cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Analysis for Lorentzian conformal field theories through sine-square deformation
Creators: name: Liu, Xun
name: Tada, Tsukasa
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We reexamine two-dimensional Lorentzian conformal field theory using the formalism previously developed in a study of sine-square deformation of Euclidean conformal field theory. We construct three types of Virasoro algebra. One of them reproduces the result by Lüscher and Mack, while another type exhibits the divergence in the central charge term. The other leads the continuous spectrum and contains no closed time-like curve in the system.
title: Monetary Policy and Government Debt Dynamics Without Commitment
Creators: name: Matveev, Dmitry
Publisher: name: Bank of Canada
Year: 2019

description: I show that maturity considerations affect the optimal conduct of monetary and fiscal policy during a period of government debt reduction. I consider a New Keynesian model and study a dynamic game of monetary and fiscal policy authorities without commitment, characterizing the incentives that drive the choice of interest rate.

description: Je démontre que l’échéance des titres de dette publique influe sur la conduite optimale des politiques monétaire et budgétaire en période de réduction de la dette publique. À l’aide d’un modèle de type néokeynésien, j’étudie un jeu dynamique dans lequel il y a absence d’engagement des autorités monétaire et budgétaire, et dans lequel je caractérise les incitations qui déterminent le choix des taux d’intérêt.
Sum Rules and Ward Identities in the Kondo Lattice
Creators: name: Coleman, P.
name: Paul, I.
name: Rech, J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We derive a generalized Luttinger-Ward expression for the Free energy of a many body system involving a constrained Hilbert space. In the large $N$ limit, we are able to explicity write the entropy as a functional of the Green's functions. Using this method we obtain a Luttinger sum rule for the Kondo lattice. One of the fascinating aspects of the sum rule, is that it contains two components, one describing the heavy electron Fermi surface, the other, a sea of oppositely charged, spinless fermions. In the heavy electron state, this sea of spinless fermions is completely filled and the electron Fermi surface expands by one electron per unit cell to compensate the positively charged background, forming a ``large'' Fermi surface. Arbitrarily weak magnetism causes the spinless Fermi sea to annihilate with part of the Fermi sea of the conduction electrons, leading to a small Fermi surface. Our results thus enable us to show that the Fermi surface volume contracts from a large, to a small volume at a quantum critical point. However, the sum rules also permit the possible formation of a new phase, sandwiched between the antiferromagnet and the heavy electron phase, where the charged spinless fermions develop a true Fermi surface.
description: 24 pages, 4 figures. Version two contains a proof of the "Entropy formula" which connects the entropy directly to the Green's functions. Version three contains corrections to typos and a more extensive discussion of the physics at finite N
You Can't Always Get What You Want: The Impact of Prior Assumptions on Interpreting GW190412
Creators: name: Zevin, Michael
name: Berry, Christopher P. L.
name: Coughlin, Scott
name: Chatziioannou, Katerina
name: Vitale, Salvatore
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: GW190412 is the first observation of a black hole binary with definitively unequal masses. GW190412's mass asymmetry, along with the measured positive effective inspiral spin, allowed for inference of a component black hole spin: the primary black hole in the system was found to have a dimensionless spin magnitude between 0.17 and 0.59 (90% credible range). We investigate how the choice of priors for the spin magnitudes and tilts of the component black holes affect the robustness of parameter estimates for GW190412, and report Bayes factors across a suite of prior assumptions. Depending on the waveform family used to describe the signal, we find either marginal to moderate (2:1-6:1) or strong ($\gtrsim$ 20:1) support for the primary black hole being spinning compared to cases where only the secondary is allowed to have spin. We show how these choices influence parameter estimates, and find the asymmetric masses and positive effective inspiral spin of GW190412 to be qualitatively, but not quantitatively, robust to prior assumptions. Our results highlight the importance of both considering astrophysically motivated or population-based priors in interpreting observations and considering their relative support from the data.
description: 12 pages, 2 figures, 1 table, published in ApJL
A possible examination method for observing agriculture
Creators: name: Nabradi, Andras
name: Nagymihaly, Kornelia Ficzere
name: Nabradi, Andras
name: Nagymihaly, Kornelia Ficzere
Publisher: name: Unknown
Year: 2008
Subjects: subject: Research Methods/ Statistical Methods
subject: longitudinal examination
subject: method
subject: application

