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2010 2nd International Conference on computer technology and Development, ICCTD 2010

作者： Rashwan, Shaheera Faheem, Talaat Sarhan, Amany Youssef, Bayumy A.B. Informatics Research Institute Mubarak City for Science and Technology Borg ElArab Alexandria Egypt Computer Science and Automatic Control Department Faculty of Engineering Tanta University Tanta Egypt

ISBN: (纸本)9781424488438

An important issue in the analysis of two-dimensional electrophoresis images is the detection and quantification of protein spots. The main challenges in the segmentation of 2DGE images are to separate overlapping protein spots correctly and to find the abundance of weak protein spots. To enable comparison of protein patterns between different samples, it is necessary to match the patterns so that homologous spots are identified. In this paper we describe a new robust technique to segment and model the different spots present in the gels. The watershed segmentation algorithm is modified to handle the problem of over segmentation by initially partitioning the image to mosaic regions using the composition of fuzzy relations. The experimental results showed the effectiveness of the proposed algorithm to overcome the over segmentation problem associated with the available algorithms. © 2010 IEEE.

关键词： Electrophoresis

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T2: A novel two degree-of-freedom translational parallel robot for pick-and-place operation

T2: A novel two degree-of-freedom translational parallel rob...

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2010 8th IEEE International Conference on control and Automation, ICCA 2010

作者： Li, Zhibin Lou, Yunjiang Li, Zexiang Yang, Guilin Gao, Jian Division of Control and Mechatronics Engineering Shenzhen Graduate School Harbin Institute of Technology Shenzhen China School of Mechanical and Electrical Engineering Shenzhen Polytechnic China Department of Electronic and Computer Engineering Hong Kong University of Science and Technology Hong Kong Hong Kong Singapore Institute of Manufacturing Technology Singapore Singapore School of Electromechanical Engineering Guangdong University of Technology 729 East Dongfeng Road Guangzhou 510090 China

ISBN: (纸本)9781424451951

This paper deals with the conceptual design and kinematic analysis of a novel 2-DOF translational parallel robot for pick-and-place operations named as T2. The proposed architecture is composed of two actuated kinematic chains in the vertical plane and a passive chains in the transversal plane to make the orientation of the moving platform unchangeable. It not only has high speed and high acceleration, but also has a simple and symmetrical mechanism, and will be easier to control and cheaper than the existing 2-DOF robot. In this paper, the loop-closure equations of the robot is derived. the inverse kinematics, forward kinematics, singularity, and workspace analysis are presented. © 2010 IEEE.

关键词： Robots

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Earliest computer vision systems in Poland

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Advances in Intelligent and Soft Computing 2010年 84卷 3-13页

作者： Tadeusiewicz, Ryszard Faculty of Electrical Engineering Automatic Control Computer Science and Electronics Department of Automatic Control AGH University of Science and Technology Poland

ISBN: (纸本)9783642162947

In the paper is presented the brief history of research conducted in Poland (at AGH university) in the area of image processing, analysis and recognition. The history is connected with changes of the technology used for problem solving. First systems are build from the separate integrated circuits of low and medium scale of integration, after this we develop some systems build on the base of VLSI elements, and now the new systems are constructed on the base of FPGA technology. Nevertheless all the time scientific group from AGH was conducted research in technological applications of vision systems. At 70th and 80th years of XX century it was pioneer works devoted to building of second in Poland and one of the first in Europe systems for computer processing of the images, now research is dedicated mainly toward real time image processing systems. © 2010 Springer-Verlag Berlin Heidelberg.

关键词： Problem solving

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Modeling nonlinear acoustic wave fields in media with inhomogeneity in theattenuation and in the nonlinearity

Modeling nonlinear acoustic wave fields in media with inhomo...

