cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Market Power and Innovation in the Intangible Economy
Creators: name: De Ridder, M.
Publisher: name: Faculty of Economics
Year: 2019
Subjects: Business Dynamism
Growth
Intangibles
Productivity
Market Power

description: Productivity growth has stagnated over the past decade. This paper argues that the rise of intangible inputs (such as information technology) can cause a slowdown of growth through the effect it has on production and competition. I hypothesize that intangibles create a shift from variable costs to endogenous fixed costs, and use a new measure to show that the share of fixed costs in total costs rises when firms increase ICT and software investments. I then develop a quantitative framework in which intangibles reduce marginal costs and endogenously raise fixed costs, which gives firms with low adoption costs a competitive advantage. This advantage can be used to deter other firms from entering new markets and from developing higher quality products. Paradoxically, the presence of firms with high levels of intangibles can therefore reduce the rate of creative destruction and innovation. I calibrate the model using administrative data on the universe of French firms and find that, after initially boosting productivity, the rise of intangibles causes a 0.6 percentage point decline in long-term productivity growth. The model further predicts a decline in business dynamism, a fall in the labor share and an increase in markups, though markups overstate the increase in firm profits.
Comaroma
Creators: name: Oj, Ryoji
Publisher: name: Zenodo
Year: 1960
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Anapidae
Comaroma

description: Genus COMAROMA Bertkau 1864 Corresp. Naturhist. ver. preuss. Rheinl. P. 14
Type: C. Simoni Bertkau
description: Published as part of Oj, Ryoji, 1960, Linyphiid Spiders of Japan (part), pp. 184-185 in J. Inst. Polytechnics Osaka City, D 11 on page 184
Low-energy Pion-nucleon Scattering
Creators: name: Gibbs, W. R.
name: Ai, Li
name: Kaufmann, W. B.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: This paper contains the results of an analysis of recent low-energy pion-nucleon scattering experiments. Obtained are phase shifts, the pion-nucleon coupling constant and an estimate of the Sigma term.
description: 30 pages, 11 figures, LaTeX
Microscopic Mechanism of the Helix-to-Layer Transformation in Elemental Group VI Solids
Creators: name: Liu, Dan
name: Lin, Xianqing
name: Tomanek, David
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the conversion of bulk Se and Te, consisting of intertwined a helices, to structurally very dissimilar, atomically thin two-dimensional (2D) layers of these elements. Our ab initio calculations reveal that previously unknown and unusually stable δ- and η-2D allotropes may form in an intriguing multi-step process that involves a concerted motion of many atoms at dislocation defects. We identify such a complex reaction path involving zipper-like motion of such dislocations that initiate structural changes. With low activation barriers <0.3 eV along the optimum path, the conversion process may occur at moderate temperatures. We find all one-dimensional (1D) and 2D chalcogen structures to be semiconducting.
description: accepted by Nano Letters
Nonparametric Predictive Regressions for Stock Return Prediction
Creators: name: Cheng, T.
name: Gao, J.
name: Linton, O.
Publisher: name: Faculty of Economics
Year: 2019
Subjects: Kernel estimator
locally stationary process
series estimator
stock return prediction

description: We propose two new nonparametric predictive models: the multi-step nonparametric predictive regression model and the multi-step additive predictive regression model, in which the predictive variables are locally stationary time series. We define estimation methods and establish the large sample properties of these methods in the short horizon and the long horizon case. We apply our methods to stock return prediction using a number of standard predictors such as dividend yield. The empirical results show that all of these models can substantially outperform the traditional linear predictive regression model in terms of both in-sample and out-of-sample performance. In addition, we _nd that these models can always beat the historical mean model in terms of in-sample fitting, and also for some cases in terms of the out-of-sample forecasting. We also compare our methods with the linear regression and historical mean methods according to an economic metric. In particular, we show how our methods can be used to deliver a trading strategy that beats the buy and hold strategy (and linear regression based alternatives) over our sample period.
Spinons, Solitons and Magnons in One-dimensional Heisenberg-Ising Antiferromagnets
Creators: name: Singh, Rajiv R. P.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We calculate the excitation spectra for the one-$d$ Heisenberg-Ising antiferromagnets by expansions around the Ising limit. For $S=1/2$, the calculated expansion coefficients for the spinon-spectra agree term by term with the solution of Johnson and McCoy. For $S=1$, the solitons become gapless before the Heisenberg limit is reached, signalling a transition to the Haldane phase. By applying a staggered field we calculate the one-magnon spectra for the $S=1$ Heisenberg chain. For $S=3/2$ the quantum renormalization of the spin-wave spectra is calculated to be approximately $1.16$.
description: 4 pages, RevTex, 3 postscript figures, Latex file and figures have been uuencoded
Tuning superconductivity in twisted bilayer graphene
Creators: name: Yankowitz, Matthew
name: Chen, Shaowen
name: Polshyn, Hryhoriy
name: Watanabe, K.
name: Taniguchi, T.
name: Graf, David
name: Young, Andrea F.
name: Dean, Cory R.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Materials with flat electronic bands often exhibit exotic quantum phenomena owing to strong correlations. Remarkably, an isolated low-energy flat band can be induced in bilayer graphene by simply rotating the layers to 1.1$^{\circ}$, resulting in the appearance of gate-tunable superconducting and correlated insulating phases. Here, we demonstrate that in addition to the twist angle, the interlayer coupling can also be modified to precisely tune these phases. We establish the capability to induce superconductivity at a twist angle larger than 1.1$^{\circ}$ $-$ in which correlated phases are otherwise absent $-$ by varying the interlayer spacing with hydrostatic pressure. Realizing devices with low disorder additionally reveals new details about the superconducting phase diagram and its relationship to the nearby insulator. Our results demonstrate twisted bilayer graphene to be a uniquely tunable platform for exploring novel correlated states.
description: 21 Pages, 14 Figures. (v2) Abstract updated
Zur politischen Ökonomik des Vollgeldkonzepts
Creators: name: Dietz, Raimund
Publisher: name: Zenodo
Year: 2019
Subjects: Vollgeld, Geld, MMT, Geldtheorie, Ordnungspolitik, Geldschöpfung, Geldfunktionen

