Wiliam Kaiser - Academia.edu (original) (raw)
Papers by Wiliam Kaiser
Proceedings. 10th IEEE International Workshop on Future Trends of Distributed Computing Systems, 2004. FTDCS 2004.
2004 First Annual IEEE Communications Society Conference on Sensor and Ad Hoc Communications and Networks, 2004. IEEE SECON 2004.
Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference, 2011
Advancement in wireless health sensor systems has triggered rapidly expanding research in continu... more Advancement in wireless health sensor systems has triggered rapidly expanding research in continuous activity monitoring for chronic disease management or promotion and assessment of physical rehabilitation. Wireless motion sensing is increasingly important in treatments where remote collection of sensor measurements can provide an in-field objective evaluation of physical activity patterns. The well-known challenge of limited operating lifetime of energy-constrained wireless health sensor systems continues to present a primary limitation for these applications. This paper introduces CARER, a software system that supports a novel algorithm that exploits knowledge of context and dynamically schedules sensor measurement episodes within an energy consumption budget while ensuring classification accuracy. The sensor selection algorithm in the CARER system is based on Partially Observable Markov Decision Process (POMDP). The parameters for the POMDP algorithm can be obtained through stan...
Technical Digest. IEEE International MEMS 99 Conference. Twelfth IEEE International Conference on Micro Electro Mechanical Systems (Cat. No.99CH36291), 1999
Rapidly emerging wireless distributed sensing applications such as seismic monitoring, civil stru... more Rapidly emerging wireless distributed sensing applications such as seismic monitoring, civil structural safety, security, and military threat identification require small, inexpensive acceleration sensors with sensitivities limited by the background noise of the earth. As will be shown, this goal may only be attained through a low resonant frequency device with a presettable spring. This paper will discuss design techniques in the quest for this goal and a novel, mechanically micro-adjustable Z-axis deep reactive ion etched (DRIE) accelerometer sensor with a resonant frequency below 100 Hz. This accelerometer design will be capable of sub-micro-g sensitivities and has a simple, low cost fabrication process
Unattended/Unmanned Ground, Ocean, and Air Sensor Technologies and Applications VI, 2004
A low-power hardware platform and a software framework to support distributed wireless sensing fo... more A low-power hardware platform and a software framework to support distributed wireless sensing for unattended ground sensor (UGS) applications has been developed. This platform provides a comprehensive set of hardware capabilities needed to meet the sensing, processing, and communication requirements for UGS, including a 16-channel analog interface, a processor dedicated to managing real-time requirements, dual wireless interfaces, and a low-power system bus to enable system modularity. An open software framework based on the Linux kernel is hosted on the main system processor. This framework incorporates the tools for effectively utilizing the capabilities of the hardware platform and rapidly developing applications in a networked, embedded environment.
Wireless Health 2010, 2010
Patients' skin integrity has long been an issue of concern in nursing homes and ... more Patients' skin integrity has long been an issue of concern in nursing homes and hospitals. Overall incidence of pressure ulcers for hospitalized patients is as high as 50%. The estimated cost of treating pressure ulcers ranges from 5,000to5,000 to 5,000to40,000 for each ulcer, depending on severity. A smart compact capacitive sensing wireless handheld system is presented which measures Sub-Epidermal Moisture (SEM) as a mean to detect and monitor early symptoms of ulcer development. The system was successfully verified in trials with 30 volunteers and is currently deployed for clinical trials in four nursing homes.
Proceedings 2007 IEEE International Conference on Robotics and Automation, 2007
Lecture Notes in Computer Science, 2005
To explore mobility in wireless sensor networks, we created Ragobot, a small-sized robot platform... more To explore mobility in wireless sensor networks, we created Ragobot, a small-sized robot platform that provides a large number of features, some not sup-ported even by larger-size robots. At only 13.3 cm long by 6cm wide, Ragobot is positioned at the intersection of size and ...
Proceedings of the 1st international workshop on Wireless network testbeds, experimental evaluation & characterization, 2006
2010 IEEE International Conference on Robotics and Automation, 2010
Proceedings of the 3rd international symposium on Information processing in sensor networks, 2004
Proceedings of the 2nd Conference on Wireless Health, 2011
Pressure Ulcer (PU) incidence leads to considerable risk, in particular for the frail elderly, an... more Pressure Ulcer (PU) incidence leads to considerable risk, in particular for the frail elderly, and a large national healthcare treatment cost. Evidence-based methods for assuring the health and safety of patients are urgently needed. Recent clinical trials have demonstrated that sub-epidermal moisture (SEM) present in tissue may be measured by interrogation of tissue dielectric properties and are associated with the
Wireless Health 2010, 2010
Physical rehabilitation has become increasingly important for subjects recovering from treatment ... more Physical rehabilitation has become increasingly important for subjects recovering from treatment in clinics and from disease conditions including stroke [6]. A particularly critical requirement is the support of individuals who suffer from impaired mobility or may be confined to beds, yet must be provided with an assured fitness promotion regimen. We will demonstrate a portable cycle restorator that continuously measures
SPIE Proceedings, 1996
This paper reports on the design, modeling, fabrication, and characterization of a novel silicon ... more This paper reports on the design, modeling, fabrication, and characterization of a novel silicon bulk micromachined vibratory rate gyroscope and a 3-axes rotation sensing system using this new type of.
