scholarly journals The Impact of Reducing Numerical Methods and Programming Courses on Undergraduate Performance

2020 ◽  
Author(s):  
Stephen Morse ◽  
Audra Morse ◽  
Venkatesh Uddameri ◽  
Elma Hernandez ◽  
David Ernst
Keyword(s):  
Numerical Methods ◽  
The Impact ◽  
Programming Courses ◽  
Undergraduate Performance

scholarly journals Helping to realize “computer science for all”: Student outcomes of self-pacing in introductory programming courses

2016 ◽  
Vol 8 ◽  
Author(s):  
Jaime Lester
Keyword(s):  
Computer Science ◽  
Self Report ◽  
Experimental Methodology ◽  
Classroom Observations ◽  
Control Group ◽  
Introductory Programming ◽  
Quasi Experimental ◽  
The Impact ◽  
Introductory Programming Courses ◽  
Programming Courses

Sparked by a series of national campaigns to increase interest in computer science, computer science departments are inundated with students who are interested in learning how to program. Despite the interest, introductory computer science course have relatively low completion rates (approximately 55% at Mason) and high rates of academic integrity violations. In response to this environment, the Computer Science department at Mason received an external grant to redesign their introductory programming courses to a self-paced, flipped format. Implementation began in Fall 2015 with a quasi-experimental methodology that tracks students from an experimental course and a control group (those who took more traditional introductory CS courses) over the course of the semester. Data collected includes grades on assignments, self-report surveys, and classroom observations.  The purpose of this study is to examine the impact of a self-paced, flipped curricular design in an introductory experiential computer science course on the immediate (in course) completion.   In this short lightning talk, we will present data from student surveys and classroom observations identifying any difference across the control and experimental groups. Preliminary results identify a significant increase in student completion upwards of a 20% difference across the groups. In addition to increasing knowledge of the impact of self-paced courses on student retention and success in computer science, we offer an alternative method to collect data on classroom observations via the Real-time Observation Classroom Application (ROCA). ROCA allows for efficient data collection and comparison of specific pedagogies to student engagement measures.  

Improved Two-Dimensional Dynamic Stall Prediction with Structured and Hybrid Numerical Methods

2011 ◽  
Vol 56 (4) ◽  
pp. 1-12 ◽  
Author(s):  
K. Richter ◽  
A. Le Pape ◽  
T. Knopp ◽  
M. Costes ◽  
V. Gleize ◽  
...  
Keyword(s):  
Numerical Methods ◽  
Numerical Method ◽  
High Speed ◽  
Turbulence Modeling ◽  
Turbulence Models ◽  
Boundary Layer Transition ◽  
Dynamic Stall ◽  
Two Dimensional ◽  
Layer Transition ◽  
The Impact

A joint comprehensive validation activity on the structured numerical method elsA and the hybrid numerical method TAU was conducted with respect to dynamic stall applications. To improve two-dimensional prediction, the influence of several factors on the dynamic stall prediction was investigated. The validation was performed for three deep dynamic stall test cases of the rotor blade airfoil OA209 against experimental data from two-dimensional pitching airfoil experiments, covering low-speed and high-speed conditions. The requirements for spatial discretization and for temporal resolution in elsA and TAU are shown. The impact of turbulence modeling is discussed for a variety of turbulence models ranging from one-equation Spalart–Allmaras-type models to state-of-the-art, seven-equation Reynolds stress models. The influence of the prediction of laminar/turbulent boundary layer transition on the numerical dynamic stall simulation is described. Results of both numerical methods are compared to allow conclusions to be drawn with respect to an improved prediction of dynamic stall.

scholarly journals Brick and Mortar Education vs. SCORM-based Education in Computer-programming Courses: A Comparative Study

2020 ◽  
Vol 14 (1) ◽  
pp. 1
Author(s):  
Mohammed Abu Shquier
Keyword(s):  
Online Education ◽  
Comparative Study ◽  
Programming Languages ◽  
Student Performance ◽  
Computer Programming ◽  
Learning Modules ◽  
Brick And Mortar ◽  
And Performance ◽  
The Impact ◽  
Programming Courses

Online education has positively influences student performance during universities lockdown nowadays due to COVID-19, in fact both educators and students have proven their ability to develop their teaching skills by emerging several technological tools. This article analyses the performance of two cohorts of students, the first cohort was taught traditionally while the other was taught online, the scope of this study is the students enrolled in programming languages at the Faculty of Computer Science and Information Technology at Jerash University, the study was carried out between the years 2017 - 2020. 1210 students have participated in the study. This study investigates a comparative study between different methods of delivering programming-languages courses over the 3-year period, the study also aims to shed light on the impact of traditional methods on delivering computer-programming courses and how it could be improved by emerging a SCORM learning multimedia and other learning modules, activities and resources. Result shows that online delivering of courses with the use of SCORM and other tools improves students’ scores and performance slightly, the article concludes that emerging technology to learning can improve the students' creativity, understanding and performance overall.

