Rigid registration is the process of identifying the correspondences between two overlapping shapes that were subject to a rigid transformation. Once the correspondences have been established, the underlying rigid transformation can be estimated in the weighted least squares sense with closed form solution. A correspondence is such a pair of points that while they are described in two different...

Complex airway diseases represent a therapeutic challenge and require multidisciplinary input. Surgery remains the definitive modality. Minimally invasive endobronchial techniques have resulted in symptom control and long-term improvements. The rigid bronchoscope remains the method of choice for the treatment of both benign and malignant central airway obstruction. However, it has limited use i...

AIM To analyse the occurrence of canal isthmuses in molars following root-end resection. METHODOLOGY The material consisted of 56 mandibular and 32 maxillary first molars subjected to periradicular surgery. Based on radiographic, clinical, as well as intraoperative status, only roots with associated pathological lesions were treated. In total, 124 roots were resected (80 mandibular and 44 max...

Business-critical legacy applications often rely on relational databases to sustain daily operations. Introducing Semantic Web technology in newly developed systems is often difficult, as these systems need to run in tandem with their predecessors and cooperatively read and update existing data.A common pattern is to incrementally migrate data from a legacy system to its successor by running th...

A data graph is a convenient paradigm for supporting keyword search that takes into account available semantic structure and not just textual relevance. However, the problem of constructing data graphs that facilitate both efficiency and effectiveness of the underlying system has hardly been addressed. A conceptual model for this task is proposed. Principles for constructing good data graphs ar...