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  • 1
    Electronic Resource
    Electronic Resource
    Novel method of Raman data acquisition (1973)
    s.l. : American Chemical Society
    Analytical chemistry 45 (1973), S. 2009-2014 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac60334a005
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  • 2
    Electronic Resource
    Electronic Resource
    TIME SERIES AND TURNING POINT FORECASTS: A COMPARISON OF ASSOCIATIVE MEMORIES AND BAYESIAN ECONOMETRIC TECHNIQUES APPLIED TO LESAGE'S DATA (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of regional science 34 (1994), S. 0 
    Details
    ISSN: 1467-9787
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geography , Economics
    Notes: . Associative memory techniques are drawn from the artificial intelligence literature, and have demonstrated considerable utility for parameter identification in dynamical systems. Previous turning point forecasts constructed by LeSage are compared to forecasts generated by associative memories and simple autoregressive models. Both the associative memories and the autoregressions perform as well or better than the more complicated econometric procedures described by LeSage, with the exception of West and Harrison's (1989) dynamic linear model specification. Extensions are suggested.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-9787.1994.tb00852.x
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  • 3
    Electronic Resource
    Electronic Resource
    An Analysis of Onsite Versus Offsite Dental Care for an Institutionalized Population (1982)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of public health dentistry 42 (1982), S. 0 
    Details
    ISSN: 1752-7325
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-7325.1982.tb02656.x
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Predicting the impact of climate change on the spatial pattern of freshwater fish yield capability in eastern Canadian lakes (1992)
    Springer
    Climatic change 22 (1992), S. 327-346 
    Details
    ISSN: 1573-1480
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Equations of fish yield in lakes as a function of mean annual air temperature have been published for lake whitefish, northern pike, and walleye. Using the contouring and modelling features of a geographic information system (Tydac Technologies' SPANS), we prepared maps of (i) species distribution, (ii) mean annual air temperature, and (iii) temperature increases predicted by the Goddard Institute for Space Studies' global climate model (GISS-GCM). We combined these maps with the yield equations for the three study species to form a regional model predicting the spatial distribution of yield capability in eastern Canada with and without climate change. The GISS-GCM predicts temperature increases of 2.5 to 7.7 °C (mean = 4.5 °C) in eastern Canada, midway between the values predicted by two other GCMs considered. The regional model predicts a substantial spatial re-distribution of fishery capabilities. Areas now supporting high yields become marginal and areas at the margin of, or outside, the current species range become ‘optimal’. Without efforts to prevent temperature increases or large artificial efforts to redistribute preferred fish species, Canadian freshwater fisheries will suffer major disruptions given the temperature increases predicted by the GISS-GCM.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00142432
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  • 5
    Electronic Resource
    Electronic Resource
    Empirically derived pain-patient MMPI subgroups: Prediction of treatment outcome (1986)
    Springer
    Journal of behavioral medicine 9 (1986), S. 51-63 
    Details
    ISSN: 1573-3521
    Keywords: pain ; MMPI ; treatment outcome ; cluster analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Psychology
    Notes: Abstract Fifty-seven male chronic pain patients admitted to an inpatient multimodal pain treatment program at a Midwestern Veterans Administration hospital completed the MMPI, Profile of Mood States (POMS), Tennessee Self-Concept Scale (TSCS), Rathus Assertiveness Schedule (RAS), activity diaries, and an extensive pain questionnaire. All patients were assessed both before and after treatment, and most also were assessed 2–5 months prior to treatment. No significant changes occurred during the baseline period, but significant improvements were evident at posttreatment on most variables: MMPI, POMS, TSCS, RAS, pain severity, sexual functioning, and activity diaries. MMPI subgroup membership, based on a hierarchical cluster analysis in a larger sample, was not predictive of differential treatment outcome. Possible reasons for comparable treatment gains among these subgroups, which previously have been shown to differ on many psychological and behavioral factors, are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00844644
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  • 6
    Electronic Resource
    Electronic Resource
    Pain-patient MMPI subgroups: The psychological dimensions of pain (1982)
    Springer
    Journal of behavioral medicine 5 (1982), S. 201-211 
    Details
    ISSN: 1573-3521
    Keywords: pain ; MMPI
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Psychology
    Notes: Abstract Two-hundred-forty male pain patients were given the MMPI and an extensive pain history questionnaire. A hierarchical clustering procedure was used, and three distinct profiles emerged. One profile was essentially “normal,” while a second profile revealed the “hypochondriasis” configuration, and a third was highly elevated on scales which reflect a “psychopathological” type of profile. A discriminant analysis yielded functions correctly classifying over 90% of the subjects in each group. Although the three groups did not significantly differ on age, education, income, IQ, assertiveness, type of pain, or years of pain duration, they did differ on the pain history questions relating to pain severity and pain impact on their lives. The psychopathological group reported significantly more distress than the hypochondriasis group, and the hypochondriasis group reported significantly more distress than the normal group. The implications for pain treatment are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00844809
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  • 7
    Electronic Resource
    Electronic Resource
