Improvement of Spatial Ability Using Innovative Tools: Alternative View Screen and Physical Model RotatorR

Spatial ability, which is positively correlated with retention and achievement in engineering, mathematics, and science disciplines, has been shown to improve over the course of a Computer-Aided Design course or through targeted training. However, which type of training provides the most beneficial improvements to spatial ability and whether other means would be more effective, is not known. In this research project, two tools for use in spatial ability training were developed and evaluated. One tool, a Physical Model Rotator (PMR), rotates a physical model of an object in synchronous motion with a model of the same object in CAD software. The other training tool, the Alternative View Screen (AVS), provides the user of CAD software with both a solid model (including shading) and a line version view of the object. Students with poor spatial ability were identified through standardized testing and they were then trained over a four week period for one hour each week. The effectiveness of the training tools was evaluated by comparing spatial ability test scores before and after training. Results showed an increase did exist when targeted training was provided. However, this effect was not statistically significant, possibly due to the small sample size

The Lantern Vol. 6, No. 3, June 1938

• Editorial • A Senior Muses • Affinity • From Darkness Into Light • Just an Old Bell! • Memories of a Friend • To a Small Animal as it Passes • The Sky and I • Between the Mountain and the River • Solace • Three Little Islands Far From Home • Beachcomberhttps://digitalcommons.ursinus.edu/lantern/1011/thumbnail.jp

Properties of slow-and fast-twitch skeletal muscle from mice with an inherited capacity for hypoxic exercise

Abstract Muscle fiber type, myosin heavy chain (MHC) isoform composition, capillary density (CD) and citrate synthase (CS) activity were investigated in predominantly slow-twitch (soleus or SOL) and fast-twitch (extensor digitorum longus or EDL) skeletal muscle from mice with inherited differences in hypoxic exercise tolerance. Striking differences in hypoxic exercise tolerance previously have been found in two inbred strains of mice, Balb/cByJ (C) and C57BL/6J (B6), and their F1 hybrid following exposure to hypobaric hypoxia. Mice from the three strains were exposed for 8 weeks to either normobaric normoxia or hypobaric hypoxia (1/2 atm). Hypoxia exposure led to a slightly higher 2b fiber composition and a lower fiber area of types 1 and 2a in SOL of all mice. In the EDL, muscle fiber and MHC isoform composition remained unaffected by chronic hypoxia. Chronic hypoxia did not significantly affect CD in either muscle from any of the three strains. There were relatively larger differences in CS activity among strains and treatment, and in SOL the highest CS activity was found in the F1 mice that had been acclimated to hypoxia. In general, however, neither differences among strains nor treatment in these properties of muscle vary in a way that clearly relates to inherited hypoxic exercise tolerance.

The Lantern Vol. 8, No. 2, March 1940

• The Music of Life • The Dice Were Loaded • Collecting People • Chemistry and Disease • Quest • Comrade • Entity • We Cannot Go On Forever • The Problem • Beside a Campfire • Smoke • Sunset on Winnipesaukee and Varied Reflections • All\u27s Quiet in the Early Morn • Torture • After the Concert • Nostalgiahttps://digitalcommons.ursinus.edu/lantern/1020/thumbnail.jp

Examining Industry Perspectives Related to Legacy Data and Technology Toolset Implementation

oai:ojs.edgj.org:article/6In this paper, results from a subset of the Purdue Spatial Visualization Test and a self-efficacy test developed by the authors are presented to determine whether certain object shapes, orientations, and types of rotations in standard spatial ability tests cause more difficulty than others and whether a solid object, which includes shading to distinguish different surfaces on the object, would have an effect on the spatial ability test results.  Lower spatial ability scores were observed for more complex object shapes, orientations, and number of rotations on both tests; however, viewing solid images as opposed to line images did not affect the spatial ability scores.  The subjects in this study were engineering students from various disciplines

Security: Collective good or commodity?

This is the author's accepted manuscript. The final published article is available from the link below. Copyright @ 2008 Sage.The state monopoly on the legitimate use of violence in Europe and North America has been central to the development of security as a collective good. Not only has it institutionalized the state as the prime national and international security provider, it has helped to reduce the threat from other actors by either prohibiting or limiting their use of violence. The recent growth of the private security industry appears to undermine this view. Not only are private security firms proliferating at the national level; private military companies are also taking over an increasing range of military functions in both national defence and international interventions. This article seeks to provide an examination of the theoretical and practical implications of the shift from states to markets in the provision of security. Specifically, it discusses how the conceptualization of security as a commodity rather than a collective good affects the meaning and implementation of security in Western democracies.ESR

Atomic Resonance and Scattering

Contains reports on four research projects.U.S. Air Force - Office of Scientific Research (Grant AFOSR-76-2972)National Science Foundation (Grant CHE79-02967)National Science Foundation (Grant PHY79-09743)Joint Services Electronics Program (Contract DAAG29-78-C-0020)Joint Services Electronics Program (Contract DAAG29-80-C-0104

Atomic Resonance and Scattering

Contains reports on three research projects.U.S. Air Force - Office of Scientific Research (Grant AFOSR-76-2972)National Science Foundation (Grant CHE79-02967)National Science Foundation (Grant PHY79-09743

Sex Offenders’ Perceptions of the Police and Courts:Are There Spill-Over Effects?

Individuals convicted of sexual offenses are rarely asked their views of the police and courts. The aims of this study were to examine the impact of feelings of guilt on perceptions of the police and police interview outcomes and spill-over effects from perceptions of the police to perceptions of the courts. Participants were 116 adult males incarcerated for sexual offenses who were invited to report their perceptions of police interviewers, feelings at the time of interview, interview outcomes, and perceptions of the court process. Feelings of guilt were related to perceptions of the police. Both feelings of guilt and perceptions of the police were associated with interview outcomes. Spill-over effects were found as perceptions of the police were directly related to perceptions of the courts. The findings highlight the important role of police officers as gatekeepers to the criminal justice system, with associated implications for police officers’ training and practice