cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Fractional Power-Law Spectral Response of CaCu3Ti4O12 Dielectric: Many-Body Effects
Creators: name: Kumar, Jitender
name: Awasthi, A. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Spectral character of dielectric response in CaCu3Ti4O12 across 0.5Hz-4MHz over 45-200K corresponding to neither the Debyean nor the KWW relaxation patterns rather indicates a random-walk like diffusive dynamics of moments. Non-linear relaxation here is due to the many body dipole-interactions, as confirmed by spectral-fits of our measured permittivity to the Dissado-Hill behaviour. Fractional power-laws observed in ε*(ω) macroscopically reflect the fractal microscopic configurations. Below ~100K, the power-law exponent m (n) steeply decreases (increases), indicating finite length-scale collective response of moment-bearing entities. At higher temperatures, m gradually approaches 1 and n falls to low values, reflecting tendency towards the single-particle/Debyean relaxation.
description: 10 pages, 3 figures, 22 references
On cycle packings and feedback vertex sets
Creators: name: Chappell, Glenn G.
name: Gimbel, John
name: Hartman, Chris
Publisher: name: Faculty of Science, University of Calgary
Year: 2014

description: For a graph $G$, let $\mathbf{fvs}$ and $\mathbf{cp}$ denote the minimum size of a feedback vertex set in $G$ and the maximum size of a cycle packing in $G$, respectively. Kloks, Lee, and Liu conjectured that $\mathbf{fvs}(G)\le 2\,\mathbf{cp}(G)$ if $G$ is planar. They proved a weaker inequality, replacing $2$ by $5$. We improve this, replacing $5$ by $3$, and verifying the resulting inequality for graphs embedded in surfaces of nonnegative Euler characteristic. We also generalize to arbitrary surfaces. We show that, if a graph $G$ embeds in a surface of Euler characteristic $c\le 0$, then $\mathbf{fvs}(G)\le 3\,\mathbf{cp}(G) + 103(-c)$. Lastly, we consider what the best possible bound on $\mathbf{fvs}$ might be, and give some open problems.
description: Contributions to Discrete Mathematics, Vol 9, No 2 (2014)
Sustainable concretes for insulated concrete form (ICF) construction
Creators: name: Moore, Lindsay
Publisher: name: University of Calgary
Year: 2006

description: Bibliography: p. 161-165
description: In response to the need for improved residential concrete practice and the existing societal goal of creating sustainable building materials, high volume fly ash mixes for residential construction were developed. Other existing technologies including self-compacting concrete and insulated concrete forms were used to improve the economics associated with residential concrete construction without compromising the performance and sustainability goals. Two primary mixes, EcoA and EcoS, were designed for wall and slab application with 70% and 60% of the cementitious binder composed of fly ash respectively. These mixes were tested in the laboratory for a number of performance criteria such as consistency, set time and compressive strength. Once satisfactory lab results were attained, field trials of both mixes were carried out to validate their real world application. These preliminary t rials have provided promising results and have indicated some areas for further research and development.
Excitation of the Slichter mode by collision with a meteoroid or pressure variations at the surface and core boundaries
Creators: name: Rosat, S.
name: Rogister, Y.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: We use a normal-mode formalism to compute the response of a spherical, self-gravitating anelastic PREM-like Earth model to various excitation sources at the Slichter mode period. The formalism makes use of the theory of the Earth's free oscillations based upon an eigenfunction expansion methodology. We determine the complete response in the form of Green's function obtained from a generalization of Betti's reciprocity theorem. Surficial (surface load, fluid core pressure), internal (earthquakes, explosions) and external (object impact) sources of excitation are investigated to show that the translational motion of the inner-core would be best excited by a pressure acting at the core boundaries at time-scales shorter than the Slichter eigenperiods.
Chromatic polynomials of some sunflower mixed hypergraphs
Creators: name: Allagan, Julian D
Publisher: name: Faculty of Science, University of Calgary
Year: 2014
Subjects: Mathematics; Math; Discrete

description: The theory of mixed hypergraphs coloring has been first introduced by Voloshin in 1993 and it has been growing ever since. The proper coloring of a mixed hypergraph H = (X; C;D) is the coloring of the vertex set X so that no D-hyperedge is monochromatic and no C-hyperedge is polychromatic. A mixed hypergraph with hyperedges of type D, C or B is commonly known as a D-, C-, or B-hypergraph respectively, where B = C = D. D-hypergraph colorings are the classic hypergraph colorings which have been widely studied. The chromatic polynomial P(H;λ) of a mixed hypergraph H is the function that counts the number of proper λ-colorings, which are mappings. Recently, Walter published [15] some results concerning the chromatic polynomial of some non-uniform D-sunflower. In this paper, we present an alternative proof of his result and extend his formula to those of non-uniform C-sunflowers and B-sunflowers. Some results of a new but related member of sunflowers are also presented.
description: Contributions to Discrete Mathematics, Vol 9, No 2 (2014)
MOESM2 of Influence of UGT1A1 polymorphisms on the outcome of acute myeloid leukemia patients treated with cytarabine-base regimens
Creators: name: Chen, Peng
name: Zhu, Ke-Wei
name: Zhang, Dao-Yu
name: Yan, Han
name: Liu, Han
name: Liu, Yan-Ling
name: Cao, Shan
name: Zhou, Gan
name: Zeng, Hui
name: Chen, Shu-Ping
name: Zhao, Xie-Lan
name: Yang, Jing
name: Chen, Xiao-Ping
Publisher: name: figshare
Year: 2018
Subjects: subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Hematology

