Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon)最新文献_第8页

Specification of fault current limitation level for FCLs in power systems 电力系统fcl故障限流电平规范

Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon) Pub Date : 2010-03-18 DOI: 10.1109/SECON.2010.5453879

Yucheng Zhang, R. Dougal

引用次数: 8

Effects of Gallium-Phosphide and Indium-Gallium-Antimonide semiconductor materials on photon absorption of multijunction solar cells 磷化镓和铟镓锑半导体材料对多结太阳能电池光子吸收的影响

Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon) Pub Date : 2010-03-18 DOI: 10.1109/SECON.2010.5453863

I. Bhattacharya, S. Foo

{"title":"Effects of Gallium-Phosphide and Indium-Gallium-Antimonide semiconductor materials on photon absorption of multijunction solar cells","authors":"I. Bhattacharya, S. Foo","doi":"10.1109/SECON.2010.5453863","DOIUrl":"https://doi.org/10.1109/SECON.2010.5453863","url":null,"abstract":"The main challenge in the photovoltaic industry is making the solar cells more cost effective. Single junction solar cells can only absorb a certain wavelength of the solar spectrum, hence produce less efficiency. In contrary multijunction solar cells direct sunlight towards matched spectral sensitivity by splitting the spectrum into smaller slices. The high efficiency multijunction photovoltaics made up of III-V semiconductor material alloys with high optical sensitivity and ideal combination of band-gaps increase absorption of photons, creates more electron-hole pairs, and hence increase the efficiency of the solar cell. National Renewable Energy Laboratory (NREL), US Department of Energy (DOE) and many leading research organizations all over the world are investing money in the design of III-IV multijunction solar cell projects. In this paper, we introduce a novel multijunction photovoltaic cell based on GaP/InGaAs/InGaSb, and compare it with existing single-junction and multijunction cells. We observe that the inclusion of GaP and InGaSb layers in our design has made a significant improvement in absorption of solar energy in the entire spectral range, thus resulting in higher efficiency.","PeriodicalId":286940,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123938006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 18

Simple traffic light controller: A digital systems design project 简易交通灯控制器:一个数字系统设计方案

Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon) Pub Date : 2010-03-18 DOI: 10.1109/SECON.2010.5453915

Jose Ortiz, R. Klenke

{"title":"Simple traffic light controller: A digital systems design project","authors":"Jose Ortiz, R. Klenke","doi":"10.1109/SECON.2010.5453915","DOIUrl":"https://doi.org/10.1109/SECON.2010.5453915","url":null,"abstract":"In the past few years, laboratory exercises for our Digital Systems course were typically self contained. The lack of integration prevented students from fully realizing a complete digital system during the course of the class. The simple traffic light controller design project was introduced to alleviate this shortcoming and to ensure students gain experience in solving implementation and interfacing problems of a modern digital system. Students implement a fully functional traffic signal controller for a four-way intersection. The intersection is complete with sensors to detect the presence of vehicles waiting at or approaching the intersection. The project incorporates many concepts and components that are discussed in detail throughout the course. These include FPGAs, VHDL for modeling and synthesis, finite state machines, embedded microprocessors, memory interfaces, serial communication, and signal synchronization. A bottom-up with a partially specified design methodology is used to encourage students to use their breadth of knowledge and creativity. By the end of the project, students will have gained a better understanding of digital system design methodologies through hands-on experience.","PeriodicalId":286940,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124196929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

An integrated, semi-automated approach to thermochemical conversion research for sustainable farming systems 可持续农业系统热化学转化研究的综合、半自动化方法

Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon) Pub Date : 2010-03-18 DOI: 10.1109/SECON.2010.5453812

K. Cantrell, J. H. Martin

引用次数: 0

GaN as a neutron detection material 氮化镓作为中子探测材料

Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon) Pub Date : 2010-03-18 DOI: 10.1109/SECON.2010.5453842

A. Melton, E. Burgett, M. Jamil, T. Zaidi, N. Hertel, I. Ferguson

引用次数: 7

Edge detection using fast Bidimensional Empirical Mode Decomposition and mathematical morphology 利用快速二维经验模态分解和数学形态学进行边缘检测

Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon) Pub Date : 2010-03-18 DOI: 10.1109/SECON.2010.5453903

James Z. Zhang, Zijing Qin

引用次数: 5

Artificial chromosomes as genetic disks: A systems software metaphor for genetic engineering 作为遗传磁盘的人工染色体:基因工程的系统软件隐喻

Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon) Pub Date : 2010-03-18 DOI: 10.1109/SECON.2010.5453861

N. Ackovska, L. Bozinovska, S. Bozinovski

引用次数: 2

Thermal analysis and verification of a mounted monolithic integrated circuit 单片集成电路的热分析与验证

Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon) Pub Date : 2010-03-18 DOI: 10.1109/SECON.2010.5453924

T. R. Harris, S. Melamed, S. Luniya, W. R. Davis, M. Steer, L. Doxsee, Kurt Obermiller, Chad Hawkinson

{"title":"Thermal analysis and verification of a mounted monolithic integrated circuit","authors":"T. R. Harris, S. Melamed, S. Luniya, W. R. Davis, M. Steer, L. Doxsee, Kurt Obermiller, Chad Hawkinson","doi":"10.1109/SECON.2010.5453924","DOIUrl":"https://doi.org/10.1109/SECON.2010.5453924","url":null,"abstract":"As circuit density increases and high-power applications are facilitated, thermal considerations become paramount a design concern. In this paper, a high power monolithic microwave integrated circuit (MMIC) is modeled by the fREEDA multi-physics simulator and measured for validation. While validation is the crux of any simulation model, it is known that thermal measurements accurate to a high resolution are problematic. As such, the thermal profile of integrated circuits cannot be measured directly with infrared thermal imaging due to unequivalent emissivities of materials. It becomes necessary to use an absorptive ink to approximate a blackbody so that the infrared emissions can be used to infer temperature. The impact and effect of this thermal imaging technique is investigated in this work by comparing measurements with detailed thermal simulations with and without the surface treatment. Thermal analysis uses the finite element method and a reduced-order model based on cuboids with effective thermal conductivities. The end goal is to provide a simulation tool to designers, which can be extended to any project which requires attention to thermal preference.","PeriodicalId":286940,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126736860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Determination of friction coefficients for cutting brush — road surface interaction through FEM 用有限元法确定切削刷-路面相互作用摩擦系数

Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon) Pub Date : 2010-03-18 DOI: 10.1109/SECON.2010.5453917

L. V. Useche, M. Wahab, G. Parker

{"title":"Determination of friction coefficients for cutting brush — road surface interaction through FEM","authors":"L. V. Useche, M. Wahab, G. Parker","doi":"10.1109/SECON.2010.5453917","DOIUrl":"https://doi.org/10.1109/SECON.2010.5453917","url":null,"abstract":"A novel Finite Element Model (FEM) is used to determine the coefficients of friction between the bristles of a cutting brush of street sweepers and a concrete road surface. The model deals with brush dynamics and entails a 3-D transient non-linear structural analysis involving contact. Each row of clusters is modeled by a single beam. The beams are subjected to inertia forces, and the surface is rotated and raised until the required penetration is achieved. Values of the friction coefficients are calculated for three rotational speeds: 60, 100, and 140 r/min. Transient effects are rapidly damped out and the coefficients of friction can be determined with accuracy. In order to obtain these, experimental results in [1] are compared to those of this work. It is concluded that the FEM is valid, and it is corroborated that, contrary to a flicking brush, the brush vertical force is not affected significantly by the coefficient of friction. Finally, it is found that the coefficients of friction, which are obtained from torque results, depend on the sliding velocity. The results were fitted to an exponential curve that corresponds to μs = 0.70, μk = 0.27, and cv = 0.40 s/m.","PeriodicalId":286940,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126985314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

A comparative study of CyberCIEGE game and Department of Defense Information Assurance Awareness video CyberCIEGE游戏与国防部信息保障意识视频的比较研究

Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon) Pub Date : 2010-03-18 DOI: 10.1109/SECON.2010.5453895

Jonathan Jones, Xiaohong Yuan, Edward Carr, Huiming Yu

引用次数: 15