description: On the basis of our examinations we have come to the conclusion that longitudinal examinations are the simplest and most up-to-date methods as well as the most cost-efficient ones to follow the decision-making, preparatory data collecting, processing and analysing opportunities serving the sustainability of agriculture better and better together with tracing down the feedback about the decisions to see if the given measure has really resulted in reaching the objectives. The method was proved to be able to supply both micro-and macro-level information in the desired breakdown, groupings and systems of connections. The development successive (panel) examination that we applied can serve as the basis of making decisions affecting huge areas by means of total listings and breakdowns. Moreover, it can also control their effects and aftermaths. We suggest the implementation of introducing this data collecting and information supplying method declared to be desirable also by the European Union. Implementation could be eased to a great extent by the fact that it is available for the organisations, as well.
title: The Distributional Effects of Conventional Monetary Policy and Quantitative Easing: Evidence from an Estimated DSGE Model
Creators: name: Hohberger, Stefan
name: Priftis, Romanos
name: Vogel,  Lukas
Publisher: name: Bank of Canada
Year: 2019

description: This paper compares the distributional effects of conventional monetary policy and quantitative easing (QE) within an estimated open-economy DSGE model of the euro area.

description: Dans cette étude, nous comparons les effets redistributifs des mesures de politique monétaire traditionnelles et des assouplissements quantitatifs dans le cadre d’un modèle d’équilibre général dynamique et stochastique en économie ouverte estimé pour la zone euro.
Columbimenopon modestus Ansari 1951
Creators: name: Naz, Saima
name: Najer, Tomas
name: Gustafsson, Daniel R.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Phthiraptera
Menoponidae
Columbimenopon
Columbimenopon modestus

description: Columbimenopon modestus Ansari, 1951
 Columbimenopon modestus Ansari, 1951: 131, figs 1a–e.
 Current status: Hohorstiella modesta (Ansari, 1951); Hopkins & Clay 1953: 439.
 Type host: Streptopelia decaocto decaocto (Frivaldszky).
 Type locality: Faisalabad [as Lyallpur, Punjab], Pakistan.
 Type material: Holotype female (labelled as “ TYPE ”) and allotype male deposited in the NHML [slide NHML010657240].
description: Published as part of Naz, Saima, Najer, Tomas & Gustafsson, Daniel R., 2020, An annotated list of the species of lice (Insecta: Phthiraptera) described by Mohammad A. - R. Ansari, pp. 401-448 in Zootaxa 4809 (3) on page 408, DOI: 10.11646/zootaxa.4809.3.1, http://zenodo.org/record/3936752
Towards Machine Learning Analytics for Jet Substructure
Creators: name: Kasieczka, Gregor
name: Marzani, Simone
name: Soyez, Gregory
name: Stagnitto, Giovanni
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The past few years have seen a rapid development of machine-learning algorithms. While surely augmenting performance, these complex tools are often treated as black-boxes and may impair our understanding of the physical processes under study. The aim of this paper is to move a first step into the direction of applying expert-knowledge in particle physics to calculate the optimal decision function and test whether it is achieved by standard training, thus making the aforementioned black-box more transparent. In particular, we consider the binary classification problem of discriminating quark-initiated jets from gluon-initiated ones. We construct a new version of the widely used N-subjettiness, which features a simpler theoretical behaviour than the original one, while maintaining, if not exceeding, the discrimination power. We input these new observables to the simplest possible neural network, i.e. the one made by a single neuron, or perceptron, and we analytically study the network behaviour at leading logarithmic accuracy. We are able to determine under which circumstances the perceptron achieves optimal performance. We also compare our analytic findings to an actual implementation of a perceptron and to a more realistic neural network and find very good agreement.
description: 32 pages, 9 figures; v2 brings extra clarifications, as accepted by JHEP
Spontaneous color polarization as a modus originis of the dynamic aether
Creators: name: Balakin, Alexander B.
name: Kiselev, Gleb B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We suggest the phenomenological model of emergence of the dynamic aether as a result of decay of the SU(N) symmetric field configuration containing the multiplet of vector fields. The scenario of the transition to the dynamic aether, which is characterized by one unit timelike vector field associated with the aether velocity, is based on the idea of spontaneous color polarization analogous to the spontaneous electric polarization in ferroelectric materials. The mechanism of spontaneous color polarization is described in the framework of anisotropic cosmological model of the Bianchi-I type; it involves into consideration the idea of critical behavior of the eigenvalues of the tensor of color polarization in the course of the Universe accelerated expansion. The interim stage of transition from the color aether to the canonic dynamic aether takes the finite period of time, the duration of which is predetermined by the phenomenologically introduced critical value of the expansion scalar.
description: 12 pages, 0 fugures
title: Inequality in Parental Transfers, Borrowing Constraints and Optimal Higher Education Subsidies
Creators: name: Park, Youngmin
Publisher: name: Bank of Canada
Year: 2019

description: This paper studies optimal education subsidies when parental transfers are unequally distributed across students and cannot be publicly observed. After documenting substantial inequality in parental transfers among US college students with similar family resources, I examine its implications for how the education subsidy should vary with schooling level and family resources to minimize inefficiencies generated by borrowing constraints.

