Computers: Computer Programming and Software

SEP 1965

Authors: Ronnie L. Ezell; ARMY MISSILE RESEARCH DEVELOPMENT AND ENGINEERING LAB REDSTONE ARSENAL AL AER OBALLISTICS DIRECTORATE

The full text of this report is not available and therefore is not for sale. This information is provided for reference purposes only.

A method is described for determining the optimum geometric parameters for a missile to attain a desired performance. The approximate vicinity of the solution is found. Parametric values in this vicinity; the function describing the missile performance; and the partial derivatives of the function are inserted into the program. From this information, the minimum parameters are then obtained. (Author)

AN ALGORITHM FOR THE DEFORMATION METHOD OF QUADRATIC PROGRAMMING.

SEP 1965

Authors: Roger Even Bove; AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

The algorithm presented represents the Zahl deformation method for quadratic programming. It gives an explanation of a modified Iverson programming language.

A HEURISTIC DERIVATION SEEKER FOR UNIFORM PREFIX LANGUAGES.

SEP 1965

Authors: Gerhard Chroust; MOORE SCHOOL OF ELECTRICAL ENGINEERING UNIV OF PENNSYLVANIA PHILADELPHIA

The paper describes the theoretical background and the realization of a program which tries to find the derivation of a prefix word ('the problem') for some classes of uniform prefix languages. The program can be applied to different language specifications which may contain a base alphabet, defined symbols, axioms, a substitution rule and transformation rules. The specification is similar to formalized logic, but is capable of expressing a much broader ...

QUARTERLY TECHNICAL PROGRESS REPORT; JULY, AUGUST, SEPTEMBER 1965.

SEP 1965

Authors: ILLINOIS UNIV URBANA DEPT OF COMPUTER SCIENCE

Contents: Circuit research program; hardware systems research; software systems research; Illinois pattern recognition computer: ILLIAC III; numerical methods, computer arithmetic and artificial languages: ILLIAC IV; ILLIAC II service, use, and program development; IBM service, use, and program development; problem specifications; general laboratory information.

THEORETICAL PREDICTION OF THE FLOW IN THE WAKE OF A HELICOPTER ROTOR. PART I. DEVELOPMENT OF THEORY AND RESULTS OF COMPUTATIONS.

SEP 1965

Authors: Peter Crimi; CORNELL AERONAUTICAL LAB INC BUFFALO N Y

A study was performed with the objective of predicting the time-varying flow in the vicinity of a helicopter in hovering or forward flight. An analytical model was formulated which represents the rotor, its wake and the fuselage of the aircraft. The model for the wake has been simplified in a manner consistent with flow visualization studies by representing the wake as tip vortices emanating from each blade. The wake vortices ...

THEORETICAL PREDICTION OF THE FLOW IN THE WAKE OF A HELICOPTER ROTOR. PART 2. FORMULATION AND APPLICATION OF THE ROTOR-WAKE-FLOW COMPUTER PROGRAM.

SEP 1965

Authors: Peter Crimi; CORNELL AERONAUTICAL LAB INC BUFFALO N Y

Two digital computer programs were prepared which direct the calculation of the time-varying flow in the vicinity of a helicopter rotor in forward or hovering flight. Fuselage interference effects are taken into account. The applicability of these programs to specific problems and procedures for their use are discussed. First, the assumptions made in constructing the mathematical model and the relationship of the model to the physical flow are outlined. In ...

NOTE ON COMPUTER PROGRAM FOR THE SINGLE CAMERA ORIENTATION CASE.

SEP 1965

Authors: Lila M. Butler; BALLISTIC RESEARCH LABS ABERDEEN PROVING GROUND MD

This report presents an addendum to Ballistic Research Laboratories Report No. 1268, Computer Program for the 'SINGLE CAMERA ORIENTATION' case of the GENERAL PROBLEM OF PHOTOGRAMMETRY. A new method for the computation of the mean errors of unit weight for the plate and point coordinates as developed by H. H. Schmid is the main modification to the existing method of computation. (Author)

STANDARDS AND SPECIFICATIONS FOR MYLAR FAN-FOLDED PERFORATOR TAPE TO BE USED WITH THE AN/BRN-3 RADIO NAVIGATION SET.

