检索结果-内蒙古大学图书馆

7th Congreso Internacional de Innovacion y Tendencias en Ingenieria, CONIITI 2021

作者： Sanchez, Yuly Mehrvar, Mehrab McCarthy, Lynda Quinones, Edgar Cheu, Luis Romero, Jairo Escuela Colombiana de Ingeniería 'Julio Garavito' Bogotá Colombia Ryerson University Department of Chemical Engineering Toronto Canada Universidad de Cartagena PhD Program Cartagena Colombia Center for Environment Studies Escuela Colombiana de Ingeniería 'Julio Garavito' Bogotá Colombia

ISBN: (纸本)9781665402217

The objective of this study is to present a preventive measures pertaining to COVID-19 in swimming pools and hot springs in Europe, Canada, United States, and Colombia. After the start of pandemic, all swimming pools, beaches, and hot springs in Colombia were closed. Currently, official management plans have yet to be presented for the opening of hot springs and swimming pools. However, the European Association of Water Parks presents a two-stage reopening plan for public recreation centres, while countries such as United States, Australia, Canada, China, and Austria follow similar measures. Among the most representative management measures mandated to prevent the spread of the virus, medical authorities from a variety of governments have collectively recommended the following: i) maintaining rigorous social distancing, ii) cleaning or disinfection of surfaces and common areas routinly, iii) maintaining healthy environments and most importantly, iv) personal care (ie. if not feeling well, stay home and do not put others at risk). © 2021 IEEE.

关键词： COVID-19

来源：评论

学校读者我要写书评

暂无评论

Mechanistic insights of evaporation-induced actuation in supramolecular crystals (Sept, 10.1038/s41563-020-0799-0, 2020)

引用

NATURE MATERIALS 2021年第3期20卷 434-434页

作者： Piotrowska, Roxana Hesketh, Travis Wang, Haozhen Martin, Alan R. G. Bowering, Deborah Zhang, Chunqiu Hu, Chunhua T. McPhee, Scott A. Wang, Tong Park, Yaewon Singla, Pulkit McGlone, Thomas Florence, Alastair Tuttle, Tell Ulijn, Rein V. Chen, Xi Advanced Science Research Center (ASRC) at the Graduate Center of the City University of New York New York NY USA PhD Program in Chemistry The Graduate Center of the City University of New York New York NY USA Department of Pure and Applied Chemistry University of Strathclyde Glasgow UK PhD Program in Physics The Graduate Center of the City University of New York New York NY USA EPSRC Continuous Manufacturing and Crystallisation Future Research Hub c/o Strathclyde Institute of Pharmacy and Biomedical Sciences Technology Innovation Centre University of Strathclyde Glasgow UK Department of Chemistry New York University New York NY USA Department of Chemistry and Biochemistry Hunter College City University of New York New York NY USA Department of Chemical Engineering The City College of New York New York NY USA

A Correction to this paper has been published: https://***/10.1038/s41563-021-00950-3.

关键词： Condensed-matter physics Materials science Soft materials

来源：评论

学校读者我要写书评

暂无评论

Probabilistic Power Flow Analysis Based on Low Rank Approximation and Principle Component Analysis

Probabilistic Power Flow Analysis Based on Low Rank Approxim...

引用

Conference on Power, Energy and Innovations (ICPEI)

作者： Jirasak Laowanitwattana Sermsak Uatrongjit PhD’s Degree Program in Electrical Engineering Faculty of Engineering Chiang Mai University Chiang Mai Thailand Faculty of Engineering Chiang Mai University Chiang Mai Thailand

Probabilistic power flow (PPF) analysis is usually applied for evaluating the effects of uncertain parameters on power system performances. This paper presents a technique to enhance the arbitrary polynomial chaos expansion (aPCE) based PPF analysis technique when applying to system with many uncertain parameters. The proposed method represents a power system response as low rank approximation (LRA). In addition, the principle component analysis (PCA) is applied to reduce the number of uncertain parameters and also de-correlate them. This combination enables the proposed method to perform PPF of the power system having large number of uncertain parameters. Based on preliminary numerical results on the modified IEEE 57-bus system, it can be noticed that the proposed modified method is able to find accurate statistical characteristics of the responses but uses less computation time compared to the MCS based PPF analysis.

关键词： Chaos Technological innovation Probabilistic logic Power systems Principal component analysis Load flow analysis

来源：评论

学校读者我要写书评

暂无评论

Dish-Trend: Intervention Modeling Simulator That Accounts for Trend Influences

Dish-Trend: Intervention Modeling Simulator That Accounts fo...

