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Design and implementation for image reconstruction of CompressiveSensing using FPGA

Design and implementation for image reconstruction of Compre...

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3rd Annual IEEE international conference on Cyber Technology in Automation, Control, and Intelligent Systems, IEEE-CYBER 2013

作者： Bi, Sheng Xi, Ning Lai, King Wai Chiu Pan, Xuwei Department of Mechanical and Biomedical Engineering City University of Hong Kong Hong Kong Hong Kong

ISBN: (纸本)9781479906109

A novel single pixel camera system has been introduced to overcome the current limitation and challenges of traditional focal plane arrays. This new hardware system mainly employs one photo-sensing element/pixel and a digital micromirror device (DMD). By consideration of a new mathematical theory and algorithms of compressive sampling, we can reconstruct images based on the measurement results of the photo-sensing element. However, the development reminds challenge. Since large amount of data is accessed and the inherent delay of instruction cycle within transporting data on the DMD, it makes real-time processing of image recovery difficult. Conventionally, the pattern data was transported to DMD from PC through USB interface. Since the USB interface limited the data transfer speed, the total time of signal collection and image reconstruction was about 30 minutes. In this paper, FPGA is used to transport data from SDRAM to control the DMD, and at the same time, the signal of the photo-sensing element is acquired. As a result the control of the DMD can be improved and imaging processing time can be reduced. The development includes various components such as SDRAM interface, FIFO Data buffer, ADC interface, USB interface and DMD control interface. Comparing with the method of transporting data through PC, the time for image recovery is greatly reduced. © 2013 IEEE.

关键词： Compressed sensing

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Secure method for data storage and sharing during data outsourcing

Secure method for data storage and sharing during data outso...

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5th FTRA international conference on Information Technology Convergence and Services, ITCS 2013 and the 3rd international conference on Intelligent robotics, Automations, Telecommunication Facilities, and Applications, IRoA 2013

作者： Lee, Sun-Ho Go, Sung Jong Lee, Im-Yeong Department of Computer Software Engineering Soonchunhyang University Asan-si Chungcheongnam-do Korea Republic of

ISBN: (纸本)9789400769953

Data outsourcing services have emerged with the increasing use of digital information. They can be used to store data via networks and various devices, which are easy to access. Unlike existing removable storage systems, storage outsourcing is available to many users because it has no storage limit and does not require a storage medium. However, the reliability of storage outsourcing has become an important topic because many users employ it to store large volumes of data. To protect against unethical administrators and attackers, a variety of cryptography systems are used, such as searchable encryption and proxy re-encryption. However, existing searchable encryption technology is inconvenient for use in the storage outsourcing environments where users upload their data, which are shared with others as necessary. The users also change frequently. In addition, some existing methods are vulnerable to collusion attacks and have computing cost inefficiencies. In this paper, we propose a secure and efficient method for data storage and sharing during data outsourcing. © 2013 Springer Science+Business Media Dordrecht.

关键词： Outsourcing

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Influence of C and φ values on slope supporting by soil nailing wall in thick miscellaneous fill site

Influence of C and φ values on slope supporting by soil nai...

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2013 3rd international conference on mechatronics and Intelligent Materials, MIM 2013

作者： Wu, Di Wang, Peng Liu, Guo-Qiang College of Construction Engineering Jilin University Changchun China Yantai Wanhua Polyurethanes Co. Ltd Yantai China

ISBN: (纸本)9783037857106

In recent years, soil nailing wall supporting technology is widely applied in the design of pit supporting. However, in the design of deep foundation pit supporting in miscellaneous fill site, the values of cohesion and angle of internal friction, that is c and φ, are too conservative to be chosen, so the security and economy cannot be obtained together. To study the influence of c and φ values on deep foundation pit supporting design in miscellaneous fill site, Lizheng-FSPw60 was the analysis software, and the circular sliding simple slice method was the theory. It is concluded that cohesion and internal friction angle of the soil have great influence on the stability of the soil nailing wall. Analysis and practice show that if c and φ values are reasonably chosen, the slope supported by soil nailing wall in thick miscellaneous fill site will be much safer, and the project will be less wasteful. © (2013) Trans Tech Publications, Switzerland.