SEP 1965

Authors: T. D. Mock; JOHNS HOPKINS UNIV SILVER SPRING MD APPLIED PHYSICS LAB

The report serves as a specification for procuring mylar fan-fold perforator tape stock and as a standard for reproducing AN/BRN-3 computer programs on perforated tape.

SIMULATION OF AN AIR-TRAFFIC CONTROL SYSTEM,

SEP 1965

Authors: Jane-Ring F. Crane; INSTITUTE FOR DEFENSE ANALYSES ALEXANDRIA VA ECONOMIC AND POLITICAL STUDIES D IV

Constraints imposed by transition-area capacity and oceanic-area separation criteria increase operating costs for aircarriers. A simulated air-traffic control system was developed to relate these costs to increases in the annual traffic levels through 1975. The mathematical model and computer program developed for this purpose provide delay and diversion costs resulting from various traffic flows, transition-area capacity estimates, and oceanic-area separation criteria for the 1965-1975 period. These cost estimates provide a ...

NDC-1050A Technical Report, Volume II. Programming Manual. Technical Description Test Panel NDC-1050A Computer.

SEP 1965

Authors: NORTRONICS PALOS VERDES PENINSULA CA

Volume II comprises a programming manual and a descriptive document on Test Panel which is an item of support equipment for the NDC-1050A computer.

THE ROLE OF AIRPOWER IN LIMITED WAR AND COUNTERINSURGENCY.

31 AUG 1965

Authors: HONEYWELL INC MINNEAPOLIS MN MILITARY PRODUCTS GROUP

The PATTERN study is a part of an Air Force analysis of the 1972 tactical conflict situation in Southeast Asia and its implications for the weapons system mix requirements. The basic output of the PATTERN study is a calculation of the preferred weapons system mix that maximizes the achievable capability for a given budget. The study employs two fundamentally different types of techniques. The relevance portion is an orderly breakdown ...

A NOTE ON PUSHDOWN STORE AUTOMATA AND REGULAR SYSTEMS.

31 AUG 1965

Authors: Sheila A. Greibach; SYSTEM DEVELOPMENT CORP SANTA MONICA CALIF

A theorem of Bar-Hillel, Perles, and Shamir is used to show that the set of tapes left on the pushdown store by a regular set is regular. As a consequence, one obtains a generalization of a theorem of Buchi. (Author)

INTRODUCTION TO THE THEORY AND APPLICATIONS OF THE REMAPPER.

31 AUG 1965

Authors: F. Ollendorff; E. Hirsch; TECHNION - ISRAEL INST OF TECH HAIFA

An electronic analog computer is studied, capable of reconstructing figures, graphs, shapes, etc., in three- or higher-dimensional spaces from their two-dimensional projections given in the form of drawings, slides or photographs. The pattern of the reconstructed figure can then be distorted, remapped according to certain transformations, reprojected on desired planes to form new, differently parallaxed pictures of the reconstructed figure, or simply stored in a digital computer memory as a ...

Data Subroutine CNA Computer Program 13-65S,

26 AUG 1965

Authors: T. W. Mason; CENTER FOR NAVAL ANALYSES WASHINGTON D C RESEARCH GROUP

A computer program written in FORTRAN is described which allows the facility of free-format data input. Flow charts and a listing of the program are included. (Author)

GENERATION OF THE LUNAR EPHEMERIS ON AN ELECTRONIC COMPUTER.

24 AUG 1965

Authors: M. E. Ash; LINCOLN LAB MASS INST OF TECH LEXINGTON

This report describes the method of integration that is used in a Lincoln Laboratory computer program (the Planetary Ephemeris Program) to determine as functions of time the position and velocity of the Moon and the partial derivatives of these quantities with respect to initial conditions. The method consists of numerically integrating the differential equations for the differences between the positions, velocities and partial derivatives in the true lunar orbit and ...