description: Dans ce document de travail, je me penche sur le subventionnement optimal des études postsecondaires dans un contexte marqué par une répartition inégale des transferts parentaux dans la population étudiante et par l’absence de dossiers publics vérifiables à ce sujet. Je rends d’abord compte de la disparité considérable des transferts parentaux chez les étudiants américains provenant de familles aux ressources similaires.
title: Macroprudential Policy with Capital Buffers
Creators: name: Schroth, Josef
Publisher: name: Bank of Canada
Year: 2019

description: The countercyclical capital buffer is part of Basel III, the set of regulatory measures developed in response to the financial crisis of 2007–09. This study focuses on how time-varying capital buffers can address inefficiencies in economies with endogenous financial crises.

description: Les réserves (ou « volants ») de fonds propres contracycliques sont l’une des composantes de « Bâle III », l’ensemble de mesures réglementaires élaborées en réponse à la crise financière de 2007-2009. Cette étude se penche sur la capacité de réserves de fonds propres variables dans le temps de réduire les inefficiences dans des économies caractérisées par des crises financières endogènes.
How do proteins search for their specific sites on coiled or globular DNA
Creators: name: Hu, Tao
name: Grosberg, A. Yu.
name: Shklovskii, B. I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Biomolecules (q-bio.BM)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: It is known since the early days of molecular biology that proteins locate their specific targets on DNA up to two orders of magnitude faster than the Smoluchowski 3D diffusion rate. It was the idea due to Delbruck that they are non-specifically adsorbed on DNA, and sliding along DNA provides for the faster 1D search. Surprisingly, the role of DNA conformation was never considered in this context. In this article, we explicitly address the relative role of 3D diffusion and 1D sliding along coiled or globular DNA and the possibility of correlated re-adsorbtion of desorbed proteins. We have identified a wealth of new different scaling regimes. We also found the maximal possible acceleration of the reaction due to sliding, we found that the maximum on the rate-versus-ionic strength curve is asymmetric, and that sliding can lead not only to acceleration, but in some regimes to dramatic deceleration of the reaction.
description: 16 pages, 5 figures
Cuculiphilus (Picusphilus) tirkhan Ansari 1951
Creators: name: Naz, Saima
name: Najer, Tomas
name: Gustafsson, Daniel R.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Phthiraptera
Philopteridae
Cuculiphilus
Cuculiphilus tirkhan

description: Cuculiphilus (Picusphilus) tirkhan Ansari, 1951
 Cuculiphilus (Picusphilus) tirkhan Ansari, 1951: 164, figs 15a–h.
 Current status: Colpocephalum tirkhan (Ansari, 1951); Hopkins & Clay 1953: 436; Price 1964: 167, fig. 9.
 Type host: Picus squamatus squamatus Vigors.
 Type locality: Kullu, India [as Kulu, Kangra Valley, Panjab].
 Type material: Holotype female deposited in the NHML [slide NHML010655710]. The label of this slide reads that both the holotype and the allotype male are mounted together, but only the holotype is actually on the slide. Also, three paratypes (one male and two females) are in the NHML [slide NHML010655711]. We conclude that the single male paratype is the specimen designated as allotype by Ansari (1951: 165).
description: Published as part of Naz, Saima, Najer, Tomas & Gustafsson, Daniel R., 2020, An annotated list of the species of lice (Insecta: Phthiraptera) described by Mohammad A. - R. Ansari, pp. 401-448 in Zootaxa 4809 (3) on page 408, DOI: 10.11646/zootaxa.4809.3.1, http://zenodo.org/record/3936752
Extragalactic background light models and GeV-TeV observation of blazars
Creators: name: Singh, K. K.
name: Meintjes, P. J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In this work, we use two different methods to determine the opacity of the TeV gamma-rays caused by the extragalactic background light (EBL) via e-e+ production due to photon-photon interaction. The first method, Model-Dependent Approach, uses various EBL models for estimating the opacity as a function of the redshift and energy of the TeV photons. The second method, Model-Independent Approach, relies on using the simultaneous observations of blazars in the MeV-GeV energy range from the Fermi-LAT and in the TeV band from the ground-based gamma-ray telescopes. We make the underline assumption that the extrapolation of the LAT spectrum of blazars to TeV energies is either a good estimate or an upper limit for the intrinsic TeV spectrum of a source. We apply this method on the simultaneous observations of a few blazars at different redshifts to demonstrate a comparative study of six prominent EBL models. Opacities of the TeV photons predicted by the model-independent approach are systematically larger than the ones estimated from the model-dependent method. Therefore, the gamma-ray observations of blazars can be used to set a strict upper limit on the opacity of the Universe to the TeV photons at a given redshift.
description: 4 Figures, 4 Tables, Accepted for Publication in NRIAG JOURNAL OF ASTRONOMY AND GEOPHYSICS, Abstract shortened
Coping with ex ante Regulations and ex post Liability Rules for Planting Bt-maize – The Portuguese Experience
Creators: name: Skevas, Theodoros
name: Fevereiro, P.
name: Wesseler, Justus
name: Skevas, Theodoros
name: Fevereiro, P.
name: Wesseler, Justus
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Coexistence
subject: Bt-maize
subject: Portugal

