15 research outputs found
Artificial Intelligence and Social and Gender Justice Activism in MENA: Spaces of co-optation, engagement and resistance
No full text
Artificial Intelligence (AI) is being adopted and deployed across the MENA region in in ways that threaten to deepen existing inequalities and restrict rights. From surveillance technologies such as facial recognition, predictive policing, and smart cities, to algorithmic biases on social media and gig platforms, AI is reshaping civic space, labour markets, and gender dynamics. In conflict and humanitarian settings, AI has already intensified harm, most notably in Israel’s genocide in Gaza. The paper highlights risks to gender and social justice, power imbalances, and emerging feminist and regional responses.
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Human Risk of Fire: Building a decision support tool using Bayesian networks
No full textSafety Science GroupTechnology, Policy and Managemen
Postmodern lokaal volkshuisvestingsbeleid; balanceren tussen doelgroep, kernvoorraad en herdifferentiatie
No full textOTB Research Institute for the Built Environmen
Primal spaces and quasihomeomorphisms
No full textIn [3], the author has introduced the notion of primal spaces.
The present paper is devoted to shedding some light on relations between quasihomeomorphisms and primal spaces.
Given a quasihomeomorphism q from X to Y , where X and Y are principal spaces, we are concerned specically with a main problem: what additional conditions have to be imposed on q in order to render X (resp.Y ) primal when Y (resp.X) is primal
Enzymic analysis of the crabtree effect in glucose-limited chemostat cultures of Saccharomyces cerevisiae
No full textApplied Science
De l'Amérique du Nord au projet hémisphérique : les États-Unis, la clause sociale et l'art de la vertu démocratique
No full textLe texte suivant a pour but d'interroger les motivations américaines à promouvoir l'instauration d'une clause sociale venant garantir le respect de quelques droits fondamentaux des travailleurs au sein des accords commerciaux et financiers qu'ils contractent depuis la fin des années 1980. Nous y abordons I'ALENA et le projet d'intégration hémisphérique comme deux cas pour lesquels les États-Unis ont tenté - et tentent encore pour ce qui est de la ZLEA - d'adjoindre une clause sociale. Pour la majorité des commentateurs de la question, une telle disposition répondrait essentiellement à des motivations d'ordre protectionniste et parfois éthique, émanant surtout des groupes d'intérêt. Nous proposons plutôt une lecture de cette question axée sur les intérêts, et dans une moindre mesure, les idéaux, de politique internationale des États-Unis et tentons ainsi d'articuler une cohérence entre « unilatéralisme agressif » en matière économique et « élargissement démocratique » sur le plan diplomatique.The following text examines American motives in advocating a social clause that seeks to guarantee a number of fundamental labour rights under the trade and financial agreements the u.s. has signed since the late 1980s. NAFTA and the proposed Western Hemisphere Free Trade Area are discussed as two cases where the United States has tried - and is still trying in the case of the VVHFTA - to add a social clause. For most observers concerned with this issue, such a provision is essentially a response to protectionist and, in some cases, ethical motives held chiefly by special interest groups. The author proposes a reading of this issue based on the interests and, to a lesser extent, the ideals of American international policy. He thus tries to describe how a unilaterally aggressive economic stance can be consistent with a diplomatic stance favouring the spread of democracy
A Modular Approach for Synchronized Wireless Multimodal Multisensor Data Acquisition in Highly Dynamic Social Settings
No full textExisting data acquisition literature for human behavior research provides wired solutions, mainly for controlled laboratory setups. In uncontrolled free-standing conversation settings, where participants are free to walk around, these solutions are unsuitable. While wireless solutions are employed in the broadcasting industry, they can be prohibitively expensive. In this work, we propose a modular and cost-effective wireless approach for synchronized multisensor data acquisition of social human behavior. Our core idea involves a cost-accuracy trade-off by using Network Time Protocol (NTP) as a source reference for all sensors. While commonly used as a reference in ubiquitous computing, NTP is widely considered to be insufficiently accurate as a reference for video applications, where Precision Time Protocol (PTP) or Global Positioning System (GPS) based references are preferred. We argue and show, however, that the latency introduced by using NTP as a source reference is adequate for human behavior research, and the subsequent cost and modularity benefits are a desirable trade-off for applications in this domain. We also describe one instantiation of the approach deployed in a real-world experiment to demonstrate the practicality of our setup in-the-wild.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Pattern Recognition and Bioinformatic