Proceedings of the 2nd Conference on Wireless Health, 2011
2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2007
Nature Medicine, 2002
We have developed a non-radioactive flow-cytometry assay to monitor and quantify the target-cell ... more We have developed a non-radioactive flow-cytometry assay to monitor and quantify the target-cell killing activities mediated by cytotoxic T lymphocytes (CTLs). This flow-cytometry CTL (FCC) assay is predicated on measurement of CTL-induced caspase activation in target cells through detection of the specific cleavage of fluorogenic caspase substrates. Here we show that this assay reliably detects antigen-specific CTL killing of target cells, and demonstrate that it provides a more sensitive, more informative and safer alternative to the standard 51Cr-release assay most often used to quantify CTL responses. The FCC assay can be used to study CTL-mediated killing of primary host target cells of different cell lineages, and enables the study of antigen-specific cellular immune responses in real time at the single-cell level. As such, the FCC assay can provide a valuable tool for studies of infectious disease pathogenesis and development of new vaccines and immunotherapies.
Limnology and Oceanography, 2008
Journal of Field Robotics, 2007
Large‐scale environmental sensing, e.g., understanding microbial processes in an aquatic ecosyste... more Large‐scale environmental sensing, e.g., understanding microbial processes in an aquatic ecosystem, requires coordination across a multidisciplinary team of experts working closely with a robotic sensing and sampling system. We describe a human‐robot team that conducted an aquatic sampling campaign in Lake Fulmor, San Jacinto Mountains Reserve, California during three consecutive site visits (May 9–11, June 19–22, and August 28–31, 2006). The goal of the campaign was to study the behavior of phytoplankton in the lake and their relationship to the underlying physical, chemical, and biological parameters. Phytoplankton form the largest source of oxygen and the foundation of the food web in most aquatic ecosystems. The reported campaign consisted of three system deployments spanning four months. The robotic system consisted of two subsystems—NAMOS (networked aquatic microbial observing systems) comprised of a robotic boat and static buoys, and NIMS‐RD (rapidly deployable networked info...
IEEE Transactions on Robotics, 2009
Proceedings. 10th IEEE International Workshop on Future Trends of Distributed Computing Systems, 2004. FTDCS 2004.
2004 First Annual IEEE Communications Society Conference on Sensor and Ad Hoc Communications and Networks, 2004. IEEE SECON 2004.
Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference, 2011
Advancement in wireless health sensor systems has triggered rapidly expanding research in continu... more Advancement in wireless health sensor systems has triggered rapidly expanding research in continuous activity monitoring for chronic disease management or promotion and assessment of physical rehabilitation. Wireless motion sensing is increasingly important in treatments where remote collection of sensor measurements can provide an in-field objective evaluation of physical activity patterns. The well-known challenge of limited operating lifetime of energy-constrained wireless health sensor systems continues to present a primary limitation for these applications. This paper introduces CARER, a software system that supports a novel algorithm that exploits knowledge of context and dynamically schedules sensor measurement episodes within an energy consumption budget while ensuring classification accuracy. The sensor selection algorithm in the CARER system is based on Partially Observable Markov Decision Process (POMDP). The parameters for the POMDP algorithm can be obtained through stan...
Technical Digest. IEEE International MEMS 99 Conference. Twelfth IEEE International Conference on Micro Electro Mechanical Systems (Cat. No.99CH36291), 1999
Rapidly emerging wireless distributed sensing applications such as seismic monitoring, civil stru... more Rapidly emerging wireless distributed sensing applications such as seismic monitoring, civil structural safety, security, and military threat identification require small, inexpensive acceleration sensors with sensitivities limited by the background noise of the earth. As will be shown, this goal may only be attained through a low resonant frequency device with a presettable spring. This paper will discuss design techniques in the quest for this goal and a novel, mechanically micro-adjustable Z-axis deep reactive ion etched (DRIE) accelerometer sensor with a resonant frequency below 100 Hz. This accelerometer design will be capable of sub-micro-g sensitivities and has a simple, low cost fabrication process
Unattended/Unmanned Ground, Ocean, and Air Sensor Technologies and Applications VI, 2004
A low-power hardware platform and a software framework to support distributed wireless sensing fo... more A low-power hardware platform and a software framework to support distributed wireless sensing for unattended ground sensor (UGS) applications has been developed. This platform provides a comprehensive set of hardware capabilities needed to meet the sensing, processing, and communication requirements for UGS, including a 16-channel analog interface, a processor dedicated to managing real-time requirements, dual wireless interfaces, and a low-power system bus to enable system modularity. An open software framework based on the Linux kernel is hosted on the main system processor. This framework incorporates the tools for effectively utilizing the capabilities of the hardware platform and rapidly developing applications in a networked, embedded environment.
