cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Theoretical Analyses of Multiobjective Evolutionary Algorithms on Multimodal Objectives
Creators: name: Zheng, Weijie
name: Doerr, Benjamin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: The theoretical understanding of MOEAs is lagging far behind their success in practice. In particular, previous theory work considers mostly easy problems that are composed of unimodal objectives.
 As a first step towards a deeper understanding of how evolutionary algorithms solve multimodal multiobjective problems, we propose the OJZJ problem, a bi-objective problem composed of two objectives isomorphic to the classic jump function benchmark. We prove that SEMO with probability one does not compute the full Pareto front, regardless of the runtime. In contrast, for all problem sizes $n$ and all jump sizes ${k \in [4..\frac n2 - 1]}$, the global SEMO (GSEMO) covers the Pareto front in an expected number of $Θ((n-2k)n^{k})$ iterations. For $k = o(n)$, we also show the tighter bound $\frac 32 e n^{k+1} \pm o(n^{k+1})$, which might be the first runtime bound for an MOEA that is tight apart from lower-order terms. We also combine the GSEMO with two approaches that showed advantages in single-objective multimodal problems. When using the GSEMO with a heavy-tailed mutation operator, the expected runtime improves by a factor of at least $k^{Ω(k)}$. When adapting the recent stagnation-detection strategy of Rajabi and Witt (2022) to the GSEMO, the expected runtime also improves by a factor of at least $k^{Ω(k)}$ and surpasses the heavy-tailed GSEMO by a small polynomial factor in $k$. Via an experimental analysis, we show that these asymptotic differences are visible already for small problem sizes: A factor-$5$ speed-up from heavy-tailed mutation and a factor-$10$ speed-up from stagnation detection can be observed already for jump size~$4$ and problem sizes between $10$ and $50$. Overall, our results show that the ideas recently developed to aid single-objective evolutionary algorithms to cope with local optima can be effectively employed also in multiobjective optimization.
description: Extended version of a paper that appeared in the proceedings of AAAI 2021. 49 pages. Latest version only fixed two bugs in the references
First Measurement of Electron Neutrino Scattering Cross Section on Argon
Creators: name: ArgoNeuT Collaboration
name: Acciarri, R.
name: Adams, C.
name: Asaadi, J.
name: Baller, B.
name: Basque, V.
name: Bolton, T.
name: Bromberg, C.
name: Cavanna, F.
name: Edmunds, D.
name: Fitzpatrick, R. S.
name: Fleming, B.
name: Green, P.
name: James, C.
name: Lepetic, I.
name: Littlejohn, B. R.
name: Luo, X.
name: Palamara, O.
name: Scanavini, G.
name: Soderberg, M.
name: Spitz, J.
name: Szelc, A. M.
name: Wu, W.
name: Yang, T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We report the first electron neutrino cross section measurements on argon, based on data collected by the ArgoNeuT experiment running in the GeV-scale NuMI beamline at Fermilab. A flux-averaged $ν_e + \overlineν_e$ total and a lepton angle differential cross section are extracted using 13 $ν_e$ and $\overlineν_e$ events identified with fully-automated selection and reconstruction. We employ electromagnetic-induced shower characterization and analysis tools developed to identify $ν_e/\overlineν_e$-like events among complex interaction topologies present in ArgoNeuT data ($\langle E_{\barν_e} \rangle = 4.3$ GeV and $\langle E_{ν_e} \rangle = 10.5$ GeV). The techniques are widely applicable to searches for electron-flavor appearance at short- and long-baseline using liquid argon time projection chamber technology. Notably, the data-driven studies of GeV-scale $ν_e/\overlineν_e$ interactions presented in this Letter probe an energy regime relevant for future DUNE oscillation physics.
description: added acknowledgements
A novel method to calculate the electric field using solid angles
Creators: name: Zuo, Fulin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: A new method to calculate the electric field inside a spherical shell with surface charge in terms of solid angle is presented. The integral can be readily carried out without invoking special functions typically used for this classical problem. For a flat surface of uniform charge density, the electric field normal to the surface is shown to be proportional to the solid angle subtended by the surface only.
Continuous iterative algorithms for anti-Cheeger cut
Creators: name: Shao, Sihong
name: Yang, Chuan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: Numerical Analysis (math.NA)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 90C27, 05C85, 65K10, 90C26, 90C32

description: As a judicious correspondence to the classical maxcut, the anti-Cheeger cut has more balanced structure, but few numerical results on it have been reported so far. In this paper, we propose a continuous iterative algorithm (CIA) for the anti-Cheeger cut problem through fully using an equivalent continuous formulation. It does not need rounding at all and has advantages that all subproblems have explicit analytic solutions, the objective function values are monotonically updated and the iteration points converge to a local optimum in finite steps via an appropriate subgradient selection. It can also be easily combined with the maxcut iterations for breaking out of local optima and improving the solution quality thanks to the similarity between the anti-Cheeger cut problem and the maxcut problem. The performance of CIAs is fully demonstrated through numerical experiments on G-set from two aspects: one is on the solution quality where we find that the approximate solutions obtained by CIAs are of comparable quality to those by the multiple search operator heuristic method; the other is on the computational cost where we show that CIAs always run faster than the often-used continuous iterative algorithm based on the rank-two relaxation.
description: Accepted by Communications in Mathematical Sciences on September 12, 2024
Eriothrix monticola
Creators: name: Schlüsslmayr, Gerhard
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Tachinidae
Eriothrix
Eriothrix monticola