ASPECTS OF COST AND UTILITY ANALYSIS IN PLANNING

12 AUG 1965

11 pages

Authors: Oliver Bryk; RESEARCH ANALYSIS CORP MCLEAN VA

The full text of this report is available for sale.

Some aspects of planning in preparation for resource allocation decisions among alternatives, which are generally made under uncertainty, are discussed from the pragmatic viewpoint of a practicing analyst. The report is concerned only with that area of economic analysis in which the inputs are not commensurable with the outputs. (The terms 'input' and 'output' will be used throughout this paper in their general meaning and not in the specialized meaning ...

JTS USER'S GUIDE (OPERATIONAL DESCRIPTION).

11 AUG 1965

Authors: Phyllis R. Kennedy; SYSTEM DEVELOPMENT CORP SANTA MONICA CALIF

The document is a user's guide that provides the user with an operating description of the JTS compiler. It describes the user's interactions with the compiler in a time-sharing environment. While the guide does not include a complete description of the JTS language, it does include reference tables listing the JTS language forms and library procedures. (Author)

Equations for Computer Processing U.S. Weather Bureau Radiosonde Temperature and Relative Humidity Data

06 AUG 1965

Authors: Novella S. Billions; ARMY MISSILE RESEARCH DEVELOPMENT AND ENGINEERING LAB REDSTONE ARSENAL AL PHYSICAL SCIENCES DIRECTORATE

The report presents equations for the derivation of temperature and relative humidity from the incoming signal of the U. S. Weather Bureau radiosonde with the fast-response humidity element.

THE CL-II PRIMER,

02 AUG 1965

Authors: J. Z. Golini; MASSACHUSETTS COMPUTER ASSOCIATES INC WAKEFIELD

The CL-II Programming System has been developed for the Air Battle Analysis Center, now a part of the Directorate of Studies and Analyses, Headquarters, United States Air Force. The objective of the System is to facilitate the development and operation of large scale simulation programs and data management programs. The overall design of the System is oriented toward providing assistance to every user of the 7094 computer in all aspects ...

SOME RESULTS ON CAPABILITIES OF ONEDIMENSIONAL ITERATIVE LOGICAL NETWORKS AND THEIR RELATED PROBLEMS.

01 AUG 1965

Authors: Tadao Kasami; HAWAII UNIV HONOLULU DEPT OF ELECTRICAL ENGINEERING

Results on capabilities of one-dimensional systems of iterative logical networks are presented. It is shown that (1) Kilmer's result (AD-425 943) implies a positive answer to Hennie's conjecture ('Iterative arrays of logical circuits,' MIT Press, Cambridge, Mass. 1961) that the unilateral systems which are stable in the wide sense are more powerful than the strictly stable unilateral systems, (2) the unilateral systems which are stable in the wide sense are ...

APPROXIMATE SOLUTION OF THE EXTERIOR DIRICHLET PROBLEM AND THE CALCULATION OF ELECTROSTATIC CAPACITY,

AUG 1965

Authors: Donald Greenspan; Edward Silverman; MATHEMATICS RESEARCH CENTER UNIV OF WISCONSIN MADISON

A digital computer technique is described for approximating the solution of the exterior Dirichlet problem. The essence of the method is the combination of geometric inversion with a method for approximating the solution of an interior Dirichlet problem. Two and three dimensional problems are discussed separately because each requires a different treatment of boundary data. The technique for three dimensions extends to higher dimensional problems. Application is made to the ...

MONTE CARLO CODES FOR STUDY OF LIGHT TRANSPORT IN THE ATMOSPHERE. VOLUME I: DESCRIPTION OF CODES.

