(FAMU), where he served as Program Area Coordinator and Interim Division Director. With over 23 y... more (FAMU), where he served as Program Area Coordinator and Interim Division Director. With over 23 years of teaching experience in Electrical/Electronic Engineering and Engineering Technology, he currently teaches in the areas of networking, communication systems, biomedical instrumentation, digital signal processing, and analog and digital electronics. He has worked in industry in the areas of telephony, networking, switching and transmission systems, and RF and MMIC circuits and system design. Dr. Asgill also has an MBA in Entrepreneurial Management from Florida State University. He is a member of the IEEE, the ASEE and is a licensed professional engineer (P.E.
Portable Electronic Devices (PEDs) such as laptops, smart phones, tablets etc. have become an int... more Portable Electronic Devices (PEDs) such as laptops, smart phones, tablets etc. have become an integral part of almost every higher education student’s learning toolbox. In this study, the faculty and student perspectives on the effectiveness of the use of PEDs during classes, are collected and compared using surveys done at Southern Polytechnic State University. Faculty openness and reservations, policies, student temptations and complaints are discussed. While the PEDs can be a source of distraction, they, if used carefully, can also provide an opportunity for engaging students.
A major goal of peer observation in the classroom is to provide instructors with formative feedba... more A major goal of peer observation in the classroom is to provide instructors with formative feedback that will improve teaching effectiveness and enhance student learning. Southern Polytechnic State University (SPSU) offers a voluntary “Teaching Partners Program,” in which two faculty members meet, observe a period of each other’s class, reflect, and then discuss strengths and areas where improvements may be warranted. Any faculty member, full-time or part-time, tenured or nontenured, that is teaching at least one section of one course at SPSU is eligible to participate in the program during a given semester. Faculty members are typically paired with someone from outside of their own discipline. This session will present the results of a research study designed to identify which faculty members are most likely to participate in SPSU’s program and to understand the impact of the program. A discussion on faculty members’ perceptions on which aspects of the “Teaching Partners Program” at SPSU are most beneficial will also take place. Results from this study may be used to help participants develop their own peer observation programs or strengthen their existing programs and eventually improve faculty teaching effectiveness and enhance student learning
Eye gaze tracking (EGT) systems have been implemented previously in laboratory environments. Howe... more Eye gaze tracking (EGT) systems have been implemented previously in laboratory environments. However, they present usability obstacles that prevent their broad commercial acceptance. In response, a cursor control system was created that integrates an electromyogram-based control with EGT-based control. This system allows a user to perform small cursor displacements and left click operations by the monitoring and classifying of electromyogram (EMG) signals emitted during facial movements. This functionality will compensate for the limitations in cursor positioning accuracy and in click execution reliability experienced with EGT systems. The EMG/EGT system, an EGT system and a mouse were tested using point-and-click trials. Trial time and error rate results underwent statistical and Fitts’ law analyses. Statistical analysis revealed that the EMG/EGT system was slower than the two other inputs, but was significantly less error-prone than the EGT-only system. Fitts’ law analysis showed ...
(SIUC). He is also an Adjunct Professor in the Department of Electrical & Computer Engineering. C... more (SIUC). He is also an Adjunct Professor in the Department of Electrical & Computer Engineering. Crosby received his B.S. degree in electronics from the University of the West Indies, Mona, Jamaica. He obtained his M.S. and Ph.D, degrees from Florida International University in computer engineering and electrical engineering, respectively. Crosby's overall research purpose is to create secure and trusted solutions for emerging and future networks and systems. These include wireless sensor networks, wireless body area networks, cyberphysical systems, and cloud infrastructures. He also is active in researching strategies in active learning to advance engineering education. He has served as a reviewer for several conferences and journals publications, including IEEE INFOCOM, IEEE Transactions on Systems, Man and Cybernetics: Part C, and Elsevier's Ad Hoc Network Journal. He has also served as a National Science Foundation (NSF) reviewer. He is a Senior Member of IEEE, the National Society of Black Engineers (NSBE), and Eta Kappa Nu.
