Pub Date : 2010-03-18DOI: 10.1109/SECON.2010.5453837
U. Shahid, M. Fiddy
Recent advances in methods to invert data from strongly scattering targets has revealed the need to rethink how best to sample the scattered field. For strongly scattering targets, the inversion procedure is inherently nonlinear and we show that usual sampling procedures based on Shannon sampling concepts are inadequate and some prior knowledge of the maximum permittivity or refractive index of the target plays an important role.
{"title":"New insights into sampling strategies for imaging strongly scattering targets","authors":"U. Shahid, M. Fiddy","doi":"10.1109/SECON.2010.5453837","DOIUrl":"https://doi.org/10.1109/SECON.2010.5453837","url":null,"abstract":"Recent advances in methods to invert data from strongly scattering targets has revealed the need to rethink how best to sample the scattered field. For strongly scattering targets, the inversion procedure is inherently nonlinear and we show that usual sampling procedures based on Shannon sampling concepts are inadequate and some prior knowledge of the maximum permittivity or refractive index of the target plays an important role.","PeriodicalId":286940,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon)","volume":"7 4 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":"122906494","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 : 2010-03-18DOI: 10.1109/SECON.2010.5453869
A. Amanna, Jeffrey H. Reed
Cognitive Radio and Cognitive Networking are emerging fields of research that has the potential for transformative changes to the current status quo. Cognitive systems utilize environmental observations such as spectrum or network conditions to change operational configurations in order to optimize performance at individual node or over end-to-end goals. This paper surveys some of these origin cognitive frameworks and correlates these frameworks to cognitive radio implementations of today. Several definitive implementations and cognitive radio architectures are reviewed and compared. This paper also identifies area of need and suggests directions forward for novel research in this area through interdisciplinary collaboration with the cognitive sciences, integrating prediction and proactive operation into cognitive radio/network architectures and identifying less researched artificial intelligence algorithms that show promise towards cognitive radio architecture.
{"title":"Survey of cognitive radio architectures","authors":"A. Amanna, Jeffrey H. Reed","doi":"10.1109/SECON.2010.5453869","DOIUrl":"https://doi.org/10.1109/SECON.2010.5453869","url":null,"abstract":"Cognitive Radio and Cognitive Networking are emerging fields of research that has the potential for transformative changes to the current status quo. Cognitive systems utilize environmental observations such as spectrum or network conditions to change operational configurations in order to optimize performance at individual node or over end-to-end goals. This paper surveys some of these origin cognitive frameworks and correlates these frameworks to cognitive radio implementations of today. Several definitive implementations and cognitive radio architectures are reviewed and compared. This paper also identifies area of need and suggests directions forward for novel research in this area through interdisciplinary collaboration with the cognitive sciences, integrating prediction and proactive operation into cognitive radio/network architectures and identifying less researched artificial intelligence algorithms that show promise towards cognitive radio architecture.","PeriodicalId":286940,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon)","volume":"2 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":"131377460","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 : 2010-03-18DOI: 10.1109/SECON.2010.5453907
A. Panday, B. Joshi, A. Ravindran, Jong-Ho Byun, H. Zaveri
High performance computing is becoming critical in the medical area to aid real-time processing of complex analysis of biological signals. In this paper parallel schemes for real-time computations of pair-wise correlation (PWC) of electroencephalogram (EEG) signals, which belongs to streaming-data class of applications, are proposed and implemented and their performances are evaluated. Currently most of the EEG based diagnosis for epilepsy is done off-line. However, there is a growing need to perform these diagnoses in real-time to aid health care providers, including surgeons, in decision-making process that will lead to improved quality of life and prevent undesirable consequences, such as readmission to hospitals resulting in prolonged suffering and higher health care costs. Systematic study of the PWC problem and the IBM Cell Broadband Engine (CBE) architecture led us to a model that is well suited for the Cell architecture and GPUs. Measurements on the CBE indicate that speedup of 33.91 is possible over the serial code running on Intel Xeon processor and the schemes can be used for real-time signal processing.
