Resolving an Individual One-Proton Spin Flip to Determine a Proton Spin State

Previous measurements with a single trapped proton or antiproton detected spin resonance from the increased scatter of frequency measurements caused by many spin flips. Here a measured correlation confirms that individual spin transitions and states are detected instead. The high fidelity suggests that it may be possible to use quantum jump spectroscopy to measure the p and \pbar magnetic moments much more precisely.Comment: 4 pages, 7 figure

THE IMPACT OF ENERGY PRICES ON OPTIMUM MACHINERY SIZE AND THE STRUCTURE OF AGRICULTURE: A GEORGIA EXAMPLE

Demand and Price Analysis, Resource /Energy Economics and Policy,

Good to great: a framework for improving instruction In a ninth grade academy

This participatory action research project explores the leadership of a female African American high school principal in an urban district who applies the principles in Jim Collins\u27 Good to Great (2001, 2005) to improve academic performance in a ninth grade academy. Participatory Action Research (PAR) is defined as planning, acting, observing, reflecting, and repeating each cycle in a spiral of self-reflective cycles. The data was captured through qualitative and quantitative data collection strategies. The study is written as an autoethnographic self-narrative and is a self-reflective study of my leadership. The findings of this study suggest that applying the principles in Jim Collins\u27 (2001, 2005) Good to Great Framework as a second-order change initiative can increase academic performance in an urban school district by improving classroom instruction. This study although not statistically significant, allows for the preponderance of inferences and is significant and germane to female urban school administrators

Your Favorite Place

This is a composite novel based on travelers

AN EXISTENTIAL PHENOMENOLOGICAL EXPLORATION OF THE LIVED EXPERIENCES OF MOTHERS IN DUAL-CAREER FAMILIES

The purpose of the present study was to explore and describe the lived experiences of mothers living in dual-career families. Using existential phenomenology as the guiding research methodology, I interviewed 10 mothers living in dual-career families. Analysis of the interview transcripts revealed four themes that stood out as figural for participants in the study: (a) Free time isn\u27t really free anymore : Timing is Everthing; (b) It\u27s because of the support I get : Supporting Me; (c) I feel like I\u27m lacking in one area all the time, just a little bit : Struggling to Find a Balance; and (d) I know how I would do things : Knowing Myself. Each theme stood out against the ground of world, specifically the two worlds of home and work and the struggle that existed in integrating the two. Study findings revealed that the two primary struggles faced by these mothers living in dual-career families were those associated with balancing and time. A limited amount of time necessitated a need to try to balance home and work, a balance that was not easily achieved. Mothers perceived support networks and certain personality characteristics as helpful in balancing the two worlds (although personality characteristics were perceived as disadvantageous at times). Although challenges existed for these mothers, they noted overwhelmingly that they desired to have a career. These mothers saw their careers as one of the primary benefits of the dual-career lifestyle, and it was a lifestyle they willingly chose. Two findings from the study warrant future research. First, supportive others in the community were an integral part of the support network for mothers in the present study, and little empirical literature is dedicated to the impact of this type of support on the dual-career family. Second, participants perceived certain personality characteristics as either advantageous or disadvantageous in helping them navigate the dual-career lifestyle, and little empirical literature is dedicated to denoting the impact of individual personality characteristics on managing the dual-career lifestyle. It would behoove family scholars to be aware of these two unique aspects of the study

The Effects of Depressive Symptomology on Women’s Childbearing Considerations

Empirical literature dedicated to pursuing knowledge of the relationship between women who suffer from depression and their considerations of childbearing is lacking. Therefore, the primary purpose of this study was to determine the types of relationships that exist between depressive symptomology in women and their childbearing considerations. Secondary data analysis was the chosen form of research analysis, and the National Survey of Families and Households (Wave 1) was the data set employed. There were a total of four independent variables (depressive symptomology, global life satisfaction, global optimism, and self-esteem) and two dependent variables (10 constraint items and 4 motivational factor items) used to determine the relationships, with hierarchical regression analysis being the chosen analysis procedure. Results from the analysis revealed that there was a positive relationship between a woman’s level of depressive symptomology and several of the constraint and motivational factor items, namely, economic well-being, relationship issues, and the stress associated with caring for a child. Additionally, the self-esteem items were found to be negatively correlated with some items, but positively correlated with others. The items were most often negatively correlated with motivational factors (i.e., having someone to love, needing something to do, giving my parents grandchildren, and having someone to care for me when I am old), and most often positively correlated with constraints regarding issues of time (e.g., worry that I will have time for my career). Finally, both the global optimism and global life satisfaction variables were dropped from the analysis because they proved to be poor measures. The findings of the study provide evidence that women who suffer from depression do appear to consider certain constraints and motivational factors when making decisions about their future status as mothers. The study concluded with recommendations for theory, future research, and family life education practice, as well as a description of limitations of the project

