检索结果-内蒙古大学图书馆

A device simulation of the BBT effect in flash memory cells and implications for the development of high-reliability memory cells

引用

ELECTRONICS AND COMMUNICATIONS IN JAPAN PART II-ELECTRONICS 1996年第11期79卷 51-57页

作者： Hayashi, T Fukuda, K Ohno, M Nishi, K Kita, A VLSI R&D Center OKI Electric Industry Company Ltd. Hachioji-shi Japan 193 Graduated from the Science University of Tokyo Dept. of Applied Physics in 1986 and joined Oki Electric. Since then he has been engaged in research on the reliability of MOS transistors and silicon oxide films. Since 1994 he has been engaged in the development of flash memory. He is a member of the Applied Physics Society. Graduated from the University of Tokyo Dept. of Applied Physics in 1983 and joined Oki Electric in 1985. Since then he has been engaged in research on the semiconductor process and device simulation. In 1990 he participated in joint research at the Technical University of Aachen. He is a member of the Applied Physics Society. Graduated from the Tokyo University of Agriculture and Technology Dept. of Electrical Engineering in 1980 and completed an MS course in 1983. In 1986 he completed the doctoral course at Shizuoka University. He then joined Oki Electric where he has been engaged in research on ULSI processes. He is now a manager responsible for flash memory at the VLSI R&D Center. He holds a doctorate in engineering. He is a member of the Applied Physics Society. Graduated from the University of Tokyo Dept. of Applied Physics in 1973 and joined Oki Electric. He was engaged in the development of integrated circuit logic simulation technology and bipolar process technology and since 1980 he has been engaged in research on process/device simulation and modeling. Presently he is a senior manager at the VLSI R&D Center. In 1982–1984 he was a Visiting Scholar at MIT. He holds a doctorate in engineering. He is a member of the Applied Physics Society and a senior member of IEEE. Graduated from Tokyo Institute of Technology Dept. of Chemical Engineering in 1978 and completed the MS program in 1930. In that year he joined Oki Electric. Since then he has been engaged in CMOS process design for DRAM and flash memory. He is now a manager at the VLSI R&D Center. He is a member of the Applied Physics Society.

In order to analyze the BBT (band-to-band tunneling) phenomenon in flash memory cells by simulation, a new model is proposed, which improves on the BBT model by introducing the concept of ''average electric field.'' This model agrees well with the measured results in a wide drain N-concentration range. Using this model, the reliability of memory cells is analyzed. It is found that the difference of the amount of BBT generation does not directly affect the endurance characteristics but does affect the disturb characteristics. The same model can be used to analyze problem points of the present cells and to estimate the BBT current of next-generation devices accurately.

关键词： band-to-band tunneling flash memory simulation endurance characteristics

来源：评论

学校读者我要写书评

暂无评论

Optimization of hybrid PVA/hFDM scaffold preparation

引用

AIP Conference Proceedings 2021年第1期2344卷

作者： Rizqa Inayati Muhammad Suhaeri Nuzli Fahdia Melinda Remelia Radiana Dhewayani Antarianto 1Master Program in Biomedical Science Faculty of Medicine Universitas Indonesia Jl. Salemba Raya No. 6 Central Jakarta DKI Jakarta 10430 Indonesia 2Rumah Sakit Universitas Indonesia Kampus Universitas Indonesia Depok West Java 16424 Indonesia 3Stem cell and Tissue Engineering Research Cluster Indonesian Medical Education and Research Institute (IMERI) Universitas Indonesia Salemba Raya Jakarta West Java 10430 Indonesia 4Doctoral Program in Biomedical Science Faculty of Medicine Universitas Indonesia Jl. Salemba Raya No. 6 Central Jakarta DKI Jakarta 10430 Indonesia 5Department of Basic Biomedicine Faculty of Medicine Universitas Kristen Indonesia Jl Mayjen Sutoyo No 2 DKI Jakarta 13630 Indonesia 6Department of Histology Faculty of Medicine Universitas Indonesia Jl. Salemba Raya No. 6 Central Jakarta DKI Jakarta 10430 Indonesia