Her research interests include increasing the participation of minorities, women and other underr... more Her research interests include increasing the participation of minorities, women and other underrepresented groups in engineering. Dr. Worthy focuses much of her research efforts in the area of community engagement and STEM pipeline development. She works to connect P-12 educators and students with STEM professors, students and departments at KSU.
Holding dual music educator certifications (PreK-12) in two states, Dr. Stutzmann is a member of ... more Holding dual music educator certifications (PreK-12) in two states, Dr. Stutzmann is a member of the Research Learning Community (RLC) at her University and is actively involved in presenting and publishing multidisciplinary research studies. In 2012, Dr. Stutzmann received the Georgia Governor's Teaching Fellowship award. In 2012, she also earned a mini-grant to research information on non-traditional students. In 2013, Dr. Stutzmann earned mini-grants to complete research on Flipped Classroom Pedagogy and another grant to research and coauthor a paper regarding student engagement and critical thinking. Dr. Stutzmann has presented locally and nationally at many conferences. She is also the lead adviser for the National Society of Leadership and Success at SPSU. While attending The Boston Conservatory of Music, Beth Stutzmann studied horn with Jonathan Menkis, assistant principal hornist with the Boston Symphony Orchestra. In high school, she studied horn with Robert Ferrante, Brian Morrill, and James Mosher, also a hornist with the Boston Symphony and Boston Pops. In graduate school, Beth studied horn under Martha McQuaid, a former student of Daniel Katzen, second hornist with the Boston Symphony Orchestra. Her conducting studies were with Attilio Poto; Dr. Matthew Mailman; Dr. Scott Nelson. "Taking weekly lessons at Symphony Hall in Boston, where the greatest of musicians throughout time have stood, was awe-inspiring and magical."
He received his MS and PhD in mechanical engineering from Purdue University. He teaches mainly Ma... more He received his MS and PhD in mechanical engineering from Purdue University. He teaches mainly Materials Science, Machine Design, Capstone Design as well as various engineering mechanics courses and labs. He is also interested in the pedagogy of teaching and learning. He is a member of a campus group called Research Learning Community studying various opportunities and methodologies to engage students for improved learning. He is also the faculty advisor for the ASME student chapter.
2013 ASEE Annual Conference & Exposition Proceedings
This paper focuses on a 3000-level course in data communications that is a part of the curriculum... more This paper focuses on a 3000-level course in data communications that is a part of the curriculum in an electrical engineering technology program. Some of the primary learning outcomes of the course section that investigates data packet flow are: to identify the different fields of a data link layer (Ethernet) frame and to describe how the TCP/IP protocol suite utilizes physical, logical and port addresses to send/receive data. In addition, the ability to describe the operation of the Address Resolution Protocol (ARP) in facilitating data link layer communication by using ARP request and ARP reply packets is also a learning outcome. The content relevant to these outcomes is presented in class in a traditional face-to-face lecture format. In these lectures, the data frames are represented in a simplified graphical format. Recently, two laboratories using the Wireshark packet-sniffer application has been added to deepen student understanding of these learning outcomes. The second laboratory of the sequence involves investigating the function of ARP by examining the contents of an ARP request packet and an ARP reply packet produced when a user uses a web browser to access a file from a website. The laboratory also involves analyzing the different fields of an Ethernet frame. It is expected that the interaction with real-world frames resulting from these laboratories should result in an increased ability to accomplish the above-stated learning outcomes. The primary objective of the research was to determine the suitability of Wireshark as a learning tool in the undergraduate data communication classroom. The hypothesis is "empirical investigation with the Wireshark packet sniffer application increases student understanding of communication protocols". This hypothesis is tested through quantitative and qualitative assessment. The quantitative assessment measured the students' knowledge and understanding based on their performance in pre-and post-tests. Qualitative assessment is done by requiring students to complete a survey that focused on their perception and attitude towards their attainment of the learning objectives. The statistical analysis of pre-test versus post-test scores and the survey responses indicate that student participation in the Wireshark laboratories resulted in an improvement in their ability to interpret and analyze real-world data link frames and in an increase in their understanding of how TCP/IP protocols are used for information exchange between two hosts.