description: Der augenfälligste Widerspruch der Ökonomik ist der: ohne Geld gibt es keine Wirtschaft; aber in der Wirtschaftstheorie spielt Geld keine Rolle. Ein ordnungspolitischer Ansatz, wie der des Vollgeldkonzepts, hängt daher, was seine theoretische Begründung betrifft, in der Luft. Um ihm diese zu verschaffen, formuliere ich „first principles“ des Geldes, in welcher die Tauschmittelfunktion des Geldes im Vordergrund steht. Sie sollen der geldtheoretischen Diskussion um die Funktionen des Geldes in der Wirtschaft einen neuen Impuls geben. Es lässt sich zeigen, dass der Vollgeldansatz diesen „first principles“, d.h. der Natur des Geldes, in vollem Umfang entspricht. Die „first principles“ machen aber auch die Absurdität der jetzigen Geldordnung als auch die Abwegigkeit anderer Ansätze, etwa der Modern Money Theory, sichtbar. Eine Neuorientierung ist möglich, wenn die Ökonomik die Theorie der Wirtschaft von einer Güterwirtschaftslehre (und Gleichgewichtsökonomik) auf eine Theorie der Wirtschaft als Katallaktik (commodity economy, exchange economy) umstellt. Geld ist nicht nur eine besonders liquide Ware, sondern die Ware schlechthin, die alle Güter in Waren verwandelt. Wenn wir den Warenbegriff im Sinne von Georg Simmel (Philosophie des Geldes, 1900) reformulieren, können wir den unnützen Streit über die Herkunft des Geldes – den Streit zwischen der traditionellen Waren- und Staatstheorie des Geldes (hinter dem der ideologische Kampf zwischen Neoliberalen und Etatisten tobt) – zugunsten einer funktionellen Theorie auflösen, die zeigt, dass sowohl die Entwicklung von Märkten als auch von Staaten nur durch Geld ermöglicht wurde und ein Vollgeldregime nahelegt. Die Kredittheorie des Geldes muss aber auf alle Fälle abgelehnt werden. Sie ist logisch inkonsistent und steht einer Ordnung des Geldwesens im Wege.
Estimation and Inference in Semiparametric Quantile Factor Models
Creators: name: Ma, S.
name: Linton, O.
name: Gao, J.
Publisher: name: Faculty of Economics
Year: 2019
Subjects: Cross-Sectional Dependence
Fama-French Model
Inference
Quantile
Sieve Estimation

