Sharif Digital Repository

A novel methodology for designing a multi-ejector refrigeration system

Author

Aligolzadeh, F.

Publisher

Elsevier Ltd,

Pub. Year

2019

Subjects

Cooling system. / Multi-ejector. / Numerical simulation. / Optimization. / Refrigeration system. / Coefficient of performance. / Computer simulation. / Cooling systems. / Design. / Ejectors (pumps) / Operating costs. / Shape optimization. / Temperature. / Condenser pressure. / Condensing pressure. / Ejector refrigeration systems. / Entrainment ratio. / Novel methodology. / Optimum efficiency. / Supersonic ejector. / Refrigeration.

Effect of heating profile on desorption curve in temperature programmed desorption analysis: Case study of acid sites distribution of SAPO-34

Author

Izadbakhsh, A.

Pub. Year

2009

Subjects

Acidity. / Heating profile. / SAPO-34. / Stepwise. / TPD. / Acid site. / Acid sites distribution. / Acid strengths. / Desorption peaks. / Desorption signals. / Effect of temperature. / Hydroxyl groups. / Linear heating. / SAPO-34. / Stepwise. / Stepwise heating. / Temperature constant. / Temperature programmed desorption analysis. / TPD. / Acids. / Ammonia. / Gas adsorption. / Heating. / Molecular sieves. / Sieves. / Thermal effects. / Temperature programmed desorption.

Theoretical and experimental study of cascade solar stills

Author

Ziabari, F. B.

Pub. Year

2013

Subjects

Brackish water. / Cascade solar still. / Desalination. / Solar intensity.

Application of a continuous kinetic model for the hydrocracking of vacuum gas oil

Author

Arefi, A.

Pub. Year

2014

Subjects

Continuous lumping. / Hydrocracking. / Isomax. / Kinetics. / Vacuum gas oil. / Enzyme kinetics. / Kinetic theory. / Parameter estimation. / Petroleum refining. / Fixed bed reactor. / Kinetic modeling. / Optimization procedures. / Product distributions. / Weight fractions. / Residence time distribution.

An improved methodology for design of custom-made hip prostheses to be fabricated using additive manufacturing technologies

Author

Rahmati, S.

Publisher

Emerald,

Pub. Year

2012

Subjects

Manufacturing systems. / Rapid prototypes. / Total hip replacement. / Fill and fit. / Medical rapid prototyping. / Prosthetic devices. / Rapid prototype. / Total hip replacement (THR) / Arthroplasty. / Biomechanics. / Bone. / Computer aided design. / Computerized tomography. / Hip prostheses. / Hydraulic structures. / Image processing. / Investment casting. / Manufacture. / Rapid prototyping. / Restoration. / Technology. / Prosthetics.

Evaluation and enhancing of operational performance and training objective in accordance with Line Operations Safety Audit (LOSA)

Author

Khoshkhoo, R.

Pub. Year

2011

Real-time impulse noise suppression from images using an efficient weighted-average filtering

Author

Hosseini, H.

Publisher

Institute of Electrical and Electronics Engineers Inc,

Pub. Year

2015

Subjects

weighted-average filtering. / Image denoising. / Pixels. / Spurious signal noise. / Statistical methods. / Impulse detector. / Impulse noise suppression. / Interpolated images. / Real time. / Real-time application. / Relative positions. / Visual qualities. / Weighted averages. / Impulse noise.

Kinetic modeling of pyrolysis of scrap tires

Author

Mazloom, G.

Pub. Year

2009

Subjects

Continuous lumping. / Discrete lumping. / Kinetic modeling. / Pyrolysis. / Scrap tires. / Chemical reactions. / Forecasting. / Hydrocarbons. / Igneous rocks. / Mixtures. / Parameter estimation. / Pyrolysis. / Thermogravimetric analysis. / Tires. / Alternative process. / Boiling point distributions. / Boiling ranges. / Catalytic pyrolysis. / Complex systems. / Continuous lumping. / Continuous mixtures. / Continuous models. / Discrete lumping. / Discrete models. / Environmental problems. / Experimental datum. / First-order reactions. / Kinetic modeling. / Kinetic models. / Lumping models. / Model parameters. / Model predictions. / Optimization procedures. / Product yields. / Pyrolysis products. / Reactant mixtures. / Scrap tires. / Thermal pyrolysis. / Used tires. / Boiling point.

Determine oil content in petroleum waxes

Author

Mafi, M.

Pub. Year

2006

Analytical modeling of variable-reluctance tubular resolver based on magnetic equivalent circuit and conformal mapping

Author

Keyvannia, A.

Publisher

Institute of Electrical and Electronics Engineers Inc,

Pub. Year

2021

Subjects

Conformal mapping. / Equivalent circuits. / Finite element method. / Magnetic circuits. / Timing circuits. / Winding. / Air-gaps. / Atmospheric modeling. / Computational modelling. / Finite element analyse. / Integrated circuit modeling. / Magnetic equivalent circuit method. / Schwarz-Christoffel mapping. / Stator winding. / Tubular resolv. / Tubulars. / Variable reluctance. / Variable-reluctance resolv. / Analytical models.