Professors need to accommodate administration mandates for designing online courses but what are ... more Professors need to accommodate administration mandates for designing online courses but what are professor attitudes towards online learning and which courses are better adapted to online instruction? Southern Polytechnic State University\u27s Research Learning Community presents conducted research on this platform: A comparison of face-to-face; blended; and fully online models will be examined; as well as professor attitudes towards online learning and which polytechnic courses professors deem truly appropriate for the online environment. Flipped classroom techniques and learning activities used to enhance courses will also be addressed to investigate whether certain flipped classroom techniques are specific to a particular subject area. The SoTL audience will be surveyed as to their opinions of courses better suited for online instruction and which learning activities they incorporate into their own online classes as well as which activities they believe are particular to specific content area
This paper presents a new algorithm to translate electromyogram (EMG) signals, produced during fa... more This paper presents a new algorithm to translate electromyogram (EMG) signals, produced during facial muscle contractions, into computer cursor actions. These cursor actions are: left, right, up, down and left-click. The translation is performed in real-time and the classification of the EMG signals is based on features derived from the spectral analysis of the electromyograms. We have sought to improve upon the original EMG-based cursor control system described in [1] [2], and have devised a new system setup and algorithm for the translation of the EMG signals into cursor actions. The two systems were compared using Matlab simulations and point-and-click trials. The simulation results show a marked improvement of the new system over the previous system in terms of classification accuracy, and the preliminary point-and-click tests indicate the possibility of a faster operation for the new system when compared to the old system.
2015 ASEE Annual Conference and Exposition Proceedings
Southern Polytechnic State University in Marietta, GA. He is a passionate science educator who be... more Southern Polytechnic State University in Marietta, GA. He is a passionate science educator who believes in giving his students a practical, real-world oriented learning experience. Dr. Ferreira's research focuses on adsorption and ion-exchange reactions of cations at the soil mineral/water interface.
Most of the face recognition research performed in the past used 2D intensity images obtained by ... more Most of the face recognition research performed in the past used 2D intensity images obtained by a photographic camera as the data format for processing. But the algorithms developed based on 2D images are not robust to changes of the conditions in which the images are taken, like the illumination of the environment and the orientation of the subject. With the development of 3D imaging techniques, 3D face recognition is becoming a natural choice to overcome the shortcomings of 2D face recognition, since a 3D face image records the exact geometry of the subject, invariant to illumination and the orientation changes. In this paper, a new algorithm for automatic face recognition, based on the characterization of faces by their contours and profiles, is proposed. Experiments show that the central vertical profile and the contour are both very useful features for face recognition. When combined, better recognition rates can be obtained than just using any of them alone. The performance of the algorithm is also compared with that of the traditional principal component analysis method using a database of 80 subjects. Results show that our method, which characterizes a face through its central vertical profile and contour, can achieve better results and requires less computational power in processing this test database.
At present, a three-input electromyography (EMG) system has been created to provide real-time, ha... more At present, a three-input electromyography (EMG) system has been created to provide real-time, hands-free cursor control. The system uses the real-time spectral analysis of three EMG signals to produce the following five cursor actions: i) LEFT, ii) RIGHT, iii) UP, iv) DOWN, v) LEFT-CLICK. The three EMG signals are obtained from two surface electrodes placed on the left and right
It has been suggested that effectively detecting the stress level of a computer user could possib... more It has been suggested that effectively detecting the stress level of a computer user could possibly develop the computers' ability to respond intelligently and help the user relax from negative emotional states during human-computer interaction. Our research focuses on the use of three physiological signals: blood volume pulse (BVP), galvanic skin response (GSR) and pupil diameter (PD), to automatically monitor
International Journal of Ad hoc, Sensor & Ubiquitous Computing, 2012
Wireless body area networks (WBANs) are emerging as important networks, applicable in various fie... more Wireless body area networks (WBANs) are emerging as important networks, applicable in various fields. This paper surveys the WBANs that are designed for applications in healthcare. We present a comprehensive survey consisting of stand-alone sections focusing on important aspects of WBANs. We examine the following: monitoring and sensing, power efficient protocols, system architectures, routing and security. We conclude by discussing some open research issues, their potential solutions and future trends.
