cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Electron Scattering From High-Momentum Neutrons in Deuterium
Creators: name: Klimenko, A. V.
name: Kuhn, S. E.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We report results from an experiment measuring the semi-inclusive reaction $d(e,e'p_s)$ where the proton $p_s$ is moving at a large angle relative to the momentum transfer. If we assume that the proton was a spectator to the reaction taking place on the neutron in deuterium, the initial state of that neutron can be inferred. This method, known as spectator tagging, can be used to study electron scattering from high-momentum (off-shell) neutrons in deuterium. The data were taken with a 5.765 GeV electron beam on a deuterium target in Jefferson Laboratory's Hall B, using the CLAS detector. A reduced cross section was extracted for different values of final-state missing mass $W^{*}$, backward proton momentum $\vec{p}_{s}$ and momentum transfer $Q^{2}$. The data are compared to a simple PWIA spectator model. A strong enhancement in the data observed at transverse kinematics is not reproduced by the PWIA model. This enhancement can likely be associated with the contribution of final state interactions (FSI) that were not incorporated into the model. A ``bound neutron structure function'' $F_{2n}^{eff}$ was extracted as a function of $W^{*}$ and the scaling variable $x^{*}$ at extreme backward kinematics, where effects of FSI appear to be smaller. For $p_{s}>400$ MeV/c, where the neutron is far off-shell, the model overestimates the value of $F_{2n}^{eff}$ in the region of $x^{*}$ between 0.25 and 0.6. A modification of the bound neutron structure function is one of possible effects that can cause the observed deviation.
description: 33 pages RevTeX, 9 figures, to be submitted to Phys. Rev. C. Fixed 1 Reference
Racier : a hierarchical approach for content internetworking through interdomain routing
Creators: name: Cai, Xiaojuan
Publisher: name: University of British Columbia
Year: 2009

description: Nowadays, Internet traffic is mainly comprised of the distribution of static and media rich content. While ad hoc mechanisms may extend the reach of content, Content Internetworking (CI) attempts to foster the interoperability of distinct, independent Content Networks (CNs). Unfortunately, known CI content routing approaches have scaling problems and partly duplicate existing network layer functions. In this thesis, we propose a new Routing Architecture for Content IntERnetworking (RACIER). By extending existing IP networking infrastructures to incorporate content intelligence, an Internet built on the new routing architecture can be both IP and content aware. The key features of the architecture are hierarchy and parallel IP-address based routing and name based routing, which lend themselves well to scalability and performance, while maintaining compatibility with traditional Internet architecture. The Border Gateway Protocol (BGP) is extended to support the content inter-networking in our approach. We implemented the system prototype based on the Multithread Routing Toolkit (MRT) and conducted preliminary experiments to verify our system architecture.
Dynamic residential load scheduling based on an adaptive consumption level pricing scheme
Creators: name: Haider, Haider Tarish
name: See, Ong Hang
name: Elmenreich, W.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: Computers and Society (cs.CY)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences
subject: I.6; J.7; K.4

description: Demand response (DR) for smart grids, which intends to balance the required power demand with the available supply resources, has been gaining widespread attention. The growing demand for electricity has presented new opportunities for residential load scheduling systems to improve energy consumption by shifting or curtailing the demand required with respect to price change or emergency cases. In this paper, a dynamic residential load scheduling system (DRLS) is proposed for optimal scheduling of household appliances on the basis of an adaptive consumption level (CL) pricing scheme (ACLPS). The proposed load scheduling system encourages customers to manage their energy consumption within the allowable consumption allowance (CA) of the proposed DR pricing scheme to achieve lower energy bills. Simulation results show that employing the proposed DRLS system benefits the customers by reducing their energy bill and the utility companies by decreasing the peak load of the aggregated load demand. For a given case study, the proposed residential load scheduling system based on ACLPS allows customers to reduce their energy bills by up to 53% and to decrease the peak load by up to 35%.
Discovery of the INTEGRAL X/Gamma-ray transient IGR J00291+5934: a Comptonised accreting ms pulsar ?
Creators: name: Shaw, S. E.
name: Mowlavi, N.
name: Rodriguez, J.
name: Ubertini, P.
name: Capitanio, F.
name: Ebisawa, K.
name: Eckert, D.
name: Courvoisier, T. J. -L.
name: Produit, N.
name: Walter, R.
name: Falanga, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the discovery of a high-energy transient with the IBIS/ISGRI detector on board the INTEGRAL observatory. The source, namely IGR J00291+5934, was first detected on 2nd December 2004 in the routine monitoring of the IBIS/ISGRI 20--60 keV images. The observations were conducted during Galactic Plane Scans, which are a key part of the INTEGRAL Core Programme observations. After verifying the basic source behaviour, the discovery was announced on 3rd December. The transient shows a hard Comptonised spectrum, with peak energy release at about 20 keV and a total luminosity of ~ 0.9E36 erg/s in the 5--100 keV range, assuming a distance of 3 kpc. Following the INTEGRAL announcement of the discovery of IGR J00291+5934, a number of observations were made by other instruments. We summarise the results of those observations and, together with the INTEGRAL data, identifiy IGR J00291+5934 as the 6th member of a class of accreting X-ray millisecond pulsars.
