This paper proposes new methods for the econometric analysis of outlier contaminated multivariate conditionally heteroscedastic time series. Robust alternatives to the Gaussian quasi-maximum likelihood estimator are presented. Under elliptical symmetry of the innovation vector, consistency results for M-estimation of the general conditional heteroscedasticity model are obtained. We also propose...

A new type of exact solutions for photogravitational restricted three-body problem (a case of spiral motion) is presented here. A key point is that we obtain the appropriate specific case of spiral motions from the Jacobian-type integral of motion for photogravitational restricted three-body problem (when orbit of small 3-rd body is assumed to be like a spiral). Besides, we should especially no...

The Mars Global Surveyor spacecraft, in a highly elliptical polar orbit, obtained vector magnetic field measurements above the surface of Mars (altitudes >100 kilometers). Crustal magnetization, mainly confined to the most ancient, heavily cratered martian highlands, is frequently organized in east-west-trending linear features, the longest extending over 2000 kilometers. Crustal remanent magne...

In this paper, a compact ultra wideband (UWB) monopole antenna with a band-notched characteristic is presented. The bandnotched characteristic is achieved by inserting a U-shaped slot in the half elliptical ring radiating patch. The measured bandwidth of the designed antenna for |S11| 6 −10 dB spans 3.1 GHz to 9.3 GHz with a notched band (|S11| > −10 dB) spanning 5.12GHz to 5.99 GHz. A quasi-om...

We have re-studied line-strength gradients of 80 elliptical galaxies. Typical metallicity gradients of elliptical galaxies are ∆[Fe/H]/∆ log r ' −0.3 which is flatter than the gradients predicted by monolithic collapse simulations. The metallicity gradients do not correlate with any physical properties of galaxies, including central and mean metallicities, central velocity dispersions σ0, absol...

30 ‘circular’ vs. oblique ‘elliptical’ anastomosis extended on the left PA, evaluating pressure and velocity profiles, and shear stress, from PA 31 origin to the bifurcation. ‘Elliptical’ anastomosis provides larger (s54% difference) cross-sectional area than ‘circular’ anastomosis. Velocity 32 contours showed important stagnation at PA bifurcation in ‘circular’ anastomosis and minimal in ‘elli...

High voltage cutout fuses have been used in 22 kV distribution systems as primary switching protection devices. We developed a current-limiting fuse with stainless steel wires which is low cost and simple design. It has confirmed that possesses better similar performance characteristics such shorter melting time than JEM rules.

Convolutional neural networks are capable of learning powerful representational spaces, which are necessary for tackling complex learning tasks. However, due to the model capacity required to capture such representations, they are often susceptible to overfitting and therefore require proper regularization in order to generalize well. In this paper, we show that the simple regularization techni...

This paper investigates limiting spectral properties of a high-dimensional sample spatial-sign covariance matrix when both the dimension observations and size grow to infinity. The underlying population is general enough include popular independent components model family elliptical distributions. first result shows that empirical distribution high dimensional converges generalized Marčenko-Pas...