University of Colorado Colorado Springs

About: University of Colorado Colorado Springs is a education organization based out in Colorado Springs, Colorado, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 6664 authors who have published 10872 publications receiving 323416 citations. The organization is also known as: UCCS & University of Colorado at Colorado Springs.

Nonlinear Wave Equations

Abstract: where := −∂2 t +∆ and u[0] := (u, ut)|t=0. The equation is semi-linear if F is a function only of u, (i.e. F = F (u)), and quasi-linear if F is also a function of the derivatives of u (i.e. F = F (u,Du), where D := (∂t,∇)). The goal is to use energy methods to prove local well-posedness for quasilinear equations with data (f, g) ∈ Hs × Hs−1 for large enough s, and then to derive Strichartz estimates to deal with semi-linear problems with data (f, g) ∈ Ḣ1 × L2. We begin, however, by deriving various conservation laws for solutions of wave equations.

Stress-buffering factors related to adolescent coping: a path analysis.

Abstract: To uncover those factors that buffer the impact of stressful negative experiences on adolescent adjustment, a theoretical model of adolescent stress and coping, with social support and social problem solving proposed as moderators, was investigated using path analysis. The study was conducted with 122 ninth-and tenth-grade nonreferred high school students. Using the LISREL statistical package (Joreskog & Sorbom, 1986), it was found that a recursive loop leading from stress outcomes back to negative stressors did not allow for a successful solution to the model. However, the effects of stressful events on adjustment were mediated by coping resources, which included a combination of problem-solving abilities and social support. Overall, the findings replicated previous investigations that have demonstrated direct relationships among stressful life events, social support, problem solving, and adolescent adjustment. While a successful fit to the theoretical model was not attained, it was concluded that a refined model may provide a more acceptable solution.

Individual characterization of broadband sampling oscilloscopes with a nose-to-nose calibration procedure

Abstract: A method is proposed to find the individual impulse response of broad-band sampling oscilloscopes (HP54124T, 50 GHz bandwidth). The method is based on the fact that, when the oscilloscope is sampling a dc voltage, pulses are launched from the sampler towards the input connector. These pulses contain information on the scope's characteristic and can be measured by a second oscilloscope. This type of measurement is called a "nose-to-nose" calibration. Applying deconvolution techniques to the result of this measurement, the characteristic of the two scopes can be found, assuming that the two scopes are identical. To avoid relying on this assumption, three oscilloscopes can be used. The nose-to-nose is then applied three times, with a different pair of scopes connected together each time. The individual characteristics of the three sampling oscilloscopes are then calculated. Both SPICE simulations and close correspondence between swept-sine measurements and this method indicate that it is probably the most accurate method available at this moment to calibrate broadband sampling oscilloscopes. Several measurement uncertainties and practical problems are identified. The phase contribution of the sampling aperture can never be determined by this method, but there is strong evidence that the effect is negligible. Practical measurement problems are related to linearity of the samplers, additive noise, time-base jitter, and time-base drift. >

Ambivalence Toward the Body: Death, Neuroticism, and the Flight From Physical Sensation

Abstract: Based on terror management theory, the authors suggest that ambivalent reactions to the human body are partially rooted in the association of the physical body with inescapable death and that individuals high in neuroticism are particularly vulnerable to such difficulties. Three experiments demonstrated that priming thoughts about one's death leads individuals high in neuroticism to flee from physical sensations, including pleasurable ones. In response to mortality salience, highly neurotic individuals spent less time submerging their arm in ice-cold water and using an electric foot massager but did not avoid stimulation in nontactile modalities (i.e., listening to music). The discussion highlights the role of existentially motivated self-repression in inhibitions surrounding the body.

Ensuring creative approaches in information system design

Abstract: Improvement in computing capability is one way to aid US companies in recapturing competitive edge. The easy applications have been computerized; the difficult ones lie ahead. Creative approaches are needed to computerize those difficult applications. Yet IS has apparently little interest in the subject of creativity; less than a half-dozen articles on the subject have been published in the 35-year history of the discipline. The author reviewed the literature in other disciplines of art, science, engineering, psychology and education, to determine how creativity techniques had been utilized in those disciplines. The research revealed that many of those techniques are useful for the IS field. Definitions of creativity are provided, then three classifications of creativity research are reviewed: Rothenberg, Ackoff/Vergara, and Rosner/Abt. Creativity techniques are illustrated for general problem solving. The author advocates the use of creativity techniques in the information system development process at four points: near the conclusion of requirements definition, logical design, physical design and program design. Use of creativity techniques at each of these points is illustrated. By delaying convergence on a solution, new approaches and new alternatives can be generated and evaluated. These approaches can produce the systems needed to assist US companies in international competition.