检索结果-内蒙古大学图书馆

Cerebral cortex communications 2021年第1期2卷 tgaa091页

作者： Shihab Shamma Prachi Patel Shoutik Mukherjee Guilhem Marion Bahar Khalighinejad Cong Han Jose Herrero Stephan Bickel Ashesh Mehta Nima Mesgarani Department of Electrical and Computer Engineering Institute for Systems Research University of Maryland College Park MD 20742 USA. Laboratoire des Systèmes Perceptifs Department des Etudes Cognitive École Normale Supérieure PSL University 75005 Paris France. Department of Electrical Engineering Columbia University New York NY 10027 USA. Mortimer B Zuckerman Mind Brain Behavior Institute Columbia University New York NY USA. Neurosurgery Hofstra Northwell School of Medicine Manhasset NY USA. The Feinstein Institutes for Medical Research Manhasset NY 11030 USA.

Action and perception are closely linked in many behaviors necessitating a close coordination between sensory and motor neural processes so as to achieve a well-integrated smoothly evolving task performance. To investigate the detailed nature of these sensorimotor interactions, and their role in learning and executing the skilled motor task of speaking, we analyzed ECoG recordings of responses in the high-γ band (70-150 Hz) in human subjects while they listened to, spoke, or silently articulated speech. We found elaborate spectrotemporally modulated neural activity projecting in both "forward" (motor-to-sensory) and "inverse" directions between the higher-auditory and motor cortical regions engaged during speaking. Furthermore, mathematical simulations demonstrate a key role for the forward projection in "learning" to control the vocal tract, beyond its commonly postulated predictive role during execution. These results therefore offer a broader view of the functional role of the ubiquitous forward projection as an important ingredient in learning, rather than just control, of skilled sensorimotor tasks.

关键词： auditory cortex human ECoG mirror network sensorimotor interactions speech perception speech production vocal articulation

来源：评论

学校读者我要写书评

暂无评论

Remote Mobile Manipulation with the Centauro Robot: Full-body Telepresence and Autonomous Operator Assistance

arXiv

引用

arXiv 2019年

作者： Klamt, Tobias Schwarz, Max Lenz, Christian Baccelliere, Lorenzo Buongiorno, Domenico Cichon, Torben Guardo, Antonio Di Droeschel, David Gabardi, Massimiliano Kamedula, Malgorzata Kashiri, Navvab Laurenzi, Arturo Leonardis, Daniele Muratore, Luca Pavlichenko, Dmytro Periyasamy, Arul Selvam Rodriguez, Diego Solazzi, Massimiliano Frisoli, Antonio Gustmann, Michael Roßmann, Jürgen Süss, Uwe Tsagarakis, Nikos G. Behnke, Sven Autonomous Intelligent Systems University of Bonn Bonn Germany PERCRO Laboratory TeCIP Institute Scuola Superiore Sant’Anna Pisa Italy Man-Machine Interaction RWTH Aachen University Aachen Germany Department of Advanced Robotics Italian Institute of Technology Genoa Italy Kerntechnische Hilfsdienst GmbH Karlsruhe Germany School of Electrical and Electronic Engineering University of Manchester United Kingdom

Solving mobile manipulation tasks in inaccessible and dangerous environments is an important application of robots to support humans. Example domains are construction and maintenance of manned and unmanned stations on the moon and other planets. Suitable platforms require flexible and robust hardware, a locomotion approach that allows for navigating a wide variety of terrains, dexterous manipulation capabilities, and respective user interfaces. We present the CENTAURO system which has been designed for these requirements and consists of the Centauro robot and a set of advanced operator interfaces with complementary strength enabling the system to solve a wide range of realistic mobile manipulation tasks. The robot possesses a centaur-like body plan and is driven by torque-controlled compliant actuators. Four articulated legs ending in steerable wheels allow for omnidirectional driving as well as for making steps. An anthropomorphic upper body with two arms ending in five-finger hands enables human-like manipulation. The robot perceives its environment through a suite of multimodal sensors. The resulting platform complexity goes beyond the complexity of most known systems which puts the focus on a suitable operator interface. An operator can control the robot through a telepresence suit, which allows for flexibly solving a large variety of mobile manipulation tasks. Locomotion and manipulation functionalities on different levels of autonomy support the operation. The proposed user interfaces enable solving a wide variety of tasks without previous task-specific training. The integrated system is evaluated in numerous teleoperated experiments that are described along with lessons learned. Copyright © 2019, The Authors. All rights reserved.

