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open access

Data Sciences Technology for Homeland Security Information Management and Knowledge Discovery

Description: The Department of Homeland Security (DHS) has vast amounts of data available, but its ultimate value cannot be realized without powerful technologies for knowledge discovery to enable better decision making by analysts. Past evidence has shown that terrorist activities leave detectable footprints, but these footprints generally have not been discovered until the opportunity for maximum benefit has passed. The challenge faced by the DHS is to discover the money transfers, border crossings, and o… more
Date: January 6, 2005
Creator: Kolda, T.; Brown, D.; Corones, J.; Critchlow, T.; Eliassi-Rad, T.; Getoor, L. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

"After the Genome 5, Conference to be held October 6-10, 1999, Jackson Hole, Wyoming"

Description: The postgenomic era is arriving faster than anyone had imagined-- sometime during 2000 we'll have a large fraction of the human genome sequence. Heretofore, our understanding of function has come from non-industrial experiments whose conclusions were largely framed in human language. The advent of large amounts of sequence data, and of "functional genomic" data types such as mRNA expression data, have changed this picture. These data share the feature that individual observations and measuremen… more
Date: October 6, 1999
Creator: Brent, Roger
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

''After the Genome 5 Conference'' to be held October 6-10, 1999 in Jackson Hole, Wyoming

Description: OAK B139 The postgenomic era is arriving faster than anyone had imagined--sometime during 2000 we'll have a large fraction of the human genome sequence. Heretofore, our understanding of function has come from non-industrial experiments whose conclusions were largely framed in human language. The advent of large amounts of sequence data, and of ''functional genomic'' data types such as mRNA expression data, have changed this picture. These data share the feature that individual observations and … more
Date: October 6, 1999
Creator: Brent, Roger
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Flow volumes for interactive vector field visualization

Description: Flow volumes are the volumetric equivalent of stream lines. They provide more information about the vector field being visualized than do stream lines or ribbons. Presented is an efficient method for producing flow volumes, composed of transparently rendered tetrahedra, for use in an interactive system. The problems of rendering, subdivision, sorting, rendering artifacts, and user interaction are dealt with.
Date: April 6, 1993
Creator: Max, N.; Becker, B. & Crawfis, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Evaluation of ultraviolet radiation, ozone and aerosol interactions in the troposphere using automatic differentiation. Final report

Description: A major goal of this research was to quantify the interactions between UVR, ozone and aerosols. One method of quantification was to calculate sensitivity coefficients. A novel aspect of this work was the use of Automatic Differentiation software to calculate the sensitivities. The authors demonstrated the use of ADIFOR for the first time in a dimensional framework. Automatic Differentiation was used to calculate such quantities as: sensitivities of UV-B fluxes to changes in ozone and aerosols i… more
Date: October 6, 1998
Creator: Carmichael, G.R. & Potra, F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Scheduling jobs that arrive over time

Description: A natural and basic problem in scheduling theory is to provide good average quality of service to a stream of jobs that arrive over time. In this paper we consider the problem of scheduling n jobs that are released over time in order to minimize the average completion time of the set of jobs. In contrast to the problem of minimizing average completion time when all jobs are available at time 0, all the problems that we consider are NP-hard, and essentially nothing was known about constructing g… more
Date: April 6, 1995
Creator: Phillips, C.; Stein, C. & Wein, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

OptiFit: Computer-Vision-Based Smartphone Application to Measure the Foot from Images and 3D Scans

Description: Article asserts that the foot is a vital organ, as it stabilizes the impact forces between the human skeletal system and the ground. The authors present an instep girth measurement algorithm, and they used a pixel per metric algorithm for measurement; these algorithms were accordingly integrated with the application.
Date: December 6, 2022
Creator: Rafiq, Riyad Bin; Hoque, Kazi Miftahul; Kabir, Muhammad Ashad; Ahmed, Sayed & Laird, Craig
Item Type: Refine your search to only Article
Partner: UNT College of Engineering
open access

Measuring the impact of suspending Umrah, a global mass gathering in Saudi Arabia on the COVID‑19 pandemic

Description: This article uses a stratified SEIR epidemic model to evaluate the impact of Umrah, a global Muslim pilgrimage to Mecca, on the spread of the COVID-19 pandemic during the month of Ramadan, the peak of the Umrah season. The analyses provide insights into the effects of global mass gatherings on the progression of the COVID-19 pandemic locally and globally.
Date: September 6, 2021
Creator: Alshammari, Sultanah M.; Almutiry, Waleed K.; Gwalani, Harsha; Algarni, Saeed M. & Saeedi, Kawther
Item Type: Refine your search to only Article
Partner: UNT College of Engineering
open access

Future algorithm research needs for partitioning in solid mechanics and coupled mechanical models

Description: Exceptional progress has been made in mathematical algorithm research leading to optimized mesh partitions for the highly unstructured grids occurring in finite element applications in solid mechanics. Today another research challenge presents itself. Research is needed to include boundary conditions into the algorithms for partitioning meshes. We describe below two methods we use currently to accomplish this and propose a more general approach be developed which would apply to our problems tod… more
Date: October 6, 1997
Creator: Hoover, C. G.; DeGroot, A. J. & Sherwood, R. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Texture splats for 3D vector and scalar field visualization

