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Thin Film Transistors 9, TFT 9 - 214th ECS Meeting

作者： Kim, Sun-Jae Han, Sang-Myeon Kwon, Jang-Yeon Jung, Ji-Sim Hana, Min-Koo Department of Electrical Engineering and Computer Science Seoul National University Seoul 151-741 Korea Republic of Display Device and Processing Lab. Samsung Advanced Institute of Technology Yong-In 446-712 Korea Republic of

ISBN: (纸本)9781566776554

Bottom-gate nanocrystalline silicon (nc-Si) thin film transistors (TFTs) were fabricated and evaluated their characteristics and electrical stability under various stress condition. nc-Si with high crystallinity was deposited employing Inductively coupled plasma chemical vapor deposition(ICP-CVD) system. We employed helium gas diluted deposition and all the process temperature was kept under 350°C. We fabricated conventional inverted-staggered nc-Si TFTs. Fabricated nc-Si TFTs showed fine electrical characteristics, such as electrical mobility of 0.64-0.77 cm2/***. We investigated its stability through constant-voltage stress and constant-current stress. The threshold voltage shift after 30, 000 seconds gate bias (10V) stress was only 0.098V, which is considerably less compared to a-Si:H TFT. Under the static current stress condition, the threshold voltage of the nc-Si TFT was shifted less than that of a-Si:H TFT. It demonstrates that nc-Si TFT exhibit better stability than conventional a-Si:H TFT. ©The Electrochemical Society.

关键词： Thin film transistors

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Process simulation of Multi-layer and Multi-channel Selective Laser Melt of Al2O3 Ceramics Based on Temperature Field 3

Process simulation of Multi-layer and Multi-channel Selectiv...

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3rd International Conference on Traffic engineering and Transportation System, ICTETS 2019

作者： Chen, Xiaobing Sun, Quan Sun, Quanping Wu, Haibing Chang, Zhang Key Lab of Advanced Manufacturing Technology of Jiangsu Province Huaiyin Institute of Technology Huai'an Jiangsu Province223003 China Faculty of Computer and Software Engineering Huaiyin Institute of Technology Huai'an Jiangsu Province223003 China

Based on the temperature field theory and ANSYS software, the simulation model of Al2O3 ceramics selective laser melting (SLM) temperature field of multi-layer and multi-channel was established, and the analysis process of SLM temperature field simulation was designed. The temperature distribution of Al2O3 ceramics SLM temperature field and molten pool forming characteristics were researched. When the laser power is 105W, the scanning speed is 50mm/s and the thickness of powder layer is 0.25m, there is no remelting in adjacent molten channels in the same layer and multiple layers. Laser power and scanning speed are the main factors that whether remelting occurs in adjacent molten channels and multiple layers. © Published under licence by IOP Publishing Ltd.

关键词： Temperature

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Simulation on Molten Pool Characteristics of Al2O3 Laser Selective Melting Based on Energy Input Model

Simulation on Molten Pool Characteristics of Al2O3 Laser Sel...

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2019 International Conference on Optoelectronic Science and Materials, ICOSM 2019

作者： Chen, Xiaobing Sun, Quan Sun, Quanping Wu, Haibing Xu, Qian Key Lab of Advanced Manufacturing Technology of Jiangsu Province Huaiyin Institute of Technology Huai'an Jiangsu Province223003 China Faculty of Computer and Software Engineering Huaiyin Institute of Technology Huai'an Jiangsu Province223003 China

In order to obtain the formation rule of molten pool characteristics in SLM process of ceramics, an energy input model for SLM process of Al2O3 ceramics is established. The model is related to laser power P, scanning speed v, scanning spacing s and thickness h of powder layer. The influence of process parameters in the energy model on molten pool characteristics is analyzed by simulation of temperature field of multi-layer and multi-channel SLM process. The simulation results show that when the laser power P is 105W, the scanning speed v is 50mm/s, the initial temperature of powder is 330°C and the thickness of powder layer is 0.20mm, the molten pool formed is easy to form Al2O3 ceramic specimens. © Published under licence by IOP Publishing Ltd.

关键词： Selective laser melting

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Co-modeling and co-simulation of package and on-chip decoupling capacitor for resonant free power/ground network design

Co-modeling and co-simulation of package and on-chip decoupl...

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55th Electronic Components and Technology Conference, ECTC

作者： Park, Hyunjeong Kim, Hyungsoo Kam, Dong Gun Kim, Joungho Terahertz Interconnection and Package Lab. Dept. of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology 373-1 Guseong-dong Yuseong-gu Daejeon 305-701 Korea Republic of

The co-modeling and co-simulation results about the package and on-chip power/ground network have been demonstrated. The inevitable parallel resonance peak, due to the inductive parasitic on the package and on-chip decoupling capacitor, was analyzed in frequency domain. Subsequently, the co-design procedure for the resonant free power/ground network was suggested and evaluated simply in frequency domain. © 2005 IEEE.