description: Additional file 2: Table S2. Clinical features of AML patients according to UGT1A1 genotypes (additional).
PLATYPUS: Software-based Power Side-Channel Attacks on x86
Creators: name: Lipp, Moritz
name: Kogler, Andreas
name: Oswald, David
name: Schwarz, Michael
name: Easdon, Catherine
name: Canella, Claudio
name: Gruss, Daniel
Publisher: name: CISPA
Year: 2023

description: Power side-channel attacks exploit variations in power consumption to extract secrets from a device, e.g., cryptographic keys. Prior attacks typically required physical access to the target device and specialized equipment such as probes and a high-resolution oscilloscope. In this paper, we present PLATYPUS attacks, which are novel software-based power side-channel attacks on Intel server, desktop, and laptop CPUs. We exploit unprivileged access to the Intel Running Average Power Limit (RAPL) interface that exposes values directly correlated with power consumption, forming a low-resolution side channel. We show that with sufficient statistical evaluation, we can observe variations in power consumption, which distinguish different instructions and different Hamming weights of operands and memory loads. This enables us to not only monitor the control flow of applications but also to infer data and extract cryptographic keys. We demonstrate how an unprivileged attacker can leak AES-NI keys from Intel SGX and the Linux kernel, break kernel address-space layout randomization (KASLR), infer secret instruction streams, and establish a timing-independent covert channel. We also present a privileged attack on mbedTLS, utilizing precise execution control to recover RSA keys from an SGX enclave. We discuss countermeasures and show that mitigating these attacks in a privileged context is not trivial.
Tensor form factors of nucleon in QCD
Creators: name: Erkol, Guray
name: Ozpineci, Altug
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We extract the isovector tensor nucleon form factors, which play an important role in understanding the transverse spin structure of the nucleon when related to the quark helicity-flip generalized parton distributions via their first moments. We employ the light-cone QCD sum rules to leading order in QCD and include distribution amplitudes up to twist 6 in order to calculate the three tensor form factors $H_T$, $E_T$ and $\tilde{H}_T$. Our results agree well with those from other approaches in the low and high momentum-transfer regions.
description: 8 pages, 1 figure; minor changes, matches journal version
Link Failure Detection in Multi-hop Control Networks
Creators: name: D'Innocenzo, Alessandro
name: Di Benedetto, Maria Domenica
name: Serra, Emmanuele
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optimization and Control (math.OC)
subject: Networking and Internet Architecture (cs.NI)
subject: Systems and Control (eess.SY)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: A Multi-hop Control Network (MCN) consists of a plant where the communication between sensors, actuators and computational unit is supported by a wireless multi-hop communication network, and data flow is performed using scheduling and routing of sensing and actuation data. We characterize the problem of detecting the failure of links of the radio connectivity graph and provide necessary and sufficient conditions on the plant dynamics and on the communication protocol. We also provide a methodology to \emph{explicitly} design the network topology, scheduling and routing of a communication protocol in order to satisfy the above conditions.
Isolating the Λ(1405) in Lattice QCD
Creators: name: Menadue, Benjamin J.
name: Kamleh, Waseem
name: Leinweber, Derek B.
name: Mahbub, M. Selim
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The negative-parity ground state of the Λ baryon lies surprisingly low in mass. At 1405.1 MeV, it lies lower than the negative-parity ground state nucleon, even though it has a valence strange quark. Using the PACS-CS (2+1)-flavour full-QCD ensembles available through the ILDG, we employ a variational analysis using source and sink smearing to isolate this elusive state. We find three low-lying odd-parity states, and for the first time reproduce the correct level ordering with respect to the nearby scattering thresholds.
description: 4 pages, 7 figures
Arthropod abundance modulates bird community responses to urbanization
Creators: name: Planillo, Aimara
name: Kramer‐Schadt, Stephanie
name: Buchholz, Sascha
name: Gras, Pierre
name: Von Der Lippe, Moritz
name: Radchuk, Viktoriia
Publisher: name: Technische Universität Berlin
Year: 2020
Subjects: subject: 570 Biowissenschaften; Biologie
subject: arthropod abundance
subject: community composition
subject: joint species distribution models
subject: species interactions
subject: urban ecology
subject: urbanization gradient
subject: wildlife diversity