description: We consider a semiparametric quantile factor panel model that allows observed stock-specific characteristics to affect stock returns in a nonlinear time-varying way, extending Connor, Hagmann, and Linton (2012) to the quantile restriction case. We propose a sieve-based estimation methodology that is easy to implement. We provide tools for inference that are robust to the existence of moments and to the form of weak cross-sectional dependence in the idiosyncratic error term. We apply our method to daily stock return data where we find significant evidence of nonlinearity in many of the characteristic exposure curves.
Note: On the memory kernel and the reduced system propagator
Creators: name: Kidon, Lyran
name: Wang, Haobin
name: Thoss, Michael
name: Rabani, Eran
Publisher: name: arXiv
Year: 2018
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We relate the memory kernel in the Nakajima-Zwanzig-Mori time-convolution approach to the reduced system propagator which is often used to obtain the kernel in the Tokuyama-Mori time-convolutionless approach. The connection provides a robust and simple formalism to compute the memory kernel for a generalized system-bath model circumventing the need to compute high order system-bath observables. We illustrate this for a model system with electron-electron and electron-phonon couplings, driven away from equilibrium.
title: ADCO, Neuvième cartulaire de Saint-Étienne de Dijon (1661 - 1684), Cart. 32 (G 136), 745 folios, f. 0659
Creators: name: de la Côte d'Or, Archives départementales
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Neuvième cartulaire de Saint-Étienne de Dijon (1661 - 1684), Archives départementales de la Côte-d'Or, Cart. 32 (G 136), 745 folios, f. 0659, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Neuvième cartulaire de Saint-Étienne de Dijon (1661 - 1684), Archives départementales de la Côte-d'Or, Cart. 32 (G 136), 745 folios, f. 0659, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
Beyond sunspots: Studies using the McIntosh Archive of global solar magnetic field patterns
Creators: name: Gibson, Sarah E.
name: Webb, David
name: Hewins, Ian M.
name: McFadden, Robert H.
name: Emery, Barbara A.
name: Denig, William
name: McIntosh, Patrick S.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In 1964 (Solar Cycle 20; SC 20), Patrick McIntosh began creating hand-drawn synoptic maps of solar magnetic features, based on H$α$ images. These synoptic maps were unique in that they traced magnetic polarity inversion lines, and connected widely separated filaments, fibril patterns, and plage corridors to reveal the large-scale organization of the solar magnetic field. Coronal hole boundaries were later added to the maps, which were produced, more or less continuously, into 2009 (i.e., the start of SC 24). The result was a record of $\sim45$ years ($\sim570$ Carrington rotations), or nearly four complete solar cycles of synoptic maps. We are currently scanning, digitizing and archiving these maps, with the final, searchable versions publicly available at NOAA's National Centers for Environmental Information. In this paper we present preliminary scientific studies using the archived maps from SC 23. We show the global evolution of closed magnetic structures (e.g., sunspots, plage, and filaments) in relation to open magnetic structures (e.g., coronal holes), and examine how both relate to the shifting patterns of large-scale positive and negative polarity regions.
PUSHTA OLGICHNING YUMSHATKICHGA NISBATAN O'RNATILISH MASOFASINI ANIQLASH
Creators: name: Xudoyarov, Anvar
name: Yuldasheva, Matluba
Publisher: name: Zenodo
Year: 2024

description: Maqolada kombinatsiyalashgan agregat pushta olgichining yumshatkichga nisbatan o‘rnatilish masofasini aniqlash bo‘yicha olib borilgan eksperimental tadqiqot natijalari keltirilgan. Olingan natijalarga asosan kam energiya sarflangan holda qo‘yilgan agrotexnika talablari darajasidagi  pushtalarni olish uchun pushta olgichning yumshatkichga nisbatan bo‘ylama yo‘nalishda o‘rnatilish masofasi kamida 600 mm bo‘lishi lozim.
Searching for New Physics in Non-Leptonic B Decays
Creators: name: Fleischer, Robert
name: Matias, Joaquim
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present allowed regions in the space of observables of certain non-leptonic B-meson decays that characterize these modes within the Standard Model. A future measurement of observables lying significantly outside of these regions would indicate the presence of new physics. Making use of SU(3) arguments, we give the range for $B\toπK$ decays, and for the system of $B_d\toπ^+π^-$, $B_s\to K^+K^-$ modes.
description: 7 pages, 4 figures, includes update in view of recent CLEO results, to appear in Phys. Rev. D
Stability of bubble nuclei through Shell-Effects
Creators: name: Dietrich, Klaus
name: Pomorski, Krzysztof
Publisher: name: arXiv
Year: 1997
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate the shell structure of bubble nuclei in simple phenomenological shell models and study their binding energy as a function of the radii and of the number of neutron and protons using Strutinsky's method. Shell effects come about, on the one hand, by the high degeneracy of levels with large angular momentum and, on the other, by the big energy gaps between states with a different number of radial nodes. Shell energies down to -40 MeV are shown to occur for certain magic nuclei. Estimates demonstrate that the calculated shell effects for certain magic numbers of constituents are probably large enough to produce stability against fission, alpha-, and beta-decay. No bubble solutions are found for mass number A < 450.
description: 9 pages and 9 figures in the eps format included
Loop Calculations and OZI Rule
Creators: name: Markushin, V. E.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The role of two step mechanisms in the OZI rule violation in NNbar annihilation at low energies is reviewed. The full calculation of two-meson doorway mechanisms shows that the off-mass-shell contributions are important. Moreover, for the (phi pi0) and (phi rho) annihilation channels three-meson doorway contributions are non-negligible and improve agreement with the data. A significant enhancement of phi production is found in the resonant rescattering mechanisms p pbar -> pi+ pi- K Kbar -> pi+ pi- phi and p pbar -> eta K Kbar -> eta phi.
description: 9 pages, LaTeX, axodraw, 2 PostScript figures, submitted to Nuclear Physics A
A Unified Framework for Efficient Estimation of General Treatment Models
Creators: name: Ai, C.
name: Linton, O.
name: Motegi, K.
name: Zhang, Z.
Publisher: name: Faculty of Economics
Year: 2019
Subjects: Treatment effect
Semiparametric efficiency
Stabilized Weights

