Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 3 of 3
Full-Text Articles in Entire DC Network
Influence Of Lithophysal Geometry On Uniaxial Compression Of Tuff-Like Rock, Manisha Chawla
Influence Of Lithophysal Geometry On Uniaxial Compression Of Tuff-Like Rock, Manisha Chawla
UNLV Retrospective Theses & Dissertations
The high-level nuclear waste repository at Yucca Mountain includes tuff containing lithophysae or natural voids. This study investigated the effect of voids (porosity, distribution, shape and size) on the mechanical properties of cubes of analog lithophysal tuff (HydroStoneTB). A systematic study was made using three different randomly generated patterns of voids varying in shape, size, and geometrical distribution over a void porosity range of 0 to 30%. Each specified void pattern was cast into 6 in. length cubes, in triplicate, and was tested under uniaxial compression to find uniaxial compressive strength (UCS) and Young's Modulus (E); The results indicate that …
The Influence Of Collective Efficacy On Reporting Crime Among College Students, Violet Angelina Colavito
The Influence Of Collective Efficacy On Reporting Crime Among College Students, Violet Angelina Colavito
UNLV Retrospective Theses & Dissertations
Colleges and universities often aim to create a sense of community and a neighborhood feel for students. University campuses are designed in ways that reflect the factors of social cohesion measured by Goudriaan, Wittebrood, and Nieuwbeerta (2006). Crime on college campuses is an important social issue. Data from the NCVS suggest that between 1995 and 2002, college students experienced an estimated 400,000 to 530,000 violent crimes each year; yet only about 35% of violent victimizations against college students were reported to the police (Baum 2005, and Hart 2003). Yet, research exploring the effect of social cohesion and collective efficacy on …
The Pluto Debate: Influence Of Emotions On Belief, Attitude, And Knowledge Change, Suzanne H Broughton
The Pluto Debate: Influence Of Emotions On Belief, Attitude, And Knowledge Change, Suzanne H Broughton
UNLV Retrospective Theses & Dissertations
In line with the "warming trend" (Sinatra, 2005), this study examined the influence of emotions during controversial conceptual change. Issues in science may trigger highly emotional responses (e.g., evolutionary theory). However, it is unclear whether these emotions facilitate or inhibit change; I investigated the nature of emotions engendered when learning about a controversial science topic, Pluto's reclassification, including the valence (positive/negative) and activation (activating/deactivating) of emotions (Pekrun et al., 2002). I also investigated whether belief, attitude, and/or conceptual change could be facilitated through rereading a refutation text and/or rereading during small group discussions. Refutation texts directly state a common misconception, …