Return-to-launch-site three degree of freedom analysis, constant inertial attitude during the fuel dissipation phase

Results are presented of a study to show the effect of selecting a constant inertial attitude during the fuel dissipation phase of a return-to-launch-site abort. Results are also presented which show that the selection of the constant inertial attitude will affect the arrival point on the range-velocity target line. An alternate selection of the inertial attitude will provide control over the trajectory shape

Response of Selected Microorganisms to Experimental Planetary Environments

Results of studies in anaerobic phosphorus metabolism are presented. Specific topics discussed include: (1) anaerobic utilization of PH3; (2) reduction of phosphate or phosphite; (3) isolation of organisms which utilize phosphite or phosphate anaerobically as a final hydrogen acceptor; and (4) the toxicity of PH3 to the organisms. Techniques of anaerobic microbiology associated with space hardware were also studied. These include: (1) the Brewer anaerobe jar/GasPak system; (2) a new procedure to grow aerobes and anaerobes simultaneously; (3) a culture medium to differentiate oblagate from facultative anaerobes; and (4) a procedure to quantitate O2 sensitivity of anaerobes

A study of psychrophilic organisms isolated from the manufacture and assembly areas of spacecraft to be used in the Viking mission

The ability of psychrophilic microorganisms to grow in some of the environmental conditions suggested for Mars is studied with particular attention given to the effects of moisture and nutrients on growth. Results of growth with the slide culture technique are presented and indicate that this technique can be a rapid and sensitive technique for demonstration of microbial growth under various environmental conditions. Additional soil samples have been obtained from Cape Kennedy, and results of these assays at various low temperatures for psychrophilic populations are presented. The heat resistance of some of the psychrophilic sporeformers have been determined. Psychrophilic organisms were isolated from the teflon ribbons at Cape Kennedy and characterization of these was begun. In addition, heat survivors from the teflon ribbons are being investigated, and partial characterizations of these are presented

Socio-spatial experiences of part-time community college faculty

2022 Spring.Includes bibliographical references.Nearly half of the undergraduate student population in the United States attends community colleges (Bailey, Jaggars, & Jenkins, 2015), and in serving these students, community colleges rely heavily on part-time faculty (Jaeger & Egan, 2009). The reliance on part-time faculty is typically cost-motivated and a symptom of the neoliberal influences on higher education (Levin, 2007; Saunders, 2008). Part-time faculty often lack resources and support, are poorly compensated, do not receive benefits, and their teaching schedules are inconsistent and unreliable (Caruth & Caruth, 2013). The purpose of this study was to examine the everyday lived experiences of part-time community college faculty through a socio-spatial lens. The research was conducted as a case study and conceptually framed by institutional ethnography and critical geography. Methods included interviews, mental sketch mapping, and document analysis. The combination of methods was entirely qualitative and framed from a constructivist lens. Mental sketch mapping led to reflective spatial narratives that uncovered the ways that part-time faculty influenced and were influenced by spaces. Findings included the limited spaces participants utilized and felt comfortable in at the college, the lengths that they went to support their students, the challenges and barriers faced in teaching and other work including poor classroom and office spaces, and the lack of inclusion, despite the institution's efforts. The ruling relations of the college were evident in individual interactions, uses of space, and institutional policies and processes

Strength in numbers? Not always!

We propose a simple model to compute the probability of success under a quorum sensing strategy. We show that a quorum sensing strategy has a higher probability of success than an individualistic strategy when, for instance, the probability of success for a single individual is low and the cost of building a quorum is not too high. On the other hand if the cost of building a quorum is too high then the probability of success under quorum sensing always decreases as a function of the quorum

From the Russells to the Pilots: The Beginning and End of North Union

The North Union Shakers lived on 1,393 acres of land in northeastern Ohio’s Connecticut Western Reserve from 1822 to 1889. They called their land “The Valley of God’s Pleasure.” The North Union Shaker Village, located just eight miles east of Cleveland, was destined to become the garden city known as Shaker Heights, Ohio. This is the story of two married couples who were members of the North Union Shaker Community. The first couple was Ralph and Laura Russell; they represent the beginning of North Union Village. The second couple was John and Maria Pilot; they represent the end of North Union

