cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Unifying frequency combs in active and passive cavities: Temporal solitons in externally-driven ring lasers
Creators: name: Columbo, L.
name: Piccardo, M.
name: Prati, F.
name: Lugiato, L. A.
name: Brambilla, M.
name: Gatti, A.
name: Silvestri, C.
name: Gioannini, M.
name: Opacak, N.
name: Schwarz, B.
name: Capasso, F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Frequency combs have become a prominent research area in optics. Of particular interest as integrated comb technology are chip-scale sources, such as semiconductor lasers and microresonators, which consist of resonators embedding a nonlinear medium either with or without population inversion. Such active and passive cavities were so far treated distinctly. Here we propose a formal unification by introducing a general equation that describes both types of cavities. The equation also captures the physics of a hybrid device - a semiconductor ring laser with an external optical drive - in which we show the existence of temporal solitons, previously identified only in microresonators, thanks to symmetry breaking and self-localization phenomena typical of spatially-extended dissipative systems.
Random Feynman Graphs
Creators: name: Soderberg, Bo
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We investigate a class of random graph ensembles based on the Feynman graphs of multidimensional integrals, representing statistical-mechanical partition functions. We show that the resulting ensembles of random graphs strongly resemble those defined in random graphs with hidden color (CDRG), generalizing the known relation of the Feynman graphs of simple one-dimensional integrals to random graphs with a given degree distribution.
description: 13 pages (to appear in proc. CNET2004)
H I absorption towards radio Active Galactic Nuclei of different accretion modes
Creators: name: Chandola, Yogesh
name: Saikia, D. J.
name: Li, Di
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present results of H I absorption experiment done using the Giant Metrewave Radio Telescope (GMRT) towards 27 low- and intermediate-luminosity ($P_{\rm 1.4 GHz}$ $\sim$10$^{23}$-10$^{26}$ W Hz$^{-1}$) radio active galactic nuclei (AGN), classified as either low excitation radio galaxies (LERGs) or high excitation radio galaxies (HERGs) and with WISE colour W2[4.6 $μ$m]$-$W3[12 $μ$m]$>$ 2. We report H I absorption detection towards seven radio AGNs, six of which are new. Combined with other sources from literature classified as LERGs or HERGs, we confirm our earlier result that compact radio AGNs with WISE colour W2$-$W3 $>$2 have higher detection rates compared to those with W2$-$W3 $$2, we don't find any significant difference in detection rates of two types of AGNs implying detection of H I gas may not necessarily mean high excitation mode AGN. We further analysed the kinematics towards these sources. We find that while LERGs show a wide range in the shift of centroid velocities ($\sim$ $-$479 to $+$356 km s$^{-1}$) relative to the optical systemic velocity, most of the HERGs have centroid velocity shift less than 200 km s$^{-1}$, possibly due to differences in jet-interstellar medium interaction.
description: 19 (16+3) pages, 9 figures, accepted for publication in MNRAS
New R-matrices from Representations of Braid-Monoid Algebras based on Superalgebras
Creators: name: Galleas, W.
name: Martins, M. J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: In this paper we discuss representations of the Birman-Wenzl-Murakami algebra as well as of its dilute extension containing several free parameters. These representations are based on superalgebras and their baxterizations permit us to derive novel trigonometric solutions of the graded Yang-Baxter equation. In this way we obtain the multiparametric $R$-matrices associated to the $U_q[sl(r|2m)^{(2)}]$, $U_q[osp(r|2m)^{(1)}]$ and $U_q[osp(r=2n|2m)^{(2)}]$ quantum symmetries. Two other families of multiparametric $R$-matrices not predicted before within the context of quantum superalgebras are also presented. The latter systems are indeed non-trivial generalizations of the $U_q[D^{(2)}_{n+1}]$ vertex model when both distinct edge variables statistics and extra free-parameters are admissible.
description: 26 pages
UV emission and Star Formation in Stephan's Quintet
Creators: name: Xu, C. Kevin
name: Iglesias-Paramo, Jorge
name: Burgarella, Denis
name: Rich, R. Michael
name: Neff, Susan G.
name: Lauger, Sebastien
name: Barlow, Tom A.
name: Bianchi, Luciana
name: Byun, Yong-Ik
name: Forster, Karl
name: Friedman, Peter G.
name: Heckman, Timothy M.
name: Jelinsky, Patrick N.
name: Lee, Young-Wook
name: Madore, Barry F.
name: Malina, Roger F.
name: Martin, D. Christopher
name: Milliard, Bruno
name: Morrissey, Patrick
name: Schiminovich, David
name: Siegmund, Oswald H. W.
name: Small, Todd
name: Szalay, Alex S.