description: This paper presents a weighted optimization framework that unifies the binary, multivalued, continuous, as well as mixture of discrete and continuous treatment, under the unconfounded treatment assignment. With a general loss function, the framework includes the average, quantile and asymmetric least squares causal effect of treatment as special cases. For this general framework, we first derive the semiparametric efficiency bound for the causal effect of treatment, extending the existing bound results to a wider class of models. We then propose a generalized optimization estimation for the causal effect with weights estimated by solving an expanding set of equations. Under some sufficient conditions, we establish consistency and asymptotic normality of the proposed estimator of the causal effect and show that the estimator attains our semiparametric efficiency bound, thereby extending the existing literature on efficient estimation of causal effect to a wider class of applications. Finally, we discuss estimation of some causal effect functionals such as the treatment effect curve and the average outcome. To evaluate the finite sample performance of the proposed procedure, we conduct a small scale simulation study and find that the proposed estimation has practical value. To illustrate the applicability of the procedure, we revisit the literature on campaign advertise and campaign contributions. Unlike the existing procedures which produce mixed results, we find no evidence of campaign advertise on campaign contribution.
Comaroma
Creators: name: Bösenberg, W
Publisher: name: Zenodo
Year: 1903
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Anapidae
Comaroma

description: Comaroma Simonii Bertk.
Taf. XI, Fig. 163. A ♀ von oben 7 /1, B Hinterleib des ♀ von unten, C linker ♂ Taster von aussen, D die Augen des ♂.
Ganze Länge ♀ 2, ♂ 1 3/4 mm.
♀ Vorderleib oben: rotbraun, dunkelbraun umsäumt. Von den Augen sind die Stirnaugen verkümmert und erscheinen entweder als zwei dunkle Punkte D oder als ein schwarzer,,Wisch" (wie Bertkau sich ausdrückt), die vorderen S.-Augen sind sehr gross, dann folgen in der Grösse die hinteren S.-Augen und zuletzt die Scheitelaugen D. Das Brustschild ist rotbraun, wie der Rücken, dunkelbraun umsäumt, wappenförmig und unter den Maxillen tief ausgeschnitten, Mandibeln sind hellbraun, Maxillen und Lippe braun, die ausserordentlich zarten Taster gelb, die kräftigen Füsse braun oder rötlich braun, bis auf die Kniee und Tarsen, die heller und mehr lehmgelb sind, namentlich an den zwei ersten Paaren.
Hinterleibsrücken ist bräunlich gelb mit kleinen braunen Fleckchen übersäet, aus denen je ein längeres Haar hervorgeht, in der Haut liegen zwei dunkelrotbraune Leisten, eine äussere, die den Rand des Rückens umgiebt und eine innere; beide reichen jedoch nicht ans Ende des Rückens A. Der Bauch ist oberhalb der sehr tiefliegenden Spalte einfarbig braun, unter derselben gelb mit hellbraunen Flecken, wie auf dem Rücken; drei dunkle Chitinleisten ziehen sich vom Rücken her schräg zu den kurzen, hellgelben Spinnwarzen. Die Epigyne besteht aus zwei kleinen runden Oeffnungen, unter welchen die schwärzlichen Samentaschen durch die Bauchplatte sichtbar sind.
♂ ist dem ♀ sehr ähnlich, jedoch dunkler und zwar rotbraun gefärbt, sowohl am Vorderleib, als Hinterleib. Die Hinterleibsrückenplatte ist lederartig genarbt und nicht gefleckt wie beim ♀, der Bauch rötlich braun, wie der Rücken, im übrigen wie beim ♀. Der Taster C ist so charakteristisch, dass diese Tiere mit keiner ändern Art der Kleinspinnen verwechselt werden können.
Fundorte: Von diesen merkwürdigen Spinnen fand Professor Bertkau eine grössere Anzahl in der Umgebung Bonns und im Siebengebirge unter Steinen. 1)
1) Bertkau in den Verhandlungen des naturhist. Vereins der Rheinlande etc. Bonn 1889. Fol. 74 und 1.
description: Published as part of Bösenberg, W, 1903, Die Spinnen Deutschlands. Excerpt, pp. 126-127 in Zoologica 14 on pages 126-127
Superconducting circuit quantum computing with nanomechanical resonators as storage
Creators: name: Pechal, Marek
name: Arrangoiz-Arriola, Patricio
name: Safavi-Naeini, Amir H.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyze the quantum information processing capability of a superconducting transmon circuit used to mediate interactions between quantum information stored in a collection of phononic crystal cavity resonators. Having only a single processing element to be controlled externally makes this approach significantly less hardware-intensive than traditional architectures with individual control of each qubit. Moreover, when compared with the commonly considered alternative approach using coplanar waveguide or 3d cavity microwave resonators for storage, the nanomechanical resonators offer both very long lifetime and small size -- two conflicting requirements for microwave resonators. A detailed gate error analysis leads to an optimal value for the qubit-resonator coupling rate as a function of the number of mechanical resonators in the system. For a given set of system parameters, a specific amount of coupling and number of resonators is found to optimize the quantum volume, an approximate measure for the computational capacity of a system. We see this volume is higher in the proposed hybrid nanomechanical architecture than in the competing on-chip electromagnetic approach.
Connectors and Influencers
Creators: name: Choi, S
name: Goyal, S.
name: Moisan, F.
Publisher: name: Faculty of Economics
Year: 2019

