Investigation of flame front phenomena - Effects of impressed acoustical fields Final report

Phenomena of impressed acoustical fields upon flame propagation rate

Unit organization of the topic first aid.

Includes tables and figures. Thesis (Ed.M.)--Boston Universit

Evaluation of proposed Skylab and SSP soap products

Three personal hygiene cleansing agents and one laundry detergent (sodium dodecyl benzene sulfonate), which are all candidates for use on long-duration space missions, were evaluated in terms of dermatological effects on human subjects and effects on microbiological species. None of the four materials exhibited adverse dermatological effects from either skin patch tests of two weeks duration or a simulated Skylab personal hygiene regimen of up to four weeks duration. No significant alterations in skin microflora during the use regimen were found. None of the four materials were found to serve as microbiological support media for the species tested, but a species of air-borne mold was observed to grow rapidly in a neutralized aqueous solution. None of the candidate agents was found to be strongly biocidal

Leadership in Student Distance Education Teams

Interactive video technology has become a widely used medium for education. A prominent implementation of this technology, interactive distance learning, involves groups of students at local and remote sites connected by audio and video teleconferencing. This approach has made the task of delivering vital undergraduate and graduate engineering courses to distributed audiences much easier. As this approach has permeated more curricula, distance education instructors have increasingly assigned projects that require distance learners to work together as an element of the final course grade. This trend presents an interesting opportunity for researchers to understand the nature of interactions among course participants involved in project teams. This paper presents the results of an investigation of project leadership behaviors in the distance learning environment. Surveys were administered via online protocol to fifty-three students, comprising nineteen project teams. Results indicate that those teams led by individuals who clarified roles and task requirements, and recognized the strengths and individual needs of teams members performed better on their assigned tasks. Implications for instructors utilizing project teams in distance education, as well as traditional teams where communication technology (e.g., email) is highly relied upon, are presented

Work, Nonwork, and Network: The Public and Private Lives of Women Chief Student Affairs Officers

Women make up a majority of those employed in higher education, yet they are still a minority in leadership positions. Completing a doctoral degree, relocating for career advancement, and working in demanding, high time commitment roles are typically required to achieve the chief student affairs officer (CSAO) position, as well as contributors to burnout and attrition in the field. This study sought to gain a deeper understanding of the intersection of career progression (work), balance (nonwork) and relationships (network) of women chief student affairs officers, specifically, how gender is an influence, understanding life roles and whether there is a cost of achievement in the field. The literature in the field suggests the achievement and constant maintenance of balance, which is viewed through a male construct, is the norm. It is evident that the need to understand the particular phenomenon of work and nonwork intersections of women, particularly in the chief role, gives voice to an issue for women that have been rarely heard in the field. This study utilized the naturalistic inquiry paradigm of research. The author conducted in-depth interviews of nine women CSAOs at colleges and universities across the United States. Data were analyzed using a constant comparative method which allowed the findings to emerge. The results show that women CSAOs felt that gender had a clear impact on their career both in their choices and how they were treated by others. The impact of gender has been felt at all stages in their careers including in their roles as CSAOs on issues of discrimination, leadership style, spousal expectations, and choices regarding if and when - or whether - to have children. Respondents also articulated the different domains of their life in terms of roles, but did not seem them as distinctly separate in the manner in which they manage their lives. Additionally, all of the respondents felt their public and private lives intersected and that keeping them in separate domains was not only impossible, but unnecessary. Lastly, there were significant and ongoing costs of achievement in the field, mostly notably lack of friends and short and/or long term health problems

