Pub Date : 2007-03-22DOI: 10.1109/SECON.2007.342902
M. Mohan, Sen. Mem
A nonlinear dynamic system model is proposed for the bipolar mood disorder, which is characterized mood swings between manic and depressive states. The nature of the oscillation suggests that the underlying dynamics are nonlinear. The proposed model helps better understand the oscillations and how to quench them.
{"title":"Nonlinear dynamic system model of bipolar mood disorder","authors":"M. Mohan, Sen. Mem","doi":"10.1109/SECON.2007.342902","DOIUrl":"https://doi.org/10.1109/SECON.2007.342902","url":null,"abstract":"A nonlinear dynamic system model is proposed for the bipolar mood disorder, which is characterized mood swings between manic and depressive states. The nature of the oscillation suggests that the underlying dynamics are nonlinear. The proposed model helps better understand the oscillations and how to quench them.","PeriodicalId":423683,"journal":{"name":"Proceedings 2007 IEEE SoutheastCon","volume":"191 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115428722","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 : 2007-03-22DOI: 10.1109/SECON.2007.342940
N.A. Rawashdeh, O. Martinez, M. Quiroga, K. D. Donohue
This paper presents algorithms for estimating parameters that characterize weak levels of printer banding in complex images. Flat field test images are typically used as test patterns for banding evaluation; however, the images of this study contain complex image content to demonstrate the algorithm's robustness and extend the utility of these defect characterization methods. The test images are from color printers in the development phase and include multiple visible defects such as banding, grain, and streaking. The banding characterization includes an estimation of the fundamental frequency and average power extracted from local regions dominated by low frequency content where banding is likely to be most visible and offensive. Grain and mottle defects combined with other image content form a difficult noise environment from which the quasi-periodic banding characteristics must be extracted. The algorithm is based on the autocorrelation function and uses special averaging and a pre-whitening filter designed to minimize the influence of the interfering factors. Experimental results show that this method provides accurate banding frequency and power characterization even for multiple banding sequences that are present in the image test area. This new algorithm proves computationally efficient and more accurate than parameter estimates based on frequency domain analysis using the power spectrum. Experimental results show accurate banding characterizations for periods ranging between 0.93 and 10.5 mm over a range of banding-to-noise ratios from 5.5 to -6.5 dB.
{"title":"Characterization of printer banding in regions of complex image content","authors":"N.A. Rawashdeh, O. Martinez, M. Quiroga, K. D. Donohue","doi":"10.1109/SECON.2007.342940","DOIUrl":"https://doi.org/10.1109/SECON.2007.342940","url":null,"abstract":"This paper presents algorithms for estimating parameters that characterize weak levels of printer banding in complex images. Flat field test images are typically used as test patterns for banding evaluation; however, the images of this study contain complex image content to demonstrate the algorithm's robustness and extend the utility of these defect characterization methods. The test images are from color printers in the development phase and include multiple visible defects such as banding, grain, and streaking. The banding characterization includes an estimation of the fundamental frequency and average power extracted from local regions dominated by low frequency content where banding is likely to be most visible and offensive. Grain and mottle defects combined with other image content form a difficult noise environment from which the quasi-periodic banding characteristics must be extracted. The algorithm is based on the autocorrelation function and uses special averaging and a pre-whitening filter designed to minimize the influence of the interfering factors. Experimental results show that this method provides accurate banding frequency and power characterization even for multiple banding sequences that are present in the image test area. This new algorithm proves computationally efficient and more accurate than parameter estimates based on frequency domain analysis using the power spectrum. Experimental results show accurate banding characterizations for periods ranging between 0.93 and 10.5 mm over a range of banding-to-noise ratios from 5.5 to -6.5 dB.","PeriodicalId":423683,"journal":{"name":"Proceedings 2007 IEEE SoutheastCon","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114867105","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 : 2007-03-22DOI: 10.1109/SECON.2007.343000
Jeff Zadeh, Dennis DeVolder
Security is a serious problem in software development, and may become much worse in the future. Unfortunately there is no simple solution to the software security problem. Today's software developers must deal with large numbers of defects in released software. Many security issues result from these defects - defects that occur during software design and development. These defects are unintentional, and their prevalence can be reduced during the development process in order to enhance security. Security must be integrated into the software development life cycle from the beginning and continue until the product is in use. This paper discusses security issues in the design and development of the software.
