5,873 research outputs found

    Key pedagogical thinkers: Maria CecĆ­lia Calani Baranauskas

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    M. Cecilia C. Baranauskas is a Brazilian Professor and researcher in Human-Computer Interaction (HCI) at the University of Campinas (UNICAMP). She received the ACM Rigo Award (2010) for her lifetime contribution to the Design of Communication field, and became an Honorary Research Fellow at Staffordshire University (UK) in 2001 and a Visiting Fellow at the University of Reading (UK). She is one of the authors of the very first book of HCI in Portuguese, has led several projects in the context of e-Citizenship and e-Inclusion, and has advised more than forty Masters dissertations and PhD theses. Her research interests have focused on HCI issues, particularly investigating different formalisms (including Organizational Semiotics and Participatory Design) in the analysis, design and evaluation of societal systems

    Genetic Algorithm Optimisation for Finance and Investments

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    This paper provides an introduction to the use of genetic algorithms for financial optimisation. The aim is to give the reader a basic understanding of the computational aspects of these algorithms and how they can be applied to decision making in finance and investment. Genetic algorithms are especially suitable for complex problems characterised by large solution spaces, multiple optima, nondifferentiability of the objective function, and other irregular features. The mechanics of constructing and using a genetic algorithm for optimisation are illustrated through a simple example

    Genetic Algorithm Optimisation for Finance and Investments

    Get PDF
    This paper provides an introduction to the use of genetic algorithms for financial optimisation. The aim is to give the reader a basic understanding of the computational aspects of these algorithms and how they can be applied to decision making in finance and investment. Genetic algorithms are especially suitable for complex problems characterised by large solution spaces, multiple optima, nondifferentiability of the objective function, and other irregular features. The mechanics of constructing and using a genetic algorithm for optimisation are illustrated through a simple example

    InGaN epilayer characterization by microfocused x-ray reciprocal space mapping

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    We report the use of microfocused three-dimensional x-ray reciprocal space mapping to study InGaN epilayers with average InN content 20%-22%. Analysis of the full volume of reciprocal space, while probing samples on the microscale with a focused x-ray beam, allowed us to gain valuable information about the nanostructure of InN-rich InGaN epilayers. It is found that ā€œseedā€ InGaN mosaic nanocrystallites are twisted with respect to the ensemble average and strain-free. The initial stages of InGaN-on-GaN epitaxial growth, therefore, conform to the Volmer-Weber growth mechanism with ā€œseedsā€ nucleated on strain fields generated by the a-type edge dislocations

    SELECTION AND ANALYSIS OF ENGINE OF FSAE 2010

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    The objective of this project is to study, select and analyze the engine. This report includes introduction, literature review, methodology, result and discussions, and conclusion. The scope of study includes the usage of computer aided engineering software for the modeling and analysis purposes of the project. Theoretical calculations will also be carried out to compare the results with reality. In the literature review there will be a simple and basic explanation on engine and controllers, the specifications for Honda CBR 600 F4i, Yamaha FZ6 S2 and Aprilia SXV engines, the analysis of turbocharging small engines. The methodology section will consists of the project methodology which gives an outline of the activities taking place and also the Gantt chart which gives the milestone period for each activity. The comparison and analysis of the engines will be discussed in the result and discussion section

    Analytic solitary waves of nonintegrable equations

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    Even if it is nonintegrable, a differential equation may nevertheless admit particular solutions which are globally analytic. On the example of the dynamical system of Kuramoto and Sivashinsky, which is generically chaotic and presents a high physical interest, we review various methods, all based on the structure of singularities, allowing us to characterize the analytic solution which depends on the largest possible number of constants of integration.Comment: LaTex 2e. To appear, Physica

    Pain, Injury, Mortality: Police Confront Critical Incidents

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    Previous research has shown that the law enforcement occupation is a dangerous profession that has the highest violent victimization rate in the United States (Fridell, Faggiani, Taylor, Brito, & Kubu, 2009). This descriptive study aims to add to the growing body of literature on victimization of police officers by answering the central research question: What are the characteristics of victimization incidents of on-duty law enforcement officers? Specific demographics of interest include; sex of the officer, method of harm used against the officer, incident location, and responding call type. A content analysis was performed on news articles reporting incidents of on-duty law enforcement fatalities and injuries (n=50), in which characters gathered from the articles were recoded to numbers for quantitative analysis. Analysis of data suggests that male officers are more likely to be victimized while on-duty. Gunfire is the method of harm most likely used to victimize officers. A roadway is the location where an incident of victimization will most likely occur, during other types of calls beyond warrant services, traffic stops, domestic disturbances, and suspicious persons. This research can lead to future more detailed research and causal analysis

    Mineral Fibres

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    In the last decades, there has been increasing interest in Naturally Occurring Asbestos (NOA) and asbestos containing materials (ACMs) as a source of possible environmental risk. A crucial theme of interest related to environmental pollution is the enhanced mobilization of asbestos minerals affecting soils and rocks due to human activities (e.g., road construction, mining activity) in comparison with natural weathering processes. The volume has aimed to gather contributions and to compare results derived from various experiences of research groups regarding NOA minerals as a source of possible environmental risks for population. Case studies from various geological contexts are presented. Moreover, contributions presenting novel and classical approaches for ACM inertization and recycling, together with possible solutions for reducing asbestos exposure, has been also presented
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