Department of Mathematics, College of Science Al Baha University, Al Baha Kingdom of Saudi Arabia
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In this paper the author discusses Fuzzy or non-Fuzzy, the best defined management is fuzzy, i.e. it is better to use in governing a human centered system not the conventional mathematical apparatus (specially when the mathematical apparatus leads to extremely large computational efforts) but the apparatus of fuzzy sets and algorithms.
1,2Department of Computer Science, The University of Burdwan (India)
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Since e-learning totally depends on Internet, the transmission of mark sheet to the students from the administrator should be done very securely; otherwise, if the hackers reach the documents, then it may be very harmful for the students as well as for the corresponding e-learning institution also. By using, digital certificate the administrator can send the mark sheet securely to the students and also it helps in non –repudiation, one of the security issues in e-learning. The implementation of the object orientation model helps others in better understanding of the system. The other goals of object oriented implementations like code re-usability, data redundancy etc. can be madeby object oriented models. Here we will analysis the values of the metrics for two basic models of object oriented metrics: Chidamber and Kemerer metric (CK metric) and Metric for Object Oriented design metric (MOOD metric) based on the class hierarchy diagram of digital certificate transmitting from the administrator to students.
Physics Deptt., SVBPIC, Amritakhas, Pilibhit -262201 India
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The motion of strong spherical shock in non-uniform atmosphere has been investigated by Chester-Chesnell- Whitham method. This method is often used to study the freely propagation of shock waves in uniform and non-uniform medium. Though the effect of overtaking disturbances plays a significant role but for the sake of simplicity, its effect on the shock has neglected. The expressions for shock velocity, shock strength, particle velocity, and pressure are obtained using Bhowmick conditions.
Center for Advanced Research in Physical Sciences, Department of Physics, Fatima Mata National College (Autonomous), Kollam, Kerala India
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Wide inconsistency in indoor radon and thoron levels has been reported in the Monazite bearing densely populated regions in the coastal belt of Kerala, India. Inhalation doses are predominantly due to these gas progenies and the
unattached fraction is significant in determining radiation dose to the human lungs. The attached and unattached radon and thoron concentrations have been determined using direct radon (222Rn) and thoron (220Rn) progeny sensors (DRPS/ DTPS) in the Neendakara and Chavara hamlets of Kollam district, Kerala. The equilibrium equivalent concentration of the unattached fraction of 222Rn and 220Rn (EERCU and EETCU) was found to vary from 0.5 to 2.4 Bqm-3 and 0.1 to 0.2 Bqm-3, respectively. The concentrations of the attached fraction of 222Rn were found to be greater than the unattached fraction. The attached fraction of 220Rn progeny was in the range 1.01 to 3.8 Bqm-3. The total (attached + unattached) equilibrium equivalent 222Rn concentration (EERCA+U) and total (attached + unattached) equilibrium equivalent 220Rn concentration (EETCA+U) were found to vary from 8.8 to 22.5 Bqm-3 and 1.1 to 4 Bqm-3, respectively. Annual effective dose rates were also determined.
Professor, Department of Mathematics (Engineering Application) Intell Engineering College, Ananatapuramu Andhra Pradesh, 515004 India.
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In this paper, we have considered unsteady hydro dynamic poiseuille flow of an incompressible electrically conducting couple stress fluid through a porous medium between parallel plates, taking into account pulsation of the pressure gradient effect and periodic body acceleration with phase difference. The solution of the problem is obtained with the help of perturbation technique. Systematic expression is given for the velocity field, and the effects of the various governing parameters entering into the problem are discussed with the help of graphs. The shear stresses on the boundaries and the discharge between the plates are also obtained analytically and their behaviour computationally discussed with different variations in the governing parameters in detail.