Attitudes of Brookings High School Students Toward Variant Media and Use of Library Resources

A study such as this is important in that a student with the desire to keep abreast of current events should have an equal opportunity to read the current periodicals. If the home is unable financially to provide this material, the schools should assume the role of provider. If all students have access to current materials and do not depend upon library periodicals; perhaps the amount of money being budgeted cannot be justified. The objectives of this study were to determine: 1. What media did the students of Brookings High School use for information gathering and/or opinion formulation concerning current issues? 2. How the use of different types of media varied according to selected socioeconomic and scholastic achievement factors? 3. What socioeconomic and scholastic achievement factors helped explain variant use of the school library as a resource to aid in better understanding current issues. For the purposes of this study literature published from 1960 to the present and related to the selection and use of media by high school students was reviewed. The year 1960 was chosen as the earliest date because before 1960 television was not a major media resources in South Dakota. This section of the study reports such literature and summarizes pertinent generalizations derived from the review

Transport in Almost Integrable Models: Perturbed Heisenberg Chains

The heat conductivity kappa(T) of integrable models, like the one-dimensional spin-1/2 nearest-neighbor Heisenberg model, is infinite even at finite temperatures as a consequence of the conservation laws associated with integrability. Small perturbations lead to finite but large transport coefficients which we calculate perturbatively using exact diagonalization and moment expansions. We show that there are two different classes of perturbations. While an interchain coupling of strength J_perp leads to kappa(T) propto 1/J_perp^2 as expected from simple golden-rule arguments, we obtain a much larger kappa(T) propto 1/J'^4 for a weak next-nearest neighbor interaction J'. This can be explained by a new approximate conservation law of the J-J' Heisenberg chain.Comment: 4 pages, several minor modifications, title change

Mental health in higher education students and non-students: evidence from a nationally representative panel study

Despite increasing policy focus on mental health provision for higher education students, it is unclear whether they have worse mental health outcomes than their non-student peers. In a nationally-representative UK study spanning 2010-2019 (N = 11,519), 17-24 year olds who attended higher education had lower average psychological distress (GHQ score difference =  - 0.37, 95% CI - 0.60, - 0.08) and lower odds of case-level distress than those who did not (OR = 0.91, 95% CI 0.81, 1.02). Increases in distress between 2010 and 2019 were similar in both groups. Accessible mental health support outside higher education settings is necessary to prevent further widening of socioeconomic inequalities in mental health

Multiscale computational fluid dynamics

This is the final version. Available on open access from MDPI via the DOI in this recordComputational Fluid Dynamics (CFD) has numerous applications in the field of energy research, in modelling the basic physics of combustion, multiphase flow and heat transfer; and in the simulation of mechanical devices such as turbines, wind wave and tidal devices, and other devices for energy generation. With the constant increase in available computing power, the fidelity and accuracy of CFD simulations have constantly improved, and the technique is now an integral part of research and development. In the past few years, the development of multiscale methods has emerged as a topic of intensive research. The variable scales may be associated with scales of turbulence, or other physical processes which operate across a range of different scales, and often lead to spatial and temporal scales crossing the boundaries of continuum and molecular mechanics. In this paper, we present a short review of multiscale CFD frameworks with potential applications to energy problems

The use of CFD coupled with physical testing to develop a new range of vortex flow controls with attributes approaching the ideal flow control device

This is the author accepted manuscript. The final version is available from the publisher via the DOI in this record.Vortex flow controls (VFC) are devices which are well suited for use in drainage systems, as they exhibit non-constant, non-linear discharge coefficients that can be tailored to approach that of a constant flow-rate device. Also, they have no mechanical components or power requirements and have a reduced risk of blockage compared with traditional flow controls. However, due to their complex bi-stable discharge behaviour and the influences of turbulence, the design and scaling of these devices, is not a trivial process. In this paper a VFC design methodology is presented that enables the VFC geometry to be determined and optimized to approach the ideal hydraulic behaviour, for a given discharge limit. This is achieved through the calibration of simplified, axi-symmetric vortex solutions of the Navier-Stokes relationships, by means of Computational Fluid Dynamic (CFD) analysis and experimental hydraulic assessment. © 2011 ASCE