检索结果-南通市图书馆

Positive- and Zero-Sequence Impedance estimation of YNyn0+d-Connected Main Power Transformers in Wind Power Applications

在线全文

学校读者我要写书评

暂无评论

CSee Journal of Power and energy Systems 2021年第1期7卷 57-65页

作者： Franklin L.Quilumba robert e.Jimerson Ken Swift Rafael Garc´ıa with Oncor electric Delivery Fort WorthTX 76102 USA

With the increased penetration of non-conventionalrenewable energy resources, such as wind power plants (WPPs),into the power system, a lot of interest has been placed on studyingtheir impact for system protection, planning and operationsto ensure continued reliability of the electric grid. The impactof WPPs on the grid is typically identified during generationinterconnection studies. One of the challenges faced by protectionand planning engineers, at an early stage in this process, isthat many of the studies involving these power plants must beperformed without specific data available because the equipmentis not built yet. Among all the needed data, a particular interest inthis study is placed on the positive- and zero-sequence impedancesof the main power transformer (MPT) that interconnects a windpower plant to the transmission system due to its contribution toshort-circuit current during ground faults. The most commonlyfound in practice MPT winding configurations is a high-voltagewinding in wye with neutral bushing;a low-voltage windingin wye with neutral bushing without phase shift between thesewindings, and a stabilizing tertiary winding connected in deltathat is not designed for external loading designated as YNyn0+***, this paper proposes a methodology to estimate the sequenceimpedances of YNyn0+d transformers from a statistical point ofview applying clustering and regression analyses on existing MPTtest report data.

关键词： Positive-and zero-sequence impedance estimation power transformers short-circuit analysis threewinding transformer with buried tertiary wind power integration

Derivatives : Markets, Valuation, and Risk Management HAR/CDR

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The role of intermediaries in US workforce and education innovation

丛书名： The Wiley Finance Series

2006年

作者： robert e. Whaley

ISBN: (纸本)9780471786320;9780470086384

robert Whaley has more than twenty-five years of experience in the world of finance, and with this book he shares his hard-won knowledge in the field of derivatives with you. Divided into ten information-packed parts, Derivatives shows you how this financial tool can be used in practice to create risk management, valuation, and investment solutions that are appropriate for a variety of market situations.

关键词： Derivative securities--Marketing Derivative securities--Valuation Financial risk management

来源：畅想之星图书光盘版（南... 评论

在线全文

畅想之星图书光盘版（南通市图书馆镜像）

学校读者我要写书评

暂无评论

economic and Political Studies 2023年第2期11卷 252-273页

作者： robert P.Giloth Formerly The Annie e.Casey Foundation BaltimoreMDUSA

Intermediaries are specialised organisations that perform bridging and integrative functions to achieve improved results of social *** have been most effective in the United States(US)when aligned with education and workforce system improvements and redesign,not as parallel and separate *** operate in many US social policy domains,including workforce and education,where they contribute to overcoming fragmented institutions and solving mismatch problems that interfere with hiring,career pathways and educational *** solutions are especially important for creating better outcomes for low-income students and workers and improving overall racial and ethnic *** mismatches especially prevalent in the US labour market require intermediary solutions:organising business to improve human resources,creating improved pathways from school to work,integrating and focussing multiple education investments,linking workforce and economic development,and improving access and use of data for design,performance management and *** paper discusses these mismatches and related intermediary solutions in more depth,offers examples of specific intermediaries in action and identifies intermediary challenges and opportunities faced by intermediaries to function *** paper also points out that,more broadly,intermediaries are only a part of the solution to labour market and education inequalities and that broader changes in the political economy and policies are required to effect wage growth and labour market participation.

关键词： Intermediaries US workforce education labour market economic development

The Fundamentals of Aircraft Combat Survivability: Analysis and Design, 2nd edition 2nd ed.