description: Accepted for publication as an A&A Letter 24/01/2005. 5 pages, 2 figures
Dirichlet-Smoothed Word Embeddings for Low-Resource Settings
Creators: name: Jungmaier, Jakob
name: Kassner, Nora
name: Roth, Benjamin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Nowadays, classical count-based word embeddings using positive pointwise mutual information (PPMI) weighted co-occurrence matrices have been widely superseded by machine-learning-based methods like word2vec and GloVe. But these methods are usually applied using very large amounts of text data. In many cases, however, there is not much text data available, for example for specific domains or low-resource languages. This paper revisits PPMI by adding Dirichlet smoothing to correct its bias towards rare words. We evaluate on standard word similarity data sets and compare to word2vec and the recent state of the art for low-resource settings: Positive and Unlabeled (PU) Learning for word embeddings. The proposed method outperforms PU-Learning for low-resource settings and obtains competitive results for Maltese and Luxembourgish.
Measurement and Interpretation of Fermion-Pair Production at LEP energies above the Z Resonance
Creators: name: The DELPHI Collaboration
name: Abdallah, J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: This paper presents DELPHI measurements and interpretations of cross-sections, forward-backward asymmetries, and angular distributions, for the e+e- -> ffbar process for centre-of-mass energies above the Z resonance, from sqrt(s) ~ 130 - 207 GeV at the LEP collider. The measurements are consistent with the predictions of the Standard Model and are used to study a variety of models including the S-Matrix ansatz for e+e- -> ffbar scattering and several models which include physics beyond the Standard Model: the exchange of Z' bosons, contact interactions between fermions, the exchange of gravitons in large extra dimensions and the exchange of sneutrino in R-parity violating supersymmetry.
description: 79 pages, 16 figures, Accepted by Eur. Phys. J. C
Improved Stochastic Multireference Perturbation Theory for Correlated Systems with Large Active Spaces
Creators: name: Halson, James J.
name: Anderson, Robert J.
name: Booth, George H.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We identify the dominant computational cost within the recently introduced stochastic and internally contracted FCIQMC-NEVPT2 method for large active space sizes. This arises from the contribution to the four-body intermediates arising from low-excitation level sampled determinant pairs. We develop an effective way to mitigate this cost via an additional stochastic step within the sampling of the required NEVPT2 intermediates. We find this systematically improvable additional sampling can reduce simulation time by 80\% without introducing appreciable error. This saving is expected to increase for larger active spaces. We combine this enhanced sampling scheme with full stochastic orbital optimization for the first time, and apply it to find FCIQMC-NEVPT2 energies for spin states of an iron porphyrin system within (24,24) active spaces with relatively meagre computational resources. This active space size can now be considered as routine for NEVPT2 calculations of strongly correlated molecular systems within this improved stochastic methodology.
description: 11 pages, 7 figures
Self-organization on surfaces: foreword
Creators: name: Fruchart, Olivier
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: After decades of work, the growth of continuous thin films, i.e., two-dimensional structures, is progressively becoming a technological issue more than a field of fundamental research. Incidentally self-organization of nanostructures on surfaces is now an important field of research, i.e., structures of dimensionality one or zero, with a steep rise of attention in the past five years. Whereas self-organization was initially motivated by potential applications, it has up to now essentially contributed to the advancement of fundamental science in low dimensions, as model systems could be produced that could not have been fabricated by lithography. This Special Issue aims at giving a cross-community timely overview of the field. The Issue gathers a broad panel of articles covering various self-organization mechanisms, specific structural characterization, physical properties, and current trends in extending the versatility of growth. The materials mostly covered here are semiconductors and magnetic materials.
description: Foreword of the Editor to Special Issue on Self-organization on surfaces
Meniscomyces Q. M. Wang & F. Y. Bai 2020, gen. nov.
Creators: name: Li, A. - H.
name: Yuan, F. - X.
name: Groenewald, M.
name: Bensch, K.
name: Yurkov, A. M.
name: Li, K.
name: Han, P. - J.
name: Guo, L. - D.
name: Aime, M. C.
name: Sampaio, J. P.
name: Jindamorakot, S.
name: Turchetti, B.
name: Inacio, J.
name: Fungsin, B.
name: Wang, Q. - M.
name: Bai, F. - Y.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Fungi
Basidiomycota
Spiculogloeomycetes
Spiculogloeales
Meniscomyces

description: Meniscomyces Q.M. Wang & F.Y. Bai gen. nov. MycoBank MB828815.
 Etymology: the genus is named after the lunately shaped vegetative cells.