description: Aim We analysed the role of species interactions in wildlife community responses to urbanization. Specifically, we investigated non‐trophic associations within a bird community and the role of trophic interactions in the responses of bird species to the urbanization gradient. Location City‐state of Berlin, Central Europe. Methods Arthropod and bird abundances were sampled across the study area and analysed using hierarchical joint species distribution models (JSDMs). Urbanization gradient was defined by environmental predictors reflecting anthropogenic disturbances, for example noise level and human population density, as well as nature‐like features, for example tree cover and open green area. Relevant environmental predictors for each group and relevant spatial resolution were selected a priori using AICc. Arthropod abundances were modelled for the bird sampling transects and included as additional predictor variable in the bird community model. In this model, we used abundances and traits of 66 breeding bird species as response variables. Results Bird species responses to urbanization were captured by the interaction between invertebrate abundance and environmental predictors. We identified three groups of birds: the urban group (12 species) showed no decrease in abundance along the urbanization gradient and were not related to arthropods abundance; the woodland group (18 species) were positively related to tree cover and arthropod abundance, also in areas with high anthropogenic disturbance; and the nature group (36 species) were positively related to arthropod abundance, but the species abundance decreased sharply with increasing anthropogenic disturbance. All the non‐trophic associations found within the bird community were positive. Main conclusions Arthropod abundance clearly modulated birds’ responses to the urbanization gradient for most species. Especially at moderate levels of anthropogenic disturbance, the abundance of arthropods is key for the occurrence and abundance of bird species in urban areas. To maintain bird diversity in urban green areas, management measures should focus on maintaining and increasing invertebrate abundance.
Automatic initialization for broadcast sports videos rectification
Creators: name: Mohammadi Tari, Shervin
Publisher: name: University of British Columbia
Year: 2012

description: Broadcast sport videos can be captured by a static or a moving camera. Unfortunately, the problem with a moving camera is that planar projective transformations (i.e., the homographies) have to be computed for each image frame in a video sequence in order to compensate for camera motions and viewpoint changes. Recently, a variety of methods have been proposed to estimate the homography between two images based on various correspondences (e.g., points, lines, ellipses matchings, and their combinations). Since the frame to frame homography estimation is an iterative process, it needs an initial estimate. Moreover, the initial estimate has to be accurate enough to guarantee that the method is going to converge to an optimal estimate. Although the initialization can be done manually for a couple of frames, manual initialization is not feasible where we are dealing with thousands of images within an entire sports game. Thus, automatic initialization is an important part of the automatic homography estimation process. In this dissertation we aim to address the problem of automatic initialization for homography estimation. More precisely, this thesis comprises four key modules, namely preprocessing, keyframe selection, keyframe matching, and frame-to-frame homography estimation, that work together in order to automatically initialize any homography estimation method that can be used for broadcast sports videos. The first part removes blurry images and roughly estimates the game-field area within remaining salient images and represents them as a set of binary masks. Then, those resulting binary masks are fed into the keyframe selection module in order to select a set of representative frames by using a robust dimensionality reduction method together with a clustering algorithm. The third module finds the closest keyframe to each input frame by taking advantage of three classifiers together with an artificial neural network to combine their results and improve the overall accuracy of the matching process. The last module takes the input frames, their corresponding closest keyframes, and computes the model-to-frame homography for all input frames. Finally, we evaluate the accuracy and robustness of our proposed method on one hockey and two basketball datasets.
Digital Libraries for Open Science: Using a Socio-Technical Interaction Network Approach
Creators: name: Beamer, Jennifer E
Publisher: name: Zenodo
Year: 2019
Subjects: Digital Libraries, Open Science, Socio-Technical Interaction Networks

description: Presentation on Open Science and Open Access Panel on Short Paper This paper argues that using Socio-Technical Interaction Networks to build on extensively-used Digital Library infrastructures for supporting Open Science knowledge environments. Using a more social -technical approach could lead to an evolutionary reconceptualization of Digital Libraries. Digital Libraries being used as knowledge environments, built upon on the document repositories, will also emphasize the importance of user interaction and collaboration in carrying out those activities. That is to say, the primary goal of Digital Libraries is to help users convert information into knowledge; therefore, Digital Libraries examined in light of socio-technical interaction networks have the potential to shift Digital Libraries from individual, isolated collections to more interoperable, interconnected knowledge-creating repositories that support an evolving relationship between open science users and the Digital Library environment.
Quantized Network Coding for Sparse Messages
Creators: name: Nabaee, Mahdy
name: Labeau, Fabrice
Publisher: name: arXiv
Year: 2012
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this paper, we study the data gathering problem in the context of power grids by using a network of sensors, where the sensed data have inter-node redundancy. Specifically, we propose a new transmission method, calledquantized network coding, which performs linear net-work coding in the field of real numbers, and quantization to accommodate the finite capacity of edges. By using the concepts in compressed sensing literature, we propose to use l1-minimization to decode the quantized network coded packets, especially when the number of received packets at the decoder is less than the size of sensed data (i.e. number of nodes). We also propose an appropriate design for network coding coefficients, based on restricted isometry property, which results in robust l1-min decoding. Our numerical analysis show that the proposed quantized network coding scheme with l1-min decoding can achieve significant improvements, in terms of compression ratio and delivery delay, compared to conventional packet forwarding.
Speculative Dereferencing of Registers: Reviving Foreshadow
Creators: name: Schwarzl, Martin
name: Schuster, Thomas
name: Schwarz, Michael
name: Gruss, Daniel
Publisher: name: CISPA
Year: 2023

