Principal Leadership, Teacher Morale, and Student Achievement in Seven Schools in Mitchell County, North Carolina.

The purpose of this study was to understand and measure principal leadership practices and teacher morale as it relates to student achievement in Mitchell County at two elementary schools, four middle schools, and one high school. First, a review of the related literature attempted to define teacher morale as much as possible given that it is an ever-changing individual characteristic. Second, the researcher tried to understand teacher morale and distinguish between high and low elements and characteristics of teacher morale. Third, the researcher examined the difficult task of measuring the morale of teachers in public education today. Fourth, an attempt was made to understand what role school leaders play in the development of teacher morale and how their specific behavior affects the morale of teachers. Lastly, student achievement was reviewed using the North Carolina End-Of-Grade tests. All of these variables were examined to determine if there was a connection or pattern to high or low student achievement based on teacher morale. This quantitative study was conducted using a survey-design method. The Purdue Teacher Opinionaire was used to measure factors contributing to teacher morale. The Leadership Practices Inventory (LPI) was chosen to measure leadership practices that best supports great accomplishments in organizations. The North Carolina End-Of-Grade/End-Of-Course tests were used to measure student achievement. Overall results for Mitchell County Schools showed that there was a moderately high level of teacher morale. Satisfaction with teaching led the way in contributing to higher morale whereas the issue of teacher salary was found to lower morale. School leaders in Mitchell County proved to inspire a common vision as well as encourage teaching from the heart more so than found in existing research. Teachers from two of the seven schools rated their principals higher in leadership practices than the principals themselves; this is contrary to presented research. Many significant relationships existed between perceived leadership practices and teacher morale factors. All factors of teacher morale as measured by the Purdue Teacher Opinionaire had a positive correlation with the End-Of-Grade/End-Of-Course test scores

Über die Stickstoffbestimmung nach Kjeldahl im Kreatin.

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Attitudes to and experiences with body weight control and changes in body weight in relation to all-cause mortality in the general population

Background and aimsIncreased body mass index (BMI = weight/height2; kg/m2) and weight gain is associated with increased mortality, wherefore weight loss and avoided weight gain should be followed by lower mortality. This is achieved in clinical settings, but in the general population weight loss appears associated with increased mortality, possibly related to the struggles with body weight control (BWC). We investigated whether attitudes to and experiences with BWC in combination with recent changes in body weight influenced long-term mortality among normal weight and overweight individuals.Population and methodsThe study population included 6,740 individuals attending the 3rd cycle in 1991-94 of the Copenhagen City Heart Study, providing information on BMI, educational level, health behaviours, well-being, weight half-a-year earlier, and answers to four BWC questions about caring for body weight, assumed benefit of weight loss, current and past slimming experiences. Participants reporting previous unintended weight loss (> 4 kg during one year) were excluded. Cox regression models estimated the associations of prior changes in BMI and responses to the BWC questions with approximately 22 years all-cause mortality with age as 'time scale'. Participants with normal weight (BMI ResultsCompared with stable weight, weight loss was associated with significantly increased mortality in the normal weight group, but not in the overweight group, and weight gain was not significantly associated with mortality in either group. Participants with normal weight who claimed that it would be good for their health to lose weight or that they were currently trying to lose weight had significantly higher mortality than those denying it. There were no other significant associations with the responses to the BWC questions in either the normal weight or the overweight group. When combining the responses to the BWC questions with the weight changes, using the weight change as either a continuous or categorical variable, there were no significant interaction in their relation to mortality in either the normal weight or the overweight group.ConclusionAttitudes to and experiences with BWC did not notably modify the association of changes in body weight with mortality in either people with normal weight or people with overweight

Quantum beat spectroscopy of repulsive Bose polarons

The physics of impurities in a bosonic quantum environment is a paradigmatic and challenging many-body problem that remains to be understood in its full complexity. Here, this problem is investigated for impurities with strong repulsive interactions based on Ramsey interferometry in a quantum degenerate gas of 39K atoms. We observe an oscillatory signal that is consistent with a quantum beat between two co-existing coherent quasiparticle states: the attractive and repulsive polarons. The interferometric signal allows us to extract the polaron energies for a wide range of interaction strengths, complimenting earlier spectroscopic measurements. We furthermore identify several dynamical regimes towards the formation of the Bose polaron in good agreement with theory. Our results improve the understanding of quantum impurities interacting strongly with a bosonic environment, and demonstrate how quasiparticles as well as short-lived non-equilibrium many-body states can be probed using Ramsey interferometry

DCE Bio Detection System Final Report

The DCE (DNA Capture Element) Bio-Detection System (Biohound) was conceived, designed, built and tested by PNNL under a MIPR for the US Air Force under the technical direction of Dr. Johnathan Kiel and his team at Brooks City Base in San Antonio Texas. The project was directed toward building a measurement device to take advantage of a unique aptamer based assay developed by the Air Force for detecting biological agents. The assay uses narrow band quantum dots fluorophores, high efficiency fluorescence quenchers, magnetic micro-beads beads and selected aptamers to perform high specificity, high sensitivity detection of targeted biological materials in minutes. This final report summarizes and documents the final configuration of the system delivered to the Air Force in December 200