Osteogenic differentiation from Mesenchymal Stem Cell (MSC) to osteoblast has a clinical significance which is very important for treating bone injuries, in the form of femoral fractures with the most cases in Indonesia. Various studies have been conducted to find the best scaffold that can improve osteogenic differentiation, one of which is the development of a hybrid scaffold made from natural biomaterials in the form of the extracellular matrix, and from synthetic biomaterials. The discovery of the best scaffold is not only focused on the source of the scaffold but also requires optimization of the method in making the scaffold. Therefore, the aim of this study is to find out the optimum method for making hybrid scaffolds that support osteogenic differentiation from MSC. Materials and methods: human Fibroblast-derived Matrix (hFDM) as a hybrid scaffold material collected from decellularized fibroblasts cultures from post-cleft-surgery reconstruction palatal skin. Fibroblast cell cultures were divided into two groups of cultures, cultures without Platelet Rich Plasma (PRP), and cultures with the addition of PRP. For decellularization, we performed optimization at the preparation stage of the decellularization solution, and the time of culture for decellularization. In the preparation of the decellularization solution, we divided it into two groups, NH4OH as material from the decellularization solution was diluted with PBS before mixing with 0.25% Triton X-100, and NH4OH was diluted directly in 0.25% Triton X-100. In optimizing the culture time for decellularization, we divided it into three groups, decellularization on the day when cell growth reached 100% confluent, decellularization on the 3rd day after 100% confluent (H + 3) cells, and decellularization on the 4th day after 100% confluent (H + 4) cells. Next, the hFDM matrix is collected and added Polyvinyl Alcohol (PVA) solutions to form a hybrid PVA / hFDM scaffold in the form of a hydrogel. Observations on h

关键词：

来源：评论

学校读者我要写书评

暂无评论

Filtration performance of polyethersulfone (PES) composite membrane incorporated with organic and inorganic additives

引用

IOP Conference Series: Materials Science and engineering 2021年第1期1087卷

作者： A Fathurrahman R Arisandi A Fahrina N Arahman F Razi Department of Chemical Engineering Universitas Syiah Kuala Jl. Syeh A. Rauf No. 7. Banda Aceh 23111 Indonesia Doctoral Program School of Engineering Universitas Syiah Kuala Jl. Syeh A. Rauf No. 7. Banda Aceh 23111 Indonesia Graduate School of Environmental Management Universitas Syiah Kuala Jl. Tgk Chik Pante Kulu No. 5 Banda Aceh 23111 Indonesia Research Center for Environmental and Natural Resources Universitas Syiah Kuala Jl. Hamzah Fansuri No. 4 Darussalam Banda Aceh 23111 Indonesia Atsiri Research Center Universitas Syiah Kuala Jl. Syeh A. Rauf No. 7. Banda Aceh 23111 Indonesia

Membrane separation technology has been extensively applied in separation processes. Improving membrane hydrophilicity plays a significant role in mitigating fouling phenomena and maintain membrane filtration performance. Fouling is a pore blockage of the membrane due to the interaction between hydrophobic molecules and membrane surface that cause membrane flux declining, shorter membranedurability, and increasing energy consumption. Incorporating inorganic particles to enhance membrane hydrophilicity is very attractive nowadays. Inorganic particles have unique characters due to their small size, excellent mechanical properties, and hydrophilic nature. This research aims to improve PES membrane filtration performances by employing nanocarbon and Fe2O3 as an inorganic additive. The membrane manufacturing process was carried out using a phaseinversionmethod., especially non-solvent induced phase separation (NIPS). The resulted membranes were analyzed by filtration soy protein solution to evaluate protein permeation flux and flux recovery ratio (FRR). The result experiments showed that PES/Nanocarbon could provide the highest FRR of up to 76.46%.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Self-Awareness for Autonomous Systems

