We present infrared (0.97{2.45 micron) spectra of the intermediate polars PQ Gem (RE0751+14), BG CMi and EX Hya. The spectra show strong Paschen, Brackett and He I emission lines from the accretion disc/stream. The infrared continua of PQ Gem and BG CMi can be represented by blackbodies of temperatures 4500 K and 5100 K, respectively, or by power-laws of the form f / 0:6;0:9 , respectively, and...

This paper proposes metamodel optimization methodology based on multi-level fuzzy-clustering space reduction strategy with Kriging interpolation. The proposed methodology is composed of three levels. In the 1st level, the initial samples need partitioning into several clusters due to design variables by fuzzy-clustering method. Sequentially, only some of the clusters are involved in building me...

We have taken a 4-day spectroscopic observation and have been conducting a 13-day photometric study of the SU UMa-type dwarf nova, ER Ursae Majoris. The mean K-amplitude for the emission lines is 54± 8 km s and γ velocity is 8±4 km s from our spectroscopic results. A phase shift of 0.22 is also obtained. Our photometric observation confirms superhumps in normal outbursts of ER UMa and reconcile...

SCABOR is an approach for the 3-D lane detection and autonomous driving. Its main attribute is to diagnose the metrology of roads. It has a wide significance in determining the basic structure, the presence of humps and dips and gives a clear and cache information of the way .Our view on this paper is to apply SCABOR along with the application of the GLOBAL POSITIONING SYSTEM in autonomous driv...

The results of boxed dynamics (BXD) fully atomistic simulations of protein unfolding by atomic force microscopy (AFM) in both force clamp (FC) and velocity clamp (VC) modes are reported. In AFM experiments the unfolding occurs on a time scale which is too long for standard atomistic molecular dynamics (MD) simulations, which are usually performed with the addition of forces which exceed those o...

We report the discovery of a new AM Herculis binary (polar) as the optical counterpart of the soft X-ray source RXJ1724.0+4114 detected during the ROSAT all-sky survey. The magnetic nature of this V ∼ 17m object is confirmed by low-resolution spectroscopy showing strong Balmer and HeII emission lines superimposed on a blue continuum which is deeply modulated by cyclotron humps. The inferred mag...

The bumpy light-curve of the bright optical afterglow (AG) of gamma ray burst (GRB) 021004, its spectral evolution and its radio emission have been claimed to be unusual. In the Cannonball Model of GRBs that is not the case. The very early AG's shape is, as for GRB 990123, a direct tracer of the expected circumburst density profile. The unprecedented precision of the data allows for the " resol...

Abstract The peak frequencies of the two broad humps evident in spectral energy density blazars (SED) are time dependent and vary a lot between different blazars. However, their ratio most appears to be almost universal equal m e c 2 /4(1 + z ) ? p good approximation, where is electron mass, cosmic microwave background radiation, redshift blazar. We discuss possible origin such blazars: gamma-r...

Pedestrian crossings in the UK and US require people to walk at 1.2 m/s to cross the road in time; however a large proportion of older people do not walk this fast, potentially discouraging walking or putting older people at risk of injury. We use longitudinal data to investigate changes in walking speed, and ability to cross the road in time, at older ages. 31,015 walking speed measurements we...