scholarly journals Fast computation of the iteration-based simulation method - case study of non-coherent ask with shadowing

2017 ◽  
Vol 14 (3) ◽  
pp. 415-431 ◽  
Author(s):  
Vladimir Mladenovic ◽  
Sergey Makov ◽  
Yigang Cen ◽  
Miroslav Lutovac
Keyword(s):  
Numerical Methods ◽  
Probability Density ◽  
Communication Systems ◽  
Data Transfer ◽  
Joint Probability ◽  
Simulation Method ◽  
Wireless Communication Systems ◽  
Closed Form Solutions ◽  
The Impact

This article presents a new method of fast symbolic computations of very complex calculations, which are necessary for the analysis, simulation, and design of wireless communication systems using CAS (Computer Algebra System). CAS is applied to formulate hypotheses and define joint probability density functions of certain modulation technique. This is used to prepare for the semi-symbolic calculation to complete specify wireless system by using CAS. We have developed an iteration-based simulation method that aids to solve semisymbolic expressions and gives closed form solutions (with some parameters specified as numbers and some as symbols). So far, they are solved by numerical methods. Students can perform performance analysis and understand the processes in the data transfer. Engineers and researchers may have a better insight into the impact of the important parameters necessary to properly transmit and detect information unlike traditional numerical methods. The main contribution is to obtain solutions for the probability density function, and outage probability where no solution can be obtained using numerical methods. A strong emphasis is placed on very fast calculations that significantly save the time of analysis, simulation, and design.

scholarly journals A problem-based learning curriculum and undergraduate performance in the final psychiatry examination at the Nelson R Mandela School of Medicine

2013 ◽  
Vol 19 (4) ◽  
pp. 4
Author(s):  
Shamima Saloojee ◽  
Jacqueline Van Wyk
Keyword(s):  
Undergraduate Students ◽  
Problem Based Learning ◽  
Case Vignette ◽  
Clinical Teachers ◽  
Traditional Lecture ◽  
Psychiatric Illnesses ◽  
Disease Patterns ◽  
School Of Medicine ◽  
The Impact ◽  
Undergraduate Performance

<p><strong>Background.</strong> Medical education reformers must consider disease patterns, health system expectations and clearly specified outcomes to ensure that revised curricula are relevant. South Africa needs clinically competent doctors in adequate numbers to address the burden of psychiatric illnesses.</p><p><strong>Objective.</strong> To evaluate the impact of a curricular reform, this study compared undergraduate students’ clinical competence in psychiatry following a change from a six-year traditional lecture-based (LB) curriculum to a five-year problem-based learning (PBL) curriculum. </p><p><span><strong>Method.</strong> The psychiatry examination records of 936 students enrolled in a PBL curriculum were compared with those of 771 students enrolled in a LB curriculum, covering a nine-year period from 2001 to 2009. Records covered the long case, case vignette and oral examinations. </span></p><p><strong>Results.</strong> Students in the PBL group performed significantly better in the problem-solving case vignette examination (<em>p</em>&lt;0.02). There were no statistically significant differences in the mean marks for the long case and the oral examination. Because the revised curriculum is shorter, one additional class of 200 students graduated during the duration of the study than would have been possible under the previous curriculum. </p><p><strong>Conclusion. </strong>The new PBL curriculum produced more doctors, but there was no change in their psychiatric knowledge and skills compared with graduates from the old LB curriculum. Clinical teachers need to define outcomes prior to curriculum revision, because these are essential for evaluating the curriculum’s success.</p>

The Buckling Mechanism of Square Tube Subjected to the Impact of a Mass

2014 ◽  
Vol 624 ◽  
pp. 267-271
Author(s):  
Zhu Hua Tan ◽  
Bo Zhang ◽  
Peng Cheng Zhai
Keyword(s):  
Numerical Simulation ◽  
Wave Propagation ◽  
Numerical Methods ◽  
Stress Wave ◽  
Significant Influence ◽  
Strain Localization ◽  
Stress Wave Propagation ◽  
Low Velocity ◽  
Buckling Modes ◽  
The Impact

The dynamic response of the square tube subjected to the impact of a mass was investigated by using experimental and numerical methods. The square tube was impacted by a mass at the velocity ranging from 5.09 m/s to 12.78 m/s, and different progressive buckling modes were obtained. The numerical simulation was also carried out to analyze the buckling mechanism of the square tube. The results show that there is obvious stress wave propagation and strain localization in the tube, which has a significant influence on the buckling mechanism of the tube. The stress wave and inertia of the mass play different roles at various impact velocities. And buckling mechanism at low velocity is mainly caused by stress wave, whereas the buckling mechanism at high velocity is resulted from the inertial of the mass.