关键词： Soils

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Reconstruction of 3D natural field scenes based on SLAM robot

Reconstruction of 3D natural field scenes based on SLAM robo...

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2013 IFAC Bio-robotics conference, IFAC Biorobotics 2013

作者： Shih, Jhih-Syuan Lin, Ta-Te Department of Bio-Industrial Mechatronics Engineering National Taiwan University Taiwan

ISBN: (纸本)9783902823304

Mobile robots have already been widely applied in agriculture fields. In order to perform complex tasks such as localization, mapping and path planning, mobile robots need to understand their environment. Therefore, the perception ability is important to robots. In the past twenty years, Simultaneous Localization and Mapping has been a popular algorithm to solve localization and mapping problems. In agricultural applications, robots need to overcome bumpy surfaces and should avoid inducing destruction to plant growths. Hence, the assumptions of robot poses need to be represented by six degree of freedom, not just flat surface movements. In order to estimate the 6D poses, 3D information was acquired by our custom-made of 3D laser scanner. The ICP algorithm then merged different scenes together to reconstruct the whole environment. However, errors are accumulated in the ICP algorithm, so a global optimization algorithm was applied to deal with this accumulated error. We had successfully reconstructed two large scale environments that contain millions of points. The method we proposed here has a RMSE of 55.94 centimeters. It is believed that this system has different applications such as agriculture field investigation, virtual reality and geographic information system.

关键词： Motion planning

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An IoT-based framework for supporting children with autism spectrum disorder

An IoT-based framework for supporting children with autism s...

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作者： Sula, Ardiana Spaho, Evjola Matsuo, Keita Barolli, Leonard Xhafa, Fatos Miho, Rozeta Ministry of Education and Science of Albania Rr. Durresit Nr 23 1001 Tirana Albania 3-30-1 Wajiro-Higashi Higashi-Ku Fukuoka 811-0295 Japan Fukuoka Prefectural Kaho-Sogo High School 1117-1 Haji Keisen-Machi Kaho-Gun Fukuoka 820-0607 Japan Technical University of Catalonia Department of Languages and Informatics Systems C/Jordi Girona 1-3 08034 Barcelona Spain Polytechnic University of Tirana Mother Teresa Square Nr. 4 Tirana Albania

ISBN: (纸本)9789400769953

In this paper, we propose a framework based on Internet of Things (IoT) and P2P technology for supporting learning and improving the quality of life for children with Autism Spectrum Disorder (ASD). Many children with autism are highly interested and motivated by smart devices such as computers and touch screen tablets. These types of assistive technology devices get children with autism to interact, make choices, respond, and tell parents what they want, need, think, and maybe even feel. Out framework uses JXTA-Overlay platform and smartbox device to monitor the children and create P2P communication between children, parents and therapists. Various visual systems, such as objects, photographs, realistic drawings, line drawings, and written words, can be used with assorted modes of technology, as long as the child can readily comprehend the visual representation. Vocabulary skills such as names of common everyday objects, fruits, animals, toys, names of familiar people can be taught through our proposed framework. © 2013 Springer Science+Business Media Dordrecht.

关键词： Assistive technology

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The development of a simple tool to reduce the sitting time using Seeeduino Stalker and LabVIEW

The development of a simple tool to reduce the sitting time ...

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international conference on Instrumentation, Communications, Information Technology, and Biomedical engineering (ICICI-BME)

作者： Dian Artanto Department of Mechatronics Polytechnic of Sanata Dharma Yogyakarta Indonesia

This paper describes the development of a simple tool to record the sitting time of a user, and give a warning if his/her sitting time exceeds the specified time limit. The tool was mounted on a chair to make the user free from the hassle of carrying it. The tool was made using a Seeeduino Stalker, which is a microcontroller board for wireless sensor network, with data logger functionality. The tool was equipped with a pressure sensor, FSR, to determine whether the chair is occupied, and a Buzzer to provide a warning sign. LabVIEW software is used here to create a user-friendly display. By using the tool, it is expected that the user can reduce his/her sitting time.