引用

PROCEEDINGS OF THE IEEE 2020年第7期108卷 971-975页

作者： Dutt, Nikil Regazzoni, Carlo S. Rinner, Bernhard Yao, Xin Nikil Dutt (Fellow IEEE) received the Ph.D. degree from the University of Illinois at Urbana–Champaign Champaign IL USA in 1989.""He is currently a Distinguished Professor of computer science (CS) cognitive sciences and electrical engineering and computer sciences (EECS) with the University of California at Irvine Irvine CA USA. He is a coauthor of seven books. His research interests include embedded systems electronic design automation (EDA) computer architecture distributed systems healthcare Internet of Things (IoT) and brain-inspired architectures and computing.""Dr. Dutt is a Fellow of ACM. He was a recipient of the IFIP Silver Core Award. He has received numerous best paper awards. He serves as the Steering Committee Chair of the IEEE/ACM Embedded Systems Week (ESWEEK). He is also on the steering organizing and program committees of several premier EDA and embedded system design conferences and workshops. He has served on the Editorial Boards for the IEEE Transactions on Very Large Scale Integration (VLSI) Systems and the ACM Transactions on Embedded Computing Systems and also previously served as the Editor-in-Chief (EiC) for the ACM Transactions on Design Automation of Electronic Systems. He served on the Advisory Boards of the IEEE Embedded Systems Letters the ACM Special Interest Group on Embedded Systems the ACM Special Interest Group on Design Automationt and the ACM Transactions on Embedded Computing Systems. Carlo S. Regazzoni (Senior Member IEEE) received the M.S. and Ph.D. degrees in electronic and telecommunications engineering from the University of Genoa Genoa Italy in 1987 and 1992 respectively.""He is currently a Full Professor of cognitive telecommunications systems with the Department of Electrical Electronics and Telecommunication Engineering and Naval Architecture (DITEN) University of Genoa and a Co-Ordinator of the Joint Doctorate on Interactive and Cognitive Environments (JDICE) international Ph.D. course started initially as EU Erasmus Mundus Project and

Autonomous systems are able to make decisions and potentially take actions without direct human intervention, which requires some knowledge about the system and its environment as well as goal-oriented reasoning. In computer systems, one can derive such behavior from the concept of a rational agent with autonomy (“control over its own actions”), reactivity (“react to events from the environment”), proactivity (“act on its own initiative”), and sociality (“interact with other agents”) as fundamental properties \n[1]\n. Autonomous systems will undoubtedly pervade into our everyday lives, and we will find them in a variety of domains and applications including robotics, transportation, health care, communications, and entertainment to name a few. \nThe articles in this month’s special issue cover concepts and fundamentals, architectures and techniques, and applications and case studies in the exciting area of self-awareness in autonomous systems.

关键词： Special issues and sections Autonomous systems Self-aware Robot sensing systems Computational modeling

来源：评论

学校读者我要写书评

暂无评论

Fungal diversity notes 1151-1276:taxonomic and phylogenetic contributions on genera and species of fungal taxa