description: In this paper, we provide a systematic analysis of the root cause of the prefetching effect observed in previous works and show that its attribution to a prefetching mechanism is incorrect in all previous works, leading to incorrect conclusions and incomplete defenses. We show that the root cause is speculative dereferencing of user-space registers in the kernel. This new insight enables the first end-to-end Foreshadow (L1TF) exploit targeting non-L1 data, despite Foreshadow mitigations enabled, a novel technique to directly leak register values, and several side-channel attacks. While the L1TF effect is mitigated on the most recent Intel CPUs, all other attacks we present still work on all Intel CPUs and on CPUs by other vendors previously believed to be unaffected.
Evolution of Landau Levels into Edge States at an Atomically Sharp Edge in Graphene
Creators: name: Li, Guohong
name: Luican, Adina
name: Abanin, Dmitry
name: Levitov, Leonid
name: Andrei, Eva Y.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The quantum-Hall-effect (QHE) occurs in topologically-ordered states of two-dimensional (2d) electron-systems in which an insulating bulk-state coexists with protected 1d conducting edge-states. Owing to a unique topologically imposed edge-bulk correspondence these edge-states are endowed with universal properties such as fractionally-charged quasiparticles and interference-patterns, which make them indispensable components for QH-based quantum-computation and other applications. The precise edge-bulk correspondence, conjectured theoretically in the limit of sharp edges, is difficult to realize in conventional semiconductor-based electron systems where soft boundaries lead to edge-state reconstruction. Using scanning-tunneling microscopy and spectroscopy to follow the spatial evolution of bulk Landau-levels towards a zigzag edge of graphene supported above a graphite substrate we demonstrate that in this system it is possible to realize atomically sharp edges with no edge-state reconstruction. Our results single out graphene as a system where the edge-state structure can be controlled and the universal properties directly probed.
description: 16 pages, 4 figures
CaIrO3 post-perovskite, a j = 1/2 quasi-one-dimensional antiferromagnet
Creators: name: Bogdanov, Nikolay A.
name: Katukuri, Vamshi M.
name: Stoll, Hermann
name: Brink, Jeroen van den
name: Hozoi, Liviu
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The 5d5 iridate CaIrO3 is isostructural with the post-perovskite phase of MgSiO3, recently shown to occur under extreme pressure in the lower Earth's mantle. It therefore serves as an analogue of post-perovskite MgSiO3 for a wide variety of measurements at ambient conditions or achievable with conventional multianvile pressure modules. By multireference configuration-interaction calculations we here provide essential information on the chemical bonding and magnetic interactions in CaIrO3. We predict a large antiferromagnetic superexchange of 120 meV along the c axis, the same size with the interactions in the cuprate superconductors, and ferromagnetic couplings smaller by an order of magnitude along a. CaIrO3 can thus be regarded as a j = 1/2 quasi-one-dimensional antiferromagnet. While this qualitatively agrees with the stripy magnetic structure proposed by resonant x-ray diffraction, the detailed microscopic picture emerging from our study, in particular, the highly uneven admixture of t2g components, provides a clear prediction for resonant inelastic x-ray scattering experiments.
Rapidity and Pseudorapidity distributions of the Various Hadron-Species Produced in High Energy Nuclear Collisions : A Systematic Approach
Creators: name: Sau, Goutam
name: Bhattacharya, A.
name: Bhattacharyya, S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: With the help of a phenomenological approach outlined in the text in some detail, we have dealt here with the description of the plots on rapidity and pseudorapidity spectra of some hadron-secondaries produced in various nucleus-nucleus interactions at high energies. The agreement between the measured data and the attempted fits are, on the whole, modestly satisfactory excepting a very narrow central region in the vicinity of y=$η$=0. At last, hints to how the steps suggested in the main body of the text to proceed with the description of the measured data given in the plots could lead finally to a somewhat systematic methodology have also been made.
description: 21 pages, 13 figures. arXiv admin note: substantial text overlap with arXiv:1011.2095
Relation Between First Arrival Time and Permeability in Self-Affine Fractures with Areas in Contact
Creators: name: Talon, Laurent
name: Auradou, Harold
name: Hansen, Alex
Publisher: name: arXiv
Year: 2012
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We demonstrate that the first arrival time in dispersive processes in self-affine fractures are governed by the same length scale characterizing the fractures as that which controls their permeability. In one-dimensional channel flow this length scale is the aperture of the bottle neck, i.e., the region having the smallest aperture. In two dimensions, the concept of a bottle neck is generalized to that of a minimal path normal to the flow. The length scale is then the average aperture along this path. There is a linear relationship between the first arrival time and this length scale, even when there is strong overlap between the fracture surfaces creating areas with zero permeability. We express the first arrival time directly in terms of the permeability.
description: EPL (2012) 1
Specfuscator: Evaluating Branch Removal as a Spectre Mitigation
Creators: name: Schwarzl, Martin
name: Canella, Claudio
name: Gruss, Daniel
name: Schwarz, Michael
Publisher: name: CISPA
Year: 2023

