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A three-dimensional (3-D) time-domain numerical scheme for simulation of ground penetrating radar (GPR) on dispersive and inhomogeneous soils with conductive loss is described. The finite-difference time-domain (FDTD) method is used to discretize the partial differential equations for time stepping of the electromagnetic fields. The soil dispersion is(More)
  • J Poul, M Straka
  • Acta chirurgiae orthopaedicae et traumatologiae…
  • 2003
PURPOSE OF THE STUDY Another three cases of periosteal tethers (focal fibrocartilaginous dysplasia) are reported. Until now only 54 children affected by this entity were described. Analysis of these three cases concerning clinical appearance, x-ray deformity, preoperative and histologic findings and the end-results of the own method of surgical treatment(More)
The workload of the NSF supercomputer center at the University of Illinois is decomposed into its major constituent programs, and performance characteristics of those programs are described in detail. The resulting data is compared with similar data obtained from standard benchmarks showing that applications level programs are clearly distinct from kernel(More)
PURPOSE OF THE STUDY Owing to advances in operative techniques and biotechnology, bone replacement biocompatible materials have recently come into focus for orthopaedic and trauma surgeons. Bone lytic lesions, such as tumorous bone defects, diseases simulating cancer, chronic inflammatory lesions or skeletal injuries, often require stabilisation of the(More)
agnostic workup because of elevated serum liver enzyme levels (γ-glutamyltransferase 53.94 μkat/L, reference range 0.00–0.63). A transabdominal ultrasound revealed dilated extrahepatic bile ducts, and on endoscopic ultrasound (EUS) the common bile duct (CBD) was dilated with hyperechoic fociwith no acoustic shadowing within, and a 20-mm hyperechoic(More)
  • M Straka
  • Acta chirurgiae orthopaedicae et traumatologiae…
  • 2013
PURPOSE OF THE STUDY Today arthroscopy remains the principal method in both the diagnosis and the therapy of knee injuries also in children and adolescents because serious knee ligament injuries, including those to the anterior cruciate ligament (ACL), are not rare in childhood. According to many authors, consequences of knee instability in children are(More)
Soft tissue sarcomas and primary bone tumours constitute very heterogenic group. Gold treatment standard is surgery in most of them. Nowadays the combination surgery with radiotherapy is preferred, because thanks new radiotherapeutic technology is possible to apply very high dose of radiation which necessary for local control of these tumours. The goal of(More)
Expedia users who prefer the same types of hotels presumably share other commonalities (i.e., non-hotel commonalities) with each other. With this in mind, Kaggle challenged developers to recommend hotels to Expedia users. Armed with a training set containing data about 37 million Expedia users, we set out to do just that. Our machine-learning algorithms(More)