description: We conduct an experiment to understand the principles that govern network formation. The design of the experiment builds on a model of linking and efforts taken from Galeotti and Goyal [2010]. In order to reduce cognitive complexity facing human subjects and facilitate learning, we develop a new experimental platform that integrates a network visualization tool using an algorithm of Barnes and Hut [1986] with an interactive tool of asynchronous choices in continuous time. Our experiment provides strong support for macroscopic predictions of the theory: there is specialization in linking and efforts across all treatments. Moreover, and in line with the theory, the specialization is more pronounced in larger groups. Thus subjects abide by the law of the few. Information on payoffs provided to subjects affects their behavior and yields differential welfare consequences. In the treatment where subjects see only their own payoffs, in large groups, the most connected individuals compete fiercely-they exert large efforts and have small earnings. By contrast, when a subject sees everyone's payoffs, in large groups, the most connected individuals engage in less intense competition-they exert little effort and have large earnings. The effects of information are much more muted in small groups.
АСПЕКТЫ КОНТАКТИРОВАНИЯ: РУССКО- ТЮРСКИЕ ЯЗЫК
Creators: name: Худайкулова, Феруза
Publisher: name: Zenodo
Year: 2024

description: Цель исследования – выявить особенности семантики и функционирования тюркизмов в составе сравнений в русском языке. Анализ семантики и контекстуальных особенностей функционирования тюркизмов наименований одежды проведен на базе Национального корпуса русского языка и Письменного корпуса татарского языка. К исследованию привлекались данные толковых, этимологических словарей русского языка, словарей устойчивых сравнений
High resolution millimetre imaging of the CI Tau protoplanetary disc - a massive ensemble of protoplanets from 0.1 - 100 au
Creators: name: Clarke, Cathie J.
name: Tazzari, Marco
name: Juhász, Attila
name: Rosotti, Giovanni
name: Booth, Richard
name: Facchini, Stefano
name: Ilee, John D.
name: Johns-Krull, Christopher M.
name: Kama, Mihkel
name: Meru, Farzana
name: Prato, Lisa
Publisher: name: arXiv
Year: 2018
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present high resolution millimeter continuum imaging of the disc surrounding the young star CI Tau, a system hosting the first hot Jupiter candidate in a protoplanetary disc system. The system has extended mm emission on which are superposed three prominent annular gaps at radii ~ 13, 39 and 100 au. We argue that these gaps are most likely to be generated by massive planets so that, including the hot Jupiter, the system contains four gas giant planets at an age of only 2 Myr. Two of the new planets are similarly located to those inferred in the famous HL Tau protoplanetary disc; in CI Tau, additional observational data enables a more complete analysis of the system properties than was possible for HL Tau. Our dust and gas dynamical modeling satisfies every available observational constraint and points to the most massive ensemble of exo-planets ever detected at this age, with its four planets spanning a factor 1000 in orbital radius.Our results show that the association between hot Jupiters and gas giants on wider orbits, observed in older stars, is apparently in place at an early evolutionary stage.
description: Accepted on Astrophysical Journal Letters; 7 pages, 2 figures
Muon g-2 and precision electroweak physics in the MSSM
Creators: name: Cho, Gi-Chol
name: Hagiwara, Kaoru
name: Hayakawa, Masashi
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The minimal supersymmetric extension of standard model (MSSM) is examined by analyzing its quantum effects on the precision electroweak measurements and the muon g-2. We examine carefully the effects of light charginos and neutralinos that are found to improve the fit to the electroweak data. We identify two distinct regions on the $(μ, M_2)$-plane that fit well to the electroweak data and give significant contribution to muon g-2.
description: 13 pages, LaTeX2e, 6 eps-formated figures, remarks on b to s gamma, references and acknowledgement added, accepted for publication in Phys. Lett. B
Quantilograms under Strong Dependence
Creators: name: Lee, Ji Hyung
name: Linton, Oliver B
name: Whang, Yoon-Jae
Publisher: name: Apollo - University of Cambridge Repository
Year: 2019
Subjects: Long Memory
Moving Block Bootstrap
Nonlinear Dependence
Quantilogram and Cross-Quantilgoram
Uniform Reduction Principle

description: We develop the limit theory of the quantilogram and cross-quantilogram under long memory. We establish the sub-root-n central limit theorems for quantilograms that depend on nuisance parameters. We propose a moving block bootstrap (MBB) procedure for inference and we establish its consistency thereby enabling a consistent confidence interval construction for the quantilograms. The newly developed reduction principles for the quantilograms serve as the main technical devices used to derive the asymptotics and establish the validity of MBB. We report some simulation evidence that our methods work satisfactorily. We apply our method to quantile predictive relations between financial returns and long-memory predictors.
Limited Cognitive Ability and Selective Information Processing
Creators: name: Leung, B. T. K.
Publisher: name: Faculty of Economics
Year: 2018
Subjects: limited ability
information overload
information avoidance
confirmation bias
wishful thinking
polarization