description: Eriothrix monticola (EGGER, 1856)
OÖ, Gmunden, Traunstein, Gipfel, 1691m, 31.7.17, 2 Ex.
Neu für Oberösterreich.
description: Published as part of Schlüsslmayr, Gerhard, 2018, Erstnachweise von Fliegen (Diptera) für Österreich und einige Bundesländer, pp. 765-800 in Linzer biologische Beiträge 50 (1) on page 794, DOI: 10.5281/zenodo.4004374
Electrostatic field-driven supercurrent suppression in ionic-gated metallic Josephson nanotransistors
Creators: name: Paolucci, Federico
name: Crisà, Francesco
name: De Simoni, Giorgio
name: Bours, Lennart
name: Puglia, Claudio
name: Strambini, Elia
name: Roddaro, Stefano
name: Giazotto, Francesco
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Recent experiments have shown the possibility of tuning the transport properties of metallic nanosized superconductors through a gate voltage. These results renewed the longstanding debate on the interaction between electrostatic fields and superconductivity. Indeed, different works suggested competing mechanisms as the cause of the effect: an unconventional electric field-effect or quasiparticle injection. Here, we provide conclusive evidence for the electrostatic-field-driven control of the supercurrent in metallic nanosized superconductors, by realizing ionic-gated superconducting field-effect nanotransistors (ISFETs) where electron injection is impossible. Our Nb ISFETs show giant suppression of the superconducting critical current of up to 45%. Moreover, the bipolar supercurrent suppression observed in different ISFETs, together with invariant critical temperature and normal-state resistance, also excludes conventional charge accumulation/depletion. Therefore, the microscopic explanation of this effect calls upon a novel theory able to describe the nontrivial interaction of static electric fields with conventional superconductivity.
description: 9 pages, 6 figures
Early Exit or Not: Resource-Efficient Blind Quality Enhancement for Compressed Images
Creators: name: Xing, Qunliang
name: Xu, Mai
name: Li, Tianyi
name: Guan, Zhenyu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Lossy image compression is pervasively conducted to save communication bandwidth, resulting in undesirable compression artifacts. Recently, extensive approaches have been proposed to reduce image compression artifacts at the decoder side; however, they require a series of architecture-identical models to process images with different quality, which are inefficient and resource-consuming. Besides, it is common in practice that compressed images are with unknown quality and it is intractable for existing approaches to select a suitable model for blind quality enhancement. In this paper, we propose a resource-efficient blind quality enhancement (RBQE) approach for compressed images. Specifically, our approach blindly and progressively enhances the quality of compressed images through a dynamic deep neural network (DNN), in which an early-exit strategy is embedded. Then, our approach can automatically decide to terminate or continue enhancement according to the assessed quality of enhanced images. Consequently, slight artifacts can be removed in a simpler and faster process, while the severe artifacts can be further removed in a more elaborate process. Extensive experiments demonstrate that our RBQE approach achieves state-of-the-art performance in terms of both blind quality enhancement and resource efficiency. The code is available at https://github.com/RyanXingQL/RBQE.
description: Accepted by ECCV 2020. v5 updates: enlarge character size; correct titlerunning; add publishment reference; add open-sourced url
Topology conserving gauge action and the overlap-Dirac operator
Creators: name: Fukaya, H.
name: Hashimoto, S.
name: Hirohashi, T.
name: Ogawa, K.
name: Onogi, T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We apply the topology conserving gauge action proposed by Luescher to the four-dimensional lattice QCD simulation in the quenched approximation. With this gauge action the topological charge is stabilized along the hybrid Monte Carlo updates compared to the standard Wilson gauge action. The quark potential and renormalized coupling constant are in good agreement with the results obtained with the Wilson gauge action. We also investigate the low-lying eigenvalue distribution of the hermitian Wilson-Dirac operator, which is relevant for the construction of the overlap-Dirac operator.
description: 27pages, 11figures, accepted version
Ernestia puparum
Creators: name: Schlüsslmayr, Gerhard
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Tracheophyta
Magnoliopsida
Myrtales
Melastomataceae
Ernestia
Ernestia puparum