{"title":"Study of data locality for real-time biomedical signal processing of streaming data on Cell Broadband Engine","authors":"A. Panday, B. Joshi, A. Ravindran, Jong-Ho Byun, H. Zaveri","doi":"10.1109/SECON.2010.5453907","DOIUrl":"https://doi.org/10.1109/SECON.2010.5453907","url":null,"abstract":"High performance computing is becoming critical in the medical area to aid real-time processing of complex analysis of biological signals. In this paper parallel schemes for real-time computations of pair-wise correlation (PWC) of electroencephalogram (EEG) signals, which belongs to streaming-data class of applications, are proposed and implemented and their performances are evaluated. Currently most of the EEG based diagnosis for epilepsy is done off-line. However, there is a growing need to perform these diagnoses in real-time to aid health care providers, including surgeons, in decision-making process that will lead to improved quality of life and prevent undesirable consequences, such as readmission to hospitals resulting in prolonged suffering and higher health care costs. Systematic study of the PWC problem and the IBM Cell Broadband Engine (CBE) architecture led us to a model that is well suited for the Cell architecture and GPUs. Measurements on the CBE indicate that speedup of 33.91 is possible over the serial code running on Intel Xeon processor and the schemes can be used for real-time signal processing.","PeriodicalId":286940,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon)","volume":"80 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":"126983107","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 : 2010-03-18DOI: 10.1109/SECON.2010.5453845
T. Olivo
This paper is a guide to solving some introductory problems encountered when considering ultra capacitors as an energy storage solution for power electronics. The methods used here can be used by the engineer to find solutions for many other applications that can not be found with conventional calculus.
{"title":"Analysis of ultra capacitors as UPS energy storage devices","authors":"T. Olivo","doi":"10.1109/SECON.2010.5453845","DOIUrl":"https://doi.org/10.1109/SECON.2010.5453845","url":null,"abstract":"This paper is a guide to solving some introductory problems encountered when considering ultra capacitors as an energy storage solution for power electronics. The methods used here can be used by the engineer to find solutions for many other applications that can not be found with conventional calculus.","PeriodicalId":286940,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon)","volume":"22 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":"134498663","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 : 2010-03-18DOI: 10.1109/SECON.2010.5453920
S. Russ, Viswakalyan Perepa, Silas Leavesly, Bret M. Webb
Demand for embedded environmental sensors is increasing. One of the key sensor capabilities is the ability to measure salinity. In addition to understanding the environment, a salinity measurement is needed to estimate water density and to convert pressure to estimates of water depth. This outlines a low-cost sensor that combines an H-bridge and digital potentiometer to make an AC resistance measurement suitable for measuring salinity.
{"title":"Novel low-cost salinity sensor for embedded environmental monitoring","authors":"S. Russ, Viswakalyan Perepa, Silas Leavesly, Bret M. Webb","doi":"10.1109/SECON.2010.5453920","DOIUrl":"https://doi.org/10.1109/SECON.2010.5453920","url":null,"abstract":"Demand for embedded environmental sensors is increasing. One of the key sensor capabilities is the ability to measure salinity. In addition to understanding the environment, a salinity measurement is needed to estimate water density and to convert pressure to estimates of water depth. This outlines a low-cost sensor that combines an H-bridge and digital potentiometer to make an AC resistance measurement suitable for measuring salinity.","PeriodicalId":286940,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon)","volume":"21 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":"131819077","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 : 2010-03-18DOI: 10.1109/SECON.2010.5453848
N. M. Rabadi
In Vehicle-to-Vehicle (V2V) communication networks, vehicles will broadcast their safety-critical information, such as speed, position and direction, to alert nearby vehicles of possible collisions. The use of a standard public key certificate to secure the broadcast of the safety-critical information will allow unauthorized entities to identify and trace movements and locations a driver visits using the driver's unique public key in the certificate. In this paper, we propose a self-certified public key implicit certificate scheme for use in V2V communication networks to preserve the anonymity of drivers. In our proposed scheme, recipients of a broadcasted message in V2V communication networks can authenticate and validate the integrity of the message without identifying the transmitter. In case of a dispute and malicious activities, the identity of the vehicle which broadcasted the disputed message can be revealed only by a trusted authority. Using an elliptic-curve key-length of 256 bits, we show that our proposed scheme adds 238 bytes to the vehicle's safety-critical information in the broadcasted message.
