cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ultra-High Energy Cosmic Rays and the GeV-TeV Diffuse Gamma-Ray Flux
Creators: name: Kalashev, Oleg E.
name: Semikoz, Dmitry V.
name: Sigl, Guenter
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Ultra-high energy cosmic ray protons accelerated in astrophysical objects produce secondary electromagnetic cascades during propagation in the cosmic microwave and infrared backgrounds. We show that such cascades can contribute between ~1% and ~50% of the GeV-TeV diffuse photon flux measured by the EGRET experiment. The GLAST satellite should have a good chance to discover this flux.
description: 4 pages, 5 figures
Stokes Phenomena in 3d $\mathcal{N}=2$ SQED$_2$ and $\mathbb{CP}^1$ Models
Creators: name: Jain, Dharmesh
name: Manna, Arkajyoti
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a novel approach of uncovering Stokes phenomenon exhibited by the holomorphic blocks of $\mathbb{CP}^1$ model by considering it as a specific decoupling limit of SQED$_2$ model. This approach involves using a $\mathbb{Z}_3$ symmetry that leaves the supersymmetric parameter space of SQED$_2$ model invariant to transform a pair of SQED$_2$ holomorphic blocks to get two new pairs of blocks. The original pair obtained by solving the line operator identities of the SQED$_2$ model and the two new transformed pairs turn out to be related by Stokes-like matrices. These three pairs of holomorphic blocks can be reduced to the known triplet of $\mathbb{CP}^1$ blocks in a particular decoupling limit where two of the chiral multiplets in the SQED$_2$ model are made infinitely massive. This reduction then correctly reproduces the Stokes regions and matrices of the $\mathbb{CP}^1$ blocks. Along the way, we find six pairs of SQED$_2$ holomorphic blocks in total, which lead to six Stokes-like regions covering uniquely the full parameter space of the SQED$_2$ model.
description: 28 pages, 4 figures; v2: 29 pages, discrete transformations identified as Z_3, text updated accordingly with no changes in final results, references added and typos corrected; v3: 31 pages, 6 figures (including a nontrivially colourful one), added analysis of Stokes regions for the SQED2 model itself, references updated and few more typos corrected (published version)
Update on Security Domain Membership RFP Proposal
Creators: name: Beznosov, Konstantin
name: Kaji, Tadashi
Publisher: name: Zenodo
Year: 2005
Subjects: Security Domain Membership Management
SDMM
CORBA Security
CORBA
Engineering Security Mechanisms

description: Presentation explains structural design proposed by the SDMM proposal, as it was standing on December 2000.
High-quality Animatable Eyelid Shapes from Lightweight Captures
Creators: name: Lyu, Junfeng
name: Xu, Feng
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: High-quality eyelid reconstruction and animation are challenging for the subtle details and complicated deformations. Previous works usually suffer from the trade-off between the capture costs and the quality of details. In this paper, we propose a novel method that can achieve detailed eyelid reconstruction and animation by only using an RGB video captured by a mobile phone. Our method utilizes both static and dynamic information of eyeballs (e.g., positions and rotations) to assist the eyelid reconstruction, cooperating with an automatic eyeball calibration method to get the required eyeball parameters. Furthermore, we develop a neural eyelid control module to achieve the semantic animation control of eyelids. To the best of our knowledge, we present the first method for high-quality eyelid reconstruction and animation from lightweight captures. Extensive experiments on both synthetic and real data show that our method can provide more detailed and realistic results compared with previous methods based on the same-level capture setups. The code is available at https://github.com/StoryMY/AniEyelid.
description: Accepted by SIGGRAPH Asia 2024
Ultra spin liquid in $\rm Lu_3Cu_2Sb_3O_{14}$
Creators: name: Shaginyan, V. R.
name: Msezane, A. Z.
name: Artamonov, S. A.
name: Japaridze, G. S.
name: Leevik, Y. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We analyze measurements of $C_{\rm mag}/T$, specific heat $C_{\rm mag}$ divided by temperature $T$, of the recently observed ultra spin liquid. The measurements are carried out in magnetic fields on the triangular lattice compound $\rm Lu_3Cu_2Sb_3O_{14}$. We show that the obtained heat capacity $C_{\rm mag}/T$ formed by ultra spin liquid as a function of temperature $T$ versus magnetic field $B$ behaves very similar to the electronic specific heat $C_{el}/T$ of the heavy fermion (HF) metal $\rm YbRh_2Si_2$ and that of the quantum magnet $\rm ZnCu_3(OH)_6Cl_2$. We further demonstrate that the spinon effective mass $M^*\propto C_{\rm mag}/T$ exhibits the universal scaling coinciding with that observed in HF metals and in $\rm ZnCu_3(OH)_6Cl_2$. Based on these observations we conclude that a strongly correlated spin liquid determines the thermodynamic properties of the ultra spin liquid of $\rm Lu_3Cu_2Sb_3O_{14}$.
