210 research outputs found
Personal Growth, Habits and Understanding: Pleasure Reading Among First-Year University Students
<b>Objectives</b> – This study examines the reading habits and experiences of first-year undergraduate students at Dalhousie University and the University of King’s College in Halifax, Nova Scotia, Canada.<br><b>Methods</b> – First-year undergraduate university students (aged 18 to 20) were recruited to take part in focus group discussions and responses were analysed to examine the following topics: (1) the role of reading in their lives, both academic and personal; (2) the development of reading habits from childhood; (3) reading engagement strategies; and (4) selection strategies.<br><b>Results</b> – This study suggests that reading for pleasure is a well-established habit amongst many first-year undergraduate students. First-year undergraduates primarily read for pleasure in order to relax but also recognize that pleasure reading can play a positive role in their academic performance, enhancing their range of background knowledge as well as their active vocabulary.<br><b>Conclusions</b> – The conclusions of this research provide recommendations for librarians and university administration to engage students and increase rates of retention in postsecondary institutions. In particular, recommendations related to the importance of pleasure reading collections, campus reading programs, book clubs, readers’ advisory services and quiet and comfortable reading areas in academic libraries are provided
CFD Computations for a Generic High-Lift Configuration Using TetrUSS
Assessment of the accuracy of computational results for a generic high-lift trapezoidal wing with a single slotted flap and slat is presented. The paper is closely aligned with the focus of the 1st AIAA CFD High Lift Prediction Workshop (HiLiftPW-1) which was to assess the accuracy of CFD methods for multi-element high-lift configurations. The unstructured grid Reynolds-Averaged Navier-Stokes solver TetrUSS/USM3D is used for the computational results. USM3D results are obtained assuming fully turbulent flow using the Spalart-Allmaras (SA) and Shear Stress Transport (SST) turbulence models. Computed solutions have been obtained at seven different angles-of-attack ranging from 6 -37 . Three grids providing progressively higher grid resolution are used to quantify the effect of grid resolution on the lift, drag, pitching moment, surface pressure and stall angle. SA results, as compared to SST results, exhibit better agreement with the measured data. However, both turbulence models under-predict upper surface pressures near the wing tip region
An Overview of Ares-I CFD Ascent Aerodynamic Data Development And Analysis Based on USM3D
An overview of the computational results obtained from the NASA Langley developed unstructured grid, Reynolds-averaged Navier-Stokes flow solver USM3D, in support of the Ares-I project within the NASA s Constellation program, are presented. The numerical data are obtained for representative flow conditions pertinent to the ascent phase of the trajectory at both wind tunnel and flight Reynolds number without including any propulsion effects. The USM3D flow solver has been designated to have the primary role within the Ares-I project in developing the computational aerodynamic data for the vehicle while other flow solvers, namely OVERFLOW and FUN3D, have supporting roles to provide complementary results for fewer cases as part of the verification process to ensure code-to-code solution consistency. Similarly, as part of the solution validation efforts, the predicted numerical results are correlated with the aerodynamic wind tunnel data that have been generated within the project in the past few years. Sample aerodynamic results and the processes established for the computational solution/data development for the evolving Ares-I design cycles are presented
Contributions of TetrUSS to Project Orion
The NASA Constellation program has relied heavily on Computational Fluid Dynamics simulations for generating aerodynamic databases and design loads. The Orion Project focuses on the Orion Crew Module and the Orion Launch Abort Vehicle. NASA TetrUSS codes (GridTool/VGRID/USM3D) have been applied in a supporting role to the Crew Exploration Vehicle Aerosciences Project for investigating various aerodynamic sensitivities and supplementing the aerodynamic database. This paper provides an overview of the contributions from the TetrUSS team to the Project Orion Crew Module and Launch Abort Vehicle aerodynamics, along with selected examples to highlight the challenges encountered along the way. A brief description of geometries and tasks will be discussed followed by a description of the flow solution process that produced production level computational solutions. Four tasks conducted by the USM3D team will be discussed to show how USM3D provided aerodynamic data for inclusion in the Orion aero-database, contributed data for the build-up of aerodynamic uncertainties for the aero-database, and provided insight into the flow features about the Crew Module and the Launch Abort Vehicle
Sonic Boom Computations for a Mach 1.6 Cruise Low Boom Configuration and Comparisons with Wind Tunnel Data
Accurate analysis of sonic boom pressure signatures using computational fluid dynamics techniques remains quite challenging. Although CFD shows accurate predictions of flow around complex configurations, generating grids that can resolve the sonic boom signature far away from the body is a challenge. The test case chosen for this study corresponds to an experimental wind-tunnel test that was conducted to measure the sonic boom pressure signature of a low boom configuration designed by Gulfstream Aerospace Corporation. Two widely used NASA codes, USM3D and AERO, are examined for their ability to accurately capture sonic boom signature. Numerical simulations are conducted for a free-stream Mach number of 1.6, angle of attack of 0.3 and Reynolds number of 3.85x10(exp 6) based on model reference length. Flow around the low boom configuration in free air and inside the Langley Unitary plan wind tunnel are computed. Results from the numerical simulations are compared with wind tunnel data. The effects of viscous and turbulence modeling along with tunnel walls on the computed sonic boom signature are presented and discussed
Toward Verification of USM3D Extensions for Mixed Element Grids
The unstructured tetrahedral grid cell-centered finite volume flow solver USM3D has been recently extended to handle mixed element grids composed of hexahedral, prismatic, pyramidal, and tetrahedral cells. Presently, two turbulence models, namely, baseline Spalart-Allmaras (SA) and Menter Shear Stress Transport (SST), support mixed element grids. This paper provides an overview of the various numerical discretization options available in the newly enhanced USM3D. Using the SA model, the flow solver extensions are verified on three two-dimensional test cases available on the Turbulence Modeling Resource website at the NASA Langley Research Center. The test cases are zero pressure gradient flat plate, planar shear, and bump-inchannel. The effect of cell topologies on the flow solution is also investigated using the planar shear case. Finally, the assessment of various cell and face gradient options is performed on the zero pressure gradient flat plate case
Google Book Search and the Future of Libraries
<span style="font-family: Helvetica;"><p align="left">Google Book Search (GBS) is a service provided by Google that allows for the searching of the full text of millions of books from some of the world&rsquo;s most renowned library collections. Two distinct view points are found amongst Information Management (IM) professionals regarding GBS: those who support the Google Books&rsquo; Search project as an opportunity for libraries and alternately, those who believe GBS will ultimately lead to the demise of libraries and the way individuals retrieve and process information. Information professionals objectively weigh the pros and cons of the GBS Project: being aware of the privacy concerns of the project, the problematic metadata of the search engine and the problematic dependency which it may cause. Contrarily, the pleasing of patrons in libraries, and digitization happening through the project must not be overlooked. Library professionals must determine the best method of bringing GBS into library environments, and this can be done effectively by considering context, concerns and benefits.</p></span>
A-Z List Migration: Employing Collaborative Project Management at the University of Guelph McLaughlin Library
From 2003 – 2016, the University of Guelph McLaughlin Library maintained a custom ColdFusion database of databases. Motivated by a myriad of issues, a project working group set the goal of decommissioning the ColdFusion A-Z list and migrating to SpringShare LibGuides platform A-Z list feature. This article focuses on our A-Z list migration, highlighting the collaborative approach we took to curating our list of journal databases and operationalizing and distributing this shared task across several teams within our library. This article describes our project and approach, lessons learned, recommendations and best practices, as well as future directions
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