description: This study investigates the attitude and practices of GM and non-GM maize farmers in Portugal. Thirty seven GM maize farmers were interviewed representing 22.5% of the total number of GM maize notifications in the country. Additionally, 66 non-GM maize farmers were surveyed in an attempt to investigate their opinion on the Bt technology, its viability and its future. The most interesting finding is that almost half of all the surveyed maize farmers (GM and non-GM) stated that the ex ante regulations are rigid and difficult to apply. On the contrary, the ex post tort liability rules are very clear and provide the appropriate security for the continuation of the GM maize cultivation.
New developments in fruit and vegetables consumption in the period 1999-2004 in Denmark - A quantile regression approach
Creators: name: Hansen, Aslak H.
name: Hansen, Aslak H.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Quantile regression
subject: Counterfactual decomposition
subject: Expenditure distribution

description: The development in the consumption of fruit and vegetables in the period 1999-2004 in Denmark was investigated using quantile regression and two previously overlooked problems were identified. First, the change in the ten percent quantile samples decreased. This could have been caused by changes in the distribution of covariates. Therefore, the counterfactual decomposition of Machado and Mata (2005) was used and the methodology established that the change was not caused by alterations in the distribution of covariates but by changes in the coefficients and therefore a change in behaviour. The reason for this development is probably due to low income groups becoming relatively more income constrained since the gap to the high income group have grown considerably at the lower end of the distribution. The second problem was that the education inducing gap became larger in 2004 indicating that uneducated people have not responded as well to the health related information flow. These results suggest that information campaigns have not been as successful as previously thought; more importantly the results indicate that information campaigns alone will do a poor job in solving the identified problems. Other instruments targeting uneducated and low income groups more directly are needed. Instruments which make fruit and vegetables relatively cheaper would undoubtedly have an effect on low income groups and send a strong signal to the uneducated population.
Internal Shocks in the Magnetic Reconnection Jet in Solar Flares: Multiple Fast Shocks Created by the Secondary Tearing Instability
Creators: name: Tanuma, S.
name: Shibata, K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Space solar missions such as {\it Yohkoh} and {\it RHESSI} observe the hard X- and gamma-ray emission from energetic electrons in impulsive solar flares. Their energization mechanism, however, is unknown. In this paper, we suggest that the internal shocks are created in the reconnection jet and that they are possible sites of particle acceleration. We examine how magnetic reconnection creates the multiple shocks by performing two-dimensional resistive magnetohydrodynamic simulations. In this paper, we use a very small grid to resolve the diffusion region. As a result, we find that the current sheet becomes thin due to the tearing instability, and it collapses to a Sweet-Parker sheet. The thin sheet becomes unstable to the secondary tearing instability. Fast reconnection starts by the onset of anomalous resistivity immediately after the secondary tearing instability. During the bursty, time-dependent magnetic reconnection, the secondary tearing instability continues in the diffusion region where the anomalous resistivity is enhanced. As a result, many weak shocks are created in the reconnection jet. This situation produces turbulent reconnection. We suggest that multiple fast shocks are created in the jet and that the energetic electrons can be accelerated by these shocks.
description: 12 pages including 4 figures, AASTEX. submitted to ApJL, Papre including figures and animation are available at http://www.kwasan.kyoto-u.ac.jp/~tanuma/ApJL2005.html
Are EU spatial ex ante coexistence regulations proportional?
Creators: name: Demont, Matty
name: Daems, W.
name: Dillen, Koen
name: Mathijs, Erik
name: Sausse, C.
name: Tollens, Eric
name: Demont, Matty
name: Daems, W.
name: Dillen, Koen
name: Mathijs, Erik
name: Sausse, C.
name: Tollens, Eric
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: policy analysis
subject: GIS
subject: shadow factor