description: 6 pages, 5 figures
Cascades and Kolmogorov's lognormal scaling in two-dimensional bacterial turbulence
Creators: name: Huang, Yongxiang
Publisher: name: arXiv
Year: 2024
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Collective movements of bacteria exhibit a remarkable pattern of turbulence-like vortices, in which the Richardson cascade plays an important role. In this work, we examine the energy and enstrophy cascades and their associated lognormal statistics using experimental velocity field data. The coherent structure observed on a large scale is due to the presence of the inverse energy cascade; while the kinetic energy is dissipated at all scales, since these active movements occur below the fluid viscosity scale. The forward enstrophy cascade occurs with injection at all scales and may be represented by other nonlinear interactions that are not captured by the existing experimental data. Furthermore, the lognormal statistics for both energy dissipation and enstrophy fields are verified in accordance with the Kolmogorov 1962 refined theory of turbulence. Their scaling exponents can be well described by the lognormal formula with intermittency parameters comparable with those of the three-dimensional hydrodynamic turbulence. The joint analysis of the multifractal measures of the energy dissipation rate and enstrophy follows an ellipse model from the lognormal statistics. Our results confirm the coexistence of the inverse energy cascade and the intermittency correction of the velocity scaling in this active fluid system. An inverse energy cascade diagram below the fluid viscosity is summarized to describe the observed two-dimensional bacterial turbulence. Our work provides an example of an active-flow model benchmark.
description: 35 pages with 10 figures
Theory of magnetic inertial dynamics in two-sublattice ferromagnets
Creators: name: Mondal, Ritwik
Publisher: name: arXiv
Year: 2021
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The magnetic inertial dynamics have been investigated for one sublattice ferromagnets. Here, we develop the magnetization dynamics in two-sublattice ferromagnets including the intra- and inter-sublattice inertial dynamics. First, we derive the magnetic susceptibility of such a ferromagnet. Next, by finding the poles of the susceptibility, we calculate the precession and nutation resonance frequencies. Our results suggest that while the resonance frequencies show decreasing behavior with the increasing intra-sublattice relaxation time, the effect of inter-sublattice inertial dynamics is contrasting.
description: 14 pages, 4 figures
HE 0557-4840 - Ultra-Metal-Poor and Carbon-Rich
Creators: name: Norris, John E.
name: Christlieb, N.
name: Korn, A. J.
name: Eriksson, K.
name: Bessell, M. S.
name: Beers, Timothy C.
name: Wisotzki, L.
name: Reimers, D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the discovery and high-resolution, high S/N, spectroscopic analysis of the ultra-metal-poor red giant HE 0557-4840, which is the third most heavy-element deficient star currently known. Its atmospheric parameters are T_eff = 4900 K, log g = 2.2, and [Fe/H]= -4.75. This brings the number of stars with [Fe/H] < -4.0 to three, and the discovery of HE 0557-4840 suggests that the metallicity distribution function of the Galactic halo does not have a "gap" between [Fe/H] = -4.0, where several stars are known, and the two most metal-poor stars, at [Fe/H] ~ -5.3. HE 0557-4840 is carbon rich - [C/Fe] = +1.6 - a property shared by all three objects with [Fe/H] < -4.0, suggesting that the well-known increase of carbon relative to iron with decreasing [Fe/H] reaches its logical conclusion - ubiquitous carbon richness - at lowest abundance. We also present abundances (nine) and limits (nine) for a further 18 elements. For species having well-measured abundances or strong upper limits, HE 0557-4840 is "normal" in comparison with the bulk of the stellar population at [Fe/H] ~ -4.0 - with the possible exception of Co. We discuss the implications of these results for chemical enrichment at the earliest times, in the context of single ("mixing and fallback") and two-component enrichment models. While neither offers a clear solution, the latter appears closer to the mark. Further data are required to determine the oxygen abundance and improve that of Co, and hence more strongly constrain the origin of this object.
description: Submitted to Astrophysical Journal. 52 pages (41 text, 11 figures)
Supplementary Material from Varying phylogenetic signal in susceptibility to four bacterial pathogens across species of Drosophilidae
Creators: name: SUN, HONGBO
name: Hanson, Mark A.
name: Walsh, Sarah K K.
name: Imrie, Ryan M.
