Rotational Cryptanalysis of ARX

in Fast Software Encryption 17th International Workshop, FSE 2010, Seoul, Korea (2010)

In this paper we analyze the security of systems based on modular additions, rotations, and XORs (ARX systems). We provide both theoretical support for their security and practical cryptanalysis of real ... [more ▼]

In this paper we analyze the security of systems based on modular additions, rotations, and XORs (ARX systems). We provide both theoretical support for their security and practical cryptanalysis of real ARX primitives. We use a technique called rotational cryptanalysis , that is universal for the ARX systems and is quite efficient. We illustrate the method with the best known attack on reduced versions of the block cipher Threefish (the core of Skein). Additionally, we prove that ARX with constants are functionally complete, i.e. any function can be real- ized with these operations. [less ▲]

Rotational diffusion of magnetic nickel nanorods in colloidal dispersions

in Journal of Physics : Condensed Matter (2011), 23

Colloidal dispersions of Ni nanorods were synthesized by pulsed electrodeposition of Ni into nanoporous aluminum oxide layers followed by dissolution of the templates. Geometrical characterization of the ... [more ▼]

Colloidal dispersions of Ni nanorods were synthesized by pulsed electrodeposition of Ni into nanoporous aluminum oxide layers followed by dissolution of the templates. Geometrical characterization of the nanorods by transmission electron microscopy and scanning electron microscopy allowed us to determine the average length (100–250 nm) and diameter (20–40 nm) of the rods and to estimate the thickness of the polyvinylpyrrolidone surfactant layer. Due to their acicular shape, nanorods of the given size are uniaxial ferromagnetic single domain particles and exhibit a distinct anisotropic polarizability. These two characteristic properties are the physical basis for magnetic field-dependent optical transmission and allow us to investigate the rotational diffusion of the nanorods in liquid dispersion. In the present study, we employed AC magnetization measurements, dynamical light scattering and optical transmission measurements in a rotating magnetic field to determine the rotational diffusion coefficient. The results from all three methods were consistent and agree with theory within a factor of 2. [less ▲]

La Roumanie, une synthèse des diversités

Article for general public (2019)

Lors de la onzième présidence luxembourgeoise du Conseil de l’UE, l’Europe accueille deux nouveaux membres – la Roumanie et la Bulgarie – qui signent le Traité d’adhésion le 25 avril 2005, à l’Abbaye de ... [more ▼]

Lors de la onzième présidence luxembourgeoise du Conseil de l’UE, l’Europe accueille deux nouveaux membres – la Roumanie et la Bulgarie – qui signent le Traité d’adhésion le 25 avril 2005, à l’Abbaye de Neumünster. En ce début d’année, la Roumanie entame sa première présidence européenne, dont le point d’orgue est le sommet de Sibiu (Hermannstadt) du 9 mai 2019. Si son passé récent est plus connu car souvent présent dans les médias, l’histoire ancienne de la Roumanie, ses affinités multiséculaires avec le Luxembourg et leur héritage culturel commun le sont moins et méritent d’être davantage mis en exergue. [less ▲]

Round table: Jewish Studies in the Digital Age

Presentation (2021, January 14)

The international virtual conference “#DHJewish - Jewish Studies in the Digital Age” took place from 11 to 14 January 2021 and brought together more than sixty scholars and heritage practitioners to ... [more ▼]

The international virtual conference “#DHJewish - Jewish Studies in the Digital Age” took place from 11 to 14 January 2021 and brought together more than sixty scholars and heritage practitioners to discuss how the digital turn affects the field of Jewish Studies. The conference ended with a closing round table, which was introduced and moderated by Gerben Zaagsma, and featured Miriam Rürup, Sinai Rusinek, Daniel Stoekl Ben Ezra, Rachel Deblinger and Jeffrey Shandler. [less ▲]

Roundtable 'Humanities in the mirror: writing Jewish history in a digital key'

Presentation (2018, July 15)

Participation in a roundtable discussion on Jewish History and digital Humanities.

Roundtable on online virality at the 4th RESAW conference

Presentation (2021, June 17)

Roundtable on Online Virality (organised by the HIVI project. Chair: Valérie Schafer, University of Luxembourg) Speakers: Pierre-Carl Langlais (Université Paul-Valéry Montpellier III), Frédéric Clavert ... [more ▼]

Roundtable on Online Virality (organised by the HIVI project. Chair: Valérie Schafer, University of Luxembourg) Speakers: Pierre-Carl Langlais (Université Paul-Valéry Montpellier III), Frédéric Clavert (University of Luxembourg), Ditte Laursen (The Royal Danish Library), Tuğçe Oklay (University Paris 8 Vincennes – Saint-Denis), Surbhi Tandon (Guru Gobind Singh Indraprastha University), Durgesh Tripathi (GGS Indraprastha University) [less ▲]

Roundtable: Research Opportunities and Challenges for Emerging Software Systems

in Journal of Computer Science and Technology (2015), 30(5), 935-941

For this special section on software systems, several research leaders in software systems, as guest editors for this special section, discuss important issues that will shape this field’s future ... [more ▼]

For this special section on software systems, several research leaders in software systems, as guest editors for this special section, discuss important issues that will shape this field’s future directions. The essays included in this roundtable article cover research opportunities and challenges for emerging software systems such as data processing programs (Xiangyu Zhang) and online services (Dongmei Zhang), with new directions of technologies such as unifications in software testing (Yves Le Traon), data-driven and evidence-based software engineering (Qing Wang), and dynamic analysis of multiple traces (Lu Zhang). — Tao Xie, Leading Editor of Special Section on Software System. © 2015, Springer Science+Business Media New York. [less ▲]

Rousseau of constructies in de pedagogische historiografie en de reconstructie van verdrongen pedagogische tradities

in Hans van Crombrugge; Meijer, Wilna (Eds.) Pedagogik en traditie, opvoeding en religie (2004)

Rousseaus Problem von Mensch- oder Bürgerbildung und die pädagogische Implikation in Pestalozzis "Nachforschungen"

in Tröhler, Daniel (Ed.) Pestalozzis "Nachforschungen" II: kontextuelle Studien. Tagungsakten des interdisziplinären Kolloquiums am Pestalozzianum im April 1998, 6 (1999)

Route Diversity: A Future For Transmission Protocols

in Proceedings of the 2007 Fourth International Conference on Broadband Communications, Networks and Systems BROADNETS 2007 (2007)