description: Attacks exploiting speculative execution, known as Spectre attacks, have gained substantial attention in the scientific community and in industry with a broad range of defense techniques proposed. In particular, in-software defenses for commodity systems attempt to leave the program structure as is, but defuse every potential Spectre gadget by, e.g., stopping the speculation, or limiting value ranges. While these mitigations disrupt the program flow on every conditional branch, they still contain every single conditional branch instruction. In this paper, we show that one dimension of Spectre mitigations has been overlooked entirely. We explore a novel principled Spectre mitigation that sits at the other end of the scale: the absence of conditional and indirect branches. Our mitigation is based on automatically linearizing the program flow through a special compiler pass, eliminating all conditional and indirect branches. We show that our Spectre mitigation has very clear security guarantees. We explore the feasibility of this unorthodox approach and evaluate its performance in comparison to the more conservative approaches presented so far. We observe that the performance overhead can be low, e.g., 5 %, for certain use cases, being on-par with state-of-the-art mitigations, but very high for other use cases, e.g., and overhead factor of 1000. Our results demonstrate the feasibility of Spectre defenses that eliminate branches and indicate good performance-security trade-offs for Spectre defenses can be achieved by sticking to neither of the extremes.
Curriculum for EATRIS-Plus Summer School in Personalised Medicine
Creators: name: Mlinaric-Rascan, Irena
name: Faria, Claudia
name: Baiao, Helena
name: Keidong, Eliis
Publisher: name: Zenodo
Year: 2021
Subjects: Personalised Medicine
Personalized Medicine
Translational Medicine
Summer School
Multiomics

description: EATRIS-Plus is a flagship project aiming to consolidate our infrastructure’s capacities in the field of personalised medicine (PM). One of our aims is to promote and expand our training opportunities and deliver new educational events and content to better serve our research community. Task 7.3 foresees the delivery of three iterations of Summer School of Translational Medicine (TM) that focus on how translational medicine can be used for Personalised Medicine applications. Due to the pandemic the planned 5-day full time F2F program had to be adapted considering the new virtual format. The curriculum addresses key topics linked to PM including omics-based strategies, biomarkers, patient stratification, electronic health records, data access and sharing, machine learning and Artificial Intelligence, quality and reproducibility, animal and non-animal models, and patient engagement.
Metal‐Specific Biomaterial Accumulation in Human Peri‐Implant Bone and Bone Marrow
Creators: name: Schoon, Janosch
name: Hesse, Bernhard
name: Rakow, Anastasia
name: Ort, Melanie J.
name: Lagrange, Adrien
name: Jacobi, Dorit
name: Winter, Annika
name: Huesker, Katrin
name: Reinke, Simon
name: Cotte, Marine
name: Tucoulou, Remi
name: Marx, Uwe
name: Perka, Carsten
name: Duda, Georg N.
name: Geissler, Sven
Publisher: name: Technische Universität Berlin
Year: 2020
Subjects: subject: 600 Technik, Technologie
subject: arthroplasty
subject: bone marrow
subject: metal exposure
subject: nanoparticles
subject: synchrotron radiation

description: Metallic implants are frequently used in medicine to support and replace degenerated tissues. Implant loosening due to particle exposure remains a major cause for revision arthroplasty. The exact role of metal debris in sterile peri‐implant inflammation is controversial, as it remains unclear whether and how metals chemically alter and potentially accumulate behind an insulating peri‐implant membrane, in the adjacent bone and bone marrow (BM). An intensively focused and bright synchrotron X‐ray beam allows for spatially resolving the multi‐elemental composition of peri‐implant tissues from patients undergoing revision surgery. In peri‐implant BM, particulate cobalt (Co) is exclusively co‐localized with chromium (Cr), non‐particulate Cr accumulates in the BM matrix. Particles consisting of Co and Cr contain less Co than bulk alloy, which indicates a pronounced dissolution capacity. Particulate titanium (Ti) is abundant in the BM and analyzed Ti nanoparticles predominantly consist of titanium dioxide in the anatase crystal phase. Co and Cr but not Ti integrate into peri‐implant bone trabeculae. The characteristic of Cr to accumulate in the intertrabecular matrix and trabecular bone is reproducible in a human 3D in vitro model. This study illustrates the importance of updating the view on long‐term consequences of biomaterial usage and reveals toxicokinetics within highly sensitive organs.
4-gram LM from Catalan Textual Corpus
Creators: name: O'Reilly Ibañez, Ciaran
Publisher: name: Zenodo
Year: 2021
Subjects: n-gram
kenlm
lm
language model
catalan

