some scholars have argued that there is a negative correlation between the onset age of l2 acquisition and performance on different measures of l2 knowledge. a kind of biological scheduling is assumed to be responsible for this maturational constraint on language development. the present study asks whether and to what extent critical period effects can be found for universal properties of langu...

preventive maintenance scheduling is to perform a series of tasks that prevents or minimizes production breakdowns and improves the reliability. mathematical models have been developed to solve the preventive maintenance scheduling problem. there are several limitations in the prior work in this area of research. craft combinations are assumed to be given. the craft combination problem concerns...

In this paper, we investigate complexity of anisotropic cylindrical object under the influence electromagnetic field in f(G, T) theory, where G and T indicate Gauss–Bonnet term trace stress–energy tensor, respectively. For purpose, calculate modified equations, non-conservation equation mass distributions that assist comprehending structure astrophysical objects. The Riemann tensor is divided i...

‎In this paper we study the dynamics of the 2D-motion of a particle of monolayer‎. First we consider the usual physical time component and the plan manifold R2, having the polar coordinates. Then a geometric approach to nonholonomic constrained mechanical systems is applied to a problem from the two dimensional geometric dynamics of the Langmuir-Blodgett monolayer‎. We consider a constraint sub...

Soft continuum robots require differential control of channel pressure across several modules to trace 3D trajectories at the tip. For current designs such actuators, sheathing is required prevent radial expansion when chambers are pressurized. With recent development soft materials additive manufacturing, printing has become a promising fabrication method for robots. However, most actuators ba...

in this paper, the effect of financial liberalization on household’s budget liquidity constraint is analyzed with the use of an error correction model. financial liberalization will decline liquidity constraint, with expanding means of making future incomes available for present consumption. here a financial liberalization index for iran is defined using principal component analysis technique, ...

the objective of this study is to examine the effect of mispricing on firm’s investment behavior and capital structure. it also tests the role of the level of financial constraints in the relationship between mispricing , investment and capital structure. using data of 110 firms of tehran stock exchang from 1384-1389, results indicated that mispricing has negative impact to firms investment. ho...

In this paper, we propose a new sequential quadratic semidefinite programming (SQSDP) method for solving degenerate nonlinear programs (NSDPs), in which produce iteration points by sequence of stabilized (QSDP) subproblems, derive from the minimax problem associated with NSDP. Unlike existing SQSDP methods, proposed one allows us to solve those QSDP subproblems inexactly, and each is feasible. ...