{"title":"Software development and related security issues","authors":"Jeff Zadeh, Dennis DeVolder","doi":"10.1109/SECON.2007.343000","DOIUrl":"https://doi.org/10.1109/SECON.2007.343000","url":null,"abstract":"Security is a serious problem in software development, and may become much worse in the future. Unfortunately there is no simple solution to the software security problem. Today's software developers must deal with large numbers of defects in released software. Many security issues result from these defects - defects that occur during software design and development. These defects are unintentional, and their prevalence can be reduced during the development process in order to enhance security. Security must be integrated into the software development life cycle from the beginning and continue until the product is in use. This paper discusses security issues in the design and development of the software.","PeriodicalId":423683,"journal":{"name":"Proceedings 2007 IEEE SoutheastCon","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121507170","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 : 2007-03-22DOI: 10.1109/SECON.2007.342867
A. Kamal
The authors previously showed that high QoS and capacity in CBR communications networks can be achieved by the user-group-division method. The novel MAC protocol based on this method and fundamental theories and postulates (supported by the CBR network environment) required to develop the protocol are presented here. No change in hardware or standards is required to implement this protocol and the protocol can be executed on the mobile stations (ms) or cable modems (cm) from the base station (BS) or head-end (HE). Initially, the protocol divides up the network into groups formed by one contention mini-slot (cms) per region and a group of users (with the group size equals the avg. number of users per cms in the network) allocated to that particular cms. Afterwards, the cms bandwidth is re-allocated inter-regionally (regrouped) and the total channel bandwidth is re-distributed between the cms and ds (data slot) based on the feedback received on the collision and available resource (bandwidth) conditions of the network during the previous round-trip time (rtt). The protocol is executed in the network at each rtt by running the feedback mechanism, regrouping, and re-distributing the bandwidth. The advanced network simulator (ANS-1) written in MATLAB using my novel abstractions and the novel Nasrin traffic generation and distribution model are used to evaluate the protocol in a flexible and reliable network simulation environment. The results showed high fair utilization and low waste of the required cms and data bandwidth with high collision reduction. The proposed approach accomplishes a record 80% cms collision reduction and 85% cms and 100% data bandwidth utilization (guaranteeing high QoS and capacity) while providing high controllability to the BS/HE for reducing the probability of collisions. The protocol achieves these improvements by distributing the cms to small groups of users (reducing the probabilities of uncontrollable and high collisions), repeating its execution (thinning the accumulation and repetitions of collisions), and managing the ds and cms resource requirements with feedback to allocate the resources to the needy regions (reducing the probabilities of buildup and recurrences of collisions).
{"title":"A novel 4G MAC protocol guaranteeing high QoS and capacity in CBR communications networks by continuous group divisions and resource re-allocations to considerably reduce contention mini-slot collisions","authors":"A. Kamal","doi":"10.1109/SECON.2007.342867","DOIUrl":"https://doi.org/10.1109/SECON.2007.342867","url":null,"abstract":"The authors previously showed that high QoS and capacity in CBR communications networks can be achieved by the user-group-division method. The novel MAC protocol based on this method and fundamental theories and postulates (supported by the CBR network environment) required to develop the protocol are presented here. No change in hardware or standards is required to implement this protocol and the protocol can be executed on the mobile stations (ms) or cable modems (cm) from the base station (BS) or head-end (HE). Initially, the protocol divides up the network into groups formed by one contention mini-slot (cms) per region and a group of users (with the group size equals the avg. number of users per cms in the network) allocated to that particular cms. Afterwards, the cms bandwidth is re-allocated inter-regionally (regrouped) and the total channel bandwidth is re-distributed between the cms and ds (data slot) based on the feedback received on the collision and available resource (bandwidth) conditions of the network during the previous round-trip time (rtt). The protocol is executed in the network at each rtt by running the feedback mechanism, regrouping, and re-distributing the bandwidth. The advanced network simulator (ANS-1) written in MATLAB using my novel abstractions and the novel Nasrin traffic generation and distribution model are used to evaluate the protocol in a flexible and reliable network simulation environment. The results showed high fair utilization and low waste of the required cms and data bandwidth with high collision reduction. The proposed approach accomplishes a record 80% cms collision reduction and 85% cms and 100% data bandwidth utilization (guaranteeing high QoS and capacity) while providing high controllability to the BS/HE for reducing the probability of collisions. The protocol achieves these improvements by distributing the cms to small groups of users (reducing the probabilities of uncontrollable and high collisions), repeating its execution (thinning the accumulation and repetitions of collisions), and managing the ds and cms resource requirements with feedback to allocate the resources to the needy regions (reducing the probabilities of buildup and recurrences of collisions).","PeriodicalId":423683,"journal":{"name":"Proceedings 2007 IEEE SoutheastCon","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121564195","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 : 2007-03-22DOI: 10.1109/SECON.2007.342920
S.S. Laster, K. Pace
Maintaining a cryptanalysis free environment determines the success of a sensor network. Nevertheless, the ability to maintain a cryptanalysis free environment is the ultimate goal of a wireless sensor network. In the paper, the focus is to show the importance maintaining an efficient cryptographic wireless sensor network versus a cryptanalysis wireless sensor network.