AUG 1965

Authors: David G. COLLINS; Michael B. Wells; RADIATION RESEARCH ASSOCIATES INC FORT WORTH TEX

Monte Carlo procedures designated as LITE-I and LITE-II were developed to study the transport of light through the earth's atmosphere under various environmental conditions. LITE-I treats monochromatic light emitted from a point source, and LITE-II treats monochromatic plane sources of light. The codes have been written in both ALGOL for the Burroughs B-5000 and FORTRAN II for other computers. The codes are sufficiently flexible to treat multiple scattering in an ...

MONTE CARLO CODES FOR STUDY OF LIGHT TRANSPORT IN THE ATMOSPHERE. VOLUME II: UTILIZATION INSTRUCTIONS.

AUG 1965

Authors: David G. COLLINS; Michael B. Wells; RADIATION RESEARCH ASSOCIATES INC FORT WORTH TEX

Monte Carlo procedures designated at LITE-I and LITE-II were developed to study the transport of light through the earth's atmosphere under various environmental conditions. LITE-I treats monochromatic light emitted from a point source, and LITE-II treats monochromatic plane sources of light. The codes have been written in both ALGOL for the Burrough's B-5000 and FORTRAN II for other computers. The codes are sufficiently flexible to treat multiple scattering in an ...

ROUTINE FOR IMPROVING THE ACCURACY OF THE ROOTS OF POLYNOMIALS WITH REAL COEFFICIENTS.

AUG 1965

Authors: Alene K. Depue; BALLISTIC RESEARCH LABS ABERDEEN PROVING GROUND MD

A routine has been developed to compute the real and complex conjugate roots for a polynomial with real coefficients. When the polynomial is of odd degree, the routine locates one real root and then reduces the polynomial to an even degree. The remainder of the roots are located in pairs by using factors and Bairstow's Algorithm. There is no special provision to detect multiple roots and hence the routine may ...

CRASH X: AN IMPROVED COMPUTER PROGRAM TO CALCULATE THE DYNAMIC ELASTIC-PLASTIC RESPONSES OF FREE, SINGLE-LAYER CIRCULAR RINGS SUBJECTED TO ARBITRARY SEQUENTIAL LOADINGS,

AUG 1965

Authors: William A. Loden; Joel C. Speare; MASSACHUSETTS INST OF TECH CAMBRIDGE AEROELASTIC AND STRUCTURES RESEARCH LAB

A description of a FORTRAN II computer program (CRASH X) improved and with its capability extended over a similar one for a general numerical method for analyzing large two-dimensional elastic-plastic dynamic deformations of free single layer circular rings subjected to an initial impulse loading followed by an arbitrary prescribed distributed transient pressure loading is given. Program assumptions, arrangement, data input procedures and instructions, and program outputs are described in detail. ...

RESEARCH ON ADVANCED DYNAMIC ATTRIBUTE EXTRACTION TECHNIQUES.

31 JUL 1965

Authors: John T. GILMORE Jr.; Frank S. greatorex Jr.; Edward N. Chase; ADAMS (CHARLES W) ASSOCIATES INC CAMBRIDGE MASS

Two main areas of effort are described. The first is the development of a color display system which allows for the definition and modification of data stored in a list structure. The second area is the development of a man-graphic communication system which utilizes a buffered display scope, light pen and push-bottom panel to provide the console user with the basic ability to draw charts, diagrams, curves, etc., on the ...

PREFLIGHT DATA PLAN.

22 JUL 1965

Authors: MARTIN CO DENVER CO

A comprehensive software plan for the Large Payload Test Vehicle.

A PRELIMINARY SKETCH OF FORMULA ALGOL.

21 JUL 1965

Authors: Alan J. Perlis; Renato Iturriaga; Thomas Standish; CARNEGIE-MELLON UNIV PITTSBURGH PA DEPT OF COMPUTER SCIENCE

In earlier years algebraic languages, list processing languages and string manipulating languages have existed separately from one another. Recently, formula manipulating languages have evolved, and, in addition, there have been efforts to combine various different kinds of processing into one language. The design of Formula Algol represents an effort in this direction. Specifically, Formula Algol is an extension to Algol providing formula manipulating, list processing, and limited string capabilities. Thus, ...

