Sharif Digital Repository

The Sitnikov problem investigation with the method of multiple scales

Author

Dehghan Manshadi, A.

Publisher

Springer International Publishing,

Pub. Year

2018

Subjects

Perturbation technique. / Sitnikov equation. / The Method of Multiple Scales.

In-flight estimation of time-varying aircraft center of gravity position based on kinematics approach

Author

Dehghan Manshadi, A.

Publisher

American Institute of Aeronautics and Astronautics Inc,

Pub. Year

2018

Subjects

Adaptive control systems. / Aircraft. / Flight control systems. / Intelligent systems. / Kinematics. / Monte Carlo methods. / Parachutes. / Religious buildings. / Structural health monitoring. / Adaptive flight controls. / Center of gravity. / Health and usage monitoring systems. / Measurement data. / Model and simulation. / Model uncertainties. / Position estimation. / Relative acceleration. / Uncertainty analysis.

Decoupled scalar approach for aircraft angular motion estimation using a gyro-free inertial measurement unit

Author

Dehghan Manshadi, A.

Publisher

American Society of Mechanical Engineers (ASME),

Pub. Year

2019

Subjects

Aircraft angular motion estimation. / Decoupled scalar form. / Accelerometers. / Aircraft. / Equations of state. / Estimation. / Extended Kalman filters. / Free flight. / Gyroscopes. / All-accelerometers IMU. / Estimation algorithm. / Extended Kalman filter (EKFs) / Inertial measurement unit. / Mathematical modeling and simulation. / Measurement equations. / Relative acceleration. / Rigid body kinematics. / Motion estimation.

Aircraft mass properties estimation during airdrop maneuver: A nonlinear filtering approach

Author

Dehghan Manshadi, A.

Publisher

AIAA International,

Pub. Year

2021

Subjects

Adaptive control systems. / Aerodynamics. / Flight control systems. / Intelligent systems. / Monte Carlo methods. / Nonlinear analysis. / Nonlinear filtering. / Parameter estimation. / Uncertainty analysis. / Aircraft mass. / Estimation process. / Mass properties. / Measurement data. / Model outputs. / Model-based OPC. / Parameter estimation problems. / Property estimation. / System dynamics modelling. / Technology data. / Extended Kalman filters.

Control of pressure gradient in the contraction of a wind tunnel

Author

Dehghan Manshadi, M.

Pub. Year

2009

Subjects

Pressure distribution. / Contraction. / Freestream turbulence. / Static pressure distributions. / Subsonic wind tunnels. / Trip strip. / Trip strips. / Turbulence intensity. / Aerodynamics. / Atmospheric thermodynamics. / Installation. / Pressure gradient. / Shrinkage. / Tunnels. / Turbulence. / Wind tunnels. / Pressure effects.

Experimental study on correlation between turbulence and sound in a subsonic wind tunnel

Author

Dehghan Manshadi, M.

Pub. Year

2010

Subjects

Correlation. / Quadrupole term. / Wind tunnel. / Aerodynamic noise. / Experimental studies. / Pressure waves. / Quadrupoles. / Sound. / Sound generation. / Sound reduction. / Sound waves. / Subsonic wind tunnels. / Trip strips. / Turbulence intensity. / Velocity fluctuations. / Aerodynamics. / Subsonic flow. / Wind tunnels.

Effect of vortex generators on hydrodynamic behavior of an underwater axisymmetric hull at high angles of attack

Author

Dehghan Manshadi, M.

Publisher

Springer Verlag,

Pub. Year

2017

Subjects

Computational fluid dynamics (CFD) / Oil flow visualization. / Vortex generator. / Wind tunnel.

A novel method for materials selection in mechanical design: Combination of non-linear normalization and a modified digital logic method

Author

Dehghan Manshadi, B.

