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An approach to the capsule endoscopic robot with active drive motion

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2011年第3期12卷 223-231页

作者： Da-qiang gu yong ZHOU Department of Mechanical Engineering Zhejiang University Hangzhou 310027 China

Commercialized capsule-type endoscopes move passively by peristaltic waves (and gravity),which makes it difficult for doctors to diagnose the areas of interest more thoroughly and *** resolve this problem of passivity,it is necessary to find a special locomotion principle,which fits the gastrointestinal (GI) *** this paper,a legged locomotive mechanism with shape memory alloy (SMA) actuation based on the peristaltic principle is proposed,and then the structure of the locomotion mechanism is *** on the preliminary results,the design,modeling,and fabrication of an SMA microactuation concept for application in an endoscopic capsule are given,as well as the SMA spring and legged component design,which is the core section of the system *** used the pseudo-rigid-body model (PRBM) to analyze nonlinear and large deflections of the SMA legged ***,a prototype endoscope with an SMA spring and six legged components was designed and *** is 15 mm in diameter and 33 mm in total length,with a hollow space to house other parts needed for endoscopy such as a camera,a radio frequency (RF) module,and *** testing,the locomotive mechanism was effective in a plastic tube environment.

关键词： Capsular endoscopy Shape memory alloy (SMA) Microactuation Locomotion

Cortical Mechanisms of Multisensory Linear Self-motion Perception

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Neuroscience Bulletin 2023年第1期39卷 125-137页

作者： Luxin Zhou yong gu CAS Center for Excellence in Brain Science and Intelligence Technology Institute of NeuroscienceChinese Academy of SciencesShanghai200031China University of Chinese Academy of Sciences Beijing100049China

Accurate self-motion perception,which is critical for organisms to survive,is a process involving multiple sensory *** two most powerful cues are visual(optic flow)and vestibular(inertial motion).Psychophysical studies have indicated that humans and nonhuman primates integrate the two cues to improve the estimation of self-motion direction,often in a statistically Bayesian-optimal *** the last decade,single-unit recordings in awake,behaving animals have provided valuable neurophysiological data with a high spatial and temporal resolution,giving insight into possible neural mechanisms underlying multisensory self-motion ***,we review these findings,along with new evidence from the most recent studies focusing on the temporal dynamics of signals in different *** show that,in light of new data,conventional thoughts about the cortical mechanisms underlying visuo-vestibular integration for linear self-motion are *** propose that different temporal component signals may mediate different functions,a possibility that requires future studies.

关键词： Multisensory integration Self-motion perception Vestibular Optic flow

Unveiling Dynamic System Strategies for Multisensory Processing: From Neuronal Fixed-Criterion Integration to Population Bayesian Inference

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Research 2023年第2期2022卷 81-100页

作者： Jiawei Zhang yong gu Aihua Chen Yuguo Yu State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science Shanghai Artificial Intelligence LaboratoryResearch Institute of Intelligent and Complex Systems and Institute of Science and Technology for Brain-Inspired IntelligenceHuman Phenome InstituteShanghai 200433China Key Laboratory of Primate Neurobiology Institute of NeuroscienceCAS Center for Excellence in Brain Science and Intelligence TechnologyChinese Academy of SciencesShanghaiChina Key Laboratory of Brain Functional Genomics(Ministry of Education) East China Normal University3663 Zhongshan Road N.Shanghai 200062China

Multisensory processing is of vital importance for survival in the external *** circuits can both integrate and separate visual and vestibular senses to infer self-motion and the motion of other ***,it is largely debated how multisensory brain regions process such multisensory information and whether they follow the Bayesian strategy in this process.

关键词： Integration Fixed Criterion

Corrosion risk analysis of tube-and-shell heat exchangers and design of outlet temperature control system

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Petroleum Science 2021年第4期18卷 1219-1229页

作者： Hao-Zhe Jin yong gu guo-Fu Ou The Institute of Flow-Induced Corrosion Zhejiang Sci-tech UniversityHangzhou310000ZhejiangChina Institute of Flow Induced Corrosion and Intelligent Prevention and Control Changzhou UniversityChangzhou213000JiangsuChina

This study deals with the high-risk shell-and-tube heat exchangers in the effluent system of hydrogenation reaction of the petrochemical *** process of hydroprocessing reactor effluent system is simulated in Aspen Plus to study the distribution of corrosive medium in the three phases of oil,gas and *** least-squares method is utilized to calculate the ammonium salt crystallization ***,the heat exchanger with risk of ammonium salt crystal corrosion is *** mathematical modeling of the heat exchanger is established to determine the transfer function.A temperature control system with proportional integral derivative(PID)control of the heat exchanger outlet is designed,and fuzzy logic is used to implement self-tuning of PID *** MATLAB simulation,the results show the control system can achieve rapid control of the heat exchanger outlet temperature.

