5 research outputs found
Technology 2001: The Second National Technology Transfer Conference and Exposition, volume 1
Papers from the technical sessions of the Technology 2001 Conference and Exposition are presented. The technical sessions featured discussions of advanced manufacturing, artificial intelligence, biotechnology, computer graphics and simulation, communications, data and information management, electronics, electro-optics, environmental technology, life sciences, materials science, medical advances, robotics, software engineering, and test and measurement
An Implantable Microsystem for Autonomous Intraocular Pressure Monitoring .
Glaucoma, a leading cause of blindness worldwide, is a disease in which the pressure within the eye is too high for the eye to tolerate and must be reduced in order to slow or prevent damage to the optic nerve. Conventional methods for monitoring eye pressure are normally only used in the physician’s office and rely on indirect measurement methods, leading to inaccuracies. Furthermore, intraocular pressure can vary throughout the day and also depends on activity. An autonomous implantable microsystem capable of monitoring intraocular pressure with minimal patient intervention would provide useful information to the clinician in the management of glaucoma.
This dissertation studies the feasibility of an integrated microsystem for autonomously measuring intraocular pressure. Small size ensures minimal impact on the patient, preventing the device from entering the field of view and simplifying implantation. Integrated haptics aid surgical implantation and minimize trauma while allowing the implant to be removed if needed. A touch-mode capacitive pressure sensor, fabricated using the dissolved wafer process, transduces intraocular pressure into capacitance with a linear response and a sensitivity of 26 fF/mmHg. A new fabrication technique has been developed to embed vertical interconnects within a glass package containing the pressure sensor, a microbattery, readout circuitry, and an antenna. This enables the vertical stacking of these components and very efficient use of limited volume. The 1.5 mm x 2 mm x 0.5 mm transparent parylene-coated glass package enables solar cells to be placed on the circuit chip for power generation, trickle charging an on-board microbattery formed using standard cleanroom materials and a non-toxic electrolyte. Flooded-cell tests verified the electrochemistry and achieved a current capacity of 8 µAh/mm2. A simple integrated readout circuit consuming 35 pW in the idle mode implemented a finite-state machine and used an optical wakeup trigger to further reduce power. The microsystem has also been demonstrated with a microprocessor to autonomously gather and store data, reading it out on demand. Finally, a pulse-based ultrawideband wireless transmission technique is proposed using non-resonant antennas. The all-digital transmitter is expected to consume much less power than conventional encoded wireless transmitters and eliminates complex circuitry.Ph.D.Electrical EngineeringUniversity of Michigan, Horace H. Rackham School of Graduate Studieshttp://deepblue.lib.umich.edu/bitstream/2027.42/89809/1/rhaque_1.pd
Shortest Route at Dynamic Location with Node Combination-Dijkstra Algorithm
Abstract— Online transportation has become a basic
requirement of the general public in support of all activities to go
to work, school or vacation to the sights. Public transportation
services compete to provide the best service so that consumers
feel comfortable using the services offered, so that all activities
are noticed, one of them is the search for the shortest route in
picking the buyer or delivering to the destination. Node
Combination method can minimize memory usage and this
methode is more optimal when compared to A* and Ant Colony
in the shortest route search like Dijkstra algorithm, but can’t
store the history node that has been passed. Therefore, using
node combination algorithm is very good in searching the
shortest distance is not the shortest route. This paper is
structured to modify the node combination algorithm to solve the
problem of finding the shortest route at the dynamic location
obtained from the transport fleet by displaying the nodes that
have the shortest distance and will be implemented in the
geographic information system in the form of map to facilitate
the use of the system.
Keywords— Shortest Path, Algorithm Dijkstra, Node
Combination, Dynamic Location (key words
Aerial Vehicles
This book contains 35 chapters written by experts in developing techniques for making aerial vehicles more intelligent, more reliable, more flexible in use, and safer in operation.It will also serve as an inspiration for further improvement of the design and application of aeral vehicles. The advanced techniques and research described here may also be applicable to other high-tech areas such as robotics, avionics, vetronics, and space