description: An n-gram LM built with KenLM based on Catalan Textual Corpus. Pruning of singletons of order 3.
The Small-Scale Dynamo and Non-Ideal MHD in Primordial Star Formation
Creators: name: Schober, Jennifer
name: Schleicher, Dominik
name: Federrath, Christoph
name: Glover, Simon
name: Klessen, Ralf
name: Banerjee, Robi
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Fluid Dynamics (physics.flu-dyn)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We study the amplification of magnetic fields during the formation of primordial halos. The turbulence generated by gravitational infall motions during the formation of the first stars and galaxies can amplify magnetic fields very efficiently and on short timescales up to dynamically significant values. Using the Kazantsev theory, which describes the so-called small-scale dynamo - a magnetohydrodynamical process converting kinetic energy from turbulence into magnetic energy - we can then calculate the growth rate of the small-scale magnetic field. Our calculations are based on a detailed chemical network and we include non-ideal magnetohydrodynamical effects such as ambipolar diffusion and Ohmic dissipation. We follow the evolution of the magnetic field up to larger scales until saturation occurs on the Jeans scale. Assuming a weak magnetic seed field generated by the Biermann battery process, both Burgers and Kolmogorov turbulence lead to saturation within a rather small density range. Such fields are likely to become relevant after the formation of a protostellar disk and, thus, could influence the formation of the first stars and galaxies in the Universe.
description: 10 pages, 8 figures, ApJ accepted
Representing and reasoning with large games
Creators: name: Jiang, Xin
Publisher: name: University of British Columbia
Year: 2012

description: In the last decade, there has been much research at the interface of computer science and game theory. One important class of problems at this interface is the computation of solution concepts (such as Nash equilibrium or correlated equilibrium) of a finite game. In order to take advantage of the highly-structured utility functions in games of practical interest, it is important to design compact representations of games as well as efficient algorithms for computing solution concepts on such representations. In this thesis I present several novel contributions in this direction: The design and analysis of Action-Graph Games (AGGs), a fully-expressive modeling language for representing simultaneous-move games. We propose a polynomial-time algorithm for computing expected utilities given arbitrary mixed strategy profiles, and leverage the algorithm to achieve exponential speedups of existing algorithms for computing Nash equilibria. Designing efficient algorithms for computing pure-strategy Nash equilibria in AGGs. For symmetric AGGs with bounded treewidth our algorithm runs in polynomial time. Extending the AGG framework beyond simultaneous-move games. We propose Temporal Action-Graph Games (TAGGs) for representing dynamic games and Bayesian Action-Graph Games (BAGGs) for representing Bayesian games. For certain subclasses of TAGGs and BAGGs we gave efficient algorithms for equilibria that achieve exponential speedups over existing approaches. Efficient computation of correlated equilibria. In a landmark paper, Papadimitriou and Roughgarden described a polynomial-time algorithm ("Ellipsoid Against Hope") for computing sample correlated equilibria of compactly-represented games. Recently, Stein, Parrilo and Ozdaglar showed that this algorithm can fail to find an exact correlated equilibrium. We present a variant of the Ellipsoid Against Hope algorithm that guarantees the polynomial-time identification of exact correlated equilibrium. Efficient computation of optimal correlated equilibria. We show that the polynomial-time solvability of what we call the deviation-adjusted social welfare problem is a sufficient condition for the tractability of the optimal correlated equilibrium problem.
YarIx: Scalable YARA-based Malware Intelligence
Creators: name: Brengel, Michael
name: Rossow, Christian
Publisher: name: CISPA
Year: 2023

description: YARA is the industry standard to search for patterns in malware data sets. Malware analysts heavily rely on YARA rules to identify specific threats, e.g., by scanning unknown malware samples for patterns that are characteristic for a certain malware strain. While YARA is tremendously useful to inspect individual files, its run time grows linearly with the number of input files, resulting in prohibitive performance penalties in large malware corpora. We present YarIx, a methodology to efficiently reveal files matching arbitrary YARA rules. In order to scale to large malware corpora, YarIx uses an inverted n-gram index that maps fixed-length byte sequences to lists of files in which they appear. To efficiently query such corpora, YarIx optimizes YARA searches by transforming YARA rules into index lookups to obtain a set of candidate files that potentially match the rule. Given the storage demands that arise when indexing binary files, YarIx compresses the disk footprint with variable byte delta encoding, abstracts from file offsets, and leverages a novel grouping-based compression methodology. This completeness-preserving approximation will then be scanned using YARA to get the actual set of matching files. Using 32M malware samples and 1404 YARA rules, we show that YarIx scales in both disk footprint and search performance. The index requires just 74% of the space required for storing the malware samples. Querying YarIx with a YARA rule in our test setup is five orders of magnitude faster than using standard sequential YARA scans.
Enzymatic Modification of Granular Potato Starch Using Isoamylase—Investigation of Morphological, Physicochemical, Molecular, and Techno‐Functional Properties
Creators: name: Ulbrich, Marco
name: Asiri, Saeed A.
name: Bussert, Robert
name: Flöter, Eckhard
Publisher: name: Technische Universität Berlin
Year: 2020
Subjects: subject: 660 Chemische Verfahrenstechnik
subject: hot paste viscosity
subject: modified granular starches
subject: potato starches

