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Search Results: 1 - 10 of 31982 matches for " Sami Mohammad AL- Jaber "
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Energy and Momentum Considerations in an Ideal Solenoid  [PDF]
Sami Mohammad AL- Jaber
Journal of Electromagnetic Analysis and Applications (JEMAA) , 2010, DOI: 10.4236/jemaa.2010.23024
Abstract: The electromagnetic linear momentum and the energy balance in an infinite solenoid with a time-dependant current are examined. We show that the electromagnetic linear momentum density and its associated force density are balanced by the hidden momentum density and its associated hidden force density respectively. We also show that exactly half the energy delivered by the power supply appears as stored magnetic energy inside the solenoid. The other half is lost against the induced electromotive force that appears in the windings of the solenoid during the time through which the current is building up towards its final value. This energy loss, which is found in other analogue situations, is necessary to transfer the system from an initial non-equilibrium state to a final equilibrium one.
Path Integral Approach to Faraday's Law of Induction  [PDF]
Sami Mohammad Al-Jaber
Journal of Electromagnetic Analysis and Applications (JEMAA) , 2011, DOI: 10.4236/jemaa.2011.36030
Abstract: We derive a general form of the induced electromotive force due to a time-varying magnetic field. It is shown that the integral form of Faraday's law of induction is more conveniently written in the covering space. Thus the differential form is shown to relate the induced electric field in the nth winding number to the (n+1)th time-derivative of the magnetic field.
Uncertainty Relations for Some Central Potentials in N-Dimensional Space  [PDF]
Sami M. AL-Jaber
Applied Mathematics (AM) , 2016, DOI: 10.4236/am.2016.76047
Abstract: We study the uncertainty relation for three quantum systems in the N-dimensional space by using the virial theorem (VT). It is shown that this relation depends on the energy spectrum of the system as well as on the space dimension N. It is pointed out that the form of lower bound of the inequality, which is governed by the ground state, depends on the system and on the space dimension N. A comparison between our result for the lower bound and recent results, based on information-theoretic approach, is pointed out. We examine and analyze these derived uncertainties for different angular momenta with a special attention made for the large N limit.
On the Dynamics of Transition of a Classical System to Equilibrium State  [PDF]
Sami M. AL-Jaber
Applied Mathematics (AM) , 2018, DOI: 10.4236/am.2018.98062
Abstract:
In this work we consider a spring with one end is fixed and the other is connected to a block of mass M located on a horizontal rough table. The other side of the block is connected to a massless rope that passes over a frictionless pulley at the end of the table and a second block of mass m is hanged at the rope’s other end. For this system, we analyze and discuss its dynamics of motion as function of time when the second block is released. In particular, the displacement of the system at the end of each half-cycle of motion, the total distance, and the work done against friction are derived. An interesting result is obtained for the case when the table is frictionless. It is found that there is still a work done by friction whose magnitude is exactly the same as the stored energy in the spring.
Effect of a Magnetic Field on an Atomic Orbital  [PDF]
Sami M. AL-Jaber, AbdelRahman M. Abu-Labdeh
Journal of Modern Physics (JMP) , 2011, DOI: 10.4236/jmp.2011.21001
Abstract: We consider the effect of a magnetic field on the motion of an atomic electron in its orbit. The usual treatment deals with the change in magnetic dipole moment assuming the electron's speed changes but the radius of its orbit remains unchanged. We derive the change in the magnetic dipole moment allowing both the speed and the radius to change. The cases of fixed radius on one hand and of fixed speed on the other are treated as special cases of our general case.
Using Time Series of Satellite Images to Detect Vegetation Cover Change in Dhaka City  [PDF]
Sami Al Jaber, Amit Kumar Ghosh, Mallik Sezan Mahmud
Journal of Geographic Information System (JGIS) , 2014, DOI: 10.4236/jgis.2014.66054
Abstract: The spatial land cover pattern of Dhaka city is restlessly altering as it has highest growing rates among megacities. Due to high urbanization rates, land use is changing from natural to man-made along with resource extractions that accelerate the land cover changes. This study has evidently given the glimpse of the raising concern by assessing the loss of vegetation coverage of Dhaka Metropolitan Area using multi-temporal Landsat imageries. 20 years satellite data have been used to detect the vegetation cover changes in Dhaka city with an interval of 10 years. Study reveals that 66.87 square kilometer vegetation coverage of Dhaka Metropolitan Area is lost during the whole time period. The rate of loss of vegetation coverage is very severe in Dhanmondi, Gulshan, Uttara, Demra, Mirpur, Sabujbagh, Ramna, Mohammadpur, Kafrul, Shyampur and so on. The overall precision of my Landsat-derived vegetation coverage maps is 92.5%.
Some Aspects of an Infinite N-dimensional Spherical Potential Well
Sami M. Al-Jaber
Journal of Applied Sciences , 2002,
Abstract: Not Available
Application of Exponential Kernel to Laplace Transform  [PDF]
Sami M. AL-Jaber
Journal of Applied Mathematics and Physics (JAMP) , 2019, DOI: 10.4236/jamp.2019.75075
Abstract:
In this paper, the exponential decreasing kernel is used in Laplace integral transform to transform a function from a certain domain to another domain. It is shown, in a rigorous way, that the Laplace transform of the delta function is exactly one half rather than one, as it is believed. In addition, when this kernel is used in integral transform of attractive and repulsive Coulomb potential, it yields a finite definite value at the point of singularity.
Parallel Cascade Correlation Neural Network Methods for 3D Facial Recognition: A Preliminary Study  [PDF]
Sokyna M. Al-Qatawneh, Khalid Mohammad Jaber
Journal of Computer and Communications (JCC) , 2015, DOI: 10.4236/jcc.2015.35007
Abstract:

This paper explores the possibility of using multi-core programming model that implements the Cascade correlation neural networks technique (CCNNs), to enhance the classification phase of 3D facial recognition system, after extracting robust and distinguishable features. This research provides a comprehensive summary of the 3D facial recognition systems, as well as the state-of-the- art for the Parallel Cascade Correlation Neural Networks methods (PCCNNs). Moreover, it highlights the lack of literature that combined between distributed and shared memory model which leads to novel possibility of taking advantage of the strengths of both approaches in order to construct an efficient parallel computing system for 3D facial recognition.

Energy consideration in processes of transition to equilibrium state  [PDF]
Sami M. Al-Jaber, Abdel-Rahman M. Abu-Labdeh
Natural Science (NS) , 2011, DOI: 10.4236/ns.2011.32019
Abstract: A calculation of the energy loss due to a transition from non-equilibrium to equilibrium state is given. Three different physical systems are considered in this study: connecting an uncharged capacitor to a charged capacitor, emission of a photon from an excited atom, and releasing an object from a compressed spring. In this study, it is shown that a specific fraction of the total energy stored in a non-equilibrium system should be consumed to reach the equilibrium state.
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