Pub Date : 2008-04-03DOI: 10.1109/SECON.2008.4494272
Zhen Hu, D. Singh, R. Qiu
Wireless communication in confined metal environment such as rectangular metal cavity is challenging. The channel characteristics in such an environment are different from those in the traditional wireless communication environments. Ultra-wideband (UWB) technique plus multiple input multiple output (MIMO) is a competitive candidate for wireless communication in rectangular metal cavity among possible technologies, because it can fully employ radio resources not only in frequency domain but also in space domain. This paper considers the fundamental limit from capacity point of view for UWB channel in rectangular metal cavity. We want to study what spectrum efficiencies are if MIMO and different spectrum-shaping schemes are used. The results of this paper can give us a lot of insights and guide us to design the high performance system for wireless communication in confined metal environment.
{"title":"MIMO capacity for UWB channel in rectangular metal cavity","authors":"Zhen Hu, D. Singh, R. Qiu","doi":"10.1109/SECON.2008.4494272","DOIUrl":"https://doi.org/10.1109/SECON.2008.4494272","url":null,"abstract":"Wireless communication in confined metal environment such as rectangular metal cavity is challenging. The channel characteristics in such an environment are different from those in the traditional wireless communication environments. Ultra-wideband (UWB) technique plus multiple input multiple output (MIMO) is a competitive candidate for wireless communication in rectangular metal cavity among possible technologies, because it can fully employ radio resources not only in frequency domain but also in space domain. This paper considers the fundamental limit from capacity point of view for UWB channel in rectangular metal cavity. We want to study what spectrum efficiencies are if MIMO and different spectrum-shaping schemes are used. The results of this paper can give us a lot of insights and guide us to design the high performance system for wireless communication in confined metal environment.","PeriodicalId":188817,"journal":{"name":"IEEE SoutheastCon 2008","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117187876","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}
Pub Date : 2008-04-03DOI: 10.1109/SECON.2008.4494245
P.K.R. Junga, M. Abdelrahman, C. Thurman
Among the wide range of wireless sensor network applications, many require reliable data communications such that data packets can be delivered to the destination without loss. This thesis is focused on one such application, viz. metal-fill monitoring system for the lost foam casting process implemented using capacitive sensors and Wireless Sensor Networks. Experiments were carried out in the TTU foundry to measure Radio Signal Strength and Link Quality and characterize data packet losses. The problem of packet losses associated with wireless transmission of data using wireless sensor networks with emphasis on the foundry environment has been explored and two solutions were investigated. The first is based on Delayed Retransmission and is suitable for offline monitoring. The second is for online monitoring and is based on Erasure Coding using Cauchy Reed - Solomon codes. The two solutions have been tested and evaluated for the metal-fill monitoring application. The entire system from sensing to data transmission provides a flexible and cost effective method to monitor the metal fill process.
{"title":"Algorithms for reliable data transmission for metal fill monitoring using Wireless Sensor Networks","authors":"P.K.R. Junga, M. Abdelrahman, C. Thurman","doi":"10.1109/SECON.2008.4494245","DOIUrl":"https://doi.org/10.1109/SECON.2008.4494245","url":null,"abstract":"Among the wide range of wireless sensor network applications, many require reliable data communications such that data packets can be delivered to the destination without loss. This thesis is focused on one such application, viz. metal-fill monitoring system for the lost foam casting process implemented using capacitive sensors and Wireless Sensor Networks. Experiments were carried out in the TTU foundry to measure Radio Signal Strength and Link Quality and characterize data packet losses. The problem of packet losses associated with wireless transmission of data using wireless sensor networks with emphasis on the foundry environment has been explored and two solutions were investigated. The first is based on Delayed Retransmission and is suitable for offline monitoring. The second is for online monitoring and is based on Erasure Coding using Cauchy Reed - Solomon codes. The two solutions have been tested and evaluated for the metal-fill monitoring application. The entire system from sensing to data transmission provides a flexible and cost effective method to monitor the metal fill process.","PeriodicalId":188817,"journal":{"name":"IEEE SoutheastCon 2008","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120938403","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}
Pub Date : 2008-04-03DOI: 10.1109/SECON.2008.4494281
V.R. Naini, R. Sadasivam, M. Tanik
The use of open source frameworks and tools has become popular in Java development. These frameworks and tools have core strengths and weaknesses and are selected accordingly for development. Consequently, one of the key issues that developers face is to integrate and configure these tools together. This paper demonstrates the use of popular Java frameworks and tools to develop a Web-based interactive Student Registration and Advising system.
