Sharif Digital Repository

Analog computing by Brewster effect

Author

Youssefi, A.

Publisher

OSA - The Optical Society

Pub. Year

2016

Subjects

Data handling. / Lenses. / Metamaterials. / Optical data processing. / Analog computing. / Computation methods. / Continuous data. / Differentiators. / Mathematical operations. / Optical signals. / Recent progress. / Reflection symmetry. / Computation theory.

Beam manipulating by gate-tunable graphene-based metasurfaces

Author

AbdollahRamezani, S.

Publisher

OSA - The Optical Society,

Pub. Year

2015

Subjects

Optics. / Optoelectronic devices. / Graphene plasmons. / High confinement. / Incident beams. / Optoelectronic applications. / Shunt admittances. / Sub-wavelength structures. / Transmit arrays. / Tunabilities. / Graphene.

Designing a dimmable OPPM-based VLC system under channel constraints

Author

Chizari, A.

Publisher

Institute of Electrical and Electronics Engineers Inc,

Pub. Year

2016

Subjects

Monte Carlo simulation. / Overlapping PPM. / System design. / Bit error rate. / Codes (symbols) / Digital signal processing. / Fading channels. / Intelligent systems. / Light. / Modulation. / Optical communication. / Pulse position modulation. / Signal processing. / Systems analysis. / Turbo codes. / Visible light communication. / Channel constraints. / Channel delay spread. / Coding gains. / Dimming control. / Illumination standards. / Overlapping pulse position modulation (OPPM) / Trellis coded modulation. / Visible light communications (VLC) / Monte Carlo methods.

Visible light for communication, indoor positioning, and dimmable illumination: a system design based on overlapping pulse position modulation

Author

Chizari, A.

Pub. Year

2017

Subjects

Channel sensing multiple access. / Dimming support. / Monte carlo simulation. / Overlapping pulse position modulation. / System design. / Bit error rate. / Carrier communication. / Carrier sense multiple access. / Codes (symbols) / Fading channels. / Indoor positioning systems. / Intelligent systems. / Light. / Modulation. / Monte carlo methods. / Optical communication. / Pulse position modulation. / Systems analysis. / Turbo codes. / ALOHA. / Carrier sense multiple access (CSMA) / Indoor positioning. / Multiple access. / Overlapping pulse position modulation (OPPM) / Received signal strength. / Trellis coded modulation. / Visible light communications (VLC) / Visible light communication.

Statistical distribution of intensity fluctuations for underwater wireless optical channels in the presence of air bubbles

Author

Jamali, M. V.

Publisher

Institute of Electrical and Electronics Engineers Inc,

Pub. Year

2016

Subjects

Channel coherence time. / Fading statistical distribution. / Information theory. / Normal distribution. / Optical communication. / Reliability analysis. / Scintillation. / Channel coherence. / Intensity fluctuations. / Log-normal distribution. / Probability density function (pdf) / Statistical distribution. / Underwater channels. / Underwater wireless optical communications. / Wireless optical channels. / Probability density function.

Analog computing using graphene-based metalines

Author

AbdollahRamezani, S.

Publisher

OSA - The Optical Society,

Pub. Year

2015

Subjects

Fourier transforms. / Mathematical transformations. / Plasmons. / Signal processing. / Analog computing. / Analytical results. / Fourier transformations. / Graphene plasmons. / High-efficiency. / Mathematical operations. / Output response. / Signal processor. / Graphene.

Statistical studies of fading in underwater wireless optical channels in the presence of air bubble, temperature, and salinity random variations

Author

Jamali, M. V.

Publisher

Institute of Electrical and Electronics Engineers Inc,

Pub. Year

2018

Subjects

Fading statistical distribution. / Salinity variation. / Temperature-induced turbulence. / Optical communication. / Refractive index. / Scintillation. / Transmitters. / Turbulence. / Weibull distribution. / Air bubbles. / Coherence time. / Goodness of fit. / Salinity variations. / Statistical distribution. / Temperature-induced. / Underwater wireless optical communications. / Underwater acoustics.

Dielectric metasurfaces solve differential and integro-differential equations

Author

Abdollahramezani, S.

Publisher

OSA - The Optical Society,

Pub. Year

2017

Subjects

Differential equations. / Fourier transforms. / Integrodifferential equations. / Lenses. / Mathematical transformations. / CMOS Compatible. / Constant coefficients. / Conventional lens. / Fourier transformations. / Homogeneous dielectrics. / Incident angles. / Incident light. / Mathematical operations. / Ordinary differential equations.

The relationship between an EFL teacher's gender and students' willingness to communicate

Author

Khosravizadeh, P.

Publisher

Common Ground Publishing,

Pub. Year

2013

Subjects

Cultural orientations. / Foreign language teaching. / Gender. / Social factors. / Willingness to communicate.

Design and development of a miniaturized roto-translational motion platform for microaerial vehicle identification

Author

Abdollahi, M. R.

