The Edge Strength of Annealed and Heat-Strengthened Glass

Sadly, up until now, very little research has been conducted in the field of glass window strength. The purpose of this research, therefore, is to explore the topic of glass window strength such that we might offer some conclusive evidence as to the probable in-situ performance of structural windows. Our intention is to examine the specific phenomenon of thermally- induced stress and its effect on glass strength. J. G. Croll explains the existence of this well-documented problem. Whenever a structure is subjected to a varying temperature distribution, or where it is prevented from free expansion, stresses will be induced that are generally proportional to the difference in temperature from the unstressed state (Croll, pp.181-182)

Notes on Recent Cases

Notes on recent cases by Raymond Young, J. H. Flanagan, T. Havran, Joseph P. Guadnola, and Joseph Yoch

Eastern, Winter 2010

This issue contains articles about the HOPE School for the deaf and hard of hearing, Mann Gulch Fire survivor Bob Sallee, the career paths of a handful of EWU graduates, architect Len Zickler.https://dc.ewu.edu/alumni_pubs/1119/thumbnail.jp

Virus isolation studies suggest short-term variations in abundance in natural cyanophage populations of the Indian Ocean

Cyanophage abundance has been shown to fluctuate over long timescales and with depth, but little is known about how it varies over short timescales. Previous short-term studies have relied on counting total virus numbers and therefore the phages which infect cyanobacteria cannot be distinguished from the total count. In this study, an isolation-based approach was used to determine cyanophage abundance from water samples collected over a depth profile for a 24 h period from the Indian Ocean. Samples were used to infect Synechococcus sp. WH7803 and the number of plaque forming units (pfu) at each time point and depth were counted. At 10 m phage numbers were similar for most time-points, but there was a distinct peak in abundance at 0100 hours. Phage numbers were lower at 25 m and 50 m and did not show such strong temporal variation. No phages were found below this depth. Therefore, we conclude that only the abundance of phages in surface waters showed a clear temporal pattern over a short timescale. Fifty phages from a range of depths and time points were isolated and purified. The molecular diversity of these phages was estimated using a section of the phage-encoded psbD gene and the results from a phylogenetic analysis do not suggest that phages from the deeper waters form a distinct subgroup

Three Types of Business School Accreditation and their Relationships to CPA Exam Scores of Graduates

This research explores relationships between “business school accreditation” and average CPA exam scores of graduates from each of several types of accredited business programs. Our findings show graduates of AACSBInternational accredited programs have significantly higher CPA exam scores than do graduates from other types of accredited and unaccredited business programs. Somewhat surprisingly, graduates from ACBSP and IACEB accredited programs do not have average CPA exam scores higher than those of graduates of unaccredited business programs. More surprisingly, average CPA exam scores of graduates from ACBSP accredited programs are actually lower than those of graduates from unaccredited business programs on average

Utah County v. Judy Baxter et al : Reply Brief of Appellant

Appeal from the Judgment Rendered in the Fourth Judicial District Court in and for Utah County, State of Utah. The Honorable J. Robert Bullock, Judge

JT9D jet engine performance deterioration

The analytical techniques utilized to examine the effects of flight loads and engine operating conditions on performance deterioration are presented. The role of gyroscopic, gravitational, and aerodynamic loads are shown along with the effect of variations in engine build clearances. These analytical results are compared to engine test data along with the correlation between analytically predicted and measured clearances and rub patterns. Conclusions are drawn and important issues are discussed

Do Footprint-based CAFE Standards Make Car Models Bigger?

Corporate Average Fuel Economy (CAFE) standards have historically been set equal across all manufacturer fleets of the same type. Concerns about varying costs across firms and safety implications of standards that are set homogeneously across firms and models resulted in a policy shift towards footprint-based standards. Under this type of standard, individual car models face targets based on the size of the area between the wheelbase and wheel track, so that larger models face less stringent standards, and manufacturers who make, on average, larger cars will face a lighter fleet standard. Theoretical models have shown that this type of policy creates an incentive for firms to effectively lighten the standard they face, but no purely empirical study has tested this theoretical conclusion. I use a series of difference-in-difference estimations to test whether firms respond to the policy by increasing the footprint of individual models. I find some statistically significant evidence of an increase in footprint size in response to the policy when the treatment effect is assumed to increase by market share