description: Ernestia puparum (FABRICIUS, 1794)
Bgld, Jois, Junger Berg, 26.3.17; Breitenbrunn, Alter Berg, 26.3.17.
Neu für Burgenland.
description: Published as part of Schlüsslmayr, Gerhard, 2018, Erstnachweise von Fliegen (Diptera) für Österreich und einige Bundesländer, pp. 765-800 in Linzer biologische Beiträge 50 (1) on page 795, DOI: 10.5281/zenodo.4004374
Practical and Configurable Network Traffic Classification Using Probabilistic Machine Learning
Creators: name: Chen, Jiahui
name: Breen, Joe
name: Phillips, Jeff M.
name: Van der Merwe, Jacobus
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Network traffic classification that is widely applicable and highly accurate is valuable for many network security and management tasks. A flexible and easily configurable classification framework is ideal, as it can be customized for use in a wide variety of networks. In this paper, we propose a highly configurable and flexible machine learning traffic classification method that relies only on statistics of sequences of packets to distinguish known, or approved, traffic from unknown traffic. Our method is based on likelihood estimation, provides a measure of certainty for classification decisions, and can classify traffic at adjustable certainty levels. Our classification method can also be applied in different classification scenarios, each prioritizing a different classification goal. We demonstrate how our classification scheme and all its configurations perform well on real-world traffic from a high performance computing network environment.
description: Published in the Springer Cluster Computing journal
Computation and Communication Co-Design for Real-Time Monitoring and Control in Multi-Agent Systems
Creators: name: Tripathi, Vishrant
name: Ballotta, Luca
name: Carlone, Luca
name: Modiano, Eytan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: We investigate the problem of co-designing computation and communication in a multi-agent system (e.g. a sensor network or a multi-robot team). We consider the realistic setting where each agent acquires sensor data and is capable of local processing before sending updates to a base station, which is in charge of making decisions or monitoring phenomena of interest in real time. Longer processing at an agent leads to more informative updates but also larger delays, giving rise to a delay-accuracy-tradeoff in choosing the right amount of local processing at each agent. We assume that the available communication resources are limited due to interference, bandwidth, and power constraints. Thus, a scheduling policy needs to be designed to suitably share the communication channel among the agents. To that end, we develop a general formulation to jointly optimize the local processing at the agents and the scheduling of transmissions. Our novel formulation leverages the notion of Age of Information to quantify the freshness of data and capture the delays caused by computation and communication. We develop efficient resource allocation algorithms using the Whittle index approach and demonstrate our proposed algorithms in two practical applications: multi-agent occupancy grid mapping in time-varying environments, and ride sharing in autonomous vehicle networks. Our experiments show that the proposed co-design approach leads to a substantial performance improvement (18-82% in our tests).
description: accepted at WiOpt 2021
Hyperelliptic Theta-Functions and Spectral Methods
Creators: name: Frauendiener, J.
name: Klein, C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Algebraic Geometry (math.AG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: A code for the numerical evaluation of hyperelliptic theta-functions is presented. Characteristic quantities of the underlying Riemann surface such as its periods are determined with the help of spectral methods. The code is optimized for solutions of the Ernst equation where the branch points of the Riemann surface are parameterized by the physical coordinates. An exploration of the whole parameter space of the solution is thus only possible with an efficient code. The use of spectral approximations allows for an efficient calculation of all quantities in the solution with high precision. The case of almost degenerate Riemann surfaces is addressed. Tests of the numerics using identities for periods on the Riemann surface and integral identities for the Ernst potential and its derivatives are performed. It is shown that an accuracy of the order of machine precision can be achieved. These accurate solutions are used to provide boundary conditions for a code which solves the axisymmetric stationary Einstein equations. The resulting solution agrees with the theta-functional solution to very high precision.
description: 25 pages, 12 figures
CIV emission line properties and uncertainties in black hole mass estimates of z ~ 3.5 quasars
Creators: name: Zuo, Wenwen
name: Wu, Xue-Bing
name: Fan, Xiaohui
name: Green, Richard
name: Yi, Weiming
name: Schulze, Andreas
name: Wang, Ran
name: Bian, Fuyan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Using a high luminosity ($L_{\rm bol} \sim 10^{47.5} - 10^{48.3}$ erg s$^{-1}$), high redshift ($3.2 < z < 3.8$) quasar sample of 19 quasars with optical and near-infrared spectroscopy, we investigate the reliability of the CIV-based black hole mass estimates ($M_{\rm BH}$). The median logarithm of the CIV- and H$β$-based $M_{\rm BH}$ ratios is 0.110 dex with the scatter of 0.647 dex. The CIV-to-H$β$ BH mass differences are significantly correlated with the CIV FWHMs, blueshifts and asymmetries. Corrections of the CIV FWHM using the blueshift and asymmetry reduce the scatter of the mass differences by $\sim$ 0.04-0.2 dex. Quasars in our sample accrete at the Eddington ratio $R_{\rm EDD}>0.3$ and cover a considerable range of blueshifts, with 18/19 of the quasars showing CIV blueshifts (with the median value of 1126 km s$^{-1}$) and 14/19 of the quasars showing CIV blueshifts larger than 500 km s$^{-1}$. It suggests that not all quasars with high Eddington ratios show large blueshifts. The Baldwin effect between the CIV rest-frame equivalent width (REW) and the continuum luminosity at 1350 $\overset{\lower.5em\circ}{\mathrm{A}}$ is not seen, likely due to the limited luminosity range of our sample. We find a lack of flux in the red wing of the composite spectrum with larger CIV blueshift, and detect a higher ratio of [OIII] quasars with REW$_{\rm [OIII]}>5$ $\overset{\lower.5em\circ}{\mathrm{A}}$ in the subsample with lower CIV blueshift. It is more likely that they are caused by the combination of the Eddington ratio and the orientation effect.
description: 17 pages, 12 figures with additional 6 pages and 2 figures in the appendix. Accepted for publication in ApJ
Exploring CP-violation, via heavy neutrino oscillations, in rare B meson decays at Belle II
Creators: name: Cvetic, Gorazd
name: Kim, C. S.
name: Mendizabal, Sebastian
name: Zamora-Saa, Jilberto
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this article we study the rare B-meson decay via two on-shell almost-degenerate Majorana Heavy Neutrinos, into two charged leptons and two pseudoscalar mesons ($B^{\pm} \to D^0 \ell^{\pm}_1 \ell^{\pm}_2 π^{\mp}$). We consider the scenario where the heavy neutrino masses are $\sim 2$ GeV and the heavy-light mixing coefficients are $|B_{\ell N}|^2 \sim 10^{-5}$, and evaluate the possibility to measure the CP-asymmetry at Belle II. We present some realistic conditions under which the asymmetry could be detected.
Quantization of scalar perturbations in brane-world inflation
Creators: name: Yoshiguchi, Hiroyuki
name: Koyama, Kazuya
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider a quantization of scalar perturbations about a de Sitter brane in a 5-dimensional anti-de Sitter (AdS) bulk spacetime. We first derive the second order action for a master variable $Ω$ for 5-dimensional gravitational perturbations. For a vacuum brane, there is a continuum of normalizable Kaluza-Klein (KK) modes with $m>3H/2$. There is also a light radion mode with $m=\sqrt{2}H$ which satisfies the junction conditions for two branes, but is non-normalizable for a single brane model. We perform the quantization of these bulk perturbations and calculate the effective energy density of the projected Weyl tensor on the barne. If there is a test scalar field perturbation on the brane, the $m^2 = 2H^2$ mode together with the zero-mode and an infinite ladder of discrete tachyonic modes become normalizable in a single brane model. This infinite ladder of discrete modes as well as the continuum of KK modes with $m>3H/2$ introduce corrections to the scalar field perturbations at first-order in a slow-roll expansion. We derive the second order action for the Mukhanov-Sasaki variable coupled to the bulk perturbations which is needed to perform the quantization and determine the amplitude of scalar perturbations generated during inflation on the brane.
description: 14 pages
CHOICES OF SOIL CONSERVATION METHODS ON KWAZULU-NATAL COMMERCIAL SUGARCANE FARMS
Creators: name: Ferrer, Stuart R.D.
name: Nieuwoudt, W. Lieb
name: Ferrer, Stuart R.D.
name: Nieuwoudt, W. Lieb
Publisher: name: Unknown
Year: 1998
Subjects: Crop Production/Industries
Resource /Energy Economics and Policy

