• Register
  • Login
  • Archives

    Volume 1 Number 5 October 2015

    Is Schrodinger Equation Describing A Turbulent Flow?


    Pages: 99-101
    Authors: Spiros Koutandos ; Jaime B.Vigo
    Abstract
    In this article we give a Navier-Stokes like equation with complex variables starting from Schrodinger equation. Two emerging quantities, alpha – describing the force density- and Omega-describing the current density rotation- are found. The flow processes two dimensional characteristics. A definition of pressure arises. The terms in this equation are well separated in real and imaginary parts. The article might be said to give some justification in favour of the ether. What is primary in all these is the description of the velocity in terms of the gradient of an unknown quantity, the wave function. 



    DC Conductivity of Composite Silicon Thin Films


    Pages: 92-98
    Authors: Vladimir Tudic ; Mario Marochini
    Abstract
    Amorphous-nano-crystalline silicon composite thin films (a-nc-Si:H) samples were synthesized by Plasma Enhanced Chemical Vapor Deposition technique. The measurement of DC conductivities was accomplished using Dielectric spectroscopy (Impedance Spectroscopy) in wide frequency and temperature range. In analysis of impedance data, two approaches were tested: the Debye type equivalent circuit with two parallel R and CPEs (constant phase elements) and modified one, with tree parallel R and CPEs including crystal grain boundary effects. It was found that the later better fits to experimental results properly describes crystal grains dielectric effect and hydrogen concentration indicating presence of strain. The amorphous matrix showed larger resistance and lower capacity than nano-crystal phase. Also it was found that composite silicon thin film cannot be properly described by equivalent circuit only with resistors and constant phase elements in serial relation.



    A Study of Microscopic Dynamics of Pedestrian Evacuation in High Rise Building


    Pages: 86-91
    Authors: Lim Eng Aik
    Abstract
    Numerous evacuation models are developed since decade ago in order to offer an appropriate design to estimate the required time for evacuating from a variety of places with various conditions. Thus, high rise traffic buildings found in governmental or huge company are essential to accurately evaluate the require time for evacuation process in order to ensure the safety of pedestrians. Thus, in order to fulfil this requirement, various models in pedestrian dynamics system, either as a whole or only in psychological interaction among pedestrians is developed during the past decade until now. However, most of the existing models only discussed their application in ground level with limited number of pedestrian and without the presence staircase. Therefore, this paper presents a model that simulates a large-scale pedestrian evacuation process in a high rise building, and provides some recommendation for improving the evacuation flow and increase public safety. From the simulation results, it shows that our proposed design for the study area improved in both the evacuation times and flow.