{"title":"A Web-based interactive Student Advising system using Java frameworks","authors":"V.R. Naini, R. Sadasivam, M. Tanik","doi":"10.1109/SECON.2008.4494281","DOIUrl":"https://doi.org/10.1109/SECON.2008.4494281","url":null,"abstract":"The use of open source frameworks and tools has become popular in Java development. These frameworks and tools have core strengths and weaknesses and are selected accordingly for development. Consequently, one of the key issues that developers face is to integrate and configure these tools together. This paper demonstrates the use of popular Java frameworks and tools to develop a Web-based interactive Student Registration and Advising system.","PeriodicalId":188817,"journal":{"name":"IEEE SoutheastCon 2008","volume":"16 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114050105","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}
Pub Date : 2008-04-03DOI: 10.1109/SECON.2008.4494329
W. Atkinson, D. Hansen, D. Sunderland, W. Seidler
The model Total Space and Atmospheric Radiation Effects on Microelectronics (TSAREME) developed at Boeing was applied in evaluating the hardness of submicron integrated circuits (ICs) to space radiation causing single event effects (SEEs). TSAREME computed the Soft Error Rate (SER) as accurate as 6% to measured values of a 0.25 micron SRAM node in geosynchronous orbit. Results indicated that the SER can be overestimated by a factor of ~4 when only the active silicon volume (SV) is modeled, indicating that materials in components surrounding the SV absorb a large fraction (~3/4) of the ions. Also, analysis results indicated that the SER values at solar minimum increased by 60% when the contributions from secondary ions are included when only the SV was considered. When the entire node was modeled, the SERs increased by only 15% when secondary ions were included.
{"title":"TSAREME, a comprehensive tool in evaluating radiation hardness of submicron technologies","authors":"W. Atkinson, D. Hansen, D. Sunderland, W. Seidler","doi":"10.1109/SECON.2008.4494329","DOIUrl":"https://doi.org/10.1109/SECON.2008.4494329","url":null,"abstract":"The model Total Space and Atmospheric Radiation Effects on Microelectronics (TSAREME) developed at Boeing was applied in evaluating the hardness of submicron integrated circuits (ICs) to space radiation causing single event effects (SEEs). TSAREME computed the Soft Error Rate (SER) as accurate as 6% to measured values of a 0.25 micron SRAM node in geosynchronous orbit. Results indicated that the SER can be overestimated by a factor of ~4 when only the active silicon volume (SV) is modeled, indicating that materials in components surrounding the SV absorb a large fraction (~3/4) of the ions. Also, analysis results indicated that the SER values at solar minimum increased by 60% when the contributions from secondary ions are included when only the SV was considered. When the entire node was modeled, the SERs increased by only 15% when secondary ions were included.","PeriodicalId":188817,"journal":{"name":"IEEE SoutheastCon 2008","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129658605","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}
Pub Date : 2008-04-03DOI: 10.1109/SECON.2008.4494312
Muhammad Ghanbari
Information visualization has progressed and taken big steps in previous decade, despite challenging complexities of presenting and transforming the data. Visualization binds the perceptual capabilities of the human visual system. In the data, Human being looks for structure, pattern, features, anomalies, and relationship. Visualization, support this by preparing the data in a way to drive particular sense that differentiate various interactions and understanding. How human being receives and interacts with a visualization tools, can strongly influences his understanding of the data as well as the system's usefulness. Therefore, understanding the tools, relationships, and how well be able to depict the blue print of the model in mind, is not an easy task. Too often, successful decision-making and analysis are more a matter of serendipity and user experience than of intentional design and specific support for such a task [2]. We need better metrics and benchmark repositories to compare tools, and we should also seek reports of successful adoption and demonstrated utility. Moreover, there is a large range of target audience with different background and therefore, examining the concept, data, and analytic methodologies for these class of audience also is a big step in the right way. Furthermore, we also should consider how tools -for transformation and presentation - can improve mental activities of developer. This mental support has been defined as ";cognitive support"; [3]. So, are we able to explicitly state and compare claims about how particular tool support cognition? Are there capable theories for backdrop, onto which suitable theories and claims can be painted? Unfortunately, there are too many factors and relations which we should consider in order to be able to have a clear cut of measuring the relationships and their boundaries. In this paper, I'll try to open the question and shed on some important and very difficult aspect of visualization evaluation.