description: The EU is currently struggling to implement coherent coexistence regulations on genetically modified (GM) and non-GM crops in all member states. While it stresses that any approach needs to be “proportionate to the aim of achieving coexistence”, very few studies have actually attempted to assess whether the proposed spatial ex ante coexistence regulations (SEACERs) satisfy this proportionality condition. In this article, we define proportionality as a functional relationship which is weakly increasing in the incentives for coexistence. We propose a spatial framework based on an existing landscape and introduce the new concept of shadow factor as a measure for the opportunity costs induced by SEACERs. This enables comparing the proportionality of (i) rigid SEACERs which are based on large isolation distances imposed on GM farmers versus (ii) flexible SEACERs based on pollen barrier agreements between neighboring farmers. Our theoretical and empirical findings argue for flexibility as rigid SEACERs violate the proportionality condition and, hence, are not consistent with the objectives of the EU.
Tunable magnon-magnon coupling in synthetic antiferromagnets
Creators: name: Sud, A.
name: Zollitsch, C. W.
name: Kamimaki, A.
name: Dion, T.
name: Khan, S.
name: Iihama, S.
name: Mizukami, S.
name: Kurebayashi, H.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this work, we study magnon-magnon coupling in synthetic antiferromagnets (SyAFs) using microwave spectroscopy at room temperature. Two distinct spin-wave modes are clearly observed and are hybridised at degeneracy points. We provide a phenomenological model that captures the coupling phenomena and experimentally demonstrate that the coupling strength is controlled by the out-of-plane tilt angle as well as the interlayer exchange field. We numerically show that a spin-current mediated damping in SyAFs plays a role in influencing the coupling strength.
description: 13 pages, 11 figures(including supplementary)
title: Inflation Targeting and Liquidity Traps Under Endogenous Credibility
Creators: name: Hommes, Cars
name: Lustenhouwer, Joep
Publisher: name: Bank of Canada
Year: 2019

description: Policy implications are derived for an inflation-targeting central bank, whose credibility is endogenous and depends on its past ability to achieve its  targets. This is done in a New Keynesian framework with heterogeneous and  boundedly rational expectations.

description: Nous dégageons des scénarios sur la conduite de la politique monétaire pour une banque centrale dotée d’un régime de ciblage de l’inflation. La crédibilité de la banque est endogène et dépend de sa capacité d’atteindre ses cibles dans le passé. Nous utilisons un cadre nouveau keynésien aux anticipations hétérogènes dont la rationalité est limitée.
Levy flights in steep potential wells: Langevin modeling versus direct response to energy landscapes
Creators: name: Garbaczewski, P.
name: Zaba, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Spectral Theory (math.SP)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We investigate the non-Langevin relative of the Lévy-driven Langevin random system, under an assumption that both systems share a common (asymptotic, stationary, steady-state) target pdf. The relaxation to equilibrium in the fractional Langevin-Fokker-Planck scenario results from an impact of confining conservative force fields on the random motion. A non-Langevin alternative has a built-in direct response of jump intensities to energy (potential) landscapes in which the process takes place. We revisit the problem of Lévy flights in superharmonic potential wells, with a focus on the extremally steep well regime, and address the issue of its (spectral) "closeness" to the Lévy jump-type process confined in a finite enclosure with impenetrable (in particular reflecting) boundaries. The pertinent random system "in a box/interval" is expected to have a fractional Laplacian with suitable boundary conditions as a legitimate motion generator. The problem is, that in contrast to amply studied Dirichlet boundary problems, a concept of reflecting boundary conditions and the path-wise implementation of the pertinent random process in the vicinity of (or sharply at) reflecting boundaries are not unequivocally settled for Lévy processes. This ambiguity extends to fractional motion generators, for which nonlocal analogs of Neumann conditions are not associated with path-wise reflection scenarios at the boundary, respecting the impenetrability assumption.
description: 25 pp, 7 Figs, new references added
Table S1.xlsx
Creators: name: Li, Guo-Sheng
name: Chen, Gang
name: Liu, Jun
name: Tang, Deng
name: Zheng, Jin-Hua
name: Luo, Jing
name: Jin, Mei-Hua
name: Lu, Hua-Song
name: Bao, Chong-Xi
name: Tian, Jia
name: Deng, Wu-Sheng
name: Fu, Jing-Wei
name: Feng, Yue
name: Zeng, Neng-Yong
name: Zhou, Hua-Fu
name: Kong, Jin-Liang
Publisher: name: figshare
Year: 2021
Subjects: subject: 60102 Bioinformatics
subject: FOS: Computer and information sciences

description: Table S1. Clinical information of samples included in this study.
title: Interconnected Banks and Systemically Important Exposures
Creators: name: Roncoroni, Alan
name: Battiston, Stefano
name: D’Errico, Marco
name: Halaj, Grzegorz
name: Kok, Christoffer
Publisher: name: Bank of Canada
Year: 2019

description: How do banks' interconnections in the euro area contribute to the vulnerability of the banking system? We study both the direct interconnections (banks lend to each other) and the indirect interconnections (banks are exposed to similar sectors of the economy). These complex linkages make the banking system more vulnerable to contagion risks.