关键词： Shell-and-tube heat exchanger Corrosion risk Dynamic model Fuzzy logic control PID control

Existence and Nonexistence of Global Positive Solutions for a Weakly Coupled P-Laplacian System

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Acta Mathematicae Applicatae Sinica 2013年第3期29卷 541-554页

作者： Xian-zhong ZENG Zhen-hai LI yong-geng gu School of Mathematics and Computing Science Hunan University of Science and Technology College of Science Guangxi University for Nationalities Department of Mathematics Hunan Normal University

In this paper, we deal with a weakly coupled evolution P-Laplacian system with inhomogeneous terms. We obtain a critical criterion concerning existence and nonexistence of its global positive solutions. Such a criterion is different from that of the weakly coupled evolution P-Laplacian system with homogeneous terms. Further, we demonstrate existence and nonexistence of its global positive solutions.

关键词： the evolution P-Laplacian system inhomogeneous terms blow-up global existence

Deterministic Three-Copy Entanglement Concentration of Photons through Direct Sum Extension and Auxiliary Degrees of Freedom

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Chinese Physics Letters 2013年第7期30卷 13-16页

作者： ZHAO Jie LI Wen-Dong gu yong-Jian Department of Physics Ocean University of ChinaQingdao 266100

The schematic optical realization of deterministic multicopy(three-copy)entanglement concentration under local operations and classical communication(LOCC)is presented,which can resort to the linear optical elements,controlled-NOT gate that uses weak cross-Kerr nonlinearity effect and entangled qudits with different degrees of *** concentration is based on Nielsen's theorem,which in principle quantifies the unit success *** addition,the required positive operator-valued measurement(POVM)is implemented through direct sum extension,because the least number of ancillary dimensions is *** construction of POVM is systematically formulated,which results in the feasibility to generate the protocol to n-copy(n>3)cases.

关键词： dimensions valued realization

Existence and uniqueness of positive solutions of semilinear elliptic equations

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Science China Mathematics 2007年第8期50卷 1141-1156页

作者： Qiu-yi DAI Yu-xia FU yong-geng gu Department of Mathematics Hunan Normal UniversityChangsha 410081China Department of Applied Mathematics Hunan UniversityChangsha 410082China

This paper is devoted to the study of existence,uniqueness and non-degeneracy of positive solutions of semi-linear elliptic equations.A necessary and sufficient condition for the existence of positive solutions to problems is *** prove that if the uniqueness and non-degeneracy results are valid for positive solutions of a class of semi-linear elliptic equations,then they are still valid when one perturbs the differential operator a little *** consequences,some uniqueness results of positive solutions under the domain perturbation are also obtained.

关键词： semilinear elliptic equation positive solution existence uniqueness nondegeneracy 35J65

Bi-level Planning Model for NIMBY Facility Location Problem 36

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Bi-level Planning Model for NIMBY Facility Location Problem

Probabilistic Teleportation of an Arbitrary Two-particle State

第36届中国控制会议

作者： yong gu Lie Zhang Zhengdu Wang Yangyang Zheng School of Logistics Engineering Wuhan University of Technology

ISBN: (纸本)9781538629185

To explore NIMBY facility location problem,its externality should be taken full account *** this paper,we took garbage power plant as an example,introduced a reasonable compensation mechanism to eliminate the externality of garbage power plant and established an exact location model with external ***,considering the commercial characteristics and competition relationship of garbage power plant,we established a bi-level planning model of garbage power plant location with both externality and *** calculated and validated the model by using Wuhan city actual case data.

关键词： NIMBY Facility Garbage Power Plant Bi-level Planning Externality Compensation Mechanism Competition

来源： cnki会议评论

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Chinese Physics Letters 2001年第12期18卷 1543-1545页

作者： gu yong-Jian ZHENG Yi-Zhuang guO guang-Can Laboratory of Quantum Communication and Quantum Computation University of Science and Technology of ChinaHefei 230026 Department of Physics Weifang UniversityWeifang 261043 Department of Physics Whenzhou Teachers CollegeWenzhou 325027

A scheme for the teleportation of an arbitrary two-particle state via two non-maximally entangled particle pairsis proposed. We show that teleportation can be successfully realized with a certain probability if the receiveradopts an appropriate unitary-reduction strategy. A specific strategy is provided in detail The probability of successful teleportation is determined by the smaller coefficients of the two entangled pairs.

关键词： particle unitary arbitrary