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2011 IEEE 13th Electronics Packaging Technology Conference, EPTC 2011

作者： Chang, Chunming Huang, Chenghan Lai, Tenghsien Tsou, Chingfu Hwang, Thong-Shing Chen, Chiming Department of Automatic Control Engineering Feng Chia University Taichung Taiwan Graduate Institute of Electrical and Communications Eng. Ph.D. Program Feng Chia University Taichung Taiwan Silicon Base Development Inc. Science Park Hsinchu Taiwan

ISBN: (纸本)9781457719837

This study demonstrated a newly type technology of a wafer level packaging method for light emitting diode (LEd) with aspheric lens and microlens array using microelectromechanical systems (MEMS) technology and transfer molding process. The novel packaging structure includes two components: the silicon-based packaging substrate which is formed with arrayed reflector depression and through-hole interconnects by bulk micromachining and the optical encapsulation with lens configuration that formed by transfer molding in wafer level. By this pattern transfer process, the precise alignment between lens configuration and the reflector of silicon substrate can be achieved and batch process can be realized to reduce the costs. Beside, the packaging element can be used more applications. In the study, the pattern transfer of various lens profiles was also accomplished successfully by using silicone gel as lens mold. The brightness of the packaging elements with single aspheric lens profile and high fill factor microlens array can be increased by 26% and 16%, respectively, in comparison to the case of optical encapsulation with smooth curved surface. Furthermore, the light radiation uniformity was improved effectively through 100% fill factor microlens array. Therefore, the structure can satisfy the requirements of wafer level LEd packaging and improve the heat dissipation and light extraction efficiency. © 2011 IEEE.

关键词： Batch data processing

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The Replication Technology in E-learning Systems

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Procedia - Social and Behavioral sciences 2011年 28卷 231-235页

作者： Iacob (Ciobanu) Nicoleta – Magdalena Ph.D. student Faculty of Mathematics - Computer Science /Department of Computer Science University of Pitesti Str. Targu din Vale nr.1 Arges and Postcode 110040 Romania

The distributed systems are attractive for the users with various, interactive activities that require large processing capabilities, resource sharing and high availability. This paper presents the advantages of e-Learning education and focus on the importance of data replication in the design of a distributed database system that an e-learning portal uses. In addition, we analyze the available methods and strategies of data replication depending on needs, for improving performance and increasing data availability. The purpose of this paper is to present the advantages of using data replication technology in e-learning systems by universities with geographically distributed locations.

关键词： e-Learning distributed databases fragmentation replication allocation methods strategies

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distributed Queries in the E-learning Environment

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Procedia - Social and Behavioral sciences 2011年 28卷 241-245页

This paper presents the advantages of e-Learning education and focus on query processing in distributed databases. For this, we present the factors that influence distributed query optimization and examine the optimization strategies of query execution. The goal of this paper is to present strategies of optimizing query execution in e-learning systems used mainly by universities with geographically distributed locations, in order to obtain a system response time as low as possible and to minimize the total cost of implementation.

关键词： e-Learning distributed databases queries factors strategies

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Towards low-power, low-profile avionics architecture and control for micro aerial vehicles

Towards low-power, low-profile avionics architecture and con...

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2011 IEEE Aerospace Conference, AERO 2011

作者： Ratti, Jayant Moon, Jung-Ho Vachtsevanos, George Ph.D. Robotics Program Electrical and Computer Engg. Dept. Georgia Institute of Technology Atlanta GA 30332 United States Kangnung National Univ. Korea Republic of Georgia Institute of Technology Atlanta GA 30332 United States Electrical and Computer Engg. Dept. Georgia Institute of Technology Atlanta GA 30332 United States

