Symbolic reduction of block diagrams using FORMAC

Two computer programs - one written in FORMAC to generate the desired symbolic expressions, the other in FORTRAN 4 to numerically evaluate the expressions are announced. The FORTRAN program accepts the symbolic punched output from the FORMAC program in either unexpanded or expanded form. It numerically evaluates the expressions

Applications of symbolic computing methods to the dynamic analysis of large systems

Since the symbolic computing language is very well suited to the operations with algebraic equations, techniques use the transfer function concept as a tool for the analysis of large linear dynamic systems. Techniques were coded in the experimental symbolic computer language FORMAC. The first of these approaches, REDUCE 1, establishes the techniques and a computer program to symbolically reduce arbitrary block diagrams associated with large systems for desired transfer functions. Symbolic closed form solutions are determined in several forms including an expanded form in terms of the driving frequencies and system constants. Programs are also written to numerically evaluate the symbolic solutions. A second computer program, REDUCE 2, is also based on the use of symbolic computing methods and was written to accommodate large engineering systems

HICOV - Newton-Raphson calculus of variation with automatic transversalities

Computer program generates trajectories that are optimum with respect to payload placed in an earth orbit. It uses a subroutine package which produces the terminal and transversality conditions and their partial derivatives. This program is written in FORTRAN 4 and FORMAC for the IBM 7094 computer

Symbolic-numeric interface: A review

A survey of the use of a combination of symbolic and numerical calculations is presented. Symbolic calculations primarily refer to the computer processing of procedures from classical algebra, analysis, and calculus. Numerical calculations refer to both numerical mathematics research and scientific computation. This survey is intended to point out a large number of problem areas where a cooperation of symbolic and numerical methods is likely to bear many fruits. These areas include such classical operations as differentiation and integration, such diverse activities as function approximations and qualitative analysis, and such contemporary topics as finite element calculations and computation complexity. It is contended that other less obvious topics such as the fast Fourier transform, linear algebra, nonlinear analysis and error analysis would also benefit from a synergistic approach

Computer program to generate attitude error equations for a gimballed platform

Computer program for solving attitude error equations related to gimballed platform is described. Program generates matrix elements of attitude error equations when initial matrices and trigonometric identities have been defined. Program is written for IBM 360 computer

Computer algebra application for classification of integrable non-linear evolution equations

The application of computer algebra for classification of integrable non-linear evolution equations is discussed. Algorithms for testing conditions of formal integrability, to calculate the Lie-Bäcklund symmetries and conservation law densities are developed and implemented on the basis of the computer algebra system PL/FORMAC

Computer programs: Special applications. A compilation

Computer programs are reported of technological developments in: management techniques, measurements and testing programs, and navigation and tracking programs. Machine requirements, program language, and the reporting source are included for the dissemination of information

Relatório de atividade profissional

Relatório de estágio do mestrado em Engenharia de InformáticaEste relatório resume o meu percurso profissional centrado em funções de Direcção Técnica, Gestão de Projectos, Consultoria e Formação em Tecnologias e Sistemas de Informação, apresentado para efeitos de obtenção do Mestrado em Engenharia Informática, de acordo com o Despacho RT-38/2011, de 21 de Junho. A minha experiência centrou-se nas a áreas de infra-estrutura, tecnologia e plataformas de TI, com um grande ênfase na prestação de serviçs de desenho, implementação, operação e manutenção de serviços Internet e Intranet. Entre as entidades empregadoras (directa ou indirectamente) encontram-se Universidades, Empresas Tecnológicas e de Marketing, Bancos, Instituições Governamentais, entre outras. A nível pessoal, tive ainda a oportunidade de publicar duas obras técnicas, sobre serviços de TI open-source

Proceedings of the 1968 Summer Institute on Symbolic Mathematical Computation

Investigating symbolic mathematical computation using PL/1 FORMAC batch system and Scope FORMAC interactive syste