引用

2021 Winter Simulation Conference, WSC 2021

作者： Andjelkovic, Stefan Miskov-Zivanov, Natasa Computational and Systems Biology Joint Carnegie Mellon University University of Pittsburgh Computational Biology PhD Program University of Pittsburgh PittsburghPA15213 United States Electrical and Computer Engineering Bioengineering Computational and Systems Biology University of Pittsburgh PittsburghPA15213 United States

ISBN: (纸本)9781665433112

Simulation on directed graphs is an important method for understanding the dynamics in the systems where connectivity graphs contain cycles. Discrete Stochastic Heterogeneous Simulator (DiSH) is one of the simulation tools with wide application, which uses regulator values to calculate state updates of regulated elements. Here we present a new simulation approach DiSH-trend which also takes into account the trends in regulating elements. We demonstrate the features of trend-based regulation, as well as hybrid regulation, which is a combination of the trend-and level-based approaches. The modeling capabilities are demonstrated on a small toy model, showcasing different functionalities. Real-world capabilities are demonstrated on a larger network model of food insecurity in the Ethiopian region Oromia. Adding trend-based regulation to models results in increased modeling flexibility, and hybrid regulation improves qualitative dynamic behavior prediction. With appropriate data, DiSH-trend becomes a powerful tool for exploring intervention strategies. © 2021 IEEE.

关键词： Directed graphs

来源：评论

学校读者我要写书评

暂无评论

What Role Do Aggregators Play in Power System Security and Resilience?

What Role Do Aggregators Play in Power System Security and R...

引用

2023 Resilience Week, RWS 2023

作者： Matsuda-Dunn, Reiko Leddy, Laura Hotchkiss, Eliza Gautam, Mukesh Abdelmalak, Michael National Renewable Energy Laboratory GoldenCO80401 United States Colorado School of Mines Advanced Energy Systems PhD Program GoldenCO80401 United States University of Nevada at Reno Department of Electrical and Biomedical Engineering RenoNV89557 United States

ISBN: (纸本)9798350347470

Barriers to the participation of distributed energy resources (DERs) in wholesale electricity markets have limited the use of DERs for power system security and resilience. In September 2020, the Federal Energy Regulatory Commission (FERC) approved an order to reduce these barriers. FERC Order No. 2222 enables the participation of DER aggregators in wholesale electricity markets. DERs include renewable generation and technologies that support the integration of renewable generation by increasing grid flexibility and resilience. Requiring wholesale energy markets to allow DER aggregator participation provides a path for DERs to become competitive in these markets. As the contribution from aggregated DERs continues to increase, the aggregator's role in supporting grid security and resilience will become more critical. This paper reviews work that demonstrates how DER aggregators can provide resilience support through technical capabilities, operational strategies, and secure communication architectures. Socioeconomic influences and impacts of aggregators, including implications for social resilience, are presented. In surveying the current state-of-the-art across different but interconnected topics, we illustrate how aggregators can be power system participants that enhance grid security. There is no one-size-fits-all approach to enhancing resilience in a power grid that includes a growing cohort of DER aggregators, but there are many options for aggregators to contribute to a more resilient and secure power grid. © 2023 IEEE.

关键词： Power markets

来源：评论

学校读者我要写书评

暂无评论

A New Fuzzy Logic Application To Search the Optimal Step Size For NLMS Beamforming

A New Fuzzy Logic Application To Search the Optimal Step Siz...

引用

International Conference on Telecommunications and Signal Processing

作者： Walter Orozco-Tupacyupanqui Hector Perez-Meana Mariko Nakano-Miyatake Graduated PhD program in Communication and Electronic Engineering National Polytechnic Institute Graduate studies and Research section of The Mechanical and Electrical Engineering School National Polytechnic Institute

ISBN: (纸本)9781479984992

This paper proposes a new application based on fuzzy logic to search the optimal Step Size of the Normalized Least Mean Square (NLMS) algorithm for beamforming systems. The searching of the step size depends on the fuzzy inference results of an estimation of the final value of the cost function (J_E) instead of using its instantaneous value. The update of the step-size is performed outside of the adaptive algorithm and given it feedback by the fuzzy inference system;therefore the step-size is still fixed for the NLMS algorithm but variable for the complete searching scheme. Simulation experimental results show that a useful approximation of the optimal step-size can be obtained for different conditions of signal-to-noise plus interference ratios (SINR) and the minimization of the mean square error for the adaptive beamforming algorithm is also achieved.

关键词： Adaptive linear array Communication systems Fuzzy inference systems Normalized least mean square (NLMS) algorithm Smart antennas

来源：评论

学校读者我要写书评

暂无评论

Loading Dependent Electrical Properties of Hybrid Perovskite Composite Media

Loading Dependent Electrical Properties of Hybrid Perovskite...