关键词： Capacitors

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Bleeding detection in wireless capsule endoscopy images by support vector classifier

Bleeding detection in wireless capsule endoscopy images by s...

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2010 IEEE International Conference on Information and Automation, ICIA 2010

作者： Cui, Lei Hu, Chao Zou, Yuexian Meng, Max Q.-H. Shenzhen Key Lab for Low-Cost Health Shenzhen Institutes of Advanced Integration Technology Chinese Academy of Sciences Shenzhen China Department of Computer and Information Engineering Shenzhen Graduate School Peking University Shenzhen China

ISBN: (纸本)9781424457021

Wireless capsule endoscopy (WCE) is a great breakthrough for Gastrointestinal (GI) Tract diagnoses, and it can view the entire gastrointestinal tract, especially the small intestine without invasiveness and sedation. However, a tough problem associated with this new technology is that too many images to be inspected by naked eyes cause a huge burden to physicians, so it is significant to find an automatic diagnosis method. In this paper, a new automatic algorithm for bleeding detection in WCE images is proposed. This new approach mainly focuses on color feature which is also a very effective clue used by physicians for diagnosis. We propose six color features in HSI color space to discriminate between bleeding and normal status. Then we use support vector classifier to verify the performance of the proposed features and judge the status of the images. Experimental results show that the proposed features and classification method is effective and the average accuracy can achieve approximately 97%. ©2010 IEEE.

关键词： Endoscopy

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A three-phase ad hoc network formation protocol for Bluetooth systems 5

A three-phase ad hoc network formation protocol for Bluetoot...

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5th International Symposium on Wireless Personal Multimedia Communications, WPMC 2002

作者： Yun, JiHyuck Kim, Jesung Kim, Yong-Suk Ma, Joong Soo School of Computer Science and Engineering Seoul National University Seoul Korea Republic of I-Networking Lab. Samsung Advanced Institute of Technology Suwon Korea Republic of Information and Communications University Taejon Korea Republic of

ISBN: (纸本)0780374428

Recently, Bluetooth is considered attractive as a means of building an instantaneous ad hoc network consisting of personal devices. However, Bluetooth-based ad hoc networking raises several issues due to the characteristics of the technology such as spread spectrum and the asymmetric communication model. In this paper, we propose a network formation model that considers the technical characteristics of Bluetooth. The proposed model identifies three essential phases that a Bluetooth system must implement to form an ad hoc network, namely, (I) neighbor discovery, (2) neighbor grouping, and (3) role assignment. Each of these phases introduces several design trade-offs, producing a design space that encompasses previously proposed designs as well as new designs. Based on this observation, we propose a new ad hoc network formation protocol called Bluestars. The proposed protocol has nice properties such as shorter average distance between nodes, higher reach-ability between nodes, and lower overheads associated with an addition of new nodes, yet it is simple enough to be implemented in a small system.

关键词： Bluetooth

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Reviewing perovskite oxide sites influence on electrocatalytic reactions for high energy density devices

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Journal of Energy Chemistry 2023年第6期81卷 1-19,I0002页

作者： Lorrane C.C.B.Oliveira Raissa Venâncio Paulo V.F.de Azevedo Chayene G.Anchieta Thayane C.M.Nepel Cristiane B.Rodella Hudson Zanin Gustavo Doubek Advanced Energy Storage Division Laboratory of Advanced Batteries(LAB)Center for Innovation on New Energies(CINE)School of Chemical EngineeringUniversity of Campinas(Unicamp)CampinasSao Paulo 13083-852Brazil Advanced Energy Storage Division Center for Innovation on New Energies(CINE)Brazilian Renewable Energies(BREnergies)groupManufacturing GroupSchool of Electrical and Computer EngineeringUniversity of Campinas(UNICAMP)CampinasSão Paulo 13083-852Brazil Paul Scherrer Institut(PSI) Swiss Light Source(SLS)Forschungsstrasse 1115232 Villigen PSIAargauSwitzerland Brazilian Center for Research in Energy and Materials(CNPEM)/Brazilian Synchrotron Light Laboratory(LNLS) CampinasSão Paulo 13083-100Brazil

Batteries,fuel cells,and supercapacitors are electrochemical devices already on the market and still need a boost in kinetics to match the high energy density demand of *** have attracted the scientific community's attention in the last decade due to their electrocatalytic activity,chemical and structural properties,tunability,low cost,and *** have been made to understand the active sites and the operational mechanisms in perovskite oxides to shape them as an electrocatalyst in advanced energy *** the role of perovskites is the key to engineering more controlled and efficient electrocatalysts via chemical synthesis,and there is still much to *** review highlights the use of perovskites in different energy storage and conversion *** A,B,and A&B doping-site effects are analyzed to understand the opportunities and challenges related to this class of *** addition,the synthesis methods and the properties related to the doping site are described and summarized.