name: Raymond, Ben
name: Longdon, Ben
Publisher: name: The Royal Society
Year: 2025
Subjects: classificationCode: 310799
subject: Microbiology not elsewhere classified

description: Hongbo Sun_tables_figures_ESM.pdf.pdf
PCQPR: Proactive Conversational Question Planning with Reflection
Creators: name: Guo, Shasha
name: Liao, Lizi
name: Zhang, Jing
name: Li, Cuiping
name: Chen, Hong
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Conversational Question Generation (CQG) enhances the interactivity of conversational question-answering systems in fields such as education, customer service, and entertainment. However, traditional CQG, focusing primarily on the immediate context, lacks the conversational foresight necessary to guide conversations toward specified conclusions. This limitation significantly restricts their ability to achieve conclusion-oriented conversational outcomes. In this work, we redefine the CQG task as Conclusion-driven Conversational Question Generation (CCQG) by focusing on proactivity, not merely reacting to the unfolding conversation but actively steering it towards a conclusion-oriented question-answer pair. To address this, we propose a novel approach, called Proactive Conversational Question Planning with self-Refining (PCQPR). Concretely, by integrating a planning algorithm inspired by Monte Carlo Tree Search (MCTS) with the analytical capabilities of large language models (LLMs), PCQPR predicts future conversation turns and continuously refines its questioning strategies. This iterative self-refining mechanism ensures the generation of contextually relevant questions strategically devised to reach a specified outcome. Our extensive evaluations demonstrate that PCQPR significantly surpasses existing CQG methods, marking a paradigm shift towards conclusion-oriented conversational question-answering systems.
description: Accepted by EMNLP 2024 Main
MARLens: Understanding Multi-agent Reinforcement Learning for Traffic Signal Control via Visual Analytics
Creators: name: Zhang, Yutian
name: Zheng, Guohong
name: Liu, Zhiyuan
name: Li, Quan
name: Zeng, Haipeng
Publisher: name: arXiv
Year: 2024
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: The issue of traffic congestion poses a significant obstacle to the development of global cities. One promising solution to tackle this problem is intelligent traffic signal control (TSC). Recently, TSC strategies leveraging reinforcement learning (RL) have garnered attention among researchers. However, the evaluation of these models has primarily relied on fixed metrics like reward and queue length. This limited evaluation approach provides only a narrow view of the model's decision-making process, impeding its practical implementation. Moreover, effective TSC necessitates coordinated actions across multiple intersections. Existing visual analysis solutions fall short when applied in multi-agent settings. In this study, we delve into the challenge of interpretability in multi-agent reinforcement learning (MARL), particularly within the context of TSC. We propose MARLens a visual analytics system tailored to understand MARL-based TSC. Our system serves as a versatile platform for both RL and TSC researchers. It empowers them to explore the model's features from various perspectives, revealing its decision-making processes and shedding light on interactions among different agents. To facilitate quick identification of critical states, we have devised multiple visualization views, complemented by a traffic simulation module that allows users to replay specific training scenarios. To validate the utility of our proposed system, we present three comprehensive case studies, incorporate insights from domain experts through interviews, and conduct a user study. These collective efforts underscore the feasibility and effectiveness of MARLens in enhancing our understanding of MARL-based TSC systems and pave the way for more informed and efficient traffic management strategies.
description: 16 pages, 8 figures; Accepted by IEEE Transactions on Visualization and Computer Graphics, 2024
Phenacorhamdia tenebrosa
Creators: name: Giorgis, Pablo
name: Ciotek, Liliana
name: Almirón, Adriana
name: Casciotta, Jorge
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Siluriformes
Heptapteridae
Phenacorhamdia
Phenacorhamdia tenebrosa

description: Phenacorhamdia tenebrosa:
AI 308, 4 ex., 29.4-44.7 mm SL, Argentina, Corrientes province, Paraná river at Ituzaingó (27°30'04.3''S- 56°42'41.6''W), coll: L. Cardinale, November, 2007 MACN-ict 9763, 1 ex., 41.5 mm SL, Argentina, Entre Ríos province, Pre-Delta National Park, Paraná river basin, arroyo La Azotea, Tapera de Chano (32º07'21.5"S - 60º37'58.9"W). coll: P. Giorgis & L. Ciotek
Description
This species can reach 86.4 mm TL (Graça & Pavanelli 2007). Morphometric characters are provided in table 1. Body elongate and slender. Head short (four to five times in SL), depressed, and dorsally covered by thin skin. Eyes small, placed dorsally on head. Anterior nares tubular. Mouth gape terminal, slightly superior. Lower jaw a bit longer than upper jaw, with irregular rows of minute conical teeth. Maxillary barbells surpassing distal border of pectoral fin. Bases of outer and inner mental barbells in a straight line; outer ones reaching pectoral-fin origin, inner ones extended to distal margin of opercular membrane. Dorsal-fin origin nearer snout tip than caudal-fin base. Adipose fin 5.2-5.9 times in SL, its origin placed behind the vertical through anal-fin origin. Caudal fin deeply forked, lower lobe slightly longer than the upper one. Dorsal fin with a weak spine and 6 branched rays, pectoral fin with 8 and pelvic fin with 6 rays. Distal margin of anal fin rounded, with 11 or 12 rays.
Color in life
Ground color of body and head at dorsum and sides brownish, ventrally pale. Head and body at dorsum covered by minutes and numerous dark brown melanophores. Barbells and rays of all fins pigmented as body. Interradial membranes hyaline (Fig. 1).
Habitat
The specimen collected in the arroyo La Azotea, Pre-Delta National Park was found in small muddy pool originated in the floodplain of the Paraná river when the water begins to decline after the flood (Fig. 2).