    Simple calculation of the velocity profiles for pulsatile flow in a blood vessel using mathematica (1993)
    Springer
    Annals of biomedical engineering 21 (1993), S. 45-49 
    Details
    ISSN: 1573-9686
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: Conclusion The numerical solution of Womersley flow can provide important physical insights to the student of Biofluid dynamics. This computer program is less than 70 lines and can be entered rapidly without extensive knowledge of Mathematica. Through manipulations, the effect of changes in the unsteadiness parameter, Reynolds number, and waveform shape on the pulsatile hemodynamics in straight tubes, can be explored. The exercise reinforces the importance of unsteady forces on the complex processes of physiologic flow and illustrates the usefulness of computers in fluid mechanics analyses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02368163
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  • 8
    Electronic Resource
    Electronic Resource
    Experimental and Computational Flow Evaluation of Coronary Stents (2000)
    Springer
    Annals of biomedical engineering 28 (2000), S. 386-398 
    Details
    ISSN: 1573-9686
    Keywords: Stents ; Vascular prosthesis ; Computational fluid dynamics ; Restenosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: Abstract Local flow alterations created by a metallic stent in a simulated coronary artery were studied to compare the hemodynamic effects of two different stent geometries. Dye injection flow visualization and computational fluid dynamics were used. Resting and exercise conditions were studied. Flow visualization using the dye injection method provided a qualitative picture of stent hemodynamics while the computational approach provided detailed quantitative information on the flow next to the vessel wall near the intersections of stent wires. Dye injection visualization revealed that more dye became entrapped between the wires where the wire spacing was smallest. The dye washout times were shorter under exercise conditions for both wire spacings tested. The computational results showed that stagnation zones were continuous from one wire to the next when the wire spacing was small. Results from greater wire spacing (more than six wire diameters) showed that the stagnation zones were separate for at least part of the cardiac cycle. The sizes of the stagnation zones were larger under exercise conditions, and the largest stagnation zones were observed distal to the stent. These studies demonstrate that stent geometry has a significant effect on local hemodynamics. The observation that fluid stagnation is continuous in stents with wire spacings of less than six wire diameters may provide a criterion for future stent design. © 2000 Biomedical Engineering Society. PAC00: 8719Uv, 8719Hh, 8780-y
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1114/1.276
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  • 9
    Electronic Resource
    Electronic Resource
    Computer simulation of the propagation of contrast medium in a coronary artery during one cardiac cycle (1995)
    Springer
    The international journal of cardiovascular imaging 11 (1995), S. 19-26 
    Details
    ISSN: 1573-0743
    Keywords: coronary flow ; indicator dilution theory ; coronary angiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In some angiographic methods for measurement of mean coronary flow in ml/min, a threshold is applied to ‘concentration-distance’ curves obtained from a constant rate injection by computing the intravascular contrast medium concentration along the main coronary branches. If the shape of the velocity profile would remain parabolic throughout the cardiac cycle, the correct threshold value would be ‘50% of the concentration at the injection site’. But, coronary flow being strongly pulsatile, the shape of the velocity profile must be expected to vary appreciably within the cardiac phase. In order to investigate if a single, appropriate threshold value nevertheless exists for a great variety of coronary flow pulses and velocity profiles, the spreading of contrast medium injected continuously in a tube perfused by a time varying flow Q(t) was studied by computer simulation. While the particular time courses of flow and velocity profile appear to be of secondary importance, the ratio ‘injection rate to peak coronary flow’ has a major impact. If it is equal to or greater than 1, a threshold value of 47% is the best choice. If the ratio is markedly less than 1, no appropriate threshold exists and use of the 47% threshold will result in considerable flow underestimations. This was fully confirmed by measurements of absolute coronary flow performed in patients.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01148950
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  • 10
    Electronic Resource
    Electronic Resource
    Photodegradation of UV absorbers: Kinetics and structural effectsPaper presented at the “16th International Conference on Advances in the Stabilization and Degradation of Polymers” in Luzern (Switzerland), June 14-17, 1994. (1995)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 232 (1995), S. 229-238 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: When poly(methyl methacrylate) films containing UV absorbers are exposed to UV light, the absorbers undergo photodegradation resulting in loss of absorbance. If the data extend for less than one half-life, both zero and first order kinetic treatment give fairly linear fits, but the rate constants so derived are dependent on the initial absorbance of the films. When the zero order rate constants are corrected to account for the higher rate of degradation near the surface compared with the bulk that occurs in highly absorbing films, consistent “infinite absorption” zero order rate constants are derived. The inhomogeneous degradation is due to only the highly absorbed, higher energy light contributing significantly to the degradation. For the benzophenone and benzotriazole classes of absorber, at least 65% of the degradation is due to light with wavelengths 〈 350 nm. Structural variations generally caused only small differences in the rates of degradation of these classes of absorbers unless the substitutions disrupted the intramolecular hydrogen bonds that are critical for stability. If the hydrogen bond is weakened, the absorber is less stable.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1995.052320114
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