80 research outputs found

    Challenges with bearings only tracking for missile guidance systems and how to cope with them.

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    This paper addresses the problem of closed loop missile guidance using bearings and target angular extent information. Comparison is performed between particle filtering methods and derivative free methods. The extent information characterizes target size and we show how this can help compensate for observability problems. We demonstrate that exploiting angular extent information improves filter estimation accuracy. The performance of the filters has been studied over a testing scenario with a static target, with respect to accuracy, sensitivity to perturbations in initial conditions and in different seeker modes (active, passive and semi-active)

    Pan-European entrepreneurial summer academies with impact: The case of STARTIFY7

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    © 2017 by Emerald Publishing Limited.Entrepreneurship is viewed as essential to the future prosperity of Europe and creating societies that are socially and economically inclusive. The information communication technology (ICT) sector has been identified as an area of great entrepreneurial potential for Europe and yet the continent struggles to create global leaders in the digital startup space. In response to this challenge, the European Commission launched its Entrepreneurship 2020 Action Plan to stimulate and support young people to become entrepreneurs and exploit the potential of ICT, in terms developing new digital products and services. This chapter reports on a project to develop and deliver a series of pan-European summer academies for entrepreneurship training funded by Horizon 2020. The chapter details the process of developing the academies and offer reflections on the impacts of the project

    Distinguishing micro-businesses from SMEs: a systematic review of growth constraints

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    Purpose – Micro-businesses account for a large majority of Small and Medium Enterprises (SMEs). However, they remain comparatively under-researched. This paper seeks to take stock of the extant literature on growth challenges, and to distinguish the growth constraints facing micro-business as a specific subset of SMEs from those facing larger SMEs. Design/methodology/approach – The study consists of a systematic review of 59 peer-reviewed articles on SME growth. Findings – Micro-businesses distinguish themselves from larger SMEs by being owner-manager entrepreneur (OME) centric and are constrained by a tendency to be growth-averse, underdeveloped capabilities in key business areas, underdeveloped OME capabilities, and often inadequate business support provision. Research limitations/implications – The use of keywords, search strings, and specific databases may have limited the number of papers identified as relevant by the review. However, the findings are valuable for understanding micro-businesses as a subset of SMEs, providing directions for future research and generating implications for policy to support the scaling up of micro-businesses. Originality/value – The review provides a renewed foundation for academic analysis of micro-business growth, highlighting how micro-businesses are distinct from larger SMEs. At present, no systematic literature review on this topic has previously been published and the study develops a number of theoretical and policy implications

    The nature of corruption affecting entrepreneurship in transition economies: some lessons from Montenegro

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    The aim of this paper is to examine how the institutional environment impacts the nature of corruption affecting entrepreneurship in transition economies. Drawing on a survey and in-depth interviews with entrepreneurs in Montenegro, the paper finds that corruption is a pervasive presence which has not been ameliorated despite economic reforms. Montenegro is a transition economy which has made significant strides in terms of creating a more open market economy. However, reforms have often overlooked corruption which remains prevalent, and the institutional environment has left space for officials and entrepreneurs to engage in corrupt practices. The paper shows that although it takes different forms, corruption can be viewed as a cultural impediment even if the majority of entrepreneurs are not exposed to it

    Hidden clusters: the articulation of agglomeration in City Regions

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    For many years, local economic development has been driven by the desire to maintain, attract and nurture clusters of economic activity in targeted industrial sectors. However, where clusters are not conventionally sector-based, public policy needs to develop alternative approaches to leverage the economic benefits and realise competitive advantage. Drawing on a study of the Sheffield City Region (SCR), the paper explores the challenge of leveraging ‘hidden’ cross-sectoral clusters, which do not fit dominant discourses of agglomeration-led growth. We posit that it is the cross-sectoral connections and networks in the SCR which represent its key strength, yet these are only partially reflected by current place marketing and policy considerations, and, in many ways, are overlooked and thus remain ‘hidden’. The paper argues that the competitive advantage of the SCR is undermined when it characterises clusters in terms of industrial sectors, and instead needs to articulate its strengths as a strategically important industrial centre. The paper concludes by drawing out a number of implications for academic theory and policy development

    Social learning in LEADER: Exogenous, endogenous and hybrid evaluation in rural development

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    This paper considers the relationship between the centralised exogenous, institutions and the embedded, endogenous institutions of rural governance in Europe through an examination the evaluation procedures of the European LEADER programme. LEADER is presented in the literature as progressive in terms of innovation and stakeholder engagement. Yet while the planning and management of LEADER embraces heterogeneity and participation, programmatic evaluation is centralised and held at arms length from delivery organisations. The paper reviews previous efforts to improve evaluation in LEADER and considers alternative strategies for evaluation, contrasting LEADER practice with participatory evaluation methodologies in the wider international context. Can evaluation in itself be valuable as a mode of social learning and hence a driver for endogenous development in rural communities in Europe? The paper concludes by examining the challenges in producing a hybrid form of evaluation which accommodates endogenous and exogenous values

    The Impact of Entrepreneurship Education in Higher Education: A Systematic Review and Research Agenda

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    Using a teaching model framework, we systematically review empirical evidence on the impact of entrepreneurship education (EE) in higher education on a range of entrepreneurial outcomes, analyzing 159 published articles from 2004 to 2016. The teaching model framework allows us for the first time to start rigorously examining relationships between pedagogical methods and specific outcomes. Reconfirming past reviews and meta-analyses, we find that EE impact research still predominantly focuses on short-term and subjective outcome measures and tends to severely underdescribe the actual pedagogies being tested. Moreover, we use our review to provide an up-to-date and empirically rooted call for less obvious, yet greatly promising, new or underemphasized directions for future research on the impact of university-based entrepreneurship education. This includes, for example, the use of novel impact indicators related to emotion and mind-set, focus on the impact indicators related to the intention-to-behavior transition, and exploring the reasons for some contradictory findings in impact studies including person-, context-, and pedagogical model-specific moderator

    Particle Learning Methods for State and Parameter Estimation

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    This paper presents an approach for online parameter estimation within particle lters. Current research has mainly been focused towards the estimation of static parameters. However, in scenarios of target maneuver- ability, it is often necessary to update the parameters of the model to meet the changing conditions of the target. The novel aspect of the proposed approach lies in the estimation of non-static parameters which change at some unknown point in time. Our parameter estimation is updated using changepoint analysis, where a changepoint is identied when a signicant change occurs in the observations of the system, such as changes in direction or velocity
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