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Journal of Central South University 2016年第1期23卷 160-168页

作者： KWON Il-kyoung lee sang-yong Division of Computer Science & Engineering Kongju National University Department of Computer Science & Engineering Kongju National University

Research on human emotions has started to address psychological aspects of human nature and has advanced to the point of designing various models that represent them quantitatively and systematically. Based on the findings, a method is suggested for emotional space formation and emotional inference that enhance the quality and maximize the reality of emotion-based personalized services. In consideration of the subjective tendencies of individuals, AHP was adopted for the quantitative evaluation of human emotions, based on which an emotional space remodeling method is suggested in reference to the emotional model of Thayer and Plutchik, which takes into account personal emotions. In addition, Sugeno fuzzy inference, fuzzy measures, and Choquet integral were adopted for emotional inference in the remodeled personalized emotional space model. Its performance was evaluated through an experiment. Fourteen cases were analyzed with 4.0 and higher evaluation value of emotions inferred, for the evaluation of emotional similarity, through the case studies of 17 kinds of emotional inference methods. Matching results per inference method in ten cases accounting for 71% are confirmed. It is also found that the remaining two cases are inferred as adjoining emotion in the same section. In this manner, the similarity of inference results is verified.

关键词： fuzzy measure fuzzy integral emotional model emotion space AHP fuzzy inference system Choquet integral

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正负压序贯冲吸装置的设计与应用

医疗卫生装备 2025年第1期46卷 114-117页

作者：桑昆峰钟先进黄家丽中国科学技术大学附属第一医院西区(安徽省肿瘤医院)ICU 合肥230031 中国科学技术大学附属第一医院西区(安徽省肿瘤医院)护理部合肥230031

目的:设计正负压序贯冲吸装置,并测试其在疏通鼻肠管堵管中的应用效果。方法:该装置主要包括正压冲洗部分、负压吸引部分、三通转接头和精准疏通器。正压冲洗部分包括正压冲洗装置、正压压力调节器、压力传感器、加压软袋等;负压抽吸部... 详细信息

目的:设计正负压序贯冲吸装置,并测试其在疏通鼻肠管堵管中的应用效果。方法:该装置主要包括正压冲洗部分、负压吸引部分、三通转接头和精准疏通器。正压冲洗部分包括正压冲洗装置、正压压力调节器、压力传感器、加压软袋等;负压抽吸部分包括负压吸引装置、负压压力调节器、负压表、负压瓶等。正压冲洗部分中的加压软袋为中空圆柱形,内层材料为普通聚氯乙烯,外层材料为丙烯腈-苯乙烯-丁二烯共聚物。选取发生鼻肠管堵管的60例患者,随机将其分为对照组和观察组各30例,对照组采用10 mL注射器,观察组采用正负压序贯冲吸装置,均予38~40℃温水疏通,比较2组的疏通效果、堵管疏通所需时间、营养支持天数及费用。采用SPSS 22.0软件对数据进行统计学分析。结果:观察组疏通总有效率(93.3%)高于对照组(73.4%),疏通效果优于对照组,鼻肠管堵管疏通时间、营养支持天数及费用[(7.63±4.97)min、(10.07±3.07)d、(3 180±260)元]少于对照组[(10.73±4.57)min、(13.03±4.05)d、(4 550±660)元],差异有统计学意义(P均<0.05)。结论:正负压序贯冲吸装置可以有效提升鼻肠管堵管疏通效果、缩短堵管疏通所需时间、减少营养支持天数及费用,具有一定实用价值。

关键词：正压冲洗负压抽吸肠内营养支持鼻肠管鼻肠管堵管疏通

Adhesion and Suction Functions of the Tip Region of a Nectar-drinking Butterfly Proboscis

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Journal of Bionic Engineering 2017年第4期14卷 600-606页

作者： Seung Chul lee Jun Ho Kim sang Joon lee Department of Mechanical Engineering Pohang University of Science and Technology Pohang 37673 Gyeongbuk Republic of Korea Center for Biofluid and Biomimic Research Pohang University of Science and Technology Pohang 37673 Gyeongbuk Republic of Korea

In this study, we investigated the dynamic functions of the tip region of the butterfly proboscis through which liquid is sucked during liquid feeding. The microstructures and flow patterns in the tip region of the proboscis were in vivo analyzed. The tip region can be divided into two functional sections： namely adhesion and suction sections. The liquid adheres to the adhesion section during liquid suction. Although the tip region has numerous slits connected to food canal of the proboscis, liquid is mainly sucked through the suction section, which section is submerged in the fluid pulled by the adhesion section and then successfully imbibes liquid. To check the dynamic functions of the tip region, we fabricated a suction tip model having adhesion and suction parts. The in vitro model experiments show that the hydrophilicity of the adhesion part and the existence of the suction inlet improve the liquid uptake driven by a suction pump. This study may provide insights for the biomimetic design of nectar-feeding butterflies.

