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Mutual Authentication protocols for RFID Systems

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International Journal of Automation and computing 2008年第4期5卷 348-365页

作者： Ashrar A.Omer Johnson p.thomas Department of Computer Science Oklahoma State University

With the availability of low-cost radio frequency identification (RFID) tags,security becomes an increasing concern. However,such tags do not permit complex cryptographic functions due to their computational,communications,and storage limitations. In this paper,we investigate the security issues and requirements of RFID systems,and propose ultra-light weight and light weight protocols for low-cost RFID *** proposed protocols has been applied to a supply chain management system.

关键词： Security mutual authentication supply chain management RFID Systems.

Management of severe spasticity with and without dystonia with intrathecal baclofen in the pediatric population:a cross-sectional study

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World Journal of pediatric Surgery 2022年第3期5卷 119-124页

作者： Joslyn Gober Michelle Seymour Hongyu Miao Daniel J.Curry Sruthi p.thomas Department of physical Medicine and Rehabilitation University of Miami Miller School of MedicineMiamiFloridaUSA Department of physical Medicine and Rehabilitation Baylor College of MedicineHoustonTexasUSA Department of Biostatistics and Data Science The University of Texas Health Science Center at HoustonHoustonTexasUSA Department of Neurosurgery Baylor College of MedicineHoustonTexasUSA

Objective To investigate the differences in delivery mode,daily dose,and catheter tip location in pediatric patients using intrathecal baclofen(ITB)pumps with spasticity plus dystonia versus spasticity *** A single-center,cross-sectional study was performed by collecting retrospective data from electronic medical *** and diagnostic information was obtained,comparing patients with spasticity with or without *** data were analyzed for group differences using a two-tailed Student’s *** data were analyzed for group differences using pearson’s χ^(2) *** A total of 137 patients met the *** majority(114)had spasticity plus dystonia whereas only 23 were documented as spasticity *** continuous dosing was the most common delivery mode,but flex dosing was used more than twice as frequently with spasticity plus dystonia compared with spasticity alone(42%vs 17%).patients with spasticity plus dystonia also had more rostral catheter tip *** While it has been discussed anecdotally,this study confirms the supposition that patients with spasticity plus dystonia have increased dose requirements when compared with those with spasticity *** there are no clear standards of care when managing these patients,they are often on higher daily dosages,are more likely to require flexed dosing method,and have higher catheter ***,there are few studies that demonstrate improvements in dystonia with the use of *** general,these patients would benefit from the development of universal standardizations as well as the confirmation that this is an appropriate treatment.

关键词： dosage alone sectional

Effect of Sr_(2) TiMnO_(6) fillers on mechanical, dielectric and thermal behaviour of pMMA polymer

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Journal of Advanced Dielectrics 2015年第3期5卷 1-11页

作者： p.thomas B.S.Dakshayini H.S.Kushwaha Rahul Vaish Dielectric Materials Division Central Power Research Institute BangaloreKarnataka 560080India Aerospace Engineering Indian Institute of Science BangaloreKarnataka 560012India School of Engineering Indian Institute of Technology Mandi Himachal Pradesh 175001India

Composites of poly(methyl methacrylate)(pMMA)and Sr_(2) TiMnO_(6)(STMO)were fabricated via melt mixing followed by hot pressing *** were characterized using X-ray diffraction(XRD),thermo gravimetric analysis(TGA),differential scanning calorimetry(DSC),thermo mechanical analysis(TMA)and impedance analyser for their structural,thermal and dielectric *** coefficient of thermal expansion(CTE)was measured between 40℃ and 100℃ for pure pMMA is 115.2ppm/℃,which was decreased to 78.58ppm/℃ when the STMO content was increased to 50 wt.%in *** was no difference in the glass transition(T g)temperature of the pMMA polymer and their ***,the FTIR analysis indicated possible interaction between the pMMA and *** density and the hardness were increased as the STMO content increased in the pMMA *** was found to be as high as 30.9 at 100Hz for the pMMAþSTMO-50 wt.%composites,indicating the possibility of using these materials for capacitor *** thermal stability of polymer was enhanced by incorporation of STMO fillers.

