[en] This report gives a brief description of the program PDPCODE, along with operating instructions for users. Error messages which may be encountered are also included. (author)

No abstract available

[en] The paper describes the characteristics of a simulation system to study the dynamic behaviour of operating system software in detail. The use of the system which appears to the application programmer like a virtual PL/I-machine will be illustrated by an example. (orig.)

No abstract available

[en] A photon shielding code based on the point-kernel method has been developed. The code, entitled PUTZ, allows the specification of three-dimensional source and body geometries using simple parallelepipeds and annular parallelepipeds, and permits the inclusion of multiple sources and multiple detectors in a single case. A flexible free-form type input format is used, and attenuation data and material buildup factors are contained within the code for selected materials. Versions of the code are available for running on an IBM mainframe computer and an IBM-PC microcomputer (or compatible). A comprehensive user's manual is provided, which describes the basic algorithms, input requirements, output listings, and major limitations

[en] PRO/Mapper is an application for the Digital Equipment Corporation PRO/300 series of personal computers that facilitates the preparation of visuals such as graphs, charts, and maps in color or black and white. The user prepares an input data file containing English-language commands and writes it into a file using standard editor. PRO/Mapper then reads these files and draws graphs, maps, boxes, and complex line segments onto the computer screen. Axes, curves, and error bars may be plotted in graphical presentations. The commands of PRO/Mapper are a subset of the commands of the more sophisticated MAPPER program written for mainframe computers. The PRO/Mapper commands were chosen primarily for the production of linear graphs. Command files written for the PRO/300 are upward compatible with the Martin Marietta Energy Systems version of MAPPER and can be used to produce publication-quality slides, drawings, and maps on the various output devices of the Oak Ridge National Laboratory mainframe computers

[en] Some shortcomings in a previous package, namely, no facility for polar plots, difficulties encountered when the data went outside the subject space and the absence of a dotdashed line facility caused problems in implementing the package on a computer. Using CalComp routines a polar plotting routine is developed. Improvements in the previous package for plotting linear-linear, log-linear and log-log graphs and histograms are also included. The only restriction on the improved and extended package is the number of theoretical and experimental points to be plotted. (Auth.)

[en] A two-electron temperature plasma flowing from a source to an exposed surface is studied analytically and with a simulation code. The collector floating potential is continuously decreasing with the increasing hot to cold electron temperature ratio. It is also found that at the hot to cold electron temperature ratio which is greater than 15 and in a certain range of their density ratio three simultaneous solutions exist for the source sheath potential drop. Outside this range it has either a small value determined by cold electrons or a large value determined by hot electrons. It is shown by particle-in-cell (PIC) simulations that a potential structure with a double layer is formed in the plasma in the former cases. The numerical results of the analytical and simulation study are compared and good agreement is found. (author)

[en] PLOTCP is a diagram plotting package based on CALCOMP-software. It is designed to evaluate large amounts of data, which are stored on external data pools like disks or magnetic tapes. PLOTCP has built in DEFAULT options which allow to draw diagramms with a minimum input. But by overwriting DEFAULT values one can tailor different problem oriented graphs with simple control cards. PLOTCP provides control outputs for graph, in particular an option is built in to tabulate the plotted curves. The PLOTCP input is automatically checked, incompatibilities are corrected as far as possible. Larger errors lead to a program stop with self explaining error messages, in this case the CALCOMP plot file is still terminated with the normal exit statement. (orig./WB)

No abstract available