122,839 research outputs found
Exceedance of Critical loads for N – Calculations based on tissue N content of lichens and modelled N deposition data in Germany
No full textBoltersdorf S, Schaap M. Exceedance of Critical loads for N – Calculations based on tissue N content of lichens and modelled N deposition data in Germany. Presented at the 45th annual conference of the Ecological Society of Germany, Switzerland and Austria (GFOe), Goettingen (Germany)
J. J. Schaap, Ueber Wissen und Selbstbewusstsein, 1947
No full textN. M. J. J. Schaap, Ueber Wissen und Selbstbewusstsein, 1947. In: Revue des Sciences Religieuses, tome 23, fascicule 3-4, 1949. p. 416
Scribere puchre potes si posteriora notes. On writing-masters, sheets and tracts
No full textSchaap Barbara. Scribere puchre potes si posteriora notes. On writing-masters, sheets and tracts. In: Scriptorium, Tome 59 n°1, 2005. pp. 51-73
Headbangen of hiphoppen: wat heeft dat nou met kleur te maken?
No full textWie het terrein van een willekeurig groot muziekfestival opwandelt zoals Lowlands, Rock Werchter, Glastonburry of Coachella is geneigd te denken dat muziek verbindt. Maar waarom is rock ‘n’ roll dan vooral ‘wit’ en soul of hiphop vooral ‘zwart?’ Dat komt, onder andere, door structurele ongelijkheid in de samenleving. Die is zeer bepalend voor ‘de kleur’ van de muziek, zegt cultuursocioloog Julian Schaap
Headbangen of hiphoppen: wat heeft dat nou met kleur te maken?
No full textWie het terrein van een willekeurig groot muziekfestival opwandelt zoals Lowlands, Rock Werchter, Glastonburry of Coachella is geneigd te denken dat muziek verbindt. Maar waarom is rock ‘n’ roll dan vooral ‘wit’ en soul of hiphop vooral ‘zwart?’ Dat komt, onder andere, door structurele ongelijkheid in de samenleving. Die is zeer bepalend voor ‘de kleur’ van de muziek, zegt cultuursocioloog Julian Schaap
A Multi-Language Comparison of Influences on Author Verification using Character N-Grams
No full textWe create a new multi-language corpus for author verification based on Wikipedia talkpages, and evaluate the influence that differences in topic and time have on character n-gram author profiles. Topic alignment between two texts is found to increase author verification precision, and an authors writing style is found to change over time, but not more significantly after 3 years than after 1 year.Information ArchitectureWISElectrical Engineering, Mathematics and Computer Scienc
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
The vanishing author in computer-generated works: a critical analysis of recent Australian case law
No full textAbstract
The use of software is ubiquitous in the creation of many copyright works, yet the requirement in copyright law that every work have a human author who engages in independent intellectual effort means that its use may prevent copyright subsistence. Several recent Australian cases have refocused attention on authorship as an essential criterion of copyright subsistence, and these cases suggest that much computer-produced output may be authorless and thus lack copyright protection. This article, the first in a two-part series, analyses how each case deals with the question of authorship of computer-produced works and why the use of software diminishes copyright protection for a significant number of computer-generated works. The article critiques the application of conventional notions of human authorship developed in the pre-computer age to modern productions and suggests alternative approaches to authorship that satisfy both the major objectives of copyright policy and the need to adapt to the computer age. The article argues that, without a broader judicial approach to authorship of computer-generated works, Parliament must remedy the lacuna in protection for these ‘authorless’ works. Possible solutions for reform are suggested. In a forthcoming article, the author comprehensively examines those reform proposals
The Social Amoeba <i>Polysphondylium pallidum</i> Loses Encystation and Sporulation, but Can Still Erect Fruiting Bodies in the Absence of Cellulose
No full textAmoebas and other freely moving protists differentiate into walled cysts when exposed to stress. As cysts, amoeba pathogens are resistant to biocides, preventing treatment and eradication. Lack of gene modification procedures has left the mechanisms of encystation largely unexplored. Genetically tractable Dictyostelium discoideum amoebas require cellulose synthase for formation of multicellular fructifications with cellulose-rich stalk and spore cells. Amoebas of its distant relative Polysphondylium pallidum (Ppal), can additionally encyst individually in response to stress. Ppal has two cellulose synthase genes, DcsA and DcsB, which we deleted individually and in combination. Dcsa- mutants formed fruiting bodies with normal stalks, but their spore and cyst walls lacked cellulose, which obliterated stress-resistance of spores and rendered cysts entirely non-viable. A dcsa-/dcsb- mutant made no walled spores, stalk cells or cysts, although simple fruiting structures were formed with a droplet of amoeboid cells resting on an sheathed column of decaying cells. DcsB is expressed in prestalk and stalk cells, while DcsA is additionally expressed in spores and cysts. We conclude that cellulose is essential for encystation and that cellulose synthase may be a suitable target for drugs to prevent encystation and render amoeba pathogens susceptible to conventional antibiotics.</p
Modelling the effects of submerged breakwaters in a wave basin: 2DH simulations of tests with Delft2D-MOR
No full textThis report is the result of a master thesis ofthe author, student at Delft University ofTechnology, Faculty of Civil Engineering. In this report a simulation oftests with submerged breakwaters, parallel to the shoreline, in a wave basin, are carried out with the morphodynamic model Delft2D-MOR. This 2-dimensional horizontal model was developed by DELFT HYDRAULICS. The aim of this thesis is to find out whether and how this model is able to simulate these tests with submerged breakwaters, and to investigate the effects of these breakwaters on profile development. The conditions ofthe experiments are used as input for the model. One simulation without breakwaters and two simulations with different breakwater configurations are carried out. Comparison of model results with measurement data rom the experiments shows that the model is able to simulate some hydrodynamic and morphological processes induced by the submerged breakwaters. Wave heights in the vicinity ofthe obstacles are reduced because of wave dissipation over the breakwaters. Flow circulation patterns occur induced by water level gradients. Sediment is mainly transported from behind the breakwaters towards and through the gaps seaward. However, there are still quite some differences between model and experimental results. Large amounts of sediment are eroded near the shoreline and close behind the breakwaters, which was not measured during the experiments. Apparently inaccuracies in modelling appear at the boundary of sea and land (original dry points remain dry, bottom gradients are irrealistic large), and at the location of submerged breakwaters where the modelling ofwave behaviour is not adequate. Also problems with resolution of computational grid arise at the location of submerged breakwaters. A higher resolution is needed in order to compute realistic flow velocities close behind the submerged breakwaters. Obviously a lot ofwork has to be done to improve the 2DH model results such that it can be a useful tooI for modelling the effects of submerged breakwaters on a beach profile.Civil Engineering and Geoscience
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