description: A Principal components analysis and multiple regression techniques are used to analyse heterogeneity in 53 KwaZulu-Natal sugarcane farmers soil conservation decisions. Minimum tillage and construction of water carrying terraces are the most common methods used, whereas trash mulching is least commonly practised. Results indicate that farmers' demands for soil conservation, their demands for other attributes of soil conservation practices and interactions between practices are important to explaining their choices. Intra-farm variation in use of soil conservation methods is small relative to inter-farm variation. Education programmes, provision of information, and improving farmers' technical soil conservation skills have implications for aggregate soil conservation adoption, whereas the types of information provided, fire insurance programmes and soil conservation subsidies have implications for the combinations of practices adopted.
Can Decentralized Control Outperform Centralized? The Role of Communication Latency
Creators: name: Ballotta, Luca
name: Jovanović, Mihailo R.
name: Schenato, Luca
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: Multiagent Systems (cs.MA)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: C.2.1
subject: 93B70 (Primary) 93C43 (Secondary)

description: In this paper, we examine the influence of communication latency on performance of networked control systems. Even though distributed control architectures offer advantages in terms of communication, maintenance costs, and scalability, it is an open question how communication latency that varies with network topology influences closed-loop performance. For networks in which delays increase with the number of links, we establish the existence of a fundamental performance trade-off that arises from control architecture. In particular, we utilize consensus dynamics with single- and double-integrator agents to show that, if delays increase fast enough, a sparse controller with nearest neighbor interactions can outperform the centralized one with all-to-all communication topology.
description: 12 pages, 13 figures; accepted for publication on IEEE Transactions on Control of Network Systems; final accepted version
Many-body localization transition in large quantum spin chains: The mobility edge
Creators: name: Chanda, Titas
name: Sierant, Piotr
name: Zakrzewski, Jakub
Publisher: name: arXiv
Year: 2020
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Thermalization of random-field Heisenberg spin chain is probed by time evolution of density correlation functions. Studying the impacts of average energies of initial product states on dynamics of the system, we provide arguments in favor of the existence of a mobility edge in the large system-size limit.
description: 7+3 pages, 7+4 figures. Close to published version
Examining partnerships in amateur sport : the case of a Canadian national sport centre
Creators: name: Babiak, Katherine M
Publisher: name: University of British Columbia
Year: 2009