name: Welsh, Barry Y.
name: Wyder, Ted K.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: we present the first GALEX UV images of the well known interacting group of galaxies, Stephan's Quintet (SQ). We detect widespread UV emission throughout the group. However, there is no consistent coincidence between UV structure and emission in the optical, Hα, or HI. Excluding the foreground galaxy NGC7320 (Sd), most of the UV emission is found in regions associated with the two spiral members of the group, NGC7319 and NGC7318b, and the intragroup medium starburst SQ-A. The extinction corrected UV data are analyzed to investigate the overall star formation activity in SQ. It is found that the total star formation rate (SFR) of SQ is 6.69+-0.65 M_\sun/yr. Among this, 1.34+-0.16 M_sun/yr is due to SQ-A. This is in excellent agreement with that derived from extinction corrected Hαluminosity of SQ-A. The SFR in regions related to NGC 7319 is 1.98+-0.58 M_\sun/yr, most of which(68%) is contributed by the disk. The contribution from the 'young tail' is only 15%. In the UV, the 'young tail' is more extended (~100 kpc) and shows a loop-like structure, including the optical tail, the extragalactic HII regions recently discovered in Hα, and other UV emission regions discovered for the first time. The UV and optical colors of the 'old tail' are consistent with a single stellar population of age t ~10^{8.5+-0.4} yrs. The UV emission associated with NGC 7318b is found in a very large (~80 kpc) disk, with a net SFR of 3.37+-0.25 M_sun/yr. Several large UV emission regions are 30 -- 40 kpc away from the nucleus of NGC7318b. Although both NGC7319 and NGC7318b show peculiar UV morphology, their SFR is consistent with that of normal Sbc galaxies, indicating that the strength of star formation activity is not enhenced by interactions.
description: This paper will be published as part of the Galaxy Evolution Explorer(GALEX) Astrophysical Journal Letters Special Issue. Links to the full set of papers will be available at http:/www.galex.caltech.edu/PUBLICATIONS/ after November 22, 2004
Spin-Dynamics in the Carrier-Doped $S=1/2$ Triangular-Lattice of Na$_{x}$CoO$_{2}$-yH$_{2}$O
Creators: name: Ning, F. L.
name: Imai, T.
name: Statt, B. W.
name: Chou, F. C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We probed the local electronic properties of the mixed-valent Co(+4-x) triangular-lattice in Na{x}CoO{2}-yH{2}O by 59-Co NMR. We observed two distinct types of Co sites for x>=1/2, but the valence seems averaged out for x~1/3. Local spin fluctuations exhibit qualitatively the same trend down to ~100 K regardless of the carrier-concentration x, and hence the nature of the electronic ground state. A canonical Fermi-liquid behavior emerges below ~100 K only for x~1/3.
description: 4 figures. Submitted to PRL on May 13, 2004
Additional file 1 of Identification of glucocorticoid receptor in Drosophila melanogaster
Creators: name: Bartolo, Gloria
name: Gonzalez, Leandra O.
name: Alameh, Saleem
name: C. Alexander Valencia
name: Shilman, Mikhail Martchenko
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1. The amino acid sequence similarity between DNA and ligand binding domains of dmERR with hsERR1, hsER1, and hsGR. The amino acid sequences of DNA binding domain (DBD) and ligand binding domain (LBD) are compared between dmERR, hsERR1, hsER1, and hsGR. The extent (%) of the identity/similarity is shown for each domain.
Magnetic moments of the pentaquarks
Creators: name: Kim, Hyun-Chul
name: Yang, Ghil-Seok
name: Praszalowicz, Michal
name: Goeke, Klaus
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present in this talk a recent analysis for the magnetic moments of the baryon antidecuplet within the framework of the chiral quark-soliton model with linear $m_s$ corrections considered. We take into account the mixing of higher representations to the collective magnetic moment operator, which comes from the SU(3) symmetry breaking. Dynamical parameters of the model are fixed by experimental data for the magnetic moments of the baryon octet as well as by the masses of the octet, decuplet and of $Θ^{+}$. The magnetic moment of $Θ^{+}$ is rather sensitive to the pion-nucleon sigma term and ranges from $-1.19 {\rm n.m.}$ to $-0.33 {\rm n.m.}$ as the sigma term is varied from $Σ_{πN} = 45$ to 75 MeV, respectively. On top of them, we obtained that the strange magnetic moment of the nucleon has the value of $μ^{(s)}_N =+0.39$ n.m. within this scheme and turns out to be almost independent of the sigma term.
description: 7 pages, 1 figure, A talk given at International Workshop on PENTAQUARK04, SPring-8, Hyogo, Japan, 20-23 Jul 2004
Additional file 2 of Identification of glucocorticoid receptor in Drosophila melanogaster
Creators: name: Bartolo, Gloria
name: Gonzalez, Leandra O.
name: Alameh, Saleem
name: C. Alexander Valencia
name: Shilman, Mikhail Martchenko
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2. Sensitivity of male wildtype flies to Saccharomyces cerevisiae infection. Male Oregon-R wild type (WT) flies were orally challenged with different amounts of S. cerevisiae. Flies were fed in vials with 50 mM sucrose solution containing various yeast concentrations. Each condition contains ten flies. Vials are incubated at 30 °C and checked a minimum of twice per day for fly survival.