{"title":"Scalability of visualization’s evaluation:","authors":"Muhammad Ghanbari","doi":"10.1109/SECON.2008.4494312","DOIUrl":"https://doi.org/10.1109/SECON.2008.4494312","url":null,"abstract":"Information visualization has progressed and taken big steps in previous decade, despite challenging complexities of presenting and transforming the data. Visualization binds the perceptual capabilities of the human visual system. In the data, Human being looks for structure, pattern, features, anomalies, and relationship. Visualization, support this by preparing the data in a way to drive particular sense that differentiate various interactions and understanding. How human being receives and interacts with a visualization tools, can strongly influences his understanding of the data as well as the system's usefulness. Therefore, understanding the tools, relationships, and how well be able to depict the blue print of the model in mind, is not an easy task. Too often, successful decision-making and analysis are more a matter of serendipity and user experience than of intentional design and specific support for such a task [2]. We need better metrics and benchmark repositories to compare tools, and we should also seek reports of successful adoption and demonstrated utility. Moreover, there is a large range of target audience with different background and therefore, examining the concept, data, and analytic methodologies for these class of audience also is a big step in the right way. Furthermore, we also should consider how tools -for transformation and presentation - can improve mental activities of developer. This mental support has been defined as \";cognitive support\"; [3]. So, are we able to explicitly state and compare claims about how particular tool support cognition? Are there capable theories for backdrop, onto which suitable theories and claims can be painted? Unfortunately, there are too many factors and relations which we should consider in order to be able to have a clear cut of measuring the relationships and their boundaries. In this paper, I'll try to open the question and shed on some important and very difficult aspect of visualization evaluation.","PeriodicalId":188817,"journal":{"name":"IEEE SoutheastCon 2008","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130615446","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}
Pub Date : 2008-04-03DOI: 10.1109/SECON.2008.4494360
Shantilal, K. D. Donohue, Bruce F. O'Hara
This work examines the application of a Support Vector Machine (SVM) classifier to automatically detect sleep and wake behaviors in mice based on pressure signals generated by contact with the cage floor. Previous works employed Neural Networks (NN) and Linear Discriminant Analysis (LDA) to classify sleep and wake behaviors. Although the LDA was successful in distinguishing between the sleep and wake behaviors, it has several limitations, which include the need to select a threshold and difficulty separating additional behaviors with subtle differences, such as sleep and rest. The SVM has advantages in that it does not require an independent threshold determination and offers greater degrees of freedom than the LDA for working with complex data sets. In addition, the SVM has direct methods for limiting overfitting for the training sets (unlike the NN method). This paper develops an SVM classifier using a variety of features extracted from the power spectrum, autocorrelation function, and generalized spectrum (autocorrelation of complex spectrum). A genetic algorithm (GA) optimizes the SVM parameters and determines a combination of 5 best features. Experimental results from over 14 hours of data scored by human observation indicate a 95% classification accuracy for SVM.