Publisher

IEEE,

Pub. Year

2024

Subjects

5 Degree-of-freedom. / Micro aerial vehicle. / Motion platform. / System identification. / Wind tunnel test. / Integrated circuit design. / Kalman filters. / Micro air vehicle (MAV) / Structural dynamics.

An automated simple algorithm for realistic pore network extraction from micro-tomography images

Author

Rabbani, A.

Pub. Year

2014

Subjects

City-block distance function. / Micro-tomography images. / Pore network extraction. / Watershed segmentation algorithm. / Algorithms. / Extraction. / Image processing. / Mechanical permeability. / Porous materials. / Tomography. / Algorithm implementation. / City-block distances. / Coordination number. / Image processing functions. / Micro-tomography. / Network extractions. / Pore networks. / Image segmentation. / Algorithm. / Porous medium. / Size distribution. / Watershed.

Discrimination of heart arrhythmias using novel features in heart rate phase space

Author

Moharreri, S.

Pub. Year

2013

An intelligent hybrid classification algorithm integrating fuzzy rule-based extraction and harmony search optimization: Medical diagnosis applications

Author

Mousavi, S. M.

Publisher

Elsevier B.V,

Pub. Year

2021

Subjects

Classification (of information) / Computer aided diagnosis. / Efficiency. / Fuzzy inference. / Fuzzy rules. / Heuristic algorithms. / Machine learning. / Classification algorithm. / Cross validation. / Fuzzy rule based. / Fuzzy rule based systems. / Harmony search algorithms. / Learning classifiers. / Machine-learning. / Medical data sets. / Nested cross validations. / Taguchi's methods. / Taguchi methods.

Performance evaluation of shared hosting security methods

Author

Mirheidari, S. A.

Pub. Year

2012

Subjects

LAMP. / Apache Security. / ITK. / MPM. / Peruser. / Shared Hosting. / Suexec. / Suphp. / Electric lamps. / Ubiquitous computing. / Websites.

The behaviour of an artificially cemented sandy gravel

Author

Haeri, S. M.

Pub. Year

2005

Subjects

Compressive strength. / Pore pressure. / Portland cement. / Sand. / Shear stress. / Soils. / Carbonaceous materials. / Coarse-grained alluvium. / Sandy gravel. / Stress ratio. / Gravel. / Geotechnical engineering.

An imperialist competitive algorithm approach for multi-objective optimization of direct coupling photovoltaic-electrolyzer systems

Author

Maroufmashat, A.

Pub. Year

2014

Subjects

Direct coupling. / Imperialist competitive algorithm (ICA) / Multi-objective nonlinear optimization. / Optimal size and operating condition. / PV/EL system. / Non-linear optimization. / Operating condition. / PV/EL system.

Kalman filter based packet loss replacement in presence of additive noise

Author

Miralavi, S. R.

Pub. Year

2012

Subjects

Kalman filter. / Low Order Linear Prediction. / Bandwidth extension. / High quality. / Linear prediction. / Network terminals. / Packet-based communication. / Post-processing techniques. / Speech quality. / Speech segments. / Speech signals. / State-space. / Voice quality. / VoIP. / Adaptive filters. / Algorithms. / Bandwidth. / Communication systems. / Computer vision. / Internet telephony. / Packet loss. / Speech analysis. / Kalman filters.

Investigation of Mesh Sensitivity Influence to Determine Crack Characteristic by Finite Element Methods

Author

Azimi, M.

Publisher

Springer New York LLC

Pub. Year

2016

Subjects

Fracture mechanics. / Optimum element size. / Semi-elliptical groove. / Fracture. / Fracture mechanics. / Element sizes. / Extended finite element models. / Fracture characteristics. / LEFM. / Linear elastic fracture. / Numerical results. / Semi-elliptical groove. / XFEM. / Finite element method.

Investigation of the effect of nanosilica on rheological, thermal, mechanical, structural, and piezoelectric properties of poly(vinylidene fluoride) nanofibers fabricated using an electrospinning technique

Author

Haddadi, S. A.

Pub. Year

2017

Subjects

Fluorine compounds. / Piezoelectricity. / Silica. / Tensile strength. / Crystalline structure. / Degree of crystallinity. / Electrospinning techniques. / Output voltages. / Piezoelectric property. / Poly (vinylidene fluoride)(PVDF) / Poly(vinylidene fluoride) / Rheological property. / Nanofibers.

A method for real-time safe navigation in noisy environments

Author

Neyshabouri, S. A. S.

Pub. Year

2013

Subjects

Path planning. / Graphics Processing Unit. / Near-optimal solutions. / Noisy environment. / Parallel processing. / Rapidly-exploring random trees. / Safe navigations. / Safety evaluations. / Sampling-based motion planning. / Algorithms. / Collision avoidance. / Computer graphics. / Computer graphics equipment. / Motion control. / Motion planning. / Program processors. / Robots. / Trees (mathematics) / Robotics.