Issue 10 Volume 41 May 16, 2003

anonymous exceptions, it is error-prone and it is inappropriate for some language features including tasking and tagged types.
Ada programs with exceptions are difficult to understand, develop, modify or analyze, and the exception handling features can
be misused in a number of ways. In this paper we introduce the requirements for good exception handling features. We classify
the problems with Ada exception handling into two subsets: serious conceptual problems that require an improvement of the
language features, and problems attributable to the misuse of the existing features. Problems in the second category can be
solved by improving programmers’ understanding of the features and ways of using them.
NTIS
Ada (Programming Language); Computer Programming; Data Processing; Software Engineering
20030037150 Pacific Northwest National Lab., Richland, WA
User Instructions for the Systems Assessment Capability, Rev. O. Computer Codes. Volume 2: Impact Modules
Eslinger, P. W.; Arimescu, C.; Kanyid, B. A.; Miley, T. B.; Jun. 2002; 274 pp.; In English
Report No.(s): DE2002-15001052; No Copyright; Avail: Department of Energy Information Bridge
In late 1997, the U.S. Department of Energy (DOE) established the Groundwater/Vadose Zone Integration Project
(Integration Project). One activity of the Integration Project is an assessment of cumulative impacts for Hanford Site wastes
on the subsurface environment and the Columbia River. Through the application of a system assessment capability (SAC),
decisions for each cleanup and disposal action will be able to take into account the composite effect of other cleanup and
disposal actions. The SAC Systems Code is a tool used to simulate the migration of contaminants (analytes) present on the
Hanford Site and assess the potential impacts of the analytes, including dose to humans, socio-cultural impacts, economic
impacts, and ecological impacts. The system of codes includes existing computer programs, new computer programs,
electronic data libraries, and data formatting processors (or data translators).
NTIS
System Effectiveness; Systems Analysis; Ground Water; Vadose Water; Computer Programs
62
COMPUTER SYSTEMS
Includes computer networks and distributed processing systems. For information systems see 82 Documentation and Information
Science. For computer systems applied to specific applications, see the associated category.
20030032342 NASA Kennedy Space Center, Cocoa Beach, FL, USA
Wireless Sensor Networks Approach
Perotti, Jose M.; January 2003; 27 pp.; In English; National Design Engineering Show (NDES): National Technology
Transfer, 3-6 Mar. 2003, Chicago, IL, USA; Original contains black and white illustrations; No Copyright; Avail: CASI; A03,
Hardcopy
This viewgraph presentation provides information on hardware and software configurations for a network architecture for
sensors. The hardware configuration uses a central station and remote stations. The software configuration uses the ‘lost
station’ software algorithm. The presentation profiles a couple current examples of this network architecture in use.
CASI
Sensors; Networks; Architecture (Computers)
20030032374 Medical Coll. of Pennsylvania, Philadelphia, PA
Remote Monitoring of Cellular Network Assembly and Function
Noronha, Vijay; Yarman, Can Everan; Kresh, J. Y.; Onaral, Banu; Oct 2001; ISBN0309084997; 5 pp.; In English; Original
contains color illustrations
Report No.(s): AD-A410180; No Copyright; Avail: CASI; A01, Hardcopy
A video microscopy based collaboratory has been developed to study cellular network dynamics, in particular, to monitor
live-cell spatio-temporal organization in real-time. The aim is to investigate the effects of intercellular communication on
tissue genesis, differentiation and cell survival. The platform enables multiple researchers to remotely access a digital
microscopy system consisting of very high-resolution CCD-imaging technology coupled with real-time (^1Gbps) data transfer
throughput. Remote control and image acquisition facilitates collaboration between cellular biologists, tissue engineers and
computational scientists studying complex cellular organization dynamics and assembly. The remote control microscope is
connected to a local Server’ such that a Client’ using any web browser that supports Java can access it. The Server’ software
is written in Java 2 (jdk 1.3). Any Internet user can control the microscope and interact with other users who are on-line or
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