{"title":"Self-certified public key implicit certificate scheme for drivers' anonymity in Vehicle-to-Vehicle communication networks","authors":"N. M. Rabadi","doi":"10.1109/SECON.2010.5453848","DOIUrl":"https://doi.org/10.1109/SECON.2010.5453848","url":null,"abstract":"In Vehicle-to-Vehicle (V2V) communication networks, vehicles will broadcast their safety-critical information, such as speed, position and direction, to alert nearby vehicles of possible collisions. The use of a standard public key certificate to secure the broadcast of the safety-critical information will allow unauthorized entities to identify and trace movements and locations a driver visits using the driver's unique public key in the certificate. In this paper, we propose a self-certified public key implicit certificate scheme for use in V2V communication networks to preserve the anonymity of drivers. In our proposed scheme, recipients of a broadcasted message in V2V communication networks can authenticate and validate the integrity of the message without identifying the transmitter. In case of a dispute and malicious activities, the identity of the vehicle which broadcasted the disputed message can be revealed only by a trusted authority. Using an elliptic-curve key-length of 256 bits, we show that our proposed scheme adds 238 bytes to the vehicle's safety-critical information in the broadcasted message.","PeriodicalId":286940,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon)","volume":"12 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":"117313093","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 : 2010-03-18DOI: 10.1109/SECON.2010.5453892
Rebecca F. Bruce, Susan Reiser
This paper describes a compilation of projects designed to provide hands-on experience with technology for first semester freshman. All projects engage students in engineering design within an active learning environment. Each project has been crafted to increase the academic success and retention of freshman by challenging them to master engineering design while facilitating their success. The learning outcomes associated with these projects include an increased awareness of social responsibility, improved communication skills, experience in system design and project management, increased effectiveness in teamwork practices, and the development of a student community. These projects have been situated in the new Integrated Liberal Studies program at UNC Asheville, but they could be offered as part of any engineering program in support of ABET accreditation requirements.
{"title":"Take chances, make mistakes, get dirty","authors":"Rebecca F. Bruce, Susan Reiser","doi":"10.1109/SECON.2010.5453892","DOIUrl":"https://doi.org/10.1109/SECON.2010.5453892","url":null,"abstract":"This paper describes a compilation of projects designed to provide hands-on experience with technology for first semester freshman. All projects engage students in engineering design within an active learning environment. Each project has been crafted to increase the academic success and retention of freshman by challenging them to master engineering design while facilitating their success. The learning outcomes associated with these projects include an increased awareness of social responsibility, improved communication skills, experience in system design and project management, increased effectiveness in teamwork practices, and the development of a student community. These projects have been situated in the new Integrated Liberal Studies program at UNC Asheville, but they could be offered as part of any engineering program in support of ABET accreditation requirements.","PeriodicalId":286940,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon)","volume":"123 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":"116178117","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 : 2010-03-18DOI: 10.1109/SECON.2010.5453823
M. Cheng, S. Salekeen, E. Bakhoum, Cheng-Yi Chen
This paper investigate on motion synchronization of multiple axes systems. Two different control strategies, a cross-coupling controller in feedback loop and an adaptive controller, were used to synthesize the synchronization compensator with the cross-coupling dynamics among the axes. By using these strategies, the asymptotic convergence of both tracking and synchronization errors are achieved. The comparison of the two controllers of the nominal plant is discussed. Experimental results of a three-axis motion system that include system uncertainties are also illustrated to verify the effectiveness of the proposed approach.
{"title":"Adaptive control of sychronization for multi-axis motion system","authors":"M. Cheng, S. Salekeen, E. Bakhoum, Cheng-Yi Chen","doi":"10.1109/SECON.2010.5453823","DOIUrl":"https://doi.org/10.1109/SECON.2010.5453823","url":null,"abstract":"This paper investigate on motion synchronization of multiple axes systems. Two different control strategies, a cross-coupling controller in feedback loop and an adaptive controller, were used to synthesize the synchronization compensator with the cross-coupling dynamics among the axes. By using these strategies, the asymptotic convergence of both tracking and synchronization errors are achieved. The comparison of the two controllers of the nominal plant is discussed. Experimental results of a three-axis motion system that include system uncertainties are also illustrated to verify the effectiveness of the proposed approach.","PeriodicalId":286940,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon)","volume":"50 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":"122689975","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 : 2010-03-18DOI: 10.1109/SECON.2010.5453931
M. Rani, A. Asaduzzaman
Designing efficient cache, memory, and storage subsystem for modern embedded systems supporting a variety of applications is a great need. Embedded systems are being deployed with multicore processors to help parallel and distributed computing in order to meet the requirements for increased processing speed. Multiple cores offer manifold options to organize multi-level caches. A mixture of cache memory hierarchies are proposed to satisfy the requirements of high-performance low-power multicore embedded systems. In this paper, we investigate the impact of CL2 organizations on the performance and power consumption for multicore embedded systems. We simulate two 4-core architectures, one with shared CL2 and the other one with private CL2s. We use MPEG4, FFT, MI, and DFT applications/algorithms in our experiment. Simulation results depict that the mean delay and total power consumption significantly vary with the variations of CL2 organization and applications. It is observed that reductions in total power consumption and mean delay per task of up to 43% and 36%, respectively, are possible with optimized CL2, with an optimal choice of 256KB CL2 cache, 64 B CL2 line size, and 8-way CL2 associativity level.