Distribution
This species was known from the upper Paraná and São Francisco river basins in Brazil. The specimens examined herein come from the Paraná river at Yaciretá dam close to Ituzaingó city and arroyo La Azotea in Pre-Delta National Park (Fig. 3).
description: Published as part of Giorgis, Pablo, Ciotek, Liliana, Almirón, Adriana & Casciotta, Jorge, 2012, First record of Phenacorhamdia tenebrosa (Schubart, 1964) (Siluriformes, Heptapteridae) from the Paraná river basin in Argentina., pp. 1-4 in Ichthyological Contributions of PecesCriollos 24 on page 2, DOI: 10.5281/zenodo.11558202
Usability of Security Administration vs. Usability of End-user Security
Creators: name: Zurko, Mary Ellen
name: Chan, Steve
name: Conti, Greg
name: Beznosov, Konstantin
Publisher: name: Zenodo
Year: 2005
Subjects: security usability
usability of security administration
Usability of End-user Security
Usable Security

description: Having recently received increasing attention, usable security is implicitly all about the end user who employs a computer system to accomplish security-unrelated business or personal goals. However, there is another aspect to usable security. Security administrators have to deal with the order of magnitude more difficult problem of administering large-scale complex enterprise systems, where an error could cost a fortune.  Is the notion of usable security for end-users and security administrators the same? What are the differences in the background, training, goals, constraints, and tools between the administrators and end-users? How do these differences affect the (perception of) usability of the protection mechanisms and other security tools? Can the approaches to improving the security usability for end-users be directly applied to the domain of security administration, and vice versa? With some of the modern-day systems, where users are largely responsible for their own security self-administration, where is the boundary between the end-users and administrators? Can it be defined precisely or is it blurred?  Panelists: Konstantin Beznosov, University of British Columbia (moderator) Mary Ellen Zurko, IBM Steve Chan, Lawrence Berkeley National Laboratory and School of Information Management and Systems at UC Berkeley Greg Conti, United States Military Academy
Correlations between three ELISA protocols measurements of RTS,S/AS01-induced anti-CSP IgG antibodies
Creators: name: Mugo, Robert M. M.
name: Orindi, Benedict
name: Shee, Faiz M. M.
name: Bellamy, Duncan
name: Mwacharo, Jedidah
name: Ewer, Katie J. J.
name: Bejon, Philip
name: Ndungu, Francis M. M.
Publisher: name: Freie Universität Berlin
Year: 2023
Subjects: subject: Enzyme-linked immunoassays
subject: Antibodies
subject: Vaccine development
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie

description: Background RTS,S/AS01 induced anti-circumsporozoite protein (CSP) IgG antibodies are associated with the vaccine efficacy. There is currently no international standardisation of the assays used in the measurement of anti-CSP IgG antibody concentrations for use in evaluations of the vaccine’s immunogenicity and/or efficacy. Here, we compared the levels of RTS,S/AS01 induced anti-CSP IgG antibodies measured using three different enzyme-Linked ImmunoSorbent Assays (ELISA). Methods 196 plasma samples were randomly selected from the 447 samples collected during the RTS,S/AS01 phase IIb trial in 2007 from Kenyan children aged between 5–17 months. The vaccine-induced anti-CSP IgG antibodies were then measured using two independently developed ELISA protocols (‘Kilifi-RTS,S’ and ‘Oxford-R21’) and compared to the results from the reference ‘Ghent-RTS,S’ protocol for the same participants. For each pair of protocols, a deming regression model was fitted. Linear equations were then derived to aid in conversions into equivalent ELISA units. The agreement was assessed using Bland and Altman method. Findings The anti-CSP IgG antibodies measured from the three ELISA protocols were in agreement, and were positively and linearly correlated; ‘Oxford’ and ‘Kilifi’ r = 0.93 (95% CI 0.91–0.95), ‘Oxford’ and ‘Ghent’ r = 0.94 (95% CI: 0.92–0.96), and ‘Kilifi’ and ‘Ghent’ r = 0.97 (95% CI: 0.96–0.98), p<0.0001 for all correlations. Conclusions With the linearity, agreement and correlations established between the assays, conversion equations can be applied to convert results into equivalent units, enabling comparisons of immunogenicities across different vaccines of the same CSP antigens. This study highlights the need for the international harmonisation of anti-CSP antibody measurements.
