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Intelligent interaction system based on multimodal conformal triboelectric nanogenerator patch for disabled sports and life

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Science China Technological Sciences 2025年

作者： Yuzhang WEN Mengqi ZHANG Zhenning XIE Zida AN Bing LIU Fengxin SUN Tianming ZHAO Zuojun YU Fei WANG Yupeng MAO Physical Education Department Northeastern University(Shenyang) Faculty of Robot Science and Engineering Northeastern University Criminal Investigation Police University of China State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences China ice Sports College Beijing Sport University

Intelligent interaction technology based on advanced sensing units has become a research hotspot. In this paper, an intelligent interaction system (IIS) based on a multimodal conformal triboelectric nanogenerator patch (MCTP) is reported for sports monitoring and life promotion of the disabled. This IIS consists of a cloud-based smart sports recognition program and a smart life application. The porous micro-reinforced structure of polyurethane (PU) Sponge&Ecoflex, and the surface modification of PTFE by coating it with MXene endows the MCTP with excellent electrical properties. It shows good angle and force sensitivities of 1.1 V/°and 1.61 V/N, respectively, and has an ultra-fast response time of 15 ms, meeting the needs of human motion monitoring. The MCTP can also capture the mechanical energy, producing a maximum output power of 139μ*** with the commercial inertial measuring unit (IMU), the MCTP shows better consistency in human joint angle sensing. A precise analysis of wheelchair curling sports monitoring points is achieved by combining the MCTP and the human anatomy model. The cloud-based smart sports recognition program utilizes machine learning to achieve visual feedback on the three throwing technologies of draw, takeout and clearing. In addition, the developed smart life application uses a highsensitivity MCTP-sensor array design to achieve a variety of smart home interactions through simple finger touches. Overall,the IIS integrates the three major functions of smart sports sensing, energy capture, and smart home control, providing important application prospects in the fields of smart sports and human-computer interaction for the disabled.

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Preparation and Compaction Behaviour of Poly(methyl methacrylate) Coated Iron Microparticles

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Journal of Materials Science & Technology 2010年第5期26卷 454-460页

作者： Daniela Kladeková Renáta Orináková Annamária Krajníková Miriam Kupková Margita Kabátová Kveta Markuová Institute of Chemistry Faculty of ScienceP.J.afárik University in Koice Institute of Materials Research of the Slovak Academy of Sciences in Koice

The poly（methyl methacrylate）（PMMA） coatings onto surface of iron particles were electrochemically prepared and the effect on both surface structure and internal structure of the resulted material after compaction was carried *** electrochemical polymerization treatment was performed in a fluidized bed electrolyzer using sulphuric acid solution containing potassium persulphate and methyl methacrylate（MMA）.The surface topography and the microstructure of the samples were observed by scanning electron microscopy（SEM） and optical microscopy（OM）.It was found that the PMMA layer coated onto iron particles results in improvement of their compressibility compared with uncoated powders,and classical lubricants are not necessary for compacting particles coated.

关键词： Cathodic electropolymerization Poly(methyl methacrylate) coating Surface appearance Microstructure Compaction process

Effect of Varying Carbon Content and Shot Peening upon Fatigue Performance of Prealloyed Sintered Steels

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Journal of Materials Science & Technology 2009年第5期25卷 607-610页

作者： R.Bidulsky M.Actis-Grande M.Kabtov J.Bidulsk Politecnico Torino Alessandria CampusV.T.Michel5Alessandria 15000Italy Institute of Materials Research SASWatsonova 47Koice04011Slovakia Technical University of Koice Faculty of MetallurgyLetn9Koice 04200Slovakia

The aim of the work was to find out how the modification of surface treatment and microstructures affect the fatigue characteristics of the considered sintered materials. Two different systems were prepared： as-sintered and shot peened prealloyed sintered （Astaloy CrL based） steels with addition of 0.5% and 0.7% C. Sintering was carried out in laboratory tube furnace in an atmosphere of pure gases 75%N2＋25%H2. The sintering temperature was 1180℃ and sintering time was 60 min. Heating and cooling rates were 10℃/min. Fatigue tests were carried out in symmetric plane bending at stress ratio R=-1 with frequency of about 24 Hz. The presented experimental results showed that prealloyed water-atomised steels, with surface modification, exhibit positive effects on the fatigue failure resistance, and for that reason are suitable for high-performance applications.