description: This paper studies the information processing behavior of a decision maker (DM) who can only process a subset of all the information he receives: before taking an action, the DM receives sequentially a number of signals and decides whether to process or ignore each of them as it is received. The model generates an information processing behavior consistent with that documented in the psychological literature: first, the DM chooses to process signals that are strong; second, his processing strategy exhibits confirmation bias if he has a strong prior belief; third, he tends to process signals that suggest favorable outcomes (wishful thinking). As an application I analyze how the Internet and the induced change in information availability affects the processing behavior of the DM. I show that providing more/better information to the DM could strengthen his confirming bias.
Towards a classification of planar maps
Creators: name: Diet, Alexandre
name: Barthelemy, Marc
Publisher: name: arXiv
Year: 2018
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Planar graphs and their spatial embedding -- planar maps -- are used in many different fields due to their ubiquity in the real world (leaf veins in biology, street patterns in urban studies, etc.) and are also fundamental objects in mathematics and combinatorics. These graphs have been well described in the literature, but we do not have so far a clear way to cluster them in different families. A typology of planar maps would be very useful and would allow to monitor their changes, to compare them with each other, or to correlate their structure with other properties. Using an algorithm which merges recursively the smallest areas in the graph with the largest ones, we plot the Gini coefficient of areas of cells and obtain a profile associated to each network. We test the relevance of these `Gini profiles' on simulated networks and on real street networks of Barcelona (Spain), New York City (USA), Tokyo (Japan), and discuss their main properties. We also apply this method to the case of Paris (France) at different dates which allows us to follow the structural changes of this system. Finally, we discuss the important ingredient of spatial heterogeneity of real-world planar graphs and test some ideas on Manhattan and Tokyo. Our results show that the Gini profile encodes various informations about the structure of the corresponding planar map and represents a good candidate for constructing relevant classes of these objects.
description: 10 pages, 14 figures
Heat transfer at the van der Waals interface between graphene and NbSe2
Creators: name: Sata, Yohta
name: Moriya, Rai
name: Yabuki, Naoto
name: Masubuchi, Satoru
name: Machida, Tomoki
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Graphene has been widely used to construct low-resistance van der Waals (vdW) contacts to other two-dimensional (2D) materials. However, a rise of electron temperature of the graphene under a current flow has not been seriously considered in many applications. Owing to its small electronic heat capacity and electron-phonon coupling, electron temperature of the graphene can be increased easily by the application of current. The heat generated within the graphene is transferred to the contacted 2D materials through the vdW interface and potentially influences their properties. Here, we compare the superconducting critical currents of an NbSe2 flake for two different methods of current application: with a Au/Ti electrode fabricated by thermal evaporation and with a graphene electrode contacted to the NbSe2 flake through a vdW interface. The influence of the heat transfer from the graphene to NbSe2 is detected through the change of the superconductivity of NbSe2. We found that the critical current of NbSe2 significantly reduces when the current is applied with the graphene electrode compared to that from the conventional Au/Ti electrode. Further, since the electron heating in graphene exhibits ambipolar back-gate modulation, we demonstrate the electric field modulation of the critical current in NbSe2 when the current is applied with graphene electrode. These results are attributed to the significant heat transfer from the graphene electrode to NbSe2 through vdW interface.
description: 22 pages, 8 figures
Efficient Estimation of Nonparametric Regression in The Presence of Dynamic Heteroskedasticity
Creators: name: Linton, O.
name: Xiao, Z.
Publisher: name: Faculty of Economics
Year: 2019
Subjects: Efficiency
Heteroskedasticity
Local Polynomial Estimation
Nonparametric Regression.

description: We study the efficient estimation of nonparametric regression in the presence of heteroskedasticity. We focus our analysis on local polynomial estimation of nonparametric regressions with conditional heteroskedasticity in a time series setting. We introduce a weighted local polynomial regression smoother that takes account of the dynamic heteroskedasticity. We show that, although traditionally it is adviced that one should not weight for heteroskedasticity in nonparametric regressions, in many popular nonparametric regression models our method has lower asymptotic variance than the usual unweighted procedures. We conduct a Monte Carlo investigation that confirms the efficiency gain over conventional nonparametric regression estimators infinite samples.
Why do nearby stars preferentially have late-T companions? Étienne Artigau
Creators: name: Artigau, Étienne
name: Baron, Frédérique
name: Cook, Neil
Publisher: name: Zenodo
Year: 2019
Subjects: astronomy
WISE
nearby stars
co-moving companions

description: Presentation given at BDEXOCON3. Describes a search for LTY companions to stars within 20pc with WISE multi-epoch visits.
Navigating the Landscape: Exploring Challenges and Opportunities for General Insurance in Rural India
Creators: name: Dr.Parihar Suresh Dahake
Publisher: name: Zenodo
Year: 2023

