Rider University

About: Rider University is a education organization based out in Lawrenceville, New Jersey, United States. It is known for research contribution in the topics: Dosimetry & Creativity. The organization has 881 authors who have published 1934 publications receiving 50752 citations.

Reinventing from Within: Thinking Spherically as a Policy Imperative in Music Education

Abstract: If policy is the most significant gatekeeping element for access to and development of community goods and services, and if music educators have historically lived at the margins of policy, then who procures access for the field? How are visions for musical and educational development articulated and what are the resulting implications? This article suggests sphericity as a metaphorical point of entry in discussing the need for the music education field to consider policy and policy studies differently. The article argues for connections between policy and teacher education, contending that the practice of contesting and creating representations of knowledge structures and learning based on deliberative skills is at the center of policy formation and development, as well as the center of teaching.

Peritoneal macrophages suppress T-cell activation by amino acid catabolism.

Abstract: T-lymphocyte activation triggered by anti-CD3, endogenous or exogenous superantigen, and mitogens was suppressed in a cell-dose-dependent fashion by peritoneal cavity (PerC) leucocytes. Study of lymphocyte-deficient mice and the use of multiparameter fluorescence-activated cell sorter analyses revealed that macrophages were responsible for this form of immune regulation. Interferon-γ was essential to trigger suppression, which, by enzyme inhibition studies, was shown to be the result of tryptophan and arginine catabolism. These results illustrate that macrophages, which are classically defined by their innate effector function as antigen-presenting cells, have the potential to temper adaptive immunity.

Exploratory Bifactor Analysis of the WJ-III Cognitive in Adulthood via the Schmid–Leiman Procedure

Abstract: The Woodcock–Johnson-III cognitive in the adult time period (age 20 to 90 plus) was analyzed using exploratory bifactor analysis via the Schmid–Leiman orthogonalization procedure. The results of this study suggested possible overfactoring, a different factor structure from that posited in the Technical Manual and a lack of invariance across both age ranges under study. Even when forcing the seven-factor fit, the structure was problematic. The results from the 20 to 39 age group displayed patterns of convergence with and divergence from the Technical Manual’s structure. The results from the 40 and above age group were generally consistent with the Technical Manual’s structure except for retrieval fluency. This study is consistent with the body of exploratory factor analysis structural validity evidence suggesting that contemporary tests of cognitive ability, particularly those based on Cattell–Horn–Carroll theory, are overfactored and lack alignment with their respective Technical Manual’s presented structure.

Fully Energy-Dependent HZETRN (A Galactic Cosmic-Ray Transport Code)

Abstract: For extended manned space missions, the radiation shielding design requires efficient and accurate cosmic-ray transport codes that can handle the physics processes in detail. The Langley Research Center galactic cosmic-ray transport code (HZETRN) is currently under development for such design use. The cross sections for the production of secondary nucleons in the existing HZETRN code are energy dependent only for nucleon collisions. The approximation of energy-independent, heavy-ion fragmentation cross section is now removed by implementing a mathematically simplified energy-dependent stepping formalism for heavy ions. The cross section at each computational grid is obtained by linear interpolation from a few tabulated data to minimize computing time. Test runs were made for galactic cosmic-ray transport through a liquid hydrogen shield and a water shield at solar minimum. The results show no appreciable change in total fluxes or computing time compared with energy-independent calculations. Differences in high LET (linear energy transfer) spectra are noted, however, because of the large variation in cross sections at low-energy region. The high LET components are significantly higher in the new code and have important implications on biological risk estimates for heavy-ion exposure.

HZEFRG1: An Energy-Dependent Semiempirical Nuclear Fragmentation Model

Abstract: Methods for calculating cross sections for the breakup of high-energy heavy ions by the combined nuclear and coulomb fields of the interacting nuclei are presented The nuclear breakup contributions are estimated with an abrasion-ablation model of heavy ion fragmentation that includes an energy-dependent, mean free path The electromagnetic dissociation contributions arising from the interacting coulomb fields are estimated by using Weizs-Williams theory extended to include electric dipole and electric quadrupole contributions The complete computer code that implements the model is included as an appendix Extensive comparisons of cross section predictions with available experimental data are made