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Corrigendum: Differential geometric analysis of alterations in MH α‐helices

Journal of Computational Chemistry 2013年第32期34卷

作者： B. Hischenhuber H. Havlicek J. Todoric S. Höllrigl‐Binder W. Schreiner B. Knapp Center for Medical Statistics InformaticsIntelligent Systems Section for Biosimulation and Bioinformatics Medical University of ViennaVienna Austria Faculty of Mathematics and GeoinformationInstitute of Discrete Mathematics and Geometry Research Group for Differential Geometry and Geometric Structures Vienna University of TechnologyViennaAustria Laboratory of Gene Regulation and Signal Transduction Departments of Pharmacology and PathologySchool of Medicine University of CaliforniaSan Diego USA Department of Laboratory MedicineMedical University ViennaVienna Austria Faculty of Mathematics and GeoinformationInstitute of Analysis and Scientific Computing Research Group for Mathematical Modelling and Simulation Vienna University of TechnologyVienna Austria Department of StatisticsProtein Informatics Group University of OxfordOxford United Kingdom

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Complex-ω approach versus complex-k approach in description of gain-assisted surface plasmon-polariton propagation along linear chains of metallic nanospheres

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Physical Review B 2011年第11期83卷 115451-115451页

作者： Indika B. Udagedara Ivan D. Rukhlenko Malin Premaratne Advanced Computing and Simulation Laboratory (AχL) Department of Electrical and Computer Systems Engineering Monash University Clayton VIC 3800 Australia

Propagation characteristics of surface plasmon-polaritons (SPPs) in linear chains of metallic nanospheres (LCMNs) can be found from a dispersion equation, by assuming that either frequency or wave number of a SPP is real. In this paper, we present a comparative study of SPP modes corresponding to the two types of complex solutions for an infinitely long LCMN embedded in a gain medium. We show that even though gain predominantly affects the SPP dispersion obtained with real frequency, both solutions result in the same dispersion and attenuation of SPP modes, when Ohmic losses are almost compensated by gain. In this regime, an analytic expression for the propagation length of SPPs exists, and the SPPs’ dispersion is determined by a real equation. We also demonstrate that for a given amount of gain (below the amplification limit of ~1000 cm−1), transversely polarized SPPs attenuate slower than longitudinally polarized SPPs and are, therefore, preferable for the purpose of energy transfer in gain-supplied LCMNs. The transmission windows for SPP modes of different polarizations do not overlap each other, which facilitates realization of LCMN-based plasmonic filters. Our results may prove useful in design optimization of all-optical chips for power-efficient optical supercomputers.

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Propagation of surface plasmon-polaritons in linear chains of metallic nanoparticles embedded in a gain medium

Propagation of surface plasmon-polaritons in linear chains o...

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International Conference on Quantum Electronics (IQEC)

作者： Indika B. Udagedara Ivan D. Rukhlenko Malin Premaratne Advanced Computing and Simulation Laboratory (A-çL) Department of Electrical and Computer Systems Engineering Monash University VIC Australia

We analyze the two different types of complex solutions to the dispersion equation of surface plasmon-polaritons residing in a linear chain of metallic nanoparticles in the presence of gain in the host medium.

ISBN: (纸本)9780977565771

关键词： Dispersion Nanoparticles Equations Mathematical model Plasmons Optical polarization Optical surface waves

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Plasmonic waveguides with resonant-cavity structures for nanophotonics applications

Plasmonic waveguides with resonant-cavity structures for nan...

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International Conference on Quantum Electronics (IQEC)

作者： Asanka Pannipitiya Ivan D. Rukhlenko Malin Premaratne Advanced Computing and Simulation Laboratory (AXL) Department ofElectrical and Computer Systems Engineering Monash University Clayton VIC Australia

We develop approximate analytical models that describe transmission characteristics of plasmonic slot waveguides coupled to resonant-cavity structures. These models provide deeper insight and pave the way for rapid de... 详细信息

ISBN: (纸本)9780977565771

关键词： Optical waveguides Waveguide junctions Couplers Plasmons Optical filters Power transmission lines

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Optimum design of single-core nanowaveguide for surface plasmon polaritons

Optimum design of single-core nanowaveguide for surface plas...

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International Conference on Quantum Electronics (IQEC)

作者： Dayan Handapangoda Malin Premaratne Ivan D. Rukhlenko Advanced Computing and Simulation Laboratory (AxL) Department ofElectrical and Computer Systems Engineering Faculty of Engineering Monash University Clayton VIC Australia

We show that an optimal dielectric cladding thickness exists, at which the losses in a metallic nanowire can be entirely compensated with minimal gain. We also propose design guidelines that ensure strong confinement ... 详细信息

ISBN: (纸本)9780977565771

关键词： Optical surface waves Metals Dielectric losses Surface waves Integrated circuit interconnections Optical pumping

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Relief mapping for urban and natural environments rendering

Relief mapping for urban and natural environments rendering

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Proceedings of the International Convention MIPRO

作者： D. Janković Ž. Mihajlović AVL/AST-Advanced Simulation Technologies Zagreb Croatia Faculty of Electrical Engineering and Computing Department of Electronics Microelectronics Computer Science and Intelligent Systems University of Zagreb Zagreb Croatia

Terrain models typically contain huge amount of data so they are very time consuming for visualization purposes. This especially comes to the forefront when urban environments are included. The main compromise in representation of the complex environments is between achieved quality and time consumption. With the simple texture representation of complex environments we will accomplish fast application, and with the large polygonal meshes, high quality of the rendered scene. In this paper we propose rendering of urban and natural environments using parallax and relief mapping. This approach combines benefits of the rendering of polygonal meshes and texture approach. Thereby, in the proposed approach improved quality on the one side and increased speed on the other side is combined. The applicability of the method is demonstrated trough parallax and relief mapping within the Irrilicht open source graphics engine. The shaders programs were made with the GLSL shader language. As the result, the tests were made to determine the possible usage of parallax and relief mapping in the display of natural and urban environments.