School-Level Predictors of Academic and Athletic Success

The purpose of this study was to determine if specific school-level variables predict a high school’s academic performance and the success of its athletic department. A nonexperimental multivariate ex post facto correlational design and a group comparison design were employed in the study. Georgia public high schools competing in the GHSA classifications AAAAA, AAAA, and AAA during the academic years 2008-2010 were included in the study. Logistic regression was used to determine if the school-level variables predicted a school’s academic performance. A Mann-Whitney U test was used to determine if high-performing and low-performing schools were significantly different in terms of athletic department success. The predictor variables were able to accurately predict academic performance for over 82% of schools. While the percentage of minority students, graduation rate, and GHSGT scores were significant predictors in two out of the three classifications, the percentage of economically disadvantaged students was not a significant predictor. Significant differences existed between high-performing and low-performing schools in terms of overall athletic performance in GHSA classifications AAA and AAAA. Academic predictors (GHSGT scores and graduation rate) were linked to athletic achievement. Demographic variables (percentage of economically disadvantaged students and minority students) were significant predictors in classification AAA, but not in the larger classifications

A Matter of Priorities: Effects of Increased Opportunities for Extracurricular and Non-Traditional Learning Experiences on Student Time Management and Attitudes

Many schools are emphasizing non-traditional and extracurricular learning experiences for undergraduate engineering students. These include activities such as incorporating servicelearning projects into the classroom, involving students in design competitions (e.g., solar car, formula car races), and promoting involvement in traditional campus organizations. Often this emphasis is in response to changes in ABET requirements, desires of future employers, and needs to improve student retention. What are the effects of emphasizing these sorts of activities on student attitudes and time management decisions? We examine the influences on students\u27 priorities for allocating their time and their perceptions of the relative importance of available activities, especially traditional coursework. We present data relating key personality and motivational factors to patterns of student social involvement, organizational commitment, academic performance, and work habits and attitudes. Implications for educators and potential cost-benefit trade-offs for particular student subpopulations are also presented

Dairy Foods in a Moderate Energy Restricted Diet Do Not Enhance Central Fat, Weight, and Intra-Abdominal Adipose Tissue Losses nor Reduce Adipocyte Size or Inflammatory Markers in Overweight and Obese Adults: A Controlled Feeding Study

Background. Research on dairy foods to enhance weight and fat loss when incorporated into a modest weight loss diet has had mixed results. Objective. A 15-week controlled feeding study to determine if dairy foods enhance central fat and weight loss when incorporated in a modest energy restricted diet of overweight and obese adults. Design. A 3-week run-in to establish energy needs; a 12-week 500 kcal/d energy reduction with 71 low-dairy-consuming overweight and obese adults randomly assigned to diets: ≤1 serving dairy/d (low dairy, LD) or ≤4 servings dairy/d (adequate dairy, AD). All foods were weighed and provided by the metabolic kitchen. Weight, fat, intra-abdominal adipose tissue (IAAT), subcutaneous adipose tissue (SAT) macrophage number, SAT inflammatory gene expression, and circulating cytokines were measured. Results. No diet differences were observed in weight, fat, or IAAT loss; nor SAT mRNA expression of inflammation, circulating cytokines, fasting lipids, glucose, or insulin. There was a significant increase (P = 0.02) in serum 25-hydroxyvitamin D in the AD group. Conclusion. Whether increased dairy intake during weight loss results in greater weight and fat loss for individuals with metabolic syndrome deserves investigation. Assessment of appetite, hunger, and satiety with followup on weight regain should be considered

The proton and deuteron F_2 structure function at low Q^2

Measurements of the proton and deuteron $F_2$ structure functions are presented. The data, taken at Jefferson Lab Hall C, span the four-momentum transfer range $0.06 < Q^2 < 2.8$ GeV$^2$, and Bjorken $x$ values from 0.009 to 0.45, thus extending the knowledge of $F_2$ to low values of $Q^2$ at low $x$. Next-to-next-to-leading order calculations using recent parton distribution functions start to deviate from the data for $Q^2<2$ GeV$^2$ at the low and high $x$-values. Down to the lowest value of $Q^2$, the structure function is in good agreement with a parameterization of $F_2$ based on data that have been taken at much higher values of $Q^2$ or much lower values of $x$, and which is constrained by data at the photon point. The ratio of the deuteron and proton structure functions at low $x$ remains well described by a logarithmic dependence on $Q^2$ at low $Q^2$.Comment: 3 figures, submitted pape