{"title":"SVM for automatic rodent sleep-wake classification","authors":"Shantilal, K. D. Donohue, Bruce F. O'Hara","doi":"10.1109/SECON.2008.4494360","DOIUrl":"https://doi.org/10.1109/SECON.2008.4494360","url":null,"abstract":"This work examines the application of a Support Vector Machine (SVM) classifier to automatically detect sleep and wake behaviors in mice based on pressure signals generated by contact with the cage floor. Previous works employed Neural Networks (NN) and Linear Discriminant Analysis (LDA) to classify sleep and wake behaviors. Although the LDA was successful in distinguishing between the sleep and wake behaviors, it has several limitations, which include the need to select a threshold and difficulty separating additional behaviors with subtle differences, such as sleep and rest. The SVM has advantages in that it does not require an independent threshold determination and offers greater degrees of freedom than the LDA for working with complex data sets. In addition, the SVM has direct methods for limiting overfitting for the training sets (unlike the NN method). This paper develops an SVM classifier using a variety of features extracted from the power spectrum, autocorrelation function, and generalized spectrum (autocorrelation of complex spectrum). A genetic algorithm (GA) optimizes the SVM parameters and determines a combination of 5 best features. Experimental results from over 14 hours of data scored by human observation indicate a 95% classification accuracy for SVM.","PeriodicalId":188817,"journal":{"name":"IEEE SoutheastCon 2008","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114313361","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}
Pub Date : 2008-04-03DOI: 10.1109/SECON.2008.4494248
N. Islam, A. Zaman, Jiehong Wu
We have developed an integrated Complementary Metal Oxide Semiconductor (CMOS) feedback circuit for the control of micropump velocity. The whole concept is to develop a signal processing unit which is accomplished with a current-to-frequency converter circuit. The operational transconductance amplifier (OTA) was used as an amplifier, which retrieve the small current from the biased micropump and convert it to voltage. The main goal is to get a digital output corresponding to the micropump velocity which will control the integrated micropump. The signal processing unit with lower power consumption is fabricated in the 0.35 mum process. The micropump for lab-on-a-chip applications is also fabricated with MEMS (micro-electro-mechanical systems)-compatible semiconductor micro-fabrication.
{"title":"Feedback control circuit for biased AC electroosmosis micropump","authors":"N. Islam, A. Zaman, Jiehong Wu","doi":"10.1109/SECON.2008.4494248","DOIUrl":"https://doi.org/10.1109/SECON.2008.4494248","url":null,"abstract":"We have developed an integrated Complementary Metal Oxide Semiconductor (CMOS) feedback circuit for the control of micropump velocity. The whole concept is to develop a signal processing unit which is accomplished with a current-to-frequency converter circuit. The operational transconductance amplifier (OTA) was used as an amplifier, which retrieve the small current from the biased micropump and convert it to voltage. The main goal is to get a digital output corresponding to the micropump velocity which will control the integrated micropump. The signal processing unit with lower power consumption is fabricated in the 0.35 mum process. The micropump for lab-on-a-chip applications is also fabricated with MEMS (micro-electro-mechanical systems)-compatible semiconductor micro-fabrication.","PeriodicalId":188817,"journal":{"name":"IEEE SoutheastCon 2008","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121689694","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}
Pub Date : 2008-04-03DOI: 10.1109/SECON.2008.4494291
O. Aktunc, S. Dronavalli, M. Tanik
The World Wide Web is playing a vital role in today's digital world. Most enterprises are becoming digital. Also, students and regular web users are turning their personal Web sites into small digital enterprises. Therefore, it is necessary to make the process of developing digital enterprises as automated as possible. A feasible way to build a digital enterprise is to use an appropriate content management system, which automates most of the application requirements. A few case studies are reported in this paper to explain how the rapid prototyping process can be made easier using content management systems. These case studies include rebuilding an existing Web site (ETD) by enhancing its features and building a prototype for a proposed Web site (SEBE and SDPS).