description: Comment les liens d’interdépendance entre les banques de la zone euro contribuent-ils à la vulnérabilité du système bancaire? Nous étudions les interconnexions directes (prêts entre les banques) et indirectes (exposition des banques à des secteurs semblables de l’économie). Ces liens complexes rendent le système bancaire plus vulnérable aux risques de contagion.
Vasmer, R.: Chronologie der arabischen Statthalter von Armenien unter den Abbasiden, von as-Saffach bis zur Krönung Aschots I., 750-887
Creators: name: Taeschner, F.
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 30 Nr. 1 (1933): Oriens christianus, Band 30, Heft 1
Dynamical generation of a nontrivial index on the fuzzy 2-sphere
Creators: name: Aoki, Hajime
name: Iso, Satoshi
name: Maeda, Toshiharu
name: Nagao, Keiichi
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the previous paper hep-th/0312199 we studied the 't Hooft-Polyakov (TP) monopole configuration in the U(2) gauge theory on the fuzzy 2-sphere and showed that it has a nonzero topological charge in the formalism based on the Ginsparg-Wilson relation. In this paper, by showing that the TP monopole configuration is stabler than the U(2) gauge theory without any condensation in the Yang-Mills-Chern-Simons matrix model, we will present a mechanism for dynamical generation of a nontrivial index. We further analyze the instability and decay processes of the U(2) gauge theory and the TP monopole configuration.
description: Latex2e, 30 pages, 4 figures, the topological charge for a monopole configuration is corrected, reference added, the final version to appear in Physical Review D (the typos mentioned in the erratum are corrected)
"Organic District": identification methodology and agricultural policy objectives
Creators: name: Pancino, Barbara
name: Franco, Silvio
name: Marino, Davide
name: Pancino, Barbara
name: Franco, Silvio
name: Marino, Davide
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agricultural and Food Policy
subject: Environmental Economics and Policy
subject: organic district
subject: agro-environmental policies
subject: organic agriculture

description: Italy, unlike other countries, has included the territorial dimension in the recent interventions and regulations of organic agriculture, introducing explicitly the concept of “organic district”. It is defined as a local productive system with a high agricultural vocation where organic production and processing practices are predominant. The main object of this new subject is to promote the diffusion of organic agriculture focusing on the productive and environmental territorial characteristic. In this poster, after a general definition of the organic districts, as they are introduced in the Italian regulations, a method for their identification in a region is proposed. In the final part, some considerations about the role of the organic district within the general framework of agro-environmental policies are developed.
Valley-selective energy transfer between quantum dots in atomically thin semiconductors
Creators: name: Baimuratov, Anvar S.
name: Högele, Alexander
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In monolayers of transition metal dichalcogenides the nonlocal nature of the effective dielectric screening leads to large binding energies of excitons. Additional lateral confinement gives rise to exciton localization in quantum dots. By assuming parabolic confinement for both the electron and the hole, we derive model wave functions for the relative and the center-of-mass motions of electron-hole pairs, and investigate theoretically resonant energy transfer among excitons localized in two neighboring quantum dots. We quantify the probability of energy transfer for a direct-gap transition by assuming that the interaction between two quantum dots is described by a Coulomb potential, which allows us to include all relevant multipole terms of the interaction. We demonstrate the structural control of the valley-selective energy transfer between quantum dots.
Policies for the regulation of coexistence between GM and conventional crops
Creators: name: Ceddia, M. Graziano
name: Bartlett, Mark
name: Perrings, Charles
name: Ceddia, M. Graziano
name: Bartlett, Mark
name: Perrings, Charles
Publisher: name: Unknown
Year: 2008
Subjects: subject: Crop Production/Industries
subject: coexistence
subject: pollen-mediated gene flow
subject: Monte Carlo simulation

