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Abstract:[Applications and results of photon absorptiometry] [Ar ticle in Italian] Di Munno O, Occhipinti G, Pontrandolfo A. Istituto di Patologia Medica, Universit? di Pisa. Bone mineral content (CMO, mg/cm2) was measured at the distal radius by dual photon absorptiometry (DPA, I125, Am241) in 1.161 women (w), aged 20-87 years. Women were subdivided into different groups according to the presence and duration of menopause. For gross evaluation of spinal osteoporosis (OP), the results of spinal X-rays were graded as follows: score 0: no signs of OP; score 1: aspecific signs of OP; score 2: typical signs of OP; score 3: wedging or collapse of one or more vertebrae. Women in postmenopausal state showed significantly reduced CMO (p less than .0005) when compared to women in premenopausal state; a significant correlation was found between CMO and years since menopause (p less than .0001). Concerning the relationship between CMO and spinal score, a progressive decreases in CMO from score 0 to score 3 was present and the correlation was significant (p less than .0001). In addition, women with score 3 showed a mean CMO below the "fracture threshold", in spite of the large overlap in individual CMO values. Our data suggest that radial DPA should be maintained as a "screening" procedure for OP. PMID: 1770920 [PubMed - indexed for MEDLINE]
Abstract In this paper a new soft actuator based on dielectric elastomer is proposed. The actuator, called an antagonistically-driven linear actuator (ANTLA), has the muscle-like characteristics capable of performing the motions such as forward/backward/controllable compliance. In this paper, its dynamic analysis is performed with experimental verifications, and applications for robotic actuating devices are introduced
A six-month systems study of earth resource surveys from satellites was conducted and is reported. SKYLAB S-192 multispectral scanner (MSS) data were used as a baseline to aid in evaluating the characteristics of future systems using satellite MSS sensors. The study took the viewpoint that overall system (sensor and processing) characteristics and parameter values should be determined largely by user requirements for automatic information extraction performance in quasi-operational earth resources surveys, the other major factor being hardware ...
A six-month systems study of earth resource surveys from satellites was conducted and is reported. SKYLAB S-192 multispectral scanner (MSS) data were used as a baseline to aid in evaluating the characteristics of future systems using satellite MSS sensors. The study took the viewpoint that overall system (sensor and processing) characteristics and parameter values should be determined largely by user requirements for automatic information extraction performance in quasi-operational earth resources surveys, the other major factor being hardware ...
Abstract Not Available
Abstract One major challenge for grid environments is how to efficiently utilize geographically distributed resources given large communication latency introduced by wide area networks interconnecting different grid sites. In this paper, we use optical networks to connect four clusters from three different sites: Texas A&M University, University of Illinois at Chicago, and University of California at San Diego to form an optical grid as an OptIPuter testbed, and execute parallel visualization applications and scientific applications to analyze...
The use of a bipolar donor-recipient model of medical technology transfer is presented. That methodology is designed to: (1) identify medical problems and aerospace technology that in combination constitute opportunities for successful medical products; (2) obtain the early participation of industry in the transfer process; and (3) obtain acceptance by the medical community of new medical products based on aerospace technology. Problem descriptions and activity reports and the results of a market study on the tissue freezing device are presente...
Abstract One major challenge for grid environments is how to efficiently utilize geographically distributed resources given large communication latency introduced by wide area networks interconnecting different grid sites. In this paper, we use optical networks to connect four clusters from three different sites: Texas A&M University, University of Illinois at Chicago, and University of California at San Diego to form an optical grid as an OptIPuter testbed, and execute parallel visualization applications and scientific applications to analyze...
Metacomputing frameworks have received renewed attention of late, fueled both by advances in hardware and networking, and by novel concepts such as computational grids. HARNESS is an experimental metacomputing system based upon the principle of dynamic reconfigurability not only in terms of the computers and networks that comprise the virtual machine, but also in the capabilities of the VM itself. These characteristics may be modified under user control via a "plug-in" mechanism that is the central feature of the system. The system's capabiliti...
The use of a bipolar donor-recipient model of medical technology transfer is presented. That methodology is designed to: (1) identify medical problems and aerospace technology that in combination constitute opportunities for successful medical products; (2) obtain the early participation of industry in the transfer process; and (3) obtain acceptance by the medical community of new medical products based on aerospace technology. Problem descriptions and activity reports and the results of a market study on the tissue freezing device are presente...
A six-month systems study of earth resource surveys from satellites was conducted and is reported. SKYLAB S-192 multispectral scanner (MSS) data were used as a baseline to aid in evaluating the characteristics of future systems using satellite MSS sensors. The study took the viewpoint that overall system (sensor and processing) characteristics and parameter values should be determined largely by user requirements for automatic information extraction performance in quasi-operational earth resources surveys, the other major factor being hardware ...
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