 This genus is proposed for the branch represented by strain CGMCC 2.5818 T, which formed a separate clade. Member of the Spiculogloeomycetes. The genus is mainly circumscribed by the phylogenetic analysis of the seven genes dataset, in which it occurred as a separate branch within the Spiculogloeomycetes (Fig. 4A).
 Sexual reproduction not known. Colonies cream, butyrous. Budding cells present. Cells special, lunate, allantoid and falcate, which differs from the cell morphology of other taxa in Spiculogloeomycetes (Pucciniomycotina). Pseudohyphae and hyphae not produced. Ballistoconidia not formed.
 Type species: Meniscomyces layueensis Q.M. Wang, F.Y. Bai & A.H. Li.
description: Published as part of Li, A. - H., Yuan, F. - X., Groenewald, M., Bensch, K., Yurkov, A. M., Li, K., Han, P. - J., Guo, L. - D., Aime, M. C., Sampaio, J. P., Jindamorakot, S., Turchetti, B., Inacio, J., Fungsin, B., Wang, Q. - M. & Bai, F. - Y., 2020, Diversity and phylogeny of basidiomycetous yeasts from plant leaves and soil: Proposal of two new orders, three new families, eight new genera and one hundred and seven new species, pp. 17-140 in Studies In Mycology 96 on pages 113-114, DOI: 10.1016/j.simyco.2020.01.002, http://zenodo.org/record/10497182
Capillary transport in paper porous materials at low saturation levels
Creators: name: Lukyanov, Alex V.
name: Mitkin, Vladimir V.
name: Pryer, Tristan
name: Sirimark, Penpark
name: Theofanous, Theo G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The problem of capillary transport in fibrous porous materials at low levels of liquid saturation has been addressed. It has been demonstrated, that the process of liquid spreading in this type of porous materials at low saturation can be described macroscopically by a similar super-fast, non-linear diffusion model as that, which had been previously identified in experiments and simulations in particulate porous media. The macroscopic diffusion model has been underpinned by simulations using a microscopic network model. The theoretical results have been qualitatively compared with available experimental observations using persistent liquids.
[Letter from Karl August Theodor Reinbold]
Creators: name: Reinbold, Karl August Theodor
Publisher: name: Unknown
Year: 1901
Subjects: Heydrich, Franz

description: Unable to determine the Lithothamnia. Asks questions regarding relations between Heydrich and Foslie, and comments that the greatest blunder is to be found in Heydrich’s most recent paper, Die Befruchtung des [Tetrasporanginums] in Polysiphonia, where it seems that he has no idea how the "secondary Tupfel" between the cells are formed, and his observations and conclusions are pure nonsense.
Hopf bifurcations in time-delay systems with band-limited feedback
Creators: name: Illing, Lucas
name: Gauthier, Daniel J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We investigate the steady-state solution and its bifurcations in time-delay systems with band-limited feedback. This is a first step in a rigorous study concerning the effects of AC-coupled components in nonlinear devices with time-delayed feedback. We show that the steady state is globally stable for small feedback gain and that local stability is lost, generically, through a Hopf bifurcation for larger feedback gain. We provide simple criteria that determine whether the Hopf bifurcation is supercritical or subcritical based on the knowledge of the first three terms in the Taylor-expansion of the nonlinearity. Furthermore, the presence of double-Hopf bifurcations of the steady state is shown, which indicates possible quasiperiodic and chaotic dynamics in these systems. As a result of this investigation, we find that AC-coupling introduces fundamental differences to systems of Ikeda-type [Ikeda et al., Physica D 29 (1987) 223-235] already at the level of steady-state bifurcations, e.g. bifurcations exist in which limit cycles are created with periods other than the fundamental ``period-2'' mode found in Ikeda-type systems.
description: 32 pages, 5 figures, accepted for publication in Physica D: Nonlinear Phenomena
Constraining subglacial processes from surface velocity observations using surrogate-based Bayesian inference
Creators: name: Brinkerhoff, Douglas
name: Aschwanden, Andy
name: Fahnestock, Mark
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Machine Learning (cs.LG)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Basal motion is the primary mechanism for ice flux outside Antarctica, yet a widely applicable model for predicting it in the absence of retrospective observations remains elusive. This is due to the difficulty in both observing small-scale bed properties and predicting a time-varying water pressure on which basal motion putatively depends. We take a Bayesian approach to these problems by coupling models of ice dynamics and subglacial hydrology and conditioning on observations of surface velocity in southwestern Greenland to infer the posterior probability distributions for eight spatially and temporally constant parameters governing the behavior of both the sliding law and hydrologic model. Because the model is computationally expensive, classical MCMC sampling is intractable. We skirt this issue by training a neural network as a surrogate that approximates the model at a sliver of the computational cost. We find that surface velocity observations establish strong constraints on model parameters relative to a prior distribution and also elucidate correlations, while the model explains 60% of observed variance. However, we also find that several distinct configurations of the hydrologic system and stress regime are consistent with observations, underscoring the need for continued data collection and model development.