关键词： Visual communication

来源：评论

学校读者我要写书评

暂无评论

Grid Map Guided Indoor 3D Reconstruction for Mobile Robots with RGB-D Sensors

Grid Map Guided Indoor 3D Reconstruction for Mobile Robots w...

引用

IEEE/ASME (AIM) International Conference on Advanced Intelligent Mechatronics

作者： Boyu Zhang Xuebo Zhang Xiang Chen Yongchun Fang Institute of Robotics and Automatic Information System (IRAIS) Nankai University Tianjin China Department of Electrical and Computer Engineering University of Windsor Ontario Canada

This paper presents a novel automatic indoor three-dimensional (3D) scene reconstruction approach which is guided by a beforehand two-dimensional (2D) grid map. The proposed system collects only a few images with a RGB-D sensor (Kinect v2) at poses precalculated by the grid map to reconstruct a complete model of the indoor environment. To remove noises result from mirror reflection, a wall detection based cloud filtering method is proposed as preprocessing for the point clouds. Then, robot location information provided by a laser scanner is utilized as an initial guess of the point cloud registration which uses Iterative Closest Point (ICP). Finally, to maintain global consistency and improve the overall accuracy, a graph optimization strategy is applied. Experimental results are provided to show the effectiveness of the proposed approach.

关键词： Three-dimensional displays Robots Sensors Mirrors Cameras Image reconstruction Indoor environments

来源：评论

学校读者我要写书评

暂无评论

Critical current density in advanced superconductors

引用

Progress in Materials Science 2026年 155卷

作者： H.S. Ruiz J. Hänisch M. Polichetti A. Galluzzi L. Gozzelino D. Torsello S. Milošević-Govedarović J. Grbović-Novaković O.V. Dobrovolskiy W. Lang G. Grimaldi A. Crisan P. Badica A.M. Ionescu P. Cayado R. Willa B. Barbiellini S. Eley A. Badía–Majós School of Engineering and Space Park Leicester University of Leicester University Rd Leicester LE1 7RH United Kingdom Karlsruhe Institute of Technology Institute for Technical Physics Hermann-von-Helmholtz-Platz 1 Eggenstein-Leopoldshafen 76344 Germany Department of Physics “E.R. Caianiello” University of Salerno via Giovanni Paolo II 132 Fisciano (SA) 84084 Italy Consiglio Nazionale delle Ricerche CNR-SPIN c/o Università di Salerno- via Giovanni Paolo II 132 Fisciano (SA) 84084 Italy Department of Applied Science and Technology Politecnico di Torino Corso Duca degli Abruzzi 24 Torino 10129 Italy Istituto Nazionale di Fisica Nucleare Sezione di Torino Via P. Giuria 1 Torino 10125 Italy University of Belgrade Vinča Institute of Nuclear Sciences National Institute of Republic of Serbia Centre of Excellence for Hydrogen and Renewable Energy - CONVINCE Mike Petrovića Alasa 12-14 Belgrade 11000 Serbia Cryogenic Quantum Electronics EMG and LENA Technische Universität Braunschweig Hans-Sommer-Str. 66 Braunschweig 38106 Germany Faculty of Physics University of Vienna Boltzmanngasse 5 Vienna 1090 Austria National Institute of Materials Physics 405A Atomistilor Str. Magurele 077125 Romania University of Geneva Department of Quantum Matter Physics (DQMP) Quai Ernest-Ansermet 24 Geneva 1211 Switzerland Departamento de Física Universidad de Oviedo Campus Llamaquique C/ Calvo Sotelo s/n Oviedo 33007 Spain Institute for Theoretical Condensed Matter Physics Karlsruhe Institute of Technology Wolfgang-Gaede Strasse 1 Karlsruhe D-76131 Germany Institute of Systems Engineering School of Engineering HES-SO Valais-Wallis rue de l’Industrie 23 Sion CH-1950 Switzerland Department of Physics School of Engineering Science LUT University Yliopistonkatu 34 Lappeenranta FI-53850 Finland Quantum Materials and Sensing Institute Department of Physics Northeastern University 147 S Bedford St Burlington MA 01803 USA Department of Physics Colorado School of Mines Golden Co