description: India's heart beats in the rural segment where over 70% of our population lives and toils to enrich our country. Rural insurance as more than a mere social responsibility it is protection covers custom-designed to suit the needs of rural India. Rural insurance Protect your agriculture business in the best manner possible by opting for Rural Insurance. The rural markets, too have gained from the changes in the economy with the overall per capita income, literacy levels and the introduction of new products and services having increased over the decade. Other triggers to the rural regions economic development include the Indian government policies of loan waivers, employment guarantee schemes and better housing facilities. Amongst the sectors that have commenced their foray in the rural regions insurance reveals a huge potential, with high awareness levels and low penetration of insurance. But it is common perception and belief amongst the insurance companies that it is expensive to do business in rural areas. Most companies are focusing only on meeting regulatory requirements from rural areas and don't see them as commercially viable rural business opportunities, waiting to be exploited. so in this paper the challenges and opportunities of general insurance in rural market will be highlighted.
Equilibrium supply security in a multinational electricity market with renewable production
Creators: name: Tangeras, T.
Publisher: name: Faculty of Economics
Year: 2017
Subjects: Capacity mechanism
decentralized policy making
multinational

description: An increasing reliance on solar and wind power has raised concern about system ability to consistently satisfy electricity demand. This paper examines countries' unilateral incentives to achieve supply security through capacity reserves and market integration in a multinational electricity market. Capacity reserves protect consumers against blackouts and extreme prices, but distort consumption and investment. Market integration alleviates supply constraints, but requires costly network reinforcement. Capacity reserves can be up- or downward distorted, but network investment is always insufficient in equilibrium. Capacity reserves are smaller when there are financial markets or when dispatched solely to resolve domestic supply constraints.
QCD running coupling effects for the non-singlet structure function at small x
Creators: name: Ermolaev, B. I.
name: Greco, M.
name: Troyan, S. I.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A generalization of the leading-order DGLAP evolution at small x is performed for the non-singlet structure function by resumming the leading-order DGLAP anomalous dimension to all orders in the QCD coupling. Explicit expressions are obtained for the non-singlet structure function of the deep inelastic scattering, taking into account both the double-logarithmic and the single-logarithmic contributions, including the running alpha_s effects. It is shown that when these contributions are included, the asymptotic small-x behaviour is power-like, with an exponent of about 0.4.
description: Latex, 20 pages, 7 figures
Detailed analysis of transitions in the CO oxidation on Palladium(111) under noisy conditions
Creators: name: Cisternas, Jaime
name: Wehner, Stefan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: It has been shown that CO oxidation on Pd(111) under ultra-high vacuum conditions can suffer rare transitions between two stable states triggered by weak intrinsic perturbations. Here we study the effects of adding controlled noise by varying the concentrations of O2 and CO that feed the vacuum chamber, while the total flux stays constant. In addition to the regime of rare transitions between states of different CO2 reaction rate induced by intrinsic fluctuations, we found three distinct effects of external noise depending on its strength: small noise suppresses transitions and stabilizes the upper rate state; medium noise induces bursting; and large noise gives rise to reversible transitions in both directions. To explain some of the features present in the dynamics, we propose an extended stochastic model that includes a global coupling through the gas phase to account for the removal of CO gas caused by the adsorption of the Pd surface. The numerical simulations based in the model show a qualitative agreement with the noise-induced transitions found in experiments, but suggest that more complex spatial phenomena are present in the observed fluctuations.
Secondary metabolites from the fermented rice of the fungus Monascus purpureus and their bioactivities
Creators: name: Ho-Cheng Wu
name: Ming-Jen Cheng
name: Ming-Der Wu
name: Jih-Jung Chen
name: Yen-Lin Chen
name: Hsun-Shuo Chang
name: Chen, Kai-Ping
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified

description: Phytochemical investigation of the EtOAc-soluble fraction of the ethanolic extract of a yellow mutant of the fungus Monascus purpureus BCRC 38110 (Eurotiaceae) grown on rice resulted in the isolation of one new azaphilone derivative, monapurpureusone (1), one acetophenone metabolite isolated for the first time from natural source, monapurpureusin (2), along with four known compounds, TW94a (3), ergosterol (4), monascin (5), and ankaflavin (6). The structures and relative configurations of these compounds were elucidated by spectroscopic analyses, including 1D- and 2D-NMR spectroscopy and mass spectrometry, and by the comparison of their NMR data with those of related compounds. Some phytochemicals were evaluated for both anti-inflammatory activity through the measurement of nitric oxide (NO) production levels in lipopolysaccharide (LPS)-stimulated murine-derived macrophages RAW264.7 cell lines and antioxidant activities.
Coleophora mosasaurus
Creators: name: Li, Houhun
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Coleophoridae
Coleophora
Coleophora mosasaurus