关键词： Sintered steels Shot peening Fatigue strength S-N curves

Iterative signal reconstruction of deliberately clipped SMT signals

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Science China(Information Sciences) 2014年第2期57卷 5-17页

作者： KOLLR Zsolt GAZDA Juraj HORVTH Pter VARGA Lajos KOCUR Duan Budapest University of Technology and Economics Technical University of Koice

Staggered MultiTone(SMT)is a modulation technique showing significantly reduced Adjacent Channel Leakage Ratio(ACLR)resulting in a more compact Power Spectrum Density(PSD)for the transmitted signal,than the well-known and already widely adopted Orthogonal Frequency Division Multiple Access(OFDMA)***,the unique spectral properties of an SMT signal could be degraded by a non-linear element(e.g.a Power Amplifier(PA))in the *** baseband clipping can be applied to the transmitted signal,reducing the notable high Peak-to-Average Power Ratio(PAPR).The objective of this paper is to give a brief introduction to the SMT scheme,with a special emphasis on deliberate clipping efects and their *** paper introduces two receiver-oriented iterative methods aiming at the restoration of the baseband Bit Error Rate(BER)performance of a non-clipped *** methods are evaluated and compared based on numerical *** paper concludes with the selection of a possible candidate for use in systems applying deliberately clipped SMT signals.

关键词： clipping SMT iterative decoding nonlinear distortion PAPR

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台湾新型态购物天堂

航空港 2013年第1期 98-99页

作者： fn.ice 台商国际传媒新光三越义大世界柏地广场 fn.ice

年节将至,在年假期间安排旅游行程,让自己有个丰富又精彩的美好假期是忙碌现代人的年节度假首选。如今购物不只是旅游的重要环节,随着经济发展,更成为许多人日常生活不可或缺的一部分。在台湾,从历史悠久且于主要城市均有据点的新光三... 详细信息

年节将至,在年假期间安排旅游行程,让自己有个丰富又精彩的美好假期是忙碌现代人的年节度假首选。如今购物不只是旅游的重要环节,随着经济发展,更成为许多人日常生活不可或缺的一部分。在台湾,从历史悠久且于主要城市均有据点的新光三越、结合食衣住行育乐等功能的高雄义大世界或以开创百货公司新型态为依归的台中柏地广场等,这些各具特色并结合休闲育乐功能的新型态百货公司,成为台湾旅游及购物的

关键词：购物天堂百货公司购物广场

Joins of 1-Planar Graphs

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Acta Mathematica Sinica,English Series 2014年第11期30卷 1867-1876页

作者： Július CZAP Dvid HUDK Tom MADARAS Department of Applied Mathematics and Business Informatics Faculty of Economics Technical University of KoiceNěmcovej 32040 01 KoiceSlovakia VSL Software a.s.Lomen 8040 01 KoiceSlovakia Institute of Mathematics Faculty of SciencePavol Jozef afrik University Jesenn 5040 01 KoiceSlovakia

A graph is called 1-planar if it admits a drawing in the plane such that each edge is crossed at most *** this paper,we study 1-planar graph *** prove that the join G ＋ H is 1-planar if and only if the pair [G,H] is subgraph-majorized by one of pairs [C3 ∪ C3,C3],[C4,C4],[C4,C3],[K2,1,1,P3] in the case when both elements of the graph join have at least three *** one element has at most two vertices,then we give several necessary/sufficient conditions for the bigger element.

