Influencing a physically active lifestyle through instructional practices in university basic instruction courses

University graduation requirements for physical education courses termed Basic Instruction Courses (BIC) are at an all-time low. This is contradictory to university research support for the importance of lifetime physical activity (PA). BICs should be examined to identify best instructional practices to influence future PA. The purpose of this study was to examine instructional best practices BIC instructors used to increase students' intentions for future PA. Four Future Practice categories were generated from a pilot study (Social interactions, community, enjoyment, persuasion/role modeling). This study examined the use of these practices in a beginner level soccer course. A beginning volleyball BIC, in which students did not receive the Future Practices program, served as a comparison condition. Data sources for this research were The Physical Activity Intention Adherence Questionnaire (PAIAQ), the Basic Instruction Course Self-Survey (BICSS), student interviews, lesson observations, and instructor journals and checklists. The PAIAQ and BICSS were analyzed descriptively, while the qualitative data was analyzed using open and axial coding to identify themes across data sources. Results displayed no statistically significant changes between classes from pre-tests (Wilks λ=.85, F=1.58, p=.20 with equal variance assumed: Box's M=9.50, p=59). However, the BICs showed more significant change in the PAIAQ and relatedness measures. The Future Practice categories' effectiveness was described from qualitative analysis. The themes of gameplay, health/fitness, and feeling comfortable emerged as characteristics of instruction that led to students' future PA intentions. The most influential instructional Future Practices were the Social Interaction and Outside Class Involvement practices as they catered to student comfort in future PA. The instructor's expertise in sequencing instructional tasks to develop students' sport skills and confidence also appeared to influence students' future PA intentions. Based on the findings of this research, instructional practices addressing game situations, health benefits, and community resources appear to be influential in university students' future exercise intentions

Forward modeling of collective Thomson scattering for Wendelstein 7-X plasmas: Electrostatic approximation

In this paper, we present a method for numerical computation of collective Thomson scattering (CTS). We developed a forward model, eCTS, in the electrostatic approximation and benchmarked it against a full electromagnetic model. Differences between the electrostatic and the electromagnetic models are discussed. The sensitivity of the results to the ion temperature and the plasma composition is demonstrated. We integrated the model into the Bayesian data analysis framework Minerva and used it for the analysis of noisy synthetic data sets produced by a full electromagnetic model. It is shown that eCTS can be used for the inference of the bulk ion temperature. The model has been used to infer the bulk ion temperature from the first CTS measurements on Wendelstein 7-X

Towards a new image processing system at Wendelstein 7-X: From spatial calibration to characterization of thermal events

Wendelstein 7-X (W7-X) is the most advanced fusion experiment in the stellarator line and is aimed at proving that the stellarator concept is suitable for a fusion reactor. One of the most important issues for fusion reactors is the monitoring of plasma facing components when exposed to very high heat loads, through the use of visible and infrared (IR) cameras. In this paper, a new image processing system for the analysis of the strike lines on the inboard limiters from the first W7-X experimental campaign is presented. This system builds a model of the IR cameras through the use of spatial calibration techniques, helping to characterize the strike lines by using the information given by real spatial coordinates of each pixel. The characterization of the strike lines is made in terms of position, size, and shape, after projecting the camera image in a 2D grid which tries to preserve the curvilinear surface distances between points. The description of the strike-line shape is made by means of the Fourier Descriptors

EUROTRAC. Teilprojekt: TRACT. Ausbreitung von Spurengasen ueber orographisch strukturiertem Gelaende Abschlussbericht

Special field measurements of air pollutants during the international TRACT campaign (Transport of Air Pollutants over Complex Terrain) in September 1992 were performed in the so-called Nested Area. The experimental activities covered - the quality control (Quality Assurance) of all trace-gas monitors operating in the Nested Area of all participating institutions, - the study of the transport of air pollutants (Ozon, CO, SO_2) along a traverse of temporary measuring stations from the Upper Rhine Valley to the summit of the Black Forest. The mean ozone concentration at the summit is 2.5 times the one in the Rhine Valley, -the measurements of the diurnal variations of the vertical ozone profiles and meteorological variables up to 1000 m altitude. From the vertical ozone profiles reliable estimates of the height of the nocturnal inversion layers can be made. Within the nocturnal inversion layer in the Upper Rhine Valley ozone is rapidly depleted in the evening hours by dry deposition to the ground and by chemical reactions with NO, - comparative measurements of the vertical turbulent ozone flux from which a mean diurnal maximum value of the dry deposition velocity on gras of 0.33 cm s"-"1 was calculated. (orig.)Available from TIB Hannover: F95B2535+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman

Shedding Light on the D1-Like Receptors: A Fluorescence-Based Toolbox for Visualization of the D1 and D5 Receptors

Dopamine D1-like receptors are the most abundant type of dopamine receptors in the central nervous system and, even after decades of discovery, still highly interesting for the study of neurological diseases. We herein describe the synthesis of a new set of fluorescent ligands, structurally derived from D1R antagonist SCH-23390 and labeled with two different fluorescent dyes, as tool compounds for the visualization of D1-like receptors. Pharmacological characterization in radioligand binding studies identified UR-NR435 (25) as a high-affinity ligand for D1-like receptors (pKi (D1R) = 8.34, pKi (D5R) = 7.62) with excellent selectivity towards D2-like receptors. Compound 25 proved to be a neutral antagonist at the D1R and D5R in a Gs heterotrimer dissociation assay, an important feature to avoid receptor internalization and degradation when working with whole cells. The neutral antagonist 25 displayed rapid association and complete dissociation to the D1R in kinetic binding studies using confocal microscopy verifying its applicability for fluorescence microscopy. Moreover, molecular brightness studies determined a single-digit nanomolar binding affinity of the ligand, which was in good agreement with radioligand binding data. For this reason, this fluorescent ligand is a useful tool for a sophisticated characterization of native D1 receptors in a variety of experimental setups

Intégrer l'agriculture au GATT. Réformer les quotas tarifaires dans l'accord sur l'agriculture de l'Organisation mondiale du commerce

UMR Inra-AgroParisTech Economie publique Cote PUBLI 2001 13Cet ouvrage, sur commande de l'International agricultural trade research consortium, examine les échanges agricoles internationaux sous régime de quotas tarifaires. Ces quotas ont été rendus nécessaires pour répondre aux engagements d'accès minimum et d'accès courants de l'accord du Cycle de l'Uruguay. Leur effet sur les échanges est cependant mal connu et ils sont assez peu transparents. Cet ouvrage décrit ces quotas, leurs régimes d'administration et les obstacles qu'ils soulèvent dans les négociations commerciales internationales

Intégrer l'agriculture au GATT. Réformer les quotas tarifaires dans l'accord sur l'agriculture de l'Organisation mondiale du commerce

UMR Inra-AgroParisTech Economie publique Cote PUBLI 2001 13Cet ouvrage, sur commande de l'International agricultural trade research consortium, examine les échanges agricoles internationaux sous régime de quotas tarifaires. Ces quotas ont été rendus nécessaires pour répondre aux engagements d'accès minimum et d'accès courants de l'accord du Cycle de l'Uruguay. Leur effet sur les échanges est cependant mal connu et ils sont assez peu transparents. Cet ouvrage décrit ces quotas, leurs régimes d'administration et les obstacles qu'ils soulèvent dans les négociations commerciales internationales

Flight Characteristics of Iced Aircraft

An evaluation of the effects of airframe icing on flight characteristics of fixed-wing aircraft is presented. The analysis is based on high-quality simulation models for different aircraft with distinct wing ice configurations (leading-edge and run-back ice), which are validated with flight test data and CFD results. A comparison of the distinct aerodynamic degradations leads to a general assessment of the icing influences. The icing-induced changes of the flight performance characteristics are revealed due to the interpretation of several parameters like thrust-to-weight ratio, specific excess power or lift-to-drag ratio for each ice configuration and aircraft. The change of aircraft eigenmodes is investigated by analyzing the system matrix of the linearized models at a specific trim point. Furthermore, ice-induced changes of the handling qualities are evaluated using numerical criteria of "MIL-STD-1797 A"