Sharif Digital Repository

Haptic device application in persian calligraphy

Author

Mansouri Boroujeni, M.

Pub. Year

2009

Subjects

Calligraphy. / Different modes. / Haptic devices. / Haptics. / Interface applications. / Persians. / Training systems. / Trajectory control. / Virtual training. / Attitude control. / Education. / Trajectories. / Haptic interfaces.

Improving the efficiency and directivity of THz photoconductive antennas by using a defective photonic crystal substrate

Author

Rahmati, E.

Publisher

Elsevier B.V,

Pub. Year

2018

Subjects

Antenna arrays. / Directional patterns (antenna) / Efficiency. / Photoconductivity. / Photonic crystals. / Surface waves. / Antenna directivity. / Effective radiated power. / Photoconductive antennas. / Photonic crystal substrates. / Radiation characteristics. / Radiation performance. / Terahertz technology. / Wide frequency range. / Terahertz waves.

Design of terahertz photoconductive antenna arrays based on defective photonic crystal substrates

Author

Rahmati, E.

Publisher

Elsevier Ltd,

Pub. Year

2019

Subjects

Arrays. / Defective photonic crystal substrate. / Propagation waves. / Terahertz antennas. / Antenna arrays. / Cost effectiveness. / Dielectric devices. / Directional patterns (antenna) / Natural frequencies. / Photoconductivity. / Photonic crystals. / Substrates. / Surface waves. / Dielectric resonator antennas. / Full-wave simulations. / Photoconductive antennas. / Photonic crystal substrates. / Radiation characteristics. / Radiation performance. / Terahertz waves.

Design of a hybrid spoof plasmonic sub-terahertz waveguide with low bending loss in a broad frequency band

Author

Khosravi Moghaddam, M. A.

Publisher

OSA - The Optical Society,

Pub. Year

2017

Subjects

Frequency bands. / Metals. / Millimeter waves. / Plasmons. / Waveguides. / Dielectric cladding. / Dielectric medium. / Metallic gratings. / Metallic structures. / Silicon technologies. / Spoof surface plasmons. / Terahertz integrated circuits. / Wave-guiding characteristics. / Terahertz waves.

Phase-induced intensity noise in digital incoherent all-optical tapped-delay line systems [electronic resource] / M. M. Mansouri Rad and J. A. Salehi.

Author

Mansouri Rad, M. M. (Mohammad Mehdi).

Subjects

Autocorrelation function. / Coherence time. / Optical self-SNR. / Phase noise. / Processing time.

Improved MPC algorithms for Edit distance and Ulam distance

Author

Boroujeni, M.

Publisher

IEEE Computer Society,

Pub. Year

2021

Subjects

Approximation algorithms. / Combinatorial optimization. / Approximation factor. / Constant factors. / Edit distance. / Massively parallels. / Round complexity. / Running time. / Computational complexity.

MEHRAB MAPS: One-dimensional piecewise nonlinear chaotic maps

Author

Borujeni, S. E.

Pub. Year

2012

Subjects

FMM map. / Mehrab map. / SMM map. / Chaotic map. / Chaotic regions. / Horizontal symmetry. / Initial conditions. / Lyapunov exponent. / Nonlinear map. / Parabola curves. / Piece-wise. / Return map. / Chaotic systems. / Differential equations. / Graphic methods. / Lyapunov functions. / Mathematical transformations. / Lyapunov methods.

1 + ϵ approximation of tree edit distance in quadratic time

Author

Boroujeni, M.

Publisher

Association for Computing Machinery,

Pub. Year

2019

Subjects

Approximation algorithms. / Fine-grained complexity. / Graph algorithms. / Randomized algorithms. / Approximation theory. / Bioinformatics. / Computational complexity. / Forestry. / RNA. / Approximation scheme. / Compiler optimizations. / Computational biology. / Fine grained. / Natural generalization. / Secondary structures. / Trees (mathematics)

A computationally efficient algorithm to find time-optimal trajectory of redundantly actuated robots moving on a specified path

Author

Mansouri, S.

Publisher

Cambridge University Press,

Pub. Year

2018

Subjects

Redundantly actuated robots. / Robot control. / Time-optimal. / Computer applications. / Robotics. / Computational costs. / Computationally efficient. / Phase-plane analysis. / Redundantly actuated. / Robot controls. / Straight-forward method. / Time optimal trajectory. / Robots.

Design and optimization of Gregorian-based reflector systems for thz imaging system optics

Author

Koohi Ghamsari, M. H.

Publisher

Institute of Electrical and Electronics Engineers Inc,

Pub. Year

2022

Subjects

Gregorian. / Terahertz. / Antenna reflectors. / Imaging systems. / Reflection. / Terahertz waves. / Design and optimization. / Optical performance. / Optical sections. / Reflective optics. / Reflector antennas. / Reflector system. / Tera Hertz. / Terahertz imaging systems. / THz imaging. / Aberrations.