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Fine-tuning the response of growth cones to guidance cues: a perspective on the role of microRNAs

丛书名： AIAA education Series

2003年

作者： robert e. Ball

ISBN: (数字)9781600862519

ISBN: (纸本)9781563475825

Winner of the Summerfield Book Award!Aircraft combat survivability is now an established design discipline for U.S. military aircraft. More importantly, survivability is now an essential part of the U.S. Department of Defense acquisition process. This is the only book of its kind and required reading for anyone involved in design of air combat vehicles. Further, improving public health, safety, and survivability is now woven throughout the civil and commercial sector. From infant car seats to the design of aircraft cargo bay structure that can withstand internal bomb blasts, the government is taking the lead in establishing survivability standards. This is an extensively illustrated text that presents the fundamentals of the aircraft combat survivability design discipline as defined by the DoD Military Standard issued in 1981. It provides the history of, the concepts for, and the assessment methodology and the design technology for the nonnuclear combat survivability analysis and design of fixed and rotary wing aircraft and missiles. Of critical interest to anyone involved in the design and development of military aircraft or airborne weapon systems, the book also will be useful to weapon system effectiveness *** Fundamentals of Aircraft Combat Survivability: Analysis and Design on CD-ROM is included with your purchase of the hardcover. The CD-ROM gives you the portability and searchability that you need in your busy environment. It is considerably smaller and lighter than the textbook so it is available when you are away from the office or traveling. It can also be searched to quickly locate a particular word or phrase.

关键词： Aeronautics Air Forces Aircraft Components and Structure Aircraft Conceptual Design Aircraft Control Aircraft Design Aircraft Flight Control System Aircraft Fuel System Aircraft Instruments Aircraft Operations Aircraft Operations and Technology Aircraft Performance Aircraft Stability and Control Aircraft Stabilizer Aircraft Wing Design Aircrafts Aircrew Artillery Systems Auxiliary Power Unit Aviation Aviation Communication Aviation Publications Ballistics Civil Aircraft Civil Aviation Combat Aircraft Commercial Aviation Communication System Computing, Information, and Communication electrodynamics electromagnetic Radiation electromagnetism emergency Landing Fixed-Wing Aircraft Flight Control Surfaces Flight Display Systems Fuel Management System General Physics Helicopters Military Aircraft Military Aviation Military Helicopter Military Science Military Technology Missile Systems, Dynamics and Technology Projectiles RADAR Rotorcrafts Short Takeoff and Landing Stealth Aircraft Takeoff and Landing Unmanned Aerial Vehicle Vertical Takeoff and Landing Weapon Systems

来源：畅想之星图书光盘版（南... 评论

在线全文

畅想之星图书光盘版（南通市图书馆镜像）

学校读者我要写书评

暂无评论

Neural Regeneration Research 2019年第10期14卷 1719-1720页

作者： Sarah e.Walker Gaynor e.Spencer robert L.Carlone Department of Biological Sciences Brock University

In the development and regeneration of the nervous system, neurons face the complex task of establishing and/or repairing neuronal connections and contacts. The formation of these neuronal circuits is largely coordinated by tightly regulated temporal and spatial changes in mRNA translation, which enables incredibly precise control over protein expression and localization (Jung and Holt, 2011). Local mRNA translation in specific cellular compartments appears to play a role in many processes that are important to nervous system development and regeneration, including: cell survival, migration, growth cone guidance, and synaptogenesis (Jung and Holt, 2011).

关键词： In the development nervous system synaptogenesis

Modularized Production of Value-Added Products and Fuels from Distributed Waste Carbon-Rich Feedstocks

在线全文

学校读者我要写书评

暂无评论

engineering 2018年第3期4卷 330-335页

作者： robert S. Weber Johnathan e. Holladay Pacific Northwest National Laboratory Richland WA 99352 USA

我们对电解反应堆进行了改造和表征,以完善区域和社区规模的废弃物向燃料或化学品的转化过程。整个过程必须能够适应各种原料,具有内在的安全性,并且不应依赖外部设施获得共反应物或增加排热量和供热量。我们目前的方法是基于对含碳废... 详细信息

我们对电解反应堆进行了改造和表征,以完善区域和社区规模的废弃物向燃料或化学品的转化过程。整个过程必须能够适应各种原料,具有内在的安全性,并且不应依赖外部设施获得共反应物或增加排热量和供热量。我们目前的方法是基于对含碳废弃物的水热液化(HTL)生产的生物油进行升级。HTL可以将各种原料转化为生物油,与其他解构生物质的方式相比,它需要的升级要少得多。我们目前正在研究电化学过程的使用,以进一步将HTL产生的生物油转化为燃料或价值更高的化学品。我们和其他一些研究者已经证明,电化学还原可以提供足够的反应速率,至少在很小的程度上提供了一些必要的通用性。此外,电化学反应器必须在反应器的一侧氧化(去除电子)并在另一侧还原(添加电子)。因此,原则上,这两种类型的反应可以结合以提升生物油的性能,并改善在上游HTL中用作反应物和载体的水质。在这里,我们对假定流程、可能的转化化学和HTL电化学过程的经济性进行了概述。