关键词： butterfly proboscis nectar-feeding strategy suction

Dynamic observation of dendrite growth on lithium metal anode during battery charging/discharging cycles

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npj Computational Materials 2022年第1期8卷 960-972页

作者： Hae Gon lee Se Young Kim Joon sang lee Next Generation Battery Research Center Korea Electrotechnology Research Institute(KERI)12Jeongiui-gilSeongsan-guChangwon-siGyeongsangnam-do51543Republic of Korea Department of Mechanical Engineering Yonsei University50 Yonsei-roSeodaemun-guSeoul03722Republic of Korea

Lithium metal is considered one of the most promising anode materials for application in next-generation ***,despite decades of research,practical application of lithium metal batteries has not yet been achieved because the fundamental interfacial mechanism of lithium dendrite growth is not yet fully *** this study,a series of reactive molecular dynamics (MD) simulations was performed to investigate the electrochemical dynamic reactions at the electrode/electrolyte *** allows quantitative characterization of morphological phenomena and real-time interfacial visualization of the dynamic growth of dead lithium and dendrites during repeated *** computational protocol was utilized to investigate the dendrite mitigation mechanism when an electrolyte additive (hydrogen fluoride) is dissolved in an organic ethylene carbonate (EC) electrolyte *** was confirmed that beneficial decomposition reactions between electrolyte components form a protective film on the anode surface,suppressing large interphase volume changes and unnecessary degradation reactions.

关键词： battery lithium electrolyte

Epidemic obesity in children and adolescents:risk factors and prevention

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Frontiers of Medicine 2018年第6期12卷 658-666页

作者： Eun Young lee kun-Ho Yoon Division of Endocrinology and Metabolism Department of Internal MedicineSeoul St.Mary's HospitalCollege of MedicineThe Catholic University of KoreaSeoul 06591Korea Institute of Catholic Ubiquitous Health Care The Catholic University of KoreaSeoul 06591Korea

The prevalence of obesity among children and adolescents (aged 2-18 years) has increased rapidly, with more than 100 million affected in 2015. Moreover, the epidemic of obesity in this population has been an important public health problem in developed and developing countries for the following reasons. Childhood and adolescent obesity tracks adulthood obesity and has been implicated in many chronic diseases, including type 2 diabetes, hypertension, and cardiovascular disease. Furthermore, childhood and adolescent obesity is linked to adulthood mortality and premature death. Although an imbalance between caloric intake and physical activity is a principal cause of childhood and adolescent obesity, environmental factors are exclusively important for development of obesity among children and adolescents. In addition to genetic and biological factors, socioenvironmental factors, including family, school, community, and national policies, can play a crucial role. The complexity of risk factors for developing obesity among children and adolescents leads to difficulty in treatment for this population. Many interventional trials for childhood and adolescent obesity have been proven ineffective. Therefore, early identification and prevention is the key to control the global epidemic of obesity. Given that the proportion of overweight children and adolescents is far greater than that of obesity, an effective prevention strategy is to focus on overweight youth, who are at high risk for developing obesity. Multifaceted, comprehensive strategies involving behavioral, psychological, and environmental risk factors must also be developed to prevent obesity among children and adolescents.

关键词： adolescents children epidemiology obesity prevention risk factor

Fuzzy entropy design for non convex fuzzy set and application to mutual information

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Journal of Central South University 2011年第1期18卷 184-189页

作者： lee sang-Hyuk lee sang-Min SOHN Gyo-Yong KIM Jaeh-Yung Department of Electronics Engineering Inha UniversityIncheon 402-751Korea School of Electrical Engineering and Computer Science Kyungpook National UniversityDaegu 702-701Korea School of Mechatronics Changwon National University

Fuzzy entropy was designed for non convex fuzzy membership function using well known Hamming distance *** proposed fuzzy entropy had the same structure as that of convex fuzzy membership *** procedure of fuzzy entropy was proposed by considering fuzzy membership through distance measure,and the obtained results contained more flexibility than the general fuzzy membership ***,characteristic analyses for non convex function were also *** on the mutual information were carried out through the proposed fuzzy entropy and similarity measure,which was also dual structure of fuzzy *** the illustrative example,mutual information was discussed.