{"title":"Rapid prototyping of digital enterprises using content management systems","authors":"O. Aktunc, S. Dronavalli, M. Tanik","doi":"10.1109/SECON.2008.4494291","DOIUrl":"https://doi.org/10.1109/SECON.2008.4494291","url":null,"abstract":"The World Wide Web is playing a vital role in today's digital world. Most enterprises are becoming digital. Also, students and regular web users are turning their personal Web sites into small digital enterprises. Therefore, it is necessary to make the process of developing digital enterprises as automated as possible. A feasible way to build a digital enterprise is to use an appropriate content management system, which automates most of the application requirements. A few case studies are reported in this paper to explain how the rapid prototyping process can be made easier using content management systems. These case studies include rebuilding an existing Web site (ETD) by enhancing its features and building a prototype for a proposed Web site (SEBE and SDPS).","PeriodicalId":188817,"journal":{"name":"IEEE SoutheastCon 2008","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122009496","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}
Pub Date : 2008-04-03DOI: 10.1109/SECON.2008.4494306
Jinchun Feng, C. McCurry, S. Zein-Sabatto
As more advanced control algorithms are becoming available for the control of robotic arms, traditional fixed controller boards and associated code generators are becoming less convenient way to test such control algorithms in real-time. The process of using such boards is complex, time consuming, and inflexible. In this work, an integrated hardware-software environment was developed and presented where researchers can simply use any Matlab/Simulink basic function block and/or toolbox, such as fuzzy logic or neural network, to design, implement, and test different controller algorithms in realtime for robotic arm operations. The hardware includes a computer, the dSPACE-ds1103 digital processing board, an amplifier board, and the Zebra-ZERO robotics arm as a test-bed. Also, Matlab GUI, m-file, Matlab/Simulink blocks, and dSPACE interface functions are combined together to form the software environment. Control algorithms can be designed in the Matlab/Simulink then converted to c-code and download to the dSPACE processing board. The Matlab m-file are used to code the arm inverse kinematics model and the path planning to calculate the joint angles then send them to the dSPACE processing board using the dSPACE interface functions. Finally, the dSPACE processing board generates physical signal to control the robot arm in real-time. The proposed hardware-software components are developed and integrated together, and several control algorithms can be tested on it. The development steps and some of the realtime testing results conducted on the hardware are explained next in this extended abstract. Typically, controllers are designed to run on dedicated hardware and researchers need different hardware to test different control strategies. This can be costly and time consuming where one has to develop different control environment for every control strategy to be tested. In this work, an integrated hardware-software environment was developed for implementation and testing of different control algorithms in real-time. The integrated system is composed of a computer, a power supply, the DS1103 dSPACE controller board, an amplifier, and the Zebra- Zero force robotics arm. The computer is used to send commands to the DS1103 dSPACE controller board.Inside the DS1103 dSPACE controller board, a Texas instruments DSP micro-controller performs the necessary calculation to determine the PWM signal to be generated and sent to the amplifier. The amplifier then generates the control signals that are applied to dc-motors that drive the links. The motor encoders provide feedback position signals as output. To develop the software environment, the Matlab programming environment (m-file), Matlab's graphical user interface, Simulink, and the toolbox are all employed. A user graphical interface (GUI) was designed for user convenience. The robot can be moved to the ready position then, the forward or inverse kinematical model is chosen according to the type of input data. The
{"title":"Design of an integrated environment for operation and control of robotic arms (non-reviewed)","authors":"Jinchun Feng, C. McCurry, S. Zein-Sabatto","doi":"10.1109/SECON.2008.4494306","DOIUrl":"https://doi.org/10.1109/SECON.2008.4494306","url":null,"abstract":"As more advanced control algorithms are becoming available for the control of robotic arms, traditional fixed controller boards and associated code generators are becoming less convenient way to test such control algorithms in real-time. The process of using such boards is complex, time consuming, and inflexible. In this work, an integrated hardware-software environment was developed and presented where researchers can simply use any Matlab/Simulink basic function block and/or toolbox, such as fuzzy logic or neural network, to design, implement, and test different controller algorithms in realtime for robotic arm operations. The hardware