{"title":"Cryptography versus cryptanalysis in wireless sensor networks","authors":"S.S. Laster, K. Pace","doi":"10.1109/SECON.2007.342920","DOIUrl":"https://doi.org/10.1109/SECON.2007.342920","url":null,"abstract":"Maintaining a cryptanalysis free environment determines the success of a sensor network. Nevertheless, the ability to maintain a cryptanalysis free environment is the ultimate goal of a wireless sensor network. In the paper, the focus is to show the importance maintaining an efficient cryptographic wireless sensor network versus a cryptanalysis wireless sensor network.","PeriodicalId":423683,"journal":{"name":"Proceedings 2007 IEEE SoutheastCon","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124374067","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 : 2007-03-22DOI: 10.1109/SECON.2007.342931
T. Burg, R. Groff, K. Burg, M. Hill, T. Boland
Inkjet biofabrication describes the application of "bioink" via an inkjet printing mechanism in order to build two- and three-dimensional tissue constructs for medical treatment. The bioinks may include active compounds such as drugs and living cells as well as non active, scaffolding materials. The technology faces several limitations that present interesting sensing, actuation, and control problems. The nature and scope of these problems is discussed.
{"title":"Systems engineering challenges in inkjet biofabrication","authors":"T. Burg, R. Groff, K. Burg, M. Hill, T. Boland","doi":"10.1109/SECON.2007.342931","DOIUrl":"https://doi.org/10.1109/SECON.2007.342931","url":null,"abstract":"Inkjet biofabrication describes the application of \"bioink\" via an inkjet printing mechanism in order to build two- and three-dimensional tissue constructs for medical treatment. The bioinks may include active compounds such as drugs and living cells as well as non active, scaffolding materials. The technology faces several limitations that present interesting sensing, actuation, and control problems. The nature and scope of these problems is discussed.","PeriodicalId":423683,"journal":{"name":"Proceedings 2007 IEEE SoutheastCon","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130691020","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 : 2007-03-22DOI: 10.1109/SECON.2007.342948
J. Jenkins, H.P. Jenkins, T. Piekarski, M. Waller
High-performance, re-chargeable batteries require carefully controlled charge/discharge cycling for cell formation and for acceptance testing. Standard battery charging circuits and resistive load banks have long been used for this application. This paper describes the use of a dc regenerative motor drive to efficiently provide the charge/discharge capability. An internal transformer reduces the supply line voltage to the maximum battery voltage, and a software interface controls the current and voltage levels. Photographs of the equipment and its voltage and current waveforms, under load, are provided. This equipment has been placed in service to control battery currents up to 400 A and voltages up to 200 V.
{"title":"DC regenerative drive use for battery charge/discharge cycling","authors":"J. Jenkins, H.P. Jenkins, T. Piekarski, M. Waller","doi":"10.1109/SECON.2007.342948","DOIUrl":"https://doi.org/10.1109/SECON.2007.342948","url":null,"abstract":"High-performance, re-chargeable batteries require carefully controlled charge/discharge cycling for cell formation and for acceptance testing. Standard battery charging circuits and resistive load banks have long been used for this application. This paper describes the use of a dc regenerative motor drive to efficiently provide the charge/discharge capability. An internal transformer reduces the supply line voltage to the maximum battery voltage, and a software interface controls the current and voltage levels. Photographs of the equipment and its voltage and current waveforms, under load, are provided. This equipment has been placed in service to control battery currents up to 400 A and voltages up to 200 V.","PeriodicalId":423683,"journal":{"name":"Proceedings 2007 IEEE SoutheastCon","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131050286","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 : 2007-03-22DOI: 10.1109/SECON.2007.342937
L.J. Bunni, K. Altaii
A method is given for the analysis of a multilayer cylindrical induction heating system. The excitation is circumferential and can be three phase or single-phase. The iterative form of solution allows for linear and nonlinear charges. Accuracy of the method is verified with measurements of practical induction heating system together with comparison to numerical and analytical methods.
