Obtaining high-quality 3D models of real world objects is an important task in computer vision. A very promising approach to achieve this is given by variational range image integration methods: They are able to deal ...
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We report a comprehensive study of dc susceptibility, specific-heat, neutron-diffraction, and inelastic neutron-scattering measurements on polycrystalline Ba3(Cr1−xVx)2O8 samples, where x=0, 0.06, 0.15, and 0.53. A Ja...
We report a comprehensive study of dc susceptibility, specific-heat, neutron-diffraction, and inelastic neutron-scattering measurements on polycrystalline Ba3(Cr1−xVx)2O8 samples, where x=0, 0.06, 0.15, and 0.53. A Jahn-Teller structure transition occurs for x=0, 0.06, and 0.15 samples, and the transition temperature is reduced upon vanadium substitution from 70(2) K at x=0 to 60(2) K at x=0.06 and 0.15. The structure becomes less distorted as x increases, and such transition disappears at x=0.53. The observed magnetic excitation spectrum indicates that the singlet ground state remains unaltered and spin-gap energy Δ=1.3(1) meV is identical within the instrument resolution for all x. In addition, the dispersion bandwidth W decreases with increase of x. At x=0.53, W is reduced to 1.4(1) meV from 2.0(1) meV at x=0.
The growth in size and complexity of scaling applications and the systems on which they run pose challenges in analyzing and improving their overall performance. With metrics coming from thousands or millions of proce...
The growth in size and complexity of scaling applications and the systems on which they run pose challenges in analyzing and improving their overall performance. With metrics coming from thousands or millions of processes, visualization techniques are necessary to make sense of the increasing amount of data. To aid the process of exploration and understanding, we announce the initial release of Boxfish, an extensible tool for manipulating and visualizing data pertaining to application behavior. Combining and visually presenting data and knowledge from multiple domains, such as the application's communication patterns and the hardware's network configuration and routing policies, can yield the insight necessary to discover the underlying causes of observed behavior. Boxfish allows users to query, filter and project data across these domains to create interactive, linked visualizations.
Several challenges can arise during augmented/virtual collaboration. In this paper, we identify and classify some of these challenges from a cognitive infocommunications (CogInfoCom) point of view. The starting point ...
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Several challenges can arise during augmented/virtual collaboration. In this paper, we identify and classify some of these challenges from a cognitive infocommunications (CogInfoCom) point of view. The starting point of our analysis is the VirCA NET application, which was built on the Virtual Collaboration Arena (VirCA) and developed at the MTA SZTAKI. First, we demonstrate how VirCA and VirCA NET belong to the CogInfoCom paradigm and how they are also related to Future Internet. To highlight our ideas in a practical use-case, we identify key features of infocommunication in a collaborative scenario for building industrial production layouts. In the collaborative scenario, factory planning is defined as a multi-stakeholder and multi-domain challenge, which distributed planning teams have to face. Based on the features of VirCA NET and the specifics of the scenario, we outline a list of challenges, some of which are already solved by the system to some extent, and some of which remain to be solved in future work. The challenges are presented in relation to the theoretical background of CogInfoCom engines and CogInfoCom channels, in order to further strengthen the link between augmented/virtual collaboration and the goals of CogInfoCom.
To take up the challenge of global distributed companies, Manufacturing Engineering has to be accomplished in a worldwide collaborative way. Design and development of production processes and their execution are nowad...
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To take up the challenge of global distributed companies, Manufacturing Engineering has to be accomplished in a worldwide collaborative way. Design and development of production processes and their execution are nowadays spread all over the world. To ensure quality standards and to create synergies between spatially distributed entities, distance collaboration tools must be provided to allow cooperation even over large distances. The Virtual Reality (VR) is thereby offering beneficial capabilities to exchange current planning stages, identify problems and solve them cooperatively. This paper introduces a new approach for distance collaboration, which enables users to work in a joint virtual space, nearly as if they were working together in the same place. Therefore two full-immersive CAVE-like systems are interconnected using the VirCA (Virtual Collaboration Arena) platform. The paper describes the requirements of Mechanical Engineers towards distance collaboration tools and the technical challenges solved with the enhanced VirCA framework. This working prototype is one premier application in the field of VR-enhanced spatially distributed collaboration. A typical use case scenario is provided to highlight the interaction and cooperation capabilities offered by VirCA NET.
In terms of the Fuzzy Lyapunov method, this work proposes stability conditions for fuzzy logic control(FLC). Their application for chaotic systems can be approximated by the Tagagi-Sugeno(T-S) fuzzy model. The fuzzy L...
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In terms of the Fuzzy Lyapunov method, this work proposes stability conditions for fuzzy logic control(FLC). Their application for chaotic systems can be approximated by the Tagagi-Sugeno(T-S) fuzzy model. The fuzzy Lyapunov function is defined as a fuzzy blending of quadratic Lyapunov functions. External forces or disturbances are not considered in the controlled systems. In the design controller procedure, a parallel distributed compensation(PDC) scheme is utilized to construct a global FLC by blending all linear local state feedback controllers. The stability criteria are found not only for fuzzy modeling but also for a real chaotic system. Furthermore, this controller design problem can be reduced to a linear matrix inequality(LMI) problem by use of the Schur Complements. Efficient interior-point algorithms are now available in Matlab toolbox to solve this type of problem.
In terms of the Fuzzy Lyapunov method, this work proposes stability conditions for fuzzy logic control (FLC). Their application for chaotic systems can be approximated by the Tagagi-Sugeno (T-S) fuzzy model. The fuzzy...
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In terms of the Fuzzy Lyapunov method, this work proposes stability conditions for fuzzy logic control (FLC). Their application for chaotic systems can be approximated by the Tagagi-Sugeno (T-S) fuzzy model. The fuzzy Lyapunov function is defined as a fuzzy blending of quadratic Lyapunov functions. External forces or disturbances are not considered in the controlled systems. In the design controller procedure, a parallel distributed compensation (PDC) scheme is utilized to construct a global FLC by blending all linear local state feedback controllers. The stability criteria are found not only for fuzzy modeling but also for a real chaotic system. Furthermore, this controller design problem can be reduced to a linear matrix inequality (LMI) problem by use of the Schur Complements. Efficient interior-point algorithms are now available in Matlab toolbox to solve this type of problem.
The growing popularity of 3-D movies has led to the rapid development of numerous affordable consumer 3-D displays. In contrast, the development of technology to generate 3-D content has lagged behind considerably. In...
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(Figure Presented) Studying transformation in a chemical system by considering its energy as a function of coordinates of the system's components provides insight and changes our understanding of this process. Cur...
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A gradient clustering algorithm, based on the nonparametric methodology of statistical kernel estimators, expanded to its complete form, enabling implementation without particular knowledge of the theoretical aspects ...
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