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IEEE International Ultrasonics Symposium

作者： Demi, L. Verweij, M.D. De Jong, N. Van Dongen, K.W.A. Laboratory of Acoustical Imaging and Sound Control Faculty of Applied Sciences Delft University of Technology Netherlands Laboratory of Electromagnetic Research Faculty of Electrical Engineering Mathematics and Computer Science Delft University of Technology Netherlands Laboratory of Experimental Echocardiography Erasmus Medical Center Rotterdam Netherlands

ISBN: (纸本)9781457703829

Biomedical tissues usually show inhomogeneity in their acoustic mediumparameters. These inhomogeneities cause refraction and scattering of diagnosticand therapeutic ultrasound waves. A method that is able to model the effects ofinhomogeneity in the attenuation and in the nonlinearity is essential for thedesign of transducers for new ultrasound modalities and the development of novelultrasound applications. The Iterative Nonlinear Contrast Source (INCS) methodhas originally been designed for the accurate modeling of nonlinear acousticwave fields in homogeneous media. It considers the nonlinear term from theWestervelt equation as a distributed contrast source, and the correspondingintegral equation is solved using an iterative Neumann scheme. This paperpresents an extension of the INCS method that can handle inhomogeneity in theattenuation and in the coefficient of nonlinearity. Results are presented forthe one-dimensional case. These show that in this case the presented methodcorrectly predicts the effects related to nonlinear propagation and scatteringby inhomogeneities in the attenuation and the coefficient of non-linearity.© 2010 IEEE.

关键词： Nonlinear equations

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Modeling nonlinear medical ultrasound via a linearized contrast sourcemethod

Modeling nonlinear medical ultrasound via a linearized contr...

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IEEE International Ultrasonics Symposium

ISBN: (纸本)9781457703829

Research on nonlinear medical ultrasound has been increased over the lastdecade and has resulted in a wide range of numerical methods for the modeling ofthe nonlinear distortion of a propagating pressure wave. However, when appliedto realistic configurations, the majority of these methods are eithercomputationally expensive or limited by the applied approximations. TheIterative Nonlinear Contrast Source (INCS) method is able to accurately computethe pulsed nonlinear pressure wave field that is generated in a largethree-dimensional domain by an arbitrary transducer transmitting under a largesteering angle. The method is based on the Neumann iterative solution of anonlinear integral equation that is equivalent to the Westervelt equation. Toimprove the performance of the method, it would be beneficial to employiterative schemes (e.g. Conjugate Gradient based schemes) that are efficient forsolving linear integral equations. This motivates the development of alinearized version of the INCS method, as presented in this paper. To test thepresented approach, a Bi-CGSTAB scheme is used to solve the linearizedWestervelt equation. For the one-dimensional case, results are obtained andcompared with the solution obtained with the original INCS method, and theFubini solution. All the results have been obtained up to the third harmoniccomponent and are in agreement with each other. © 2010 IEEE.

关键词： Integral equations

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Multi-tissue Tetrahedral Mesh Generation from Medical Images

Multi-tissue Tetrahedral Mesh Generation from Medical Images

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The 4th International Conference on Bioinformatics and Biomedical engineering(第四届IEEE生物信息与生物医学工程国际会议 iCBBE 2010)

作者： Ping Hu Hui Chen Wen Wu Pheng-Ann Heng Information & Engineering Technology College Sichuan Agricultural University Yana China Shenzhen Shenzhen Institute of Advanced Integration Technology CAS/CUHK SIAT Shenzhen China Faculty of Science & Technology Department of Computer & Information Science University of Macau Shenzhen Institute of Advanced Integration Technology CAS/CUHK SIAT Shenzhen China Department of

A method extended from a constrained Delaunay algorithm, which generates the multi-tissue tetrahedral meshes for segmented medical images, is proposed in this paper. With an external boundary surface and internal sampling points, the anatomical objects are tetrahedralized homogenously. A new tissue-labeling scheme is utilized to assign the distinct tissue types of the additional inserted points and a division scheme is introduced to partition mixed-tissue tetrahedrons. The multitissue mandible tetrahedral models based on the Chinese Visible Human (CVH) dataset have been built with the proposed *** results have the uniform shapes and good property for interpolation. Furthermore, the boundaries between different tissues are also easily extracted.