Group Bargaining and Conflict
Creators: name: Querou, Nicolas
name: Querou, Nicolas
Publisher: name: Unknown
Year: 2010
Subjects: subject: Environmental Economics and Policy
subject: Bargaining
subject: Conflict
subject: Agency Problem

description: We consider a situation where groups negotiate over the allocation of a surplus (which is used to fund group specific goods). Each group is composed of agents who have differing valuations for public goods. Members choose a representative to take decisions on their behalf. Specifically, representatives can decide to enter either a (cooperative) negotiation protocol or a conflict to appropriate the surplus. In the cooperative negotiations, disagreement corresponds to a pro rata allocation (as a function of the size of the groups). We analyse the conditions (on the internal composition of the groups) under which conflict will be preferred to negotiated agreements (and vice versa), and we derive welfare implications. Finally, we provide results of comparative statics that highlight the influence of changes in the internal composition of groups and in their relative size on the profitability of negotiated agreements.
Monopole decay in the external electric field
Creators: name: Monin, A. K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The possibility of the magnetic monopole decay in the constant electric field is investigated and the exponential factor in the probability is obtained. Corrections due to Coulomb interaction are calculated. The relation between masses of particles for the process to exist is obtained.
description: 13 pages, 8 figures
Diffusion of Innovations on Community Based Small Worlds: the Role of Correlation between Social Spheres
Creators: name: Tanimura, Emily
name: Tanimura, Emily
Publisher: name: Unknown
Year: 2010
Subjects: subject: Environmental Economics and Policy
subject: Diffusion of innovations
subject: Small World Networks
subject: Contagion Threshold
subject: Community Structure
subject: Social Networks

description: Which types of networks favor the diffusion of innovations in the sense that an innovation whose intrinsic benefits are greater than those of an established choice will be able to replace the latter when it is initially used only by a small fraction of a large population? For deterministic and regular networks there are characterizations, based on a coordination game model of the diffusion of innovations. Here we study this question for a class of irregular random networks, Small world networks, which are of interest as more realistic models of social networks. We consider a random graph model based on a community structure, in which the choice of a parameter allows us to obtain as special cases several well known models, in particular Watts' Small world. We show that there are different types of Small World graphs some which favor diffusion, others that do not. Our study suggests that the kinds of ties that exist between different communities of an individual play an important role. We interpret Watts' Small World as one with high correlation between social spheres of individuals and favorable to diffusion. In other Small Worlds where the communities of individuals are uncorrelated diffusion succeeds only for very large payoff benefits in favor of the innovation.
Non-convergence of stochastic gradient descent in the training of deep neural networks
Creators: name: Cheridito, Patrick
name: Jentzen, Arnulf
name: Rossmannek, Florian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Numerical Analysis (math.NA)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: I.2.6
subject: 68T07 (Primary) 65D15 (Secondary)

description: Deep neural networks have successfully been trained in various application areas with stochastic gradient descent. However, there exists no rigorous mathematical explanation why this works so well. The training of neural networks with stochastic gradient descent has four different discretization parameters: (i) the network architecture; (ii) the amount of training data; (iii) the number of gradient steps; and (iv) the number of randomly initialized gradient trajectories. While it can be shown that the approximation error converges to zero if all four parameters are sent to infinity in the right order, we demonstrate in this paper that stochastic gradient descent fails to converge for ReLU networks if their depth is much larger than their width and the number of random initializations does not increase to infinity fast enough.
