa explants in the same experiment produced five shoots in maltose and four shoots in sorbitol supplemented medium after 14 day incubation;whereas after 21 day incubation, sucrose and maltose produced five shoots;fructose, glucose, and sorbitol produced four shoots. Regenerated plants were successfully acclimatized and Scanning Electron Microscopy of the leaf surface revealed differences in stomatal behavior and cuticle deposition between in vitro and acclimatized plants. The antioxidant assay conducted on both Scutellaria species showed considerable total polyphenol content, TEAC activity and flavonoid content in fresh and dried leaf samples attributing to their medicinal potential.

关键词： Antioxidant 6-Benzylaminopurine Flavonoid meta-Topolin Polyphenol RIM SIM

Incoherent Fourier ptychographic photography using structured light

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Photonics Research 2015年第1期3卷 19-23页

作者： Siyuan Dong Pariksheet nanda Kaikai Guo Jun Liao Guoan Zheng Biomedical Engineering University of Connecticut Electrical and Computer Engineering University of Connecticut

Controlling photographic illumination in a structured fashion is a common practice in computational photography and image-based rendering. Here we introduce an incoherent photographic imaging approach, termed Fourier ptychographic photography, that uses nonuniform structured light for super-resolution imaging. In this approach,frequency mixing between the object and the structured light shifts the high-frequency object information to the passband of the photographic lens. Therefore, the recorded intensity images contain object information that is beyond the cutoff frequency of the collection optics. Based on multiple images acquired under different structured light patterns, we used the Fourier ptychographic algorithm to recover the super-resolution object image and the unknown illumination pattern. We demonstrated the reported approach by imaging various objects, including a resolution target, a quick response code, a dollar bill, an insect, and a color leaf. The reported approach may find applications in photographic imaging settings, remote sensing, and imaging radar. It may also provide new insights for high-resolution imaging by shifting the focus from the collection optics to the generation of structured light.

关键词： FPP OTF high

Eco-Friendly Smokeless Al_2O_3-SiC-C Brick for Hot Metal Ladle

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China's Refractories 2008年第1期17卷 18-21页

作者： Santanu MUKHOPADHYAY Shankha CHATTERJEE Manoj K nanda Orind Refractories Limited China

Hot metal transfer ladles were historically lined with high alumina refractories because of compatibility of high alumina refractories with the highly acidic slag, which is transferred .from the iron making plant along with hot metal. With the introduction of higher capacity ladles, technological advancement in the process and increased productivity, calls for a higher campaign life of hot metal ladles, which could not be performed by ordinary high alumina refractories. Resin bonded Al2O3- SiC-C （hereinafter ASC ） bricks gradually developed which at present taking place replacing the conventional refractories. Considerable work has been carried out in developing the ASC refractory to reach the present state. However, for higher capacity ladles still there is a lot of scope for improvement. The present paper deals with the newly developed ASC bricks, which was used in 165 ton capacity hot metal ladles in one European plant and has given a substantial increase in performance. But, the customer was not fuUy satisfied since the brick was reported to produce smokes during preheating of the ladle. In the subsequent supply the smoke generation problem was taken care by adjusting the binders and additives and eco-friendly bricks were re-engineered and supplied to the same plant, which also performed splendidly and created all time record in their plant history.

关键词： Alumina-silicon carbide-carbon brick Hot metal ladle Eco-Friendly

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面部软组织侧貌的生长变化

国外医学（口腔医学分册） 1992年第3期19卷 174-175页

作者： Ram S.nanda 司新芹

作者对40名年龄在7～18岁的北欧后裔白种人面部软组织侧貌的纵向生长变化进行了研究。鼻、上唇、下唇及頦软组织的厚度在研究期间都有不同程度的增长。文中对17名男性和23名女性的测量结果作了比较并进行了讨论。

关键词：正畸面部侧貌生长发育

印尼学生对普通话阳平和上声的感知与发音研究 ——以印尼坤甸市的汉语学习者为例

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印尼学生对普通话阳平和上声的感知与发音研究 ——以印尼坤甸市...

作者： nanda Lailatul Qadriani（陈秀雅）上海外国语大学

学位级别：硕士

外国学生学习汉语声调既是个重点又是个难点。因为汉语的声调有区别意义的作用,因此为了能准确表达自己的思想,外国学生务必要学好声调。但在学习的过程中,外国学生学习声调时会遇到不少的困难,因此声调也就成为了他们学习汉语的难点之... 详细信息

外国学生学习汉语声调既是个重点又是个难点。因为汉语的声调有区别意义的作用,因此为了能准确表达自己的思想,外国学生务必要学好声调。但在学习的过程中,外国学生学习声调时会遇到不少的困难,因此声调也就成为了他们学习汉语的难点之一。对于母语无声调的印尼学生,声调最大的难点主要在于阳平与上声上。因此,本文通过语音感知实验与发音实验方法试图找出印尼学生在知觉上与发音上的情况,找出印尼学生经常混淆阳平与上声的主要原因。本人希望通过此研究可以为汉语作为第二语言教学领域提供参考、找出更有针对性的教学方法,以帮助老师与学生克服声调教学方面的困难。本文的内容包括五章,分别为:第一章绪论,包括本人选择此题目的缘由、国内外的声调感知与发音的研究以及本人拟解决的问题与研究思路;第二章阳平上声的感知研究,包括本文感知实验的研究对象、研究材料、研究操作方法以及使用R数据分析软件及Excel微软进行数据统计与分析;第三章阳平上声的发音研究,包括发音实验的研究对象、研究材料、操作方法、实验结果的主观评判与客观统计与分析。发音实验的主观评判是邀请汉语母语者来听辩被试者的声调正误,找出被试者发音错误的比率;客观分析是通过Praat软件分析被试者的声调语图和偏误原因。另外,本文还使用LZ归一化方法与T值计算法来找出被试者所发的阳平与上声在调型与调值上的情况。第四章针对阳平与上声的教学建议,其中包括加强语音输入的训练、使用实验语音学的声调分析软件、设计多样化的口语训练方法等。第五章结论。本研究得出的结论是印尼学生在感知上已有范畴感知的倾向,即把拐点频率低、拐点时间较靠前的刺激项判断为阳平,而对于拐点频率高、拐点时间较靠后都判断为上声,但至于范畴边界何在还需要进行进一步的统计。发音实验结果显示,印尼学生在单字调、双字调与语流上的阳平和上声都存在一些错误。根据归一化与T值计算发现印尼学生在调型与调值上同样也存在问题。后文本文还补充研究中所用到的一些资料与参考文献。

关键词：印尼学生阳平上声感知研究发音研究