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.

Evolution of Business System Analysis Techniques

Abstract: Until very recently, the evolution of business system analysis lagged hardware evolution by one full generation. During the first generation of business-oriented computers, in the 1950s, system analysts continued to use unit record-oriented analysis and design techniques. Between 1960 and 1970, computer.oriented techniques for system analysis were developed. The gap has narrowed to hMf a generation. Third generation techniques began to emerge six years after the first installation of third generation computers. The evolution of techniques for business system analysis is described, with emphasis on the requirements of new techniques to handle the complicated business systems of today.

Precursors and Consequences of Membership in Youth Gangs

Abstract: Explanations of gang membership were studied in a population of 11,000 secondary school students. Lower self-esteem, perceived academic ability, psychosocial health, and bonds with institutions appeared to precede gang membership (selection model). Greater drug use, greater delinquency, greater fear of harm, and being armed were precursors and consequences of gang membership (facilitation and selection models). "Wannabes" were partway between nonmembers and members. Findings were consistent with gang membership as a result of lack of social integration.

Size and Temperature Effects on the Surface Plasmon Resonance in Silver Nanoparticles

Abstract: The surface plasmon energy in spherical silver nanoparticles embedded in silica host matrix depends on the size and temperature of the nanoparticles. The depend- ences of the surface plasmon energy were studied for silver nanoparticles in the size range 11-30 nm and in the temper- ature interval 293-650 K. As the size of the nanoparticles decreases or the temperature increases, the surface plasmon resonance shifts to red. When the size of the nanoparticles decreases, the scattering rate of the conduction electrons increases, which results in the nonlinear red shift of the surface plasmon resonance. The red shift with temperature is linear for larger nanoparticles and becomes nonlinear for smaller ones. As the temperature of the nanoparticles increases, the volume thermal expansion of the nanopar- ticles leads to the red shift of the surface plasmon resonance. The thermal volume expansion coefficient depends on the size and temperature. It increases with a decrease of the nanoparticle size and an increase of the temperature.

Relationship of Two Vertical Jumping Tests to Sprint and Change of Direction Speed among Male and Female Collegiate Soccer Players.

Abstract: In collegiate level soccer acceleration, maximal velocity and agility are essential for successful performance. Power production is believed to provide a foundation for these speed qualities. The purpose of this study was to determine the relationship of change of direction speed, acceleration, and maximal velocity to both the counter movement jump (CMJ) and squat jump (SJ) in collegiate soccer players. Thirty-six NCAA Division II soccer players (20 males and 16 females) were tested for speed over 10 and 30 m, CODS (T-test, pro agility) and power (CMJ, SJ). Independent t-tests (p ≤ 0.05) were used to derive gender differences, and Pearson’s correlations (p ≤ 0.05) calculated relationships between the different power and speed tests. Female subjects displayed moderate-to-strong correlations between 30 m, pro agility and T-test with the CMJ (r = −0.502 to −0.751), and SJ (r = −0.502 to −0.681). Moderate correlations between 10 and 30 m with CMJ (r = −0.476 and −0.570) and SJ (r = −0.443 and −0.553, respectively) were observed for males. Moderate to strong relationships exist between speed and power attributes in both male and female collegiate soccer players, especially between CMJ and maximal velocity. Improving stretch shortening cycle (SSC) utilization may contribute to enhanced sport-specific speed.

Novel use of a high-energy excimer laser catheter for calcified and complex coronary artery lesions

Abstract: This study was designed to evaluate safety and effectiveness of the 0.9 mm excimer laser coronary catheter with increased laser parameters. We report a prospective trial of 100 calcified and/or balloon-resistant lesions where a new 0.9 mm excimer laser catheter was used at standard or higher energy level to facilitate angioplasty. Standard in-hospital clinical and angiographic parameters were collected and measured. Laser technical success was obtained in 87 lesions (92%), procedural success was reached in 88 lesions (93%), and clinical success in 82 lesions (86%). Increased laser parameters were used for 29 resistant lesions. This new 0.9 mm excimer laser coronary catheter using higher energy parameters seems to be safe and effective for management of calcified and nondilatable lesions.