References of "2020"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailCryptanalysis of the Legendre PRF and generalizations
Beullens, Ward; Beyne, Tim; Udovenko, Aleksei UL et al

in IACR Transactions on Symmetric Cryptology (2020), 2020(1),

The Legendre PRF relies on the conjectured pseudorandomness properties of the Legendre symbol with a hidden shift. Originally proposed as a PRG by Damgård at CRYPTO 1988, it was recently suggested as an ... [more ▼]

The Legendre PRF relies on the conjectured pseudorandomness properties of the Legendre symbol with a hidden shift. Originally proposed as a PRG by Damgård at CRYPTO 1988, it was recently suggested as an efficient PRF for multiparty computation purposes by Grassi et al. at CCS 2016. Moreover, the Legendre PRF is being considered for usage in the Ethereum 2.0 blockchain. This paper improves previous attacks on the Legendre PRF and its higher-degree variant due to Khovratovich by reducing the time complexity from O(plogp/M) to O(plog^2p/M2) Legendre symbol evaluations when M≤p√4 queries are available. The practical relevance of our improved attack is demonstrated by breaking two concrete instances of the PRF proposed by the Ethereum foundation. Furthermore, we generalize our attack in a nontrivial way to the higher-degree variant of the Legendre PRF and we point out a large class of weak keys for this construction. Lastly, we provide the first security analysis of two additional generalizations of the Legendre PRF originally proposed by Damgård in the PRG setting, namely the Jacobi PRF and the power residue PRF. [less ▲]

Detailed reference viewed: 95 (10 UL)
See detailAutomation, Growth, and Factor Shares in the Era of Population Aging
Irmen, Andreas UL

Presentation (2020)

Detailed reference viewed: 46 (4 UL)
Full Text
Peer Reviewed
See detailMythologizing War: Legacies of Conflict in Croatian Parliamentary Debates
Mochtak, Michal UL

in Journal of Southeast European and Black Sea Studies (2020), 20(3), 491-513

The paper analyses almost fifteen years of Croatian parliamentary debates and identifies a discourse of war legacies. Using the latest advancements in natural language processing, the paper utilizes ... [more ▼]

The paper analyses almost fifteen years of Croatian parliamentary debates and identifies a discourse of war legacies. Using the latest advancements in natural language processing, the paper utilizes models based on latent semantic analysis and discusses how politicians talk about war in terms of common narratives and shared frameworks. Using a complex vector representation of war-related concepts, the paper specifically focuses on their framing in the context of right-wing authoritarianism. The results show a negative trend of pushing the most frequent war-related concepts to more extreme framing as a potential reflection of their political abuse and ongoing mythologization. [less ▲]

Detailed reference viewed: 81 (4 UL)
Full Text
Peer Reviewed
See detailFilm and Video Analysis in the Digital Humanities – An Interdisciplinary Dialog
Burghardt, Manuel; Heftberger, Adelheid; Pause, Johannes UL et al

in Digital Humanities Quarterly (2020), 14(4),

This editorial introduces the special issue on “Digital Humanities & Film Studies: Analyzing the Modalities of Moving Images,” which contains a total of eight exciting contributions. Moreover, this ... [more ▼]

This editorial introduces the special issue on “Digital Humanities & Film Studies: Analyzing the Modalities of Moving Images,” which contains a total of eight exciting contributions. Moreover, this editorial aims to highlight the complementary disciplinary perspectives on the computer-aided analysis of moving images, which are important prerequisites to better understand and situate a common DH perspective [less ▲]

Detailed reference viewed: 304 (3 UL)
Full Text
Peer Reviewed
See detailShort Paper: An Update on Marked Mix-Nets: An Attack, a Fix and PQ Possibilities
Haines, Thomas; Pereira, Olivier; Roenne, Peter UL

in Financial Cryptography and Data Security - FC 2020 International Workshops, AsiaUSEC, CoDeFi, VOTING, and WTSC, Kota Kinabalu, Malaysia February 14, 2020, Revised Selected Papers (2020)

Detailed reference viewed: 166 (2 UL)
Full Text
Peer Reviewed
See detailGendered and diversified? Leadership in global hospitality and tourism academia
Gewinner, Irina UL

in International Journal of Contemporary Hospitality Management (2020)

Detailed reference viewed: 122 (1 UL)
Full Text
Peer Reviewed
See detailGender norms, sexuality and post-socialist identity: Does migration matter?
Gewinner, Irina UL

in Sexuality and Culture (2020)