The chiral Hall effect in canted ferromagnets and antiferromagnets
Creators: name: Kipp, J.
name: Samanta, K.
name: Lux, F. R.
name: Merte, M.
name: Hanke, J. -P.
name: Redies, M.
name: Freimuth, F.
name: Blügel, S.
name: Ležaić, M.
name: Mokrousov, Y.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The anomalous Hall effect has been indispensable in our understanding of numerous magnetic phenomena. This concerns both ferromagnetic materials, as well as diverse classes of antiferromagnets, where in addition to the anomalous and crystal Hall effects, the topological Hall effect in non-coplanar antiferromagnets has been a subject of intensive research in the past decades. Here, we uncover a new flavour of the anomalous Hall effect in canted spin systems. Using advanced theoretical tools we demonstrate that upon canting, the anomalous Hall effect acquires a contribution which is sensitive to the sense of imprinted vector chirality among spins. We explore the origins and basic properties of corresponding chiral Hall effect, and closely tie it to the symmetry properties of the system. Our findings suggest that the chiral Hall effect and corresponding chiral magneto-optical effects emerge as novel versatile tools in characterizing an interplay of structure and chirality in complex magnets, as well as in tracking their chiral dynamics and fluctuations.
description: To appear in Communications Physics (2021)
The Survival of the Conformist: Social Pressure and Renewable Resource Management
Creators: name: Tavoni, Alessandro
name: Schluter, Maja
name: Levin, Simon
name: Tavoni, Alessandro
name: Schluter, Maja
name: Levin, Simon
Publisher: name: Unknown
Year: 2010
Subjects: subject: Environmental Economics and Policy
subject: Cooperation
subject: Social Norm
subject: Ostracism
subject: Common Pool Resource
subject: Evolutionary Game Theory
subject: Replicator Equation
subject: Agent-based Simulation
subject: Coupled Socio-resource Dynamics

description: This paper examines the role of pro-social behavior as a mechanism for the establishment and maintenance of cooperation in resource use under variable social and environmental conditions. By coupling resource stock dynamics with social dynamics concerning compliance to a social norm prescribing non-excessive resource extraction in a common pool resource (CPR), we show that when reputational considerations matter and a sufficient level of social stigma affects the violators of a norm, sustainable outcomes are achieved. We find large parameter regions where norm-observing and norm-violating types coexist, and analyze to what extent such coexistence depends on the environment.
Scintillation in the Circinus Galaxy water megamasers
Creators: name: McCallum, J. N.
name: Ellingsen, S. P.
name: Jauncey, D. L.
name: Lovell, J. E. J.
name: Greenhill, L. J.
name: .
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present observations of the 22 GHz water vapor megamasers in the Circinus galaxy made with the Tidbinbilla 70m telescope. These observations confirm the rapid variability seen earlier by Greenhill et al (1997). We show that this rapid variability can be explained by interstellar scintillation, based on what is now known of the interstellar scintillation seen in a significant number of flat spectrum AGN. The observed variability cannot be fully described by a simple model of either weak or diffractive scintillation.
description: 10 pages, 5 figures. AJ accepted
Information, Stability and Dynamics in Networks under Institutional Constraints
Creators: name: Olaizola, Norma
name: Valenciano, Federico
name: Olaizola, Norma
name: Valenciano, Federico
Publisher: name: Unknown
Year: 2010
Subjects: subject: Environmental Economics and Policy
subject: Network
subject: Non-cooperative Game
subject: Dynamics

description: In this paper we study the effects of institutional constraints on stability, efficiency and network formation. More precisely, an exogenous "societal cover" consisting of a collection of possibly overlapping subsets that covers the whole set of players and such that no set in this collection is contained in another specifies the social organization in different groups or "societies". It is assumed that a player may initiate links only with players that belong to at least one society that s/he also belongs to, thus restricting the feasible strategies and networks. In this way only the players in the possibly empty "societal core", i.e., those that belong to all societies, may initiate links with all individuals. In this setting the part of the current network within each connected component of the cover is assumed to be common knowledge to all players in that component. Based on this two-ingredient model, network and societal cover, we examine the impact of societal constraints on stable/efficient architectures and on dynamics.
Crime and Education in a Model of Information Transmission
Creators: name: Cortes, Darwin
name: Friebel, Guido
name: Maldonado, Dario
name: Cortes, Darwin
name: Friebel, Guido
name: Maldonado, Dario
Publisher: name: Unknown
Year: 2010
Subjects: subject: Labor and Human Capital
subject: Human Capital
subject: The Economics of Rumors
subject: Social Interactions
subject: Urban Economics

description: We model the decisions of young individuals to stay in school or drop-out and engage in criminal activities. We build on the literature on human capital and crime engagement and use the framework of Banerjee (1993) that assumes that the information needed to engage in crime arrives in the form of a rumor and that individuals update their beliefs about the profitability of crime relative to education. These assumptions allow us to study the effect of social interactions on crime. We first show that a society with fully rational students is less vulnerable to crime than an otherwise identical society with boundedly rational students. We also investigate the spillovers from the actions of talented students to less talented students and show that policies that decrease the cost of education for talented students may increase the vulnerability of less talented students to crime. This is always the case when the heterogeneity of students with respect to talent is sufficiently small.
