Subjects: DCT coefficients. / Discrete Cosine Transform(DCT) / Fast implementation. / Faster implementation. / Optimisations. / SSIM indices. / Structural similarity indices (SSIM) / Watermark insertion. / Computational complexity. / Discrete cosine transforms. / Image quality. / Image watermarking. / Optimization.

Effect of electrical parameters on morphology, chemical composition, and photoactivity of the nano-porous titania layers synthesized by pulse-microarc oxidation

Author: Bayati, M. R.

Pub. Year: 2010

Subjects: Duty cycle. / Frequency. / Microarc oxidation. / Photocatalytic. / Pulse current. / Titania. / Applied voltages. / Atomic force microscopes. / Chemical compositions. / Current frequency. / Decomposition rate. / Duty cycles. / Electrical parameter. / Methylene blue solution. / Nano-porous. / Photo-catalytic. / Photoactivity. / Photocatalytic performance. / Porous structures. / Pulse currents. / Rutile phasis. / Scanning electron microscopes. / Surface chemical composition. / TiO. / Ultraviolet irradiations. / UV irradiation. / Irradiation. / Microscopes. / Morphology. / Oxidation. / Oxide minerals. / Scanning electron microscopy. / Surface topography. / Titanium dioxide. / X ray diffraction. / X ray photoelectron spectroscopy. / Surface morphology.

Spark plasma sintering of TaC-HfC UHTC via disilicides sintering aids

Author: Ghaffari, S. A.

Pub. Year: 2013

Subjects: Disilicides. / Densification behavior. / Disilicides. / HfC. / Liquid phase formation. / Low temperatures. / TaC. / UHTC. / Ultra-high-temperature ceramics. / Carbides. / Hafnium. / Mechanical properties. / Spark plasma sintering. / Tantalum carbide.

Learning low-dimensional subspaces via sequential subspace fitting

Author: Sadeghi, M.

Pub. Year: 2013

Subjects: Iteratively re-weighted least squares. / Low-dimensional subspaces. / Subspace clustering. / Additive White Gaussian noise. / Dictionary learning. / Low-dimensional subspace. / Re-weighted least squares. / Subspace fitting. / Synthetic and real data. / Training signal. / Clustering algorithms. / Electrical engineering. / Iterative methods. / White noise. / Gaussian noise (electronic)

Treatment of welding electrode manufacturing plant wastewater using coagulation/flocculationnanofiltration as a hybrid process

Author: Golestani, H. A.

Pub. Year: 2011

Subjects: Coagulation flocculation. / Ferric chloride. / High water. / Hybrid process. / Industrial wastewaters. / Manufacturing industries. / Manufacturing plant. / NF process. / Permeate flux. / Pretreatment process. / Recycle water. / Transmembrane pressures. / Treated wastewater. / Water scarcity. / Chlorination. / Chlorine compounds. / Coagulation. / Coated wire electrodes. / Effluents. / Flocculation. / Industry. / Manufacture. / Nanofiltration. / Turbidity. / Wastewater. / Wastewater reclamation. / Wastewater treatment. / Water conservation. / Water filtration. / Water supply. / Water treatment plants. / Welding. / Welding electrodes. / Chemical water treatment.

Fabrication of HAp-8YSZ composite layer on Ti/TiO2 nanoporous substrate by EPD/MAO method

Author: Hekmatfar, M.

Pub. Year: 2011

Subjects: 8YSZ. / Colloidal processing. / Composite layer. / Crack free. / Electrophoretic depositions. / EPD/MAO. / HAp. / Inner layer. / Nanoporous substrate. / Titania. / XRD. / Bioceramics. / Deposition. / Electrophoresis. / Ethanol. / Porous materials. / Scanning electron microscopy. / Sintering. / Substrates. / Titanium dioxide. / X ray diffraction analysis. / Nanocomposite films.

A dynamic incentive mechanism for security in networks of interdependent agents

Author: Farhadi, F.

Publisher: Springer Verlag,

Pub. Year: 2017

Subjects: Dynamic mechanism design. / Epidemics over networks. / Security games. / Budget control. / Game theory. / Machine design. / Coupled dynamics. / Dynamic mechanism. / Incentive compatible. / Incentive mechanism. / Incentive payments. / Overall networks. / Security games. / Social objectives. / Dynamics.

Densification and grain growth of nanocrystalline 3Y-TZP during two-step sintering

Author: Mazaheri, M.