关键词： Rendering (computer graphics) Urban areas Approximation methods Three dimensional displays Graphics processing unit Pixel

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Degree of polarization of Mie scattered stationary partially coherent electromagnetic fields

Degree of polarization of Mie scattered stationary partially...

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International Conference on Quantum Electronics (IQEC)

作者： Madara L. Marasinghe Malin Premaratne David M. Paganin Advanced Computing and Simulation Laboratory (AL) Department of Electrical and Computer Systems Engineering Faculty of Engineering Monash University Clayton VIC Australia School of Physics Faculty of Science Monash University Clayton VIC Australia

The polarization of non-paraxial partially coherent light scattered from nanospheres cannot be described easily. We utilize the degree of polarization to quantify Mie scattered partially coherent light and demonstrate... 详细信息

ISBN: (纸本)9780977565771

关键词： Polarization Lattices Electromagnetic fields Optics Coherence Dielectrics

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About the influence of the atmosphere over the wildfire on the flight dynamics for the helicopter simulator application 36

About the influence of the atmosphere over the wildfire on t...

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36th European Rotorcraft Forum, ERF 2010

作者： Vukovic, D. Slamic, M. Jankovic, S. Vrdoljak, M. Development Equipping and Modernization Department Ministry of Defence Zagreb Croatia Laboratory for Interactive Simulation Systems Faculty of Electrical Engineering and Computing Zagreb Croatia Department of Aeronautical Engineering Faculty of Mechanical Engineering and Naval Architecture Zagreb Croatia

ISBN: (纸本)9781510854765

The scope of this paper is modelling of the atmosphere over the wildfire and analysis of its influence on the helicopter flight dynamics in defined conditions. To achieve realistic simulation of helicopter flight over the wild land fire it is required to take into account the influence of the fire on the atmosphere conditions. The work presented here is in the framework of the project of helicopter simulator for Mi-171Sh, a modernized variant of the Mi-8/17 helicopter, which is used in the Croatian Air Force for both military and civil applications, especially for its specific use for the firefighting purposes. The influence of fire atmosphere environment on rotor aerodynamics and the whole aircraft flight dynamics can be significant. For the flight training device the results for the spread of the fire are not required, but it is necessary to calculate the aerodynamic forces and moments using density and wind in the atmosphere influenced by wildfire. This aerodynamic calculation is applied with many hypotheses. Presented work is oriented to the determination of the influence of the atmosphere over the wildfire on the helicopter performances under the same hypotheses. Because of this reason we are looking for the atmosphere model under the same hypotheses as for the aerodynamic calculation and only problems relevant to the evaluation of the aerodynamic forces and moments will be taken into account. For the investigation of the specific effects it is required to have reliable mathematical models both of the wildfire and helicopter. Aerodynamic model of the rotor based on the blade element theory is analysed with presented model of atmosphere model over the wildfire. Results of influence of atmosphere over the wildfire on helicopter required power in forward flight and available power are also presented. For these analyses a generic example helicopter similar to Mi-8/17 has been used. Visualization aspects of fire and smoke atmosphere for the helicopter simulator proj

关键词： Helicopters

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Computational Modeling Aspects of Photon Transport Equations in Biological Media

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AIP Conference Proceedings 2010年第1期1210卷 87-102页

作者： Chintha C. Handapangoda Malin Premaratne Haroldo T. Hattori aAdvanced Computing and Simulation Laboratory (AXL) Department of Electrical and Computer Systems Engineering Monash University Clayton 3800 Victoria Australia bSchool of ITEE University of New South Wales at the Australian Defence Force Academy Canberra ACT 2600 Australia

This paper presents an overview of modeling light propagation through biological media by solving the photon transport equation. Different variants of the photon transport equation (PTE) are discussed. Several methods for modeling static distributions and the transient response are presented. A discussion on how to mix and match electromagnetic problems with the PTE is also provided.

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Raman Amplification and Tunable Pulse Delays in Silicon Waveguides

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AIP Conference Proceedings 2010年第1期1291卷 88-90页

作者： Ivan D. Rukhlenko Ivan L. Garanovich Malin Premaratne Andrey A. Sukhorukov Govind P. Agrawal aAdvanced Computing and Simulation Laboratory (AχL) Department of Electrical and Computer Systems Engineering Monash University Clayton VIC 3800 Australia bNonlinear Physics Centre Research School of Physics and Engineering The Australian National University Canberra ACT 0200 Australia cInstitute of Optics University of Rochester Rochester NY 14627 USA

The nonlinear process of stimulated Raman scattering is important for silicon photonics as it enables optical amplification and lasing. However, generally employed numerical approaches provide very little insight into the contribution of different silicon Raman amplifier (SRA) parameters. In this paper, we solve the coupled pump‐signal equations analytically and derive an exact formula for the envelope of a signal pulse when picosecond optical pulses are amplified inside a SRA pumped by a continuous‐wave laser beam. Our solution is valid for an arbitrary pulse shape and fully accounts for the Raman gain‐dispersion effects, including temporal broadening and group‐velocity reduction. Our results are useful for optimizing the performance of SRAs and for engineering controllable signal delays.

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