引用

Fungal Diversity 2020年第1期100卷 5-277页

作者： Kevin DHyde Yang Dong Rungtiwa Phookamsak Rajesh Jeewon DJayarama Bhat EBGareth Jones Ning‑Guo Liu Pranami DAbeywickrama Ausana Mapook Deping Wei Rekhani HPerera Ishara SManawasinghe Dhandevi Pem Digvijayini Bundhun Anuruddha Karunarathna Anusha HEkanayaka Dan‑Feng Bao Junfu Li Milan CSamarakoon Napalai Chaiwan Chuan‑Gen Lin Kunthida Phutthacharoen Sheng‑Nan Zhang Indunil CSenanayake Ishani DGoonasekara Kasun MThambugala Chayanard Phukhamsakda Danushka STennakoon Hong‑Bo Jiang Jing Yang Ming Zeng Naruemon Huanraluek Jian‑Kui(Jack)Liu Subodini NWijesinghe Qing Tian Saowaluck Tibpromma Rashika SBrahmanage Saranyaphat Boonmee Shi‑Ke Huang Vinodhini Thiyagaraja Yong‑Zhong Lu Ruvishika SJayawardena Wei Dong Er‑Fu Yang Sanjay KSingh Shiv Mohan Singh Shiwali Rana Sneha SLad Garima Anand Bandarupalli Devadatha MNiranjan VVenkateswara Sarma Kare Liimatainen 馻‑ Tuula Niskanen Andy Overall Renato Lúcio Mendes Alvarenga Tatiana Baptista Gibertoni Walter PPfliegler EnikőHorváth Alexandra Imre Amanda Lucia Alves Ana Carla da Silva Santos Patricia Vieira Tiago Timur SBulgakov Dhanushaka NWanasinghe Ali HBahkali Mingkwan Doilom Abdallah MElgorban Sajeewa SNMaharachchikumbura Kunhiraman CRajeshkumar Danny Haelewaters Peter EMortimer Qi Zhao Saisamorn Lumyong Jianchu Xu Jun Sheng Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201YunnanChina State Key Laboratory for Conservation and Utilization of Bio‑Resources in Yunnan Yunnan Agricultural UniversityKunming 650201China Yunnan Research Institute for Local Plateau Agriculture and Industry Kunming 650201China Key Laboratory for Agro‑biodiversity and Pest Control of Ministry of Education Yunnan Agricultural UniversityKunming 650201China Center of Excellence in Fungal Research Mae Fah Luang UniversityChiang Rai 57100Thailand East and Central Asia Regional Office World Agroforestry Centre(ICRAF)Kunming 650201YunnanChina Centre for Mountain Futures(CMF) Kunming Institute of BotanyKunming 650201YunnanChina Mushroom Research Foundation 128 M.3 Ban Pa Deng T.Pa PaeA.Mae TaengChiang Mai 50150Thailand Department of Health Sciences Faculty of ScienceUniversity of MauritiusReduitMauritius No.128/1‑J Azad Co‑Op Housing SocietyCurcaGoa Velha 403108India Department of Entomology and Plant Pathology Faculty of AgricultureChiang Mai UniversityChiang Mai 50200Thailand Department of Botany and Microbiology College of ScienceKing Saud UniversityP.O.Box 2455Riyadh 11451Kingdom of Saudi Arabia School of Science Mae Fah Luang UniversityChiang Rai 57100Thailand Faculty of Agriculture National Resources and EnvironmentNaresuan UniversityPhitsanulok 65000Thailand Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North China Institute of Plant and Environment ProtectionBeijing Academy of Agriculture and Forestry SciencesBeijing 100097China Department of Soil Ecology UFZ-Helmholtz Centre for Environmental ResearchHalleGermany Guizhou Key Laboratory of Agricultural Biotechnology Guizhou Academy of Agricultural SciencesGuiyang 550006GuizhouChina Shenzhen Key Laboratory of Microbial Genetic Engineering College of Life Sciences and OceanographyShenzhen UniversityShenzhen 518060China Department of Plant M

Fungal diversity notes is one of the important journal series of fungal taxonomy that provide detailed descriptions and illustrations of new fungal taxa,as well as providing new information of fungal taxa *** article is the 11th contribution to the fungal diversity notes series,in which 126 taxa distributed in two phyla,six classes,24 orders and 55 families are described and *** in this study were mainly collected from Italy by Erio Camporesi and also collected from China,India and Thailand,as well as in some other European,North American and South American *** described in the present study include two new families,12 new genera,82 new species,five new combinations and 25 new records on new hosts and new geographical distributions as well as sexual-asexual *** two new families are Eriomycetaceae(Dothideomycetes,family incertae sedis)and Fasciatisporaceae(Xylariales,Sordariomycetes).The twelve new genera comprise Bhagirathimyces(Phaeosphaeriaceae),Camporesiomyces(Tubeufiaceae),Eriocamporesia(Cryphonectriaceae),Eriomyces(Eriomycetaceae),Neomonodictys(Pleurotheciaceae),Paraloratospora(Phaeosphaeriaceae),Paramonodictys(Parabambusicolaceae),Pseudoconlarium(Diaporthomycetidae,genus incertae sedis),Pseudomurilentithecium(Lentitheciaceae),Setoapiospora(Muyocopronaceae),Srinivasanomyces(Vibrisseaceae)and Xenoanthostomella(Xylariales,genera incertae sedis).The 82 new species comprise Acremonium chiangraiense,Adustochaete nivea,Angustimassarina camporesii,Bhagirathimyces himalayensis,Brunneoclavispora camporesii,Camarosporidiella camporesii,Camporesiomyces mali,Camposporium appendiculatum,Camposporium multiseptatum,Camposporium septatum,Canalisporium aquaticium,Clonostachys eriocamporesiana,Clonostachys eriocamporesii,Colletotrichum hederiicola,Coniochaeta vineae,Conioscypha verrucosa,Cortinarius ainsworthii,Cortinarius aurae,Cortinarius britannicus,Cortinarius heatherae,Cortinarius scoticus,Cortinarius subsaniosus,Cytospora fusispor

