Congenital fistulae between the tracheobronchial tree and oesophagus usually originate from the lower end of the trachea or right main bronchus. The case history is presented of a man in whom a fistula between the oesophagus and left main bronchus was not diagnosed until the age of 48.

Instance-level video segmentation requires a solid integration of spatial and temporal information. However, current methods rely mostly on domain-specific information (online learning) to produce accurate instance-level segmentations. We propose novel approach that relies exclusively the generic spatio-temporal attention cues. Our strategy, named Multi-Attention Instance Network (MAIN), overco...

In systems of centralized water supply, the givining-distribution complex (GDC) has highest cost, including pumping stations, pipes and supply networks: main, street, intra-quarter. The economic efficiency operation this directly depends on technical condition facilities equipment. But over time, characteristics both units pipelines deteriorate due to wear. Therefore, it is necessary periodical...

land- phone, like mobile, internet and fax is a communication device and has network externality effect. thus as the penetration coefficient increases, the network effect improves. the transmission of information via the word of mouth is the main source of enhancing the network externalities coefficient. in this article we have investigated the factors affecting the network externality coeffici...