160 research outputs found
Industry insights from NIZO: the latest innovation maintaining protein functionality
No full textThe need to preserve protein functionality is prompting food makers to explore 'milder processing' than traditional heat treatment. In his second monthly column, René Floris, NIZO Food Research Division Manager and member of the FoodNavigator expert advisory panel, explores the latest technological developments in this innovative field. Contains an interview with Peter de Jong, professor dairy process technology at Van Hall Larenstein
Industry insights from NIZO: sustainable fractionation and the future of food
No full textIt has been widely reported that around one-third of all the food produced globally is wasted. René Floris, NIZO Food Research Division Manager and member of the FoodNavigator expert advisory panel, asks Peter de Jong, NIZO's Principal Scientist in food processing, professor of dairy process technology at Van Hall Larenstein University of Applied Sciences and director of New Technology Development for Food at the Institute for Sustainable Process Technology, what role food fractionation and the smarter use of raw materials can play in tackling food waste and boosting sustainability
Dealing with uncertainty in flood management through diversification
No full textThis paper shows, through a numerical example, how to develop portfolios of flood management activities that generate the highest return under an acceptable risk for an area in the central part of the Netherlands. The paper shows a method based on Modern Portfolio Theory (MPT) that contributes to developing flood management strategies. MPT aims at finding sets of investments that diversify risks thereby reducing the overall risk of the total portfolio of investments. This paper shows that through systematically combining four different flood protection measures in portfolios containing three or four measures; risk is reduced compared with portfolios that only contain one or two measures. Adding partly uncorrelated measures to the portfolio diversifies risk. We demonstrate how MPT encourages a systematic discussion of the relationship between the return and risk of individual flood mitigation activities and the return and risk of complete portfolios. It is also shown how important it is to understand the correlation of the returns of various flood management activities. The MPT approach, therefore, fits well with the notion of adaptive water management, which perceives the future as inherently uncertain. Through applying MPT on flood protection strategies current vulnerability will be reduced by diversifying risk
‘Een forse gevel tusschen twee slanke torens gevat’: Het oorspronkelijke ontwerp van de westfaçade van de Grote Zaal
No full textThe front elevation of the Ridderzaal (Knights’ Hall) in the Binnenhof in The Hague is one of the best-known frontages in the country. The impressive facade was built in around 1295 by Count Floris V as a Schauseite or ‘best side’ of the stately hall. The front elevation and its two towers were recently the subject of building history research.
It is known that the elevation underwent major restoration between 1861 and 1900, but the key question explored in this article is to what extent the late thirteenth-century elevation was modified. Our research focused on modifications to the gable and the authenticity of the two flanking towers. A subsequent building history study has revealed that the gable wall line was altered several times during this period, ultimately resulting in a more massive gable.
As to the towers, it was previously unclear whether they were part of the original design. Because of their asymmetrical position and different dimensions it was surmised that they had not been built at the same time as the hall and may even have been heightened at a later date. A dendrochronological analysis conducted in 1998 dated the entablatures supporting the steeple to around 1295. However, because seventeenth-century wood was also encountered, it was speculated that the thirteenth-century timber had been recycled. A new analysis of the assembly marks on the entablatures supports the notion that they do indeed date from the building period, which in turn suggests that the current height of the towers is the original height: in other words, both towers were part of the thirteenth-century design.De voorgevel van de Grote Zaal of Ridderzaal van het Binnenhof te Den Haag is een van de meest bekende gevels van het land. De imponerende façade is omstreeks 1295 door graaf Floris V gebouwd als Schauseite van de monumentale zaal. De voorgevel met zijn twee torens is tijdens een recent uitgevoerd bouwhistorisch onderzoek onderwerp van nadere bestudering geweest.
Het is bekend dat de gevel tussen 1861 en 1900 sterk gerestaureerd is, maar de centrale vraag van dit artikel is in hoeverre de laat dertiende-eeuwse gevel is aangepast. Daarbij richtte het onderzoek zich voornamelijk op de aanpassingen van de topgevel en de oorspronkelijkheid van de twee flankerende torens. Een nieuwe bouwhistorische analyse laat zien dat de gevellijn van de topgevel in deze periode meerdere keren is aangepast waarbij de topgevel een stuk forser is geworden.
