De Montfort University Open Research Archive

    Acaso e arte computacional: Tensões entre irregularidade e ordem

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    This text deals with the role of chance in a theoretical manner, presents some images produced computationally from a set of algorithms that rely on chance. It also introduces, briefly, the production of the art group [+zero] (www.maiszero.org), composed of four Brazilian artists and researchers who create computer art from indeterminate situations based on the philosophical concept of play

    Digital image manipulation: an interdisciplinary approach.

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    Image manipulation programs allow users to retouch drawings or photographs. Using these tools for artistic image manipulation is a demanding task. In this paper we present a novel methodology, based on efficient image processing algorithms in combination with Cellular Automata, to create a very versatile and autonomous means for altering digital images. The system presents a newly achieved level of autonomous creativity in addition to minimising the effort for retouching images from an artistic point of view. We present an evaluation of an experimental implementation of our method and provide suggestions for its applicability

    Human in the Loop

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    The file attached to this record is the author's final peer reviewed version. The Publisher's final version can be found by following the DOI link.This is a comment on the paper by Siponen and Klaarvuniemi concerning the natural sciences

    Stakeholder Views of the Factors Affecting the Commercialization of Aviation Biofuels in Europe

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    Biofuels are being advocated by certain sections of the commercial aviation industry as a means of reducing greenhouse gas emissions and lowering fossil-fuel dependency within the confines of current aircraft technology and infrastructure. Rising oil prices, increasingly stringent environmental legislation, and continued growth in air travel demand have stimulated the development of renewable lower-carbon fuel alternatives that can act as a substitute for conventional Jet A1 kerosene. However, although biofuels may offer a number of apparent benefits, barriers to widespread commercial uptake and deployment remain, including concerns about competition for feedstocks and impact on global water resources and biodiversity. The processes involved in the uptake of aviation-grade biofuels are not straightforward and there is a need to explore the factors affecting commercial deployment. This paper reports on the findings of a series of in-depth semistructured interviews with key aviation stakeholders in Europe. The research reveals that concerns about the supply of suitable feedstocks, uncertainty surrounding the true life-cycle emissions savings of the fuels, and the perceived lack of policy support are key obstacles that need to be addressed before aviation biofuels can be widely utilized. The research also reveals that the potential inclusion of aviation within the EU Emissions Trading Scheme will create a zero accounting “loophole” for biofuel that may uniquely influence the pattern of uptake in the EU vis-à-vis other world markets. Additional key constraints identified include limitations on the supply of suitable feedstocks, concerns about sustainability of the fuels, and uncertain policy support

    The Drivers of Product Innovation in Africa

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    African firms have made some significant progress in product innovation through human capital development and firm competitiveness. However, these firms need to continuously focus on talent hunting and development as well as strategic collaborations to reap the full benefit of product innovation

    Within-cluster proximity and output efficiency of R&D in the space industry

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    The file attached to this record is the author's final peer reviewed version. The Publisher's final version can be found by following the DOI link.Dynamic slacks-based data envelopment analysis is applied to measure output performance efficiency of space R&D active private firms. Fractional logit panel analysis is used to identify associations between this firm level R&D output efficiency and space industry level R&D specialisation, presence of anchor firms, and public R&D capacity within geographical clusters. Primary data collected for the entire population of space R&D active firms in Belgium for the period 2011–2015 reveals that an environment specialized in the focus firm's space activities exerts a positive influence on R&D output efficiency. The public space R&D capacity and the presence of space anchor firms within the cluster do not influence R&D output efficiency. Firm age, a mixture of space and non-space R&D, and larger amounts of public funding positively affect R&D output efficiency. These findings should be seen in a context of a space industry dominated by SMEs and in a five year time-span

    A Novel Principle to Validate Digital Forensic Models

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    The file attached to this record is the author's final peer reviewed version. The Publisher's final version can be found by following the DOI link.Digital forensic models (DFMs) form the base for any digital investigation because they guide the investigators with necessary steps and procedures to be taken during the investigation. State-of-the-art DFMs assume that it is safe to proceed from one stage of the investigation to the next without taking into account the anti-forensic techniques that could be used to defeat the investigation process.However, the findings in the literature shows that common phases in the digital forensic process such as acquisition, examination, analysis, and reporting are affected by various anti- forensic (AF) methods.To fill this gap, we propose an abstract digital forensic framework and validate DFMs by factoring in AF techniques affecting various phases in a digital forensic process. This validation principle can be used to enhance state-of-the-art DFMs to enable principled detection and countering of AF techniques before being applied to a real-time investigation case

    Switching Kalman filter for failure prognostic

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