ISBN: (纸本)9781424473502

The conventional Mini and Large scale UAV systems span anywhere from approximately 12 inches to 12 feet;endowing them with larger propulsion systems, batteries/fuel-tanks, which in turn provide ample footprint and power reserves for on-board avionics and wireless telemetry. The limitations thus imposed become apparent when shifting to Micro Aerial Vehicles (MAVs) and trying to equip them with equal or near-equal processing, sensing and communication capabilities, as their larger scale cousins. The conventional MAV as outlined by dARPA is a vehicle that can have a maximum dimension of 6 inches and weighs no more than 100 grams. Under these tight constraints, the footprint, weight and power reserves available to on-board avionics is drastically reduced. The paper presents the advent of a new line of Micro Architecture and Control (MARC) avionics systems with very low-power, multi-sensor, multi-processor avionics interconnect architecture designed specifically with the power and payload constraints of MAVs in mind. The results and a Real Time Operating System (RTOS) based Hardware in the Loop Simulation (HILS), flight control is discussed towards the end. © 2011 IEEE.

关键词： Flight simulators

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Constant speed VSC of a spherical robot driven by Omni wheels

Constant speed VSC of a spherical robot driven by Omni wheel...

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International Conference on Machine Learning and Cybernetics (ICMLC)

作者： Chi-Hua Wang Yu-Hsiang Lin Kun-Shu Huang Bore-Kuen Lee Kuo-Bin Lin And Chi-Kuang Hwang Department of Electrical Engineering Chung Hua University Hsinchu Taiwan Ph.D. Program in Engineering Science Chung Hua University Hsinchu Taiwan Yuanpei University Hsinchu Taiwan

This paper mainly outlines the model of the invented spherical robot using Omni wheels to drive a spherical wheel. The dynamical model is derived based on Euler Lagrange approach. Therefore, based on the derived model, the variable structure control (VSC) is presented in which the sliding mode control (SMC) is adopted to achieve a constant speed at a vertical balance altitude. Simulations of the proposed control algorithm have been conducted based on two pre-determined sliding surfaces with adjustable parameters to discuss the effective time to enter the sliding surface and the convergence.

关键词： Wheels Mobile robots Mathematical model Control systems Machine learning Cybernetics

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The other Iraq: Exploring Iraqi kurdistan

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Focus on Geography 2012年第2期55卷 31-40页

作者： Jimenez, Jeremy Kabachnik, Peter Jeremy Jimenez is a Ph.D. student in the International and Comparative Education program at Stanford University. Some of his research interests include incorporating pedagogical strategies and topics such as critical inquiry empathy studies and human rights into social studies curriculum. Jeremy can be contacted at ximenez@stanford.edu. Peter Kabachnik is an Assistant Professor of Geography in the Department of Political Science Economics and Philosophy at the College of Staten Island-City University of New York (CUNY). His current research examines discrimination against Gypsy and Traveler groups in Britain the situation of internally displaced persons (IDPs) in the Republic of Georgia and nation- and statebuilding practices in Abkhazia. Peter can be reached at peter.kabachnik@csi.cuny.edu.

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Ethical standards adopted by Brazilian journals of medical specialties

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Revista da Associação Médica Brasileira (English Edition) 2011年第3期57卷 264-268页

作者： Marcos Rassi Fernandes Maria Conceição Castro Antonelli Monteiro Queiroz Maria Rosedália de Moraes Maria Alves Barbosa Ana Luiza Lima Sousa Department of Orthopedics/Traumatology MSc in Health Science Medical School Universidade Federal de Goiás Goiânia GO Brazil M.Sc. Student in Health Sciences Medical School Universidade Federal de Goiás Goiânia GO Brazil Ph.D. in Nursing Professor Health Science Post-graduation Program Medical School Universidade Federal de Goiás Goiânia GO Brazil Ph.D. in Public Health Professor Health Science Post-graduation Program Medical School Universidade Federal de Goiás Goiânia GO Brazil