为支持各种应用的现代嵌入式系统设计高效的缓存、内存和存储子系统是一个巨大的需求。嵌入式系统正在部署多核处理器，以帮助并行和分布式计算，以满足提高处理速度的要求。多核提供了多种选择来组织多级缓存。为了满足高性能、低功耗多核嵌入式系统的要求，提出了一种混合缓存层次结构。在本文中，我们研究了CL2组织对多核嵌入式系统的性能和功耗的影响。我们模拟了两个4核架构，一个使用共享CL2，另一个使用私有CL2。我们在实验中使用了MPEG4、FFT、MI和DFT应用/算法。仿真结果表明，随着CL2结构和应用的不同，平均时延和总功耗有显著的变化。可以观察到，使用优化的CL2，在256KB CL2缓存、64 B CL2线路大小和8路CL2关联级别的最佳选择下，每个任务的总功耗和平均延迟分别降低43%和36%。
{"title":"Power aware design of second level cache for multicore embedded systems","authors":"M. Rani, A. Asaduzzaman","doi":"10.1109/SECON.2010.5453931","DOIUrl":"https://doi.org/10.1109/SECON.2010.5453931","url":null,"abstract":"Designing efficient cache, memory, and storage subsystem for modern embedded systems supporting a variety of applications is a great need. Embedded systems are being deployed with multicore processors to help parallel and distributed computing in order to meet the requirements for increased processing speed. Multiple cores offer manifold options to organize multi-level caches. A mixture of cache memory hierarchies are proposed to satisfy the requirements of high-performance low-power multicore embedded systems. In this paper, we investigate the impact of CL2 organizations on the performance and power consumption for multicore embedded systems. We simulate two 4-core architectures, one with shared CL2 and the other one with private CL2s. We use MPEG4, FFT, MI, and DFT applications/algorithms in our experiment. Simulation results depict that the mean delay and total power consumption significantly vary with the variations of CL2 organization and applications. It is observed that reductions in total power consumption and mean delay per task of up to 43% and 36%, respectively, are possible with optimized CL2, with an optimal choice of 256KB CL2 cache, 64 B CL2 line size, and 8-way CL2 associativity level.","PeriodicalId":286940,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon)","volume":"8 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":"127985478","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 : 2010-03-18DOI: 10.1109/SECON.2010.5453912
Z. W. Dziczkowski, B. Geltz, T. V. Trimeloni, J. A. Berlier, J. M. McCollum
In electrical and computer engineering, prototyping is a process through which an original concept is represented in a physical system. Creating such a prototype might only necessitate the use of a soldering iron, but specialized equipment can facilitate or in some cases be requisite for complex designs and smaller component packages. This equipment, however, can be prohibitively expensive. This paper proposes a machine which eliminates most of the above issues, a computer numerically-controlled (CNC) solder paste dispenser. To apply solder paste to a design, the machine uses a X/Y gantry to precisely position a syringe of paste and dispense a measured amount.
{"title":"A low-cost solution for automated solder paste application","authors":"Z. W. Dziczkowski, B. Geltz, T. V. Trimeloni, J. A. Berlier, J. M. McCollum","doi":"10.1109/SECON.2010.5453912","DOIUrl":"https://doi.org/10.1109/SECON.2010.5453912","url":null,"abstract":"In electrical and computer engineering, prototyping is a process through which an original concept is represented in a physical system. Creating such a prototype might only necessitate the use of a soldering iron, but specialized equipment can facilitate or in some cases be requisite for complex designs and smaller component packages. This equipment, however, can be prohibitively expensive. This paper proposes a machine which eliminates most of the above issues, a computer numerically-controlled (CNC) solder paste dispenser. To apply solder paste to a design, the machine uses a X/Y gantry to precisely position a syringe of paste and dispense a measured amount.","PeriodicalId":286940,"journal":{"name":"Proceedings of the IEEE SoutheastCon 2010 (SoutheastCon)","volume":"153 3 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":"125895962","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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