Pub. Year: 2008

Subjects: Ceramic materials. / Firing (of materials) / Grain (agricultural product) / Grain size and shape. / Nanocrystalline alloys. / Nanocrystalline materials. / Nanostructured materials. / Sintering. / Yttria stabilized zirconia. / Yttrium alloys. / Zirconia. / Average grain sizes. / Densification. / Fractional density. / Grain sizes. / High temperature. / Monoclinic phase. / Nano-crystalline. / Nanocrystalline 3Y-TZP. / Optimum processing. / Phase stabilization. / Rapid cooling. / Single-step. / Stabilized zirconia. / Two-step sintering. / Ultra-fine grains. / XRD analysis. / Zirconia ceramics. / Grain growth.

Generation and dissipation of excess pore water pressure during CPTu in clayey soils: A numerical approach

Author: Golestani Dariani, A. A.

Publisher: Springer Science and Business Media Deutschland GmbH,

Pub. Year: 2021

Subjects: Numerical models. / Pressure distribution. / Soils. / Water. / Well testing. / Coupled numerical simulation. / Dissipation of excess pore water pressure. / Excess pore water pressure. / Field measurement. / Flow charac-teristics. / Initial conditions. / Numerical approaches. / Penetration process. / Soil testing. / Clay soil. / Cone penetration test. / Consolidation. / Dissipation. / Finite element method. / Numerical model. / Piezometer. / Pore pressure. / Soil mechanics.

One-shot federated learning: Theoretical limits and algorithms to achieve them

Author: Salehkaleybar, S.

Publisher: Microtome Publishing,

Pub. Year: 2021

Subjects: Budget control. / Error analysis. / Communication efficiency. / Distributed learning. / Federated learning. / Few shot learning. / Loss functions. / Low bound. / Observed samples. / Statistical optimization. / Theoretical algorithms. / Theoretical limits. / Parameter estimation.

Integrating constrained random waves in endurance time analysis of offshore structures subjected to sea waves

Author: Matin Nikoo, H.

Pub. Year: 2012

Subjects: Better performance. / Collapse analysis. / Computational time. / Constrained newwave. / Novel methodology. / Off shore platforms. / Performance indices. / Performance-based analysis. / Arctic engineering. / Drilling platforms. / Ocean currents. / Offshore oil fields. / Offshore structures. / Water waves. / Time domain analysis.

Eigen-gap of structure transition matrix: A new criterion for Image Quality Assessment

Author: Joneidi, M.

Pub. Year: 2015

Subjects: Transition Matrix. / Signal processing. / Eigen-gap. / Image quality assessment. / Image quality assessment (IQA) / Structural clustering. / Structural relationship. / Structural transitions. / Structure transitions. / Transition matrices. / Image quality.

An efficient dynamic allocation mechanism for security in networks of interdependent strategic agents

Author: Farhadi, F.

Publisher: Springer New York LLC,

Pub. Year: 2019

Subjects: Dynamic mechanism design. / Epidemics over networks. / Security games. / Strategic agents.

Optimum operating conditions for direct oxidation of h 2s in a fluidized bed reactor

Author: Golestani, F.

Pub. Year: 2011

Subjects: Direct oxidization. / Fluidized bed. / H 2s. / Mathematical modeling. / Optimum conditions. / Bed density. / Dew points. / Direct oxidation. / Economical aspects. / Elemental sulfur. / External circulation. / Fixed bed reactor. / Fluidized bed reactors. / H ₂s. / Mathematical modeling. / Matlab- software. / Operating condition. / Optimum conditions. / Optimum operating conditions. / Oxidization. / Reactor models. / Stable catalysts. / Temperature range. / H₂S. / Catalysts. / Chemical reactors. / Fluid catalytic cracking. / Fluidized bed furnaces. / Fluidized beds. / Hydrogen sulfide. / Mathematical models. / Sulfur. / Fluidization. / Fluidization. / Chemical reactors.

Optimum operating conditions for direct oxidation of H2S in a fluidized bed reactor

Author: Golestani, F.

Pub. Year: 2011

Subjects: Direct oxidization. / Fluidized bed. / Mathematical modeling. / Optimum conditions. / Bed density. / Dew points. / Direct oxidation. / Economical aspects. / Elemental sulfur. / External circulation. / Fixed bed reactor. / Fluidized bed reactors. / Matlab- software. / Operating condition. / Optimum operating conditions. / Oxidization. / Reactor models. / Stable catalysts. / Temperature range. / H2S. / Catalysts. / Fluid catalytic cracking. / Fluidized bed furnaces. / Fluidized beds. / Hydrogen sulfide. / Mathematical models. / Sulfur. / Fluidization. / Chemical reactors.

Micro-arc oxidized S-TiO2 nanoporous layers: Cationic or anionic doping?

Author: Bayati, M.R.