A Fortran IV Program for the Solution of One-Dimensional Heat Conduction Problems in Multilayer Plates, Cylinders, and Spheres Subject to Arbitrary Aerodynamic Heat Transfer.

17 JUL 1965

Authors: W. R. Compton; L. D. Schultz; NAVAL ORDNANCE TEST STATION CHINA LAKE CA

AN EFFICIENT RECOGNITION AND SYNTAXANALYSIS ALGORITHM FOR CONTEXT-FREE LANGUAGES.

11 JUL 1965

Authors: Tadao Kasami; HAWAII UNIV HONOLULU DEPT OF ELECTRICAL ENGINEERING

An efficient algorithm of recognition and syntaxanalysis for the full class of context-free languages without the difficulty of exponential growth of computing time with the length n of input sequence is presented. This algorithm makes use of the essential property of a context-free language as a multi-parenthesis system. It is shown in this paper that a context-free language is n cubed-recognizable in the sense of Hartmanis and Stearns ('Computational complexity ...

SPEECH ANALYSIS

01 JUL 1965

104 pages

Authors: George W. Hughes; John F. Hemdal; PURDUE UNIV LAFAYETTE IN SCHOOL OF ELECTRICAL ENGINEERING

The limitations of speech recognition procedures which depend solely on acoustic data are discussed. One such 'primary recognition' scheme, based on phoneme classification by tracking the acoustic correlates of a set of distinctive features, is presented. Programmed on a digital computer, these logical operations on digitalized spectra of 17-msec samples of speech were tested on some 300 nonsense utterances from two talkers. A priori information about individual talker characteristics is ...

THEORY, PRACTICE, AND TREND IN BUSINESS PROGRAMMING.

01 JUL 1965

Authors: Christopher J. Shaw; SYSTEM DEVELOPMENT CORP SANTA MONICA CALIF

Surveys some work done in the last few years in the United States, both practical and theoretical in nature, likely to have an impact on programming practices for commercial and administrative problems. Topics include: nonprocedural languages, which emphasize problem statement rather than problem-solving procedures: generalized file processing systems, which enable program to be described in terms of files and reports and small sets of relatively powerful filekeeping operations; useroriented, on-line ...

DESIGN OF RELIABILITY CENTRAL DATA MANAGEMENT SUBSYSTEM. VOLUME 2

JUL 1965

Authors: J. Sable; AUERBACH CORP PHILADELPHIA PA

This report discusses the design of a file structure and an information storage and retrieval system for the planned U. S. Air Force Reliability Central. Volume I of this report presents a functional description of the system, called the Reliability Central Data Management Subsystem (RCDMS). Volume II compares the design of the Reliability Central Data Management Subsystem (RCDMS) with other major data management systems in existence or currently under development. ...

FORCE STRUCTURE COST MODEL FILE MAINTENANCE PROGRAM: OPERATOR'S MANUAL.

JUL 1965

Authors: Robert E. Pugh ; Jodie T. Allen; RESEARCH ANALYSIS CORP MCLEAN VA

This document provides guidance in the use of the File Change routine to the analyst preparing data for the FOSCOM data file. It includes a discussion of the different types of change items along with substantive examples of their possible use, the mechanics of preparing a deck of changes to the file; a description of the format and use of the various output listings; and lastly, a detailed analysis of ...

SYSTRAN (SYSTEMS ANALYSIS TRANSLATOR): A DIGITAL COMPUTER PROGRAM.

JUL 1965

Authors: D. J. La Jeunesse; E. B. weis Jr.; T. J. hogan Jr.; TECHNOLOGY INC DAYTON OHIO

The mechanics, mathematics, and usage of a program written in FORTRAN IV and MAP for the IBM 7094 are described. The program is called SYSTRAN (systems analysis translator) and it includes subroutines for most of the common tools for frequency domain analysis of linear systems ( such as Fourier transforms and inverse Fourier transforms, complex algebra, and correlation functions). The report is essentially an instruction manual. It contains a discussion ...