Detailed reference viewed: 101 (0 UL)
Full Text
Peer Reviewed
See detailElectron Energy Loss Spectroscopy of Bright and Dark Modes in Hyperbolic Metamaterial Nanostructures
Isoniemi, Tommi; Maccaferri, Nicolò UL; Ramasse, Quentin M. et al

in Advanced Optical Materials (2020), 8(13), 2000277

Layered metal/dielectric hyperbolic metamaterials (HMMs) support a wide landscape of plasmon polariton excitations. In addition to surface plasmon polaritons, coupled Bloch-like gap-plasmon polaritons ... [more ▼]

Layered metal/dielectric hyperbolic metamaterials (HMMs) support a wide landscape of plasmon polariton excitations. In addition to surface plasmon polaritons, coupled Bloch-like gap-plasmon polaritons with high modal confinement inside the multilayer are supported. Photons can excite only a subset of these polaritonic modes, typically with a limited energy and momentum range in respect to the wide set of high-K modes supported by hyperbolic dispersion media, and coupling with gratings or local excitation is necessary. Strikingly, electron energy loss spectroscopy (EELS) in a scanning transmission electron microscope allows nm-scale local excitation and mapping of the spatial field distribution of all the modes supported by a photonic or plasmonic structure, both bright and dark, and also all other inelastic interactions of the beam, including phonons and interband transitions. Herein, experimental evidence of the spatial distribution of plasmon polaritons in multilayered type II HMM nanostructures is acquired with an aloof electron beam adjacent to structures of current interest. HMM pillars are useful for their separation and adjustability of optical scattering and absorption, while HMM slot cavities can be used as waveguides with high field confinement. The nature of the modes is confirmed with corresponding simulations of EEL and optical spectra and near-field intensities. [less ▲]

Detailed reference viewed: 176 (12 UL)
Full Text
Peer Reviewed
See detailGeometric simplicial embeddings of arc-type graphs
Parlier, Hugo UL; Weber, Ashley

in J. Korean Math. Soc. (2020), 57(5), 1103--1118

Detailed reference viewed: 91 (0 UL)
Full Text
Peer Reviewed
See detailA Verifiable and Practical Lattice-Based Decryption Mix Net with External Auditing
Boyen, Xavier; Haines, Thomas; Mueller, Johannes UL

in Computer Security - ESORICS 2020 - 25th European Symposium on Research in Computer Security, ESORICS 2020, Guildford, UK, September 14-18, 2020, Proceedings, Part II (2020)

Detailed reference viewed: 74 (6 UL)
Full Text
Peer Reviewed
See detailVolumes of quasifuchsian manifolds
Schlenker, Jean-Marc UL

in Surveys in Differential Geometry (2020), 25(1), 319-353

Quasifuchsian hyperbolic manifolds, or more generally convex co-compact hyperbolic manifolds, have infinite volume, but they have a well-defined ``renormalized'' volume. We outline some relations between ... [more ▼]

Quasifuchsian hyperbolic manifolds, or more generally convex co-compact hyperbolic manifolds, have infinite volume, but they have a well-defined ``renormalized'' volume. We outline some relations between this renormalized volume and the volume, or more precisely the ``dual volume'', of the convex core. On one hand, there are striking similarities between them, for instance in their variational formulas. On the other, object related to them tend to be within bounded distance. Those analogies and proximities lead to several questions. Both the renormalized volume and the dual volume can be used for instance to bound the volume of the convex core in terms of the Weil-Petersson distance between the conformal metrics at infinity. [less ▲]

Detailed reference viewed: 110 (15 UL)
Full Text
Peer Reviewed
See detailExamining the Relation Among Subjective Age and Working Memory in Old Age on a High-Frequency Basis Across 7 Days
Lücke, Anna; Siebert, Jelena; Schilling, Oliver et al

in Innovation in Aging (2020), 4(Supplement_1), 598-598

While increasing longitudinal evidence suggests that negative age views accelerate cognitive decline and increase dementia risk, we know little about such co-variance dynamics on a daily basis. We make ... [more ▼]

While increasing longitudinal evidence suggests that negative age views accelerate cognitive decline and increase dementia risk, we know little about such co-variance dynamics on a daily basis. We make use of subjective age and working memory performance data obtained six times a day over seven consecutive days as people went about their daily routines from 123 young-old (aged 66-69 years, 47.2% women) and 42 old-old (aged 86-90 years, 55.8% women) adults. Notably, multilevel models revealed considerably-sized short-term intra-individual variation of subjective age and working memory within days and these short-term within-day fluctuations in subjective age and working memory were coupled as expected. Hence, increased subjective age went along with lowered working memory confirming previous research. However, the respective between-day associations appeared reversed. Given this evidence of correlated short-term variability, we also discuss implications of different change dynamics that might explain moment-to-moment versus day-to-day associations between subjective age and working memory. [less ▲]