This review paper delves into the concept of critical current density ( J c ) in high-temperature superconductors (HTS) across macroscopic, mesoscopic, and microscopic perspectives. Through this exploration, a comprehensive range of connections is unveiled aiming to foster advancements in the physics, materials science, and the engineering of applied superconductors. Beginning with the macroscopic interpretation of J c as a central material law, the review traces its development from C.P. Bean’s foundational work to modern extensions. Mesoscopic challenges in understanding vortex dynamics and their coherence with thermodynamic anisotropy regimes are addressed, underscoring the importance of understanding the limitations and corrections implicit in the macroscopic measurement of J c , linked with mesoscopic phenomena such as irradiation effects, defect manipulation, and vortex interactions. The transition to supercritical current densities is also discussed, detailing the superconductor behavior beyond critical thresholds with a focus on flux-flow instability regimes relevant to fault current limiters and fusion energy magnets. Enhancing J c through tailored material microstructures, engineered pinning centers, grain boundary manipulation, and controlled doping is explored, along with radiation techniques and their impact on large-scale energy systems. Emphasizing the critical role of J c , this review focuses on its physical optimization and engineering manipulation, highlighting its significance across diverse sectors.

关键词： Superconductivity Superconducting materials Critical current density Vortices High temperature superconductors Flux flow instabilities Flux creep Flux pinning Vortex–defect interactions

来源：评论

学校读者我要写书评

暂无评论

Enteric & 3D-printed hybrid package for sampling in digestive regions

Enteric & 3D-printed hybrid package for sampling in digestiv...

引用

2018 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2018

作者： Banis, G.E. Beardslee, L.A. Stine, J.M. Ghodssi, R. Institute for Systems Research University of Maryland College ParkMD20742 United States Department of Electrical and Computer Engineering University of Maryland College ParkMD20742 United States Fischell Department of Bioengineering University of Maryland College ParkMD20742 United States

ISBN: (纸本)9781940470030

We present a packaging concept for an ingestible sensing capsule, which utilizes biodegradable polymers to target the sensors to specific areas of the gut. Interdigitated electrodes (IDE) are inserted into 3D-printed capsules with embedded gratings that are filled with pharmaceutical polymers tuned to dissolve at a specific pH threshold. Sensors, housed within a 3D-printed package accessible only by the gratings, are connected to a microcontroller capable of transmitting data to a smartphone via Bluetooth Low-Energy (BLE). The system is tested with varying amounts and types of enteric coatings over the gratings, used toward optimizing control over timed polymer dissolution. This represents a minimally-invasive strategy toward in situ sampling and analysis at pH-targeted locations in the gastrointestinal (GI) tract. © 2016 TRF.

关键词： Biodegradable polymers

来源：评论

学校读者我要写书评

暂无评论

A Low-Symmetry Copper Benzenehexathiol Coordination Polymer with In-Plane electrical Anisotropy

引用

Angewandte Chemie 2025年

作者： Dr. Zhiyong Wang Dr. Hio-Ieng Un Tsai-Jung Liu Dr. Baokun Liang Dr. Miroslav Polozij Dr. Mike Hambsch Jonas F. Pöhls Prof. R. Thomas Weitz Prof. Stefan C. B. Mannsfeld Prof. Ute Kaiser Prof. Thomas Heine Prof. Henning Sirringhaus Prof. Xinliang Feng Prof. Renhao Dong Max Planck Institute of Microstructure Physics Weinberg 2 06120 Halle (Saale) Germany Center for Advancing Electronics Dresden (cfaed) Faculty of Chemistry and Food Chemistry Dresden University of Technology 01062 Dresden Germany Optoelectronics Group Cavendish Laboratory University of Cambridge JJ Thomson Avenue Cambridge CB3 0HE UK Ulm University 89081 Ulm Germany Helmholtz-Zentrum Dresden-Rossendorf HZDR Bautzner Landstr. 400 01328 Dresden Germany Center for Advanced Systems Understanding CASUS Conrad-Schiedt-Straße 20 02826 Görlitz Germany Center for Advancing Electronics Dresden (cfaed) Faculty of Electrical and Computer Engineering Dresden University of Technology 01062 Dresden Germany First Institute of Physics Georg August University of Göttingen 37077 Göttingen Germany Department of Chemistry The University of Hong Kong Hong Kong 999077 China Materials Innovation Institute for Life Sciences and Energy (MILES) HKU-SIRI Shenzhen 518048 China