Same Old News? A Critical Discourse Analysis of Migration News in British and German Broadsheet Journalism
Creators: name: Kaulfuss, Sandra
Publisher: name: University of Leicester
Year: 2020
Subjects: Uncategorized

description: During political campaigns or in response to crises, the topic of migration has dominated headlines in Germany and the UK for decades. While negative attitudes towards migration are not a modern-day phenomenon, previous research suggests that both German and British media discourses are increasingly hostile towards migrants. This thesis examines the nexus between migration discourses in political broadsheet reporting and the development of these discourses over time in relation to political events, by analysing broadsheet articles published between the aftermath of the Fall of the Berlin Wall and concluding on the day of the UK European Union Membership Referendum on June 23rd 2016. In response to two distinct research questions, this thesis establishes how migration is represented by journalistic discourses in broadsheet newspapers over time and how these discourses relate to political developments. The first question asks how discourse is used to report migration in political news in broadsheet papers in Germany and the UK, while the second question asks whether and how the discourse changes over time. To answer these questions, the theoretical framework of this research centres around the notion of Wagner-Pacifici's (2010) “Restlessness of Events”, defining events as interrelated changes over time which are contextualised through media representation. This approach allows changes to be tracked over time and complements the methodological approach of a Critical Discourse Analysis of German and UK broadsheet newspaper articles. The thesis argues that the discourse of migration reporting is predominantly hostile, reproducing a social hierarchy biased against migrants. It concludes that there are no significant changes in the discourse over time, creating and recreating political events that favour demarcation.
Automatic formal verification for scheduled VLIW code
Creators: name: Feng, Xiushan
Publisher: name: University of British Columbia
Year: 2009

description: VLIW processors are attractive for many embedded applications, but VLIW code scheduling, whether by hand or by compiler, is extremely challenging. In this paper, I extend previous work on automated verification of low-level software to handle the complexity of modern, aggressive VLIW designs, e.g., the exposed parallelism, pipelining, and resource constraints. I implement these ideas into two prototype tools for verifying short sequences of assembly code for TI's C62x family of VLIW DSPs and Fujitsu's FR500 VLIW processor, and demonstrate the effectiveness of the tools in quickly verifying, or finding bugs in, several difficult-to-analyze code segments.
(Unintended) Consequences of export restrictions on medical goods during the Covid-19 pandemic
Creators: name: Grassia, Marco
name: Mangioni, Giuseppe
name: Schiavo, Stefano
name: Traverso, Silvio
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: General Economics (econ.GN)
subject: Trading and Market Microstructure (q-fin.TR)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: In the first half of 2020, several countries have responded to the challenges posed by the Covid-19 pandemic by restricting their export of medical supplies. Such measures are meant to increase the domestic availability of critical goods, and are commonly used in times of crisis. Yet, not much is known about their impact, especially on countries imposing them. Here we show that export bans are, by and large, counterproductive. Using a model of shock diffusion through the network of international trade, we simulate the impact of restrictions under different scenarios. We observe that while they would be beneficial to a country implementing them in isolation, their generalized use makes most countries worse off relative to a no-ban scenario. As a corollary, we estimate that prices increase in many countries imposing the restrictions. We also find that the cost of restraining from export bans is small, even when others continue to implement them. Finally, we document a change in countries' position within the international trade network, suggesting that export bans have geopolitical implications.
description: 9 pages, 1 figure, 4 tables
New insights into the structure of early-type galaxies: the Photometric Plane at z~0.3
Creators: name: La Barbera, F.
name: Covone, G.
name: Busarello, G.
name: Capaccioli, M.
name: Haines, C. P.
name: Mercurio, A.
name: Merluzzi, P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the Photometric Plane (PHP), namely the relation between the effective radius re, the mean surface brightness within that radius e, and the Sersic index n, in optical (R and I) and near-infrared (K) bands for a large sample of early-type galaxies (ETGs) in the rich cluster MS1008-1224 at z=0.306. The PHP relation has an intrinsic dispersion of ~32% in re, and turns out to be independent of waveband. This result is consistent with the fact that internal colour gradients of ETGs can have only a mild dependence on galaxy luminosity (mass). There is no evidence for a significant curvature in the PHP. We show that this can be explained if this relation origins from a systematic variation of the specific entropy of ETGs along the galaxy sequence, as was suggested from previous works. The intrinsic scatter of the PHP is significantly smaller than for other purely photometric relations, such as the Kormendy relation and the photometric Fundamental Plane, which is constructed by using colours in place of velocity dispersions. The scatter does not depend on the waveband and the residuals about the plane do not correlate with residuals of the colour-magnitude relation. Finally, we compare the coefficients of the PHP at z~0.3 with those of ETGs at z~0, showing that the PHP is a valuable tool to constrain the luminosity evolution of ETGs with redshift. The slopes of the PHP do not change significantly with redshift, while the zero-point is consistent with cosmological dimming of the surface brightness in an expanding universe plus the passive fading of galaxy stellar populations with a high formation redshift (z_f >1-2).