关键词： 96 new taxa Agaricomycetes Ascomycota Basidiomycota Dothideomycetes Lecanoromycetes Leotiomycetes Pezizomycetes Phylogeny Saccharomycetes Taxonomy

来源：评论

学校读者我要写书评

暂无评论

Correction to: Use of meat resources in the Early Pleistocene assemblages from Fuente Nueva 3 (Orce, Granada, Spain)

引用

Archaeological and Anthropological Sciences 2022年第5期14卷 1-1页

作者： Yravedra, José Solano, José Antonio Courtenay, Lloyd A. Saarinen, Juha Linares‑Matás, Gonzalo Luzón, Carmen Serrano‑Ramos, Alexia Herranz‑Rodrigo, Darío Cámara, José Miguel Ruiz, Auxiliadora Titton, Stefania Rodríguez‑Alba, Juan José Mielgo, Clara Blain, Hugues‑Alexandre Agustí, Jordi Sánchez‑Bandera, Christian Montilla, Eva Toro‑Moyano, Isidro Fortelius, Mikael Oms, Oriol Barsky, Deborah Jiménez‑Arenas, Juan Manuel Department of Prehistory Ancient History and Archaeology Complutense University of Madrid Madrid Spain C.A.I. Archaeometry and Archaeological Analysis Complutense University Madrid Spain Department of Prehistory and Archaeology University of Sevilla Seville Spain Department of Cartographic and Land Engineering Higher Polytechnic School of Avila University of Salamanca Avila Spain Department of Geosciences and Geography University of Helsinki Helsinki Finland School of Archaeology St. Hugh’s College University of Oxford Oxford UK History and Arts Doctoral Program University of Granada Granada Spain GEOREC Master Program University of Granada Granada Spain Department d’Historia i Historia de l’Art Universitat Rovira I Virgili (URV) Tarragona Spain Institut Català de Paleoecologia Humana I Evolució Social Tarragona Spain Institució Catalana de Recerca I Estudis Avançats (ICREA) Barcelona Spain Museum of the First Settlers of Europe “Josep Gibert” Granada Spain Archaeological and Ethnological Museum of Granada Granada Spain Department of Geology Unitat d’Estratigrafia University of Barcelona Barcelona Spain Department of Prehistory and Archaeology University of Granada Granada Spain Institute of Peace and Conflict Research University of Granada Granada Spain

来源：评论

学校读者我要写书评

暂无评论

ADVANCED CONCEPTS IN CHEMICAL PROPULSION SYSTEMS FOR A 500-TON SUBMERSIBLE

引用

NAVAL ENGINEERS JOURNAL 1981年第1期93卷 63-75页

作者： URBACH, HB KNAUSS, DT QUANDT, ER Dr. Herman B. Urbach:received his B.A. degree in Chemistry from Indiana University in 1948 his M.A. degree in Physical Chemistry from Columbia University in 1950 his Ph.D. degree in Physical Chemistry from Case-Western Reserve University in 1953 and his M.S. degree in Mechanical Engineering from The George Washington University in 1976. After receiving his doctorate he was employed by Olin Mathieson Corporation Niagara Falls N. Y. as a Group Leader and Research Chemist on rocket fuels borane chemistry and the reactions of oxygen atoms with ozone. In 1959 he joined the United Technology Research Laboratories East Hartford Conn. as a Senior Research Scientist working in the area of fuel cells and electrochemistry. Presently he is a Scientific Staff Assistant in the Power Systems Division David W. Taylor Naval Ship Research and Development Center where since 1965 he has performed research and development studies on fuel cells gas turbines biphase turbines and MHD systems. Additionally Dr. Urbach was a Consultant to the Artificial Heart Program of the National Heart and Lung Institute NIH and presently is a member of the New York Academy of Science Sigma Xi American Chemical Society Electrochemical Society American Institute of Aeronautics and Astronautics and the American Society of Mechanical Engineers. Dr. Donald T. Knauss:received his B.S. degree in Mechanical Engineering from Duke University in 1956 at which time he took employment with the NASA Lewis Research Center Cleveland Ohio. Here he was involved with aircraft propulsion innovations until his entry into military service with the U.S. Air Force. After completing work toward his M.S.M.E. degree at Purdue University in 1962 he was employed by Battelle Memorial Institute Columbia Ohio where he was involved in a variety of projects related to Fluid and Thermal Mechanics. He was later employed by the Ballistic Research Laboratories Aberdeen Proving Ground Md. where he contributed to studies of the physical gas dynamics of hypers

