Results of post-test psychological examinations of the crewmen from the 90-day manned test of an advanced regenerative life support system

The following material presents the results of two temporally remote administrations of an identical projective personality assessment device (Rorschach Inkblot) using crew members aboard the 90-day test. The first administration took place during preselection crew psychodiagnostic testing in the period extending from mid-December 1969 through mid-January 1970. Second administration took place in late May and early June, 1971, approximately one year after termination of the test. During the 90-day program duration, the subjects participated in the crew training program, were selected and served as onboard crew during the 90-day test. The testing was undertaken in order to determine the character and extent of change (if any) in basic personality dynamics accompanying or caused by participation in the 90-day test program. Results indicate that significant personality changes occurred in three of the four onboard crew members. A detailed discussion of the results is provided. Objective scores which served as the basis for the discussion are presented in the Appendix

Lie algebra and invariant tensor technology for g2

Proceeding in analogy with su(n) work on lambda matrices and f- and d-tensors, this paper develops the technology of the Lie algebra g2, its seven dimensional defining representation gamma and the full set of invariant tensors that arise in relation thereto. A comprehensive listing of identities involving these tensors is given. This includes identities that depend on use of characteristic equations, especially for gamma, and a good body of results involving the quadratic, sextic and (the non-primitivity of) other Casimir operators of g2.Comment: 29 pages, LaTe

Gut motility and its control

The gastrointestinal tract is composed of smooth muscle arranged in two layers: longitudinal and circular. Although its activity is influenced by the autonomic nervous system, it is mainly under local reflex control mediated by an enteric nervous system and local hormones. The motility of the gastrointestinal tract has several different well-defined patterns. Its function is to move the gastrointestinal contents through the various phases of homogenization (mixing), digestion, absorption and elimination

Digestion and absorption

Carbohydrates are digested by salivary and pancreatic amylases to di-, tri- and oligosaccharides, and then to monosaccharides by enzymes on the wall of the small intestine to allow them to be absorbed. Proteins are absorbed as amino acids and small peptides that are broken down to amino acids within the cells. Monosaccharides and amino acids pass into the liver via the portal vein. Fats are digested and absorbed as free fatty acids and glycerides that are then mostly reconstituted as triglycerides in the mucosal cells of the small intestine. They combine with phospholipids and a protein to form chylomicrons, which pass via the lymphatics and the thoracic duct into the systemic circulation. Fatty acids are re-esterified and stored as triglycerides in adipose tissue or oxidized for energy. Water is passively absorbed due to the osmotic gradient that results mainly due to the active absorption of sodium ions

What Is Known About the Impact of Impairments on Information Seeking and Searching?

Information seeking and access are essential for users in all walks of life, from addressing personal needs such as finding flights to locating information needed to complete work tasks. Over the past decade or so, the general needs of people with impairments have increasingly been recognized as something to be addressed, an issue embedded both in international treaties and in state legislation. The same tendency can be found in research, where a growing number of user studies including people with impairments have been conducted. The purpose of these studies is typically to uncover potential barriers for access to information, especially in the context of inaccessible search user interfaces. This literature review provides an overview of research on the information seeking and searching of users with impairments. The aim is to provide an overview to both researchers and practitioners who work with any of the user groups identified. Some diagnoses are relatively well represented in the literature (for instance, visual impairment), but there is very little work in other areas (for instance, autism) and in some cases no work at all (for instance, aphasia). Gaps are identified in the research, and suggestions are made regarding areas where further research is needed

7-Li(p,n) Nuclear Data Library for Incident Proton Energies to 150 MeV

We describe evaluation methods that make use of experimental data, and nuclear model calculations, to develop an ENDF-formatted data library for the reaction p + Li7 for incident protons with energies up to 150 MeV. The important 7-Li(p,n_0) and 7-Li(p,n_1) reactions are evaluated from the experimental data, with their angular distributions represented using Lengendre polynomial expansions. The decay of the remaining reaction flux is estimated from GNASH nuclear model calculations. The evaluated ENDF-data are described in detail, and illustrated in numerous figures. We also illustrate the use of these data in a representative application by a radiation transport simulation with the code MCNPX.Comment: 11 pages, 8 figures, LaTeX, submitted to Proc. 2000 ANS/ENS International Meeting, Nuclear Applications of Accelerator Technology (AccApp00), November 12-16, Washington, DC, US

On characteristic equations, trace identities and Casimir operators of simple Lie algebras

Two approaches are developed to exploit, for simple complex or compact real Lie algebras g, the information that stems from the characteristic equations of representation matrices and Casimir operators. These approaches are selected so as to be viable not only for `small' Lie algebras and suitable for treatment by computer algebra. A very large body of new results emerges in the forms, a) of identities of a tensorial nature, involving structure constants etc. of g, b) of trace identities for powers of matrices of the adjoint and defining representations of g, c) of expressions of non-primitive Casimir operators of g in terms of primitive ones. The methods are sufficiently tractable to allow not only explicit proof by hand of the non-primitive nature of the quartic Casimir of g2, f4, e6, but also e.g. of that of the tenth order Casimir of f4.Comment: 39 pages, 8 tables, late

Does dyslexia present barriers to information literacy in an online environment? A pilot studynformation Research

The skills and attributes required to become information literate have not been analysed from the perspective of information users with cognitive disabilities, such as dyslexia, and this research seeks to begin to address this gap in the literature. The initial objective of the research was to collect data showing the online search strategies of dyslexics and non-dyslexics who are in Higher Education, highlighting any areas of difference and difficulty. The results of a pilot study comparing the online search behaviour of seven dyslexic participants with that of seven who were non-dyslexic, are reported here. Participants were adult undergraduates, taken from all three levels of study. Participants were interviewed and their online information searching behaviour was observed through the collection of screen recording diaries over the completion period of one assignment. Within the dyslexic group, difficulties were reported and observed in the areas of keyword creation, use of appropriate tools to refine and expand searches and the evaluation of sources. The dyslexics' group low selfefficacy in many of the skills associated with information literacy was discovered to be notable barrier