Observing the spin-Coulomb drag in spin-valve devices
Creators: name: Vignale, G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The Coulomb interaction between electrons of opposite spin orientations in a metal or in a doped semiconductor results in a negative off-diagonal component of the electrical resistivity matrix -- the so-called "spin-drag resistivity". It is generally quite difficult to separate the spin-drag contribution from more conventional mechanisms of resistivity. In this paper I discuss two methods to accomplish this separation in a spin-valve device.
description: 11 pages, 5 figures
Proxy-based adaptive push-pull web caching
Creators: name: Gao, Mulong
Publisher: name: University of British Columbia
Year: 2009

description: Although the volume of Web traffic on the Internet is staggering, a large percentage of the traffic is redundant — multiple users at any given site request much of the same content. This means that a significant percentage of the W A N infrastructure carries identical content (and identical requests for it) day after day. Web caching performs the local storage of Web content to serve these redundant user requests more quickly, without sending the requests and the resulting content over the WAN. There are two major categories of Web caching mechanisms: client pull and origin server or parent proxy push. This thesis investigates a proxy-based, adaptive push-pull mechanism to enhance user experience by selecting some of the most frequently accessed objects to push to a proxy instead of letting the proxy request it later. Web servers or parent proxies collect the objects access frequency for specific proxies rather than on a global scope. Web servers or parent proxies adopt a push policy to distribute hot objects to cooperating proxies; other objects are pulled by the proxies as usual. As time moves, frequently requested objects may become cold in one region and become hot in another region; Web servers and caching proxies can thus learn the change pattern and adjust their distribution policy accordingly, avoiding pushing objects to proxies which may not request those objects in the near future. By using the adaptive push-pull distribution mechanism, the most frequently updated and accessed objects, which form the major chunk of Internet traffic, are pushed to proxies, saving many If-Modified-Since GET requests. Hence, Web traffic is more productive and user perceived latency is reduced.
Social Media Authentication and Combating Deepfakes using Semi-fragile Invisible Image Watermarking
Creators: name: Nadimpalli, Aakash Varma
name: Rattani, Ajita
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: With the significant advances in deep generative models for image and video synthesis, Deepfakes and manipulated media have raised severe societal concerns. Conventional machine learning classifiers for deepfake detection often fail to cope with evolving deepfake generation technology and are susceptible to adversarial attacks. Alternatively, invisible image watermarking is being researched as a proactive defense technique that allows media authentication by verifying an invisible secret message embedded in the image pixels. A handful of invisible image watermarking techniques introduced for media authentication have proven vulnerable to basic image processing operations and watermark removal attacks. In response, we have proposed a semi-fragile image watermarking technique that embeds an invisible secret message into real images for media authentication. Our proposed watermarking framework is designed to be fragile to facial manipulations or tampering while being robust to benign image-processing operations and watermark removal attacks. This is facilitated through a unique architecture of our proposed technique consisting of critic and adversarial networks that enforce high image quality and resiliency to watermark removal efforts, respectively, along with the backbone encoder-decoder and the discriminator networks. Thorough experimental investigations on SOTA facial Deepfake datasets demonstrate that our proposed model can embed a $64$-bit secret as an imperceptible image watermark that can be recovered with a high-bit recovery accuracy when benign image processing operations are applied while being non-recoverable when unseen Deepfake manipulations are applied. In addition, our proposed watermarking technique demonstrates high resilience to several white-box and black-box watermark removal attacks. Thus, obtaining state-of-the-art performance.
description: ACM Transactions (Digital Threats: Research and Practice)
Chemo-dynamical abundance analysis of the very metal-poor halo star HE 2315-4240
Creators: name: Wang, Xinuo
Publisher: name: arXiv
Year: 2024
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Learning about the chemical evolution of the universe is crucial to understanding the formation of the first stars and structure formation in the early universe. To find out how elements are produced via nucleosynthesis and how their relative amounts have evolved with time, abundance trends of stars with different metallicities can be established and compared. In this study, we present a spectrum of a very metal-poor star, HE 2315$-$4240, with [Fe/H] = $-$2.89 based on a Magellan/MIKE high-resolution visual light spectrum. The star has a radial velocity of +41.9 km s$^{-1}$, an effective temperature of 5181 K, a surface gravity of 2.24 dex, and a microturbulence of 1.61 km s$^{-1}$. The $α$-elements and the iron peak elements agree well with the abundance trend. The low abundance of [Sr/Ba] and [C/Fe] suggests that HE 2315$-$4240 is accreted and formed in a dwarf galaxy. The value of [Ba/Eu] suggests the operation of a limited r-process. The abundance pattern of [Mg/Fe] and [Si/Fe] in HE 2315$-$4240 and its metallicity indicated that the star is formed from the gas enriched by a Type II supernova of a massive Pop III star. The abundance pattern fits Population III supernova yields moderately. The star's kinematic behavior shows that the star has a retrograde orbit and is moving away from the galactic center and out of the galactic disk to the south, and although the star is located in the halo of the Milky Way, it didn't form in the Milky Way but was rather formed in a small dwarf galaxy that was later absorbed by the Milky Way.