With the spread of the Internet into mainstream society, there has come a demand for the efficien... more With the spread of the Internet into mainstream society, there has come a demand for the efficient transmission of multimedia information. Accompanying the drive to find more efficient ways of utilizing limited transmission bandwidth is a need to find novel ways of compressing data. This thesis proposed the utilization of transform coding compression techniques for the transmission of audio data across networks. The Discrete Cosine Transform (DCT) and the Discrete Sine Transform (DST) were the primary transforms utilized. This thesis investigated the viability of utilizing individual transforms, as well as, nested modifications of these transforms for compression purposes. These techniques were compared to those already in existence. Viability was determined using objective compression measures. It was found that transform coding techniques gave a useful alternative to the techniques in existence. A voice-over-IP (VOIP) application that utilized one of the transform coding techniques was implemented. v
Proceedings of the 9th international ACM SIGACCESS conference on Computers and accessibility, 2007
Eye Gaze Tracking (EGT) systems allow individuals with motor disabilities to quickly move a scree... more Eye Gaze Tracking (EGT) systems allow individuals with motor disabilities to quickly move a screen cursor on a PC. However, there are limitations in the steadiness and the accuracy of cursor control and clicking capabilities they provide. On the other hand, a cursor control system to step the cursor up, down, left or right in response to voluntary contractions of specific facial muscles, developed by our group, provides steady and precise, albeit slow, cursor control, along with a reliable clicking mechanism. This system identifies muscle contractions by performing digital processing of the Electromyogram (EMG) signals generated by the facial muscles. Based on the complementary nature of the strengths of these two cursor control modalities we have developed an integrated EGT/EMG system in an attempt to consolidate the advantages of both input modalities. We have compared the selection accuracy and speed of an EGT-only cursor control implementation, our integrated EGT/EMG cursor control system and a standard handheld mouse in point-and click trials.
(FAMU), where he served as Program Area Coordinator and Interim Division Director. With over 23 y... more (FAMU), where he served as Program Area Coordinator and Interim Division Director. With over 23 years of teaching experience in Electrical/Electronic Engineering and Engineering Technology, he currently teaches in the areas of networking, communication systems, biomedical instrumentation, digital signal processing, and analog and digital electronics. He has worked in industry in the areas of telephony, networking, switching and transmission systems, and RF and MMIC circuits and system design. Dr. Asgill also has an MBA in Entrepreneurial Management from Florida State University. He is a member of the IEEE, the ASEE and is a licensed professional engineer (P.E.
Portable Electronic Devices (PEDs) such as laptops, smart phones, tablets etc. have become an int... more Portable Electronic Devices (PEDs) such as laptops, smart phones, tablets etc. have become an integral part of almost every higher education student’s learning toolbox. In this study, the faculty and student perspectives on the effectiveness of the use of PEDs during classes, are collected and compared using surveys done at Southern Polytechnic State University. Faculty openness and reservations, policies, student temptations and complaints are discussed. While the PEDs can be a source of distraction, they, if used carefully, can also provide an opportunity for engaging students.