includes a computer, the dSPACE-ds1103 digital processing board, an amplifier board, and the Zebra-ZERO robotics arm as a test-bed. Also, Matlab GUI, m-file, Matlab/Simulink blocks, and dSPACE interface functions are combined together to form the software environment. Control algorithms can be designed in the Matlab/Simulink then converted to c-code and download to the dSPACE processing board. The Matlab m-file are used to code the arm inverse kinematics model and the path planning to calculate the joint angles then send them to the dSPACE processing board using the dSPACE interface functions. Finally, the dSPACE processing board generates physical signal to control the robot arm in real-time. The proposed hardware-software components are developed and integrated together, and several control algorithms can be tested on it. The development steps and some of the realtime testing results conducted on the hardware are explained next in this extended abstract. Typically, controllers are designed to run on dedicated hardware and researchers need different hardware to test different control strategies. This can be costly and time consuming where one has to develop different control environment for every control strategy to be tested. In this work, an integrated hardware-software environment was developed for implementation and testing of different control algorithms in real-time. The integrated system is composed of a computer, a power supply, the DS1103 dSPACE controller board, an amplifier, and the Zebra- Zero force robotics arm. The computer is used to send commands to the DS1103 dSPACE controller board.Inside the DS1103 dSPACE controller board, a Texas instruments DSP micro-controller performs the necessary calculation to determine the PWM signal to be generated and sent to the amplifier. The amplifier then generates the control signals that are applied to dc-motors that drive the links. The motor encoders provide feedback position signals as output. To develop the software environment, the Matlab programming environment (m-file), Matlab's graphical user interface, Simulink, and the toolbox are all employed. A user graphical interface (GUI) was designed for user convenience. The robot can be moved to the ready position then, the forward or inverse kinematical model is chosen according to the type of input data. The","PeriodicalId":188817,"journal":{"name":"IEEE SoutheastCon 2008","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122254873","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}
Pub Date : 2008-04-03DOI: 10.1109/SECON.2008.4494284
Haiying Shen, F. Ching, Ting Li, Ze Li
The rapid growth of information nowadays makes efficient information searching increasingly important for a massive database with tremendous volume of information. locally sensitive hashing (LSH) is an efficient method for searching similar records. This paper analyzes the strengths and weaknesses of LSH in a massive database and Smith-Waterman algorithm. It reveals the strengths of LSH and Smith-Waterman algorithm in the field of database searching and querying. More importantly, this paper presents an intelligent searching algorithm called LSH-SmithWaterman that intelligently integrates LSH and Smith-Waterman algorithm to utilize their strengths and exploit their fullest capacities. Simulation results show the superiority of LSH-Smith-Waterman algorithm compared to LSH in information searching. It dramatically reduces the memory and time consumption and performs accurate searching.
在信息飞速增长的今天，对于一个信息量巨大的数据库来说，高效的信息搜索变得越来越重要。局部敏感散列(LSH)是搜索相似记录的有效方法。本文分析了LSH在海量数据库中的优缺点以及Smith-Waterman算法。揭示了LSH和Smith-Waterman算法在数据库搜索和查询领域的优势。更重要的是，本文提出了一种名为LSH- smith waterman的智能搜索算法，该算法将LSH和Smith-Waterman算法智能地结合在一起，充分发挥两者的优势和潜力。仿真结果表明，LSH- smith - waterman算法在信息搜索方面优于LSH算法。它大大减少了内存和时间消耗，并执行准确的搜索。
{"title":"An intelligent Locally Sensitive Hashing based algorithm for data searching","authors":"Haiying Shen, F. Ching, Ting Li, Ze Li","doi":"10.1109/SECON.2008.4494284","DOIUrl":"https://doi.org/10.1109/SECON.2008.4494284","url":null,"abstract":"The rapid growth of information nowadays makes efficient information searching increasingly important for a massive database with tremendous volume of information. locally sensitive hashing (LSH) is an efficient method for searching similar records. This paper analyzes the strengths and weaknesses of LSH in a massive database and Smith-Waterman algorithm. It reveals the strengths of LSH and Smith-Waterman algorithm in the field of database searching and querying. More importantly, this paper presents an intelligent searching algorithm called LSH-SmithWaterman that intelligently integrates LSH and Smith-Waterman algorithm to utilize their strengths and exploit their fullest capacities. Simulation results show the superiority of LSH-Smith-Waterman algorithm compared to LSH in information searching. It dramatically reduces the memory and time consumption and performs accurate searching.","PeriodicalId":188817,"journal":{"name":"IEEE SoutheastCon 2008","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128176041","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}
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