Browsing UMBC Mathematics and Statistics Department by Title
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A COMPARATIVE EVALUATION OF MATLAB, OCTAVE, FREEMAT, AND SCILAB FOR RESEARCH AND TEACHING
(2010)The commercial software package Matlab is the most widely used numerical computational package. GNU Octave, FreeMat, and Scilab are other numerical computational packages that have many of the same features as Matlab. ... 
A Comparative Evaluation of Matlab, Octave, FreeMat, and Scilab on Tara
(2011)Matlab is the most popular commercial package for numerical computations in mathematics, statistics, the sciences, engineering, and other fields. Octave, FreeMat, and Scilab are free numerical computational packages that ... 
A Comparative Evaluation of Matlab, Octave, FreeMat, Scilab, and R on Tara
(2012)Matlab is the most popular commercial package for numerical computations in mathematics, statistics, the sciences, engineering, and other fields. Octave, FreeMat and Scilab are free numerical computational packages that ... 
A Comparative Evaluation of Matlab, Octave, FreeMat, Scilab, R, and IDL on Tara
(2012)Matlab is the most popular commercial package for numerical computations in mathematics, statistics, the sciences, engineering, and other fields. IDL, a commercial package used for data analysis, along with the free numerical ... 
A Comparative Evaluation of Matlab, Octave, R, and Julia on Maya
(2017)Matlab is the most popular commercial package for numerical computations in mathematics, statistics, the sciences, engineering, and other fields. Octave is a freely available software used for numerical computing. R is a ... 
A Comparative Study of the Parallel Performance of the Blocking and NonBlocking MPI Communication Commands on an Elliptic Test Problem on the Cluster tara
(2016)In this report we study the parallel solution of the elliptic test problem of a Poisson equation with homogenous Dirichlet boundary conditions in a two dimensional domain. We use the finite difference method to approximate ... 
Comparison of Local Powers of Some Exact Tests for a Common Normal Mean with Unequal Variances
(United States Census Bureau, 20200520)The inferential problem of drawing inference about a common mean µ of several independent normal populations with unequal variances has drawn universal attention, and there are many exact tests for testing a null hypothesis ... 
Comparison of Performance Analysis Tools for Parallel Programs Applied to CombBLAS
(2015)Performance analysis tools are powerful tools for high performance computing. By breaking down a program into how long the CPUs are taking on each process (pro filing) or showing when events take place on a timeline over ... 
A Comparison of Solving the Poisson Equation Using Several Numerical Methods in Matlab and Octave on the Cluster maya
(2014)Systems of linear equations resulting from partial differential equations arise frequently in many phenomena such as heat, sound, and fluid flow. We apply the finite difference method to the Poisson equation with homogeneous ... 
A Comparison of Stochastic Precipitation Generation Models for the Potomac River Basin
Weather ensembles are an integral part of weather forecasting and can also be used to test the sensitivity and performance of climate models. Among meteorological variables, simultaneous simulation of precipitation at ... 
COMSOL Modeling of Groundwater Flow and Contaminant Transport in TwoDimensional Geometries With Heterogeneities
(2011)The Delmarva Peninsula is located on the East Coast of the United States, between the Chesapeake Bay and Atlantic Ocean. Industrial farming in the Delmarva Peninsula leads to levels of nutrients, in particular nitrogen, ... 
The cone of Ztransformations on Lorentz cone
(University of Wyoming, 201909)In this paper, the structural properties of the cone of Ztransformations on the Lorentz cone are described in terms of the semidefinite cone and copositive/completely positive cones induced by the Lorentz cone and its ... 
Continuous Data Assimilation for the Three Dimensional NavierStokes Equations
(20200303)In this paper, we provide conditions, \emph{based solely on the observed data}, for the global wellposedness, regularity and convergence of the AzouniOlsonTiti data assimilation algorithm (AOT algorithm) for a LerayHopf ... 
Convergence Order Studies for Elliptic Test Problems with COMSOL Multiphysics
(2008)The convergence order of fi nite elements is related to the polynomial order of the basis functions used on each element, with higher order polynomials yielding better convergence orders. However, two issues can prevent ... 
Copulabased Correlation Structure for Multivariate Emission Distributions in Hidden Markov Models
(2020)Hidden Markov models (HMM) for multisite daily precipitation usually assume that precipitation at each location is independently distributed conditional on the daily state; correlation in precipitation at different locations ... 
Coupled PDEs with Initial Solution from Data in COMSOL 4
(2013)Many physical applications require the solution of a system of coupled partial differential equations (PDEs). In most cases the analytic PDE solution does not exist for this system and we need to solve the problem numerically ... 
Crosscancer Prediction: A Novel Machine Learning Approach to Discover Molecular Targets for Development of Treatments for Multiple Cancers
(SAGE journals, 20181022)Conventional cancer drug development has long been limited to organ or tissuespecific cancer types. However, it has become increasingly known that specific genetic abnormalities are responsible for the carcinogenesis of ... 
Daily Precipitation Generation using a Hidden Markov Model with Correlated Emissions for the Potomac River Basin
(UMBC, 20200630)A daily precipitation generator based on a hidden Markov model with Gaussian copulas (HMMGC) is constructed using remote sensing data from GPMIMERG for the Potomac river basin on the East Coast of the USA. Daily ... 
Data assimilation for the NavierStokes equations using local observables
(20200816)We develop, analyze, and test an approximate, global data assimilation/synchronization algorithm based on purely local observations for the twodimensional NavierStokes equations on the torus. We prove that, for any error ... 
Data Compression for Optimization of a Molecular Dynamics System: Preserving Basins of Attraction
(Springer, Cham, 20190608)Understanding the evolution of atomistic systems is essential in various fields such as materials science, biology, and chemistry. The gold standard for these calculations is molecular dynamics, which simulates the dynamical ...