关键词： Perovskites Energy storage systems Electrocatalysts Battery Oxide fuel cells Capacitors

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A Work Domain Analysis for Network Management

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Proceedings of the Human Factors and Ergonomics Society Annual Meeting 2000年第4期44卷 469 - 472页

作者： Catherine M. Burns Ed Barsalou Cynthia Handler Johnson Kuo Kevin Harrigan Advanced Interface Design Lab Department of Systems Design Engineering University of Waterloo Department of Computer Science University of Waterloo

computer networks are pervasive and critical to the operation of today's businesses. While most of us take computer networks for granted, network managers who must configure, operate, and fix faults in computer networks face a daunting task that becomes more complex everyday. Ecological interface design has been shown to be a promising approach for complex systems such as power plants or petrochemical systems. computer networks are a very different work domain characterized by rapid technological change, extreme decentralization, and the existence of “soft” components. This paper presents the first work domain analysis of this new domain creating an abstraction hierarchy for general signal transfer systems and general computing networks. It shows how the abstraction hierarchy can be applied to this new domain and presents the initial work on an ecological interface design for network management.

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On control gain selection in PI-RED

On control gain selection in PI-RED

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2006 IEEE International Conference on Networking, Sensing and Control, ICNSC'06

作者： Naixue, Xiong Xavier, Defago Yan, Yang Yanxiang, He Jing, He Asahidai Nomi Ishikawa Japan State Key Lab. of Software Engineering Computer School Wuhan University China School of Information Science Japan Advanced Institute of Science and Technology Japan School of Computer Science and Technology Wuhan University of Science and Technology Hu Bei province China State Key Lab. of Software Engineering Computer School Wuhan University Hu Bei province China Department of Computer Science Utah State University Logan UT 84322-4205 United States

ISBN: (纸本)1424400651

Active Queue Management (AQM) is an effective method used in Internet routers to enhance congestion control, and to achieve a trade off between link utilization and delay. The de facto standard, the Random Early Detection (RED) AQM scheme, and most of its variants use queue length as a congestion indicator to trigger packet dropping. Random early detection (RED) is a widely studied active queue management (AQM) scheme implemented in routers for Internet congestion control. Although certain stability conditions for various RED controllers are discussed, no efficient method for dynamically adapting control gains or result on control gain optimization has been proposed so far. Therefore based on control theory, this paper proposes Proportional and Integral RED (PI-RED) algorithm, that not only considers the average queue length at the current time slot, but also takes into consideration the past average queue lengths within a round trip time. We provides guidelines for the selection of the feedback gains (the proportional parameter and the integral parameter) for TCP/RED system to stabilize the dynamics, make the congested queue converge at a certain target and hence to improve network performance. Simulations demonstrate that indeed satisfactory performance can be achieved if the control gains are selected based on the guidelines. Based on the stability condition and control gains selection method, extensive simulations with ns2 demonstrate that indeed satisfactory performance can be achieved in terms of robustness, drop probability and stability if the control gains are selected based on the guidelines. © 2006 IEEE.

关键词： Control system analysis

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A Decision Support Framework for the Choice of Languages and Methods for the Design of Real Time Embedded Systems

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Journal of Software engineering and Applications 2016年第7期9卷 353-397页

作者： Valéry M. Monthe Laurent Nana Georges E. Kouamou Claude Tangha Department of Computer Science University of Yaounde 1 Yaounde Cameroon Lab-STICC (UMR CNRS 6285) Department of Computer Science University of Brest Brest France Department of Computer Engineering National Advanced School of Engineering Yaounde Cameroon

The choice of methods or design languages is a crucial phase in the development of systems and software, also for real time and embedded systems. An open question that remains in the design of these types of systems is to build a method, or to choose one among those existing, capable to cover the life cycle of a project, and particularly the development phases. This article contributes to answer the question, by proposing an approach based on a multi-criteria comparative study, of few languages and methods dedicated to the design of real time and embedded systems. The underlying objective of this work is to present to designers a wide range of approaches, and elements that can guide their choices. In order to reach this goal, we propose different comparison criteria. Each criterion is divided into sub-criteria, so that the designers can refine their choices according to the qualities they prefer and wish to have in the method or language. We also define a rating scale which is used to assess the retained languages and methods. The scores obtained from this assessment are presented in tables, one table per criterion, followed by a summary table giving the overall scores. Graphics built from these tables are provided and intend to facilitate the judgement and thus the choice of the designers.

关键词： Design Method Modelling Language Real-Time System Embedded System Comparison Criteria

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