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2015 International Conference on Future Computational Technologies (ICFCT’2015);International Conference on Advances in Chemical, Biological & Environmental engineering (ACBEE);International Conference on Urban Planning, Transport and Construction engineering (ICUPTCE’15)

作者： S.Meenatchisundaram S.M.Kulkarni Somashekara Bhat Department of Instrumentation and Control Engineering Manipal Institute of Technology Department of Mechanical Engineering National Institute of Technology Department of Electronics and Communication Engineering Manipal Institute of Technology

Piezoresistive micro pressure sensors are widely used for pressure *** are a few design issues need to be addressed like temperature sensitivity,placement of piezoresistive element on the membrane,design of element size,*** better sensitivity the length of piezoresistor needs to be increased whereas the thickness needs to be *** a square membrane,the maximum stress value occurs at the center of the edge and decreases rapidly towards the center of the *** in length of the piezoresistor beyond a limit will develop huge design error,since the localized stress variations are not considered in the *** solution could be breaking down the resistance into smaller pieces and conne cting them in series and positioning them in the maximum stress *** paper discusses about the design of such a piezoresistive micro pressure sensor with optimized position placement and element ***,a square diaphragm piezoresistive pressure using classical governing equations is ***,three of the physics such as structural mechanics,piezoresistive physics and electrical physics are involved in the design;Comsol Multiphysics 4.3 is used to make a comparative study of the model with analytical *** stress variation over the diaphragm is analyzed and the length of the piezoresistive element is designed by restricting the element in the maximum stress region.A Matlab code is written to find the optimum element size,and number of elements to be connected in *** material properties,dimensions of the membrane,initial resistance and sheet resistance of the piezoresistor are considered as variables and obtained as user inputs.

关键词： micro pressure sensors piezoresistive design Comsol Multiphysics Position optimization

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Estimation of the orientation of vehicles in high-resolution radar images

Estimation of the orientation of vehicles in high-resolution...

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2015 IEEE MTT-S International Conference on Microwaves for Intelligent Mobility, ICMIM 2015

作者： Roos, Fabian Kellner, Dominik Klappstein, Jens Dickmann, Juergen Dietmayer, Klaus Müller-Glaser, Klaus D. Waldschmidt, Christian Institute of Microwave Techniques University of Ulm Ulm89081 Germany Institute of Measurement Control and Microtechnology University of Ulm Ulm89081 Germany Daimler AG Group Research and Advanced Engineering Ulm89081 Germany Institute for Information Processing Technologies Karlsruhe Institute of Technology Karlsruhe76049 Germany

ISBN: (纸本)9781479972159

The availability of high-resolution image radars allows estimating the orientation of vehicles from a single measurement without temporal filtering. This gives the opportunity to react even faster to certain critical traffic scenes. This paper presents an approach for estimating the orientation of a vehicle. The orientated bounding box algorithm known from literature is adapted to this end and a quality function is introduced to choose the optimal bounding box. In addition, a brute-force approach for determining the best possible outcome is presented. © 2015 IEEE.

关键词： Vehicles

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Developing a method to assess noise reduction of firearm suppressors for small-caliber weapons

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Proceedings of Meetings on Acoustics 2018年第1期33卷

作者： William J. Murphy Adam R. Campbell Gregory A. Flamme Stephen M. Tasko James E. Lankford Deanna K. Meinke Donald S. Finan Michael Stewart Edward L. Zechmann 1Division of Applied Research and Technology Centers for Disease Control and Prevention National Institute for Occupational Safety and Health Cincinnati OH 45226-1998 USA wjm4@cdc.gov 2National Institute for Occupational Safety and Health Cincinnati OH USA acampb311@*** 3Stephenson and Stephenson Research and Consulting LLC Forest Grove OR USA gflamme@*** 4Speech Language and Hearing Sciences Western Michigan University Kalamazoo MI USA stephen.tasko@wmich.edu 5School of Allied Health and Communication Disorders Northern Illinois University Dekalb IL USA jelank@niu.edu 6Audiology and Speech-Language Sciences University of Northern Colorado Greeley CO USA Deanna.Meinke@unco.edu Donald.Finan@unco.edu 7Communication Sciences and Disorders Central Michigan University Mount Pleasant MI USA stewa1mg@cmich.edu 8Division of Field Studies and Engineering National Institute for Occupational Safety and Health Cincinnati OH USA cri6@cdc.gov

Firearm suppressors reduce the muzzle blast of a gunshot through a series of baffles contained in a canister. The American National Standards institute has no firearm suppressor testing standards. A recent NATO test standard, AEP 4875, ignores the contribution of the ground reflection at the shooter’s ears and is not representative of how firearms are typically fired. The aim of this study is to commence empirical development of a standard to assess the noise reduction of firearm suppressors for hearing conservation purposes. Fourteen firearms with and without a suppressor were evaluated with high velocity and low velocity (subsonic) ammunition. Twelve microphones were positioned in a ring 3 meters from the muzzle with 30° spacing and 1.5 meters above the ground. One microphone was positioned at 1 meter to the left of the muzzle and two microphones were positioned at 15 centimeters from the right and left ears of the firearm operator. The suppressors were effective in reducing the peak sound pressure levels between 3 and 28 dB and A-weighted equivalent energy (LAEQ) between 2 and 24 dB.

