Sharif Digital Repository

Separation of speech sources in under-determined case using SCA and time-frequency methods

Author

Mahdian, R.

Pub. Year

2008

Subjects

De-mixing. / Estimation techniques. / K-means clustering. / Mixing matrix. / Separation techniques. / Short time fourier transforms. / Simulation result. / Source extraction. / Source separation. / Speech signals. / Speed enhancement. / Time-frequency methods. / Under-determined. / Unmixing. / Apartment houses. / Mixtures. / Separation. / Signal analysis. / Blind source separation.

Visibility testing and counting for uncertain segments

Author

Abam, M. A.

Publisher

Elsevier B.V,

Pub. Year

2019

Subjects

Approximation algorithm. / Computational geometry. / Randomized algorithm. / Visibility. / Probability distributions. / Query processing. / Approximation factor. / Counting problems. / Discrete probability distribution. / Model of uncertainty. / Probabilistic segments. / Randomized Algorithms. / Standard versions. / Time algorithms. / Approximation algorithms.

Robust backstepping control of an interlink converter in a hybrid AC/DC microgrid based on feedback linearisation method

Author

Mahdian Dehkordi, N.

Publisher

Taylor and Francis Ltd

Pub. Year

2016

Subjects

Backstepping control. / Bidirectional interlink converter (BIC) / Feedback linearisation control. / Plug-and-play, nonlinear model. / Backstepping. / Controllers. / Disturbance rejection. / Intelligent systems. / MATLAB. / Monte Carlo methods. / Nonlinear systems. / Rectifying circuits. / Voltage control. / DC link voltage control. / Feedback linearisation. / Non-linear model. / Feedback.

A backstepping high-order sliding mode voltage control strategy for an islanded microgrid with harmonic/interharmonic loads

Author

Mahdian Dehkordi, N.

Publisher

Elsevier Ltd,

Pub. Year

2017

Subjects

Backstepping control. / High-order sliding mode differentiator. / Interharmonic current. / Microgrid. / Unbalanced and nonlinear loads. / Backstepping. / Harmonic analysis. / Sliding mode control. / Voltage control. / Back-stepping controls. / Differentiators. / Interharmonic currents. / Micro grid. / Nonlinear load. / Controllers.

Distributed robust finite-time secondary voltage and frequency control of islanded microgrids

Author

Mahdian Dehkordi, N.

Pub. Year

2017

Subjects

Distributed cooperative secondary control. / Microgrids. / Controllers. / Cooperative communication. / Feedback linearization. / Multi agent systems. / Restoration. / Robust control. / Time sharing systems. / Distributed controller. / Finite-time control. / Frequency restorations. / Inverter-based distributed generators. / Micro grid. / Parametric uncertainties. / Power sharing. / Secondary control. / Electric machine control.

A robust backstepping high-order sliding mode control strategy for grid-connected DG units with harmonic/interharmonic current compensation capability

Author

Mahdian Dehkordi, N.

Publisher

Institute of Electrical and Electronics Engineers Inc,

Pub. Year

2017

Subjects

Backstepping control. / High-order sliding mode differentiator. / Interharmonic current. / Nonlinear and unbalanced loads. / Backstepping. / Controllers. / Harmonic analysis. / Power converters. / Back-stepping controls. / Differentiators. / Harmonic compensation. / Interharmonic currents. / Unbalanced loads. / Sliding mode control.

Fully distributed cooperative secondary frequency and voltage control of islanded microgrids

Author

Mahdian Dehkordi, N.

Pub. Year

2017

Subjects

Multi-agent system. / Adaptive control. / Eigenvalues and eigenfunctions. / Feedback linearization. / MATLAB. / Matrix algebra. / Multi agent systems. / Program processors. / Restoration. / Distributed cooperative secondary control. / Distributed adaptive control. / Distributed controller. / Distributed generations (DGs) / Micro grid. / Parametric uncertainties. / Power sharing. / Secondary control. / Adaptive control systems.

Robust tuning of transient droop gains based on kharitonov's stability theorem in droopcontrolled microgrids

Author

Mahdian Dehkordi, N.

