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Parallel Sensing in Metaverses: Virtual-Real Interactive Smart Systems for “6S” Sensing

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IEEE/CAA Journal of Automatica Sinica 2022年第12期9卷 2047-2054页

作者： yu Shen yuhang Liu Yonglin tian Xiaoxiang Na School of Artificial Intelligence University of Chinese Academy of ScienceBeijing 100190China IEEE The State Key Laboratory for Management and Control of Complex Systems Chinese Academy of SciencesBeijing 100190China Department of Engineering University of CambridgeTrumpington StreetCB21PZUnited Kingdom

In the construction of Metaverses,sensors that are referred to as the“bridge of information transmission”,play a key *** functionality and efficiency of today’s sensors,which operate in a manner similar to physical sensing,are frequently constrained by their hardware and *** this research,we proposed the Parallel Sensing framework,which includes background,concept,basic methods and typical application of parallel *** our formulation,sensors are redefined as the integration of real physical sensors and virtual software-defined sensors based on parallel intelligence,in order to boost the performance of the *** sensor will have a parallel counterpart in the virtual world within the framework of parallel *** sensors serve as the brain of sensors and maintain the same properties as physical *** sensing allows physical sensors to operate in discrete time periods to conserve energy,while cloud-based descriptive,predictive,and prescriptive sensors operate continuously to offer compensation data and serve as *** better illustrate parallel sensing concept,we show some example applications of parallel sensing such as parallel vision,parallel point cloud and parallel light fields,both of which are designed by construct virtual sensors to extend small real data to virtual big data and then boost the performance of perception *** results demonstrate the effective of parallel sensing *** interaction between the real and virtual worlds enables sensors to operate actively,allowing them to intelligently adapt to various scenarios and ultimately attain the goal of“Cognitive,Parallel,Crypto,Federated,Social and Ecologic”6S sensing.

关键词： Parallel Sensing Parallel Intelligence CPSS Metaverses Virtual and Real Interaction “6S”Sensing.

Bevacizumab in combination with pemetrexed and platinum for elderly patients with advanced non-squamous non-small-cell lung cancer:a retrospective analysis

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Frontiers of Medicine 2022年第4期16卷 610-617页

作者： Yaru tian Hairong tian Xiaoyang Zhai Hui Zhu Jinming yu Department of Radiation Oncology Shandong Cancer Hospital and InstituteShandong First Medical University and Shandong Academy of Medical ScienceJinan 250117China Department of Radiation Oncology Shandong Cancer Hospital and InstituteShandong UniversityJinan 250117China

Bevacizumab,an anti-VEGF monoclonal antibody,has significantly improved the clinical outcomes of patients with advanced non-squamous NSCLC(ns-NSCLC).However,the safety and efficacy of bevacizumab for elderly patients with advanced NSCLC require further ***,59 patients were included in the present retrospective study,22 patients in the bevacizumab plus pemetrexed and platinum(B+PP)group,and 37 patients in the pemetrexed and platinum(PP)*** the entire cohort of patients,the median OS was 33.3 months,and the 1-year and 2-year overall survival rates were 88.5%and 67.8%,*** median OS and 1-year and 2-year OS rates were 20.5 months,70.3%and 0%,respectively,in the B+PP group and 33.4 months,97.0%and 89.4%,respectively,in the PP group(P<0.001).The incidence of grade≥3 adverse events was higher in the B+PP group than in the PP group(27.3%vs.10.8%,respectively;P=0.204).Univariate and multivariate analyses suggested that the receipt of≥5 cycles of first-line chemotherapy was an independent favorable prognostic factor for OS,whereas the addition of bevacizumab was an unfavorable prognostic *** increased toxicities,the addition of bevacizumab to PP does not improve the overall survival of elderly patients with advanced ns-NSCLC.

关键词： bevacizumab elderly patient advanced non-small-cell lung cancer overall survival toxicity

Thermodynamic Performance Comparison and Optimization of sCO_(2)Brayton Cycle,tCO_(2)Brayton Cycle and tCO_(2)Rankine Cycle

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Journal of Thermal Science 2023年第2期32卷 611-627页

作者： JIANG yu ZHAN Li tian Xuelian NIE Changhua Nuclear Power Institute of China Chengdu 610213China

In this paper,to further improve thermodynamic performance of supercritical carbon dioxide cycle,simple/recompression transcritical carbon dioxide Brayton cycle(STBC/RTBC)and simple/recompression transcritical carbon dioxide Rankine cycle(STRC/RTRC)are *** and exergy performance analysis and optimization for the above four transcritical CO_(2)cycles and simple/recompression supercritical cycle(SSBC/RSBC)are *** effect of key thermodynamic parameters on those CO_(2)cycle performance is *** indicate that the improvements of thermodynamic performance of CO_(2)cycle are obvious when transcritical Brayton and Rankine cycle are applied in *** the same range of optimization variables,the maximum thermal efficiency improvements of RTRC and RTBC are 4.98%and 3.6%,and maximum exergy efficiency improvements of RTRC and RTBC are 7.08%and 5.13%when compared with ***,the thermodynamic performances of STBC and STRC are also outstanding than that of *** work provides a way to further improve the thermodynamic performance of CO_(2)power cycle.