description: This study explored the dynamics, challenges, and complexities encountered in forming, managing, and evaluating the interorganizational relationships of a nonprofit organization and its partners in the public, nonprofit, and commercial sectors. Using a partnership process model developed from various theoretical frameworks (Kouwenhoven, 1993; Oliver, 1990; Provan & Milward, 2001; Wood & Gray, 1991), this study examined three phases of partnership relationships (i.e., formation, management, and evaluation) to gain a better understanding of the interactions among partnering organizations in Canadian sport. Qualitative research methods were employed to investigate partnerships of one National Sport Centre (NSC). Data were collected from three sources: 28 interviews, 110 organizational documents, and attendance at three organizational meetings. Interviews, relevant document passages, and field notes were transcribed and analyzed using Atlas.ti, a qualitative analysis software program. Results indicated that environmental and organizational conditions facilitated the formation of partnerships. Interdependence among organizations, presence of a broker, presence of a network, and convergence of objectives were evident. Specific reasons for partnership formation included efficiency, stability, necessity, legitimacy, reciprocity, and asymmetry. Partnership management structures and processes were central to interactions between organizations. Partners struggled to find a balance between pressures to compete and pressures to collaborate. Power imbalances, political dynamics, and control issues primarily related to resource concerns existed, and in some cases weakened the bonds among partners. Some partnerships were formalized, while others were loosely structured and primarily based on mutual trust, previous history, and personal interest. Ambiguities regarding roles and responsibilities, and 'representativeness' influenced how partners interacted and contributed to challenges in managing partnerships. Allocating resources was a prime concern for the organizations. Several levels of analysis for outcome evaluation existed. At the community level, the performance of NSC athletes at international competitions' was a key measure of success. At the network level, effective coordination of programs and services contributing to improved performances of athletes was perceived as an important measure of effectiveness. Finally at the organizational level, factors including ability to attract and retain partners, ability to remain economically viable through resource acquisition, and achieving legitimacy were all viewed as criteria to evaluate partnership effectiveness.
Comparative Analysis of Genomic Data To Determine Codon Usage and Amino Acid Usage in Tropheryma Whipplei
Creators: name: Joshi, Amit
name: Kaushik, Vikas
name: Singh, Joginder
Publisher: name: figshare
Year: 2020
Subjects: Computational Biology

description: The next-generation sequencing methods assisted the scientific community in creating an enormous amount of genomic data, which is found to be very useful in terms of comparing the structural properties and pathogenicity of various bacterial strains. Tropheryma whipplei causes constitutional diseases like Gastroenteritis, Endocarditis, where aetiology directly depends significantly on genetic sequences. In this research Twist strain and TW 08/27 of T. whipplei were selected for In-silico analysis. As the chosen bacterium is fatal in live form, so to design an effective preventive vaccination, the primary target is to analyze the available Genomic sets. In this research, it has been observed the higher similarity between these two strains in their genomic sets. Intra-strand biasness at codons develops the greater expression of genes mostly due to translational selection. But strand-specific mutational stress was not highly significant at amino acid usage levels. The basic research finding in this study was to determine the preference of GC rich codons in leading strands that were expressing rapidly in comparison to lagging strand in T. whipplei. Also, the characterization of two genomes was achieved by comparing membranous genes, which is responsible for exhibiting significant diversity in strains of T.whipplei.
Effects of the interplay between interaction and disorder in bipartite entanglement
Creators: name: Santos, L. F.
name: Rigolin, G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We use a disordered anti-ferromagnetic spin-1/2 chain with anisotropic exchange coupling to model an array of interacting qubits. All qubits have the same level spacing, except two, which are called the defects of the chain. The level spacings of the defects are equal and much larger than all the others. We investigate how the entanglement between the two defects depends on the anisotropy of the system. When the anisotropy coupling is much larger than the energy difference between a defect and an ordinary qubit, the two defects become strongly entangled. Small anisotropies, on the contrary, may decrease the entanglement, which is, in this case, also much affected by the number of excitations. The analysis is made for nearest neighbor and next-nearest neighbor defects. The decrease in the entanglement for nearest neighbor defects is not very significant, especially in large chains.
description: 8 pages, 3 figures, RevTex, Published Version
A $p$-specific spectral multiplier theorem with sharp regularity bound for Grushin operators
Creators: name: Niedorf, Lars
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 43A85, 42B15 (Primary) 47F05 (Secondary)