Van de torens stond tot nu toe niet vast dat ze tot het oorspronkelijk ontwerp behoorden. Door de asymmetrische positie en het verschil in afmetingen tussen de twee torens is wel gedacht dat de torens niet gelijktijdig met de zaal zijn gebouwd en eventueel later zijn verhoogd. De tafelmenten die de torenspitsen ondersteunen zijn in 1998 dendrochronologisch gedateerd op ca. 1295, echter doordat er ook zeventiende-eeuws hout is verwerkt is er destijds verondersteld dat het dertiende-eeuwse hout mogelijk is hergebruikt. Een nieuwe analyse van de telmerken van de tafelmenten maakt het aannemelijk dat de tafelmenten weldegelijk uit de bouwperiode stammen, waaruit blijkt dat de huidige hoogte van de torens de oorspronkelijk is: beide torens maakten deel uit van het dertiende-eeuwse ontwerp
Computing one-dimensional global manifolds of Poincaré maps by continuation
No full textWe present an algorithm to compute one-dimensional stable and unstable manifolds of saddle periodic orbits in a Poincaré section. The computation is set up as a boundary value problem by restricting the beginning and end points of orbit segments to the section. Starting from the periodic orbit itself, we use collocation routines from AUTO to continue the solutions of the boundary value problem such that one end point of the orbit segment varies along a part of the manifold that was already computed. In this way, the other end point of the orbit segment traces out a new piece of the manifold. As opposed to standard methods that use shooting to compute the Poincaré map as the k-th return map, our approach defines the Poincaré map as the solution to a boundary value problem. This enables us to compute global manifolds through points where the flow is tangent to the section -- a situation that is typically encountered unless one is dealing with a periodically forced system. Another major advantage of our approach is that it deals effectively with the problem of extreme sensitivity of the Poincaré map on its argument, which is a typical feature in the important class of slow-fast systems. We illustrate and test our algorithm by computing stable and unstable manifold in three examples: the forced Van der Pol oscillator, a model of a semiconductor laser with optical injection, and a slow-fast chemical oscillator. All examples are accompanied by animations of how the manifolds grow during the computation
De Medusa in de aegis van Hendrick de Keyser. Vorm en functie van een ornament op het grafmonument van Willem van Oranje (1614-1623)
No full textBoth in architecture and in art the head of Medusa is omnipresent and it hardly seems to need any further introduction. Nevertheless, this article discusses two specific ornaments of this type, namely the Medusa on the tomb of William of Orange, designed by Hendrick de Keyser (1565-1621) and the Medusa on the town hall of Antwerp, designed by Cornelis Floris (1513/14-1575). The author states that these two heads are part of the aegis of Minerva. The aegis is a sort of breast-plate that is part of the weaponry of this goddess. The Medusa thus is a part of a bigger whole that can be seen as an aegis.
The article demonstrates how in contemporary art literature (Van Mander, Ripa and Cartari) the aegis functions as a pars pro toto for Minerva, the deft Goddess of War and therefore, in an abstract sense, stands for sensible leadership in times of conflict. The article also aims to show that the aegis not only has an iconographic meaning, but that it also, in the cases of the town hall and the tomb, harks back to a votive offering that was part of classical architecture. This aegis therefore belongs to both architecture and art
Vita
No full textThe work consists of six contemporary pop songs, containing arrangements based on bossa nova harmonies, however without the bossa nova rythms. The pieces of music are partly bossa nova classics and partly originals.
Bossa nova harmonies have always inspired the author and he wondered whether these could be applied to contemporary music. The research part focused on dissecting the harmonies that form an integral part of bossa nova of the late 1950s and 1960s. This knowledge is then applied to rearranging songs from that era into contemporary music pieces deleting all bossa nova rhythms, as well as to newly written songs. Arrangements of lead and backing vocals play a key part, applying bossa nova harmonic progressions. The latter was more of a challenge for pop chord progressions. The author believes the “Waters of March/Joy” song is a fine example of how the concept works in practice.
The music will be released as an EP in the fall of 2023 by the artist Vita with some additional live recordings.https://remix.berklee.edu/graduate-studies-production-technology/1323/thumbnail.jp
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