description: Paper withdrawn due to fundamental flaws in the methodology in analyzing chemical abundances that invalidate the conclusions
Decoherence Rates in Large Scale Quantum Computers and Macroscopic Systems
Creators: name: Dalton, B J
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Markovian regime decoherence effects in quantum computers are studied in terms of the fidelity for the situation where the number of qubits N becomes large. A general expression giving the decoherence time scale in terms of Markovian relaxation elements and expectation values of products of system fluctuation operators is obtained, which could also be applied to study decoherence in other macroscopic systems such as Bose condensates and superconductors. A standard circuit model quantum computer involving three-state lambda system ionic qubits is considered, with qubits localised around well-separated positions via trapping potentials. The centre of mass vibrations of the qubits act as a reservoir. Coherent one and two qubit gating processes are controlled by time dependent localised classical electromagnetic fields that address specific qubits, the two qubit gating processes being facilitated by a cavity mode ancilla, which permits state interchange between qubits. With a suitable choice of parameters, it is found that the decoherence time can be made essentially independent of N.
description: Minor revisions. To be published in J Mod Opt. One figure
Additional file 2 of Implementation of the clinical practice guideline for individuals with amputations in Colombia: a qualitative study on perceived barriers and facilitators
Creators: name: Patiño-Lugo, Daniel F.
name: María Del Pilar Pastor Durango
name: Lugo-Agudelo, Luz Helena
name: Borrero, Ana María Posada
name: Correa, Verónica Ciro
name: Contreras, Jesús Alberto Plata
name: Giraldo, Claudia Yaneth Vera
name: Aguirre-Acevedo, Daniel Camilo
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 2. Additional quotes.
Cash flow as an important solvency determinant of agricultural enterprises in the Slovak Republic
Creators: name: Gurcik, Lubomir
name: Miklovicova, Jana
name: Miklovicova, Silvia
name: Gurcik, Lubomir
name: Miklovicova, Jana
name: Miklovicova, Silvia
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: Agricultural enterprises
subject: cash flow analysis
subject: net cash flow
subject: balance composition of cash flow

description: In this paper deals with the cash flow analysis in agricultural companies in particular regions of the Slovak Republic. At present, from a company’s point of view it is not so important to reach a profit but to have a sufficient cash to keep solvency. On base of column and balance cash flow composition we determine in which areas agricultural companies invested money and what sources they used to finance their activities. Agricultural companies in the Slovak Republic financed their activities particularly from internal sources, however, they used external sources, too. Companies situated in better natural conditions spent more external sources than companies in LFA. The companies used the financial sources in operating and investment activities equally.
Comparison of milk production costs among EU members
Creators: name: Mach, Jiri
name: Rezbova, Helena
name: Mach, Jiri
name: Rezbova, Helena
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: Financial Economics
subject: Milk production
subject: costs
subject: profitability
subject: production factors

description: This paper attempts to identify factors which influence the effectiveness of milk production. The basic aim is to compare levels of costs in the dairy industry between Czech and European producers. The average cost per 100 kg ECM milk is determined from data provided by the European Dairy Farmers association (EDF). The total costs per 1 litre of Czech milk producers are on the European average level with high production efficiency. The problem is only in the utilisation of basic production factors, especially land and labour.
Additional file 3 of Efficacy, safety, and economic assessment of hominis placental pharmacopuncture for chronic temporomandibular disorder: a protocol for a multicentre randomised controlled trial
Creators: name: Jongho Kim
name: Park, Kyoung Sun
name: Lee, Yoon Jae
name: Koh-Woon Kim
name: Jae-Heung Cho
name: In-Hyuk Ha
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Neuroscience
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases

description: Additional file 3. Trial committee organisation and roles.
