99,613 research outputs found

    Towards an Interaction-based Integration of MKM Services into End-User Applications

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    The Semantic Alliance (SAlly) Framework, first presented at MKM 2012, allows integration of Mathematical Knowledge Management services into typical applications and end-user workflows. From an architecture allowing invasion of spreadsheet programs, it grew into a middle-ware connecting spreadsheet, CAD, text and image processing environments with MKM services. The architecture presented in the original paper proved to be quite resilient as it is still used today with only minor changes. This paper explores extensibility challenges we have encountered in the process of developing new services and maintaining the plugins invading end-user applications. After an analysis of the underlying problems, I present an augmented version of the SAlly architecture that addresses these issues and opens new opportunities for document type agnostic MKM services.Comment: 14 pages, 7 figure

    A computer aided design system with parametric dimensioning : a thesis presented in partial fulfilment of the requirements for the degree of Master of Philosophy in Industrial Technology at Massey University

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    This thesis develops the concept of a parametrically dimensioned CAD system. Conventional CAD systems require the actual dimensions of all objects drawn to be defined during the drawing process. To alter any dimension requires manual modification of all affected objects in the drawing. Parametrically dimensioned CAD systems would allow drawings to be constructed containing dimensions defined using variable parameters. These parametric drawings could then be fully specified at some later stage by supplying actual values for the parameters. Such systems would allow drawings of families of components (that varied only in their dimensions) to be easily produced from a single parametric drawing, would simplify dimensional modifications to drawings, and would permit the drawing production to be part of an automated design process. The general requirements for such a parametric CAD system are developed in the thesis and the implementation of a limited package based on these ideas is described. On the basis of this work, it has been concluded that such systems are viable, could have successful user interfaces and would be a valuable extension to conventional CAD packages

    Generic unified modelling process for developing semantically rich, dynamic and temporal models

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    Models play a vital role in supporting a range of activities in numerous domains. We rely on models to support the design, visualisation, analysis and representation of parts of the world around us, and as such significant research effort has been invested into numerous areas of modelling; including support for model semantics, dynamic states and behaviour, temporal data storage and visualisation. Whilst these efforts have increased our capabilities and allowed us to create increasingly powerful software-based models, the process of developing models, supporting tools and /or data structures remains difficult, expensive and error-prone. In this paper we define from literature the key factors in assessing a model’s quality and usefulness: semantic richness, support for dynamic states and object behaviour, temporal data storage and visualisation. We also identify a number of shortcomings in both existing modelling standards and model development processes and propose a unified generic process to guide users through the development of semantically rich, dynamic and temporal models

    On-line transformer condition monitoring through diagnostics and anomaly detection

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    This paper describes the end-to-end components of an on-line system for diagnostics and anomaly detection. The system provides condition monitoring capabilities for two in- service transmission transformers in the UK. These transformers are nearing the end of their design life, and it is hoped that intensive monitoring will enable them to stay in service for longer. The paper discusses the requirements on a system for interpreting data from the sensors installed on site, as well as describing the operation of specific diagnostic and anomaly detection techniques employed. The system is deployed on a substation computer, collecting and interpreting site data on-line

    Information hiding through variance of the parametric orientation underlying a B-rep face

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    Watermarking technologies have been proposed for many different,types of digital media. However, to this date, no viable watermarking techniques have yet emerged for the high value B-rep (i.e. Boundary Representation) models used in 3D mechanical CAD systems. In this paper, the authors propose a new approach (PO-Watermarking) that subtly changes a model's geometric representation to incorporate a 'transparent' signature. This scheme enables software applications to create fragile, or robust watermarks without changing the size of the file, or shape of the CAD model. Also discussed is the amount of information the proposed method could transparently embed into a B-rep model. The results presented demonstrate the embedding and retrieval of text strings and investigate the robustness of the approach after a variety of transformation and modifications have been carried out on the data
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