关键词： Mesh generation Biomedical imaging Image segmentation Agricultural engineering Biomedical engineering Image sampling Humans Image reconstruction Educational institutions Content addressable storage

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Time-delay effect on continuous approximation of sliding mode control

Time-delay effect on continuous approximation of sliding mod...

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2010 11th International Workshop on Variable Structure Systems, VSS 2010

作者： Li, Xiangjun Yu, Xinghuo Han, Qinglong Wang, Changhong School of Electrical and Computer Engineering RMIT University Melbourne VIC 3001 Australia Faculty of Arts Business Information and Education Central Queensland University Rockhampton QLD 4702 Australia School of Control Science and Engineering Harbin Institute of Technology Harbin China

ISBN: (纸本)9781424458318

In this paper, time-delay effect on continuous approximation of sliding mode control (SMC) systems is studied in depth. The switching band that bound the zigzagging behaviors due to control switching around the switching manifold is constructed. Robust control theory is employed to develop a sufficient condition for the asymptotical stability of the system. Simulation is conducted to verify the theoretical results. © 2010 IEEE.

关键词： Sliding mode control

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Design and fabrication of an intelligent irrigation control system

Design and fabrication of an intelligent irrigation control ...

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作者： Algeeb, A. Albagul, A. Asseni, A. Khalifa, O. Jomah, O.S. Department of Electrical and Electronic Engineering Academy of Graduate Studies Tripoli Libya Department of Control Engineering Higher Institute of Electronics Baniwalid Libya Department of Electrical and Computer Engineering IIUM Kuala Lumpur Malaysia Faculty of Electrical Engineering Automatics Computer Science and Electronics AGH University of Science and Technology Poland

ISBN: (纸本)9789604741991

This paper describes the design and fabrication of an intelligent Irrigation control system that allows intelligent control of the water applied to the field at right amounts and times. The system should have the capabilities to measure the water content in the soil so water can be applied as needed. The WATERMARK soil moisture sensor based on the measurement of the soil tension will provide the measurement of the water content. The system measures the soil tension, soil temperature and rain status and records the data in a file for future reference. It will apply water to field if a certain level of soil water tension is reached. This intelligent Irrigation control system is suitable for universities, research centers and farms where a control of the soil water content is required. The system can be used to study the water requirements for crops so irrigation can be scheduled efficiently.

关键词： Fabrication

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Design and fabrication of an intelligent irrigation control system

Design and fabrication of an intelligent irrigation control ...

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ISBN: (纸本)9789604742486

关键词： Fabrication

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Conceptual design of an energy efficient transfemoral prosthesis

Conceptual design of an energy efficient transfemoral prosth...

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2010 IEEE/RSJ International Conference on Intelligent Robots and Systems

作者： R. Unal R. Carloni E.E.G. Hekman S. Stramigioli H.F.J.M. Koopman Control Engineering Laboratory Faculty of Electrical Engineering Mathematics and Computer Science Biomechanical Engineering Laboratory Faculty of Engineering Technology University of Twente Netherlands Control Engineering Laboratory Faculty of Electrical Engineering Mathematics and Computer Science University of Twente Netherlands Biomechanical Engineering Laboratory Faculty of Engineering Technology University of Twente Netherlands

In this study, we present the conceptual design of a fully-passive transfemoral prosthesis. The design is inspired by the power flow in human gait in order to have an energy efficient device. The working principle of the conceptual mechanism is based on three storage elements, which are responsible of the energetic coupling between the knee and the ankle joints. Design parameters of the prosthesis have been determined according to the energy absorption intervals of the human gait. Simulation results shows that the power flow of the system is comparable with human data. Finally, an initial prototype is presented as proof of concept.

关键词： Knee Joints Humans Springs Leg Absorption Prosthetics

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