Publisher

Elsevier Ltd,

Pub. Year

2007

Subjects

Material properties. / Material selection. / Modified digital logic method. / Non-linear normalization. / Performance indices. / Weighting factors. / Materials testing. / Mechanical properties. / Numerical methods.

Power spectrum and FFT-based signal analysis in turbulence measurements

Author

Dehghan Manshadi, M.

Pub. Year

2009

Subjects

Wind tunnel. / Cost-effective methods. / FFT. / Hot-wire anemometry. / Longitudinal components. / Low-speed wind tunnel. / Settling chambers. / Trip strips. / Turbulence intensity. / Turbulence level. / Turbulence measurements. / Turbulence reduction. / Aerodynamics. / Fast Fourier transforms. / Power spectrum. / Shrinkage. / Signal analysis. / Tunnels. / Turbulence. / Wind tunnels.

A novel approach to spinal 3-D kinematic assessment using inertial sensors: towards effective quantitative evaluation of low back pain in clinical settings

Author

Ashouri, S.

Pub. Year

2017

Subjects

Classification. / Butterworth filters. / Cost effectiveness. / Health. / Inertial navigation systems. / Pattern recognition systems. / Principal component analysis. / 3-D kinematics. / Healthy individuals. / Inertial senor. / Pattern recognition techniques. / Quantitative assessments. / Quantitative evaluation. / Support vector machine classifiers. / Classification (of information) / Accelerometer. / Adult. / Biosensor. / Clinical article. / Clinical evaluation. / Controlled study. / Diagnostic accuracy. / Diagnostic test accuracy study. / Human. / Inertial sensor. / Kinematics. / Low back pain. / Male. / Pattern recognition. / Priority journal. / Quantitative analysis. / Sensitivity and specificity. / Support vector machine.

A computational grammar for Persian based on GPSG

Author

Bahrani, M.

Pub. Year

2011

Subjects

Computational grammar. / GPSG. / Persian language.

Experimental investigation on turbulence intensity reduction in subsonic wind tunnels

Author

Ghorbanian, K.

Pub. Year

2011

Subjects

Contraction. / Trip wire. / Turbulence reduction. / Wind tunnel. / Adverse pressure gradient. / Different sizes. / Experimental investigations. / Flow uniformity. / Free-stream velocity. / Low-speed wind tunnel. / Statistical analysis. / Subsonic wind tunnels. / Test sections. / Turbulence intensity. / Aerodynamics. / Turbulence. / Wire. / Wind tunnels.

Application of screens and trips in enhancement of flow characteristics in subsonic wind tunnels

Author

Soltani, M. R.

Pub. Year

2010

Subjects

Screen. / Trip strip. / Turbulence reduction. / Wind tunnel. / Damping screens. / Flow characteristic. / Settling chambers. / Subsonic wind tunnels. / Test sections. / Damping. / Turbulence intensity. / Turbulence level. / Aerodynamics. / Experiments. / Subsonic flow. / Experimental study. / Flow field. / Turbulence.

Control of separation in the concave portion of contraction to improve the flow quality

Author

Ghorbanian, K.

Pub. Year

2009

Subjects

Adverse pressure gradient. / Flow quality. / Freestream turbulence. / Significant impacts. / Static pressure distributions. / Subsonic wind tunnels. / Test sections. / Trip strips. / Turbulence intensity. / Turbulence level. / Aerodynamics. / Installation. / Pressure gradient. / Shrinkage. / Tunnels. / Turbulence. / Wind tunnels. / Pressure effects.

Upper bounds for the 2-hued chromatic number of graphs in terms of the independence number

Author

Dehghan, A.

Publisher

Elsevier,

Pub. Year

2012

Subjects

2-hued chromatic number. / 2-hued coloring. / Independence number. / Probabilistic method. / Chromatic number. / Chromatic number of graphs. / Graph G. / Independence number. / Probabilistic methods. / Regular graphs. / Two-color. / Upper Bound. / Networks (circuits) / Graph theory.