Alternative advanced power systems designed to operate a 500-ton submersible have been examined with respect to overall weight and volume fractions. Two-week and one-month missions, with and without the conventional “at-sea” recharge capability, were considered to evaluate the impact of advanced technologies on non-nuclear submarine design. Candidate air-breathing, primary-power systems studied included Diesel, Closed-Brayton Cycle (CBC), and fuel cells. A number of options for underwater operation were based upon high-energy reactants replenlshable from Base supplies. Another set of options was considered based upon using JP-S fuel with “at-sea” rechargeable secondary power systems, including thermal-energy storage, advanced lithium-sulfur batteries, or flywheels. Replenlshable high-energy reactant systems were, on average, lower in weight and volume than the rechargeable systems for the same submerged-mission profile. Moreover, the replenlshable systems permitted an extended tactical encounter with a maximum duration of 8 to 17 hours at speeds of 30 knots without the need to resurface and recharge a secondary energy storage device. The lowest-weight rechargeable systems in the order of increasing weight were the CBC engine with advanced lithium-sulfur battery, the CBC engine with carbon-block (thermal energy storage), and the Diesel engine with advanced lithium-sulfur battery. The rechargeable systems required unacceptable weight fractions in both missions. The high-energy (replenlshable from Base supplies) systems, with the exception of the heavy acid fuel cell using LOX, were all acceptable candidates for application in the two-week mission. Only the CBC engine with a llthium-sulfurhexaflaoride heat source, the lowest-weight system in both mission groups, was acceptable for the one-month mission.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Author Correction: Microbial community dynamics and coexistence in a sulfide-driven phototrophic bloom

引用

Environmental microbiome 2023年第1期18卷 27页

作者： Srijak Bhatnagar Elise S Cowley Sebastian H Kopf Sherlynette Pérez Castro Sean Kearney Scott C Dawson Kurt Hanselmann S Emil Ruff Faculty of Science and Technology Athabasca University Athabasca AB Canada. Department of Bacteriology University of Wisconsin-Madison Madison WI USA. Microbiology Doctoral Training Program University of Wisconsin-Madison Madison WI USA. Department of Geological Sciences University of Colorado Boulder CO USA. Ecosystems Center and J. Bay Paul Center for Comparative Molecular Biology and Evolution Marine Biological Laboratory Woods Hole MA USA. Department of Biological Engineering Massachusetts Institute of Technology Cambridge MA USA. Department of Microbiology and Molecular Genetics University of California Davis CA USA. Department of Earth Sciences ETH-Z Zurich Switzerland. Ecosystems Center and J. Bay Paul Center for Comparative Molecular Biology and Evolution Marine Biological Laboratory Woods Hole MA USA. eruff@mbl.edu.

来源：评论

学校读者我要写书评

暂无评论

HYBRID SATELLITE AND TERRESTRIAL NETWORKS

引用

INTERNATIONAL JOURNAL OF SATELLITE COMMUNICATIONS 1994年第3期12卷 313-327页

作者： CHITRE, DM SHYY, DJ EPHREMIDES, A GUPTA, S COMSAT Laboratories 22300 Comsat Drive Clarksburg MD 20871–9475 USA. Received his B.Sc. from the University of Bombay India an M.A. in mathematics from the University of Cambridge U.K. and a Ph.D. in physics from the University of Maryland. He is currently an Associate Executive Director of the Network Technology Division at COMSAT Laboratories. He has been involved in research and development activities in ISDN VSAT networks data communications and network systems and architectures. Prior to his current positions Dr. Chitre was a Principal Scientist in the Network Technology Division at COMSAT Laboratories. Dr. Chitre joined COMSAT Laboratories in 1980. He has made major contributions to the analysis and architecture of data communication ISDN and BISDN via satellite. Dr. Chitre directs and participates in the international and national standards activities in ISDN BISDN and data communication as they apply to satellite communication. He was Chairman of the Working Group on Protocols and Network Timing Function of the CCIR/CCITT Joint Ad Hoc Group on ISDN/Satellite Matters during 1990–1992. Currently he is the Chairman of the Working Group on New Technologies in the ITU Intersector Coordinating Group (ICG) on Satellite Matters. Dr. Chitre was a programme manager during 1990 and 1991 on a contract from INTELSAT on systems studies on satellite communications systems architectures for ISDN and broadband ISDN systems. Currently he is the technical manager of the DoD Contract on ATM via satellite demonstration and the programme manager for the INTELSAT contract on analysis and top-level specification of INTELSAT ISDN subnetworks and SDH compatible transport network. Received the B.S. degree in electrical engineering from national Chiao-Tung University Hsin-Chu Taiwan in 1983 and the M.S. and Ph.D. degrees in electrical engineering from Georgia Institute of Technology Atlanta GA in 1986 and 1990 respectively. From June 1987 to October 1987 he worked for the Department of Neurology Emory Univers

