Abstract The first section of the narrow-gauge railway line Septemvri-Dobrinishte was put into operation in distant 1926, and last sixth stage it completed 1945. It is single line, non-electrified, with a track gauge 760mm, which makes unique for Bulgaria Balkans. Apart from its gauge, impresses spiral ascents, maximum longitudinal slopes - up to 32 ‰, minimum radii horizontal curves 50m highes...

The base isolation systems are among the passive control devices that have been used over the last three decades to limit the seismic-induced response of structures. In this regard, the Uniform Building Code provisions (UBC) has incorporated a special section for the seismic design of base isolated structures since its 1991 edition. Due to the importance of the behavior of these structures unde...

The LEED pattern of clean (101) surfaces of Au show a characteristic (1 X 2) superstructure. The diffuseness of reflections in the reciprocal [OlO] direction is caused by onedimensional disorder of chains, strictly ordered into spatial [lo]] direction. There is a transition from this disordered superstructure to the normal (1 X 1) structure at 420 r 15°C. The angular profiles of the (04) and (0...

In this paper, we present a Chinese word segmentation system which is consisted of four components, i.e. basic segmentation, named entity recognition, error-driven learner and new word detector. The basic segmentation and named entity recognition, implemented based on conditional random fields, are used to generate initial segmentation results. The other two components are used to refine the re...