Description: Volume Visualization is becoming an important tool for understanding large 3D datasets. A popular technique for volume rendering is known as splatting. With new hardware architectures offering substantial improvements in the performance of rendering texture mapped objects, we present textured splats. An ideal reconstruction function for 3D signals is developed which can be used as a texture map for a splat. Extensions to the basic splatting technique are then developed to additionally represent… more
Date: April 6, 1993
Creator: Crawfis, R. A. & Max, N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Dataflow and remapping for wavelet compression and realtime view-dependent optimization of billion-triangle isosurfaces

Description: Currently, large physics simulations produce 3D fields whose individual surfaces, after conventional extraction processes, contain upwards of hundreds of millions of triangles. Detailed interactive viewing of these surfaces requires powerful compression to minimize storage, and fast view-dependent optimization of display triangulations to drive high-performance graphics hardware. In this work we provide an overview of an end-to-end multiresolution dataflow strategy whose goal is to increase eff… more
Date: October 6, 2000
Creator: Duchaineau, M A; Porumbescu, S D; Bertram, M; Hamann, B & Joy, K I
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Computations of Eigenpair Subsets with the MRRR Algorithm

Description: The main advantage of inverse iteration over the QR algorithm and Divide & Conquer for the symmetric tridiagonal eigenproblem is that subsets of eigenpairs can be computed at reduced cost. The MRRR algorithm (MRRR = Multiple Relatively Robust Representations) is a clever variant of inverse iteration without the need for reorthogonalization. STEGR, the current version of MRRR in LAPACK 3.0, does not allow for subset computations. The next release of STEGR is designed to compute a (sub-)set of k … more
Date: June 6, 2006
Creator: Marques, Osni A.; Parlett, Beresford N. & Vomel, Christof
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Accurately measuring MPI broadcasts in a computational grid

Description: An MPI library's implementation of broadcast communication can significantly affect the performance of applications built with that library. In order to choose between similar implementations or to evaluate available libraries, accurate measurements of broadcast performance are required. As we demonstrate, existing methods for measuring broadcast performance are either inaccurate or inadequate. Fortunately, we have designed an accurate method for measuring broadcast performance, even in a chall… more
Date: May 6, 1999
Creator: T, Karonis N & de Supinski, B R
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
captions transcript

[Bridging the Gap-Cooperative Education]

Description: A video of a promotion for the Cooperative Education Program. This program places students with internships that are directly related to their major. This video includes interviews, explanations, and opinions from the creators of this program and the students who are involved.
Date: February 6, 1983
Duration: 33 minutes 09 seconds
Creator: University of North Texas. Center for Media Production.
Item Type: Refine your search to only Video
Location: 33.207488 -97.152586
Partner: UNT Libraries Special Collections
open access

Comparing GPU Implementations of Bilateral and Anisotropic Diffusion Filters for 3D Biomedical Datasets

Description: We compare the performance of hand-tuned CUDA implementations of bilateral and anisotropic diffusion filters for denoising 3D MRI datasets. Our tests sweep comparable parameters for the two filters and measure total runtime, memory bandwidth, computational throughput, and mean squared errors relative to a noiseless reference dataset.
Date: May 6, 2010
Creator: Howison, Mark
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

MARIANE: MApReduce Implementation Adapted for HPC Environments

Description: MapReduce is increasingly becoming a popular framework, and a potent programming model. The most popular open source implementation of MapReduce, Hadoop, is based on the Hadoop Distributed File System (HDFS). However, as HDFS is not POSIX compliant, it cannot be fully leveraged by applications running on a majority of existing HPC environments such as Teragrid and NERSC. These HPC environments typicallysupport globally shared file systems such as NFS and GPFS. On such resourceful HPC infrastruc… more
Date: July 6, 2011
Creator: Fadika, Zacharia; Dede, Elif; Govindaraju, Madhusudhan & Ramakrishnan, Lavanya
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

An {Omega}({radical}log log n) lower bound for routing in optical networks

Description: Optical communication is likely to significantly speed up parallel computation because the vast bandwidth of the optical medium can be divided to produce communication networks of very high degree. However, the problem of contention in high-degree networks makes the routing problem in these networks theoretically (and practically) difficult. In this paper we examine Valiant`s h-relation routing problem, which is a fundamental problem in the theory of parallel computing. The h-relation routing p… more
Date: November 6, 1993
Creator: Goldberg, L. A.; Jerrum, M. & MacKenzie, P. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A Computational Workbench Environment For Virtual Power Plant Simulation

Description: In this paper we describe our progress toward creating a computational workbench for performing virtual simulations of Vision 21 power plants. The workbench provides a framework for incorporating a full complement of models, ranging from simple heat/mass balance reactor models that run in minutes to detailed models that can require several hours to execute. The workbench is being developed using the SCIRun software system. To leverage a broad range of visualization tools the OpenDX visualizatio… more
Date: November 6, 2001
Creator: Bockelie, Michael J.; Swensen, David A.; Denison, Martin K. & Sarofim, Adel F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Genome-Resolved Proteomic Stable Isotope Probing of Soil Microbial Communities Using 13CO2 and 13C-Methanol

Description: Article describes experiment where proteomic sable isotope probing (SIP) was combined with targeted metagenomic binning to reconstruct metagenome-assembled genomes (MAGs) of the microorganisms producing labeled proteins. Carbon flows were tracked from 13CO2 to the rhizosphere communities of Zea mays, Triticum aestivum, and Arabidopsis thaliana.
Date: December 6, 2019
Creator: Li, Zhou; Yao, Qiuming; Guo, Xuan; Crits-Christoph, Alexander; Mayes, Melanie A.; Hervey, William Judson IV et al.
Item Type: Refine your search to only Article
Partner: UNT College of Engineering
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