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214 results on '"Browne, J. C."'

3. Controlled Trial of Various Anti-D Dosages in Suppression of Rh Sensitization following Pregnancy : Report to the Medical Research Council by the Working Party on the Use of Anti-D Immunoglobulin for the Prevention of Isoimmunization of Rh-negative Women During Pregnancy

Author

Mollison, P. L., Barron, S. L., Bowley, C. C., Browne, J. C. McClure, Clarke, Cyril, Doll, Richard, Goldsmith, K. L. G., Holman, C. A., Hughes-Jones, N. C., Humphrey, J. H., Kellar, R. J., d’A Maycock, W., Robertson, J. G., Tovey, G. H., Walker, W., Wallace, J., Willoughby, M. L. N., Huntingford, P. J., Jenkins, W. J., and Clarke, Cyril A.

Published
1975
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33. Memory Management and Response Time.

Author

Bell, G., Siewiorek, D., Fuller, S. H., Brown, R. M., Browne, J. C., and Chandy, K. M.

Subjects
COMPUTER memory management, COMPUTER networks, ELECTRONIC systems, ONLINE data processing, INTERACTIVE computer systems, COMPUTERS
Abstract

This paper presents a computationally tractable methodology for including accurately the effects of finite memory size and workload memory requirements in queueing network models of computer systems. Empirical analyses and analytic studies based on applying this methodology to an actual multiaccess interactive system are reported. Relations between workload variables such as memory requirement distribution and job swap time, and performance measures such as response time and memory utilization are graphically displayed. A multiphase, analytically soluble model is proposed as being broadly applicable to the analysis of interactive computer systems which use nonpaged memories. [ABSTRACT FROM AUTHOR]

Published
1977

34. Trace-Driven Modeling and Analysis of CPU Scheduling in a Multiprogramming System.

Author

Sherman, Stephen, Baskett, III, Forest, Browne, J. C., and Randell, B.

Subjects
MULTIPROGRAMMING (Electronic computers), COMPUTER systems, ELECTRONIC systems, COMPUTER simulation, COMPUTER software, COMPUTER industry
Abstract

Microscopic level Job stream data obtained in a production environment by an event-driven software probe is used to drive a model of a multiprogramming computer system. The CPU scheduling algorithm of the model is systematically varied. This technique, called trace-driven modeling, provides an accurate replica of a production environment for the testing of variations in the system. At the same time alterations in scheduling methods can be easily carried out in a controlled way with cause and effects relationships being isolated. The scheduling methods tested included the best possible and worst possible methods, the traditional methods of multiprogramming theory, round-robin, first-come- first-served, etc., and dynamic predictors. The relative and absolute performances of these scheduling methods are given. It is concluded that a successful CPU scheduling method must be preemptive and must prevent a given job from holding the CPU for too long a period. [ABSTRACT FROM AUTHOR]

Published
1972
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37. Gravitational Wave Extraction and Outer Boundary Conditions by Perturbative Matching

Author

Walker, P., Laguna, P., Parashar, M., Anninos, P., Fox, G. C., Evans, C. R., Huq, M. F., Marsa, R. L., Saylor, P. E., Haupt, T., York, J. W., Teukolsky, S. A., Gómez, R., Bishop, N. T., Saied, F., Cook, G. B., Kidder, L. E., Choptuik, M. W., Shapiro, S. L., Finn, L. S., Smarr, L., Lehner, L., Lenaghan, J., Papadopoulos, P., Klasky, S. A., Brandt, S. R., Camarda, K., Matzner, R. A., Shoemaker, D., Correll, R. R., Abrahams, A. M., Rupright, M. E., Winicour, J., Masso, J., Seidel, E., Mitra, S., Browne, J. C., Szilágyi, B., Rezzolla, L., Anderson, A., Baumgarte, T. W., Landry, W., and Scheel, M. A.

Published
1998
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38. Data management in engineering

Author

Browne, J. C

Subjects
Administration And Management
Abstract

An introduction to computer based data management is presented with an orientation toward the needs of engineering application. The characteristics and structure of data management systems are discussed. A link to familiar engineering applications of computing is established through a discussion of data structure and data access procedures. An example data management system for a hypothetical engineering application is presented.

Published
1976

39. Fortran Automatic Code Evaluation System (FACES)

Author

Browne, J. C, Davis, T, Haller, A, Henneman, M, Kleir, R, and Lasseter, G. L

Subjects
Mathematics And Information Sciences
Abstract

Software package takes as input FORTRAN program which may contain many modules (subroutines and functions). Main parts: (1) FORTRAN front end gathers information about input program and (2) set of routines organized as diagnostic package evaluates information and prints warning messages concerning actual or potential errors.

Published
1974

40. Design of a verifiable subset for HAL/S

Author

Browne, J. C, Good, D. I, Tripathi, A. R, and Young, W. D

Subjects
Computer Programming And Software
Abstract

An attempt to evaluate the applicability of program verification techniques to the existing programming language, HAL/S is discussed. HAL/S is a general purpose high level language designed to accommodate the software needs of the NASA Space Shuttle project. A diversity of features for scientific computing, concurrent and real-time programming, and error handling are discussed. The criteria by which features were evaluated for inclusion into the verifiable subset are described. Individual features of HAL/S with respect to these criteria are examined and justification for the omission of various features from the subset is provided. Conclusions drawn from the research are presented along with recommendations made for the use of HAL/S with respect to the area of program verification.

Published
1979

41. Evaluation of verifiability in HAL/S

Author

Young, W. D, Tripathi, A. R, Good, D. I, and Browne, J. C

Subjects
Computer Programming And Software
Abstract

The ability of HAL/S to write verifiable programs, a characteristic which is highly desirable in aerospace applications, is lacking since many of the features of HAL/S do not lend themselves to existing verification techniques. The methods of language evaluation are described along with the means in which language features are evaluated for verifiability. These methods are applied in this study to various features of HAL/S to identify specific areas in which the language fails with respect to verifiability. Some conclusions are drawn for the design of programming languages for aerospace applications and ongoing work to identify a verifiable subset of HAL/S is described.

Published
1979

42. A data management system for engineering and scientific computing

Author

Elliot, L, Kunii, H. S, and Browne, J. C

Subjects
Computer Programming And Software
Abstract

Data elements and relationship definition capabilities for this data management system are explicitly tailored to the needs of engineering and scientific computing. System design was based upon studies of data management problems currently being handled through explicit programming. The system-defined data element types include real scalar numbers, vectors, arrays and special classes of arrays such as sparse arrays and triangular arrays. The data model is hierarchical (tree structured). Multiple views of data are provided at two levels. Subschemas provide multiple structural views of the total data base and multiple mappings for individual record types are supported through the use of a REDEFINES capability. The data definition language and the data manipulation language are designed as extensions to FORTRAN. Examples of the coding of real problems taken from existing practice in the data definition language and the data manipulation language are given.

Published
1978

47. Electronic structure of ch super plus.

Author

Browne, J. C, Matsen, F. A, and Moore, P. L

Subjects
Physics, Atomic, Molecular, And Nuclear
Abstract

Methylidene electronic structure determinations using Slater-type orbitals for all wave functions

Published
1965

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