Wing rock phenomenon is an undesired motion appears in high angles of attack where a rolling in the aircraft in positive and negative roll angles with specified amplitude and frequency is occurred. In this paper two adaptive controllers suggested to control the rolling dynamics under wing rock phenomenon for a delta wing aircraft with presence of disturbance. Disturbance was considered as unmat...

We consider a construction of approximate confidence intervals on the variance component σ 1 in mixed linear models with two variance components with non-zero degrees of freedom for error. An approximate interval that seems to perform well in such a case, except that it is rather conservative for large σ 1/σ , was considered by Hartung and Knapp in [6]. The expression for its asymptotic coverag...

We investigate in stable strange hadronic matter (SHM) the modification of the masses of the scalar (σ, σ∗) and the vector (ω, φ) mesons. The baryon ground state is treated in the relativistic Hartree approximation in the nonlinear σ-ω and linear σ∗-φ model. In stable SHM, the masses of all the mesons reveal considerable reduction due to large vacuum polarization contribution from the hyperons ...

The hyperstability theory of adaptive control systems is extended to encompass plants with unmodelled dynamics and disturbances. The analysis not only shows that leakage in the adaptive law is a natural way to avoid robustness problems (which is a known result in adaptive control theory), but also provides a new adaptive law that is a sort of signal-dependent σ-modification. The proposed adapti...

Let P (x, z) = z + ∑d i=1 ai(x)z d−i be a polynomial, where ai are real analytic functions in an open subset U of R. If for any x ∈ U the polynomial z 7→ P (x, z) has only real roots, then we can write those roots as locally lipschitz functions of x. Moreover, there exists a modification (a locally finite composition of blowing-ups with smooth centers) σ : W → U such that the roots of the corre...

Let Σ be a weighted homogeneous (singular) subvariety of C . The main objective of this paper is to present an explicit formula for solving the ∂-equation λ = ∂g on the regular part of Σ, where λ is a ∂-closed (0, 1)-form with compact support. This formula will then be used to give Hölder estimates for the solution in case Σ is homogeneous (a cone) with an isolated singularity. Finally, a sligh...