关键词： Software Cardiovascular diseases Microcontrollers Diabetes Computers Instruments Information technology

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An improved and efficient algorithm for SINS/Gps/doppler integrated navigation systems

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3rd international conference on Biomechanics, Neurorehabilitation, Mechanical engineering, Manufacturing Systems, robotics and Aerospace, ICMERA 2012

作者： Ushaq, Muhammad Cheng, Fang Jian PhD Candidate School of Instrumentation Science and Optoelectronics Engineering Beihang University 37 Xue Yuan Lu Haidian Distric China Head of Department School of Instrumentation Science and Optoelectronics Engineering Beihang University 37 Xue Yuan Lu Haidian Distric China

ISBN: (纸本)9783037855546

Inertial navigation systems exhibit position errors that tend to grow with time in an unbounded mode. This degradation is due, in part, to errors in the initialization of the inertial measurement unit and inertial sensor imperfections such as accelerometer biases and gyroscope drifts. Mitigation to this growth and bounding the errors is to update the inertial navigation system periodically with external position (and/or velocity, attitude) fixes. The synergistic effect is obtained through external measurements updating the inertial navigation system using Kalman filter algorithm. It is a natural requirement that the inertial data and data from the external aids be combined in an optimal and efficient manner. In this paper an efficient method for integration of Strapdown Inertia Navigation System (SINS), Global Positioning System (GPS) and Doppler radar is presented using a centralized linear Kalman filter by treating vector measurements with uncorrelated errors as scalars. Two main advantages have been obtained with this improved scheme. First is the reduced computation time as the number of arithmetic computation required for processing a vector as successive scalar measurements is significantly less than the corresponding number of operations for vector measurement processing. Second advantage is the improved numerical accuracy as avoiding matrix inversion in the implementation of covariance equations improves the robustness of the covariance computations against round off errors. © (2013) Trans Tech Publications, Switzerland.

关键词： Global positioning system

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Effect of Heat Treatment on Mechanical Properties of AISI 4147 Spring Steel

Effect of Heat Treatment on Mechanical Properties of AISI 41...

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The 3rd international conference on Intelligent Computational Systems(ICICS’2013);The 3rd international conference on Mechanical,Automotive and Materials engineering(ICMAME’2013);The 3rd international conference on Electronics,Biomedical engineering and its Applications(ICEBEA’2013);The 3rd international conference on Ecological,Environmental and Biological Sciences(ICEEBS’2013);The 3rd international conference on Business,Economics,Management and BehavioralSciences 2013(ICBEMBS’2013);The 3rd international conference on Applied Mathematics and Pharmaceutical Sciences(ICAMPS’2013)

作者： S. S. Sharma K. Jagannath C.Bhat U. Achutha Kini P. R. Prabhu Jayashree P. K Gowrishankar M. C Department of Mechatronics Engineering Manipal Institute of Technology

Today steel is the most important resource in this industrialized world. It forms the basic building material of today's structure. Moreover steels with large chromium and vanadium percentage can be used as spring steels which form the suspension system. Prevention of wear and increase in steel life depends principally on the design and operation on the component, but providing some pre-use treatment on steel can also improve the quality to a great extent. It has been seen that most of the study focuses on the experimental testing of the steel component and very few focuses on the material testing and improving its properties beforehand. One of the processing routes to alter the properties is heat treatment. Nearly 90% of the springs are used in heat treated conditions. The major requirement for the conventional spring steel is toughness, strength & hardness. In this view, it is proposed to study the mechanical and tribological properties of AISI 4147 (EN47) spring steel with different heat (thermal) treatments like normalizing, hardening and tempering. All heat treatments are carried out in atmospheric condition. Hardening treatment improves hardness of the material, a marginal decrease in hardness value with improved ductility is observed in tempering. Hardening and longer duration tempering show better wear resistance compare to other heat treatments. Both mild and severe wear regions are observed. Generally mild wear region is observed above 5 hours of continuous running of the specimen. Microstructural analysis shows the existence of pearlitic structure in as bought & normalized specimens, lath martensitic structure in hardened specimen.