description: Coleophora mosasaurus (Falkovitsh, 1988) (Figs. 1, 5–7) Omphalopoda mosasaurus Falkovitsh, 1988: 148, fig. 11. Coleophora mosasaurus (Falkovitsh, 1988): Baldizzone et al., 2006: 83. Male. Wing expanse 14.0–15.0 mm. Male genitalia (Figs. 5–6). As illustrated. Abdomen (Fig. 7). As illustrated. Material examined 1 ♂, CHINA: Yangling [34 17' N, 108 04' E], Shaanxi Province, alt. 450 m, 16. iv.1993, leg. Houhun Li, genitalia slide no. L96144; 1 ♂, Xining [36 38' N, 101 48' E], Qinghai Province, alt. 2280 m, 23.v.1995, genitalia slide no. L96163. Distribution China: Shaanxi, Qinghai; Turkmenistan. Biology Falkovitsh (1988) recorded the Lycium sp. and Lycium kopetdaghi Pojark as host plants in Turkmenistan. In China C. mosasaurus feeds on wild Lycium barbarum Linnaeus. Remarks The genus Omphalopoda Falkovitch, 1987 was proposed as a synonym of Coleophora (Vives Moreno, 1988). Coleophora mosasaurus (Falkovitsh) is similar to Coleophora stegosaurus Falkovitsh by having the sacculus with a bifurcated apex, and the appendix of the outer sheath and the cornuti absent in the male genitalia, but it can be distinguished from the latter by the symmetrical bifurcation of the saccular apex, which is asymmetrical in C. stegosaurus. This species is recorded from China for the first time.
description: Published as part of Li, Houhun, 2006, Notes on Coleophora (Lepidoptera: Coleophoridae) injurious to Lycium (Solanaceae), with descriptions of two new species from China, pp. 57-68 in Zootaxa 1184 (1) on page 60, DOI: 10.11646/zootaxa.1184.1.4, http://zenodo.org/record/5064181
description: {"references": ["Falkovitsh, M. I. (1988) [On the fauna of casebearers (Lepidoptera, Coleophoridae) from the southern Turkmenia (with descriptions of new species). part 1.] Proceedings of the Zoological Institute, Leningrad., 178, 134 - 162. [in Russian.]", "Baldizzone, G., van der Wolf, H. & Landry, J. - F. (2006) Coleophoridae, Coleophorinae (Lepidoptera). World Catalogue of Insects, 8, 1 - 215.", "Vives Moreno, A. (1988) Catalogo mundial sistematico y de distribucion de la familia Coleophoridae Hubner, [1825] (Insecta: Lepidoptera). Boletin de Sanidad Vegetal, Fuera de Serie 12, 1 - 196."]}
Aspects of ${}^3$He and the Standard Electroweak Model
Creators: name: Volovik, G. E.
name: Vachaspati, Tanmay
Publisher: name: arXiv
Year: 1995
Subjects: subject: Condensed Matter (cond-mat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We describe certain aspects of ${}^3He$ and compare them to related aspects of the standard electroweak model of particle physics. We note various similarities in the order parameter structure, defect structure, interactions with fermions and anomalies in the two systems. Many issues in the condensed matter literature that are often confusing to the particle physics reader and vice versa are clarified.
description: 60 pages + 15 figures; LaTeX
A simple model for transverse energy distribution in heavy ion collisions
Creators: name: Lietava, R.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A simple geometrical model (often quoted in literature as the Glauber model) of heavy ion collisions is recapitulated. It is shown that the transverse energy distribution of heavy ion collisions follow the geometry of the collision. An extension of the model to include rapidity and transverse mass particle spectra is discussed.
description: 7 pages
Policy Shocks and Wage Rigidities: Empirical Evidence from Regional Effects of National Shocks
Creators: name: De Ridder, M.
name: Pfajfar, D.
Publisher: name: Faculty of Economics
Year: 2017
Subjects: Wage Rigidity
Monetary Policy
Tax Multipliers
U.S. states

description: This paper studies the effect of wage rigidities on the transmission of fiscal and monetary policy shocks. We calculate downward wage rigidities across U.S. states using the Current Population Survey. These estimates are used to explain differences in the state-level economic effects of identical national shocks in interest rates and taxes. In line with the role of sticky wages in New Keynesian models, we find that contractionary monetary policy and tax shocks increase unemployment and decrease economic activity in rigid states considerably more than in flexible states. We also find larger and more persistent effects of monetary and tax policy shocks for states where the ratio between minimum and median wage is higher and for states that do not have right-to-work legislation.
Monte Carlo Program KoralW 1.42 for All Four-Fermion Final States in e+e- Collisions
Creators: name: Jadach, S.
name: Placzek, W.
name: Skrzypek, M.
name: Ward, B. F. L.
name: Was, Z.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The Monte Carlo program KoralW version 1.42 is presented. It generates all four-fermion final states with multibranch dedicated Monte Carlo pre-samplers and complete, massive, Born matrix elements. The presamplers cover the entire phase space. Multiphoton bremsstrahlung is implemented in the ISR approximation within the YFS formulation with the O(alpha**3) leading-log matrix element. The anomalous WWV couplings are implemented in CC03 approximation. The standard decay libraries (JETSET, PHOTOS, TAUOLA) are interfaced. The semi-analytical CC03-type code KorWan for differential and total cross-sections is included.