NASA participation in the AMST program

The objectives of the NASA Advanced Medium STOL Transport Experiments Program are discussed and several of the NASA experiments currently implemented and conducted on the YC-14 and YC-15 prototype aircraft are described. Emphasis is placed on experiments related to powered lift aerodynamics and acoustics

A World of Fields

Trope ontology is exposed and confronted with the question where one trope ends and another begins. It is argued that tropes do not have determinate boundaries, it is arbitrary how tropes are carved up. An ontology, which I call field ontology, is proposed which takes this into account. The material world consists of a certain number of fields, each of which is extended over all of space. It is shown how field ontology can also tackle the problem of determin-able properties and the problem of completeness of things

Search for Effect of Influence from Future in Large Hadron Collider

We propose an experiment which consists of drawing a card and using it to decide restrictions on the running of Large Hadron Collider (LHC for short) at CERN, such as luminosity, and beam energy. There may potentially occur total shut down. The purpose of such an experiment is to search for influence from the future, that is, backward causation. Since LHC will produce particles of a mathematically new type of fundamental scalars, i.e., the Higgs particles, there is potentially a chance to find unseen effects, such as on influence going from future to past, which we suggest in the present paper.Comment: 18pp, comments added, change of title and corrections of main text; v4:minor typos correcte

Predictors of Health Promoting Lifestyles in Baccalaureate Nursing Students

Background: Nurses comprise the largest segment of healthcare professionals. As nursing students become health professionals, they will have a significant role in modeling health promoting lifestyles and educating patients regarding healthy lifestyle choices. Purpose: The purpose of this study was to determine the predictors of health promoting lifestyles in baccalaureate nursing students. Methods: A descriptive, cross-sectional design was used to determine associations between variables including gender, age, basic metabolic index (BMI), financial need, race, ethnicity, relationship status, living situation, general health status, self-reported depressive symptoms, social support, academic outcomes, self-efficacy, and heath promoting lifestyles. A convenience sample of participants from baccalaureate colleges in the mid-west completed a demographic questionnaire, the Beck Depression Inventory II, the Interpersonal Support Evaluation List-College Version, the General Self-Efficacy Scale, and the Health Promoting Lifestyle Profile, II to determine predictors of health promoting lifestyle. Results:\u3c Discussion: The paucity of research regarding health-promoting lifestyles of future nursing professionals is of particular interest given the national policy initiatives concerning healthcare reform. The predictive model that met criteria for goodness of fit and significance of parameters found direct and indirect relationships between the parameters and health promoting lifestyles. Of particular interest is the finding that self-efficacy is a mediating variable between social support and health promoting lifestyles in the baccalaureate nursing student population. This finding contributes new knowledge, identifying this significant relationship that is not demonstrated on Pender\u27s health promotion model. Knowledge regarding predictors of health promoting lifestyles for nursing students will facilitate future intervention studies that will target strategies of significance for baccalaureate nursing students

On the structure of the post-Newtonian expansion in general relativity

In the continuation of a preceding work, we derive a new expression for the metric in the near zone of an isolated matter system in post-Newtonian approximations of general relativity. The post-Newtonian metric, a solution of the field equations in harmonic coordinates, is formally valid up to any order, and is cast in the form of a particular solution of the wave equation, plus a specific homogeneous solution which ensures the asymptotic matching to the multipolar expansion of the gravitational field in the exterior of the system. The new form provides some insights on the structure of the post-Newtonian expansion in general relativity and the gravitational radiation reaction terms therein.Comment: 22 pages, to appear in Phys. Rev.