引用

MRS Advances

作者： Murphy, John P. Andriolo, Jessica M. Sutton, Nathan J. Wyss, Gary Skinner, Jack L. Montana Tech Nanotechology Laboratory 1300 W. Park Street ButteMT59701 United States Materials Science PhD Program Montana State University System United States Individual Interdisiplinary PhD Program University of Montana 32 Campus Drive MissoulaMT59812 United States Mechanical Engineering Department Montana Tech 1300 W. Park Street ButteMT59701 United States Center for Advanced Mineral and Metallurgical Processing Montana Tech ButteMT59701 United States

Hybrid organic-inorganic perovskites (HOIPs) have been previously compounded with hydrophobic polymers in order to improve the resilience of HOIPs in humid environments. In this study HOIP particles were synthesized and dispersed into a polymer solution. The weight loading of the HOIP phase in the composite was increased until an abrupt change in the electrical conduction was observed indicating a percolation threshold was approached. Additionally, the CH3NH3PbI3/ polystyrene composite media was characterized to assess morphology and the effect it has on the observed electrical properties. Copyright © Materials Research Society 2017.

关键词： Perovskite

来源：评论

学校读者我要写书评

暂无评论

Performance Evaluation of OSNR Sensitivity in DWDM-ROADM System for Data Center Interconnection

Performance Evaluation of OSNR Sensitivity in DWDM-ROADM Sys...

引用

IEEE International Conference on Communication, Networks and Satellite (ComNetSat)

作者： Nomarhinta Solihah Erna Sri Sugesti School of Electrical Engineering Telkom University Digital Connectivity Servcie Telkom Indonesia Bandung Indonesia PhD Program of Electrical Engineering School of Electrical Engineering Telkom University Bandung Indonesia

ISBN: (数字)9798350368086

ISBN: (纸本)9798350368093

The growing demand for handling sensitive data and high-bandwidth applications has made Data Center Interconnection (DCI) very important, as it provides high-bandwidth connectivity to improve efficiency. To address the increasing need for reliable, high-performance data transport, experts are evaluating the performance of Dense Wavelength Division Multiplexing (DWDM) integrated with Reconfigurable Optical Add-Drop Multiplexers (ROADM) system. Therefore, this study aimed to determine the optimal Optical Signal-to-Noise Ratio (OSNR) required for DWDM-ROADM system to transmit a 400 $\mathrm{Gb} / \mathrm{s}$ client interface operating at an $800 \mathrm{~Gb} / \mathrm{s}$ line-side rate. System configuration used a channel spacing of 150 GHz at a wavelength of $\mathbf{1 9 3. 1 5 0} \mathbf{~ T H z}$. Furthermore, OSNR performance evaluation was carried out by analyzing noise levels from Variable Optical Attenuator (VOA) and pre-Forward Error Correction (pre-FEC) setting. The results showed that DWDM-ROADM system required OSNR sensitivity value of $\mathbf{2 3. 1 5} \mathbf{d B}$ to ensure reliable $400 \mathrm{~Gb} / \mathrm{s}$ traffic transmission. This value was achieved at pre-FEC bit error rate (BER) of 0.02 and VOA attenuation of 8 dB, while capable of transmitting $400 \mathrm{~Gb} / \mathrm{s}$ of traffic. System performance was more stable at VOA level of 8 dB compared to 6 dB, where the traffic experiences errors at BER $1.63 \times 10^{-11}$. Finally, this study proposed a new test methodology for determining the minimum OSNR required for DWDM-ROADM system to reliably transmit $400 \mathrm{~Gb} / \mathrm{s}$ of traffic.

关键词： Performance evaluation Data centers Sensitivity Bit error rate Optical attenuators Wavelength division multiplexing Optical noise Reliability Monitoring Signal to noise ratio

来源：评论

学校读者我要写书评

暂无评论

Direct detection of adenovirus in environmental waste waters by portable optical fiber sensor platform

Direct detection of adenovirus in environmental waste waters...

