Social studies references in six Rhode Island high schools

Thesis (Ed.M.)--Boston Universit

In-situ analysis of hydrazine decomposition products

A gas analyzer utilizing a nondispersive infrared (NDIR) detection system was used to monitor the ammonia and water vapor content of the products of a previously unused hydrazine gas generator. This provided an in-situ measurement of the generator's efficiency difficult to obtain by other means. The analyzer was easily installed in both the calibration and hydrazine systems, required no maintenance other than periodic zero adjustments, and performed well for extended periods in the operating range tested. The catalyst bed operated smoothly and repeatably during the 28 hr of testing. No major transients were observed on startup or during steady state operation. The amount of ammonia in the output stream of the gas generator was found to be a strong function of temperature at catalyst bed temperatures below 450 C. At temperatures above this, the efficiency remained nearly constant. On startup the gas generator efficiency was found to decrease with time until a steady state value was attained. Elevated catalyst bed temperatures in the periods before steady state operation was found to be responsible for this phenomenon

The psychological-type profile of lay church leaders in Australia

A sample of 845 lay church leaders (444 women and 401 men) from a range of 24 different denominations and movements (including house churches and independent churches) completed the Francis Psychological-Type Scales within the context of the 2006 Australian National Church Life Survey. The psychological-type profiles of these lay church leaders were almost identical to the type profiles of 1527 Australian churchgoers (936 women and 591 men) published in an earlier study by Robbins and Francis. The predominant types among female lay church leaders were ISFJ (21%), ESFJ (21%), and ISTJ (18%). The predominant types among male lay church leaders were ISTJ (28%), ISFJ (17%), ESTJ (13%), and ESFJ (12%). The SJ temperament accounted for 67% of the female lay church leaders and for 70% of the male lay church leaders. The strengths and weaknesses of the SJ leadership style are discussed

The Department of Defense Acquisition Workforce: Background, Analysis, and Questions for Congress

[Excerpt] This report provides background on the Department of Defense (DOD) acquisition workforce. Specifically, the report addresses the following questions: What is the acquisition workforce? What is the current size of the acquisition workforce? How has Congress sought to improve the acquisition workforce in the past? What are some potential questions for Congress to explore in the area of acquisition workforce management to improve acquisitions

Modeling Nonaxisymmetric Bow Shocks: Solution Method and Exact Analytic Solutions

A new solution method is presented for steady-state, momentum-conserving, non-axisymmetric bow shocks and colliding winds in the thin-shell limit. This is a generalization of previous formulations to include a density gradient in the pre-shock ambient medium, as well as anisotropy in the pre-shock wind. For cases where the wind is unaccelerated, the formalism yields exact, analytic solutions. Solutions are presented for two bow shock cases: (1) that due to a star moving supersonically with respect to an ambient medium with a density gradient perpendicular to the stellar velocity, and (2) that due to a star with a misaligned, axisymmetric wind moving in a uniform medium. It is also shown under quite general circumstances that the total rate of energy thermalization in the bow shock is independent of the details of the wind asymmetry, including the orientation of the non-axisymmetric driving wind, provided the wind is non-accelerating and point-symmetric. A typical feature of the solutions is that the region near the standoff point is tilted, so that the star does not lie along the bisector of a parabolic fit to the standoff region. The principal use of this work is to infer the origin of bow shock asymmetries, whether due to the wind or ambient medium, or both.Comment: 26 pages and 6 figures accepted to ap

Exclusion and Inclusion in the Australian AEC Industry and Its Significance for Women and Their Organizations

Based on valuing individual differences and embracing all employees, diversity management is relatively widespread and evident in many organizations. However, discriminatory work practices and lack of support persist in the architecture, engineering, and construction (AEC) industry, with higher turnover for women and lower participation rates still evident. While well-meaning, these diversity strategies and practices are costly. Therefore, it is essential to understand the benefits women and their organizations gain, as well as attributes associated with more diverse and inclusionary workplaces. A theoretical framework based on social exchange theory was used to develop a questionnaire administered to professional women in the AEC industry. The sample was divided into two groups, women who experienced inclusion or exclusion, and comparisons made using a range of statistical tests. While inclusion did not affect women’s career advancement, it was associated with increased satisfaction and decreased turnover intent. Inclusive companies had more female employees and leaders and also featured significantly higher mentoring and organizational training levels. The findings demonstrate inclusion to be essential for women’s retention and an important management objective for the AEC industry

Do Foreigners Invest Less in Poorly Governed Firms?

As domestic sources of outside finance are limited in many countries around the world, it is important to understand the factors that influence whether foreign outside investors provide capital to a country's firms. This study examines whether and why investor concern about corporate governance results in fewer foreign holdings. We use a comprehensive set of foreign holdings by U.S. investors as a proxy for foreign investment and analyze a sample of 4,411 firms from 29 emerging market and developed economies. We find that foreigners invest significantly less in firms that are poorly governed, i.e., firms that have ownership structures that are more conducive to outside investor expropriation. Interestingly, this finding is not simply a matter of a country's economic development but appears to be directly related to a country's information rules and legal institutions. We therefore argue that information problems faced by foreign investors play an important role in this result. Supporting this explanation, we show that foreign investment is lower in firms that appear to engage in more earnings management.

FTIR studies on the effect of concentration of polyethylene glycol on polimerization of Shellac

© Published under licence by IOP Publishing Ltd. In the present paper, it was reported the FTIR studies on the efect of polyethylene glycol on polimerization of shellac. The shellac was shellac waxfree, and the solvent was ethanol 96%. The shellac films were were prepared by solvent- evaporation method. The concentrations of polyethylene glycol having molecular weight of 400 were 10, 30, 60, and 90 w/w %. Three peak intensity bands of C= O stretching of ester at 1709 cm-1, O-H stretching of hydroxyl group at 3400 cm-1, and C-H stretching vibration at 2942 cm-1 were observed and related to polimerization of shellac. It was found that polymerization of shellac was slowed down by polyethyelene glycol, and the degree of polymerization of shellac decreased with increasing the concentration of polyethyelene glycol

Simulating the Martian Chemical Enivronment

We report on new analogue materials to simulate Martian rocks and soils, especially under realistic redox conditions