electrically conductive coordination polymers (ECCPs), particularly those incorporating benzenehexathiol (BHT) ligands, are emerging as a distinctive class of electronic materials with tunable semiconducting and metallic properties. However, the exploration of novel ECCPs with low-symmetry structures and electrical anisotropy remains under development. Here, we report the on-water surface synthesis of a novel ECCP, namely Cu 5 BHT, which exhibits a low-symmetry structure and unique in-plane electrical anisotropy that differs from the well-known Cu 3 BHT phase. Utilizing imaging and diffraction techniques, we elucidate the unit cell and crystal structure of Cu 5 BHT, revealing an asymmetric arrangement of the kagome resembling lattice connected by two different secondary building units: square planar CuS 4 and non-planar Cu 2 S 4 . Theoretical studies indicate that Cu 5 BHT is metallic and exhibits in-plane electrical anisotropy due to the structure arranged in interconnected well-conducting CuS 4 chains and less-conducting Cu 2 S 4 slabs oriented along single crystal direction. Single-crystal electrical measurements confirm a metallic character characterized by the increase of conductance upon cooling. Notably, the measured conductance along different crystal directions within the ab plane unambiguously reveals a significant anisotropy, with an anisotropic factor reaching ~8. This work demonstrates a novel low-symmetry ECCP and highlights its potential for achieving in-plane electrical anisotropy.

关键词： electrically conductive coordination polymers metallic kagome lattice low-symmetry structure in-plane electrical anisotropy

来源：评论

学校读者我要写书评

暂无评论

Magnetic-visual sensor fusion-based dense 3D reconstruction and localization for endoscopic capsule robots

arXiv

引用

arXiv 2018年

作者： Turan, Mehmet Almalioglu, Yasin Ornek, Evin Pinar Araujo, Helder Yanik, Mehmet Fatih Sitti, Metin Physical Intelligence Department Max Planck Institute for Intelligent Systems Germany Computer Science Department University of Oxford Oxford United Kingdom Informatics Department Technical University of Muenich Germany Institute for Systems and Robotics University of Coimbra Portugal Department of Information Technology and Electrical Engineering Zurich Switzerland

Reliable and real-time 3D reconstruction and localization functionality is a crucial prerequisite for the navigation of actively controlled capsule endoscopic robots as an emerging, minimally invasive diagnostic and therapeutic technology for use in the gastrointestinal (GI) tract. In this study, we propose a fully dense, non-rigidly deformable, strictly realtime, intraoperative map fusion approach for actively controlled endoscopic capsule robot applications which combines magnetic and vision-based localization, with non-rigid deformations based frame-to-model map fusion. The performance of the proposed method is demonstrated using four different ex-vivo porcine stomach models. Across different trajectories of varying speed and complexity, and four different endoscopic cameras, the root mean square surface reconstruction errors 1.58 to 2.17 cm. Copyright © 2018, The Authors. All rights reserved.

关键词： Robot applications

来源：评论

学校读者我要写书评

暂无评论

Correction: Core–shell defective TiO 2 nanoparticles by femtosecond laser irradiation with enhanced photocatalytic performance

引用

Materials Advances 2023年第5期4卷 1403-1403页

作者： Bersu Bastug Azer Ahmet Gulsaran Joel R. Pennings Reza Karimi Aydin Ashrafi Belgabad Alexander H. Xu Liena Zaidan Samed Kocer Joseph Sanderson Michal Bajcsy Michael A. Pope Mustafa Yavuz Department of Mechanical and Mechatronics Engineering University of Waterloo 200 University Ave. West Waterloo ON N2L 3G1 Canada bbastuga@uwaterloo.ca myavuz@uwaterloo.ca Waterloo Institute for Nanotechnology (WIN) University of Waterloo 200 University Ave. West Waterloo ON N2L 3G1 Canada Department of Physics and Astronomy University of Waterloo 200 University Ave. West Waterloo ON N2L 3G1 Canada Department of Physics and Energy Engineering Amirkabir University of Technology (Tehran Polytechnic) P.O. Box 15875-4413 Tehran Iran Department of Nanotechnology Engineering University of Waterloo 200 University Ave. West Waterloo ON N2L 3G1 Canada Department of Electrical and Computer Engineering University of Waterloo 200 University Ave. West Waterloo ON N2L 3G1 Canada Department of Systems Design Engineering University of Waterloo 200 University Ave. West Waterloo ON N2L 3G1 Canada Institute for Quantum Computing University of Waterloo 200 University Ave. West Waterloo ON N2L 3G1 Canada Department of Chemical Engineering University of Waterloo 200 University Ave. West Waterloo ON N2L 3G1 Canada

