U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Information technology

Search Publications

Search Title, Abstract, Conference, Citation, Keyword or Author
Published Date
Displaying 851 - 875 of 2300

Re-projection of Terabyte-Sized Images

October 7, 2013
Author(s)
Peter Bajcsy, Antoine Vandecreme, Mary C. Brady
This work addresses the problem of re-projecting a terabyte-sized 3D data set represented as a set of 2D Deep Zoom pyramids. In general, a re-projection for small 3D data sets is executed directly in RAM. However, RAM becomes a limiting factor for terabyte

Terabyte Size Image Computations on Hadoop Cluster Platforms

October 7, 2013
Author(s)
Peter Bajcsy, Antoine Vandecreme, Julien M. Amelot, Phuong T. Nguyen, Joe Chalfoun, Mary C. Brady
We present a characterization of four basic terabyte size image computations on a Hadoop cluster in terms of their relative efficiency according to the modified Amdahl’s law. The work is motivated by the fact that there is a lack of standard benchmarks and

The TREC Medical Records Track

September 25, 2013
Author(s)
Ellen M. Voorhees
The Text REtrieval Conference (TREC) is a series of annual workshops designed to build the infrastructure for large-scale evaluation of search systems and thus improve the state-of-the-art. Each workshop is organized around a set "tracks", challenge

Secure Domain Name System (DNS) Deployment Guide

September 18, 2013
Author(s)
Ramaswamy Chandramouli, Scott W. Rose
The Domain Name System (DNS) is a distributed computing system that enables access to Internet resources by user-friendly domain names rather than IP addresses, by translating domain names to IP addresses and back. The DNS infrastructure is made up of

Fourier Domain Optical Tool Normalization for Quantitative Parametric Image Reconstruction

September 5, 2013
Author(s)
Jing Qin, Richard M. Silver, Bryan M. Barnes, Hui Zhou, Francois R. Goasmat
There has been much recent work in developing advanced optical metrology methods that use imaging optics for critical dimension measurements and defect detection. Sensitivity to nanometer scale changes has been observed when measuring critical dimensions

Congestion Due to Random Walk Routing

August 31, 2013
Author(s)
Vladimir V. Marbukh, Iraj Saniee, Onuttom Narayan
In this paper we derive an analytical expression for the mean load at each node of an arbitrary undirected graph for the uniform multicommodity flow problem under random walk routing. We show the mean load is linearly dependent on the nodal degree with a

Electronic Authentication Guideline

August 29, 2013
Author(s)
William E. Burr, Donna F. Dodson, Elaine M. Newton, Ray Perlner, William Polk, Sarbari Gupta, Emad A. Nabbus
This recommendation provides technical guidelines for Federal agencies implementing electronic authentication and is not intended to constrain the development or use of standards outside of this purpose. The recommendation covers remote authentication of

ITL Publishes Guidance on Preventing and Handling Malware Incidents

August 22, 2013
Author(s)
Elizabeth B. Lennon
This ITL Bulletin summarizes a new ITL publication, NIST Special Publication 800- 83 Revision 1,Guide to Malware Incident Prevention and Handling for Desktops and Laptops,which gives receommendations for organizations to improve their malware incident

ACT-Touch Reference Manual, Working Draft

August 15, 2013
Author(s)
Kristen Greene, Franklin Tamborello
ACT-Touch is a set of manual motor request extensions for ACT-R 6 (Adaptive Control of Thought-Rational, hereafter, ACT-R) . These manual request extensions constitute theoretical claims predicting motor preparation and execution times for certain manual

Overview of the TREC 2011 Microblog Track

August 15, 2013
Author(s)
Ian M. Soboroff, Iadh Ounis, Craig Macdonald, Jimmy Lin
The Microblog track examines search tasks and evaluation methodologies for information seeking behaviors in microblogging environments such as Twitter. It was first introduced in 2011, addressing a real-time adhoc search task, whereby the user wishes to

Electrically-protected resonant exchange qubits in triple quantum dots

July 31, 2013
Author(s)
Jacob M. Taylor, Vanita Srinivasa, Medford Jim
We present a modulated microwave approach for quantum computing with qubits comprising three spins in a triple quantum dot. This approach includes single- and two-qubit gates that are protected against low-frequency electrical noise, due to an operating

Where in the Internet is Congestion?

July 26, 2013
Author(s)
Daniel I. Genin
Understanding distribution of congestion in the Internet is a long-standing problem. Using data from the SamKnows US broadband access network measurement study, commissioned by the FCC, we explore patterns of congestion distribution in DSL and cable

Shape Calculus for Shape Energies in Image Processing

July 22, 2013
Author(s)
Gunay Dogan, Ricardo H. Nochetto
Many image processing problems are naturally expressed as energy minimization or shape optimization problems, in which the free variable is a shape, such as a curve in 2d or a surface in 3d. Examples are image segmentation, multiview stereo reconstruction

Digital Signature Standard (DSS)

July 19, 2013
Author(s)
National Institute of Standards and Technology (NIST), Elaine Barker
This Standard specifies a suite of algorithms that can be used to generate a digital signature. Digital signatures are used to detect unauthorized modifications to data and to authenticate the identity of the signatory. In addition, the recipient of signed

ITL Issues Guidelines for Managing the Security of Mobile Devices

July 15, 2013
Author(s)
Elizabeth B. Lennon
This ITL Bulletin announces the publication of NIST Special Publication 800-124 Revision 1, Guidelines for Managing the Security of Movile Devices in the Enterprise. The revised guidelines will assist organizations in managing the security of mobile
Was this page helpful?