The influence of official development assistance on economical development of the selected groups of developing countries around the world
Creators: name: Pokorna, Irena
name: Smutka, Lubos
name: Pokorna, Irena
name: Smutka, Lubos
Publisher: name: Unknown
Year: 2009
Subjects: subject: Political Economy
subject: Aid
subject: development assistance
subject: economic growth
subject: developing countries

description: The current financial crisis influenced the whole economy around the world. Almost all sectors of human activities and all countries are affected by its impacts. While in the past all kinds of crises had an effect on developing countries and in case of developed countries only selected sectors of the national economy were involved, the current crisis, which started in the second half of 2008, seriously affected not only developing countries but also developed countries. During the last several decades, we became witnesses of a permanently increasing gap between developing and developed countries. While only few developed countries with about 1.2 billion people produced about 80 % of the world GDP, the rest of the world represented by developing countries with about 5.8 billion people produced only 20 % of the world GDP. Many different ideas were proposed to improve the situation in case of developing countries and to eliminate the gap between the rich “North” and the poor “South”. All initiatives are based on a cooperation between developed and developing countries. This cooperation is based not only on the economical and political cooperation, but also on a very intensive developing aid provided by developed countries and international institutions. The aid is offered in many forms (financial, food or development aid). The main aim of our paper is to evaluate the value and flows of possible forms of aid which were offered to developing countries in the period before the financial crisis and the next step is to estimate how the current financial crisis affects developing aid flows.
The CKM matrix and CP Violation
Creators: name: Ligeti, Zoltan
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The status of CP violation and the CKM matrix is reviewed. Direct CP violation in B decay has been established and the measurement of sin(2beta) in ψK modes reached 5% accuracy. I discuss the implications of these, and of the possible deviations of the CP asymmetries in b->s modes from that in ψK. The first meaningful measurements of alpha and gamma are explained, together with their significance for constraining both the SM and new physics in B-Bbar mixing. I also discuss implications of recent developments in the theory of nonleptonic decays for B->pi K rates and CP asymmetries, and for the polarization in charmless B decays to two vector mesons.
description: Plenary talk at 32nd International Conference on High Energy Physics (ICHEP'04), August 16-22, 2004, Beijing, China. v2: Table 5 corrected, minor changes in some averages (updated to hfag, that include correlations between S and C). v3: Figure 8 fixed, minor final changes
Additional file 2 of Efficacy, safety, and economic assessment of hominis placental pharmacopuncture for chronic temporomandibular disorder: a protocol for a multicentre randomised controlled trial
Creators: name: Jongho Kim
name: Park, Kyoung Sun
name: Lee, Yoon Jae
name: Koh-Woon Kim
name: Jae-Heung Cho
name: In-Hyuk Ha
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Neuroscience
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases

description: Additional file 2. Acupoint locations and standards used for locating acupoints used in this trial.
Determination of magnetic field strength on the event horizon of supermassive black holes in active galactic nuclei
Creators: name: Piotrovich, M. Yu.
name: Mikhailov, A. G.
name: Buliga, S. D.
name: Natsvlishvili, T. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We estimated the magnetic field strength at the event horizon for a sample of supermassive black holes (SMBHs) in active galactic nuclei (AGNs). Our estimates were made using the values of the inclination angles of the accretion disk to the line of sight, that we obtained previously from spectropolarimetric observations in the visible spectrum. We also used published values of full width at half maximum (FWHM) of spectral line $H_β$ from broad line region, masses of SMBHs and luminosity of AGNs at 5100 angstrom. In addition we used literature data on the spins of SMBHs obtained from their X-ray spectra. Our estimates showed that the magnetic field strength at the event horizon of the majority of SMBHs in AGNs ranges from several to tens of kG and have mean values of about $10^4$G. At the same time, for individual objects, the fields are significantly larger - of the order of hundreds kG or even 1 MG.
description: 8 pages, 8 figures
Weak corrections and high $E_T$ jets at Tevatron
Creators: name: Moretti, S.
name: Nolten, M. R.
name: Ross, D. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate one-loop (purely) Weak (W) corrections of ${\cal O}(α_{\mathrm{S}}^2α_{\mathrm{W}})$ to the partonic cross section of two jets at Tevatron and prove that they can be larger than the tree-level ${\cal O}(α_{\mathrm{S}}α_{\mathrm{EW}})$ and ${\cal O}(α_{\mathrm{EW}}^2)$ Electro-Weak (EW) ones. At high transverse energy of the jets, all such corrections may lead to detectable effects of, e.g., -10% or so, with respect to the leading-order (LO) QCD term of ${\cal O}(α_{\mathrm{S}}^2)$, for the highest value so far probed by Run 2, depending on the factorisation/renormalisation scale. Besides, they increase significantly with jet transverse energy. Hence, our results show that EW corrections may be needed to fit the Standard Model (SM) to present and future Tevatron jet data.
