UMBC Mathematics and Statistics Department: Recent submissions
Now showing items 1-20 of 401
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Characterization and estimation of high dimensional sparse regression parameters under linear inequality constraints
(2023-02-03)Modern statistical problems often involve such linear inequality constraints on model parameters. Ignoring natural parameter constraints usually results in less efficient statistical procedures. To this end, we define a ... -
Biological Nitrogen Fixation of Cowpea in a No-Till Intercrop under Contrasting Rainfed Agro-Ecological Environments
(MDPI, 2023-01-25)Nitrogen (N) availability under no-till intercropping systems has not been widely investigated in diverse agro-ecological regions in Limpopo Province. Two seasons of rainfed experiments were conducted during 2018/19 and ... -
Adaptive local false discovery rate procedures for highly spiky data and their application RNA sequencing data of yeast SET4 deletion mutants
(Wiley, 2021-07-28)Chromatin dynamics are central to the regulation of gene expression and genome stability. In order to improve understanding of the factors regulating chromatin dynamics, the genes encoding these factors are deleted and ... -
Repression of Middle Sporulation Genes in Saccharomyces cerevisiae by the Sum1-Rfm1-Hst1 Complex Is Maintained by Set1 and H3K4 Methylation
(Oxford University Press, 2017-12-01)The conserved yeast histone methyltransferase Set1 targets H3 lysine 4 (H3K4) for mono, di, and trimethylation and is linked to active transcription due to the euchromatic distribution of these methyl marks and the recruitment ... -
Set4 regulates stress response genes and coordinates histone deacetylases within yeast subtelomeres
(Life Science Alliance, 2021-10-08)The yeast chromatin protein Set4 is a member of the Set3-subfamily of SET domain proteins which play critical roles in the regulation of gene expression in diverse developmental and environmental contexts. We previously ... -
The histone methyltransferases Set5 and Set1 have overlapping functions in gene silencing and telomere maintenance
(Taylor & Francis, 2016-12-02)Genes adjacent to telomeres are subject to transcriptional repression mediated by an integrated set of chromatin modifying and remodeling factors. The telomeres of Saccharomyces cerevisiae have served as a model for ... -
Fractional Order Networked Control System using Stochastic Iterative Learning Control
(IEEE, 2022-12-30)Networked control systems (NCSs) are one of the main areas in control and computer engineering. Despite the many advantages that NCSs have, they impose restrictions such as random data dropout on control systems. We can ... -
Using group testing in a two-phase epidemiologic design to identify the effects of a large number of antibody reactions on disease risk
(Springer Nature, 2022-12-16)Background: The role of immunological responses to exposed bacteria on disease incidence is increasingly under investigation. With many bacterial species, and many potential antibody reactions to a particular species, the ... -
A Novel Regularity Criterion For The three-dimensional Navier-Stokes Equations Based On Finitely many observations
(2022-11-28)In this paper we present two results: (1) A data assimilation algorithm for the 3D Navier-Stokes equation (3D NSE) using nodal data, and, as a consequence (2) a novel regularity criterion for the 3D NSE based on finitely ... -
Dynamic Stochastic Variational Inequalities and Convergence of Discrete Approximation
(SIAM, 2022-11-21)This paper studies dynamic stochastic variational inequalities (DSVIs) to deal with uncertainties in dynamic variational inequalities (DVIs). We show the existence and uniqueness of a solution for a class of DSVIs in C¹× ... -
Chemical systems with limit cycles
(2022-11-10)The dynamics of a chemical reaction network (CRN) is often modelled under the assumption of mass action kinetics by a system of ordinary differential equations (ODEs) with polynomial right-hand sides that describe the time ... -
Solving Mathematical Epidemiology Models Via Neural Nets Tuned By Mesh Adaptive Direct Search
(Illinois State University, 2022-11)This study was carried out with the aim of developing an artificial neural network model that will predict the rate of positive cases, infected and recovered individuals in the population with respect to the COVID-19 ... -
The Power of GPUs in Machine Learning to Improve Proton Beam Therapy for Cancer Treatment
Proton beam therapy utilizes proton beams to treat cancerous tumors while avoiding unnecessary radiation exposure to surrounding healthy tissues. Real-time imaging of the proton beams while they travel through a patient’s ... -
A stochastic Galerkin method with adaptive time-stepping for the Navier–Stokes equations
(Elsevier, 2022-07-29)We study the time-dependent Navier–Stokes equations in the context of stochastic finite element discretizations. Specifically, we assume that the viscosity is a random field given in the form of a generalized polynomial ... -
Stochastic Precipitation Generation for the Chesapeake Bay Watershed using Hidden Markov Models with Variational Bayes Parameter Estimation
(2022-10-09)Stochastic precipitation generators (SPGs) are a class of statistical models which generate synthetic data that can simulate dry and wet rainfall stretches for long durations. Generated precipitation time series data are ... -
Clientelism and Corruption in the Wake of Disasters
(CENTRO, The Center for Puerto Rican Studies at Hunter College,, 2022)Puerto Rico’s history of crises provides an opportune context for analyzing corruption in times of disaster. This article forwards a conceptual understanding of the phenomenon of pork-barrel spending and disaster resource ... -
Multi-Layer Recurrent Neural Networks for the Classification of Compton Camera Based Imaging Data for Proton Beam Cancer Treatment
Proton beam therapy is a unique form of radiotherapy that utilizes protons to treat cancer by irradiating cancerous tumors, while avoiding unnecessary radiation exposure to surrounding healthy tissues. Real-time imaging ... -
Seismic resurfacing of asteroid (433) Eros from cratering impact suggests presence of asteroid families in near-Earth space
(2022-10-06)An asteroid’s interior contributes to the response of its surface and shape to forces from space, 16 including meteoroid impacts [e.g., Chapman 1996, Bottke et al. 2020], tidal effects [e.g., Hurford 17 et al. 2016, ... -
Convergence of the mini-batch SIHT algorithm
(2022-09-29)The Iterative Hard Thresholding (IHT) algorithm has been considered extensively as an effective deterministic algorithm for solving sparse optimizations. The IHT algorithm benefits from the information of the batch (full) ... -
Korovkin-type results and doubly stochastic transformations over Euclidean Jordan algebras
(2022-09-27)A well-known theorem of Korovkin asserts that if {Tk} is a sequence of positive linear transformations on C[a, b] such that Tk(h) → h (in the sup-norm on C[a, b]) for all h ∈ {1, φ, φ2}, where φ(t) = t on [a, b], then ...