description: Granular potato starch is modified using the debranching enzyme isoamylase. The modification is performed in aqueous suspension (40% w/w) at 35 °C by grading the volume (100, 250, and 400 µL/50 g of starch, 200 U · mL−1) of enzyme solution added. The starch products obtained are comprehensively investigated in terms of morphological (scanning electron microscopy), structural (X‐ray diffraction), thermal (differential scanning calorimetry), techno‐functional (solubility, hot paste viscosity, gel strength), and molecular properties (size exclusion chromatography‐multi angle laser light scattering‐differential refractive index detection). The granular integrity is basically preserved after modification and a molecular degradation predominantly of the amylopectin by debranching is proved. However, a slight reduction of the weight average molar mass of the amylose fraction is found too. In addition, the intended partial molecular degradation of the starch polysaccharides, the effect of the preparation procedure including washing with ethanol and grinding impacts several starch characteristics conspicuously.
The Solar Neighborhood. XXVI. AP Col: The Closest (8.4 pc) Pre-Main-Sequence Star
Creators: name: Riedel, Adric R.
name: Murphy, Simon J.
name: Henry, Todd J.
name: Melis, Carl
name: Jao, Wei-Chun
name: Subasavage, John P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the results of a multi-technique investigation of the M4.5Ve flare star AP Col, which we discover to be the nearest pre-main-sequence star. These include astrometric data from the CTIO 0.9m, from which we derive a proper motion of 342.0+/-0.5 mas yr^-1, a trigonometric parallax of 119.21+/-0.98 mas (8.39+/-0.07 pc), and photometry and photometric variability at optical wavelengths. We also provide spectroscopic data, including radial velocity (22.4+/-0.3 km s^-1), lithium Equivalent Width (EW) (0.28+/-0.02 A), H-alpha EW (-6.0 to -35 A), {\it vsini} (11+/-1 km s^-1), and gravity indicators from the Siding Spring 2.3-m WiFeS, Lick 3-m Hamilton echelle, and Keck-I HIRES echelle spectrographs. The combined observations demonstrate that AP Col is the closer of only two known systems within 10 pc of the Sun younger than 100 Myr. Given its space motion and apparent age of 12-50 Myr, AP Col is likely a member of the recently proposed ~40 Myr old Argus/IC 2391 association.
description: 31 pages, 11 figures
Kneser-Poulsen conjecture for a small number of intersections
Creators: name: Gorbovickis, Igors
Publisher: name: Faculty of Science, University of Calgary
Year: 2014

description: The Kneser-Poulsen conjecture says that if a finite collection of balls in the Euclidean space $E^d$ is rearranged so that the distance between each pair of centers does not get smaller, then the volume of the union of these balls also does not get smaller. In this paper, we prove that if in the initial configuration the intersection of any two balls has common points with no more than $d+1$ other balls, then the conjecture holds.
description: Contributions to Discrete Mathematics, Vol 9, No 1 (2014)
MOESM3 of Influence of UGT1A1 polymorphisms on the outcome of acute myeloid leukemia patients treated with cytarabine-base regimens
Creators: name: Chen, Peng
name: Zhu, Ke-Wei
name: Zhang, Dao-Yu
name: Yan, Han
name: Liu, Han
name: Liu, Yan-Ling
name: Cao, Shan
name: Zhou, Gan
name: Zeng, Hui
name: Chen, Shu-Ping
name: Zhao, Xie-Lan
name: Yang, Jing
name: Chen, Xiao-Ping
Publisher: name: figshare
Year: 2018
Subjects: subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Hematology

description: Additional file 3: Table S3. Comparison of CR rate among UGT1A1 genotypes after the first course of induction therapy.
JAW: Studying Client-side CSRF with Hybrid Property Graphs and Declarative Traversals
Creators: name: Khodayari, Soheil
name: Pellegrino, Giancarlo
Publisher: name: CISPA
Year: 2023