Adult Education Principles in a Teacher Mentoring Program: A Grounded Theory

A qualitative study using grounded theory was conducted to determine the use of adult education principles in a school mentoring program. The study was conducted in a middle school in rural South Georgia during the 2006-2007 school year. Data were collected through face-to-face interviews with 25 participants: 11 proteges, nine mentors, and 5 mentor program coordinators. Insights into the dynamics of mentoring relationships and administration of the mentoring program were illustrated by stories of selected participants. In this study, adult education principles were identified as (a) respect, (b) participation, (c) collaboration, (d) dialogue, (e) problem posing as a catalyst toward problem solving, (f) critical reflection, (g) self-direction, (h) praxis or learning for action, and (i) empowerment. By constantly sifting and sorting the data and looking at the program’s data holistically, patterns and themes emerged. Patterns showed that volunteer status, level of training, and participants’ readiness played an important role in the quality of mentoring relationships. Themes that emerged from the data included (a) communication and rapport between mentors and proteges, (b) readiness for the roles of mentors and proteges and (c) interrelation of rapport and readiness. Through the use of grounded theory methodology, it was determined that the school’s mentoring program was not conceptualized or administered as a form of adult education. Mentoring relationships within the school reflected no consistent awareness or use of adult education principles. Principles most likely to be used were respect, dialogue, collaboration, and participation. Least obvious were problem posing as a catalyst to problem-solving, critical reflection, incorporation of previous experiences, self-direction, praxis, and empowerment. Recommendations were made for more conscientious pairing of mentors and proteges, improved participant readiness, and enhanced mentor training. Most importantly mentoring programs should be viewed as adult education and mentors should be willing and trained to accept this role. Further study was recommended regarding the concept of group or multiple mentors and the general use of adult education principles in workplace training

Some Effects of Antibiotics on a Candida Albicans Population in the Intestinal Tracts of Chickens

Poultrymen are becoming extremely conscious of any disease which results in a decrease in production. Some of these diseases are the result of new intensive methods of management which place considerable stress on the individual bird. Probably the most important fungal diseases of poultry are aspergillosis, favus and moniliasis. Aspergillosis, an infection of the respiratory tract, is generally thought to be caused by Aspergillis fumigatus Frensius. Favus, a chronic dermatomyoosis (dermatomycosis?) is caused by Achorian gallimae. Moniliasis an infection of the mucous membrane lining the upper digestive tract is associated with Candida albicans and other members of the genus Candida. Of these three zyootic (mycotic) infections, only moniliasis has been more than occasionally implicated in disease of epidemic proportions. Moniliasis is generally thought to be associated with unsanitary conditions and possibly secondary to certain debilitating factors. It is also assumed that that Candida albicans organism present as a commensal or parasite in some intestinal tracts, may serve as a reservoir of infection. It was the purpose of this study to determine the effects of certain antibiotics in the form of feed supplements on this intestinal parasite, and to learn something of the cultural characteristics of this yeastlike fungus

Swipe, Tap, and Read: Research on E-book Tools, Features, and Student Engagement

This study explores the digital tools and features that students had access to and interacted with while reading e-books on Raz-Kids. The goal was to use this information to understand how e-book reading impacted student motivation and engagement. This study was conducted for five weeks, and implemented three days per week with two first grade classes during Daily 5 or Reading Centers. I collected qualitative data by conducting a student survey, documenting the e-books that the student participants read and the digital tools and features that they used, recording field note observations, and conducting audio-recorded interviews with the student participants. Findings were derived from the research. The findings were a) the impact of Raz-Kids on reading engagement; b) first graders’ knowledge of e-book tools and features using Raz-Kids; and c) first graders’ access to and interaction with e-books outside of the classroom. Conclusions of this research study include that a) student reading experience is influenced by the Raz-Kids star system; b) the quantity of e-book tools lead to exploration; and c) the quality of e-book features impact student reading engagement