description: In a recent work, P. Chen and E. M. Ouhabaz proved a $p$-specific $L^p$-spectral multiplier theorem for the Grushin operator acting on $\mathbb{R}^{d_1}\times\mathbb{R}^{d_2}$ which is given by \[ L =-\sum_{j=1}^{d_1} \partial_{x_j}^2 - \bigg( \sum_{j=1}^{d_1} |x_j|^2\bigg) \sum_{k=1}^{d_2}\partial_{y_k}^2. \] Their approach yields an $L^p$-spectral multiplier theorem within the range $1< p\le \min\{ \frac{2d_1}{d_1+2},\frac{2(d_2+1)}{d_2+3} \}$ under a regularity condition on the multiplier which is sharp only when $d_1\ge d_2$. In this paper, we improve on this result by proving $L^p$-boundedness under the expected sharp regularity condition $s>(d_1+d_2)(1/p-1/2)$. Our approach avoids the usage of weighted restriction type estimates which played a key role in the work of P. Chen and E. M. Ouhabaz, and is rather based on a careful analysis of the underlying sub-Riemannian geometry and restriction type estimates where the multiplier is truncated along the spectrum.
description: 19 pages; added a funding acknowledgment
Eulabidogaster setifacies
Creators: name: Schlüsslmayr, Gerhard
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Tachinidae
Eulabidogaster
Eulabidogaster setifacies

description: Eulabidogaster setifacies (RONDANI, 1861)
OÖ, Losenstein, Dandlgraben, 4.7.17.
Neu für Oberösterreich.
description: Published as part of Schlüsslmayr, Gerhard, 2018, Erstnachweise von Fliegen (Diptera) für Österreich und einige Bundesländer, pp. 765-800 in Linzer biologische Beiträge 50 (1) on page 795, DOI: 10.5281/zenodo.4004374
The stable rank of $\mathbb{Z}[x]$ is $3$
Creators: name: Guyot, Luc
Publisher: name: arXiv
Year: 2021
Subjects: subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 13D15 (Primary), 13B25 (Secondary)

description: Grunewald, Mennicke and Vaserstein proved that the Bass stable rank of $\mathbb{Z}[x]$, the ring of the univariate polynomials over $\mathbb{Z}$, is $3$. This note addresses minor errors found in their proof. Using their method, we show in addition that the unimodular row $(3, x + 1, x^2 + 16)$ is not stable.
description: 10 pages, no figure. Published in Math. Exp
APPLICATIONS OF NANO-PARTICLE ANALYSIS AND NANO-BIOCOMPOSITE FILMS: “PATHOGENIC DETECTION AND DELAYING PERISHABLE EFFECT ON MILK AND MEAT”
Creators: name: Joshi, Amit
name: Bhuwan Chandra Joshi
name: Joshi, Preeti
Publisher: name: figshare
Year: 2020
Subjects: Biotechnology

description: Applications of Nano-biotechnology assisted modern era not only in detecting pathogens but also to develop novel food packaging methodologies. In our study we investigated that Nano-particle mediated bacterial detection and Nano-Biocomposite packaging technology was successful. It was based on analyzing change in magnetic–spin relaxation time (Δt). Our investigation reveals that Mycobacterium species epitopes interacts with iron nano-particles and produces semi-dispersed state in rotten milk and meat samples that result in increase in the changes in spin-spin relaxation time (Δt) 82.36 ± 0.56, 85.24 ± 0.53. Plasma treated Zinc Oxide nanoparticles fused on Poly-hydroxy butyrate and Bacterial-cellulose produces effective biocomposite membrane for preserving milk and meat samples. Tensile strength increases by 25 % and inhibits bacterial growth of Staphylococcus by 68%.
Gonia distinguenda Herting 1963
Creators: name: Schlüsslmayr, Gerhard
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Tachinidae
Gonia
Gonia distinguenda

description: Gonia distinguenda HERTING, 1963
NÖ, Hainburg, Spitzerberg, 26.5.01, 9.4.17, 22.5.01; Bgld, Donnerskirchen, Kirchberg, 25.4.17, 2 Ex; Winden, Hackelsberg, 30.4.17 und 9.6.17, 2 Ex; Winden, Zeilerberg, 26.5.17.
Neu für Burgenland und Niederösterreich. In FRANZ (1989) noch nicht unterschieden.
description: Published as part of Schlüsslmayr, Gerhard, 2018, Erstnachweise von Fliegen (Diptera) für Österreich und einige Bundesländer, pp. 765-800 in Linzer biologische Beiträge 50 (1) on page 795, DOI: 10.5281/zenodo.4004374
Theory and experiment of entanglement in a quasi-phase-matched two-crystal source
Creators: name: Ljunggren, Daniel
name: Tengner, Maria
name: Marsden, Philip
name: Pelton, Matthew
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report new results regarding a source of polarization entangled photon-pairs created by the process of spontaneous parametric downconversion in two orthogonally oriented, periodically poled, bulk KTiOPO4 crystals (PPKTP). The source emits light colinearly at the non-degenerate wavelengths of 810 nm and 1550 nm, and is optimized for single-mode optical fiber collection and long-distance quantum communication. The configuration favors long crystals, which promote a high photon-pair production rate at a narrow bandwidth, together with a high pair-probability in fibers. The quality of entanglement is limited by chromatic dispersion, which we analyze by determining the output state. We find that such a decoherence effect is strongly material dependent, providing for long crystals an upper bound on the visibility of the coincidence fringes of 41% for KTiOPO4, and zero for LiNbO3. The best obtained raw visibility, when canceling decoherence with an extra piece of crystal, was 91 \pm 0.2%, including background counts. We confirm by a violation of the CHSH-inequality (S = 2.679 \pm 0.004 at 55 s^{-1/2} standard deviations) and by complete quantum state tomography that the fibers carry high-quality entangled pairs at a maximum rate of 55 x 10^3 s^{-1}THz^{-1}mW^{-1}.
description: 12 pages, 10 figures, REVTeX4
ExtremeBB: A Database for Large-Scale Research into Online Hate, Harassment, the Manosphere and Extremism
Creators: name: Vu, Anh V.
name: Wilson, Lydia
name: Chua, Yi Ting
name: Shumailov, Ilia
name: Anderson, Ross
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: We introduce ExtremeBB, a textual database of over 53.5M posts made by 38.5k users on 12 extremist bulletin board forums promoting online hate, harassment, the manosphere and other forms of extremism. It enables large-scale analyses of qualitative and quantitative historical trends going back two decades: measuring hate speech and toxicity; tracing the evolution of different strands of extremist ideology; tracking the relationships between online subcultures, extremist behaviours, and real-world violence; and monitoring extremist communities in near real time. This can shed light not only on the spread of problematic ideologies but also the effectiveness of interventions. ExtremeBB comes with a robust ethical data-sharing regime that allows us to share data with academics worldwide. Since 2020, access has been granted to 49 licensees in 16 research groups from 12 institutions.
Gonia divisa Meigen 1826
Creators: name: Schlüsslmayr, Gerhard
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Tachinidae
Gonia
Gonia divisa

