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Information Technology

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  • Published Date
Displaying 1801 - 1825 of 2282

Statistical Testing of Random Number Generators

October 19, 1999
Author(s)
D L. Banks
Random Number Generators (RNGs) are an important building block for algorithms and protocols in cryptography. They are paramount in the construction of encryption keys and other cryptographic algorithm parameters. In practice, statistical testing is

Mobile Streams: A Middleware for Reconfigurable Distributed Scripting

October 4, 1999
Author(s)
Mudumbai Ranganathan, V Schaal, V Galtier, Douglas C. Montgomery
A large class of distributed applications follow the event-driven or reactive paradigm. Such applications can benefit from Mobile Agent technology by making it easy to add re-configurability, extensibility, and failure resilience features at an application

1999 ITL Technical Accomplishments

October 1, 1999
Author(s)
Elizabeth B. Lennon, K K. Simon
The 1999 ITL Technical Accomplishments report presents the achievements and highlights of NIST's Information Technology Laboratory during FY 1999. Technical projects in eight divisions are described, followed by industry interactions, international

Air-Java: Networking for Smart Spaces

October 1, 1999
Author(s)
Kevin L. Mills
Increasingly people work and live on the move. To support this mobile lifestyle, especially as work becomes more intensely information-based, companies are producing various portable and embedded information devices. Concurrently, some interesting pico

Guest Editorial Article (Foreword)

October 1, 1999
Author(s)
Hamid Gharavi, L Hanzo
This article provides a short overview of past and present advancements in mobile communication systems, as well as identifying major challenges for the future generation of wireless technologies. Its main objective is to scan the special issue of the

Digital Video Test Collection

September 15, 1999
Author(s)
Carolyn M. Schmidt, Paul D. Over
By the end of 1999, the National Institute of Standards and Technology (NIST) plans to release the first installment of a public-domain digital video test collection. This first installment contains a series of digitized videos and their transcripts which

A Policy Perspective on Electronic Commerce

September 1, 1999
Author(s)
E Maxwell, S A. Wakid, J A. Moline
On July 1, 1997, President Clinton issued A Framework for Global Electronic Commerce identifying nine areas in which international agreements would be needed in order to preserve the Internet as a non-regulatory medium.The implementation of global

Enforcing Integrity While Maintaining Secrecy

July 27, 1999
Author(s)
D G. Marks
We consider the role of constraints in maintaining both secrecy and integrity in a multilevel secure database. In a multilevel database, certain integrity and classification constraints create a secrecy problem since data additions, deletions or

Annotation Collaboration Tool via SMIL (ACTS)

July 26, 1999
Author(s)
Wo L. Chang
The Web has emerged as a dominant mode of making information available and is increasingly seen as the medium to support collaboration across boundaries of geography and time. To realize this potential, the Web must support viewing and manipulating of

A Unique Institution: The History of NBS, 1950-1969

June 30, 1999
Author(s)
E Passaglia, K A. Beal
A follow-on to Measures for Progress by Rexmond C. Cochrane, this work covers the history of the National Bureau of Standards (NBS) from 1950-1969. While the book focuses on technical work, the management and administration of the Bureau are also discussed

The Apache/Linux Measurement Toolkit (ALMT) Using NIST-Developed Chip

June 15, 1999
Author(s)
D C. Tang, J H. Lin
This paper describes the development of the Apache-Linux Measurement Toolkit (ALMT), which is a highly accurate measurement tool for evaluating the performance of a Web server. The toolkit combines hardware and software to provide fine-grained data on the

A Queueing Model of a Spread Spectrum Multiple Access

June 1, 1999
Author(s)
Vladimir V. Marbukh, Nader Moayeri
We propose a queueing model of the reverse link from mobiles to the base station in a single cell of a cellular DS-CDMA system. Approximation of independent queues leads to a non-linear fixed point equation that describes globally or locally stable system

Re-Configurable Distributed Scripting

June 1, 1999
Author(s)
Mudumbai Ranganathan, L S. Andrey, V Schaal, J Favreau
A large class of distributed testing, control and collaborative applications are reactive or event driven in nature. Such applications can be structured as a set of handlers that react to events and that in turn can trigger other events. We have developed

Symposium on Computer-Supported Cooperative Work

June 1, 1999
Author(s)
Kevin L. Mills
IComputer-supported cooperative work (CSCW) holds great importance and promise for modern society. This paper provides an overview of seventeen papers comprising a symposium on CSCW. The overviewI also discusses some relationships among the contributions

A Framework for Throughput and Stability Analysis of a DS-CDMA Network

May 17, 1999
Author(s)
Vladimir V. Marbukh, Nader Moayeri
We propose a framework for throughput and stability analysis of a Direct Sequence Code Division Multiple Access (DS-CDMA) network. Given chip rate, processing gains, packet structure, coding scheme, and the characteristics of the wireless channel, we

Modem Design Issues in LMDS Systems

May 8, 1999
Author(s)
J E. Haakegaard
During the last 2-3 years, there has been considerable activity aimed towards deploying broadband wireless access systems. The US Local Multipoint Distribution Services (LMDS) auctions in February-March 1998 of 1.3 GHz of spectrum between 27.5 GHz and 31.3

Simulation and Performance Study of PNNI ATM Networks

March 1, 1999
Author(s)
Y M. Song, David E. Cypher, David H. Su
This paper presents the simulation and performance of PNNI ATM networks by using an ATM PNNI Routing Protocol Simulator (APRoPS). This simulator was developed based on the ATM Forum s PNNI routing protocol specification. With this simulator, one can design
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