Sharif Digital Repository

Multi-level decomposition approach for problem solving and design in software engineering

Author

Najafi, A.

Pub. Year

2011

Subjects

Decomposition. / Multi-level decomposition. / Complex problems. / Decomposition approach. / Decomposition methods. / Engineering disciplines. / Error tracking. / Hierarchal decomposition. / Key characteristics. / Multi-level. / Parallel processing. / Potential capability. / Research papers. / Software modification. / Sub-problems. / Target cascading. / Computational efficiency. / Engineering. / Machine design. / Machinery. / Software design. / Problem solving.

A mathematical analysis of the mechanism of ultrasonic induced fluid percolation in porous media: Part I

Author

Najafi, I.

Pub. Year

2010

Subjects

Absolute permeability. / Capillary pressure effects. / Capillary pressures. / Conventional models. / Developed model. / Distilled water. / Flow parameters. / Glass bead. / Gravity drainage. / Hagoort's backward methodology. / Inverse modeling. / Mathematical analysis. / Mesh size. / Modification methods. / Momentum conservation equations. / New model. / Non-wetting. / Non-wetting phasis. / Oil recoveries. / Oil viscosity. / Porous Media. / Porous medium. / Relative permeability. / Stokes' law. / Ultrasonic radiation. / Wave parameters. / Wave radiation. / Wetting phasis. / Working fluid. / Air. / Capillarity. / Capillary tubes. / Crude oil. / Enhanced recovery. / Inverse problems. / Petroleum engineering. / Porous materials. / Pressure effects. / Radiation. / Recovery. / Solvents. / Ultrasonic waves. / Viscosity. / Wetting. / Ultrasonics.

Development of sol-gel-derived multi-wall carbon nanotube/hydroxyapatite nanocomposite powders for bone substitution

Author

Hooshmand, T.

Pub. Year

2014

Subjects

Biological applications. / Bone substitute materials. / Field emission scanning electron microscopy. / Fourier transform infra reds. / Nano-composite powders. / Physical and mechanical properties. / Sol-gel synthesis. / Structure and properties. / Biocompatibility. / Carbon. / Carbon nanotubes. / Hydroxyapatite. / Morphology. / Nanocomposites. / Powders. / Scanning electron microscopy. / Sodium dodecyl sulfate. / Sol-gel process. / Sol-gels. / Thermoanalysis. / Tissue engineering. / Transmission electron microscopy. / X ray diffraction. / Bone.

Evaluation of relationship among filler amount, degree of conversion, and cytotoxicity: approaching performance enhancement novel design for dental Bis-GMA/UDMA/TEGDMA composite

Author

Najafi, H.

Pub. Year

2017

Subjects

Degree of conversion. / Dental composite. / Biocompatibility. / Cytotoxicity. / Fillers. / Fourier transform infrared spectroscopy. / Particle size. / Particle size analysis. / Scanning electron microscopy. / Silica. / Cytotoxicity test. / Particle size analyzers. / Performance enhancements. / Silica particles. / Unreacted monomers. / Urethane dimethacrylate. / Dental composites.

A Multi-Objective Robust Optimization Model for Logistics Planning in the Earthquake Response Phase [electronic resource] / Mehdi Najafi, Kourosh Eshghi, Wout Dullaert.

Author

Najafi, M. (Mehdi).

Subjects

Earthquake response. / Logistical activities. / Stochastic model. / Robust optimization. / Disaster management. / Dispatching and routing. / Multi commodity. / Multi objective.

Numerical investigation of flow pattern and hydrodynamic forces of submerged marine propellers using unsteady boundary element method

Author

Najafi, S.

Publisher

SAGE Publications Ltd,

Pub. Year

2019

Subjects

Boundary element method. / Marine propellers. / Unsteady panel method. / Wake sheet generation. / Boundary integral equations. / Flow patterns. / Functions. / Numerical methods. / Sailing vessels. / Wakes. / Boundary element approaches. / Inherent instability. / Marine propeller. / Mathematical formulation. / Numerical algorithms. / Numerical investigations. / Panel methods. / Time stepping method.

Numerical study of propulsion performance in swimming fish using boundary element method

Author

Najafi, S.

Publisher

Springer Verlag,

Pub. Year

2017

Subjects

Boundary element method. / Fish-like swimming. / Wake sheet modeling. / Animals. / Numerical methods. / Propulsion. / Sailing vessels. / Wakes. / Bernoulli equations. / Continuous functions. / Fish like swimming. / Hydrodynamic simulation. / Kinematic equations. / Propulsion performance. / Structural modeling. / Time stepping algorithms. / Fish.

Pricing and quality setting strategy in maritime transportation: Considering empty repositioning and demand uncertainty

Author

Najafi, M.

Publisher

Elsevier B.V,

Pub. Year

2021

Subjects

Containers. / International trade. / Optimization. / Profitability. / Ships. / Uncertainty analysis. / Waterway transportation. / Demand uncertainty. / Maritime transportation. / Mathematical formulation. / Potential demand. / Pricing strategy. / Robust optimization. / Service Quality. / Transportation industry. / Uncertain demand. / Uncertainty. / Costs.

Strain hardening mechanisms in aged AEREX350 superalloy

Author

Najafi, H.

Pub. Year

2005

Subjects

Compression testing. / Deformation. / Precipitation (chemical) / Strain hardening. / Transmission electron microscopy. / AEREX350 alloy. / Stacking fault energy. / Superalloys. / Superalloy.