Volume 32, Issue 1

 

ارسال های اخیر

  • ON THE DISTRIBUTION OF Z-SCORES 

    BEHBOODIAN, J.؛ ASGHARZADEH, A. (Springer, 2008-02-01)
    Let X ,..., Xn 1 be a random sample from a distribution with sample mean X and samplevariance S 2. In this paper we consider certain very general properties of the so-called “Z-scores"X X S i n i ( − )/ : = 1,...., . A ...

  • ON ENERGY DECAY OF AN N-DIMENSIONAL THERMOELASTICITY SYSTEM WITH A NONLINEAR WEAK DAMPING 

    TAHAMTANI, F. (Springer, 2008-02-01)
    We study the exponential decay of global solution for an n-dimensional thermo-elasticity systemin a bounded domain of ℜn . By using the multiplier technique and constructing an energy functional welladapted to the system, ...

  • α − SEPARABLE AND O-TOPOLOGICAL GROUP 

    Haghnejad Azar, Kazem؛ RIAZI, A. (Springer, 2008-02-01)
    We introduce some new concepts of topological spaces which say α − separable topologicalspace and O-topological group, α − first axiom, α − second axiom, and we find some relations betweenthem with some applications in ...

  • CONFORMAL VECTOR FIELDS ON TANGENT BUNDLE WITH A SPECIAL LIFT FINSLER METRIC* 

    PEYGHAN, E.؛ RAZAVI, A.؛ HEYDARI, A. (Springer, 2008-02-01)
    On a Finsler manifold, we define conformal vector fields and their complete lifts and prove that incertain conditions they are homothetic.

  • THE STRUCTURE OF DERIVATIONS FROM A FULL MATRIX ALGEBRA INTO ITS DUAL 

    ALIZADEH, R.؛ Esslamzadeh, Gholam Hossein (Springer, 2008-02-01)
    Let A be a unital algebra over a field of characteristic zero. We show that every derivation from( ) n M A into its dual ( ) n M A ∗ is the sum of an inner derivation and a derivation induced by a derivationfrom A into A∗

  • DIRAC STRUCTURES 

    SHAFIEI DEH ABAD, A. (Springer, 2008-02-01)
    In this paper we introduce the concept of Dirac structures on (Hermitian) modules and vectorbundles and deduce some of their properties. Among other things we prove that there is a one to onecorrespondence between the set ...

  • INVESTIGATION ON THE FLUX-BASED TORQUE-RIPPLE BEHAVIOR IN DTC BASED INDUCTION MOTOR DRIVES 

    KABOLI, Sh؛ ZOLGHADRI, M. R.؛ HAGHBIN, S.؛ ESKANDARI, P. (Springer, 2008-02-01)
    The efficiency of induction motors decreases at light loads. Efficiency optimizer control systemsadjust the motor flux value to achieve the best efficiency in a wide range of load variations. Reduced fluxoperation has some ...

  • CAPACITY ON FINSLER SPACES 

    Bidabad, Behroz؛ HEDAYATIAN, S. (Springer, 2008-02-01)
    Here, the concept of electric capacity on Finsler spaces is introduced and the fundamentalconformal invariant property is proved, i.e. the capacity of a compact set on a connected non-compact Finslermanifold is conformal ...

  • INTEGRAL CHARACTERIZATIONS FOR TIMELIKE AND SPACELIKE CURVES ON THE LORENTZIAN SPHERE 3 S1 

    KAZAZ, M.؛ UGURLU, H. H.؛ OZDEMIR, A. (Springer, 2008-02-01)
    V. Dannon showed that spherical curves in E4 can be given by Frenet-like equations, and he thengave an integral characterization for spherical curves in E4 . In this paper, Lorentzian spherical timelike andspacelike curves ...

  • PULLBACK CROSSED MODULES OF ALGEBROIDS 

    ALP, M. (Springer, 2008-02-01)
    In this paper, we present algebroids and crossed modules of algebroids. We also define pullbackcrossed module of algebroids.