description: Pollen-mediated gene flow is one of the main concerns associated with the introduction of genetically modified (GM) crops, since growers of GM varieties normally do not take into account its possible impact on conventional and organic growers therefore generating negative externalities. Should a premium for non-GM varieties emerge on the market, 'contamination' with GM pollen would generate a revenue loss for growers of non-GM varieties. The existence of such externalities has led the European Union (EU) to put forward the concept of coexistence in order to guarantee farmers' freedom to plant both conventional and GM varieties without generating economic losses to conventional farmers. The first part of this paper develops a simple economic model analysing the problem of pollen-mediated gene flow as a particular kind of production externality. The model, although simple, provides useful insights into the policy needed to regulate coexistence. Since pollen-mediated gene flow is distance-dependent, the externalities will depend on the spatial structure of GM adoption in the landscape. The second part of the paper, taking GM herbicide tolerant oilseed rape (Brassica napus) as a model crop, uses a Monte Carlo experiment to generate data and then estimate the effect of some important policy variables (i.e. number of GM and conventional fields in the landscape, width of buffer zones and spatial aggregation) on the magnitude of the externality associated with pollen-mediated gene flow. Our results show that buffer areas on conventional fields are more effective than those on GM fields and that the degree of spatial aggregation exerts the largest marginal effect on the externality to conventional growers. The implications of the results for the coexistence policies in the EU are then discussed.
Binomial-Poisson entropic inequalities and the M/M/$\infty$ queue
Creators: name: Chafai, Djalil
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 47D07, 60J60, 94A17, 26D15, 46E99, 60J27, 60J75

description: This article provides entropic inequalities for binomial-Poisson distributions, derived from the two point space. They appear as local inequalities of the M/M/$\infty$ queue. They describe in particular the exponential dissipation of $Φ$-entropies along this process. This simple queueing process appears as a model of ``constant curvature'', and plays for the simple Poisson process the role played by the Ornstein-Uhlenbeck process for Brownian Motion. Some of the inequalities are recovered by semi-group interpolation. Additionally, we explore the behaviour of these entropic inequalities under a particular scaling, which sees the Ornstein-Uhlenbeck process as a fluid limit of M/M/$\infty$ queues. Proofs are elementary and rely essentially on the development of a ``$Φ$-calculus''.
An Impact Study of the Economic Partnership Agreements (EPAs) in the Six ACP Regions
Creators: name: Fontagne, Lionel
name: Laborde, David
name: Mitaritonna, Cristina
name: Fontagne, Lionel
name: Laborde, David
name: Mitaritonna, Cristina
Publisher: name: Unknown
Year: 2008
Subjects: subject: International Relations/Trade
subject: Preferential Trade Agreements
subject: Africa
subject: EPAs
subject: Partial Equilibrium Simulations

description: This article intends to present a very detailed analysis of the trade-related aspects of Economic Partnership Agreements (EPAs) negotiations. We use a dynamic partial equilibrium model – focusing on the demand side – at the HS6 level (covering 5,113 HS6 products). Two alternative lists of sensitive products are constructed, one giving priority to the agricultural sectors, the other focusing on tariff revenue preservation. In order to be WTO compatible, EPAs must translate into 90 percent of bilateral trade fully liberalised. We use this criterion to simulate EPAs for each negotiating regional block. ACP exports to the EU are forecast to be 10 percent higher with the EPAs than under the GSP/EBA option. On average ACP countries are forecast to lose 70 percent of tariff revenues on EU imports in the long run. Yet imports from other regions of the world will continue to provide tariff revenues. Thus when tariff revenue losses are computed on total ACP imports, losses are limited to 26 percent on average in the long run and even 19 percent when the product lists are optimised. The final impact on the economy depends on the importance of tariffs in government revenue and on potential compensatory effects. However this long term and less visible effect will mainly depend on the capacity of each ACP country to reorganise its fiscal base.
Cuculiphilus (Ululoecus) panjabensis Ansari 1951
Creators: name: Naz, Saima
name: Najer, Tomas
name: Gustafsson, Daniel R.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Phthiraptera
Philopteridae
Cuculiphilus
Cuculiphilus panjabensis

