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A Mean Value Analysis (MVA) approximation is presented for computing the average performance measures of closed multiclass queueing networks containing non pre-emptive Head Of Line (HOL) and Pre-empt Resume (PR) priority centers. The approximation has the same storage and computational requirements as MVA thus allowing computationally efficient solutions of(More)
A Multiclass Queueing Network model (MQN) is partitioned into a set of disjoint subnetworks. Population constraints are applied to each subnetwork such that within each subnetwork each population chain is either subject to an individual population constraint, or a group of chains may be subject to a common (shared) population constraint. Such population(More)
Supplementation of various cultures of white rot fungi with tryptophan was found to have a large stimulatory effect on lignin peroxidase activity levels. This enhancement was greater than that observed in the presence of the lignin peroxidase recycling agent veratryl alcohol. Using reverse transcription-PCR, we found that tryptophan does not act to induce(More)
A terrestrial laser scanner measures the distance to an object with a precision in the order of millimeters. The quality of each single point in a point cloud affects post-processing applications, such as deformation analysis or 3D modeling. The quality of a scan point is influenced by four major factors: instrument calibration, atmospheric conditions,(More)
1 both graduated at the Faculty of Geodetic Engineering of the Delft University of Technology. They are currently engaged in the development of mathematical models for the GPS data processing in surveying and geodesy. ABSTRACT In the theory of integer least-squares ambiguity estimation and validation, a central role is played by the ambiguity search space.(More)
1 both graduated at the Faculty of Geodetic Engineering of the Delft University of Technology. They are currently engaged in the development of mathematical models for GPS data processing in surveying and geodesy. ABSTRACT Precise relative positioning based on a short observation time span yields ambiguities that are heavily correlated , together with(More)
Biography Peter Teunissen is professor in Mathematical Geodesy and Positioning. Paul de Jonge and Christiaan Tiberius 1 both graduated at the Faculty of Geodetic Engineering of the Delft University of Technology. They are currently engaged in the development of mathematical models for the GPS data processing in surveying and geodesy. Abstract One of the(More)
The white-rot fungus Bjerkandera sp. strain BOS55 excretes at least seven lignin peroxidase (LiP) isozymes. Two of these, LiP-2 and LiP-5 (molecular weight 40-42 kDa), were purified to homogeneity. Both isozymes had the same N-terminal amino acid sequence which showed strong homology with LiP isozymes produced by other white-rot fungi. The kinetics of both(More)