Correction for ‘Core–shell defective TiO 2 nanoparticles by femtosecond laser irradiation with enhanced photocatalytic performance’ by Bersu Bastug Azer et al. , Mater. Adv. , 2023, https://***/10.1039/d3ma00019b .

关键词：

来源：评论

学校读者我要写书评

暂无评论

Data-driven (Bilinear) identification and reduction

引用

PAMM 2021年第S1期20卷

作者： Dimitrios S. Karachalios Ion Victor Gosea Athanasios C. Antoulas Max Planck Institute for Dynamics of Complex Technical Systems Data-Driven System Reduction and Identification (DRI) group Sandtorstraße 1 Magdeburg 39106 Max Planck Institute for Dynamics of Complex Technical Systems Data-Driven System Reduction and Identification (DRI) group Sandtorstraße 1 Magdeburg 39106 Rice University Houston Electrical and Computer Engineering Department 6100 Main St. Houston TX 77005 Baylor College of Medicine 1 Baylor Plaza Houston TX 77030

Identifying dynamical systems from measured data is an important step towards accurate modeling and control. Model order reduction (MOR) constitutes a class of methods that can be used to replace large, complex models of dynamical processes with simpler, smaller models. The reduced-order models (ROMs) can be then used for further tasks such as control, design, and simulation. One typical approach for projection-based model reduction for both linear and nonlinear dynamical systems is by employing interpolation. Projection-based methods require access to the internal dynamics of the system which is not always available. The aim here is to compute ROMs without having access to the internal dynamics, by means of a realization independent method. The proposed methodology will fall into the broad category of data-driven approaches. The method under consideration, which will be referred to as the Loewner framework (LF), was originally introduced by the third author. Based on data, LF identifies state-space models in a direct way. In the original setup, the framework relies on compressing the full data set to extract dominant features and, at the same time, to eliminate the inherent redundancies. In the broader class of nonlinear control systems, the LF has been already extended to certain classes with a special structure such as quadratic or bilinear systems. The LF in combination with Volterra series-(VS) offers a non-intrusive approximation method that is capable of identifying bilinear models from input-output time-domain measurements. This method uses harmonic inputs which establish a natural way for data acquisition. The Fourier transform associates these measurements with the derived generalized frequency response functions GFRFs and the LF makes the connection with system theory. In the linear case, the LF associates the so-called S-parameters with the linear transfer function by interpolating in the frequency domain. The goal of the proposed method is to extend ide

关键词：

来源：评论

学校读者我要写书评

暂无评论

A Situation-Aware Collision Avoidance Strategy for Car-Following

引用

IEEE/CAA Journal of Automatica Sinica 2018年第5期5卷 1012-1016页

作者： Li Li Fellow IEEE Xinyu Peng Fei-Yue Wang ieee department of automation bnristtsinghua universityBeijing l00084China the department of automation tsinghua universityBeijing l00084China state key laboratory of management and control for complex systems institute of automationchinese academy of sciencesBeijing 100080China the driver cognition and automated driving laboratory university of waterlooWaterloo N2L 3GlCanada the department of electrical and computer engineering purdue school of engineering and technologyindiana university-purdue university indianapolisIndiana 46202-5l32USA

Abstract--In this paper, we discuss how to develop an appropriate collision avoidance strategy for car-following. This strategy aims to keep a good balance between traffic safety and efficiency while also taking into consideration the unavoidable uncertainty of position/speed perception/measurement of vehicles and other drivers. Both theoretical analysis and numerical testing results are provided to show the effectiveness of the proposed strategy. Index Terms--Collision avoidance, safety, traffic efficiency, uncertainty.

关键词： Collision avoidance safety traffic efficiency uncertainty

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：