SOME STUDIES IN GAME PLAYING WITH A DIGITAL COMPUTER.

JUL 1965

Authors: Thomas G. Williams; CARNEGIE INST OF TECH PITTSBURGH PA

The general trend in artificial intelligence is to try to write programs that have general problem solving ability, rather than ones that are particularly good at one specific task. The program described in this dissertation is designed to play a large number of common board and card games. To play a game in this system, it is necessary to describe the objects used in playing the game and the rules ...

A REVISED METHOD OF COMPUTING THE OVERPRESSURE ISOBARS IN THE BLAST FIELD OF ARTILLERY.

JUL 1965

Authors: George Schlenker; Stuart Olson; ARMY WEAPONS COMMAND ROCK ISLAND IL WEAPONS OPERATIONS RESEARCH OFFICE

Recognizing the need for a simpler and more exact computational procedure for locating the peak static overpressure isobars in the blast field of artillery, the authors have prepared a computer program written in FORTRAN, to accomplish this. The program requires interior ballistic data, cannon dimensions, and muzzle brake data. Polar coordinates (with the center of muzzle at zero degree quadrant elevation as a pole) are printed for each of nine ...

COMPUTING PROGRAMS FOR SURFACE WAVE TRAINS OF POINT SOURCES

30 JUN 1965

46 pages

Authors: A. V. Hershey; NAVAL WEAPONS LAB DAHLGREN VA

Descriptions are given for four programs which compute the components of velocity in the wave train of a unit source. The programs give the velocity at an arbitrary position in any direction and at any distance from the source. The programs have been used to compute a table of components of velocity for 27000 positions.

AN INTRODUCTORY COURSE IN COMPUTER PROGRAMMING,

15 JUN 1965

Authors: Robert T. Braden; Alan J. Perlis; CARNEGIE-MELLON UNIV PITTSBURGH PA DEPT OF COMPUTER SCIENCE

The course described herein is the means by which a university student is introduced to complex computation. This first contact should happen at the earliest possible time in his college education, and the contact should be analytical, not descriptive. Together with courses in mathematics and natural language, this course should contribute to his development of fluency in the use of intellectual tools. It is hoped that the material presented here ...

LISP PRIMER: A SELF-TUTOR FOR Q-32 LISP 1.5.

14 JUN 1965

Authors: Clark Weissman; SYSTEM DEVELOPMENT CORP SANTA MONICA CALIF

The document is a self-tutor for LISP 1.5 programming, particularly for on-line Q-32 LISP 1.5. Material is organized into chapters that, by discussion and example, progressively expand the student's understanding of the language and ability to write programs in the language. A carefully selected and graduated set of exercises for use on-line is provided as an integral part of each chapter. Computer-checked answers for each exercise are also provided as ...

The Advice Taker and GPS,

10 JUN 1965

Authors: Barbara Huberman; STANFORD UNIV CALIF DEPT OF COMPUTER SCIENCE

Using the formalism of the Newell-Shaw-Simon General Problem Solver to solve problems expressed in McCarthy's Advice Taker formalism is discussed. Some revisions of the formalism of can and cause described in another paper are proposed. (Author)

GENERATION OF PLANETARY EPHEMERIDES ON AN ELECTRONIC COMPUTER.

02 JUN 1965

Authors: M. E. Ash; LINCOLN LAB MASS INST OF TECH LEXINGTON

A computer program, called the Planetary Ephemeris Program (PEP), is being written at Lincoln Laboratory. The purpose of the program is to improve planetary and lunar ephemerides using the results of radar and optical observations. In this report, the author derives the differential equations that are numerically integrated in PEP to determine as functions of time the positions and velocities of the planets, of the Earth-Moon barycenter and of the ...

