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Underground Space 2021年第3期6卷 267-280页

作者： Zhi-Feng Wang Wen-chieh Cheng School of Highway Chang’an UniversityXi’an 710064China Department of Statistics Virginia Polytechnic Institute and State UniversityBlacksburg 24060United States School of Civil Engineering Xi’an University of Architecture and TechnologyXi’an 710055China Shaanxi Key Laboratory of Geotechnical and Underground Space Engineering(XAUAT) Xi’an 710055China

This paper describes an approach for predicting the diameter of a jet-grout column using the support vector regression(SVR)technique,which is regarded as a novel learning machine based upon recent advances in statistical theory,in which the combined effects of the construction(construction methods and jetting parameters)and soil properties(soil type and shearing resistance)are *** different kernel functions,namely,a linear kernel function,polynomial kernel function,radial basis kernel function,and sigmoid kernel function,are integrated into the SVR technique.A large amount of field measured data on the diameter of jet-grout column are retrieved from the published literature for training and testing *** results indicate that the SVR technique with a radial basis kernel function provides predictions closest to the measured results,whereas the prepared design charts enable the ability to significantly widen the application of the proposed approach to the areas of ground improvement and environmental protection.

关键词： Jet grouting Support vector regression Machine learning Radial basis function

A social interaction system based on cloud computing for mobile video telephony

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Science China(Information Sciences) 2014年第3期57卷 19-28页

作者： YU Yuan-chih Department of Information Management Chinese Culture University

As the use of smartphones become popular,people heavily depend on smartphone applications to deal with their social *** this reason,traditional message texting between mobile applications does not fulfill the versatile requirements of social *** mobile applications use multimodality to deliver multimedia messages including sticker,voice and photo message,video call,and snap movie to enhance the communicative ***,without face-to-face interaction,people may fail to detect the other side’s non-verbal social behavior such as fine-grain facial expressions,body movements,or hand *** social interaction,non-verbal behavior conveys information about the involved individuals and help the speakers express their social emotion in an implicit *** is so important for real-world face-to-face interaction but is often blocked on the mobile *** cope with this problem,we propose an afective computing model to assist the representation of social emotion and then help the progress of social interaction on the mobile *** this model,for the purpose of real-time afective analysis,we delegate the computing loading to the cloud side service and enhance the system’s scalability and *** result of this experiment approves the feasibility of our system design for the applications of social ***,the system provides a research framework of the social intelligent system on the mobile telephony.

关键词： social interaction social emotion mobile telephony sensor fusion social signal processing

The dilemma of implantable cardioverter-defibrillator therapy in the geriatric population

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Journal of Geriatric Cardiology 2011年第3期8卷 195-200页

作者： Diana Revenco James P Morgan Lana tsao Steward St. Elizabeth＇s Medical Center Steward Carney Hospital and Tufts University School of Medicine Boston MA 02135 USA

Current guidelines for implantable cardioverter-defibrillator （ICD） therapy in heart failure patients were established by multiple device Irials; however, very few geriatric patients （patients ≥ 65 years old） were included in these studies. This article explores the controversies of ICD implantation in the geriatric population, management of delivered ICD therapy in this age group, and the end of life care in patients with ICD.

关键词： ICD therapy heart failure geriatric population

Size effect in plastically deformed passivated thin films

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Science China(Physics,Mechanics & Astronomy) 2009年第9期52卷 1375-1381页

作者： HWANG Keh-chih AML Department of Engineering Mechanics Tsinghua University

The flow theory of mechanism-based strain gradient plasticity theory (MSG) developed by Qiu et al. (2003) is extended for incompressible material. The MSG flow theory is used to predict the increase of plastic work hardening for plane strain tension of surface-passivated Cu thin film. The theoretical predictions agree well with experiments for suitably chosen material parameters.

关键词： MSG theory strain gradient plasticity passivation thin film plain strain tension

A Low Complexity Algorithm for Subcarrier-and-Bit Allocation in OFDMA-Based LTE Systems

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Journal of Electronic Science and Technology 2016年第4期14卷 355-361页

作者： Wei-Chiang Wu chieh-Yen Hsu the Department of Electrical Engineering Da-Yeh University

In this paper, we propose optimum and sub-optimum resource allocation and opportunistic scheduling solutions for orthogonal frequency division multiple access （OFDMA）-based multicellular systems. The applicability, complexity, and performance of the proposed algorithms are analyzed and numerically evaluated. In the initial setup, the fractional frequency reuse （FFR） technique for inter-cell interference cancellation is applied to classify the users into two groups, namely interior and exterior users. Adaptive modulation is then employed according to the channel state information （CSI） of each user to meet the symbol error rate （SER） requirement. There then, we develop subcarrier-and-bit allocation method, which maximizes the total system throughput subject to the constraints that each user has a minimum data rate requirement. The algorithm to achieve the optimum solution requires high computational complexity which hinders it from practicability. Toward this suboptimum method with the reduced to the order of O（NIO, the total number of subcarriers end, we complexity propose a extensively where N and K denote and users, respectively. Numerical results show that the proposed algorithm approaches the optimum solution, yet it enjoys the features of simplicity, dynamic cell configuration, adaptive subearrier-and-bit allocation, and spectral efficiency.