Objective To review ethical standards contained in guidelines to authors of Brazilian scientific journals in several medical specialties and see if there is any standardization available. Methods This is an exploratory study evaluating Brazilian scientific journals classified on the Portal of Journals on Health sciences of the Virtual Health Library in all medical specialties regarding guidelines to authors submitting manuscripts and concerning ethical standards for research in humans. data were collected and categorized for the presence of the following variables: Ethics Committee approval; Helsinki declaration and/or Resolution 196/96, informed consent; ethical standards; uniform requirements; patients’ confidentiality and no ethical references. The association among the variables was also examined. Results Out of a total of 8,701 journals, 95 were included in the current study. The variables were investigated, with each one's frequency being verified. Eighty per cent were referred for an Ethics Committee approval; 43.15% of Helsinki declaration; 43.15% of informed consent; 9.47% of ethical standards; 32.63% of uniform requirements and 15.78% of patients’ confidentiality were referenced. In the whole sampling, 9.47% of journals do not mention any ethical reference as a guide to authors submitting manuscripts. An association among variables occurred in 61% of the sample. Conclusion Ethical aspects of submitting manuscripts were mentioned in over 90% of the guides to authors of national scientific journals and no standardization at all is available.

关键词： Ethics bioethics ethics committees research

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MEMS technology on wafer-lever LEd packaging

MEMS technology on wafer-lever LED packaging

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Electronics Packaging Technology Conference (EPTC)

作者： Chunming Chang Chenghan Huang Tenghsien Lai Chingfu Tsou Thong-Shing Hwang Chiming Chen Department of Automatic Control Engineering Feng Chia University FCU Taichung Taiwan The Graduate Institute of Electrical and Communications Engineering Ph.D. Program Feng Chia University FCU Taichung Taiwan Silicon Base Development Inc. Science Park Hsinchu Taiwan

ISBN: (纸本)9781457719837

关键词： Lenses Light emitting diodes Substrates Encapsulation Microoptics Arrays

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It's an FPGA!

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IEEE Solid-State Circuits Magazine 2011年第4期3卷 15-20页

作者： Peter Alfke Ivo Bolsens Bill Carter Mike Santarini Steve Trimberger Xilinx Research Laboratories USA He holds a Ph.D. in applied science and an M.S.E.E. from K.U. Leuven Belgium. He was a member of the Custom Integrated Circuit Conference Technical Program Committee from 1987 through 1993. For 14 years prior to joining Xilinx he was an editor for the trade publications EDN EE Times and Integrated System Design. Xilinx Research Laboratories San Jose CA USA

The paper presents the birth of the world first FPGA, called the XC2064. Xilinx and Seiko worked together to solve the whisker issue and a few others, and soon the XC2064, the world's first FPGA, was commercially available. It was the beginning of a fruitful relationship between the two companies. In addition to providing an additional revenue stream to Seiko, running FPGAs with their repetitive structures through the fabs helped Seiko debug subsequent generations of silicon processes and produce greater yields and lower costs for all devices it manufactured. This use of FPGAs as a "process driver" allowed Xilinx access to leading-edge manufacturing technology at Seiko and at other foundries.

关键词： Field programmable gate arrays Technological innovation Electronics industry Semiconductor device manufacture Integrated circuit technology

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CALE: A context-aware living environment based on Zigbee sensor network

CALE: A context-aware living environment based on Zigbee sen...

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International Conference on Mobile Ad-hoc and Sensor Networks

作者： Yu, Kun-Ming Liou, Jian-Yuan Yeh, Bo-Han Yu, Chang Wu Tien, Ching-Cheng Wang, Chih-Hu Wang, Ping-Yu Department of Computer Science and Information Engineering Chung Hua University Taiwan Ph.D. Program of Technology Management Chung Hua University Taiwan Department of Electrical Engineering Chung Hua University Taiwan

ISBN: (纸本)9780769543154

The paper employed some independently developed sensors based on the Octopus X platform to build a Zigbee-based Sensor Networks. Also, we implemented a Location-aware living environment by deploying the developed Zigee-based sensor. Besides, through the created window console interface, the sensed data can be transmitted and transformed to the database for further utilized. Moreover, by the devised Web interface, the update request data can be observed efficiently and responded effectively to any situations. © 2010 IEEE.

关键词： Zigbee

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