引用

12th IEEE SENSORS 2013 Conference

作者： Yildirim, Nimet Li, Dan Long, Feng Gu, April Z. Bioengineering PhD Program Northeastern University Boston United States Department of Civil and Environmental Engineering Northeastern University Boston United States State Key Joint Laboratory of Environment Simulation and Pollution Control Environmental Science and Engineering Tsinghua University Beijing China Department of Environment Science and Engineering Tsinghua University Beijing China 360 Huntington Ave. Boston MA 02115 United States

ISBN: (纸本)9781467346405

Reusable and portable evanescent wave biosensor for rapid, sensitive and highly selective direct detection of adenoviruses was developed. Here, specific antibody for the hexon protein of the virus was used as a recognition element. Linear detection range was determined from 100PFU/ml to 2000PFU/ml. This direct detection system can be regenerated successfully with over 5 times without significant deterioration of the sensor performance. The developed biosensor system has high specificity towards adenovirus, and it was applied to environmental waste water samples for the detection of adenovirus with 95 to 117% recovery and 1.1 to 8.1% cv values (n=2). © 2013 IEEE.

关键词： Optical fibers

来源：评论

学校读者我要写书评

暂无评论

The ocular surface during spaceflight: Post-mission symptom report, extraterrestrial risks, and in-flight therapeutics

引用

Life Sciences in Space Research 2025年 46卷 169-186页

作者： Ong, Joshua Mader, Thomas Gibson, Charles Robert Suh, Alex Panzo, Nicholas Memon, Hamza Lee, Ryung Soares, Benjamin Waisberg, Ethan Sampige, Ritu Nguyen, Tuan Kadipasaoglu, Cihan Guo, Yannie Vineyard, Kelsey Masalkhi, Mouayad Osteicoechea, Daniela Vizzeri, Gianmarco Chévez-Barrios, Patricia Berdahl, John Barker, Donald C. Schmitt, Harrison H. Lee, Andrew G. Department of Ophthalmology and Visual Sciences University of Michigan Kellogg Eye Center Ann Arbor United States NASA Ophthalmology Consultant Moab UT United States KBR NASA Johnson Space Center Houston TX United States Tulane School of Medicine New Orleans LA United States Texas A&M School of Engineering Medicine Bryan TX United States Touro College of Osteopathic Medicine New York NY United States Boston University Chobanian & Avedisian School of Medicine Boston MA United States Department of Clinical Neurosciences University of Cambridge Cambridge United Kingdom Department of Ophthalmology Baylor College of Medicine Houston TX United States Weill Cornell/Rockefeller/Sloan-Kettering Tri-Institutional MD-PhD Program New York City NY United States Department of Neurology Houston Methodist Hospital Houston TX United States Edward Via College of Osteopathic Medicine Spartanburg SC United States University College Dublin School of Medicine Dublin Belfield Ireland Department of Ophthalmology University of Texas Medical Branch Galveston TX United States Department of Ophthalmology Blanton Eye Institute Houston Methodist Hospital Houston TX United States The Houston Methodist Research Institute Houston Methodist Hospital Houston TX United States University of Texas MD Anderson Cancer Center Houston TX United States Vance Thompson Vision Sioux Falls SD United States MAXD Inc Houston TX United States Interlune Corporation Seattle WA United States Center for Space Medicine Baylor College of Medicine Houston TX United States Departments of Ophthalmology Neurology and Neurosurgery Weill Cornell Medicine New York NY United States Department of Ophthalmology The University of Iowa Hospitals and Clinics Iowa City IA United States

Ocular health is critical for overall astronaut health requirements given its essential role for mission performance and safety. The ocular surface is a vital structure to the visual system and is essential for ocular protection and the refraction of light for focused vision. Data from the 2024 NASA Lifetime Surveillance of Astronaut Health identified that Space Shuttle and International Space Station (ISS) astronauts (N = 257) queried during post-flight eye exams reported symptoms of eye irritation (34 %), dry eyes (14 %), and foreign body sensation (21 %). Given these findings, it is critical to understand the risks that the ocular surface faces in the spaceflight environment. This manuscript explores the impact of lunar dust, space radiation, lunar gravity, and microgravity on the astronaut ocular surface. Furthermore, we outline ongoing efforts to minimize associated health risks given our insights into the vision standards, testing procedures, corrective measures, and mitigations designed for the lunar surface and microgravity environments. We further discuss the ophthalmic medications available on space missions to address threats to the ocular surface. We also report personal insights from Dr. Harrison Schmitt, NASA astronaut and Apollo 17 moonwalker, on his experience in space and lunar dust human physiological interactions. Additionally, given the known physiologic changes in microgravity and expectations for partial gravity environments, our review prompted characterization of accelerated aging and gut microbiome on the development of dry eye. We also discuss the potential expansion of ophthalmic imaging capabilities during spaceflight missions and its utility. Addressing these factors is critical to uphold astronauts' ocular health and to ensure the safety of future space missions. © 2025 The Committee on Space Research (COSPAR)

关键词： Lunar dust Microgravity Ocular surface Radiation Space medicine

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：