Wireless Health 2010, 2010
Patients' skin integrity has long been an issue of concern in nursing homes and ... more Patients' skin integrity has long been an issue of concern in nursing homes and hospitals. Overall incidence of pressure ulcers for hospitalized patients is as high as 50%. The estimated cost of treating pressure ulcers ranges from 5,000to5,000 to 5,000to40,000 for each ulcer, depending on severity. A smart compact capacitive sensing wireless handheld system is presented which measures Sub-Epidermal Moisture (SEM) as a mean to detect and monitor early symptoms of ulcer development. The system was successfully verified in trials with 30 volunteers and is currently deployed for clinical trials in four nursing homes.
Proceedings 2007 IEEE International Conference on Robotics and Automation, 2007
Lecture Notes in Computer Science, 2005
To explore mobility in wireless sensor networks, we created Ragobot, a small-sized robot platform... more To explore mobility in wireless sensor networks, we created Ragobot, a small-sized robot platform that provides a large number of features, some not sup-ported even by larger-size robots. At only 13.3 cm long by 6cm wide, Ragobot is positioned at the intersection of size and ...
Proceedings of the 1st international workshop on Wireless network testbeds, experimental evaluation & characterization, 2006
2010 IEEE International Conference on Robotics and Automation, 2010
Proceedings of the 3rd international symposium on Information processing in sensor networks, 2004
Proceedings of the 2nd Conference on Wireless Health, 2011
Pressure Ulcer (PU) incidence leads to considerable risk, in particular for the frail elderly, an... more Pressure Ulcer (PU) incidence leads to considerable risk, in particular for the frail elderly, and a large national healthcare treatment cost. Evidence-based methods for assuring the health and safety of patients are urgently needed. Recent clinical trials have demonstrated that sub-epidermal moisture (SEM) present in tissue may be measured by interrogation of tissue dielectric properties and are associated with the
Wireless Health 2010, 2010
Physical rehabilitation has become increasingly important for subjects recovering from treatment ... more Physical rehabilitation has become increasingly important for subjects recovering from treatment in clinics and from disease conditions including stroke [6]. A particularly critical requirement is the support of individuals who suffer from impaired mobility or may be confined to beds, yet must be provided with an assured fitness promotion regimen. We will demonstrate a portable cycle restorator that continuously measures
SPIE Proceedings, 1996
This paper reports on the design, modeling, fabrication, and characterization of a novel silicon ... more This paper reports on the design, modeling, fabrication, and characterization of a novel silicon bulk micromachined vibratory rate gyroscope and a 3-axes rotation sensing system using this new type of.
Proceedings of the 2nd Conference on Wireless Health, 2011
2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2007
Nature Medicine, 2002
We have developed a non-radioactive flow-cytometry assay to monitor and quantify the target-cell ... more We have developed a non-radioactive flow-cytometry assay to monitor and quantify the target-cell killing activities mediated by cytotoxic T lymphocytes (CTLs). This flow-cytometry CTL (FCC) assay is predicated on measurement of CTL-induced caspase activation in target cells through detection of the specific cleavage of fluorogenic caspase substrates. Here we show that this assay reliably detects antigen-specific CTL killing of target cells, and demonstrate that it provides a more sensitive, more informative and safer alternative to the standard 51Cr-release assay most often used to quantify CTL responses. The FCC assay can be used to study CTL-mediated killing of primary host target cells of different cell lineages, and enables the study of antigen-specific cellular immune responses in real time at the single-cell level. As such, the FCC assay can provide a valuable tool for studies of infectious disease pathogenesis and development of new vaccines and immunotherapies.
Limnology and Oceanography, 2008
Journal of Field Robotics, 2007
Large‐scale environmental sensing, e.g., understanding microbial processes in an aquatic ecosyste... more Large‐scale environmental sensing, e.g., understanding microbial processes in an aquatic ecosystem, requires coordination across a multidisciplinary team of experts working closely with a robotic sensing and sampling system. We describe a human‐robot team that conducted an aquatic sampling campaign in Lake Fulmor, San Jacinto Mountains Reserve, California during three consecutive site visits (May 9–11, June 19–22, and August 28–31, 2006). The goal of the campaign was to study the behavior of phytoplankton in the lake and their relationship to the underlying physical, chemical, and biological parameters. Phytoplankton form the largest source of oxygen and the foundation of the food web in most aquatic ecosystems. The reported campaign consisted of three system deployments spanning four months. The robotic system consisted of two subsystems—NAMOS (networked aquatic microbial observing systems) comprised of a robotic boat and static buoys, and NIMS‐RD (rapidly deployable networked info...
IEEE Transactions on Robotics, 2009