Context. The interplay of thermal and bulk motion Comptonization to explain the spectral evolution of neutron star LMXBs including transient hard X-ray tails is gaining a strong theoretical and observational support. The last momentum has been given by the advent of a new XSPEC Comptonization model, COMPTB, which includes thermal and bulk Comptonization. Aims. We used COMPTB to investigate the ...

OBJECTIVE To examine newspaper coverage of maternal health in three countries that have made varying progress towards Millennium Development Goal 5 (MDG 5): Bangladesh (on track), Rwanda (making progress, but not on track) and South Africa (no progress). DESIGN We analysed each country's leading national English-language newspaper: Bangladesh's The Daily Star, Rwanda's The New Times/The Sunda...

STAR is a large acceptance spectrometer capable of precision measurements of a wide variety of strange particles. We discuss the STAR detector, its configuration during the first two years of RHIC operation, and its initial performance for Au+Au collisions. The expected performance for strangeness physics and initial data on strange particle reconstruction in Au+Au collisions are presented. The...

The main design criteria of ballasted railway tracks include rail deflections, rail bending stresses, rail wheel contact stresses, sleeper bending moments and ballast sleeper contact pressures. Numerous criteria have been defined for the design of ballasted railway tracks owing to the various mechanical properties of track components and their complex interaction. Therefore, railway track desig...

The growth of supermassive black holes by merging and accretion in hierarchical models of galaxy formation is studied by means of Monte Carlo simulations. A tight linear relation between masses of black holes and masses of bulges arises if the mass accreted by supermassive black holes scales linearly with the mass forming stars and if the redshift evolution of mass accretion tracks closely that...

The traditional celestial navigation system(CNS) is used the moon, stars, and planets as celestial guides. Then the star tracker(i.e. track one star or planet or angle between it) and star sensor(i.e. sense many star simultaneous) be used to determine the attitude of the spacecraft. Pulsar navigation also be introduced to CNS. Maser is another interested celestial in radio astronomy which has s...

In this paper our focus is to study certain covering properties in topological spaces by using semi-open covers. A part of this article deals with Rothberger-type covering properties. The notions of s-Rothberger, almost s-Rothberger, star s-Rothberger, almost star s-Rothberger, strongly star s-Rothberger spaces are defined and corresponding properties are investigated.

The roles of the several parameters that influences railway track deterioration most, are examined in this research with a view to make railway track maintenance more effective and cost efficient. The results presented are based on a comprehensive study of railway track degradation on super structure, sub-structure and geometrical aspects. The changes in TQI (Track Quality Index), the track set...

In this paper we describe the Edinburgh University statistical machine translation system, as used for the TC-STAR 2006 evaluation campaign. We participated in the primary Final Text Edition track for the Spanish to English and English to Spanish translation tasks, using only the provided datasets for training our translation and language models. We obtained the highest WNM/Recall score in both...

For the condition where star-point target detection and tracking real-time. This paper proposed a method of star-point target detection and tracking. The method includes two major steps, target detection and target tracking. In the detection stage, based on difference of inter-frame image in sequences, an adaptive threshold has designed. After morphological filtering and regional connectivity f...