Browsing UMBC Mathematics and Statistics Department by Title
Now showing items 209228 of 232

Stochastic Approximation Algorithm for Estimating Mixing Distribution for Dependent Observations
Estimating the mixing density of a mixture distribution remains an interesting problem in statistics literature. Using a stochastic approximation method, Newton and Zhang (1999) introduced a fast recursive algorithm for ... 
Stochastic Binary Opinion Model
(20190206)We study a stochastic binary opinion model where agents in a group are considered to hold an opinion of 0 or 1 at each moment. An agent in the group updates his/her opinion based on the group's opinion configuration and ... 
Stochastic precedence and minima among dependent variables.
(20200214)Abstract. The notion of stochastic precedence between two random variables emerges as a relevant concept in several fields of applied probability. When one consider a vector of random variables X1, ..., Xn, this notion ... 
Stochastic Precipitation Generation for the Potomac River Basin Using Hidden Markov Models
A daily precipitation generator based on hidden Markov models (HMM) using satellite precipitation estimates is studied for the Potomac river basin in Eastern USA over the wet season months of July to September. GPMIMERG ... 
Strong and Weak Scalability Studies for the 2D Poisson Equation on the Taki 2018 Cluster
(2019)The new 2018 nodes in the cluster taki in the UMBC High Performance Computing Facility contain two 18core Intel Skylake CPUs and 384 GB of memory per node, connected by an EDR (Enhanced Data Rate) InfiniBand interconnect. ... 
Strong and Weak Scalability Studies for the 3D Poisson Equation on the Taki 2018 Cluster
The new 2018 nodes in the cluster taki in the UMBC High Performance Computing Facility contain two 18core Intel Skylake CPUs and 384 GB of memory per node, connected by an EDR (Enhanced Data Rate) InfiniBand interconnect. ... 
Study of Exploiting CoarseGrained Parallelism in BlockOriented Numerical Linear Algebra Routines
(UMBC, 20200617)We have developed streaming implementations of two numerical linear algebra operations that further exploit the block decomposition strategies commonly used in these operations to obtain performance. The implementations ... 
Study of Free Alternative Numerical Computation Packages
(Society for Industrial and Applied Mathematics, 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 ... 
TeamBased Online Multidisciplinary Education on Big Data + HighPerformance Computing + Atmospheric Sciences
(UMBC HPCF, 2020)Given the context of many institutions moving to online instruction due to the COVID19 pandemic in 2020, we share our experiences of an online teambased multidisciplinary education program on big data + high performance ... 
Theory of Solutions for An Inextensible Cantilever
(20200524)Recent equations of motion for the large deflections of a cantilevered elastic beam are analyzed. In the traditional theory of beam (and plate) large deflections, nonlinear restoring forces are due to the effect of stretching ... 
Throughput studies on an InfiniBand interconnect via alltoall communications
(Association of Computing Literature (ACM), 20150412)Distributedmemory clusters are the most important type of parallel computer today, and they dominate the TOP500 list. The InfiniBand interconnect is the most popular network for distributedmemory compute clusters. ... 
Timestepping techniques to enable the simulation of bursting behavior in a physiologically realistic computational islet
(ScienceDirect, 20150214)Physiologically realistic simulations of computational islets of beta cells require the longtime solution of several thousands of coupled ordinary differential equations (ODEs), resulting from the combination of several ... 
Tolerance limits under zero‐inflated lognormal and gamma distributions
(Wiley, 20200528)The computation of upper tolerance limits is investigated for the zero‐inflated lognormal distribution and the zero‐inflated gamma distribution, with or without covariates. The methodologies investigated consist of a ... 
Tornado Storm Data Synthesization using Deep Convolutional Generative Adversarial Network: Related Works and Implementation Details
Predicting violent storms and dangerous weather conditions with current models can take a long time due to the immense complexity associated with weather simulation. Machine learning has the potential to classify tornadic ... 
A Unified Approach for Solving Sequential Selection Problems
(20190527)In this paper we develop a unified approach for solving a wide class of sequential selection problems. This class includes, but is not limited to, selection problems with noinformation, rankdependent rewards, and considers ... 
A Unified Approach for Solving Sequential Selection Problems
(20190125)In this paper we develop a unified approach for solving a wide class of sequential selection problems. This class includes, but is not limited to, selection problems with no–information, rank–dependent rewards, and ... 
Use of Deep Learning to Classify Compton Camera Based Prompt Gamma Imaging for Proton Radiotherapy
Realtime imaging has potential to greatly increase the effectiveness of proton beam therapy for cancer treatment. One promising method of realtime imaging is the use of a Compton camera to detect prompt gamma rays, which ... 
Using Machine Learning Techniques for Supercell Tornado Prediction with Environmental Sounding Data
Tornadoes pose a forecast challenge to National Weather Service forecasters because of their quick development and potential for lifethreatening damage. The use of machine learning in severe weather forecasting has recently ... 
Using Reading Quizzes in STEM Classes—The What, Why, and How
(National Science Teachers Association, 2015)Many active learning pedagogies depend on students' preparing for class in advance. One common method for holding students accountable for this preparation is the use of reading quizzes. When used thoughtfully, reading ...