description: 4 pages, 4 figures, no significant changes from v2, version to appear in PRD
Quantifying multifractal anisotropy in two dimensional objects
Creators: name: Rak, Rafał
name: Drożdż, Stanisław
name: Kwapień, Jarosław
name: Oświęcimka, Paweł
Publisher: name: arXiv
Year: 2024
Subjects: subject: Applied Physics (physics.app-ph)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: An efficient method of exploring the effects of anisotropy in the fractal properties of 2D surfaces and images is proposed. It can be viewed as a direction-sensitive generalization of the multifractal detrended fluctuation analysis (MFDFA) into 2D. It is tested on synthetic structures to ensure its effectiveness, with results indicating consistency. The interdisciplinary potential of this method in describing real surfaces and images is demonstrated, revealing previously unknown directional multifractality in data sets from the Martian surface and the Crab Nebula. The multifractal characteristics of Jackson Pollock's paintings are also analyzed. The results point to their evolution over the time of creation of these works.
description: 20 pages, 7 figures
Rotation velocities of white dwarfs determined from the CaII K line
Creators: name: Berger, L.
name: Koester, D.
name: Napiwotzki, R.
name: Reid, I. N.
name: Zuckerman, B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We determine projected rotation velocities v sini in DAZ white dwarfs, for the first time using the rotational broadening of the CaII K line. The results confirm previous findings that white dwarfs are very slow rotators, and set even more stringent upper limits of typically less than 10 km/s. The few exceptions include 3 stars known or suspected to be variable ZZ Ceti stars, where the line broadening is very likely not due to rotation. The results demonstrate that the angular momentum of the core cannot be preserved completely between main sequence and final stage.
description: 7 pages, 3 figures, 3 tables
DeepSampling: Selectivity Estimation with Predicted Error and Response Time
Creators: name: Vu, Tin
name: Eldawy, Ahmed
Publisher: name: arXiv
Year: 2020
Subjects: subject: Databases (cs.DB)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The rapid growth of spatial data urges the research community to find efficient processing techniques for interactive queries on large volumes of data. Approximate Query Processing (AQP) is the most prominent technique that can provide real-time answer for ad-hoc queries based on a random sample. Unfortunately, existing AQP methods provide an answer without providing any accuracy metrics due to the complex relationship between the sample size, the query parameters, the data distribution, and the result accuracy. This paper proposes DeepSampling, a deep-learning-based model that predicts the accuracy of a sample-based AQP algorithm, specially selectivity estimation, given the sample size, the input distribution, and query parameters. The model can also be reversed to measure the sample size that would produce a desired accuracy. DeepSampling is the first system that provides a reliable tool for existing spatial databases to control the accuracy of AQP.
description: 9 pages, published in DeepSpatial 2020
Limiting Behaviour of the Mean Residual Life
Creators: name: Bradley, David M.
name: Gupta, Ramesh C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: In survival or reliability studies, the mean residual life or life expectancy is an important characteristic of the model. Here, we study the limiting behaviour of the mean residual life, and derive an asymptotic expansion which can be used to obtain a good approximation for large values of the time variable. The asymptotic expansion is valid for a quite general class of failure rate distributions--perhaps the largest class that can be expected given that the terms depend only on the failure rate and its derivatives.
description: 19 pages
Möglichkeiten zur Umsetzung integrierter Fördermaßnahmen an der Schnittstelle Landwirtschaft, Umwelt, Ländliche Entwicklung im Rahmen der Verordnung (EG) Nr. 1257/99
Creators: name: Knickel, Karlheinz
name: Knickel, Karlheinz
Publisher: name: Unknown
Year: 2001
Subjects: subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Environmental Economics and Policy
subject: Agriculture
subject: environment
subject: rural development
subject: EC Regulation 1257/99
subject: rural development programmes
subject: agricultural policy
subject: multifunctional agriculture
subject: value added
subject: employment

description: EC Regulation 1257/99 of 17 May 1999 underlines the intention of the European Commission of an integrated rural development policy. In this paper the chances are examined that this new policy orientation offers for a more multifunctional agriculture. Possibilities for the implementation of integrated support measures at the interface of agriculture, environment and rural development are presented. First, functional relationships between agriculture and rural development are explored on the basis of three examples. This is followed by a more analytical section on relevant experiences, data and concepts. The significance of 'new', agriculture-related activities in rural areas is underlined. A paradigm shift from volumes and costs of production towards quality and value added is demanded. The paper concludes with a discussion of the perspectives for a multifunctional agriculture and a plead for rural development measures that are in support of this reorientation.
4chan & 8chan embeddings
Creators: name: Voué, Pierre
name: De Smedt, Tom
name: De Pauw, Guy
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: We have collected over 30M messages from the publicly available /pol/ message boards on 4chan and 8chan, and compiled them into a model of toxic language use. The trained word embeddings (0.4GB) are released for free and may be useful for further study on toxic discourse or to boost hate speech detection systems: https://textgain.com/8chan.
description: 4 pages