The role of satellite communications in networks that provide new services, such as frame relay and multimedia, is investigated. Both passive and active (on-board switching/processing) satellite systems are considered. Novel techniques are developed for each system to demonstrate, via detailed analysis and simulation, how the communications bandwidth agility of multipoint/broadcast satellite channels, and the on-board switching/processing, makes it feasible to provide these new services via hybrid satellite and terrestrial networks in a resource-efficient manner.

关键词： HYBRID NETWORKS ON-BOARD PROCESSING FRAME RELAY

来源：评论

学校读者我要写书评

暂无评论

Unveiling long COVID symptomatology, co-occurrence trends, and symptom distress post SARS-CoV-2 infection

引用

Journal of infection and public health 2024年第7期17卷 102464页

作者： Shikha Kukreti Chun-Yin Yeh Yi-Jhen Chen Meng-Ting Lu Ming-Chi Li Yi-Yin Lai Chung-Yi Li Nai-Ying Ko Department of Nursing College of Medicine National Cheng Kung University Tainan Taiwan Department of Public Health College of Medicine National Cheng Kung University Taiwan. Department of Computer Science and Information Engineering National Cheng Kung University Taiwan. Department of Internal Medicine National Cheng Kung University Hospital College of Medicine National Cheng Kung University Tainan Taiwan. Centre of Infection Control College of Medicine National Cheng Kung University and Hospital Tainan Taiwan. Department of Public Health College of Medicine National Cheng Kung University Taiwan Department of Public Health College of Public Health China Medical University Taichung Department of Healthcare Administration College of Medical and Health Science Asia University Taichung Taiwan. International Doctoral Program in Nursing Department of Nursing College of Medicine National Cheng Kung University Tainan Taiwan. Electronic address: nyko@mail.ncku.edu.tw.

BACKGROUND:Long COVID, an emerging public health issue, is characterized by persistent symptoms following SARS-CoV-2 infection. This study aims to explore the relationship between post-COVID-19 symptomatology and patient distress employing Latent Class Analysis to uncover symptom co-occurrence patterns and their association with distress. METHODS:A cross-sectional study was conducted using an online survey among 240 participants from a university and affiliated hospital of southern Taiwan. The survey quantified distress due to persistent symptoms and assessed the prevalence of Long COVID, symptom co-occurrence, and latent symptom classes. Latent Class Analysis (LCA) identified distinct symptom patterns, and multiple regression models evaluated associations between symptom patterns, distress, and demographic factors. RESULTS:The study found that 80 % of participants experienced Long COVID, with symptoms persisting for over three months. Individuals with multiple COVID-19 infections showed a significant increase in general (β = 1.79), cardiovascular (β = 0.61), and neuropsychological symptoms (β = 2.18), and higher total distress scores (β = 6.35). Three distinct symptomatology classes were identified: "Diverse", "Mild", and "Severe" symptomatology. The "Mild Symptomatology" class was associated with lower distress (-10.61), while the "Severe Symptomatology" class showed a significantly higher distress due to symptoms (13.32). CONCLUSION:The study highlights the significant impact of Long COVID on individuals, with distinct patterns of symptomatology and associated distress. It emphasizes the cumulative effect of multiple COVID-19 infections on symptom severity and the importance of tailored care strategies.

关键词： Co-occurrence Distress Latent class Long COVID

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：