On the K-theoretic fundamental classes of Deligne-Lusztig varieties

In this paper we express the class of the structure sheaves of the closures of Deligne--Lusztig varieties as explicit double Grothendieck polynomials in the first Chern classes of appropriate line bundles on the ambient flag variety. This is achieved by viewing such closures as degeneracy loci of morphisms of vector bundles.Comment: 8 pages, minor change

The Tennessee School Board Chairperson\u27s Perception of School Accountability

The purpose of this study was to obtain and analyze information about the perceptions of local school board chairpersons in Tennessee toward school accountability. A questionnaire was designed to gather information from all school board chairpersons in the state of Tennessee. The questionnaire contained 32 attitudinal statements related to school accountability and 11 demographic questions about the chairpersons and the system they represent. The mean score, frequency, and percentage of the responses were computed and analyzed. The Kruskal-Wallis one-was ANOVA was computed to determine if significant differences existed in the mean score of the 32 attitudinal statements based on the 9 demographics which contained more than two subgroups. When only two subgroups were available in the demographics, or the Kruskal-Wallis identified that a significant difference did exist among the subgroups, the Mann-Whitney U - Wilcoxon Rank Sum W Test were computed. The Mann-Whitney U Test identified the differences and pinpointed the subgroups that did have significant differences. Findings derived from school board chairpersons\u27 responses to the questionnaire: (1) Parents are responsible (99.1%) for getting children to attend school. (2) Schools should be equally funded (98.2%) before a school accountability program is implemented. (3) More research on value-added testing needs to be completed before teachers and principals are held accountable by test results. (4) Programs to improve attendance (86.7%) and graduation rates (85.7%) need to be implemented for all school systems. (5) School board chairpersons need more education concerning site-based management and how it relates to accountability

Magnetic trapping of buffer-gas cooled chromium atoms and prospects for the extension to paramagnetic molecules

We report the successful buffer-gas cooling and magnetic trapping of chromium atoms with densities exceeding $10^{12}$ atoms per cm$^{3}$ at a temperature of 350 mK for the trapped sample. The possibilities to extend the method to buffer-gas cool and magnetically trap molecules are discussed. To minimize the most important loss mechanism in magnetic trapping, molecules with a small spin-spin interaction and a large rotational constant are preferred. Both the CrH ($^6\Sigma^+$ ground state) and MnH ($^7\Sigma^+$) radicals appear to be suitable systems for future experiments.Comment: 9 pages, 4 Figure

The Occurrence of Trihalomethane Compounds in Salt Lake City and Ogden, Utah, Drinking Water Supplies

A purge and trap, gas chromatography system was developed to analyze for trihalomethane (THMs) compounds at the ppb (parts per billion) level in drinking water. Monthly influent and effluent samples were taken from three Weber Basin Water Conservancy Distrcit treatment plants, three Salt Lake City water treatmetn platns, and one Slat Lake Metropolitan water treatment plant. In addition tap water samples were taken at various business and residential locations in Salt Lake City, Utah, and Ogen, Utah. All samples were analyzed for trihalomethanes and total organic carbon (TOC). In addition to monthly sampling, a comparison of the production of THMs during post and prechlorination of water at the Parleys Water Treatment Plant in Salt Lake City was conducted. moving th epoint of chlorination within the treatment plant did not appear to reudce trihalomethane levels in the finished product. Highest trihalomethane levels (84 ug/1) occurred in the summer months with the lowest levels (\u3c1 ug/1) recorded in the winter. The chemical form of the THMs varied from chloroform to the more brominated hydrocarbon from late winter through spring

Designing and Implementing a Qualitative Evaluation Protocol for Non-Credit Life Long Learning Programs 1

This study was undertaken to determine whether an evaluation model employing multiple methods of data collection and analysis might yield more useful information for improving lifelong learning courses than existing models. Major findings included: (1) learning satisfaction appears to be dependent on the instructional environment adults may be most comfortable with and; (2) the confidence gained in using computers, rather than skills acquisition, was the greatest benefit students derived from their participation. Findings from this study suggest the value of mixed methods evaluation designs for generating information that is useful for improving lifelong learning courses. Findings also suggest the need for much more research in this domain of inquiry