关键词： polymer composite dielectric properties mechanical properties thermal properties

pulmonary vein activation in atrial fibrillation and sinus rhythm

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Pulmonary vein activation in atrial fibrillation and sinus r...

Effect of TeO_(2) addition on the dielectric properties of CaCu_(3)Ti_(4)O_(12) ceramics derived from the oxalate precursor route

2006年浙江省心血管病学学术年会

作者： Stuart p.thomas Department of Cardiology and University of Sydney Westmead HospitalSydneyN.S.W2145Australia M.D. Ph.D.

AIMS The purpose of this study was to determine the relationship between pulmonary vein (pV) electrical activation during atrial fibrillation (AF) and after cardioversion into sinus rhythm. Methods and Results Electrograms were recorded using a circular mapping catheter during AF and after cardioversion in 53 pVs from 41 patients. Two activation patterns were observed in atrial fibrillation. Group 1 had fixed consistent uniform activation sequences most (>70%) of the recording time. Group 2 had no fixed activation sequence. In Group 1 a constant single activation sequence pattern was seen in 22 pVs (Group

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Journal of Advanced Dielectrics 2013年第4期3卷 26-33页

作者： p.thomas K.B.R.Varma Dielectric Materials Division Central Power Research Institute Bangalore 560080India Materials Research Centre Indian Institute of Science Bangalore 560012India

CaCu_(3)Ti_(4)O_(12)(CCTO)ceramics which has perovskite structure gained considerable attention due to its giant *** it has high tan(0.1 at 1 kHz)at room temperature,which needs to be minimized to the level of practical ***,TeO_(2) which is a good glass former has been deliberately added to CCTO nanoceramic(derived from the oxalate precursor route)to explore the possibility of reducing the dielectric loss while maintaining the high *** structural,morphological and dielectric properties of the pure CCTO and TeO_(2) added ceramics were studied using X-ray diffraction,Scanning Electron Microscope along with Energy Dispersive X-ray Analysis(EDX),spectroscopy and Impedance *** the 2.0 wt.%TeO_(2) added ceramics,there is a remarkable difference in the microstructural features as compared to that of pure CCTO *** sample exhibited permittivity values as high as 7387 at 10 KHz and low dielectric loss value of 0.037 at 10 kHz,which can be exploited for the high frequency capacitors application.

关键词： Dielectric TeO_(2) CaCu_(3)Ti_(4)O_(12) ceramic

STRUCTURAL AND DIELECTRIC pROpERTIES OF GLASSES IN THE SYSTEM TeO_(2)-CaCu_(3)Ti_(4)O_(12)

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Journal of Advanced Dielectrics 2012年第4期2卷 47-54页

作者： p.thomas K.B.R.VARMA Dielectric Materials Division Central power Research Institute Bangalore 560080India Materials Research Centre Indian Institute of Science Bangalore 560012India

The glasses in the system(100-x)TeO_(2)-xCaCu_(3)Ti_(4)O_(12),(x=0.25 mol.%to 3 mol.%)were *** color varied from olive green to brown as the CaCu_(3)Ti_(4)O_(12)(CCTO)content increased in TeO_(2) *** X-ray powder diffraction and differential scanning calorimetric analyses that were carried out on the as-quenched samples confirmed their amorphous and glassy nature *** dielectric constant and loss in the 100Hz1MHz frequency range were monitored as a function of temperature(50-400℃).The dielectric constant(ε′_(τ))and the loss(D)increased as the CCTO content increased in TeO_(2) at all the frequencies and temperatures under ***,the ε′_(τ) and D were found to be frequency-independent in the 50-200℃ temperature *** value obtained for the loss at 1MHz was 0.0019 which was typical of low loss materials,and exhibited near constant loss(NCL)in the 100Hz-1MHz frequency *** electrical relaxation was rationalized using the electric modulus *** glasses may be of considerable interest as substrates for high frequency circuit elements in conventional semiconductor industries owing to their high thermal stability.

