We analyze the problem of computing the minimal labels for a network of temporal relations in the Point Algebra. van Beek proposes an algorithm for accomplishing this task which takes O(max(n 3 ; n 2 m)) time (for n points and m 6 =-relations). We show that the proof of the correctness of this algorithm given by van Beek and Cohen is faulty, and we provide a new proof showing that the algorithm...

When we last month interviewed Professor Klaas Jan Beek, Congress Director and former ITC rector, he mentioned (off the record) the name of Martien Molenaar as a member of the hard core photogrammetric tribe at ITC, which had yet to be convinced that the future of the institute lay in RS and GIS. In 1983 Molenaar was appointed professor at Wageningen Agricultural University (WAU), where Beek ha...

Van de Beek et al. present new important data concerning the clinical outcome of patients with alcoholism and pneumococcal meningitis. The data was derived from a subgroup analysis of the patient population of their comparative key study on neuropsychological sequelae after pneumococcal versus meningococcal meningitis (van de Beek et al., 2002). With respect to our paper, they raised three issu...

Materials and methods: One hundred eighty 21-day-old Yorkshire-Landrace pigs were randomly assigned to five treatments. Treatments were the unsupplemented, unmedicated basal diet (Control) and the basal diet supplemented with either 4.41 g per tonne flavomycin (Huvepharma, Inc, Peachtree City, Georgia; Flavomycin), 1.5 kg per tonne oregano oil (Van Beek Scientific, Orange City, Iowa; Oregano), ...

BEEK YOKE CHIN, AMIR MOHSENIN, SU XIA LI, AUGUSTINE M. K. CHOI, AND MARY E. CHOI Toxicological Sciences, Environmental Health Sciences, and Department of Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland 21205; and Sections of Pulmonary and Critical Care Medicine and Nephrology, Department of Internal Medicine, Yale University School of Medicine and the Veterans Affairs Conn...