description: Gonia divisa MEIGEN, 1826
NÖ, Hainburg, Spitzerberg, 25.3.17, 3 Ex, 31.3.17 und 9.4.17, 3 Ex.
Neu für Niederösterreich. In FRANZ (1989) nur 1 Fundangabe aus der Steiermark.
description: Published as part of Schlüsslmayr, Gerhard, 2018, Erstnachweise von Fliegen (Diptera) für Österreich und einige Bundesländer, pp. 765-800 in Linzer biologische Beiträge 50 (1) on page 795, DOI: 10.5281/zenodo.4004374
Fast Ejecta Resulted from Jet-Wind Interaction in the Great Eruption of Eta Carinae
Creators: name: Akashi, Muhammad
name: Kashi, Amit
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The accretion model for the nineteenth century Great Eruption (GE) of $η$ Carinae suggests that mass outflowing from the primary was accreted onto the secondary, and the gravitational energy of that mass accounts for the increase in luminosity and most of the kinetic energy of the ejecta. It further argues that the accretion was accompanied by the ejection of two jets that shaped the bipolar Homunculus nebula. Observations of echos from the GE found emission lines with broad wings suggesting some of the mass in equatorial directions reached more than $10\,000 \,\rm{km\,s^{-1}}$. We run hydrodynamic simulations following periastron passage during the GE, launching jets from the secondary as it accreted gas erupted from the primary. We then follow the interaction of the polar jets with the surrounding primary wind, as they accelerate part of the flow to velocities $ > 10\,000 \,\rm{km\,s^{-1}}$ and deflect it towards lower latitudes. We find that the amount of mass that reached these high velocities during the GE is $M_h \approx 0.02 \,\rm{M_{\odot}}$. This value reaches maximum and then decreases with time. Our simulations agree with previous results of the accretion model from which we estimate $M_h$ taking into account the energy budget of the GE. The accretion model can explain the observations of high velocity gas in light echos with the known two stars, and a triple star system is not required.
description: Accepted for publication in MNRAS
Hindering Adversarial Attacks with Implicit Neural Representations
Creators: name: Rusu, Andrei A.
name: Calian, Dan A.
name: Gowal, Sven
name: Hadsell, Raia
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: We introduce the Lossy Implicit Network Activation Coding (LINAC) defence, an input transformation which successfully hinders several common adversarial attacks on CIFAR-$10$ classifiers for perturbations up to $ε= 8/255$ in $L_\infty$ norm and $ε= 0.5$ in $L_2$ norm. Implicit neural representations are used to approximately encode pixel colour intensities in $2\text{D}$ images such that classifiers trained on transformed data appear to have robustness to small perturbations without adversarial training or large drops in performance. The seed of the random number generator used to initialise and train the implicit neural representation turns out to be necessary information for stronger generic attacks, suggesting its role as a private key. We devise a Parametric Bypass Approximation (PBA) attack strategy for key-based defences, which successfully invalidates an existing method in this category. Interestingly, our LINAC defence also hinders some transfer and adaptive attacks, including our novel PBA strategy. Our results emphasise the importance of a broad range of customised attacks despite apparent robustness according to standard evaluations. LINAC source code and parameters of defended classifier evaluated throughout this submission are available: https://github.com/deepmind/linac
Seismic constraints on open clusters
Creators: name: Piau, L.
name: Ballot, J.
name: Turck-Chieze, S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We derive knowledge on the global and structural parameters of low-mass stars using asteroseismology and taking advantage of the stellar collective behavior within open clusters. We build stellar models and compute the seismic signal expected from main sequence objects in the 0.8-1.6 Msun range. We first evaluate apparent magnitudes and oscillations-induced luminosity fluctuations expected in the Hyades, the Pleiades and the alpha Persei clusters. The closest cluster presents a feasible challenge to observational asteroseismology in the present and near future. We combine seismological and classical computations to address three questions: what can be inferred about 1) mass, 2) composition and 3) extension of outer convection zones of solar analogs in the Hyades. The first issue relies on the strong sensitivity of the large separation to mass. Then large separations and second differences are used to respectively constrain metal and helium fractions in the Hyades.When plotted for several masses, the relation of effective temperature vs large separation is found to be strongly dependent on the metal content. Besides this the second difference main modulation is related to the second ionization of helium.The second difference modulations are also partly due to the discontinuity in stellar stratification at the convective envelope / radiative core transition. They permit direct insight in the stellar structure. We compute acoustic radii of the convective bases for different values of the mixing length theoryparameter alpha_MLT in convection modelling, i.e. different convective efficiency in the superadiabatic layers. For a given effectivetemperature we show that the acoustic radius changes with convection efficiency.
QUANTIFYING ECONOMIC AND ENVIRONMENTAL TRADE-OFFS OF INSTREAM FLOW REQUIREMENTS: A COMPARISON BETWEEN STEWART-HAGAN AND STEWART CROP YIELD RELATIONSHIPS
Creators: name: Grove, Bennie
name: Oosthuizen, L.K.
name: Grove, Bennie
name: Oosthuizen, L.K.
Publisher: name: Unknown
Year: 1998
Subjects: Crop Production/Industries
Environmental Economics and Policy