description: 21 pages, 10 figures, MNRAS in press
Deep Job Understanding at LinkedIn
Creators: name: Li, Shan
name: Shi, Baoxu
name: Yang, Jaewon
name: Yan, Ji
name: Wang, Shuai
name: Chen, Fei
name: He, Qi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Information Retrieval (cs.IR)
subject: Artificial Intelligence (cs.AI)
subject: Computation and Language (cs.CL)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences
subject: I.2.4; I.2.7; I.2.8

description: As the world's largest professional network, LinkedIn wants to create economic opportunity for everyone in the global workforce. One of its most critical missions is matching jobs with processionals. Improving job targeting accuracy and hire efficiency align with LinkedIn's Member First Motto. To achieve those goals, we need to understand unstructured job postings with noisy information. We applied deep transfer learning to create domain-specific job understanding models. After this, jobs are represented by professional entities, including titles, skills, companies, and assessment questions. To continuously improve LinkedIn's job understanding ability, we designed an expert feedback loop where we integrated job understanding models into LinkedIn's products to collect job posters' feedback. In this demonstration, we present LinkedIn's job posting flow and demonstrate how the integrated deep job understanding work improves job posters' satisfaction and provides significant metric lifts in LinkedIn's job recommendation system.
description: 4 pages, to appear in SIGIR2020
ALMA and MUSE observations reveal a quiescent multi-phase circumgalactic medium around the z~3.6 radio galaxy 4C 19.71
Creators: name: Falkendal, Theresa
name: Lehnert, Matthew D.
name: Vernet, Joël
name: De Breuck, Carlos
name: Wang, Wuji
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present MUSE/VLT imaging spectroscopy of rest-frame ultraviolet emission lines and ALMA observations of the [CI] $^3$P$_1$-$^3$P$_0$ emission line, probing both the ionized and diffuse molecular medium around the radio galaxy 4C 19.71 at z~3.6. This radio galaxy has extended Ly$α$ emission over a region ~100 kpc in size preferentially oriented along the axis of the radio jet. Faint Ly$α$ emission extends beyond the radio hot spots. We also find extended CIV and HeII emission over a region of ~150 kpc in size, where the most distant emission lies ~40 kpc beyond the north radio lobe and has narrow FWHM line widths of ~180 km/s and a small relative velocity offset $Δ$v~130 km/s from the systemic redshift of the radio galaxy. The [CI] is detected in the same region with FWHM~100 km/s and $Δ$v~5 km/s, while [CI] is not detected in the regions south of the radio galaxy. We interpret the coincidence in the northern line emission as evidence of relatively quiescent multi-phase gas residing within the halo at a projected distance of ~75 kpc from the host galaxy. To test this hypothesis, we performed photoionization and photo-dissociated region (PDR) modeling, using the code Cloudy, of the three emission line regions: the radio galaxy proper and the northern and southern regions. We find that the [CI]/CIV$λλ$1548,1551 and CIV$λλ$1548,1551/HeII ratios of the two halo regions are consistent with a PDR or ionization front in the circumgalactic medium likely energized by photons from the active galactic nuclei. This modeling is consistent with a relatively low metallicity, 0.03
description: Accepted for publication in Section 4. Extragalactic astronomy of Astronomy and Astrophysics
1/f noise in nanowires
Creators: name: Bid, Aveek
name: Bora, Achyut
name: Raychaudhuri, A. K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We have measured the low-frequency resistance fluctuations (1 mHz}{R^2} also increases as the diameter d is reduced. We observe that there are new features in the 1/f noise as the size of the wire is reduced and they become more prominent as the diameter of the wires approaches 15nm. It is important to investigate the origin of the new behavior as 1/f noise may become a limiting factor in the use of metal wires of nanometer dimensions as interconnects.
description: 9 pages, 6 figures, published in Nanotechnology
Supplementary material 4: Alternative models. A revised age-model for the Eocene deep-marine siliciclastic systems, Aínsa Basin, Spanish Pyrenees
Creators: name: Cantalejo, Blanca
name: Pickering, Kevin T.
name: McNiocaill, Conall
name: Bown, Paul
name: Johansen, Kyrre
name: Grant, Melissa
Publisher: name: Geological Society of London
Year: 2020
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: Supplementary material 4. Alternative age-model scenario, with shift of the identified magnetic reversals to a younger part of the stratigraphy. The R1–N1; N1–R2 and R2–N2 reversals become the C20r/C20n, C20n/C19r and C19r–C19n, respectively. This produces a significant time offset with our key nannofossils markers and is, therefore, problematic.
Is every toric variety an M-variety?
