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R.H. Balay

Publications and source records attributed to R.H. Balay.

10 recordsLinked to original sources
USGS1993

GKS-PC; a kernel graphics programming system for IBM-PC and compatible microcomputers

GKS-PC is a Graphical Kernel System for the family of microcomputers compatible with the IBM-PC/MS-DOS standard. This library of functions allows an application program to control a computer graphics display conforming to a variety of graphics display standards. GKS-PC contains a subset of the GKS system of graphics primitive functions. GKS is an ANSI standardized computer graphics software development environment. General descriptions of GKS are in the references (American National Standards Committee X3, 1984) and (Hopgood et.al., 1983) listed on page 52. GKS-PC is not a comprehensive package for producing commercial grade graphics software, and it is not a general animation environment even though certain kinds of animation are possible with this software. The 5.25" diskette containing the GKS-PC object library files and installation program is available as Open-File Report 93-241-B.

Open-File Report↗
USGS1991

A microcomputer program for energy assessment and aggregation using the triangular probability distribution

A general risk-analysis method was developed for petroleum-resource assessment and other applications. The triangular probability distribution is used as a model with an analytic aggregation methodology based on probability theory rather than Monte-Carlo simulation. Among the advantages of the analytic method are its computational speed and flexibility, and the saving of time and cost on a microcomputer. The input into the model consists of a set of components (e.g. geologic provinces) and, for each component, three potential resource estimates: minimum, most likely (mode), and maximum. Assuming a triangular probability distribution, the mean, standard deviation, and seven fractiles (F100, F95, F75, F50, F25, F5, and F0) are computed for each component, where for example, the probability of more than F95 is equal to 0.95. The components are aggregated by combining the means, standard deviations, and respective fractiles under three possible siutations (1) perfect positive correlation, (2) complete independence, and (3) any degree of dependence between these two polar situations. A package of computer programs named the TRIAGG system was written in the Turbo Pascal 4.0 language for performing the analytic probabilistic methodology. The system consists of a program for processing triangular probability distribution assessments and aggregations, and a separate aggregation routine for aggregating aggregations. The user's documentation and program diskette of the TRIAGG system are available from USGS Open File Services. TRIAGG requires an IBM-PC/XT/AT compatible microcomputer with 256kbyte of main memory, MS-DOS 3.1 or later, either two diskette drives or a fixed disk, and a 132 column printer. A graphics adapter and color display are optional. ?? 1991.

Computers & Geosciences↗