关键词： Dielectric TeO_(2) CaCu_(3)Ti_(4)O_(12) glass

TeO2-SiO2的溶胶-凝胶制备及红外光谱分析

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TeO2-SiO2的溶胶-凝胶制备及红外光谱分析

高架排放及大粗糙地形条件下稳定度分类方法对大气扩散计算结果的影响

中国化学会第二十五届学术年会

作者：辜敏 p.thomas 鲜晓红卿胜兰重庆大学西南资源开发与环境灾害控制工程教育部重点实验室法国利摩日大学重庆大学化学化工学院重庆大学西南资源开发与环境灾害控制工程教育部重点实验室

Tellurium dioxide-based materials are important because of their very promising nonlinear optical properties, high refractive index and high transmittance from ultraviolet to near infrared. A new rapi

关键词：溶胶-凝胶 TeO2-SiO2 FT-IR光谱

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辐射防护 1988年第2期 121-129+134页

作者：胡二邦 p.thomas 核工业部辐射防护研究所西德卡尔斯鲁厄核研究中心

本文介绍在高架排放及大粗糙地形条件下稳定度分类方法对大气扩散计算结果的影响。采用五种不同的稳定度分类方法,对在西德卡尔斯鲁厄核研究中心（KfK）进行的一系列（22次）高架源（H=100m）大粗糙地形（地面粗糙长度 Z;≈1.5m）条件... 详细信息

本文介绍在高架排放及大粗糙地形条件下稳定度分类方法对大气扩散计算结果的影响。采用五种不同的稳定度分类方法,对在西德卡尔斯鲁厄核研究中心（KfK）进行的一系列（22次）高架源（H=100m）大粗糙地形（地面粗糙长度 Z;≈1.5m）条件下的大气扩散示踪试验数据作了统计分析。结果表明:在大粗糙地形及高架排放条件下,用高斯烟羽模式预报的归一化扩散因子与其实测值符合较好;对同一系列示踪试验数据,用不同稳定度分类方法分析处理会得出不同的弥散系数;在采用推荐的扩散参数进行环境评价时,最好使用与推荐者采用的相同的稳定度分类方法

关键词：大气扩散粗糙度稳定度分类归-化扩散因子

Examining the“revisability”benefit of hip resurfacing arthroplasty

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World Journal of Orthopedics 2024年第6期15卷 554-559页

作者： Jose George Adam J Taylor thomas p Schmalzried Department of Orthopedics Harbor UCLA Medical CenterTorranceCA 90509United States

BACKGROUND Hip resurfacing arthroplasty(HRA)is an alternative to total hip arthroplasty(THA)that is typically reserved for young active patients because it preserves ***,the benefits of HRA only hold true if conversion THA after failed HRA provides acceptable *** To compare patient reported outcomes for conversion THA after HRA failure to primary *** A retrospective review of 36 patients(37 hips)that underwent conversion THA for failed HRA between October 2006 and May 2019 by a single surgeon was *** reported outcomes[modified Harris Hip Score(mHHS),University of California Los Angeles(UCLA)activity score]were obtained via an email-based responder-anonymous *** were compared to normative data of a primary THA cohort with similar *** analysis was performed comparing outcomes of conversion THA for adverse local tissue reaction(ALTR)vs all other causes for *** The study group had a lower mHHS than the control group(81.7±13.8 vs 90.2±11.6,pps had similar UCLA activity levels(7.5±2.3 vs 7.2±1.6,p=0.51).patients that underwent conversion for non-ATLR causes had similar mHHS(85.2±11.5 vs 90.2±11.6,p=0.11)and higher UCLA activity levels(8.5±1.8 vs 7.2±1.6,ppared to the control *** that underwent conversion for ATLR had worse mHHS(77.1±14.5 vs 90.2±11.6,pp=0.05)when compared to the control *** patient outcomes equivalent to primary THA can be achieved following HRA conversion to ***,inferior outcomes were demonstrated for ALTR-related HRA *** selection and perhaps further studies examining alternative HRA bearing surfaces should be considered.

关键词： Total hip arthroplasty Hip resurfacing arthroplasty Conversion total hip arthroplasty Adverse local tissue reaction patient reported outcome measures