description: Chance constrained mathematical programming was used to compare the effects of two different crop yield relationships on the economic cost to irrigation farmers while maintaining an instream flow requirement. Results showed that the Stewart-Hagan programming model underestimated the economic cost and overestimated potential return flows. Water policies based on this model will lead to the implementation of socially unacceptable water allocation policies that may even apply more pressure on stream flows. Meaningful water policies could only be advanced by a thorough understanding of the economic and hydrological consequences of alternative water allocation policies through the integration of economic and hydrological models at catchment level.
Stacking Redshifted 21cm Images of HII Regions Around High Redshift Galaxies as a Probe of Early Reionization
Creators: name: Davies, James E
name: Croft, Rupert A.
name: Di-Matteo, Tiziana
name: Greig, Bradley
name: Feng, Yu
name: Wyithe, Stuart
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A number of current and future experiments aim to detect the reionization of neutral hydrogen by the first stars and galaxies in the Universe via the redshifted 21cm line. Using the \textsc{BlueTides} simulation, we investigate the measurement of an \textit{average} ionised region towards the beginning of reionization by stacking redshifted 21cm images around optically identified bright galaxies using mock observations. We find that with an SKA 1000 hour observation, assuming perfect foreground subtraction, a $5σ$ detection of a stacked HII region can be made with 30 images around some of the brightest galaxies in \textsc{bluetides} (brighter than $M_{UV} < -22.75$) at $z=9$ (corresponding to a neutral fraction of 90.1 \% in our model). We present simulated relationships between the UV magnitude of galaxies, the sizes of the ionised regions they reside in, and the shape of the stacked profiles. These mock observations can also distinguish between scenarios where the IGM is in net emission or absorption of 21cm photons. Once 21cm foreground contamination is included, we find that even with up to 200 images around these rare, bright galaxies, only a tentative $> 1σ$ detection will be possible. However, partial foreground subtraction substantially improves signal-to-noise. For example, we predict that reducing the area of Fourier space dominated by foregrounds by 50 (80) percent will allow $> 3σ$ ($> 5σ$) detections of ionised regions at $z=9$.
description: 12 pages, 17 figures, Accepted for publication in MNRAS
ESTIMATING RELATIVE MAGNITUDES OF COMPONENTS OF FARM PRODUCTION IN SEMI-SUBSISTENCE FARMING: THE CASE OF KAVANGO
Creators: name: Low, A.
name: Kamwi, K.
name: Low, A.
name: Kamwi, K.
Publisher: name: Unknown
Year: 1998
Subjects: Farm Management

description: Output from the non-formal, traditional or semi-subsistence sector is usually estimated on the basis-marketed production only. It is therefore often underestimated in national statistics and information on the relative importance of different sources of farm-household production is either not attempted or is unreliable. This paper provides an estimation of the magnitude and relative contribution of different production and consumption components for different farm-household types in Kavango. Some of the practical and conceptual issues involved are discussed, as well as the implications of the results obtained for development planning.
Inoculation effect of rhizobium bacteria (Rhizobium trifolii) on some mineral elements content of Persian clover (Trifolium resupinatum) under the SO2 pollution
Creators: name: Bayat, Ladan
Publisher: name: figshare
Year: 2020
Subjects: subject: Plant Biology
subject: FOS: Biological sciences
subject: 60705 Plant Physiology

description: High concentrations of SO2 (1, 1, 1.5 and 2 ppm) significantly reduced the potassium and phosphorus amounts but in 0.5 ppm, significantly increase in these elements were observed as compared with control plants. Inoculation of this plant with rhizobium alleviated the negative effects of high concentrations of SO2 on amount of this elements