A major goal of peer observation in the classroom is to provide instructors with formative feedba... more A major goal of peer observation in the classroom is to provide instructors with formative feedback that will improve teaching effectiveness and enhance student learning. Southern Polytechnic State University (SPSU) offers a voluntary “Teaching Partners Program,” in which two faculty members meet, observe a period of each other’s class, reflect, and then discuss strengths and areas where improvements may be warranted. Any faculty member, full-time or part-time, tenured or nontenured, that is teaching at least one section of one course at SPSU is eligible to participate in the program during a given semester. Faculty members are typically paired with someone from outside of their own discipline. This session will present the results of a research study designed to identify which faculty members are most likely to participate in SPSU’s program and to understand the impact of the program. A discussion on faculty members’ perceptions on which aspects of the “Teaching Partners Program” at SPSU are most beneficial will also take place. Results from this study may be used to help participants develop their own peer observation programs or strengthen their existing programs and eventually improve faculty teaching effectiveness and enhance student learning
Eye gaze tracking (EGT) systems have been implemented previously in laboratory environments. Howe... more Eye gaze tracking (EGT) systems have been implemented previously in laboratory environments. However, they present usability obstacles that prevent their broad commercial acceptance. In response, a cursor control system was created that integrates an electromyogram-based control with EGT-based control. This system allows a user to perform small cursor displacements and left click operations by the monitoring and classifying of electromyogram (EMG) signals emitted during facial movements. This functionality will compensate for the limitations in cursor positioning accuracy and in click execution reliability experienced with EGT systems. The EMG/EGT system, an EGT system and a mouse were tested using point-and-click trials. Trial time and error rate results underwent statistical and Fitts’ law analyses. Statistical analysis revealed that the EMG/EGT system was slower than the two other inputs, but was significantly less error-prone than the EGT-only system. Fitts’ law analysis showed ...
(SIUC). He is also an Adjunct Professor in the Department of Electrical & Computer Engineering. C... more (SIUC). He is also an Adjunct Professor in the Department of Electrical & Computer Engineering. Crosby received his B.S. degree in electronics from the University of the West Indies, Mona, Jamaica. He obtained his M.S. and Ph.D, degrees from Florida International University in computer engineering and electrical engineering, respectively. Crosby's overall research purpose is to create secure and trusted solutions for emerging and future networks and systems. These include wireless sensor networks, wireless body area networks, cyberphysical systems, and cloud infrastructures. He also is active in researching strategies in active learning to advance engineering education. He has served as a reviewer for several conferences and journals publications, including IEEE INFOCOM, IEEE Transactions on Systems, Man and Cybernetics: Part C, and Elsevier's Ad Hoc Network Journal. He has also served as a National Science Foundation (NSF) reviewer. He is a Senior Member of IEEE, the National Society of Black Engineers (NSBE), and Eta Kappa Nu.
Her research interests include increasing the participation of minorities, women and other underr... more Her research interests include increasing the participation of minorities, women and other underrepresented groups in engineering. Dr. Worthy focuses much of her research efforts in the area of community engagement and STEM pipeline development. She works to connect P-12 educators and students with STEM professors, students and departments at KSU.
Holding dual music educator certifications (PreK-12) in two states, Dr. Stutzmann is a member of ... more Holding dual music educator certifications (PreK-12) in two states, Dr. Stutzmann is a member of the Research Learning Community (RLC) at her University and is actively involved in presenting and publishing multidisciplinary research studies. In 2012, Dr. Stutzmann received the Georgia Governor's Teaching Fellowship award. In 2012, she also earned a mini-grant to research information on non-traditional students. In 2013, Dr. Stutzmann earned mini-grants to complete research on Flipped Classroom Pedagogy and another grant to research and coauthor a paper regarding student engagement and critical thinking. Dr. Stutzmann has presented locally and nationally at many conferences. She is also the lead adviser for the National Society of Leadership and Success at SPSU. While attending The Boston Conservatory of Music, Beth Stutzmann studied horn with Jonathan Menkis, assistant principal hornist with the Boston Symphony Orchestra. In high school, she studied horn with Robert Ferrante, Brian Morrill, and James Mosher, also a hornist with the Boston Symphony and Boston Pops. In graduate school, Beth studied horn under Martha McQuaid, a former student of Daniel Katzen, second hornist with the Boston Symphony Orchestra. Her conducting studies were with Attilio Poto; Dr. Matthew Mailman; Dr. Scott Nelson. "Taking weekly lessons at Symphony Hall in Boston, where the greatest of musicians throughout time have stood, was awe-inspiring and magical."
He received his MS and PhD in mechanical engineering from Purdue University. He teaches mainly Ma... more He received his MS and PhD in mechanical engineering from Purdue University. He teaches mainly Materials Science, Machine Design, Capstone Design as well as various engineering mechanics courses and labs. He is also interested in the pedagogy of teaching and learning. He is a member of a campus group called Research Learning Community studying various opportunities and methodologies to engage students for improved learning. He is also the faculty advisor for the ASME student chapter.