Detailed reference viewed: 75 (0 UL)
Full Text
Peer Reviewed
See detailLink Adaptation and SINR errors in Practical Multicast Multibeam Satellite Systems with Linear Precoding
Tato, Anxo; Andrenacci, Stefano; Lagunas, Eva UL et al

in International Journal of Satellite Communications and Networking (2020)

Detailed reference viewed: 26 (1 UL)
Full Text
Peer Reviewed
See detailEvolution of Conformation, Nanomechanics, and Infrared Nanospectroscopy of Single Amyloid Fibrils Converting into Microcrystals
Adamcik, Jozef; Ruggeri, Francesco Simone; Berryman, Josh UL et al

in Advanced Science (2020)

Abstract Nanomechanical properties of amyloid fibrils and nanocrystals depend on their secondary and quaternary structure, and the geometry of intermolecular hydrogen bonds. Advanced imaging methods based ... [more ▼]

Abstract Nanomechanical properties of amyloid fibrils and nanocrystals depend on their secondary and quaternary structure, and the geometry of intermolecular hydrogen bonds. Advanced imaging methods based on atomic force microscopy (AFM) have unravelled the morphological and mechanical heterogeneity of amyloids, however a full understanding has been hampered by the limited resolution of conventional spectroscopic methods. Here, it is shown that single molecule nanomechanical mapping and infrared nanospectroscopy (AFM-IR) in combination with atomistic modelling enable unravelling at the single aggregate scale of the morphological, nanomechanical, chemical, and structural transition from amyloid fibrils to amyloid microcrystals in the hexapeptides, ILQINS, IFQINS, and TFQINS. Different morphologies have different Young's moduli, within 2?6 GPa, with amyloid fibrils exhibiting lower Young's moduli compared to amyloid microcrystals. The origins of this stiffening are unravelled and related to the increased content of intermolecular ?-sheet and the increased lengthscale of cooperativity following the transition from twisted fibril to flat nanocrystal. Increased stiffness in Young's moduli is correlated with increased density of intermolecular hydrogen bonding and parallel beta-sheet structure, which energetically stabilize crystals over the other polymorphs. These results offer additional evidence for the position of amyloid crystals in the minimum of the protein folding and aggregation landscape. [less ▲]

Detailed reference viewed: 56 (0 UL)
Full Text
See detailIdentifiability of Finite Mixture Models with underlying Normal Distribution
Noel, Cédric; Schiltz, Jang UL

E-print/Working paper (2020)

In this paper, we show under which conditions generalized finite mixture with underlying normal distribution are identifiable in the sense that a given dataset leads to a uniquely determined set of model ... [more ▼]

In this paper, we show under which conditions generalized finite mixture with underlying normal distribution are identifiable in the sense that a given dataset leads to a uniquely determined set of model parameter estimations up to a permuta-tion of the clusters. [less ▲]

Detailed reference viewed: 43 (0 UL)
Full Text
Peer Reviewed
See detailHow working memory capacity and shifting matter for learning. A replication study using worked examples
Bichler, S; Schwaighofer, M; Stadler, M et al

in Journal of Educational Psychology (2020), 112

Detailed reference viewed: 88 (0 UL)
Full Text
Peer Reviewed
See detailExogenous covert shift of attention without the ability to plan eye movements.
Masson, Nicolas UL; Andres, Michael; Pereira, Sarah Carneiro et al

in Current Biology (2020), 30(18), 1032-1033

The automatic allocation of attention to a salient stimulus in the visual periphery (e.g., a traffic light turning red) while maintaining fixation elsewhere (e.g., on the car ahead) is referred to as ... [more ▼]

The automatic allocation of attention to a salient stimulus in the visual periphery (e.g., a traffic light turning red) while maintaining fixation elsewhere (e.g., on the car ahead) is referred to as exogenous covert shift of attention (ECSA). An influential explanation is that ECSA results from the programming of a saccadic eye movement toward the stimulus of interest [1,2], although the actual movement may be withheld if needed. In this paper, however, we report evidence of ECSA in the paralyzed axis of three individuals with either horizontal or vertical congenital gaze paralysis, including for stimuli appearing at locations that cannot be foveated through head movements. This demonstrates that ECSA does not require programming either eye or head movements and calls for a re-examination of the oculomotor account. [less ▲]

Detailed reference viewed: 97 (4 UL)
Full Text
Peer Reviewed
See detailThe Multidimensional Forced-Choice Format as an alternative for rating scales. Current state of research
Wetzel, E; Frick, S; Greiff, Samuel UL

in European Journal of Psychological Assessment (2020), 36

Detailed reference viewed: 40 (0 UL)
Full Text
See detailGenerating codebooks to ensure the independent use of research data. Some guidelines
Horstmann, K T; Arslan, R; Greiff, Samuel UL

in European Journal of Psychological Assessment (2020), 36

Detailed reference viewed: 37 (1 UL)