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26th Annual Computational Neuroscience Meeting (CNS*2017): Part 3 Antwerp, Belgium. 15-20 July 2017 Abstracts

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BMC NEUROSCIENCE 2017年第SUPPL 1期18卷 95-176页

作者： [Anonymous] Department of Neuroscience Yale University New Haven CT 06520 USA Department Physiology & Pharmacology SUNY Downstate Brooklyn NY 11203 USA NYU School of Engineering 6 MetroTech Center Brooklyn NY 11201 USA Departament de Matemàtica Aplicada Universitat Politècnica de Catalunya Barcelona 08028 Spain Institut de Neurobiologie de la Méditerrannée (INMED) INSERM UMR901 Aix-Marseille Univ Marseille France Center of Neural Science New York University New York NY USA Aix-Marseille Univ INSERM INS Inst Neurosci Syst Marseille France Laboratoire de Physique Théorique et Modélisation CNRS UMR 8089 Université de Cergy-Pontoise 95300 Cergy-Pontoise Cedex France Department of Mathematics and Computer Science ENSAT Abdelmalek Essaadi’s University Tangier Morocco Laboratory of Natural Computation Department of Information and Electrical Engineering and Applied Mathematics University of Salerno 84084 Fisciano SA Italy Department of Medicine University of Salerno 84083 Lancusi SA Italy Dipartimento di Fisica Università degli Studi Aldo Moro Bari and INFN Sezione Di Bari Italy Data Analysis Department Ghent University Ghent Belgium Coma Science Group University of Liège Liège Belgium Cruces Hospital and Ikerbasque Research Center Bilbao Spain BIOtech Department of Industrial Engineering University of Trento and IRCS-PAT FBK 38010 Trento Italy Department of Data Analysis Ghent University Ghent 9000 Belgium The Wellcome Trust Centre for Neuroimaging University College London London WC1N 3BG UK Department of Electronic Engineering NED University of Engineering and Technology Karachi Pakistan Blue Brain Project École Polytechnique Fédérale de Lausanne Lausanne Switzerland Departement of Mathematics Swansea University Swansea Wales UK Laboratory for Topology and Neuroscience at the Brain Mind Institute École polytechnique fédérale de Lausanne Lausanne Switzerland Institute of Mathematics University of Aberdeen Aberdeen Scotland UK Department of Integrativ

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The blind adaptive anti-jamming instrument based on array technology for the weak GNSS signal

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International Journal of Earth Sciences and engineering 2015年第6期8卷 2889-2896页

作者： Zhang, Yanjun Li, Ping National Key Laboratory of Mechatronic Engineering and Control Beijing Institute of Technology China National Key Laboratory for Electronic Measurement Technology North University of China Taiyuan China

The article introduced the implementation of the anti-jam technology based on the adaptive arrays theory for the GNSS. On the condition that the direction of arrival of the expected satellite signal is unknown, the blind adaptive algorithm is recommended. Based on the space-time structure, the algorithm is applied in the hardware platform successfully. Finally, the effectiveness is verified by simulation and test data. © 2015 CAFET-INNOVA TECHNICAL SOCIETY. All rights reserved.

关键词： Adaptive algorithms

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The Use of Direct Georeferencing in Aerial Photogrammetry with Micro UAV

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IFAC-PapersOnLine 2015年第4期48卷 380-385页

作者： Petr Gabrlik Department of Control and Instrumentation Faculty of Electrical Engineering and Communication Brno University of Technology Brno Czech Republic Central European Institute of Technology Brno University of Technology Brno Czech Republic

This paper deals with the practical use of the direct georeferencing technique which has applying in the area of aerial photogrammetry and digital surface model (DSM) creation. Todays micro unmanned aerial vehicles (UAVs) are able to carry high resolution camera, global navigation satellite system (GNSS) receiver with up to 1 centimeter position accuracy and inertial measurement unit (IMU) based on MEMS technology. These sensors are fundamental for the direct georeferencing. Some types of micro UAVs platforms and aerial mapping methods are descibed at the begening. Special attention is paid to geometric method called triangulation witch forms the basis of the technique. Practical photogrammetric measurement with simulated aerial photographic data is described in the second part of the paper. For this purposes low- cost commercial camera as a image sensor and high-accurate real time kinematic (RTK) GNSS receiver as a positon sensor was used.

