Volume 7, Issue 3

 

ارسال های اخیر

  • Moditication Factor for Sizing Equation of Electrical Machines-Single and Three Phase Induction Motors(RESEARCH NOTE) 

    Honarparvar, S.؛ Faiz, Jawad. (Materials and Energy Research Center, 1994-08-01)
    Comparison between the results from the design procedure based upon the value of D2L (volume of iron) and IEC standard used by manufacturers indicates that the basic design equation of electrical machines must be modified ...

  • Theoretical Studies of Electrical Characteristics of the Nitrogen Laser 

    Ashrafi, A.؛ Golnabi, H. (Materials and Energy Research Center, 1994-08-01)
    A theoretical analysis of the circuits for a nitrogen laser driven by the Blumlein or capacitor charge transfer transmission line is given in detail. The electrical characteristics of the charge line for a special case of ...

  • Proposals for a Failure Criterion Applicable to Discontinuous Rocks 

    Fahimifar, A. (Materials and Energy Research Center, 1994-08-01)
    The existing failure criteria to evaluate discontinuous rocks are predominatly based on the relations between principal stresses at failure. None of the criteria has a direct reference to the magnitude of deformation as a ...

  • Safety Verification of Real Time Systems Serving Periodic Devices 

    Naghibzadeh, M. (Materials and Energy Research Center, 1994-08-01)
    In real-time systems response to a request from a controlled object must be correct and timely. Any late response to a request from such a device might lead to a catastrophy. The possibility of a task overrun, i.e., missing ...

  • A Unified Approach for Design of Lp Polynomial Algorithms 

    Zhang, Z. (Materials and Energy Research Center, 1994-08-01)
    By summarizing Khachiyan's algorithm and Karmarkar's algorithm forlinear program (LP) a unified methodology for the design of polynomial-time algorithms for LP is presented in this paper. A key concept is the so-called ...

  • Steep. Short-Crested Waves and Related Phenomena 

    Kolaini, A. R. (Materials and Energy Research Center, 1994-08-01)
    Steep, short-crested waves, as well as a large variety of three-dimensional propagating wave patterns have been created in laboratory, utilizing a plunging half-cone. Monochromatic waves, over a range of frequencies and ...

  • Tv and or Fm Transmitting Antennas Desien Using Computer Graphic System (RESEARCH NOTES) 

    Radji, A. (Materials and Energy Research Center, 1994-08-01)
    The purpose of this paper is three fold. First, the major theoretical pattern relationships of TV and/or FM transmitting antennas are dealt with. Secend, the computer calculation method and designing of such patterns using ...