2013 ASEE Annual Conference & Exposition Proceedings
This paper focuses on a 3000-level course in data communications that is a part of the curriculum... more This paper focuses on a 3000-level course in data communications that is a part of the curriculum in an electrical engineering technology program. Some of the primary learning outcomes of the course section that investigates data packet flow are: to identify the different fields of a data link layer (Ethernet) frame and to describe how the TCP/IP protocol suite utilizes physical, logical and port addresses to send/receive data. In addition, the ability to describe the operation of the Address Resolution Protocol (ARP) in facilitating data link layer communication by using ARP request and ARP reply packets is also a learning outcome. The content relevant to these outcomes is presented in class in a traditional face-to-face lecture format. In these lectures, the data frames are represented in a simplified graphical format. Recently, two laboratories using the Wireshark packet-sniffer application has been added to deepen student understanding of these learning outcomes. The second laboratory of the sequence involves investigating the function of ARP by examining the contents of an ARP request packet and an ARP reply packet produced when a user uses a web browser to access a file from a website. The laboratory also involves analyzing the different fields of an Ethernet frame. It is expected that the interaction with real-world frames resulting from these laboratories should result in an increased ability to accomplish the above-stated learning outcomes. The primary objective of the research was to determine the suitability of Wireshark as a learning tool in the undergraduate data communication classroom. The hypothesis is "empirical investigation with the Wireshark packet sniffer application increases student understanding of communication protocols". This hypothesis is tested through quantitative and qualitative assessment. The quantitative assessment measured the students' knowledge and understanding based on their performance in pre-and post-tests. Qualitative assessment is done by requiring students to complete a survey that focused on their perception and attitude towards their attainment of the learning objectives. The statistical analysis of pre-test versus post-test scores and the survey responses indicate that student participation in the Wireshark laboratories resulted in an improvement in their ability to interpret and analyze real-world data link frames and in an increase in their understanding of how TCP/IP protocols are used for information exchange between two hosts.
Professors need to accommodate administration mandates for designing online courses but what are ... more Professors need to accommodate administration mandates for designing online courses but what are professor attitudes towards online learning and which courses are better adapted to online instruction? Southern Polytechnic State University\u27s Research Learning Community presents conducted research on this platform: A comparison of face-to-face; blended; and fully online models will be examined; as well as professor attitudes towards online learning and which polytechnic courses professors deem truly appropriate for the online environment. Flipped classroom techniques and learning activities used to enhance courses will also be addressed to investigate whether certain flipped classroom techniques are specific to a particular subject area. The SoTL audience will be surveyed as to their opinions of courses better suited for online instruction and which learning activities they incorporate into their own online classes as well as which activities they believe are particular to specific content area
This paper presents a new algorithm to translate electromyogram (EMG) signals, produced during fa... more This paper presents a new algorithm to translate electromyogram (EMG) signals, produced during facial muscle contractions, into computer cursor actions. These cursor actions are: left, right, up, down and left-click. The translation is performed in real-time and the classification of the EMG signals is based on features derived from the spectral analysis of the electromyograms. We have sought to improve upon the original EMG-based cursor control system described in [1] [2], and have devised a new system setup and algorithm for the translation of the EMG signals into cursor actions. The two systems were compared using Matlab simulations and point-and-click trials. The simulation results show a marked improvement of the new system over the previous system in terms of classification accuracy, and the preliminary point-and-click tests indicate the possibility of a faster operation for the new system when compared to the old system.
2015 ASEE Annual Conference and Exposition Proceedings
Southern Polytechnic State University in Marietta, GA. He is a passionate science educator who be... more Southern Polytechnic State University in Marietta, GA. He is a passionate science educator who believes in giving his students a practical, real-world oriented learning experience. Dr. Ferreira's research focuses on adsorption and ion-exchange reactions of cations at the soil mineral/water interface.