GPU Modeling of Ship Operations in Pack Ice

The paper explores the use of an event-mechanics approach to assess vessel performance in pack ice. The methodology is developed using massively parallel programming strategies on a GPU enabled workstation. A set of simulation domains, each containing hundreds of discrete and interacting ice floes is modeled. A simple vessel is modeled as it navigates through the domains. Each ship-ice collision is modeled, as is every ice-ice contact. Time histories of resistance, speed and position are presented along with the parametric sensitivities. The results are compared to published data from analytical, numerical and scale model tests. The work is part of a large research project at Memorial University called STePS2 (Sustainable Technology for Polar Ships and Structures)

Haut und Psychosomatik – Psychodermatologie heute

ZusammenfassungDie heutige Psychodermatologie beruht auf dem biopsychosozialen Krankheitsmodell der Psychosomatik. Danach sind biologische, psychologische und soziale Faktoren auf verschiedenen Ebenen (von den Molekülen bis zur Biosphäre) durch komplexe, nicht lineare Interaktionen über den gesamten Krankheitsverlauf wesentlich an der Pathogenese jeder Krankheit beteiligt. Es gilt als experimentell gesichert, dass "Emotionen in die Haut gelangen". Die rezente Forschung belegt enge anatomische, physiologische und funktionelle Verbindungen zwischen Haut und Nervensystem; letztere sind ontogenetisch eng verwandt. Diese Verbindungen spiegeln sich in zahlreichen Hautkrankheiten wider, bei denen psychische und somatische ätiologische Faktoren eng miteinander verflochten sind. Dieser Verflechtung sollte ein ganzheitlicher Zugang des Arztes gerecht werden.Bei Anamneseerhebung, Diagnosestellung und Therapiewahl sollten biologische, psychische und soziale Faktoren hinreichend berücksichtigt werden. Die "Sichtbarkeit" des Hautorgans führt dazu, dass die Dermatologie unter den klinischen Fächern eine Sonderstellung einnimmt und dass ein ganzheitlicher psychosomatischer Zugang zum Patienten besonders wichtig ist. Die Lebenslaufperspektive (life course approach) kann zu den Zugangsmethoden der modernen Psychodermatologie gerechnet werden. In Anlehnung an das moderne Konzept der Psychodermatologie gibt es heute weitere entsprechende Teilgebiete wie zum Beispiel Psychogastroenterologie und Psychokardiologie. Im Anschluss an den theoretischen Teil werden einige exemplarisch ausgewählte Hautkrankheiten unter dem psychosomatischen Blickpunkt ausführlicher besprochen

Righteous Among the Nations: Honoring Spiritual Resistance in a Time of Pandemics

Telling the stories of people who risked their lives to save victims of the Holocaust through music is the focus of a project called The Garden of the Righteous. This project was introduced in a recent article in the Interdisciplinary Journal of Partnership Studies, called “Righteous Among the Nations: Music Without Borders” (Eisner et al., 2019). This piece provides an update on the evolution of the project during a time of pandemics

Fluid Phase Separation (FPS) experiment for flight on a space shuttle Get Away Special (GAS) canister

The separation of fluid phases in microgravity environments is of importance to environmental control and life support systems (ECLSS) and materials processing in space. A successful fluid phase separation experiment will demonstrate a proof of concept for the separation technique and add to the knowledge base of material behavior. The phase separation experiment will contain a premixed fluid which will be exposed to a microgravity environment. After the phase separation of the compound has occurred, small samples of each of the species will be taken for analysis on the Earth. By correlating the time of separation and the temperature history of the fluid, it will be possible to characterize the process. The experiment has been integrated into space available on a manifested Get Away Special (GAS) experiment, CONCAP 2, part of the Consortium for Materials Complex Autonomous Payload (CAP) Program, scheduled for STS-42. The design and the production of a fluid phase separation experiment for rapid implementation at low cost is presented