The interfacing of digital image acquisition modalities to the picture archiving and communication system (PACS) plays a major part in the conversion from a traditional film-based radiology practice ...to one that relies almost entirely on soft-copy reading. The Baltimore Veterans Affairs Medical Center (VAMC) is one of the first filmless hospitals in the world. Since 1993, it has used computed tomography (CT) scanners connected to a commercial PACS to provide digitized patient images for filmless reading. Over the years, the evolution of Digital Imaging and Communications in Medicine (DICOM) standards, advances in networking technologies, and enhancements in PACS and hospital information system (HIS) software have greatly improved this system's robustness and patient/study identification accuracy. The result has been a major increase in productivity.
Given the nonexistence of a multidimensional competitive state anxiety inventory for children, the 27-item Competitive State Anxiety Inventory (CSAI-2; Martens, Vealey, & Burton, 1990) was revised. ...The first phase of the process entailed administering a version (the CSAI-2C) with language modified for children ages 8 to 12 years (N = 119). Exploratory factor analysis supported a 3-dimensional competitive anxiety model (Cognitive Anxiety, Somatic Anxiety, and Confidence). The revised inventory includes 5 items per scale compared to the 9 items per scale on the CSAI-2. The second phase of test development for the CSAI-2C included adding items to assess Concentration Disruption (CD). Exploratory factor analytic procedures (N = 627) further supported the original 3 scales, but adequate measurement of the CD dimension was not evidenced. The final phase (N = 632), employing confirmatory factor analysis (CFA), demonstrated the psychometric worthiness of a 3-dimensional model in assessing competitive state anxiety using the CSAI-2C.
We report the isolation of seven single‐copy nuclear DNA loci from the Caribbean reef‐building coral, Montastraea annularis. All loci are polymorphic at the nucleotide level, and three loci have ...readily screened restriction enzyme site polymorphisms that can help to rapidly assess population genetic structure. Use of these markers can provide baseline genetic information concerning the population dynamics of dominant stony corals and fuel the implementation and management of appropriate conservation strategies.
We report the isolation and characterization of seven microsatellite loci from the Caribbean reef‐building coral, Montastraea annularis. All loci are polymorphic with allele numbers ranging from five ...to 31 and observed heterozygosities from 0.17 to 0.89. These loci can be used in assessing gene flow patterns and diversity of this stony coral species both for local coral reef management purposes as well as for elucidating population connectivity within the greater Caribbean basin. These markers should also be applicable to other species of Montastraea and for resolving taxonomic relationships within the M. annularis species complex.
On teaching AI and expert systems courses Garcia, O.N.; Perez, R.A.; Silverman, B.G. ...
IEEE transactions on education,
02/1993, Letnik:
36, Številka:
1
Journal Article
Recenzirano
The experiences of faculty members from departments of engineering, mathematics, and computer science throughout the United States and Puerto Rico who came together for three weeks to discuss ...effective ways to teach artificial intelligence to undergraduates are outlined. The paper describes the rationale for the development of three main topic areas: artificial intelligence, expert systems, and symbolic and logic programming, and it includes syllabi for these topics. Also included is a discussion of the results obtained after a year of using the materials and techniques gathered during the original meeting.< >
The authors have designed an experiment to detect a hitherto unrecognized interaction between high doses of the glucocorticoid, dexamethasone, and brain irradiation. Eighteen juvenile male rhesus ...monkeys received 1800 rads to the whole brain in 8.5 minutes. For 1 1/2 days before and 10 1/2 days after the irradiation, nine animals received approximately 2.9 mg/kg/day of dexamethasone intramuscularly in addition to irradiation, while the remaining nine animals served as the control group and received saline. All animals eventually developed a progressive neurological syndrome, and died of delayed radiation necrosis of the brain. The two groups were compared with regard to latency to onset of clinical signs, survival time, and number, distribution, and location of lesions of radionecrosis. Large doses of desamethasone did not alter the susceptibility of the primate brain to delayed radiation necrosis. Detailed morphological study of the radionecrotic lesions supports the hypothesis that most, if not all, of the lesions develop as the consequence of injury to blood vessels.
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