关键词： Adaptive modulation fractional frequency reuse multiuser subcarrier-and-bit allocation,opportunistic scheduling orthogonal frequency division multiple access.

Sieve element occlusion provides resistance against Aphis gossypii in TGR-1551 melons

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Insect Science 2020年第1期27卷 33-48页

作者： Hsuan-chieh Peng Gregory P.Walker Department of Microbiology and Plant Pathology University of CaliforniaRiversideCaliforniaUSA Department of Entomology University of CaliforniaRiversideCaliforniaUSA

Feeding behavior and plant response to feeding were studied for the aphid Aphis gossypii Glover on susceptible and resistant melons(*** and TGR-1551,respectively).Average phloem phase bout duration on TGR-1551 was<7% of the duration on ***-seven percent of aphids on TGR-1551 never produced a phloem phase that attained ingestion(EPG waveform E2)in contrast to only 7% of aphids on *** bout duration of waveform E2(scored as zero if phloem phase did not attain E2)on TGR-1551 was<3% of the duration on ***,average bout duration of EPG waveform El(sieve element salivation)was 2.8 times greater on TGR-1551 than on *** a second experiment,liquid nitrogen was used to rapidly cryofix leaves and aphids within a few minutes after the aphids penetrated a sieve *** near the penetration site was then examined by confocal laser scanning ***-six percent of penetrated sieve elements were occluded by protein in TGR-1551 in contrast to only 28% in *** in TGR-1551,occlusion was also observed in nearby nonpenetrated sieve ***,a calcium channel blocker,trivalent lanthanum,was used to prevent phloem occlusion in TGR-1551,and *** feeding behavior and the plants phloem response were compared between lanthanum-treated and control *** treatment eliminated the sieve element protein occlusion response and the aphids readily ingested phloem sap from treated *** study provides strong evidence that phloem occlusion is a mechanism for resistance against *** in TGR-1551.

关键词： aphid feeding behavior Aphis gossypii Cucumis melo insect-plant resistance phloem occlusion sieve element occlusion proteins

Botulinum toxin injection for Cockayne syndrome with muscle spasticity over bilateral lower limbs:A case report

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World Journal of Clinical Cases 2021年第18期9卷 4728-4733页

作者： Lin-chieh Hsu Po-Ying Chiang Wei-Pin Lin Yao-Hong Guo Pei-Chun Hsieh Ta-Shen Kuan Wei-chih Lien Yu-Ching Lin Department of Physical Medicine and Rehabilitation National Cheng Kung University HospitalCollege of MedicineNational Cheng Kung UniversityTainan 704Taiwan Department of Physical Medicine and Rehabilitation College of MedicineNational Cheng Kung UniversityTainan 704Taiwan Medical Device Innovation Center National Cheng Kung UniversityTainan 704Taiwan

BACKGROUND Cockayne syndrome(CS)is a rare inherited disease characterized by progressive motor symptoms including muscle weakness,joint contracture,ataxia,and *** neurotoxin type A has been used for conditions such as dystonia and spasticity,but it has rarely been used in patients with *** SUMMARY We report a 6-year-and-9-mo old girl diagnosed with CS who received an injection of botulinum neurotoxin type A to manage her difficulty with walking.A total dose of 210 units of botulinum neurotoxin type A was administered into the bilateral tibialis posterior and gastrocnemius *** evaluate the treatment effects on spasticity,joint contracture,pain,and ataxia,measurement tools including the Modified Ashworth Scale,the passive range of motion,the Faces Pain Scale-Revised,and the Scale for the Assessment and Rating of Ataxia,were *** first week after the injection,the Modified Ashworth Scale score for the plantar flexors and foot invertors improved bilaterally,along with advancements in the passive range of motion of the bilateral ankles and a lower score for the Faces Pain *** treatment effects persisted to the 8th week post-injection,but returned to baseline values at the 12th week post-injection,except for the pain *** Botulinum toxin injection can thus be considered as a treatment option for lower extremity spasticity,joint contracture,and pain derived from CS.

