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Construction of a support tool for the design of the activity structures based computer system architectures
This thesis was submitted for the degree of Doctor of Philosophy and was awarded by Brunel University.This thesis is a reapproachment of diverse design concepts, brought to bear upon the computer system
engineering problem of identification and control of highly constrained multiprocessing (HCM)
computer machines. It contributes to the area of meta/general systems methodology, and brings
a new insight into the design formalisms, and results afforded by bringing together various design
concepts that can be used for the construction of highly constrained computer system architectures.
A unique point of view is taken by assuming the process of identification and control of HCM
computer systems to be the process generated by the Activity Structures Methodology (ASM).
The research in ASM has emerged from the Neuroscience research, aiming at providing the
techniques for combining the diverse knowledge sources that capture the 'deep knowledge' of this
application field in an effective formal and computer representable form. To apply the ASM design
guidelines in the realm of the distributed computer system design, we provide new design definitions
for the identification and control of such machines in terms of realisations. These realisation definitions
characterise the various classes of the identification and control problem. The classes covered
consist of:
1. the identification of the designer activities,
2. the identification and control of the machine's distributed structures of behaviour,
3. the identification and control of the conversational environment activities (i.e. the randomised/
adaptive activities and interactions of both the user and the machine environments),
4. the identification and control of the substrata needed for the realisation of the machine, and
5. the identification of the admissible design data, both user-oriented and machineoriented,
that can force the conversational environment to act in a self-regulating
manner.
All extent results are considered in this context, allowing the development of both necessary
conditions for machine identification in terms of their distributed behaviours as well as the substrata
structures of the unknown machine and sufficient conditions in terms of experiments on the unknown
machine to achieve the self-regulation behaviour.
We provide a detailed description of the design and implementation of the support software tool
which can be used for aiding the process of constructing effective, HCM computer systems, based
on various classes of identification and control. The design data of a highly constrained system, the
NUKE, are used to verify the tool logic as well as the various identification and control procedures.
Possible extensions as well as future work implied by the results are considered.Government of Ira
Arquitetura da informação : uma proposta para fundamentação e caracterização da disciplina científica
Tese (doutorado)—Universidade de Brasília, Faculdade de Ciência da Informação, 2012.Apresenta uma proposta para definição da Arquitetura da Informação como disciplina científica de fundamentação filosófica e implicações tecnológicas práticas. Identifica o hiato existente entre as práticas da Arquitetura da Informação e de um modelo teórico, tanto de natureza filosófica quanto científica, que a sustente. Realiza uma revisão bibliográfica sobre as relações entre a Arquitetura da Informação e seus fundamentos epistemológicos, suas relações com a Ciência da Informação e a possibilidade de executar uma redução teórica da Arquitetura da Informação aos modelos da Ciência da Informação. Com base na revisão da literatura, argumenta sobre a inexistência de um fundamento filosófico que sustente as atuais práticas da arquitetura da informação. Para fundamentar a construção de uma disciplina cientifica de Arquitetura da Informação, realiza uma revisão sobre a Filosofia da Ciência e busca identificar critérios de caracterização da prática científica. Como resultados esta tese propõe as bases filosóficas, as científicas e as tecnológicas da disciplina de Arquitetura da Informação. Propõe uma postulação filosófica para uma ontologia, uma fenomenologia e uma epistemologia para a Arquitetura da Informação de modo a caracterizar um universo de discurso que permita a delimitação do campo científico da disciplina. Assume um conceito de Ciência, identifica critérios para caracterização da Arquitetura da Informação como disciplina científica e apresenta as categorias da Manifestação, da Forma, do Contexto e do Significado como categorias fundamentais, situadas no contexto filosófico construído, para a prática científica da Arquitetura da Informação. Apresenta um modelo referencial de uma Teoria Geral da Arquitetura da Informação e uma estrutura de aplicação deste modelo. Com base na fundamentação científica desenvolvida, apresenta um conjunto de princípios tecnológicos que norteiam a prática da Arquitetura da Informação na construção de soluções e caracteriza uma fundamentação tecnológica para a disciplina. _________________________________________________________________________________ ABSTRACTPresents a proposal for defining the Architecture of Information as a scientific discipline with have philosophical and technological foundations too. Identifies the gap between the current practices of Information Architecture and a related theoretical model to sustain it. Reviews the literature on the relationship between Information Architecture and its epistemological foundations; its relations with the Information Science and the possibility to perform a theoretical reduction of the Architecture of Information models into the Information Science one. Based on the literature review, argues about the lack of a philosophical foundation that supports the currents practices of Information Architecture. To support the construction of a scientific discipline of Architecture of Information, conducts a review of the philosophy of science and seeks to identify criteria for characterization of scientific practice. As a result this thesis proposes the philosophical, scientific and technological foundations to the discipline of Architecture of Information. It proposes a philosophical postulation for ontology, derives a phenomenology and an epistemology for Information Architecture in order to characterize a universe of discourse that allows the delimitation of the field of scientific discipline. Assume a concept of Science identifies criteria for definition of Architecture of Information as a scientific discipline and provides the categories of Manifestation, Form, Context and Meaning as fundamental categories, situated in the philosophical context built to the scientific practice of Architecture of Information. Presents a reference model of a General Theory of Architecture of Information and explains a framework for implementing this model. Based on the scientific foundation developed presents a set of technological principles that guide the practice of Information Architecture in building solutions and features a technological foundation for discipline