Creators: name: Bihan, Frédéric
name: Franz, Matthias
name: McCrory, Clint
name: van Hamel, Joost
Publisher: name: arXiv
Year: 2005
Subjects: subject: Algebraic Geometry (math.AG)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 14P25 (primary); 55M35, 55N91 (secondary)

description: A complex algebraic variety X defined over the real numbers is called an M-variety if the sum of its Betti numbers (for homology with closed supports and coefficients in Z/2) coincides with the corresponding sum for the real part of X. It has been known for a long time that any nonsingular complete toric variety is an M-variety. In this paper we consider whether this remains true for toric varieties that are singular or not complete, and we give a positive answer when the dimension of X is less than or equal to 3.
description: 13 pages
Minimal 4D Composite Higgs Models Under Current LHC Constraints
Creators: name: Carragher, Ethan
name: Murnane, Daniel
name: Stangl, Peter
name: Su, Wei
name: White, Martin
name: Williams, Anthony G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present preliminary results of the first convergent global fits of several minimal composite Higgs models. Our fits are performed using the differential evolution optimisation package $\texttt{Diver}$. A variety of physical constraints are taken into account, including a wide range of exclusion bounds on heavy resonance production from Run 2 of the LHC. As a by-product of the fits, we analyse the collider phenomenology of the lightest new up-type and down-type resonances in the viable regions of our models, finding some low-mass resonances that can be probed in future collider searches.
description: Accepted for publication in CHEP 2019 proceedings
Supplementary material 1: Locations of studied sections. A revised age-model for the Eocene deep-marine siliciclastic systems, Aínsa Basin, Spanish Pyrenees
Creators: name: Cantalejo, Blanca
name: Pickering, Kevin T.
name: McNiocaill, Conall
name: Bown, Paul
name: Johansen, Kyrre
name: Grant, Melissa
Publisher: name: Geological Society of London
Year: 2020
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: Supplementary material 1. Field photographs of the sampled sections.
Relativistic model for nuclear matter and atomic nuclei with momentum-dependent self-energies
Creators: name: Typel, S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The Lagrangian density of standard relativistic mean-field (RMF) models with density-dependent meson-nucleon coupling vertices is modified by introducing couplings of the meson fields to derivative nucleon densities. As a consequence, the nucleon self energies, that describe the effective in-medium interaction, become momentum dependent. In this approach it is possible to increase the effective (Landau) mass of the nucleons, that is related to the density of states at the Fermi energy, as compared to conventional relativistic models. At the same time the relativistic effective (Dirac) mass is kept small in order to obtain a realistic strength of the spin-orbit interaction. Additionally, the empirical Schroedinger-equivalent central optical potential from Dirac phenomenology is reasonably well described. A parametrization of the model is obtained by a fit to properties of doubly magic atomic nuclei. Results for symmetric nuclear matter, neutron matter and finite nuclei are discussed.
description: 14 pages, 7 figures, 5 tables, extended introduction and conclusions, additional references, minor corrections, accepted for publication in Phys. Rev. C
Supplementary material 5. A revised age-model for the Eocene deep-marine siliciclastic systems, Aínsa Basin, Spanish Pyrenees
Creators: name: Cantalejo, Blanca
name: Pickering, Kevin T.
name: McNiocaill, Conall
name: Bown, Paul
name: Johansen, Kyrre
name: Grant, Melissa
Publisher: name: Geological Society of London
Year: 2020
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: Supplementary material 5. Multiple stacked MTDs around the village of Castellazo (A), and in the Rio Sieste (Morillo System) (B), cited by Clark et al. (2017) as key locations for correlating the so-called megaturbidite "MT–4" (MTD or MTDs following the terminology in Pickering and Hiscott, 2016) from the Jaca to Aínsa basins.
Quadratic first integrals of autonomous conservative dynamical systems
Creators: name: Tsamparlis, Michael
name: Mitsopoulos, Antonios
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: An autonomous dynamical system is described by a system of second order differential equations whose solution gives the trajectories of the system. The solution is facilitated by the use of first integrals (FIs) that are used to reduce the order of the system of differential equations and, if there are enough of them, to determine the solution. Therefore, it is important that there exists a systematic method to determine the FIs. On the other hand, a system of second order differential equations defines a kinetic energy, which provides a symmetric second order tensor called kinetic metric of the system. This metric via its symmetries brings into the scene the numerous methods of differential geometry and hence it is apparent that one should manage to relate the determination of the FIs to the symmetries of the kinetic metric. The subject of this work is to provide a theorem that realizes this scenario. The method we follow considers the generic quadratic FI of the form $I=K_{ab}(t,q^{c})\dot{q}^{a}\dot{q}^{b}+K_{a}(t,q^{c})\dot{q}^{a} +K(t,q^{c})$ where $K_{ab}(t,q^{c}), K_{a}(t,q^{c}), K(t,q^{c})$ are unknown tensor quantities and requires $dI/dt = 0$. This condition leads to a system of differential equations involving the coefficients of $I$ whose solution provides all possible quadratic FIs of this form. We demonstrate the application of the theorem in the classical cases of the geodesic equations and the generalized Kepler potential. We also obtain and discuss the time-dependent FIs.