Pub. Year

2018

Subjects

Degrees of freedom (mechanics) / Electric inverters. / MATLAB. / Stability. / Uncertainty analysis. / Digital time-domain simulations. / Inverter-based distributed generators. / Microgrid structures. / Robust d-stability analysis. / Robust stability analysis. / Software environments. / Two-degree of freedom. / Uncertain parameters. / Time domain analysis.

Length-Constrained path-matchings in graphs

Author

Ghodsi, M.

Pub. Year

2002

Subjects

Algorithms. / Matching. / NP-completeness. / Path-matching. / Pseudo-matching.

Nonlinear adaptive control of grid-connected three-phase inverters for renewable energy applications

Author

Mahdian Dehkordi, N.

Pub. Year

2015

Subjects

Distributed generation. / Renewable energy. / Adaptive control systems. / Asymptotic stability. / Backstepping. / Control nonlinearities. / Distributed power generation. / Electric inverters. / Electric power transmission networks. / Linear control systems. / Photovoltaic cells. / Power converters. / Solar power generation. / Time domain analysis. / Vector control (Electric machinery) / Adaptive Control. / Distributed generation units. / Global asymptotic stability. / Non-linear adaptive controls. / Power electronic converters. / Renewable energies. / Renewable energy applications. / Solar photovoltaic system. / Controllers.

Nonlinear adaptive control of grid-connected three-phase inverters for renewable energy applications

Author

Mahdian Dehkordi, N.

Pub. Year

2017

Subjects

Distributed generation. / Renewable energy. / Adaptive control systems. / Asymptotic stability. / Backstepping. / Control nonlinearities. / Distributed power generation. / Electric inverters. / Electric power transmission networks. / Linear control systems. / Photovoltaic cells. / Power converters. / Solar power generation. / Time domain analysis. / Vector control (electric machinery) / Adaptive control. / Distributed generation units. / Global asymptotic stability. / Non-linear adaptive controls. / Power electronic converters. / Renewable energies. / Renewable energy applications. / Solar photovoltaic system. / Controllers.

Web graph compression by edge elimination

Author

Mahdian, A.

Pub. Year

2006

Subjects

Density measurement. / Data structures. / Radio access networks. / Testing. / Data compression.

Sudoku rectangle completion (Extended Abstract)

Author

Mahdian, M.

Publisher

Elsevier,

Pub. Year

2015

Subjects

Critical sets in Latin squares. / Latin squares. / Number of Sudoku squares. / Sudoku squares.

Decentralized aggregation and leader-following control of a swarm of quadcopters with nonlinear under-actuated dynamics

Author

Mahdian Parrany, A.

Publisher

Elsevier Masson S. R. L,

Pub. Year

2020

Subjects

Aggregation and leader-following control. / Artificial potential fields. / Nonlinear under-actuated dynamics of quadcopters. / Sliding mode control. / Swarm behavior control. / Drones. / Artificial potential functions. / Decentralized aggregations. / Evolution process. / Interaction relationship. / Leader following. / Leader following controls. / Nearest neighbor rule. / Swarm behavior. / Decentralized control.

Distributed noise-resilient secondary voltage and frequency control for islanded microgrids

Author

Mahdian Dehkordi, N.

Publisher

Institute of Electrical and Electronics Engineers Inc,

Pub. Year

2018

Subjects

Communication networks. / Distributed generation. / Distributed noise-resilient secondary control. / Frequency control. / Mathematical model. / Mean-square average consensus. / Microgrids. / Multi-agent systems. / Noise measurement. / Power sharing. / Protocols. / Stochastic networks. / Voltage control.

On a conjecture of Keedwell and the cycle double cover conjecture

Author

Mahdian, M.

Pub. Year

2000

Voltage and frequency consensusability of autonomous microgrids over fading channels

Author

Mahdian Dehkordi, N.

Publisher

Institute of Electrical and Electronics Engineers Inc,

Pub. Year

2021

Subjects

Additive noise. / Electric impedance measurement. / Fading channels. / Microgrids. / Multi agent systems. / Time delay. / Alternating current voltages. / Autonomous microgrids. / Co-operative systems. / Complex random variables. / Inverter interfaced distributed generations. / Random fluctuation. / System reliability. / Time varying- delays. / Time varying control systems.