Theoretical Lower Bounds for the Oven Scheduling Problem
Creators: name: Da Ros, Francesca
name: Lackner, Marie-Louise
name: Musliu, Nysret
Publisher: name: arXiv
Year: 2024
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: The Oven Scheduling Problem (OSP) is an NP-hard real-world parallel batch scheduling problem arising in the semiconductor industry. The objective of the problem is to schedule a set of jobs on ovens while minimizing several factors, namely total oven runtime, job tardiness, and setup costs. At the same time, it must adhere to various constraints such as oven eligibility and availability, job release dates, setup times between batches, and oven capacity limitations. The key to obtaining efficient schedules is to process compatible jobs simultaneously in batches. In this paper, we develop theoretical, problem-specific lower bounds for the OSP that can be computed very quickly. We thoroughly examine these lower bounds, evaluating their quality and exploring their integration into existing solution methods. Specifically, we investigate their contribution to exact methods and a metaheuristic local search approach using simulated annealing. Moreover, these problem-specific lower bounds enable us to assess the solution quality for large instances for which exact methods often fail to provide tight lower bounds.
description: arXiv admin note: text overlap with arXiv:2203.12517
Use of PASP and ZnSO4 mixture as depressant in the flotation separation of chalcopyrite from Cu-activated marmatite
Creators: name: Qian, Wei
name: Fen, Jiao
name: Wenqing, Qin
name: Liuyang, Dong
name: Liqin, Feng
Publisher: name: Faculty of Geoengineering, Mining and Geology, Wrocław University of Technology, Wrocław
Year: 2019
Subjects: Chalcopyrite, Marmatite, Polyaspartic acid, Mixed depressant, Adsorption

description: Physicochemical Problems of Mineral Processing; ISSN 2084-4735
Quantum Measurements and Gates by Code Deformation
Creators: name: Bombin, H.
name: Martin-Delgado, M. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The usual scenario in fault tolerant quantum computation involves certain amount of qubits encoded in each code block, transversal operations between them and destructive measurements of ancillary code blocks. We introduce a new approach in which a single code layer is used for the entire computation, in particular a surface code. Qubits can be created, manipulated and non-destructively measured by code deformations that amount to `cut and paste' operations in the surface. All the interactions between qubits remain purely local in a two-dimensional setting.
description: Revtex4, 6 figures
Gamma-ray probe of the QSO's obscured evolution
Creators: name: Iyudin, A.
name: Greiner, J.
name: Di Cocco, G.
name: Larsson, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The idea that substantial absorption in AGN could be a definite characteristic of the early phases of QSO evolution was invoked to explain the submillimeter observations of X-ray absorbed AGN at z~1 to z~3, that have shown strong emission at 850 mkm. This strong emission is a signature of the copious star formation. In AGN evolution model, the main obscured growth phase of the QSO coincides with formation of the host galaxy spheroid, the completion of which indicates the beginning of the luminous, unobscured phase of the QSO's evolution. The verification of this model at redshifts up to z~6 appears possible via application of the gamma-ray resonant absorption method.
description: 3 pages, 1 figure, contribution to proceedings of International Astrophysics Conference "Relativistic Astrophysics and Cosmology-Einsteins Legacy", held during November 7-11, 2005, Munich, Germany. To be printed in the Springer-Verlag series "ESO Astrophysics Symposia", Eds. B. Aschenbach, V. Burwitz, G. Hasinger, and B. Leibundgut
Multiple-Channel Security Model And Its Implementation Over SSL
Creators: name: Song, Yong
Publisher: name: Zenodo
Year: 2005
Subjects: MC-SSL
SSL
mobile security
TLS
network security
proxy

description: Multiple-Channel SSL (MC-SSL) is a new model and protocol to secure client-server communication. In contrast to SSL, which provides a single end-to-end secure channel, MCSSL can provide applications with multiple channels, and each channel can have a various number of application proxies, its own cipher suite and data flow direction. MC-SSL enjoys a few advantages over SSL including end-to-end security and selective security. This thesis first introduces the background and analyzes some security-related problems in client-server communications, especially when resource-constrained handheld devices are involved. The multiple-channel model of MC-SSL is then presented as a solution, and compared with other related work. This thesis further focuses on the protocol design and implementation of MC-SSL.
Secondary and Approximate Authorization Model (SAAM) and its Application to Bell-LaPadula Policies
Creators: name: Beznosov, Konstantin
Publisher: name: Zenodo
Year: 2006
Subjects: SAAM
JAMES
access control
Bell-LaPadulla
BLP

description: The talk defines the secondary and approximate authorization model (SAAM). In SAAM, approximate authorization responses are inferred from cached primary responses, and therefore provide an alternative source of access control decisions in the event that the authorization server is unavailable or slow. The ability to compute approximate authorizations improves the reliability and performance of access control sub-systems and ultimately the application systems themselves. The operation of a system that employs SAAM depends on the type of access control policy it implements. We propose and analyze algorithms for computing secondary authorizations in the case of policies based on the Bell-LaPadula model. In this context, we define a dominance graph, and describe its construction and usage for generating secondary responses to authorization requests. Preliminary results of evaluating SAAM-BLP algorithms demonstrate a 15% increase in the number of authorization requests that can be served without consulting access control policies.