Table_A-R_RegresionCoefficients_OutputTests.pdf
Creators: name: Carmen, Miguel Angel Altamirano Del
name: García, Carlos Gay
name: Porrua, Francisco Estrada
Publisher: name: figshare
Year: 2021
Subjects: subject: Climate Science
subject: 40107 Meteorology
subject: FOS: Earth and related environmental sciences
subject: Atmospheric Sciences

description: Coefficients and misspecification tests applied to regressions at the Global and eight subcontinental land domains with Observational temperature data from HadCRUT4 and GISTEMP. Standard errors are given in parentheses. A value of 1 in columns T1 to T9 indicate that the corresponding misspecification test is significant at the 5% significance level and 0 otherwise.
Deep Negative Volume Segmentation
Creators: name: Belikova, Kristina
name: Rogov, Oleg
name: Rybakov, Aleksandr
name: Maslov, Maxim V.
name: Dylov, Dmitry V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Clinical examination of three-dimensional image data of compound anatomical objects, such as complex joints, remains a tedious process, demanding the time and the expertise of physicians. For instance, automation of the segmentation task of the TMJ (temporomandibular joint) has been hindered by its compound three-dimensional shape, multiple overlaid textures, an abundance of surrounding irregularities in the skull, and a virtually omnidirectional range of the jaw's motion - all of which extend the manual annotation process to more than an hour per patient. To address the challenge, we invent a new angle to the 3D segmentation task: namely, we propose to segment empty spaces between all the tissues surrounding the object - the so-called negative volume segmentation. Our approach is an end-to-end pipeline that comprises a V-Net for bone segmentation, a 3D volume construction by inflation of the reconstructed bone head in all directions along the normal vector to its mesh faces. Eventually confined within the skull bones, the inflated surface occupies the entire "negative" space in the joint, effectively providing a geometrical/topological metric of the joint's health. We validate the idea on the CT scans in a 50-patient dataset, annotated by experts in maxillofacial medicine, quantitatively compare the asymmetry given the left and the right negative volumes, and automate the entire framework for clinical adoption.
description: 20 pages, 5 main figures, 3 tables, 11 supplemental figures, supplementary material
Resonant photon absorption and hole burning in Cr7Ni antiferromagnetic rings
Creators: name: Wernsdorfer, W.
name: Mailly, D.
name: Timco, G. A.
name: Winpenny, R. E. P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Presented are magnetization measurements on a crystal of Cr7Ni antiferromagnetic rings. Irradiation with microwaves at frequencies between 1 and 10 GHz leads to observation of very narrow resonant photon absorption lines which are mainly broadened by hyperfin interactions. A two-pulse hole burning technique allowed us to estimate the characteristic energy diffusion time.
description: 4 pages, 5 figures
EVALUATION OF THE INTERACTION BETWEEN MODERN ADHESIVE MATERIALS AND BIOLOGICAL TISSUES IN ORTHOPEDIC DENTISTRY.
Creators: name: Usmonov, Farhodjon
name: Raimjonov, Rustambek
name: Umarkhojayeva, Mohigul
Publisher: name: Zenodo
Year: 2025

description: This article examines the interaction of modern adhesive materials, widely used in prosthodontics, with biological tissues such as pulp, dentin, and epithelium, based on scientific sources. The biocompatibility, potential toxicity, and clinical benefits of various adhesive materials with different chemical compositions are evaluated. The role of bioactive and nano-hybrid technologies in enhancing biological safety and promoting remineralization is also highlighted.
A NOTE ON THE EFFICIENCY OF INCOME REDISTRIBUTION WITH SIMPLE AND COMBINED POLICIES
Creators: name: Bullock, David S.
name: Salhofer, Klaus
name: Bullock, David S.
name: Salhofer, Klaus
Publisher: name: Unknown
Year: 1998
Subjects: Agricultural and Food Policy

description: Recent studies have investigated the efficiencies of policies that use several policy instruments simultaneously (for example, a policy that uses a production subsidy combined with a production quota). Several studies of very specific cases find that optimal combination of two policy instruments is more efficient than optimal independent use of either. In this note we demonstrate using set theory and maximization theory, that all such specific results are examples of a more general result, which is that by combining m instruments efficiently, a government can always be at least as efficient as when using a subset of those m instruments. This result holds for any of the several definitions of "efficiency" in the literature.
MODELING FRESH TOMATO MARKETING MARGINS: ECONOMETRICS AND NEURAL NETWORKS
Creators: name: Richards, Timothy J.
name: Patterson, Paul M.
name: Van Ispelen, Pieter
name: Richards, Timothy J.
name: Patterson, Paul M.
name: Van Ispelen, Pieter
Publisher: name: Unknown
Year: 1998
Subjects: subject: Marketing
subject: FOS: Economics and business

description: This study compares two methods of estimating a reduced form model of fresh tomato marketing margins: an econometric and an artificial neural network (ANN) approach. Model performance is evaluated by comparing out-of-sample forecasts for the period of January 1992 to December 1994. Parameter estimates using the econometric model fail to reject a dynamic, imperfectly competitive, uncertain relative price spread margin specification, but misspecification tests reject both linearity and log-linearity. This nonlinearity suggests that an inherently nonlinear method, such as a neural network, may be of some value. The neural network is able to forecast with approximately half the mean square error of the econometric model, but both are equally adept at predicting turning points in the time series.