关键词：减少污染物的产生和排放化学工程

Photonics immunotherapy-A novel strategy for cancer treatment

在线全文

学校读者我要写书评

暂无评论

Journal of Innovative Optical Health Sciences 2016年第1期9卷 1-11页

作者： Feifan Zhou robert e.Nordquist Wei R.Chen Biophotonics Research Laboratory Center for Interdisciplinary Biomedical education Research College of Mathematics and Science University of Central Oklahoma edmond Oklahoma 73034 USA Immunophotonics Inc. St.LouisMissouri 63108USA

Photonics immunotherapy is a novel cancer treatment strategy that combines local phototherapy and *** is a noninvasive or minimally invasive therapeutic strategy for local treatment of cancer,which can destroy tumor cells and release tumor antigens,inducing an in situ antitumor immune ***,including the use of antibodies,vaccines,immunoadjuvants and cytokines,when combined with phototherapy,could bring a synergistic effect to stimulate a host immune response that effectuates a long-term antitumor *** review will focus on the development of photonics immunotherapy and its systemic antitumor immunological effects.

关键词： Photonics immunotherapy cancer phototherapy immunotherapy immune response

A scheme for simulating multi-level phase change photonics materials

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

npj Computational Materials 2021年第1期7卷 1670-1679页

作者： Yunzheng Wang Jing Ning Li Lu Michel Bosman robert e.Simpson Singapore University of Technology and Design(SUTD) 8 Somapah Road487372 SingaporeSingapore Department of Materials Science and engineering National University of Singapore9 Engineering Drive 1117575 SingaporeSingapore

Chalcogenide phase change materials(PCMs)have been extensively applied in data storage,and they are now being proposed for high resolution displays,holographic displays,reprogrammable photonics,and all-optical neural *** wide-ranging applications all exploit the radical property contrast between the PCMs’different structural phases,extremely fast switching speed,long-term stability,and low energy *** PCM photonic devices requires an accurate model to predict the response of the device during phase ***,we describe an approach that accurately predicts the microstructure and optical response of phase change materials during laser induced *** framework couples the Gillespie Cellular Automata approach for modelling phase transitions with effective medium theory and Fresnel *** accuracy of the approach is verified by comparing the PCM’s optical response and microstructure evolution with the results of nanosecond laser switching *** anticipate that this approach to simulating the switching response of PCMs will become an important component for designing and simulating programmable photonics *** method is particularly important for predicting the multi-level optical response of PCMs,which is important for all-optical neural networks and PCM-programmable perceptrons.

关键词： phase neural microstructure

Red osier dogwood and its use in animal nutrition:A review

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Animal Nutrition 2023年第2期13卷 64-77页

作者： Taiwo Joseph erinle Martine Boulianne Younes Miar robert Scales Deborah Adewole Department of Animal Science and Aquaculture Faculty of AgricultureDalhousie UniversityTruro NSB2N 5E3Canada Department of Clinical Sciences Faculty of Veterinary MedicineUniversity of Montreal3200 Sicotte StreetSaint-Hyacinthe QCJ2S 2M2Canada Red Dog enterprises Ltd. Swan River MBR0L 1Z0Canada

As the human population increases globally,the food animal industry has not been spared from the monumental demand for edible animal products,particularly *** has necessitated the simulta-neous expansion of the productivity of the animal sector to meet the ever-growing human *** antibiotics have been used in food animal production with commendable positive impacts on their growth performance,their sole contributive factor to the increasing incidence of antimicrobial resistance has ushered the strict restrictions placed on their use in the animal *** has handed a setback to both animals and farmers;thus,the intense push for a more sustainable antibiotic alternative for use in animal *** use of plants with concentrated phytogenic compounds has gained much interest due to their beneficial bioactivities,including antioxidant and selective *** the reported beneficial activities of phytogenic additives on animals vary due to their varying total polyphenol concentrations(TPC),red osier dogwood(ROD)plant materials boast of high TPC with excellent antioxidant prowess and growth improvement capacities compared to some plant extracts commonly used in ***,its adoption in research and commercial scale is still ***,the present review aims to provide concise information on the dietary potential of ROD plant materials in animal feeding.

关键词： Red osier dogwood Antibiotic-alternative Polyphenolic compounds Antioxidant Antimicrobial