1,721,060 research outputs found
Havenmonding en zandtransport bij Parachique
No full textIn this report the sediment transport at Parachique, Peru, is calculated. This has been done in two different ways. First the Bijker method has been applied. This has been done by taking the significant wave height as representative for the wave spectrum and by chosing an equivalent wave height as representative for the significant wave height distribution for every 100 sector of.wave direction. Then theories about spiral bays, Wind and Silvester, have been studied and the sediment transport at Parachique is computed by using methods based on spiral bay theories. Finely by confronting the results of the two methods it has been concluded that the sediment transport at Parachique shbuld be of 70.000 m3/jear. Parachique, a fishing port in the north of Peru, has the difficulty of a shallow and unstable port entrance. These difficulties are concentrated in the mouth of the tidal inlet wherein Parachique is situated. In the first part of this report the present situatian of the tidal inlet is qualified using methods of Escoffier and Per Bruun. Then a solution of the problem is studied in terms of civil constructions, trying to find a solution suitable for a place like Parachique. Finally an off-share breakwater, which in part of the chosen solution, is dimensioned. Deel I: 'Brandingstroom bij Parachique", uitgevoerd bij de vakgroep vloeistofmechanica, is niet beschikbaar.kustwaterbouwkundeHydraulic EngineeringCivil Engineering and Geoscience
A method of computation of unsteady wave-driven coastal currents: Test-cases of RIPCEL: report on mathematical investigation
No full text
Impact of sea level rise on society
No full textReport of a project planning session in Delft (29-29/8/1986) and contains: Framework of analysis and recommendations; policy analysis; an outline of the contributions to the workshop; the lower countries and a higher Atlantic; The cause and effects of sea level rise; sea level rise on the awakening Earth; the data acquisition of trends observed in global mean sea level; estimating the impact of inundation; implications from the Mississippi delta; Ecological effects of a rapid relative increase of sea level; Some policy-oriented observations concerning sea level rise; Evaluations of the impacts of three scenarios of sea level rise on flood protection in the Netherlands; Impact of a rapid rise of the sea level on flood protection and water management of low-lying coastal areas; Economic impacts of sea level rise and the evaluation of counter-strategy scenarios; some societal consequences of sea level rise
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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