Design of fresnel-region millimeter-wave metasurface beam shaper using deep learning

Author

Koohi Ghamsari, M. H.

Publisher

IEEE,

Pub. Year

2024

Subjects

Beam shaping. / Deep-learning. / Flat-top beam shaper. / Fresnel region. / Metasurface. / Beam forming networks. / Beamforming. / Hadrons.

THz plasmonic devices based on an array of metallic posts in a parallel-plate waveguide

Author

Ahmadi Boroujeni, M.

Pub. Year

2013

Subjects

Guided-wave devices. / Parallel metal plates. / Parallel plate waveguide. / Parallel plates. / Plasmonic devices. / Spoof surface plasmons. / Wave-guiding characteristics. / Terahertz waves. / Plasmons.

Achieving subwavelength field confinement in sub-terahertz regime by periodic metallodielectric waveguides

Author

Tehranian, A.

Publisher

OSA - The Optical Society,

Pub. Year

2019

Subjects

Bandwidth. / Coatings. / Diffraction gratings. / Guided electromagnetic wave propagation. / Metal cladding. / Modal analysis. / Surface plasmons. / Surface waves. / Waveguides. / Dispersion relations. / Free-space wavelengths. / Frequency band width. / Guided surface waves. / High resistivity silicon. / Metallodielectric waveguides. / Operational bandwidth. / Parallel metal plates. / Metals.

A compact polarization insensitive all-dielectric metasurface lens for Gaussian to tophat beam shaping in sub-terahertz regime

Author

Abbaszadeh, A.

Publisher

Elsevier B.V,

Pub. Year

2020

Subjects

Beam shaping. / Sub-terahertz imaging. / Lenses. / Mathematical transformations. / Polarization. / Structure (composition) / Beam-shaping. / Geometrical transformation. / Metasurfaces. / Operation wavelength. / Polarization independence. / Polarization-insensitive. / Sub-terahertz. / Two dimensional (2D) structure. / Gaussian beams.

Generating uniform irradiance in the fresnel region by quasi-optical beam shaping of a millimeter-wave source

Author

Abbaszadeh, A.

Publisher

OSA - The Optical Society,

Pub. Year

2019

Subjects

Acoustooptical effects. / Gaussian beams. / Geometrical optics. / Horn antennas. / Lens antennas. / Terahertz waves. / Analytical formulation. / Conical horn antennas. / Full-wave simulations. / Millimeter-wave (mm-wave) / Mm-wave antennas. / Optimization method. / Performance sensitivity. / Simulations and measurements. / Millimeter waves.

Achieving subwavelength field confinement in sub-terahertz regime by periodic metallodielectric waveguides

Author

Tehranian, A.

Publisher

OSA - The Optical Society,

Pub. Year

2019

Subjects

Bandwidth. / Coatings. / Diffraction gratings. / Guided electromagnetic wave propagation. / Metal cladding. / Modal analysis. / Surface plasmons. / Surface waves. / Waveguides. / Dispersion relations. / Free-space wavelengths. / Frequency band width. / Guided surface waves. / High resistivity silicon. / Metallodielectric waveguides. / Operational bandwidth. / Parallel metal plates. / Metals.

Generating uniform irradiance in the Fresnel region by quasi-optical beam shaping of a millimeter-wave source

Author

Abbaszadeh, A.

Publisher

OSA - The Optical Society,

Pub. Year

2019

Subjects

Acoustooptical effects. / Gaussian beams. / Geometrical optics. / Horn antennas. / Lens antennas. / Terahertz waves. / Analytical formulation. / Conical horn antennas. / Full-wave simulations. / Millimeter-wave (mm-wave) / Mm-wave antennas. / Optimization method. / Performance sensitivity. / Simulations and measurements. / Millimeter waves.

Waveguiding characteristics of a metal-clad dielectric grating for terahertz applications

Author

Tehranian, A.

Publisher

Elsevier B.V,

Pub. Year

2020

Subjects

Dielectric gratings. / Periodic structures. / Spoof surface plasmons. / Terahertz waveguides. / Metals. / Modal analysis. / Substrates. / Surface plasmons. / Waveguides. / Dielectric grating. / Dielectric image guide. / Dielectric pillars. / High resistivity silicon. / Modal characteristics. / Terahertz applications. / Wave-guiding characteristics. / Waveguide device. / Plate metal.

Improving the quality of active millimeter wave standoff imaging by incorporating the cross-polarized scattering wave

Author

Shojaeian, S.

Publisher

The Optical Society,

Pub. Year

2021

Subjects

Edge detection. / Object detection. / Background medium. / Background suppression. / Cross-polarized. / Metallic objects. / Metallic patches. / Millimeter-wave imaging. / Millimetre-wave imaging. / Polarized scattering. / Scattered waves. / Scattering waves. / Millimeter waves.