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International Conference on Sensing Technology

November 21-23, 2005
Palmerston North, New Zealand

 

Confirmed Keynote Speakers to date Mel Siegel, Shoogo Ueno

 

Scaling issues in large networks of small sensors:energy and communication management

Mel Siegel, Ph.D.
Associate Research Professor
Director, Sensor, Measurement, and Control Lab
The Robotics Institute – School of Computer Science
Carnegie Mellon University
Pittsburgh PA 15213 USA
E-Mail: mws@cmu.edu
Webpage: http://www.cs.cmu.edu/~mws

INTERESTS and ACTIVITIES

  • Sensing, sensors and instruments, measurement science, system modelling
  • AI methods for data fusion, analysis, presentation, and system control
  • Sensor fusion for context aware computing / human computer interaction
  • 3D-stereoscopic display system concepts, optics, coding, and psychophysics
  • Robots and sensors for remote explosives and drug detection, and aircraft inspection
  • High-fidelity tele-operation for remote and space–based science
  • Innovative sensors and sensor fusion methods for future vehicles and driver safety
  • Large networks of small sensors, e.g., to initialise global-scale weather models
  • Teaching outreach and program innovation; Technology Peace Corps

RESEARCH MILESTONES

  • Negative ion structures (laser photo detachment photoelectron spectrometry)
  • Ion-atom/molecule collisions (double differential cross-section measurements)
  • Atomic hyperfine structure (magnetic resonance in hex pole-focused beams)
  • Space, analytical, process, and isotopic mass spectrometry (high pressure ionizers)
  • Biotechnology process control (rule-based characterization and decision)
  • Piezoelectric and optical tactile sensors (identification and manipulation by robots)
  • Solid state gas sensor characterization and mixture analysis (neural networks)
  • Analytical and numerical modelling of optical devices and instruments (photons, ions)
  • Mobile robots for remote and automated skin inspection of aging aircraft
  • Zoneless 3D-autostereoscopic display system

PROFESSIONAL SERVICE

IEEE: Instrumentation and Measurement Society Administrative Committee and Treasurer, IMTC Program Committee, VIMS Program Committee and General Chair, Transactions on Instrumentation and Measurement Associate Editor, chair of Technical Committees in Instrumentation and Measurements Society and Robotics and Automation Society, Senior Member Advancement Panel.

AWARDS

Fellow of the IEEE, cited for contributions to the field of sensors, measurement and robotics.

IR-100 awards for “100 most significant inventions of the year” for inventions in mass spectrometry (2 awards), particle detection, and semiconductor-based gas sensors.

Best paper of the year award, Robotic Assistants for Aircraft Inspectors, Industrial

Robot (MCB University Press).

 

NEW HORIZON IN BIOIMAGING AND BIOMAGNETICS

Dr Shoogo Ueno Pd.D.
Professor and Chairman
Department of Biomedical Engineering,
Graduate School of Medicine,
The University of Tokyo,
7-3-1 Hongo, Bunkyo-ku
Tokyo 113-0033
Japan
E-mail: ueno@medes.m.u-tokyo.ac.jp

Recent advances in bioimaging and biomagnetics for medical applications are reviewed and discussed based on the results obtained mainly in our laboratory. The review includes transcranial magnetic stimulation (TMS), magnetoencephalograpy (MEG), electrical magnetic resonance imaging (MRI), and magnetic control of cell orientation and cell growth.

Transcranial magnetic stimulation (TMS) is a useful technique to stimulate human brain noninvasively. Our devised method of localized brain stimulation uses a figure-eight coil. When a strong electric current is applied to a figure-eight coil over the head for 0.1ms, a pulsed magnetic field of 1-2T is produced. This pulsed magnetic field induces eddy currents in the brain, which stimulate the nervous system. We have succeeded in selectively stimulating the human cortex with a spatial resolution of 3-5 mm. TMS is a useful method to examine brain function and structure without causing any pain. TMS has many potential medical applications. These are high expectation for magnetic stimulation to regulate paralysed muscles, promote regeneration of a damaged nervous system, regulate gene expression, and compensate for the loss of sensory functions. Results obtained in recent studies concerning TMS have provided a basic understanding of its clinical application in the treatment of depression and Parkinson’s disease, as well as clinical usefulness in protecting or repairing neurons damaged by cerebral infarction or other brain injury.

Magnetoencephalograpy (MEG) is a technique to measure the very weak magnetic fields generated by neuronal currents. These biomagnetic fields are measured by a superconducting quantum interference device (SQUID), which detects changes in a magnetic field as weak as 5fT or one ten billionth of the earth’s magnetic field, with a millisecond temporal resolution. Although MEG allows us to follow changes in brain activity millisecond by millisecond with 1-3 millimetre spatial resolution, there are still many limitations in solving the inverse problem, that is in accurately inferring the source of electrical activity inside the brain based on current distribution within the head as observed by MEG.. Nevertheless, MEG is a useful imaging tool for the study of higher brain function such as memory and cognition. By MEG measurements, we have obtained imaging of brain dynamics related to mental rotation task and short-term memory task of human subjects.

In comparison with MEG, functional magnetic resonance imaging (fMRI), enables visualization of the location of brain functions without such troublesome inverse problems. However, this technique only provides metabolic information or magnetically obtained information about changes in blood flow and a blood oxygenation level dependent (BOLD) effect within the brain vessels, which is only of indirect help in understanding brain function. Direct images of neuronal electrical activity cannot be obtained by using fMRI. We are presently investigating current-distribution imaging that offers direct images of neuronal electrical activity as well as impedance imaging that is designed to visualize electrical conductivity in the living organism. Electrical MRI such as current MR imaging and conductivity MR imaging will lead the way to a new horizon in brain study in future.

We have observed that water was parted when water was exposed to a magnetic field of 8T with a gradient magnetic field of 50 T/m. We have also observed that when a 8T magnetic field was applied to adherent cells such as osteoblasts, vascular endothelial cells, smooth muscle cells and Schwann cells, they proliferated in a direction parallel to the direction of the magnetic field. This result indicates the possibility of controlling bone formation, angioplasty, and even nerve regeneration by applying magnetic fields from outside the body. This is the harbinger of new techniques for applying magnetism in tissue engineering and regenerative medicine.

Bioimaging and biomagnetics are thus leading medicine and biology into a new horizon through its novel applications of magnetism.

 

icst2005@massey.ac.nz