Hybrid Semantic-Shannon Communications
Creators: name: Evgenidis, Nikos G.
name: Mitsiou, Nikos A.
name: Tegos, Sotiris A.
name: Diamantoulakis, Panagiotis D.
name: Sarigiannidis, Panagiotis
name: Krikidis, Ioannis
name: Karagiannidis, George K.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Semantic communications are considered a promising beyond-Shannon/bit paradigm to reduce network traffic and increase reliability, thus making wireless networks more energy efficient, robust, and sustainable. However, the performance is limited by the efficiency of the semantic transceivers, i.e., the achievable "similarity" between the transmitted and received signals. Under strict similarity conditions, semantic transmission may not be applicable and bit communication is mandatory. In this paper, for the first time in the literature, we propose a multi-carrier Hybrid Semantic-Shannon communication system where, without loss of generality, the case of text transmission is investigated. To this end, a joint semantic-bit transmission selection and power allocation optimization problem is formulated, aiming to minimize two transmission delay metrics widely used in the literature, subject to strict similarity thresholds. Despite their non-convexity, both problems are decomposed into a convex and a mixed linear integer programming problem by using alternating optimization, both of which can be solved optimally. Furthermore, to improve the performance of the proposed hybrid schemes, a novel association of text sentences to subcarriers is proposed based on the data size of the sentences and the channel gains of the subcarriers. We show that the proposed association is optimal in terms of transmission delay. Numerical simulations verify the effectiveness of the proposed hybrid semantic-bit communication scheme and the derived sentence-to-subcarrier association, and provide useful insights into the design parameters of such systems.
Experimental analysis of the Strato-rotational Instability in a cylindrical Couette flow
Creators: name: Bars, M. Le
name: Gal, P. Le
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This study is devoted to the experimental analysis of the Strato-rotational Instability (SRI). This instability affects the classical cylindrical Couette flow when the fluid is stably stratified in the axial direction. In agreement with recent theoretical and numerical analyses, we describe for the first time in detail the destabilization of the stratified flow below the Rayleigh line (i.e. the stability threshold without stratification). We confirm that the unstable modes of the SRI are non axisymmetric, oscillatory, and take place as soon as the azimuthal linear velocity decreases along the radial direction. This new instability is relevant for accretion disks.
description: 4 pages, 4 figures. PRL in press 2007
Voice Activity Detection for Ultrasound-based Silent Speech Interfaces using Convolutional Neural Networks
Creators: name: Shandiz, Amin Honarmandi
name: Tóth, László
Publisher: name: arXiv
Year: 2021
Subjects: subject: Sound (cs.SD)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Voice Activity Detection (VAD) is not easy task when the input audio signal is noisy, and it is even more complicated when the input is not even an audio recording. This is the case with Silent Speech Interfaces (SSI) where we record the movement of the articulatory organs during speech, and we aim to reconstruct the speech signal from this recording. Our SSI system synthesizes speech from ultrasonic videos of the tongue movement, and the quality of the resulting speech signals are evaluated by metrics such as the mean squared error loss function of the underlying neural network and the Mel-Cepstral Distortion (MCD) of the reconstructed speech compared to the original. Here, we first demonstrate that the amount of silence in the training data can have an influence both on the MCD evaluation metric and on the performance of the neural network model. Then, we train a convolutional neural network classifier to separate silent and speech-containing ultrasound tongue images, using a conventional VAD algorithm to create the training labels from the corresponding speech signal. In the experiments our ultrasound-based speech/silence separator achieved a classification accuracy of about 85\% and an AUC score around 86\%.
description: 12 pages, 7 tables, 4 figures
Additional file 3 of Genetic deletion of Krüppel-like factor 11 aggravates traumatic brain injury
Creators: name: Zhou, Chao
name: Sun, Ping
name: Hamblin, Milton H.
name: Yin, Ke-Jie
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Neuroscience
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Mental Health

description: Additional file 3: Table S2. List of primary antibodies used in this study.
Antiproton and Positron Signal Enhancement in Dark Matter Mini-Spikes Scenarios
Creators: name: Brun, P.
name: Bertone, G.
name: Lavalle, J.
name: Salati, P.
name: Taillet, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The annihilation of dark matter (DM) in the Galaxy could produce specific imprints on the spectra of antimatter species in Galactic cosmic rays, which could be detected by upcoming experiments such as PAMELA and AMS02. Recent studies show that the presence of substructures can enhance the annihilation signal by a "boost factor" that not only depends on energy, but that is intrinsically a statistical property of the distribution of DM substructures inside the Milky Way. We investigate a scenario in which substructures consist of $\sim 100$ "mini-spikes" around intermediate-mass black holes. Focusing on primary positrons and antiprotons, we find large boost factors, up to a few thousand, that exhibit a large variance at high energy in the case of positrons and at low energy in the case of antiprotons. As a consequence, an estimate of the DM particle mass based on the observed cut-off in the positron spectrum could lead to a substantial underestimate of its actual value.