关键词： fuzzy entropy non convex fuzzy membership function distance measure similarity measure mutual information

Surface Tension and Temperature Effect on Entrapment of Bubbles and Particles in Continuous Casting of Steel

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Journal of Iron and Steel Research International 2011年第S2期18卷 220-226页

作者： sang-Min lee sang-Joon Kim Hae-Geon lee Graduate Institute of Ferrous Technology Pohang University of Science and Technology 31 San Pohang kyoungbuk Korea

The entrapment behavior of Ar bubbles onto the solidifying front of molten steel in the continuous casting mold was investigated. The dynamic model of bubble and particle entrapment was developed in order to consider the effect of surface tension gradient induced forces(Marangoni force) due to the gradient of sulfur concentration and temperature. The numerical analysis and water model experiment were performed to apply the present model for various conditions. The calculation result is compared with experimental results and plant data in continuous casting mold as well. It shows that the thermal Marangoni force could play an important role and this model predicts the bubble behavior in the vicinity of solid/liquid interface more precisely.

关键词： bubble continuous casting surface tension gradient marangoni force

A NEW BOUNDARY CONDITION FOR RATE-TYPE NON-NEWTONIAN DIFFUSIVE MODELS AND THE STABLE MAC SCHEME

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Journal of Computational Mathematics 2018年第4期36卷 605-626页

作者： kun Li Youngju lee Christina Starkey BGP R&D Center CNPC Beijing 100871 China Department of Mathematics Texas State University San Marcos TX 78666 USA

We present a new Dirichlet boundary condition for the rate-type non-Newtonian diffusive constitutive models. The newly proposed boundary condition is compared with two such well-known and popularly used boundary conditions as the pure Neumann condition and the Dirichlet condition by Sureshkumar and Beris. Our condition is demonstrated to be more stable and robust in a number of numerical test cases. A new Dirichlet boundary condition is implemented in the framework of the finite difference Marker and Cell （MAC） method. In this paper, we also present an energy-stable finite difference MAC scheme that preserves the positivity for the conformation tensor and show how the addition of the diffusion helps the energy-stability in a finite difference MAC scheme-setting.

关键词： Boundary Conditions Diffusive Complex Fluids models Positivity preserving schemes Stability of the MAC schemes

Continuous Tracking of GPS Signals with Data Wipe-Off Method

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Computers, Materials & Continua 2022年第5期71卷 3803-3820页

作者： Dah-Jing Jwo kun-Chan lee Department of Communications Navigation and Control EngineeringTaiwan Ocean UniversityKeelung202301Taiwan

The decentralized pre-filter based vector tracking loop(VTL)configuration with data wipe-off(DWO)method of the Global Positioning System(GPS)receiver is proposed for performance *** is a challenging task to continuously track the satellites’signals in weak signal environment for the GPS *** is a very attractive technique as it can provide tracking capability in signal-challenged *** the VTL,each channel will not form a loop *** the contrary,the signals in the channels of VTL are shared with each other;the navigation processor in turn predicts the code ***,the receiver can successfully track signals even the signal strength from individual satellite is *** tracking loop based on the pre-filter provides more flexible adjustment to specific environments to reduce noise ***,even if the signals from some satellites are very weak the receiver can track them from the navigation results based on the other *** navigation data,which contains information necessary to perform navigation computations,are binary phase-shift keying(BPSK)modulated onto the GPS carrier phase with the bit duration of 20 ms(i.e.,50 bits per second)for the GPS L1 C/A *** coherent integration interval can be extended for improved tracking performance in signal-challenged ***,tracking accuracy is decreased by possible data bit sign *** DWO algorithm can be employed to remove the data bit in I and Q correlation values so as to avoid energy loss due to bit transitions when the integration interval of the correlator is extended over 20 ms under the low carrier-to-noise ratio(C/No)*** proposed method has an advantage to provide continuous tracking of signals and obtain improved navigation *** evaluation of the tracking capability as well as positioning accuracy will be presented.

关键词： Global positioning system(GPS) vector tracking loop pre-filter data wipe-off weak signal

Speech enhancement through voice activity detection using speech absence probability based on Teager energy

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Journal of Central South University 2013年第2期20卷 424-432页

作者： PARKYun-sik lee sang-min Department of Electronic Engineering Inha University Institute for Information and Electronics Research Inha University

In this work, a novel voice activity detection （VAD） algorithm that uses speech absence probability （SAP） based on Teager energy （TE） was proposed for speech enhancement. The proposed method employs local SAP （LSAP） based on the TE of noisy speech as a feature parameter for voice activity detection （VAD） in each frequency subband, rather than conventional LSAP. Results show that the TE operator can enhance the abiTity to discriminate speech and noise and further suppress noise components. Therefore, TE-based LSAP provides a better representation of LSAP, resulting in improved VAD for estimating noise power in a speech enhancement algorithm. In addition, the presented method utilizes TE-based global SAP （GSAP） derived in each frame as the weighting parameter for modifying the adopted TE operator and improving its performance. The proposed algorithm was evaluated by objective and subjective quality tests under various environments, and was shown to produce better results than the conventional method.

关键词： speech enhancement Teager energy speech absence probability voice activity detection