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- Wijbenga, J.H.A. (author) report 1993
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Bout, B.J. (author)Dynamic Channel Selection is a mechanism for selecting communication channels based on the actual, measured, signal quality. It is used in wireless communication systems to improve the adaptability to traffic intensity fluctuations, resulting from small cell sizes. The Digital European Cordless Telecommunications (DECT) standard Dynamic Channel...master thesis 1993
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- Akkerman, G.J. (author) report 1993
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Van Linden, O.L. (author)In this report the performance of an error-correcting code on a wide-band frequency selective Rayleigh fading channel with an OFDM- based transmission scheme is estimated by means of an analytical model. In the European dTTb project, a transmission scheme for a new digital terrestrial TV system is under development. This scheme uses OFDM to...master thesis 1993
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Bernard, R.S. (author), Schneider, M.L. (author)Without some correction for the interaction between lateral curvature and vertically nonuniform velocity, depth-averaged numerical models cannot predict the gradual migration of high velocity toward the outside of channel bends. Conventional depth-averaging does not account for the curvature-induced secondary flow that gives rise to the...report 1992
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Hoekstra, A.J. (author)The pen-computer is studied as a terminal to generate line drawings. These line drawings can be raster scanned and coded with Modified Huffman Code (MHC) as in G3- facsimile, or curve tracing and Differential Chain Coding (DCC) can be applied. The coding methods of both codes are compared and the data compression ratios are studied theoretically...master thesis 1992
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Nederlof, L. (author)Considering the growing interest in data broadcasting, a full television channel may be used for these services. In this report such a system is described as an extension of the current teletext system. The different types of data that can be transmitted are distinguished and grouped, after which a model is set up for calculating the performance...master thesis 1992
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Kerkhoff, A.M. (author)The performance of packet switched data traffic in the mobile frequency reuse network is analysed in terms of probabilty of successful packet reception and spectrum efficiency. Results for the downlink show that maximum spectrum efficiency occurs at small cluster sizes. The inherent high level of interference results, however, in low probability...master thesis 1992
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Dongeren, A. (author)In this report, a model is derived which simulates the behavior of channels and flats in a tidal basin after a change in the exogenous parameters. In chapter 1, a short introduction is given about the context in which this research has been done. Chapter 2 discusses the general features of the tidal inlet system as well as its formation and...master thesis 1992
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- Eysink, W.D. (author), Hoekstra, A. (author), Hoozemans, F.M.J. (author) report 1992
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- Oosterlee, C.W. (author), Wesseling, P. (author) report 1992
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- Vermeulen, C.J.M. (author) report 1990
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Volp, C. (author)This study deals with the design of water management systems. Attention is focused on that phase in the design process in which variants are developed and evaluated with emphasis on the evaluation. The proposed evaluation procedure combines an economic evaluation with an evaluation of the hydraulic qualities- The economic evaluation implicates...doctoral thesis 1989
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Dominske, D. (author)1.0 Determination Of Forces Generated By Moving Water 1 1.1 Forces Due To Flowing Water 1 1.2 Forces Due To Wave Action 8 2.0 Resisting Forces Provided By Erosion Proteetion 11 2.1 ARMORFORM Mat Characteristics 11 2.2 Resisting Forces On Channel Bottom 12 2.3 Resisting Force On Slopes 17 2.4 Additional Resisting Force Given By Anchors 18 3.0...report 1989
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Van de Kraan, A. (author)waterverlies in waterlopen treedt vooral op in gebieden waar het water stroomt over een sterk doorlatende bodem met een lage grondwaterstand. Over de wijze waarop de afstroming door de bodem plaatsvindt, en de invloed daarvan op het verloop van de waterdiepte, is nog weinig bekend. Door Schropp (1987) is een differentiaalvergelijking opgesteld...master thesis 1989
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Wang, X.K. (author)Experiments to measure forces on objects in open channel flow behind a bacward facing stepreport 1988
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Beck, S.M. (author)A new model for bed topography is developed herein which accounts for phase lag and the influence of the width to depth ratio. This model is used to analyze four sets of data: two from laboratory channels and two from natural channels. Good agreement is found between the actual and the predicted bed topography. An iterative, two-dimensional...report 1988
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Chen, Y.H. (author), Cotton, G.K. (author)Flexible linings provide a means of stabilizing roadside channels. Flexible linings are able to conform to changes in channel shape while maintaining the overall lining integrity. Permanent flexible lining such as riprap, gravel, or vegetation reinforced with synthetic mat are suitable for hydraulic conditions similar to those requiring rigid...report 1988
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Qing, Y.X. (author)This report deals with experimental research into the wind profile and turbulent current distribution measurements in a wind-water tunnel. Host attention was paid to the water velocity profile as influenced by the wind. It is confirmed that the velocity distribution of the current essentially follows the log law near the air-water interface as...report 1987
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Versteeg, M.H.J.B. (author)This report describes the results of a feasibility study into some aspects of a proposed METEOSAT image data compression unit. The study was performed to support the preparation of a proposal for ESOC. For the considered algorithms (ESTEC 1 & MEANDER 1) an estimate of the needed processing power based on the 68000 instruction set was made. This...report 1986