6 research outputs found

    Numerical and Experimental Determination of Canard Controlled Missile Aerodynamic Coefficients in Subsonic Regime

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    This paper discusses the computational and experimental approach to the determination of aerodynamic coefficients of canard controlled missile with wrap around tail fin. The paper presents results of subsonic flow at Mach 0.4. Angle of attack of the missile is varied from −10 to +10 degrees with an increment of 2 degrees. Canard deflection in the pitch plane is also varied at 0, 10, and 15 degrees. The results of the simulation are compared with the experimental data obtained by the wind tunnel measurements. Measured results confirm applicability of Spalart Allmaras turbulence model with adapted computational mesh to the determination of aerodynamic coefficients for canard controlled missiles

    Towards Numerical Architectural Order Identification: Expressing Capital Morphology by Using Dynamics of Its Parameters

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    Previous subject-related research, that describes stylistic peculiarities of artefacts by taking into account their morphometric/geometric characteristics, explicates the results (used to differentiate them in terms of style they belong to) mainly descriptively – by evaluating the obtained data visually. The narrower aim of this Paper is to explicate the mentioned characteristics numerically/quantitatively by transposing stylistic-wise parameters (descriptors of fractal and non-fractal nature), previously investigated by the actual authors, into the form of dynamics of their values namely explicators. Therefore, the main research questions of this study are both how to express artefact morphology by using dynamics of its parameters and, thus, how to numerically/quantitatively identify architectural style concrete artefact belongs to. To achieve that scientifically, a triplet of capital samples (as the most distinctive elements among artefacts), namely their digital 3D models, are employed per each fundamental classical architectural order (Doric, Ionic, and Corinthian). The subject of this Paper is to establish relevant morphometric/geometric indicators not only in the form of explicators mentioned above, but qualifiers too, enabling so: to numerically express capital morphology, namely to quantitatively estimate levels of intra-similarity of capitals assumed to belong to the same order, and inter-dissimilarity of those assumed to belong to different ones. Both types of the established indicators refer to capital contours which are positioned in mutually equidistant transverse section planes (defined per each chosen capital sample of each of the analysed orders). The wider research aim refers to both: (a) a possibility to numerically/quantitatively identify order a concrete fragment of capital/artefact belongs to in terms of recognising it computationally (as confidently as possible from the mathematical probability point of view), and (b) to perform morphology-wise capital/artefact segmentation. Presented innovative methodology brings up a more reliable possibility to identify architectural order “stylistically unknown capital” belongs to – by using a newly introduced indicator (in the form of dynamics) to express its morphology numerically/quantitatively. Future research will be dealt with software-wise automation of stylistic decoding steps (rough capital classification and order-belonging estimation)

    On the Other Side of Mirror – A Workshop on Incorporating Geometry of Mirroring in Architectural Practice and Applied Arts

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    The magic world of mirrors, their application, integration in interiors and exposure in exteriors, intrigues architectural designers and artists for a long time. Inspired with wide recent usages of mirrors in innovative architectural designs practice, as well as in arts, and grounded our understanding on well-known geometric/optic principles of mirroring, the authors conceptualized a Workshop that was offered to students of architecture, forestry and applied arts, as an extracurricular two-weeks activity. After briefly introducing a historical/chronological overview of mirrors application in architectural design practice and applied art, relevant theoretical aspects of mirroring were demonstrated on the Workshop. The participating students were offered two possibilities for integration of mirrors in their design-outcomes: to experiment with analogue models and digital/computing ones. For that reason, a large amount of small glass mirror parts was provided. Also, functional parametric families of digital mirrors (planar, concave and convex) were developed especially for the workshop and offered on-line. Particular foci of this paper are on both: the teaching methodology that was exclusively prepared for the Workshop, and specific usage of experimentation (to trigger unusual ideas and to utilize relevant familiar methods and procedural activities in the new – this context). In the discussion part of this study, a systematized overview of the Workshop results and its analysis from geometric and semantic point of view are given. The results are divided into: first interim critique, second interim critique and final submission. Through a generalization of conclusions, the lessons learned, namely, the level of subject-related geometric knowledge acquired from this unique teaching experience are reviewed, and an analysis of their possible applications in other pedagogic contexts related to geometry-teaching is presented

    ConservePlants: An integrated approach to conservation of threatened plants for the 21st Century

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    Even though plants represent an essential part of our lives offering exploitational, supporting and cultural services, we know very little about the biology of the rarest and most threatened plant species, and even less about their conservation status. Rapid changes in the environment and climate, today more pronounced than ever, affect their fitness and distribution causing rapid species declines, sometimes even before they had been discovered. Despite the high goals set by conservationists to protect native plants from further degradation and extinction, the initiatives for the conservation of threatened species in Europe are scattered and have not yielded the desired results. The main aim of this Action is to improve plant conservation in Europe through the establishment of a network of scientists and other stakeholders who deal with different aspects of plant conservation, from plant taxonomy, ecology, conservation genetics, conservation physiology and reproductive biology to protected area's managers, not forgetting social scientists, who are crucial when dealing with the general public. in situ plant conservation, ex situ plant conservation, conservation genetics, red lists of threatened plant species, citizen scienc

    ConservePlants: An integrated approach to conservation of threatened plants for the 21st Century

    Get PDF
    Even though plants represent an essential part of our lives offering exploitational, supporting and cultural services, we know very little about the biology of the rarest and most threatened plant species, and even less about their conservation status. Rapid changes in the environment and climate, today more pronounced than ever, affect their fitness and distribution causing rapid species declines, sometimes even before they had been discovered. Despite the high goals set by conservationists to protect native plants from further degradation and extinction, the initiatives for the conservation of threatened species in Europe are scattered and have not yielded the desired results. The main aim of this Action is to improve plant conservation in Europe through the establishment of a network of scientists and other stakeholders who deal with different aspects of plant conservation, from plant taxonomy, ecology, conservation genetics, conservation physiology and reproductive biology to protected area's managers, not forgetting social scientists, who are crucial when dealing with the general public. in situ plant conservation, ex situ plant conservation, conservation genetics, red lists of threatened plant species, citizen scienc

    ConservePlants : an integrated approach to conservation of threatened plants for the 21st century

    Get PDF
    Even though plants represent an essential part of our lives offering exploitational, supporting and cultural services, we know very little about the biology of the rarest and most threatened plant species, and even less about their conservation status. Rapid changes in the environment and climate, today more pronounced than ever, affect their fitness and distribution causing rapid species declines, sometimes even before they had been discovered. Despite the high goals set by conservationists to protect native plants from further degradation and extinction, the initiatives for the conservation of threatened species in Europe are scattered and have not yielded the desired results. The main aim of this Action is to improve plant conservation in Europe through the establishment of a network of scientists and other stakeholders who deal with different aspects of plant conservation, from plant taxonomy, ecology, conservation genetics, conservation physiology and reproductive biology to protected area's managers, not forgetting social scientists, who are crucial when dealing with the general public.peer-reviewe
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