Nanoscale Investigations of Thermal and Momentum Transport in Graphene – Water Systems

Demand for miniaturized electronic devices has given rise to new challenges in thermal management. Integration with graphene, a two-dimensional (2D) material with excellent thermal properties, allows for further reduced sizes and combats thermal management issues within novel devices. Moreover, due to its wide availability and adequate thermal properties, liquid water is commonly used within traditional thermal systems to enhance cooling performance; as such, water is expected to yield similar performance in smaller-scale applications. However, at reduced sizes descending to the nanoscale realm, system behaviors deviate from traditional macroscale-based theory as interfacial effects become amplified. Employing insight provided by molecular dynamics simulations, this thesis investigates momentum and thermal transport characteristics, stemming from interfacial interactions, of graphene/water systems to unravel their nanoscale contributions on system-wide thermal performance. The convective heat transfer process for a laminar flow of liquid water in graphene nanochannels is emphasized as a joint assessment of momentum and thermal transport, with understandings obtained from initial investigations. In preliminary momentum transport analysis, wettability assessments identified graphene/water system behavior as highly dependent on interfacial surface interactions. Extension to flow simulations further revealed that surface interactions significantly impact momentum transport of flowing water behavior and slip development; attributing to the anatomically smooth nature of 2D graphene, slip flow is observed even in cases of extreme hydrophilicity. In thermal transport assessments, increasing surface interactions are shown to enhance heat transfer due to decreased interfacial thermal resistance. In convection heat transfer analysis, momentum and thermal transport are found to be strongly correlated; however, thermal transport was determined to be more influential on resultant system characteristics than momentum transport. Additionally, system size dependence on momentum and thermal transport is observed, with convective performance suggested as the ratio of thermal slip length to system size. Findings presented in this thesis are expected to enhance knowledge of the physics behind solid/liquid interfacial phenomena and establish more accurate descriptions of nanoscale momentum and thermal transport. Although constrained by limited dimensional/time scales, this work is anticipated to aid in laying the ground work for understanding nanoscale thermal characteristics, with aim at developing novel thermal systems

1951, August 8, Letter from Mary Hays Marable to Miss Vern Hutchison

This letter was written to thank Miss Hutchison for her kind words in her previous letter. Marable wishes she could claim the credit for the report that was made, but the report credits go to Mr. Hudson

THE ROLE OF THE PLACENTA-BRAIN AXIS IN CHILDREN'S NEURODEVELOPMENT: AN INTERDISCIPLINARY APPROACH TO UNDERSTANDING PLACENTAL ORIGINS OF BRAIN DEVELOPMENT INTO ADOLESCENCE

Neurodevelopmental dysfunction and neurologic disorders may have placental origins. During pregnancy, exposure to in utero stressors alters placental growth and formation resulting in fetal malprogramming. This disruption of placenta and fetal growth is associated with increased risk of neurodevelopmental dysfunction and neurologic disorders. Children born prematurely (<37 weeks of gestation) are at increased risk for neurodevelopmental disorders. This dissertation focuses on neurodevelopmental disability among children who are born extremely preterm (< 28 weeks of gestation). Included research leverages the unique extremely low gestational age newborns (ELGAN) cohort. Using transdisciplinary scientific approaches, I investigated the complex relationships that exist among the placenta, the neonatal brain, and the maturing brain into the critical adolescent phase of those born extremely prematurely. My research provided a novel assessment of the transcriptomic architecture of the placenta in relation to ELGAN brain development. First, I examined the association between placenta mRNA expression and abnormalities in the cerebral white matter during the neonatal period. Next, findings were followed with additional studies of the relationship between the expression of inflammation and immune response-related placental transcripts as they related to adolescent regional brain volumes and neurodevelopmental disability at age 15. Lastly, I investigated the relationship between neonatal inflammatory markers and brain volume in ELGAN adolescence. Hence, findings from these studies provide novel molecular insight into how physiological changes in the placenta are associated with structural or cognitive neurodevelopment. The research is unique in its longitudinal focus on brain development spanning the neonatal to adolescent periods of life. The results of my work demonstrate that inflammation in the placenta is tied to brain structure in the neonate, neurodevelopmental disability, and brain volume later in life. Taken together this work supports that children born extremely preterm with dysregulated placental transcriptomic expression represent a population of individuals particularly susceptible to cerebral white matter damage, reduced brain volumes, or cognitive deficits.Doctor of Philosoph