description: 13 pages, 9 figures, minor changes, version accepted for publication in PRD
Resource Access Decision Service for CORBA-based Distributed Systems
Creators: name: Beznosov, Konstantin
name: Deng, Yi
name: Blakley, Bob
name: Burt, Carol
name: Barkley, John
Publisher: name: Zenodo
Year: 2006
Subjects: RAD
Resource Access Decision
CORBA
access control
authorization service
Engineering Security Mechanisms

description: Decoupling authorization logic from application logic allows applications with fine-grain access control requirements to be independent from a particular access control policy and from factors that are used in authorization decisions as well as access control models, no matter how dynamic those polices and factors are. It also enables elaborate and consistent access control policies across heterogeneous systems. We present design of a service for re-source access authorization in distributed systems. The service enables to decouple authorization logic from application functionality. Although the described service is based on CORBA technology, the design approach can be successfully used in any distributed computing environment.
Additional file 4 of Genetic deletion of Krüppel-like factor 11 aggravates traumatic brain injury
Creators: name: Zhou, Chao
name: Sun, Ping
name: Hamblin, Milton H.
name: Yin, Ke-Jie
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Neuroscience
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Mental Health

description: Additional file 4: Table S3. Pearson correlation analysis (r value).
Control of a polar order via magnetic field in a vector-chiral magnet
Creators: name: Dragičević, Martina
name: Góngora, David Rivas
name: Rapljenović, Željko
name: Herak, Mirta
name: Brusar, Vedran
name: Altus, Damir
name: Pregelj, Matej
name: Zorko, Andrej
name: Berger, Helmuth
name: Arčon, Denis
name: Ivek, Tomislav
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Vector-chiral (VC) antiferromagnetism is a spiral-like ordering of spins which may allow ferroelectricity to occur due to loss of space inversion symmetry. In this paper we report direct experimental observation of ferroelectricity in the VC phase of $β$-TeVO$_4$, a frustrated spin chain system with pronounced magnetic anisotropy and a rich phase diagram. Saturation polarization is proportional to neutron scattering intensities that correspond to the VC magnetic reflection. This implies that inverse Dzyaloshinskii-Moriya mechanism is responsible for driving electric polarization. Linear magnetoelectric coupling is absent, however an unprecedented dependence of electric coercive field on applied magnetic field reveals a novel way of manipulating multiferroic information.
description: submitted to PRB Letter, 7 pages, 4 figures
Self-Organised Localisation
Creators: name: Giudice, Gian F.
name: McCullough, Matthew
name: You, Tevong
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We describe a new phenomenon in quantum cosmology: self-organised localisation. When the fundamental parameters of a theory are functions of a scalar field subject to large fluctuations during inflation, quantum phase transitions can act as dynamical attractors. As a result, the theory parameters are probabilistically localised around the critical value and the Universe finds itself at the edge of a phase transition. We illustrate how self-organised localisation could account for the observed near-criticality of the Higgs self-coupling, the naturalness of the Higgs mass, or the smallness of the cosmological constant.
description: 104 pages, 12 figures. v3: Measure problem discussion extended and references added. Version to be published in JHEP
Direct Visualization of Native Defects in Graphite and Their Effect on the Electronic Properties of Bernal-Stacked Bilayer Graphene
Creators: name: Joucken, Frederic
name: Bena, Cristina
name: Ge, Zhehao
name: Quezada-Lopez, Ebert A.
name: Pinon, Sarah
name: Kaladzhyan, Vardan
name: Taniguchi, Takashi
name: Watanabe, Kenji
name: Ferreira, Aires
name: Velasco, Jairo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Graphite crystals used to prepare graphene-based heterostructures are generally assumed to be defect free. We report here scanning tunneling microscopy results that show graphite commonly used to prepare graphene devices can contain a significant amount of native defects. Extensive scanning of the surface allows us to determine the concentration of native defects to be 6.6$\times$10$^8$ cm$^{-2}$. We further study the effects of these native defects on the electronic properties of Bernal-stacked bilayer graphene. We observe gate-dependent intravalley scattering and successfully compare our experimental results to T-matrix-based calculations, revealing a clear carrier density dependence in the distribution of the scattering vectors. We also present a technique for evaluating the spatial distribution of short-scale scattering. A theoretical analysis based on the Boltzmann transport equation predicts that the dilute native defects identified here are an important extrinsic source of scattering, ultimately setting the mobility at low temperatures.
description: Accepted in Nano Letters
Prospect-theoretic Q-learning
Creators: name: Borkar, Vivek S.
name: Chandak, Siddharth
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We consider a prospect theoretic version of the classical Q-learning algorithm for discounted reward Markov decision processes, wherein the controller perceives a distorted and noisy future reward, modeled by a nonlinearity that accentuates gains and underrepresents losses relative to a reference point. We analyze the asymptotic behavior of the scheme by analyzing its limiting differential equation and using the theory of monotone dynamical systems to infer its asymptotic behavior. Specifically, we show convergence to equilibria, and establish some qualitative facts about the equilibria themselves.
description: Published in Systems and Control Letters. 16 pages, 8 figures
Additional file 9 of Profile of chimeric RNAs and TMPRSS2-ERG e2e4 isoform in neuroendocrine prostate cancer
Creators: name: Wang, Qiong
name: Chen, Junxiu
name: Singh, Sandeep
name: Xie, Zhongqiu
name: Qin, Fujun
name: Shi, Xinrui
name: Cornelison, Robert
name: Li, Hui
name: Huang, Hai
Publisher: name: figshare
Year: 2022
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biological Sciences not elsewhere classified
subject: Cancer

description: Additional file 9: Table S2. The characteristics of four NEPC specific chimeric RNAs.