Prymnesium Parvum
No full textPrymnesium parvum Carter (Prymnesiophyceae) is een kleine, vrij zwemmende algensoort. Zij kunnen echter ook sessiel worden door zich met hun haptonema te hechten. P.parvum aangetroffen in Botshol, is door R. Suykerbuyk als volgt beschreven (pers. comm, 1992): - cel: (9-13)x(8-9) ?m, peer- of hartvormig, twee chromatoforen, liggend in het brede gedeelte van de cel. - flagel: 15-22 ?m lang, aantal 2. - haptonema: kort, tot 7 ?m niet recht, meestal met een bocht, soms bijna een cirkel vormend. - schalen: (0.40-0.45)x(0.30-0.35) ?m, meestal met een duidelijk herkenbaar patroon P. parvum is euryhalien. De soort kan in brak- of zoetwater massaal voorkomen. Een dergelijke bloei kan voorkomen bij zeer lage P-gehalte of bij Cl-gehaltes die voor de soort zeer laag zijn. Tijdens een bloei kunnen toxische stoffen worden uitgescheiden. Er is echter geen duidelijke relatie aangetroffen tussen het aantal algen, de concentratie aan toxische stof en de toxiciteit van de stof. Sind het massale optreden van P.parvum vissterfte in viskwekerijen heeft veroorzaakt, is er veel onderzoek in het laboratorium verricht naar het toxine. In de verschillende kweekmedia, gebruikt voor de isolatie en het opkweken van de soort bleken organische verbindingen van belang te zijn. Verschillende kweekomstandigheden en verschillende isolatie technieken worden gebruikt. Uit de gevonden literatuur blijkt niet overtuigend of men te maken heeft met één toxine met verschillende componenten of met verschillende toxinen. De verschillende stoffen grijpen aan op verschillende celtypen. Het lijkt dat de werking op die celtypen gelijk is, namelijk het beinvloeden van de permeabiliteit van de celwand voor kationen. Bestrijding van bloeien vindt meestal plaats met chemische middelen. Wel is in Engeland in een gebied geconstateerd dat na vermindering van de externe belasting door kokmeeuwen van een watersysteem, het ecosysteem zich zodanig herstelde dat bloeien van P. parvum niet meer optraden.Water ManagementCivil Engineering and Geoscience
Investigation of microstructure and mechanical properties of phosphocalcic bone substitute using the chemical wet method
No full textBayesian-EUCLID: discovering hyperelastic material laws with uncertainties
No full textWithin the scope of our recent approach for Efficient Unsupervised
Constitutive Law Identification and Discovery (EUCLID), we propose an
unsupervised Bayesian learning framework for discovery of parsimonious and
interpretable constitutive laws with quantifiable uncertainties. As in
deterministic EUCLID, we do not resort to stress data, but only to
realistically measurable full-field displacement and global reaction force
data; as opposed to calibration of an a priori assumed model, we start with a
constitutive model ansatz based on a large catalog of candidate functional
features; we leverage domain knowledge by including features based on existing,
both physics-based and phenomenological, constitutive models. In the new
Bayesian-EUCLID approach, we use a hierarchical Bayesian model with
sparsity-promoting priors and Monte Carlo sampling to efficiently solve the
parsimonious model selection task and discover physically consistent
constitutive equations in the form of multivariate multi-modal probabilistic
distributions. We demonstrate the ability to accurately and efficiently recover
isotropic and anisotropic hyperelastic models like the Neo-Hookean, Isihara,
Gent-Thomas, Arruda-Boyce, Ogden, and Holzapfel models in both elastostatics
and elastodynamics. The discovered constitutive models are reliable under both
epistemic uncertainties - i.e. uncertainties on the true features of the
constitutive catalog - and aleatoric uncertainties - which arise from the noise
in the displacement field data, and are automatically estimated by the
hierarchical Bayesian model.Comment: 36 pages, 17 figure