关键词： Cockayne syndrome Botulinum toxin Spasticity Pain Ataxia Case report

Machine learning to relate PM2.5 and PM10 concentrations to outpatient visits for upper respiratory tract infections in Taiwan:A nationwide analysis

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World Journal of Clinical Cases 2018年第8期6卷 200-206页

作者： Mei-Juan Chen Pei-Hsuan Yang Mi-Tren Hsieh Chia-Hung Yeh chih-Hsiang Huang chieh-Ming Yang Gen-Min Lin Department of Electrical Engineering National Dong Hwa University Department of Electrical Engineering National Taiwan Normal University Department of Electrical Engineering National Sun Yat-sen University Department of Medicine Hualien Armed Forces General Hospital Departments of Medicine Tri-Service General HospitalNational Defense Medical Center

AIM To examine the accuracy of machine learning to relate particulate matter(PM) 2.5 and PM10 concentrations to upper respiratory tract infections(URIs).METHODS Daily nationwide and regional outdoor PM2.5 and PM10 concentrations collected over 30 consecutive days obtained from the Taiwan Environment Protection Administration were the inputs for machine learning, using multilayer perceptron(MLP), to relate to the subsequent one-week outpatient visits for URIs. TheURI data were obtained from the Centers for Disease Control datasets in Taiwan between 2009 and 2016. The testing used the middle month dataset of each season(January, April, July and October), and the training used the other months' datasets. The weekly URI cases were classified by tertile as high, moderate, and low *** Both PM concentrations and URI cases peak in winter and spring. In the nationwide data analysis, MLP machine learning can accurately relate the URI volumes of the elderly(89.05% and 88.32%, respectively) and the overall population(81.75% and 83.21%, respectively) with the PM2.5 and PM10 concentrations. In the regional data analyses, greater accuracy is found for PM2.5 than for PM10 for the elderly, particularly in the Central region(78.10% and 74.45%, respectively), whereas greater accuracy is found for PM10 than for PM2.5 for the overall population, particularly in the Northern region(73.19% and 63.04%, respectively).CONCLUSION Short-term PM2.5 and PM10 concentrations were accurately related to the subsequent occurrence of URIs by using machine learning. Our findings suggested that the effects of PM2.5 and PM10 on URI may differ by age, and the mechanism needs further evaluation.

关键词： Particulate matter 2.5 Particulate matter 10 Upper respiratory infections Machine learning Air pollution

Theoretical investigation of shock stand-off distance for non-equilibrium flows over spheres

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Chinese Journal of Aeronautics 2018年第5期31卷 990-996页

作者： Hua SHEN chih-Yung WEN Extreme Computing Research Center Computer Electrical and Mathematical Science and Engineering DivisionKing Abdullah University of Science and Technology Department of Mechanical Engineering The Hong Kong Polytechnic University

We derived a theoretical solution of the shock stand-off distance for a non-equilibrium flow over spheres based on Wen and Hornung＇s solution and Olivier＇s solution. Compared with previous approaches, the main advantage of the present approach is allowing an analytic solution without involving any semi-empirical parameter for the whole non-equilibrium flow regimes. The effects of some important physical quantities therefore can be fully revealed via the analytic solution. By combining the current solution with Ideal Dissociating Gas（IDG） model, we investigate the effects of free stream kinetic energy and free stream dissociation level（which can be very different between different facilities） on the shock stand-off distance.

关键词： Gas dynamics Supersonic/hypersonic flow Shock stand-off distant Non-equilibrium flow Blunt body Shock

基于双增益方法的不确定非线性系统的输出反馈调节问题

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控制与决策 2024年第4期39卷 1260-1266页

作者：殷县龙孙宗耀谭庆全陈智强孟庆华曲阜师范大学自动化研究所山东曲阜273165 北京市地震局北京100080 成功大学系统及船舶机电工程学系中国台湾台南70101 杭州电子科技大学机械工程学院杭州310018

研究一类具有多种不确定性的非线性系统的全局输出反馈调节问题.所研究系统的一个显著特点是非线性项被未知增长率和多项式形式的输出函数的乘积界定,难点是在输出受不确定参数摄动的情况下如何抑制非线性项.提出一种改进的双增益方法... 详细信息

研究一类具有多种不确定性的非线性系统的全局输出反馈调节问题.所研究系统的一个显著特点是非线性项被未知增长率和多项式形式的输出函数的乘积界定,难点是在输出受不确定参数摄动的情况下如何抑制非线性项.提出一种改进的双增益方法来设计输出反馈控制器,可以确保闭环系统所有信号全局一致有界并且原系统状态收敛到零.最后,采用质量弹簧机械系统的输出反馈镇定问题来说明控制策略的有效性.

关键词：输出反馈调节未知增长率输出不确定性双增益方法全局镇定非线性系统