Correction to: Putting genome-wide sequencing in neonates into perspective

The original version of this Article contained an error in the spelling of the author Pleuntje J. van der Sluijs, which was incorrectly given as Eline (P. J.) van der Sluijs. This has now been corrected in both the PDF and HTML versions of the Article

On minimal-time ship routing

Electrical Engineering, Mathematics and Computer Scienc

Over het optimaal routeren van schepen: IV Het berekenen van golfvelden uit windvelden op de Atlantische Oceaan.

In minimal-time ship routing there are two main problems: 1. The computation of wavecharts from windcharts. 2. The determination of the least time track for a ship given these wavecharts and a polar velocity diagram. The second problem has been treated in the foregoing report (Bijlsma en Van Rietschote, 1972 I, II en III). In this report the first problem is dealt with. Hereby we assume that the problem of (forecasting and) converting pressure charts into wind charts has been solved. In practice this is a delicate problem depending mainly on the accuracy with which the pressure charts are given. The computation of waves from windfields goes back to the second part of the nineteenth century when some empirical formulas were derived in order to descrive the wave-wing relation (for a review of some of these relationships one is referred to Sverdrup, Johnson and Fleming (1942) and Defant (1961)). The first theoretical attempt however was made by Sverdrup and Munk (1947), when the outbreak of world war II made it necessary to have sea and swell forecasts at one's disposal. Although in later years applications of the developments in statistical analysis made the foundations on which their theory (revised by Brettschneider (1952)) was based, very disputable, it is nevertheless still in rather wide use. In this report (section 1) a brief outline is given of a wave forecasting method due to Pierson (1952). In his theory the forecast of ocean waves is considered as an application of the theory the stochastic processes. In this section, moreover, some elementary aspects of nonlinear wave interaction are given. Based on results of the last mentioned theory a computerprogram has been constructed for the computation of wave fields on the North Atlantic. Applications are given and compared with results of manual treatment (section 3). The computerprogram and a flow diagram of it are added

Dielectric breakdown II: Related projects at the University of Twente

In this paper an overview is given of the related activities in our group of the University of Twente. These are on thin film transistors with the inherent difficulty of making a gate dielectric at low temperature, on thin dielectrics for EEPROM devices with well-known requirements with respect to charge retention and endurance and, finally, on thin film diodes in displays with unexpected breakdown properties

Parallelization of While Loops in Nested Loop Programs for Shared-Memory Multiprocessor Systems

Many applications contain loops with an undetermined number of iterations. These loops have to be parallelized in order to increase the throughput when executed on an embedded multiprocessor platform. This paper presents a method to automatically extract a parallel task graph based on function level parallelism from a sequential nested loop program with while loops. In the parallelized task graph loop iterations can overlap during execution. We introduce the notion of a single assignment section such that we can exploit single assignment to overlap iterations of the while loop during the execution of the parallel task graph. Synchronization is inserted in the parallelized task graph to ensure the same functional behavior as the sequential nested loop program. It is shown that the generated parallel task graph does not introduce deadlock. A DVB-T radio receiver where the user can switch channels after an undetermined amount of time illustrates the approach