关键词： direct georeferencing aerial triangulation aerial photogrammetry quadrotor UAV GNSS IMU

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The research and realization of the joint anti-jamming technology for the satellite navigation signal

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International Journal of Earth Sciences and engineering 2015年第2期8卷 944-951页

作者： Zhang, Yanjun Li, Ping National Key Laboratory of Mechatronic Engineering and Control Beijing Institute of Technology Beijing China National Key Laboratory for Electronic Measurement Technology North University of China Taiyuan China

The Beidou navigation satellite system has become a popular choice in many fields for its special characteristics. In the presence of the blanket jamming, it becomes very important to maintain the normal work by the algorithm. Therefore, the joint anti-jamming system is designed for the different types of interferences. Based on the adaptive notch filter and the multistage Wiener filter, the proposed technology has been successfully applied in practice. Finally, the effectiveness is verified by the test data and results. © 2015 CAFET-INNOVA TECHNICAL SOCIETY. All rights reserved.

关键词： Bandpass filters

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Curvature-based curb detection method in urban environments using stereo and laser

Curvature-based curb detection method in urban environments ...

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IEEE Symposium on Intelligent Vehicle

作者： C. Fernández D. F. Llorca C. Stiller M. A. Sotelo Computer Engineering Department University of Al-cala Madrid Spain Institute of Measurement and Control Systems at Karlsruhe Institute of Technology Karl-sruhe Germany

This paper addresses the problem of curb detection for ADAS or autonomous navigation in urban scenarios. The algorithm is based on clouds of 3D points. It is evaluated using 3D information from a pair of stereo cameras and a LIDAR. Curbs are detected based on road surface curvature. The curvature estimation requires a dense point cloud, therefore the density of the LIDAR cloud has been augmented using Iterative Closest Point (ICP) based on the previous scans. The proposed algorithm can deal with curbs of different curvature and heights, from as low as 3 cm, in a range up to 20 m (whenever that curbs are connected in the curvature image). The curb parameters are modeled using straight lines and compared to the ground-truth using the lateral error as the key parameter indicator. The ground-truth sequences were manually labeled on urban images from the KITTI dataset and made publicly available for the scientific community.

关键词： Three-dimensional displays Roads Laser radar Estimation Cameras Iterative closest point algorithm Sensors

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A new important-place identification method

A new important-place identification method

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International Conference on Computer and communications (ICCC)

作者： Chun-lai Ma Tao Ma Hong Shan Electronic Engineering Institute Hefei China Science and Technology on Communication Information Security Control Laboratory Hefei China

ISBN: (纸本)9781467381277

For the problem that the location of LBSN users was sparse because of it was updated sporadically. An important place identification method was studied by improving the clustering algorithm. Firstly, a velocity pruning algorithm was applied to remove interference points from source data. Secondly, clustering algorithm based on density peak named CFSFDP was selected. To solve the problem that it is unable to decide the cluster number with CFSFDP, an improved algorithm was presented. With a cluster center automatic choosing strategy, the algorithm searched for the `turning points' with the trends of cluster center weights changing. Then we could regard a set of points which weight is bigger than turning points' as cluster center. As a result, the error brought by ruling in the Decision Graph could be avoided with the strategy. Thirdly, reverse geocoding technology was applied to translate coordinate in semantic place. Check-in data of Foursquare user was set as an example in experiment, the result show that the improved algorithm had higher accuracy rate and lower computation compared to CFSFDP and DBSCAN. It also proved that the feasibility and effectiveness of the method proposed in the paper.

关键词： Clustering algorithms Algorithm design and analysis Turning Market research Social network services Global Positioning System Target tracking

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An Efficient Tolerant-Anisotropic Localization for Large-Scale Wireless Sensor Network

An Efficient Tolerant-Anisotropic Localization for Large-Sca...

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International Symposium on Parallel Architectures, Algorithms and Programming (PAAP)

作者： Xiaoyong Yan Aiguo Song Yu Liu Xuanyu Gu Remote Measurement and Control Key Lab of Jiangsu Province Southeast University Nanjing China School of Computer Engineering Jinling Institute of Technology Nanjing China School of Intelligence Science and Control Engineering Jinling Institute of Technology Nanjing China

Multi-hop localization is a common method which is suitable for large-scale application. However, it is usually influenced by the network anisotropy, leading to the instability of the localization performance. In order to reduce the influence of the network anisotropy on the localization accuracy, this paper regards the localization as a regression forecasting process by constructing the mapping relationship between hop-counts and Euclidean distances among nodes. The method can effectively avoid the influence of anisotropy on localization, and it has low computation overhead and high localization accuracy without setting complex parameters. The simulation experimental results show that compared with the previous similar algorithms, the proposed algorithm can obtain a faster localization speed and a higher localization accuracy.

关键词： Wireless sensor networks Euclidean distance Training Anisotropic magnetoresistance Support vector machines Handheld computers Network topology

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