关键词： thermodynamic performance supercritical carbon dioxide transcritical carbon dioxide Brayton cycle Rankine cycle

Recent advances in isolation,identification,and culture of mammalian spermatogonial stem cells

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Asian Journal of Andrology 2022年第1期24卷 5-14页

作者： Hua-Ming Xi Yi-Jie Ren Fa Ren yu Li tian-yu Feng Zhi Wang Ye-Qing du Li-Kun Zhang Jian-Hong Hu Key Laboratory of Animal Genetics Breeding and Reproduction of Shaanxi ProvinceCollege of Animal Science and TechnologyNorthwest Agriculture and Forestry UniversityYangling 712100China

Continuous spermatogenesis depends on the self-renewal and differentiation of spermatogonial stem cells(SSCs).SSCs,the only male reproductive stem cells that transmit genetic material to subsequent generations,possess an inherent self-renewal ability,which allows the maintenance of a steady stem cell *** eventually differentiate to produce ***,in an in vitro culture system,SSCs can be induced to differentiate into various types of germ *** SSCs are well defined,and a culture system has been successfully established for *** contrast,available information on the biomolecular markers and a culture system for livestock SSCs is *** review summarizes the existing knowledge and research progress regarding mammalian SSCs to determine the mammalian spermatogenic process,the biology and niche of SSCs,the isolation and culture systems of SSCs,and the biomolecular markers and identification of *** information can be used for the effective utilization of SSCs in reproductive technologies for large livestock animals,enhancement of human male fertility,reproductive medicine,and protection of endangered species.

关键词： culture identification isolation male germline stem cell spermatogonial stem cell transplantation

Isolation and Characterization of a Putative Class E Gene from Taihangia rupestris

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Journal of Integrative Plant Biology 2007年第3期49卷 343-350页

作者： Yong-Qiang Wang Hui-yu tian Xiao-Qiu du Shan-Hua Lü Wen-Liang Lu Kang Chong Zheng Meng Key Laboratory of Photosynthesis and Environmental Molecular Physiology the Chinese Academy of Sciences Beijing 100093 China Graduate School of the Chinese Academy of Sciences Beijing 100039 China

Studies In model plants showed that SEPALLATA （SEP） genes are required for the Identification of floral organs and the determination of floral meristems In Arabidopsis. In this paper a SEP homolog, TrSEP3, was Isolated from a China-specific species, Taihangla rupestrisi Yü et LI. Phylogenetlc analysis showed that the gene belongs to the SEP3-clade of SEP （previous AGL2） subfamily. In situ hybridization was used to reveal the potential functional specification, and the results showed that TrSEP3 expression was first observed in floral meristems and then confined to the floral primordla of the three inner whorls. In the matured flower, TrSEP3 was strongly expressed In the tips of pistils and weak In stamens and petals. The evolution force analysis shows that TrSEP3 might undergo a relaxed negative selection. These results suggested that TrSEP3 may not only function In determining the identity of floral merlstems and the primordia of three inner whorls, but also function In matured reproductive organs.

关键词： class E gene MADS-box selection pressure Taihangia rupestris

Intermittent Arc Fault Detection Based on Machine Learning in Resonant Grounding Distribution Systems

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CSEE Journal of Power and Energy Systems 2023年第2期9卷 599-611页

作者： Ye tian Mou-Fa Guo duan-yu Chen College of Electrical Engineering and Automation Fuzhou UniversityFuzhou 350108China Department of Electrical Engineering Yuan Ze UniversityTaiwan 32003China Fuzhou Power Supply Company of State Grid Fujian Electric Power Co. Ltd.Fuzhou 350009China

In resonant grounding systems,most single-phaseto-ground faults evolve from IAFs(Intermittent Arc Faults).Earlier detection of IAFs can facilitate fault *** work proposes a novel method based on machine learning for detecting IAFs in three ***,the feature of zero-sequence current is automatically extracted and selected by a newlydesigned FINET(“For IAFs,Neuron Elaboration Net”),instead of traditional feature selection based on time-frequency ***,data of the zero-sequence current divided by different time windows are successively input into the trained FINET.A proposed PSF(principal-subordinate factor)analyses the results obtained from FINET to improve anti-interference in the mentioned IAF detection *** using PSCAD/EMTDC software simulation data show the proposed method is feasible and highly *** addition,the detection result of on-site recorded data demonstrates the effectiveness of the proposed method in practical resonant grounding systems.