Scalar glueball and meson spectroscopy in unquenched lattice QCD with improved staggered quarks
Creators: name: Gregory, Eric B.
name: Irving, Alan C.
name: McNeile, Craig C.
name: Miller, Steven
name: Sroczynski, Zbyszek
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present results of an exploratory study of singlet scalar states in unquenched QCD using both glueball and meson operators. Results for non-singlet non-strange scalar mesons are also presented. We use Asqtad improved staggered fermions and gauge configurations generated by the MILC collaboration at lattice spacings of .12 and .09 fm. In this formulation, the glueball mass is not significantly different from the quenched value at finite lattice spacing. Significant taste violations are present in the scalar sector. At light quark masses, decay channels complicate the mass determinations. There is some evidence that the non-strange singlet meson lies below the non-singlet meson.
description: Lattice 2005 (hadron spectrum and quark masses), 6 pages, 4 figures
Stellar Basins of Gravitationally Bound Particles
Creators: name: Van Tilburg, Ken
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A new physical phenomenon is identified: volumetric stellar emission into gravitationally bound orbits of weakly coupled particles such as axions, moduli, hidden photons, and neutrinos. While only a tiny fraction of the instantaneous luminosity of a star (the vast majority of the emission is into relativistic modes), the continual injection of these particles into a small part of phase space causes them to accumulate over astrophysically long time scales, forming what I call a "stellar basin", in analogy with the geologic kind. The energy density of the Solar basin will surpass that of the relativistic Solar flux at Earth's location after only a million years, for any sufficiently long-lived particle produced through an emission process whose matrix elements are unsuppressed at low momentum. This observation has immediate and striking consequences for direct detection experiments---including new limits on axion parameter space independent of dark matter assumptions---and may also increase the prospects for indirect detection of weakly interacting particles around compact stars.
description: 9 pages, 3 figures
MODELING U.S. BROILER SUPPLY RESPONSE: A STRUCTURAL TIME SERIES APPROACH
Creators: name: Kapombe, Crispin M.
name: Colyer, Dale
name: Kapombe, Crispin M.
name: Colyer, Dale
Publisher: name: Unknown
Year: 1998
Subjects: Livestock Production/Industries

description: A structural time series model is used to estimate the supply response function for broiler production in the United States using quarterly data and a structural time series model. This model has the advantage of expressing trend and seasonal elements as stochastic components, allowing a dynamic interpretation of the results and improving the forecast capabilities of the model. The results of the estimation indicate the continued importance of feed cost to poultry production and of technology as expressed by the stochastic trend variable. However, seasonal influences appear to have become less important, since the seasonal component was not statistically significant.
Using modern motion estimation algorithms in existing video codecs
Creators: name: Ringis, Daniel J.
name: Singh, Davinder
name: Pitie, Francois
name: Kokaram, Anil
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Motion estimation is a key component of any modern video codec. Our understanding of motion and the estimation of motion from video has come a very long way since 2000. More than 135 different algorithms have been recently reviewed by Scharstein et al http://vision.middlebury.edu/flow/. These new algorithms differ markedly from Block Matching which has been the mainstay of video compression for some time. This paper presents comparisons of H.264 and MP4 compression using different motion estimation methods. In so doing we present as well methods for adapting pre-computed motion fields for use within a codec. We do not observe significant gains to be had with the methods chosen w.r.t. Rate Distortion tradeoffs but the results reflect a significantly more complex interrelationship between motion and compression than would be expected. There remains much more to be done to improve the coverage of this comparison to the emerging standards but these initial results show that there is value in these explorations.
ALTERNATIVE AUCTION INSTITUTIONS FOR ELECTRIC POWER MARKETS
Creators: name: Bernard, John C.
name: Mount, Timothy D.
name: Schulze, William D.
name: Bernard, John C.
name: Mount, Timothy D.
name: Schulze, William D.
Publisher: name: Unknown
Year: 1998
Subjects: Resource /Energy Economics and Policy

description: Restructuring of electric power markets is proceeding across the United States and in many other nations around the world. The performance of these markets will influence everything from the prices faced by consumers to the reliability of the systems. The challenges of these changes present many important areas for research. For much of the northeastern United States, restructuring proposals include, at least for the short term, the formation of a single-sided auction mechanism for the wholesale market. This research uses experimental methods to analyze how these markets may function. In the experiments, the two basic uniform price auction rules are tested under three different market sizes. Early experimental results suggest the commonly proposed last-accepted-offer auction works well, but market power could be a real concern.