description: Client-side CSRF is a new type of CSRF vulnerability where the adversary can trick the client-side JavaScript program to send a forged HTTP request to a vulnerable target site by modifying the program’s input parameters. We have little to-no knowledge of this new vulnerability, and exploratory security evaluations of JavaScript-based web applications are impeded by the scarcity of reliable and scalable testing techniques. This paper presents JAW, a framework that enables the analysis of modern web applications against client-side CSRF leveraging declarative traversals on hybrid property graphs, a canonical, hybrid model for JavaScript programs. We use JAW to evaluate the prevalence of client-side CSRF vulnerabilities among all (ie, 106) web applications from the Bitnami catalog, covering over 228M lines of JavaScript code. Our approach uncovers 12,701 forgeable client-side requests affecting 87 web applications in total. For 203 forgeable requests, we successfully created client-side CSRF exploits against seven web applications that can execute arbitrary server-side state-changing operations or enable cross-site scripting and SQL injection, that are not reachable via the classical attack vectors. Finally, we analyzed the forgeable requests and identified 25 request templates, highlighting the fields that can be manipulated and the type of manipulation.
Quest for COSMOS submillimeter galaxy counterparts using CARMA and VLA: Identifying three high-redshift starburst galaxies
Creators: name: Smolcic, V.
name: Navarrete, F.
name: Aravena, M.
name: Ilbert, O.
name: Yun, M. S.
name: Sheth, K.
name: Salvato, M.
name: McCracken, H. J.
name: Diener, C.
name: Aretxaga, I.
name: Riechers, D. A.
name: Finoguenov, A.
name: Bertoldi, F.
name: Capak, P.
name: Hughes, D.
name: Karim, A.
name: Schinnerer, E.
name: Scoville, N. Z.
name: Wilson, G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We report on interferometric observations at 1.3 mm at 2"-3" resolution using the Combined Array for Research in Millimeter-wave Astronomy (CARMA). We identify multi-wavelength counterparts of three submillimeter galaxies (SMGs; F(1mm)>5.5 mJy) in the COSMOS field, initially detected with MAMBO and AzTEC bolometers at low, ~10"-30", resolution. All three sources -- AzTEC/C1, Cosbo-3 and Cosbo-8 -- are identified to coincide with positions of 20 cm radio sources. Cosbo-3, however, is not associated with the most likely radio counterpart, closest to the MAMBO source position, but that further away from it. This illustrates the need for intermediate-resolution (~2") mm-observations to identify the correct counterparts of single-dish detected SMGs. All of our three sources become prominent only at NIR wavelengths, and their mm-to-radio flux based redshifts suggest that they lie at redshifts z>~2. As a proof of concept, we show that photometric redshifts can be well determined for SMGs, and we find photometric-redshifts of 5.6+/-1.2, 1.9+0.9(-0.5), and ~4 for AzTEC/C1, Cosbo-3, and Cosbo-8, respectively. Using these we infer that these galaxies have radio-based star formation rates of >~1000 Msol/yr, and IR luminosities of ~10^13 Lsol consistent with properties of high-redshift SMGs. In summary, our sources reflect a variety of SMG properties in terms of redshift and clustering, consistent with the framework that SMGs are progenitors of z~2 and today's passive galaxies.
description: 13 pages, 7 figures, 5 tables; accepted for publication in ApJS
Determination of the prime bound of a graph
Creators: name: Boussairi, Abderrahim
name: Ille, Pierre
Publisher: name: Faculty of Science, University of Calgary
Year: 2014

description: Given a graph $G$, a subset $M$ of $V(G)$ is a module of $G$ if for each $v\in V(G)\setminus M$, $v$ is adjacent to all the elements of $M$ or adjacent to none of them. For instance, $V(G)$, $\emptyset$ and $\{v\}$ ($v\in V(G)$) are modules of $G$ called trivial. Given a graph $G$, $\omega_M(G)$ (respectively $\alpha_M(G)$) denotes the largest integer $m$ such that there is a module $M$ of $G$ which is a clique (respectively a stable) set in $G$ with $|M|=m$. A graph $G$ is prime if $|V(G)|\geq 4$ and if all its modules are trivial. The prime bound of $G$ is the smallest integer $p(G)$ such that there is a prime graph $H$ with $V(H)\supseteq V(G)$, $H[V(G)]=G$ and $|V(H)\setminus V(G)|=p(G)$. We establish the following. For every graph $G$ such that $\max(\alpha_M(G),\omega_M(G))\geq 2$ and $\log_2(\max(\alpha_M(G),\omega_M(G)))$ is not an integer, $p(G)=\lceil\log_2(\max(\alpha_M(G),\omega_M(G)))\rceil$. Then, we prove that for every graph $G$ such that $\max(\alpha_M(G),\omega_M(G))=2^k$ where $k\geq 1$, $p(G)=k$ or $k+1$. Moreover $p(G)=k+1$ if and only if $G$ or its complement admits exactly $2^k$ isolated vertices. Lastly, we show that $p(G)=1$ for every non prime graph $G$ such that $|V(G)|\geq 4$ and $\alpha_M(G)=\omega_M(G)=1$.
description: Contributions to Discrete Mathematics, Vol 9, No 1 (2014)
Liquid Scintillator Time Projection Chamber Concept
Creators: name: McConkey, N.
name: Ramachers, Y. A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Results are presented from a small-scale experiment to investigate the use of room temperature organic liquid scintillators as the active medium for a time projection chamber (TPC). The optical properties of liquid scintillators have long been known, but their ability to transport charge has remained, until now, largely untested. The idea of using room temperature liquids as an active medium for an ionisation chamber was first presented in \cite{EnglerTMS}. Since then the range of liquid scintillators available has been greatly developed. We present successful transport of ionization charges in a selection of both, pure organic liquid solvents and liquid scintillator cocktails over 20$\,$mm using a variety of electric drift field strengths. The target of this research is to offer a cost effective alternative to liquid noble gas detectors in neutrino physics.
description: 6 pages, 5 figures, submitted to Proceedings 12th Pisa Meeting on Advanced Detectors, La Biodola, Isola d'Elba, Italy