{"title":"The layer theory approach applied to induction heating systems with rotational symmetry","authors":"L.J. Bunni, K. Altaii","doi":"10.1109/SECON.2007.342937","DOIUrl":"https://doi.org/10.1109/SECON.2007.342937","url":null,"abstract":"A method is given for the analysis of a multilayer cylindrical induction heating system. The excitation is circumferential and can be three phase or single-phase. The iterative form of solution allows for linear and nonlinear charges. Accuracy of the method is verified with measurements of practical induction heating system together with comparison to numerical and analytical methods.","PeriodicalId":423683,"journal":{"name":"Proceedings 2007 IEEE SoutheastCon","volume":"17 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125788330","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 : 2007-03-22DOI: 10.1109/SECON.2007.342946
K. D. Donohue, A. Agrinsoni, J. Hannemann
This work examines time and frequency domain implementations for estimating delays between acoustic signals arriving at spatially distributed microphones. A parametric variant of the phase-only transform (PHAT) is introduced for partially whitening the signal before estimating the delay. The PHAT variant is referred to as the PHAT-beta and is shown to be advantageous when processing signals corrupted by both independent noise and reverberation effects. Simulations show superior performance for the time-domain implementation under conditions of independent noise for time-limited broadband signals, achieving low estimation errors at signal-to-noise ratios 8 to 13 dB lower than that required for a frequency-domain implementation. Extensive Monte Carlo simulations are also performed for the time-domain delay estimator using the PHAT-beta on speech signals corrupted by reverberation and independent noise. Performance metrics include percent anomalous detections as well as the root mean square estimation error. Results show that partial whitening leads to significant improvements over zero or total whitening (as in the case of the standard PHAT). Simulations indicate that robust performance can be achieved for beta values near 0.4 when both reverberations and independent noises are present.
{"title":"Audio signal delay estimation using partial whitening","authors":"K. D. Donohue, A. Agrinsoni, J. Hannemann","doi":"10.1109/SECON.2007.342946","DOIUrl":"https://doi.org/10.1109/SECON.2007.342946","url":null,"abstract":"This work examines time and frequency domain implementations for estimating delays between acoustic signals arriving at spatially distributed microphones. A parametric variant of the phase-only transform (PHAT) is introduced for partially whitening the signal before estimating the delay. The PHAT variant is referred to as the PHAT-beta and is shown to be advantageous when processing signals corrupted by both independent noise and reverberation effects. Simulations show superior performance for the time-domain implementation under conditions of independent noise for time-limited broadband signals, achieving low estimation errors at signal-to-noise ratios 8 to 13 dB lower than that required for a frequency-domain implementation. Extensive Monte Carlo simulations are also performed for the time-domain delay estimator using the PHAT-beta on speech signals corrupted by reverberation and independent noise. Performance metrics include percent anomalous detections as well as the root mean square estimation error. Results show that partial whitening leads to significant improvements over zero or total whitening (as in the case of the standard PHAT). Simulations indicate that robust performance can be achieved for beta values near 0.4 when both reverberations and independent noises are present.","PeriodicalId":423683,"journal":{"name":"Proceedings 2007 IEEE SoutheastCon","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122813161","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 : 2007-03-22DOI: 10.1109/SECON.2007.342972
N. Dhere, Vinay Hadagali, Sachin Kulkarni, S. Pethe, P. Vasekar
Research and development of CuIn1-xGaxSe2-ySy (CIGSeS) thin film solar cells on various types of substrates and techniques is being carried out at the Florida Solar Energy Center (FSEC) Photovoltaics Materials Laboratory (PV Mat Lab) since 1990. Excellent facilities have been developed over the years for the preparation of the copper chalcogenide thin film solar cells. Highly efficient, CIGSeS thin film solar cells are being prepared and analyzed. This paper presents the facilities and research activities that have led to the preparation of highly efficient CIGSeS thin film solar cells.
自1990年以来，佛罗里达太阳能中心(FSEC)光伏材料实验室(PV Mat Lab)一直在研究和开发各种衬底和技术上的CuIn1-xGaxSe2-ySy (CIGSeS)薄膜太阳能电池。近年来，在制备硫系铜薄膜太阳能电池方面已取得了良好的进展。高效的CIGSeS薄膜太阳能电池正在制备和分析中。本文介绍了制备高效CIGSeS薄膜太阳能电池的设备和研究活动。
{"title":"CIGSeS thin film solar cell research and development at the Florida Solar Energy Center","authors":"N. Dhere, Vinay Hadagali, Sachin Kulkarni, S. Pethe, P. Vasekar","doi":"10.1109/SECON.2007.342972","DOIUrl":"https://doi.org/10.1109/SECON.2007.342972","url":null,"abstract":"Research and development of CuIn1-xGaxSe2-ySy (CIGSeS) thin film solar cells on various types of substrates and techniques is being carried out at the Florida Solar Energy Center (FSEC) Photovoltaics Materials Laboratory (PV Mat Lab) since 1990. Excellent facilities have been developed over the years for the preparation of the copper chalcogenide thin film solar cells. Highly efficient, CIGSeS thin film solar cells are being prepared and analyzed. This paper presents the facilities and research activities that have led to the preparation of highly efficient CIGSeS thin film solar cells.","PeriodicalId":423683,"journal":{"name":"Proceedings 2007 IEEE SoutheastCon","volume":"28 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120813215","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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