Algorithms underlying the automatic model-building functionality of the ARP/wARP software suite are presented. Finding the most likely set of Calpha atoms from a given set of atoms is formulated as a constrained integer programming problem. The objective function is a density-weighted score for the match between observed and expected chain conformation. Graph-search algorithms are presented tha...

In the field of disk-based parallel database management systems exists a great variety of solutions based on a shared-storage or a shared-nothing architecture. In contrast, main memory-based parallel database management systems are dominated solely by the shared-nothing approach as it preserves the in-memory performance advantage by processing data locally on each server. We argue that this uni...

Frequent freezes and crashes on current systems bring tremendously heavy loads to the system administration, directly resulting in an undesirable increase on the total cost of ownership (TCO). Obviously, it is time to broaden the long lasting performance-dominated research focus, which has neglected other aspects of computing such as dependability, availability and stability. Deeming that softw...

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.

The building sector accumulates approximately a third of the final energy consumption. Consequently, the improvement of the energy efficiency in buildings has become an essential instrument in the energy policies to ensure the energy supply in the mid to long term moreover is the most cost-effective strategy available for reducing carbon dioxide emissions This paper is studying the main objecti...

The use of timber as structural building material is growing and a greater number firms are looking to enter this raising market. Erecting complex usually involves combining the work architects, engineers, builders, suppliers and/or supplier–builders, all them having their own business models. purpose research was uncover specific nature models in structure industry. First, thorough mapping the...