scholarly journals Stope Stability Assessment and Effect of Horizontal to Vertical Stress Ratio on the Yielding and Relaxation Zones Around Underground Open Stopes Using Empirical and Finite Element Methods

2017 ◽  
Vol 62 (3) ◽  
pp. 653-669 ◽  
Author(s):  
Mohammadali Sepehri ◽  
Derek Apel ◽  
Wei Liu
Keyword(s):  
Finite Element ◽  
Numerical Methods ◽  
Stress Ratio ◽  
Three Dimensional ◽  
Element Model ◽  
Underground Mine ◽  
Graph Method ◽  
The Stability ◽  
Stability Graph ◽  
The Impact

AbstractPredicting the stability of open stopes can be a challenging task for underground mine engineers. For decades, the stability graph method has been used as the first step of open stope design around the world. However, there are some shortcomings with this method. For instance, the stability graph method does not account for the relaxation zones around the stopes. Another limitation of the stability graph is that this method cannot to be used to evaluate the stability of the stopes with high walls made of backfill materials. However, there are several analytical and numerical methods that can be used to overcome these limitations. In this study, both empirical and numerical methods have been used to assess the stability of an open stope located between mine levels N9225 and N9250 at Diavik diamond underground mine. It was shown that the numerical methods can be used as complementary methods along with other analytical and empirical methods to assess the stability of open stopes. A three dimensional elastoplastic finite element model was constructed using Abaqus software. In this paper a sensitivity analysis was performed to investigate the impact of the stress ratio “k” on the extent of the yielding and relaxation zones around the hangingwall and footwall of the understudy stope.

scholarly journals The Impact of the Main Infrastructure on the Effectiveness of Spatial and Economic Formations: Approaches to the Assessment

2021 ◽  
Vol 8 (3) ◽  
pp. 56-71
Author(s):  
Boris Krasnopolski ◽  
Keyword(s):  
Numerical Methods ◽  
Spatial Structure ◽  
Spatial Development ◽  
Regional Research ◽  
Spatial Systems ◽  
Spatial Formations ◽  
Far Eastern ◽  
The Impact

The problems of studying the role of the main infrastructure as the most important «framework» in the formation of the spatial structure of the country are considered and the main regularities of its influence on the systemic efficiency of spatial formations are substantiated. The methods of regional research, the issues of systemic balance of spatial development, numerical methods for assessing the emergence of spatial systems, the problems of development of territories and water areas of the Far Eastern Arctic, etc. are analyzed

scholarly journals The Impact of Noisy Physics on the Stability and Accuracy of Physics–Dynamics Coupling

2013 ◽  
Vol 141 (12) ◽  
pp. 4470-4486 ◽  
Author(s):  
Daniel Hodyss ◽  
Kevin C. Viner ◽  
Alex Reinecke ◽  
James A. Hansen
Keyword(s):  
Numerical Methods ◽  
Weather Prediction ◽  
Numerical Weather Prediction Model ◽  
The Novel ◽  
Subgrid Scale ◽  
Basic Principles ◽  
The Stability ◽  
Stability And Accuracy ◽  
Nonlinear Shear ◽  
The Impact

Abstract The coupling of the dynamical core of a numerical weather prediction model to the physical parameterizations is an important component of model design. This coupling between the physics and the dynamics is explored here from the perspective of stochastic differential equations (SDEs). It will be shown that the basic properties of the impact of noisy physics on the stability and accuracy of common numerical methods may be obtained through the application of the basic principles of SDEs. A conceptual model setting is used that allows the study of the impact of noise whose character may be tuned to be either very red (smooth) or white (noisy). The change in the stability and accuracy of common numerical methods as the character of the noise changes is then studied. Distinct differences are found between the ability of multistage (Runge–Kutta) schemes as compared with multistep (Adams–Bashforth/leapfrog) schemes to handle noise of various characters. These differences will be shown to be attributable to the basic philosophy used to design the scheme. Additional experiments using the decentering of the noisy physics will also be shown to lead to strong sensitivity to the quality of the noise. As an example, the authors find the novel result that noise of a diffusive character may lead to instability when the scheme is decentered toward greater implicitness. These results are confirmed in a nonlinear shear layer simulation using a subgrid-scale mixing parameterization. This subgrid-scale mixing parameterization is modified stochastically and shown to reproduce the basic principles found here, including the notion that decentering toward implicitness may lead to instability.

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