关键词： Resonant grounding distribution systems intermittent arc faults(IAFs)detection “For IAFs Neuron Elaboration Net”(FINET) principal-subordinate factor(PSF)

Photorheological fluids of azobenzene polymers for lubrication regulation

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Friction 2022年第7期10卷 1078-1090页

作者： Shuangxi TANG Shayu LI Liran MA yu tian State Key Laboratory of Tribology Department of Mechanical EngineeringTsinghua UniversityBeijing 100084China College of Chemistry and Chemical Engineering Chongqing UniversityChongqing 401331China

Fluid viscosity is ubiquitous property and is of practical importance in intelligent fluids,industrial lubrication,and pipeline fluid ***,there has been a surging interest in viscosity ***,we have developed a group of photorheological fluids by utilizing azobenzene polymers with a light-induced microstructure *** this work,a photosensitive polymer with 4,4'-bis-hydroxyazobenzene as the main chain was designed and synthesized as a pivotal functional *** sufficiently large structural difference under ultraviolet and near-infrared light makes it possible to regulate the viscosity of a polyethylene glycol *** viscosity of the photosensitive rheological fluids under ultraviolet light radiation is found to be up to 45.1%higher than that under near-infrared light *** explore this intelligent lubricating technology,the friction regulation of ceramic sliding bearings was investigated utilizing photosensitive rheological *** friction regulation with a ratio of up to 3.77 has been achieved by the alternative irradiation of near-infrared and ultraviolet light,which can be attributed to the differences in mechanical properties and molecular structures under ultraviolet and near-infrared light according to both simulations and *** photorheological fluids will have promising applications in controllable lubrication,intelligent rheological fluids,and photosensitive dampers.

关键词： photorheological fluids viscosity azobenzene polymer lubrication

Spin-polarized transport in a normal/ferromagnetic/normal zigzag graphene nanoribbon junction

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Chinese Physics B 2012年第1期21卷 433-437页

作者： tian Hong-yu Wang Jun Department of Physics Southeast UniversityNanjing 210096China

We investigate the spin-dependent electron transport in single and double normal/ferromagnetic/normal zigzag graphene nanoribbon （NG/FG/NG） junctions. The ferromagnetism in the FG region originates from the spontaneous magnetization of the zigzag graphene nanoribbon. It is shown that when the zigzag-chain number of the ribbon is even and only a single transverse mode is actived, the single NG/FG/NG junction can act as a spin polarizer and/or a spin analyzer because of the valley selection rule and the spin-exchange field in the FG, while the double NG/FG/NG/FG/NG junction exhibits a quantum switching effect, in which the on and the off states switch rapidly by varying the cross angle between two FG magnetizations. Our findings may shed light on the application of magnetized graphene nanoribbons to spintronics devices.

关键词： spontaneous magnetization zigzag graphene nanoribbon spin polarizer quantumswitching effect

Application and prospective of 3D printing in rock mechanics: A review

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International Journal of Minerals,Metallurgy and Materials 2021年第1期28卷 1-17页

作者： Yong-tao Gao tian-hua Wu yu Zhou Key Laboratory of Ministry for Efficient Mining and Safety of Metal Mines University of Science and Technology BeijingBeijing 100083China School of Civil and Resource Engineering University of Science and Technology BeijingBeijing 100083China

This review aims to discuss the application and development of three-dimensional printing(3DP) technology in the field of rock mechanics and the mechanical behaviors of 3D-printed specimens on the basis of various available printing *** review begins with a brief description of the concepts and principles associated with 3DP, and then systematically elaborates the five major applications of 3DP technology in the field of rock mechanics, namely, the preparation of rock(including pre-flawed rock) specimens, preparation of joints, preparation of geophysical models, reconstruction of complex rock structures, and performance of bridging experimental testing and numerical ***, the mechanical performance of 3D-printed specimens created using six different printing materials, such as polymers, resin,gypsum, sand, ceramics, and rock-like geological materials, is reviewed in ***, some improvements that can make these 3D-printed specimens close to natural rocks and some limitations of 3DP technology in the application of rock mechanics are *** prospects that are required to be investigated in the future are also ***, a brief summary is *** review suggests that 3DP technology, especially when integrated with other advanced technologies, such as computed tomography scanning and 3D scanning, has great potential in rock mechanics field.

关键词： three-dimensional printing(3DP) rock mechanics 3DP material rock analogue 3DP geotechnical model numerical simulation