Pub. Year: 2010

Subjects: Porosity. / TiO2. / Band gap energy. / Crystalline lattice. / Doping. / Maximum values. / Microarc. / Microarc oxidation. / Nano-materials. / Nanoporous layers. / Porous morphology. / S-doped TiO. / SEM. / Sulfur concentrations. / TiO. / Titania. / Titanium substrates. / UV-Vis spectrophotometers. / XPS. / XRD analysis. / Dyes. / Nanostructured materials. / Oxidation. / Sulfur. / Titanium. / Titanium dioxide. / Doping (additives)

On the photocatalytic activity of the sulfur doped titania nano-porous films derived via micro-arc oxidation

Author: Bayati, M. R.

Pub. Year: 2010

Subjects: TiO2. / Absorption edges. / AFM. / Applied voltages. / Band gap energy. / Degradation rate. / Doped layers. / Doped titania. / Doped-TiO. / Doping. / Electrolyte compositions. / Electrolyte concentration. / Methylene Blue. / Microarc oxidation. / Nano-porous films. / Photoactivity. / Photocatalytic activities. / Photocatalytic performance. / Physical and chemical properties. / Rutile phasis. / SEM. / Sulfur concentrations. / TiO. / Titania. / UV irradiation. / UV- and. / UV-Vis spectrophotometers. / Visible irradiation. / XPS. / XRD. / Chemical properties. / Degradation. / Electrolytes. / Irradiation. / Optical properties. / Organic polymers. / Oxidation. / Oxide minerals. / Photocatalysis. / Sulfur. / Titanium dioxide. / X ray photoelectron spectroscopy. / Doping (additives)

Synthesis of narrow band gap (V2O5)x-(TiO2)1-x nano-structured layers via micro arc oxidation

Author: Bayati, M. R.

Pub. Year: 2010

Subjects: Vanadium oxides. / Ceramics. / Photo-catalysis. / Titanium oxide. / Vanadium oxide. / Absorption edges. / Applied voltages. / Atomic force microscopes. / Band gap energy. / Chemical compositions. / Composite layer. / Decomposition rate. / Methylene blue. / Methylene blue solution. / Micro arc oxidation. / Nano-structured layer. / Narrow band gap. / Photo-catalytic. / Scanning electron microscopes. / Sheet-like. / Sheet-like structure. / TiO. / Titania layers. / UV-vis spectrophotometers. / Micro arc oxidation. / Vanadium pentoxide. / Visible irradiation. / Visible wavelengths. / Catalysis. / Cavity resonators. / Ceramic materials. / Energy gap. / Irradiation. / Microscopes. / Morphology. / Optical properties. / Oxidation. / Oxide minerals. / Scanning electron microscopy. / Surface topography. / Synthesis (chemical) / Titanium. / Titanium dioxide. / Titanium oxides. / Vanadium. / Vanadium alloys. / Vanadium compounds. / X ray diffraction. / X ray photoelectron spectroscopy.

In situ growth of vanadia-titania nano/micro-porous layers with enhanced photocatalytic performance by micro-arc oxidation

Author: Bayati, M. R.

Pub. Year: 2010

Subjects: Methylene blue. / Micro-arc oxidation. / Porous. / Titanium oxide. / Vanadium oxide. / Applied voltages. / Atomic force microscopes. / Band gap energy. / Chemical compositions. / Composite layer. / Efficient method. / Electrolyte concentration. / In-situ growth. / Photocatalytic performance. / Photocatalytic reactions. / Porous layers. / Porous titanium. / Scanning electron microscopes. / TiO. / UV-Vis spectrophotometers. / Vanadia-titania. / Vanadium oxides. / Vanadium pentoxide. / Visible irradiation. / Cavity resonators. / Electrolytes. / Microscopes. / Optical properties. / Oxidation. / Oxide minerals. / Photodegradation. / Rate constants. / Scanning electron microscopy. / Surface morphology. / Surface roughness. / Synthesis (chemical) / Titanium. / Titanium dioxide. / Titanium oxides. / Vanadium. / Vanadium alloys. / Vanadium compounds. / X ray diffraction. / X ray photoelectron spectroscopy.

Master sintering curves of a nanoscale 3Y-TZP powder compacts

Author: Mazaheri, M.

Pub. Year: 2009

Subjects: 3Y-ZrO2. / Activation energy. / Chemical activation. / Grain size and shape. / Growth (materials) / Powders. / Sintering. / Yttrium alloys. / Zirconium alloys. / 3Y-ZrO₂. / A. Grain growth. / A. Sintering. / Aggregate sizes. / Different thermal histories. / Grain growth activation energies. / Isothermal sintering. / Master curves. / Master sintering curve. / Microstructural developments. / Model predictions. / Nanoscale. / Powder compacts. / Sintering behaviors. / Sintering cycles. / Grain growth.

Total 21059 records