The angular correlations of galaxies in the COSMOS field
Creators: name: McCracken, H. J.
name: Peacock, J. A.
name: Guzzo, L.
name: Capak, P.
name: Porciani, C.
name: Scoville, N.
name: Aussel, H.
name: Finoguenov, A.
name: James, J. B.
name: Kitzbichler, M. G.
name: Koekemoer, A.
name: Leauthaud, A.
name: Fèvre, O. Le
name: Massey, R.
name: Mellier, Y.
name: Mobasher, B.
name: Norberg, P.
name: Rhodes, J.
name: Sanders, D. B.
name: Sasaki, S. S.
name: Taniguchi, Y.
name: Thompson, D. J.
name: White, S. D. M.
name: El-Zant, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present measurements of the two-point galaxy angular correlation function w(θ) in the COSMOS field. Independent determinations of w(θ) as a function of magnitude limit are presented for both the HST ACS catalog and also for the ground-based data from Subaru and the CFHT. Despite having significantly different masks, these three determinations agree well. At bright magnitudes (IAB<22), our data generally match very well with existing measurements and with mock catalogs based on semi-analytic galaxy formation calculations of Kitzbichler and White from the Millennium Simulation. The exception is that our result is at the upper end of the expected cosmic variance scatter for θ> 10 arcmin, which we attribute to a particularly rich structure known to exist at z~0.8. For fainter samples, however, the level of clustering is somewhat higher than reported by some previous studies: in all three catalogues we find w(θ=1')~0.014 at a median IAB magnitude of 24. At these very faintest magnitudes, our measurements agree well with the latest determinations from the Canada-France Legacy Survey. This level of clustering is approximately double what is predicted by the semi-analytic catalogs (at all angles). The semi-analytic results allow an estimate of cosmic variance, which is too small to account for the discrepancy. We therefore conclude that the mean amplitude of clustering at this level is higher than previously estimated.
description: Six pages, five figures. Accepted for publication in the ApJS COSMOS special issue, Sept. 2007
Generalization of a method by Mossotti for initial orbit determination
Creators: name: Gronchi, Giovanni F.
name: Baù, Giulio
name: Rodríguez, Óscar
name: Jedicke, Robert
name: Moeyens, Joachim
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences
subject: 70-XX

description: Here we revisit an initial orbit determination method introduced by O. F. Mossotti employing four geocentric sky-plane observations and a linear equation to compute the angular momentum of the observed body. We then extend the method to topocentric observations, yielding a quadratic equation for the angular momentum. The performance of the two versions are compared through numerical tests with synthetic asteroid data using different time intervals between consecutive observations and different astrometric errors. We also show a comparison test with Gauss's method using simulated observations with the expected cadence of the VRO-LSST telescope.
description: 22 pages, 9 figures
On the theory of Biot-patchy-squirt mechanism for wave propagation in partially saturated double-porosity medium
Creators: name: Sun, Weitao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Reservoir rocks are usually composed of a coherent heterogeneous porous matrix saturated by multiple fluids. At long wavelength limit, the composite material of solid skeleton is usually regarded as homogeneous media. However, at grain scale or high loading rate, non-uniform fluid flow at internal interface of heterogeneity plays essential role in wave dispersion and attenuation. Formulating wave propagation in partially saturated and fractured rocks is challenging and of great interests in geoscience. Here we raise a Biot-patchy-squirt (BIPS) model to characterize wave dispersion/attenuation in fractured poroelastic media saturated by two immiscible fluids. BIPS model incorporates the mechanism of local fluid-interface flow (LFIF) and squirt flow into global fluid flow simultaneously. Theoretical analysis show that wave attenuations caused by viscous dissipation, squirt flow and patchy interface vibration are distinct from each other. BIPS is intrinsically consistent with Biot theory, squirt and LFIF model and reduces to such mechanism in limiting conditions. More interestingly, numerical results show that coupling between LFIF and squirt flow is of evident importance to P-wave dispersion and attenuation. Comparisons with experimental data indicate that BIPS model is computationally reliable and in reasonably good agreement with experimental data. This study advance our understanding of the fundamental physics of wave propagation in natural reservoir rocks and push forward the potential applications of the triple dispersion/attenuation mechanism to wave velocity estimation in deep earth.
description: 34pages, 8 figures