关键词： 1-Planar graph join product

Advantageous mechanochemical synthesis of copper(Ⅰ)selenide semiconductor,characterization,and properties

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Frontiers of Chemical Science and Engineering 2022年第3期16卷 433-442页

作者： Katarína Gáborová Marcela Achimovičová Michal Hegedüs Vladimír Girman Mária Kaňuchová Erika Dutková Institute of Geotechnics Slovak Academy of SciencesKošice04001Slovakia Institute of Metallurgy Faculty of MaterialsMetallurgy and RecyclingTechnical UniversityKošice04201Slovakia Synthon s.r.o.Blansko67801Czech Republic Faculty of Science Pavol JozefŠafárik UniversityKošice04154Slovakia Institute of Earth Resources Faculty of MiningEcologyProcess Control and GeotechnologiesTechnical UniversityKošice04200Slovakia

Copper(I)selenide-nanocrystalline semiconductor was synthesized via one-step mechanochemical synthesis after 5 min milling in a planetary ball *** kinetics of synthesis was followed by X-ray powder diffraction analysis and specific surface area measurements of milled 2Cu/Se *** X-ray diffraction confirmed the orthorhombic crystal structure of Cu_(2)Se with the crystallite size∼25 *** surface chemical structure was studied by X-ray photoelectron spectroscopy,whereby the binding energy of the Cu 2p and Se 3d signals corresponded to Cu^(+)and Se^(2−)oxidation *** electron microscopy revealed agglomerated nanocrystals and confirmed their orthorhombic structure,as *** optical properties were studied utilizing ultraviolet-visible spectroscopy and photoluminescence *** direct bandgap energy 3.7 eV indicated a blue-shift phenomenon due to the quantum size *** type of Cu_(2)Se synthesis can be easily adapted to production dimensions using an industrial vibratory *** advantages of mechanochemical synthesis represent the potential for inexpensive,environmentally-friendly,and waste-free manufacturing of Cu_(2)Se.

关键词： Cu_(2)Se berzelianite nanocrystalline semiconductor mechanochemical synthesis planetary ball mill

Dasuopu ice core record of atmospheric methane over the past 2000 years

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Science China Earth Sciences 2001年第8期44卷 689-695页

作者：徐柏青姚檀栋 LIGG CAS Laboratory of Ice Core and Cold Regions Environment Lanzhou China

The concentrations of CH4 in the atmosphere over the past 2000 years have been deduced by extracting and analyzing the air in bubbles embedded in the Dasuopu ice core, Qing-hai-Tibetan Plateau. Upon analyzing 57 ice core samples we found that the concentration of CH4 200 years ago and earlier was 0.85μmol · mol-1 or about 40% of present atmospheric CH4 levels over Qinghai-Tibetan Plateau. A rapid and significant increase of atmospheric CH4 started about 200-250 a ago. For a given age before 19th century, the Dasuopu CH4 concentrations were about 15%-20% higher than those in Antarctic and Greenland references. It was also found that the Dasuopu CH4 concentrations changed more frequently, and its fluctuations could reflect the temperature change sensitively.

关键词： Dasuopu ice core air in ice core bubbles CH4 concentration.

A new analytical model for thermal stresses in multi-phase materials and lifetime prediction methods

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Acta Mechanica Sinica 2008年第2期24卷 189-206页

作者： Ladislav Ceniga Institute of Materials Research Slovak Academy of Sciences Watsonova 47 04353 Koice Slovak Republic

Based on the fundamental equations of the mechanics of solid continuum, the paper employs an analytical model for determination of elastic thermal stresses in isotropic continuum represented by periodically distributed spherical particles with different distributions in an infinite matrix, imaginarily divided into identical cells with dimensions equal to inter-particle distances, containing a central spherical particle with or without a spherical envelope on the particle surface. Consequently, the multi-particle-（envelope）- matrix system, as a model system regarding the analytical modelling, is applicable to four types of multi-phase materials. As functions of the particle volume fraction v, the inter-particle distances dl, d2, d3 along three mutually per- pendicular axes, and the particle and envelope radii, R1 and R2, respectively, the thermal stresses within the cell, are originated during a cooling process as a consequence of the difference in thermal expansion coefficients of phases rep- resented by the matrix, envelope and particle. Analytical-（experimental）-computational lifetime prediction methods for multi-phase materials are proposed, which can be used in engineering with appropriate values of parameters of real multi-phase materials.

关键词： Thermal stress Multi-phase material Lifetime prediction Analytical modelling