Most of the face recognition research performed in the past used 2D intensity images obtained by ... more Most of the face recognition research performed in the past used 2D intensity images obtained by a photographic camera as the data format for processing. But the algorithms developed based on 2D images are not robust to changes of the conditions in which the images are taken, like the illumination of the environment and the orientation of the subject. With the development of 3D imaging techniques, 3D face recognition is becoming a natural choice to overcome the shortcomings of 2D face recognition, since a 3D face image records the exact geometry of the subject, invariant to illumination and the orientation changes. In this paper, a new algorithm for automatic face recognition, based on the characterization of faces by their contours and profiles, is proposed. Experiments show that the central vertical profile and the contour are both very useful features for face recognition. When combined, better recognition rates can be obtained than just using any of them alone. The performance of the algorithm is also compared with that of the traditional principal component analysis method using a database of 80 subjects. Results show that our method, which characterizes a face through its central vertical profile and contour, can achieve better results and requires less computational power in processing this test database.
At present, a three-input electromyography (EMG) system has been created to provide real-time, ha... more At present, a three-input electromyography (EMG) system has been created to provide real-time, hands-free cursor control. The system uses the real-time spectral analysis of three EMG signals to produce the following five cursor actions: i) LEFT, ii) RIGHT, iii) UP, iv) DOWN, v) LEFT-CLICK. The three EMG signals are obtained from two surface electrodes placed on the left and right
It has been suggested that effectively detecting the stress level of a computer user could possib... more It has been suggested that effectively detecting the stress level of a computer user could possibly develop the computers' ability to respond intelligently and help the user relax from negative emotional states during human-computer interaction. Our research focuses on the use of three physiological signals: blood volume pulse (BVP), galvanic skin response (GSR) and pupil diameter (PD), to automatically monitor
International Journal of Ad hoc, Sensor & Ubiquitous Computing, 2012
Wireless body area networks (WBANs) are emerging as important networks, applicable in various fie... more Wireless body area networks (WBANs) are emerging as important networks, applicable in various fields. This paper surveys the WBANs that are designed for applications in healthcare. We present a comprehensive survey consisting of stand-alone sections focusing on important aspects of WBANs. We examine the following: monitoring and sensing, power efficient protocols, system architectures, routing and security. We conclude by discussing some open research issues, their potential solutions and future trends.
With the spread of the Internet into mainstream society, there has come a demand for the efficien... more With the spread of the Internet into mainstream society, there has come a demand for the efficient transmission of multimedia information. Accompanying the drive to find more efficient ways of utilizing limited transmission bandwidth is a need to find novel ways of compressing data. This thesis proposed the utilization of transform coding compression techniques for the transmission of audio data across networks. The Discrete Cosine Transform (DCT) and the Discrete Sine Transform (DST) were the primary transforms utilized. This thesis investigated the viability of utilizing individual transforms, as well as, nested modifications of these transforms for compression purposes. These techniques were compared to those already in existence. Viability was determined using objective compression measures. It was found that transform coding techniques gave a useful alternative to the techniques in existence. A voice-over-IP (VOIP) application that utilized one of the transform coding techniques was implemented. v
Proceedings of the 9th international ACM SIGACCESS conference on Computers and accessibility, 2007
Eye Gaze Tracking (EGT) systems allow individuals with motor disabilities to quickly move a scree... more Eye Gaze Tracking (EGT) systems allow individuals with motor disabilities to quickly move a screen cursor on a PC. However, there are limitations in the steadiness and the accuracy of cursor control and clicking capabilities they provide. On the other hand, a cursor control system to step the cursor up, down, left or right in response to voluntary contractions of specific facial muscles, developed by our group, provides steady and precise, albeit slow, cursor control, along with a reliable clicking mechanism. This system identifies muscle contractions by performing digital processing of the Electromyogram (EMG) signals generated by the facial muscles. Based on the complementary nature of the strengths of these two cursor control modalities we have developed an integrated EGT/EMG system in an attempt to consolidate the advantages of both input modalities. We have compared the selection accuracy and speed of an EGT-only cursor control implementation, our integrated EGT/EMG cursor control system and a standard handheld mouse in point-and click trials.
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Papers by Craig Chin