关键词： tempering, hardness, heat treatment, normalizing, toughness

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A simulation-based investigation on workpiece roundness generation and its perfection strategies in centreless grinding process

A simulation-based investigation on workpiece roundness gene...

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43rd international conference on Computers and Industrial engineering 2013, CIE 2013

作者： Cui, Q. Ding, H. Cheng, K. School of Mechatronics Engineering Harbin Institute of Technology Harbin 150001 China Department of Advanced Manufacturing and Enterprise Engineering Brunel University Uxbridge Middlesex UB8 3PH United Kingdom

ISBN: (纸本)9781629934372

Perusing the perfect roundness of the workpiece ground through the highly efficient centreless grinding process is becoming increasingly important particularly in modern automotive components manufacturing. However, the fining grinding of the workpiece roundness is affected by many factors, including the machine dynamics, the process set-up and parameters, and grinding wheels performance and set-up, etc. Many of the factors contain nonlinear and coupling elements, which makes the analysis and modelling of the grinding process be more complex. This paper investigates the multiple factors in the centreless grinding process particularly their collective effects on the workpiece roundness generation and the associated grinding strategies for the roundness perfection. A dynamic simulation model is presented for the workpiece roundness generation. In the model the contacts from wheels and work-rest to the workpiece are calculated according to their time varying profiles, and the movements of the workpiece are determined from the interactions between them. The analysis on the workpiece roundness generation is through dynamically obtaining the profiles and positions of the workpiece and grinding wheel. The dynamic simulation and models can also be used to predict the roundness error, material removal rate and power consumed in the grinding process, which are implemented in MATLAB programming environment. The paper concludes with further discussion on the potential and application of the simulation model particularly for process optimization and control in CNC centreless grinding of high precision automotive components.

关键词： Grinding (machining)

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Finite element modeling of composites system in aerospace application

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3rd international conference on Biomechanics, Neurorehabilitation, Mechanical engineering, Manufacturing Systems, robotics and Aerospace, ICMERA 2012

作者： Al-Madani, Ramadan A. Jarnaz, M. Alkharmaji, K. Essuri, M. Al-Jabel Algharbi University Engineering Faculty Gharian Libya Academy of Graduate Studies Tripoli Libya Al-Zawia University Engineering Faculty Zawia Libya

ISBN: (纸本)9783037855546

The characteristics of composite materials are of high importance to engineering applications;therefore the increasing use as a substitute for conventional materials, especially in the field of aircraft and space industries. It is a known fact that researchers use finite element programs for the design and analysis of composite structures, use of symmetrical conditions especially in complicated structures, in the modeling and analysis phase of the design, to reduce processing time, memory size required, and simplifying complicated calculations, as well as considering the response of composite structures to different loading conditions to be identical to that of metallic structures. Finite element methods are a popular method used to analyze composite laminate structures. The design of laminated composite structures includes phases that do not exist in the design of traditional metallic structures, for instance, the choice of possible material combinations is huge and the mechanical properties of a composite structure, which are anisotropic by nature, are created in the design phase with the choice of the appropriate fiber orientations and stacking sequence. The use of finite element programs (conventional analysis usually applied in the case of orthotropic materials) to analysis composite structures especially those manufactured using angle ply laminate techniques or a combination of cross and angle ply techniques, as well considering the loading response of the composite structure to be identical to that of structures made of traditional materials, has made the use of, and the results obtained by using such analysis techniques and conditions questionable. Hence, the main objective of this paper is to highlight and present the results obtained when analyzing and modeling symmetrical conditions as applied to commercial materials and that applied to composite laminates. A comparison case study is carried out using cross-ply and angle-ply laminates which concluded that

关键词： Finite element method

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