Information and the Brukner-Zeilinger interpretation of quantum mechanics: A critical investigation

Author

Shafiee, A.

Pub. Year

2006

Subjects

Brukner and Zeilinger's interpretation. / Shannon information. / Quantum mechanics. / Information concept.

Key parameters in hydrothermal synthesis and characterization of low silicon content SAPO-34 molecular sieve

Author

Izadbakhsh, A.

Pub. Year

2009

Subjects

Acidity. / Silicon source. / Building blockes. / Critical parameter. / Crystalline structure. / Crystallization temperature. / High silicon content. / High temperature. / Hydrothermal crystallization. / In-situ FT-IR. / Key parameters. / MTO. / NMR data. / Precipitated silicas. / SAPO-34. / Silica sols. / Silicon contents. / Silicon islands. / Static conditions. / Synthesis. / Synthesis conditions. / Synthesis gel. / Calcination. / Crystallization. / Diffraction. / Fourier transform infrared spectroscopy. / Holographic interferometry. / Molecular sieves. / Sieves. / Silica. / X ray diffraction analysis. / Hydrothermal synthesis.

On the Finiteness of Noetherian Rings with Finitely Many Regular Elements

Author

Akbari, S.

Pub. Year

2014

Subjects

Noetherian ring. / Regular element.

Precision of direction of arrival (DOA) estimation using novel three dimensional array geometries

Author

Poormohammad, S.

Publisher

Elsevier GmbH,

Pub. Year

2017

Subjects

Array geometry. / DOA. / Monte-Carlo simulation. / MUSIC. / Radio direction finding. / Smart antennas. / Subspace-based DOA. / Three dimensional (3D) arrays. / Antenna arrays. / Antennas. / Geometry. / Intelligent systems. / Monte Carlo methods. / Radio direction finding systems. / Smart antennas. / Stars. / Wavelet analysis. / Array geometries. / Direction of arrivalestimation(DOA) / Geometrical configurations. / MUSIC. / Subspace based. / Three dimensional arrays. / Three-dimensional (3D) arrays. / Triangular configuration. / Direction of arrival.

Detecting matrices for random CDMA systems

Author

Sedaghat, M. A.

Publisher

IEEE Computer Society,

Pub. Year

2013

Subjects

CDMA system. / Coin weighing. / Detecting matrix. / Overloaded scheme. / Sparse CDMA. / Code division multiple access. / Weighing. / Coin weighing problem. / Construction method. / Large system. / Random Matrix. / Sparse codes. / Information technology.

A neuro-optimal approach for thrust-insensitive trajectory planning

Author

Pourtakdoust, S. H.

Pub. Year

2009

Subjects

Aerospace engineering. / Control technology. / Ascent trajectory. / Closed-loop. / Closed-loop feedback. / Control technology. / Design/methodology/approach. / Flight parameters. / Flight trajectory. / Guidance laws. / Knowledge base. / Neural nets. / New approaches. / New strategy. / Non-linear dynamic systems. / Non-linear optimal control. / Open loops. / Optimal guidance. / Optimal guidance law. / Optimal path planning. / Optimal trajectory generation. / Propellant engines. / Trajectory Planning. / Variational formulation. / Automobile engines. / Knowledge based systems. / Launching. / Linear control systems. / Neural networks. / Solid propellants. / Spacecraft propulsion. / Trajectories. / Optimization.

Design oriented technique for mitigating position error due to shaft run-out in sinusoidal-rotor variable reluctance resolvers

Author

Nasiri Gheidari, Z.

Pub. Year

2017

Subjects

Errors. / Geometrical dimensions. / Optimisations. / Position errors. / Rotor variables. / Simple structures. / Sinusoidal variations. / Time-stepping finite element method. / Variable reluctance. / Finite element method.

The seismic performance of K-braced cold-formed steel shear panels with improved connections

Author

Pourabdollah, O.

Publisher

Elsevier Ltd,

Pub. Year

2017

Subjects

Cold formed steel frame. / Ductility factor. / K-braced. / Secant stiffness. / Shear panel. / Buckling. / Ductility. / Energy absorption. / Energy dissipation. / Shear strength. / Stiffness. / Studs (fasteners) / Studs (structural members) / Cold-formed steel frames. / Ductility capacity. / Lateral stiffness. / Secant stiffness. / Seismic Performance. / Shear panels. / Shear resistances. / Shear flow.

Multi-GNSS constellation fusion based on statistical features of positioning error

Author

Abolfathi Momtaz, A.

Publisher

Institute of Electrical and Electronics Engineers Inc,

Pub. Year

2018

Subjects

Component-Multi-GNSS. / Data Fusion. / GLONASS. / GPS. / Positioning. / Data fusion. / Satellites. / Component-Multi-GNSS. / GLONASS. / Inter system. / Positioning. / Positioning error. / Statistical features. / Global positioning system.