SPADE Performance Test Planning: Data Gathering and Extraction for the Shore Based Tests.

02 JUN 1965

Authors: C. H. Sturtevant; NAVY ELECTRONICS LAB SAN DIEGO CALIF

This document is one of several written to describe in detail the plans for evaluating the performance of the Sonar Processing and Display Equipments (SPADE) at NEL. The specific subject of this memorandum is data gathering and extraction for these tests. (Author)

PROGRAMMING, INTEGRATION, AND CHECKOUT OF THE STORED PROGRAM ALPHA-NUMERIC BEACON SYSTEM.

JUN 1965

Authors: UNIVAC DIV SPERRY RAND CORP ST PAUL MINN

The Stored Program Alpha-Numeric Beacon System provides enroute area controllers with bright display of symbolic and alpha-numeric data relative to controller initiated tracks and automatically maintains continuous association between this data and beacon video by means of digital tracking techniques. The system consists of a digital computational subsystem, three beacon subsystems, and a display subsystem. Work performed under this contract includes design and preparation of the computer program for the ...

A STUDY OF A FAMILY OF COMPLEX SYSTEMS: AN APPROACH TO THE INVESTIGATION OF ORGANISMS BEHAVIOR.

JUN 1965

Authors: Crayton C. Walker; ILLINOIS UNIV URBANA ELECTRICAL ENGINEERING RESEARCH LAB

A family of complex systems is examined which is defined with reference only to theoretically basic characteristics of the systems' parts and their interrelationship. The systems considered are intricate structures built up of simple electrical devices called elements which interact with one another. Each element has two possible elementstates, with its present state determined from states of other elements and from its previous state by a fixed transformation. Given a ...

COMPUTER ANALYSIS OF PROTECTIVE STRUCTURES FOR PROTECTION FROM NUCLEAR BLAST.

JUN 1965

Authors: Kalman L. Benuska; LIN (T Y) AND ASSOCIATES VAN NUYS CALIF

The report describes the results of an investigation into the most advantageous approach for developing a computer program suitable for making blast analyses of 'box-type' structures. Airblast loadings and ground motions are reviewed. The mathematical formulation for calculating the dynamic response of lumped mass systems is presented. Both the mode-superposition and the step-by-step techniques are described. (Author)

USAF PERT. VOLUME IV, PART I, COST.

JUN 1965

Authors: AIR FORCE SYSTEMS COMMAND WASHINGTON D C

The document is an addendum to a previous report on the computer programming of the Air Force PERT System.

REVIEW, APPLICATION, AND EVALUATION OF COMPUTER METHODS FOR CIRCUIT RELIABILITY ANALYSIS.

21 MAY 1965

Authors: L. H. Stember Jr.; B. C. Spradlin; C. G. Kopp; D. C. Jones; R. N. Pesut; BATTELLE MEMORIAL INST COLUMBUS OHIO COLUMBUS LABS

The objectives of the program are to (1) select a computer technique for reliability analysis of avionic equipment, (2) apply this technique to two avionic equipments, and (3) evaluate the technique to give an indication of its applicability and usefulness, including costs. The results of this program are presented.

The 138 Analog Digital Converter,

20 MAY 1965

Authors: H. Ratchford; STANFORD UNIV CALIF DEPT OF COMPUTER SCIENCE

A discussion of the programming and hardware characteristics of the analog to digital converter on the PDP-1 is given; several sample programs are also presented. (Author)

SYSTEM TRADE-OFF STUDY REPORT.

20 MAY 1965

Authors: MARTIN CO DENVER CO

Contains a description of the Interim Model for LPTV system trade-offs. The model was devised, programmed, and applied to 30 vehicle-base combinations during the period 1 April to 29 April 1965. The Interim Model was created to allow experimentation with the best form for the final LPTV trade-off model. But, it has also been used successfully to assist in ranking vehicle-base combinations. In addition to describing the model, the present ...