description: Cuculiphilus (Ululoecus) panjabensis Ansari, 1951
 Cuculiphilus (Ululoecus) panjabensis Ansari, 1951: 160, figs 14a–d.
 Current status: Kurodaia (Conciella) panjabensis (Ansari, 1951): Price et al. 2003: 114.
 Type host: Athene brama indica (Franklin).
 Type locality: Faisalabad [as Lyallpur, Punjab], Pakistan.
 Type material: Holotype female [slide NHML010657769] and one paratype female [slide NHML010657770] deposited in the NHML. The species name is incorrectly written as “ punjabensis ” on both slides.
description: Published as part of Naz, Saima, Najer, Tomas & Gustafsson, Daniel R., 2020, An annotated list of the species of lice (Insecta: Phthiraptera) described by Mohammad A. - R. Ansari, pp. 401-448 in Zootaxa 4809 (3) on page 408, DOI: 10.11646/zootaxa.4809.3.1, http://zenodo.org/record/3936752
New states of matter with fine-tuned interactions: quantum droplets and dipolar supersolids
Creators: name: Böttcher, Fabian
name: Schmidt, Jan-Niklas
name: Hertkorn, Jens
name: Ng, Kevin S. H.
name: Graham, Sean D.
name: Guo, Mingyang
name: Langen, Tim
name: Pfau, Tilman
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Quantum fluctuations can stabilize Bose-Einstein condensates (BEC) against the mean-field collapse. Stabilization of the condensate has been observed in quantum degenerate Bose-Bose mixtures and dipolar BECs. The fine-tuning of the interatomic interactions can lead to the emergence of two new states of matter: liquid-like selfbound quantum droplets and supersolid crystals formed from these droplets. We review the properties of these exotic states of matter and summarize the experimental progress made using dipolar quantum gases and Bose-Bose mixtures. We conclude with an outline of important open questions that could be addressed in the future.
Tunable macroscale structural superlubricity in two-layer graphene via strain engineering
Creators: name: Androulidakis, Charalampos
name: Koukaras, Emmanuel N.
name: Paterakis, George
name: Trakakis, George
name: Galiotis, Costas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Achieving structural superlubricity in graphitic samples of macro-scale size is particularly challenging due to difficulties in sliding large contact areas of commensurate stacking domains. Here, we show the presence of macro-scale structural superlubricity between two randomly stacked graphene layers produced by both mechanical exfoliation and CVD. By measuring the shifts of Raman peaks under strain we estimate the values of frictional interlayer shear stress (ILSS) in the superlubricity regime (mm scale) under ambient conditions. The random incommensurate stacking, the presence of wrinkles and the mismatch in the lattice constant between two graphene layers induced by the tensile strain differential are considered responsible for the facile shearing at the macroscale. Furthermore, molecular dynamic simulations show that the stick-slip behaviour does not hold for achiral shearing directions for which the ILSS decreases substantially, supporting the experimental observations. Our results pave the way for overcoming several limitations in achieving macroscale superlubricity in graphene.
Quantifying non-tariff measures in international agricultural trade: a tariff equivalent of technical barriers to trade on African horticultural exports to the European markets
Creators: name: Nimenya, Nicodeme
name: Frahan, Bruno Henry De
name: Ndimira, Pascal-Firmin
name: Nimenya, Nicodeme
name: Frahan, Bruno Henry De
name: Ndimira, Pascal-Firmin
Publisher: name: Unknown
Year: 2008
Subjects: subject: International Relations/Trade
subject: Armington elasticity of substitution
subject: price-wedge method
subject: tariff-equivalent

description: Fresh food and agricultural products from sub- Saharan Africa meet few tariff barriers because of preferential market access granted to ACP countries through Lomé and Cotonou Act. However, non-tariff barriers are still serious impediments to trade. This paper focuses more specifically on technical barriers to trade (TBT) and sanitary and phytosanitary measures (SPS) on horticultural exports from Kenya and Zambia to France, Germany, the Netherlands and United-Kingdom. Using an extension of price-wedge method that takes into account imperfect substitution (on demand side) and differences in factor endowments (on supply side), we provide a tariff-equivalent of a wide range of TBT. Preliminary results show that the tariff-equivalent of TBT is very high for Kenyan green beans exports (more than 56%) while it is low for Kenya’s exports of peas and avocados and Zambian exports of peas (less than 10%). However, there are no large differences between EU importing countries.
QCD sum rules for the anti-charmed pentaquark
Creators: name: Sarac, Yasemin
name: Kim, Hungchong
name: Lee, Su Houng
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a QCD sum rule analysis for the anti-charmed pentaquark state with and without strangeness. While the sum rules for most of the currents are either non-convergent or dominated by the $DN$ continuum, the one for the non-strange pentaquark current composed of two diquarks and an antiquark, is convergent and has a structure consistent with a positive parity pentaquark state after subtracting out the $DN$ continuum contribution. Arguments are presented on the similarity between the result of the present analysis and that based on the constituent quark models, which predict a more stable pentaquark states when the antiquark is heavy.
description: 19 pages, 8 figures, REVTex, revised version,new figures added and references updated
The Measures and the loss - Case Study on non-tariff barriers related to veterinary export certificates in Dutch exports
Creators: name: Achterbosch, Thom J.
name: Rau, Marie-Luise
name: Achterbosch, Thom J.
name: Rau, Marie-Luise
Publisher: name: Unknown
Year: 2008
Subjects: subject: International Relations/Trade
subject: Livestock Production/Industries
subject: non-tariff measures
subject: conformity assessment
subject: animal products

description: Case study research into the mandatory veterinary requirements on Dutch exports of live animals and animal products provides empirical evidence on the trade effects of nontariff measures (NTMs). The paper discusses the analytical approach to assess how veterinary health attestation may create (temporary) obstacles for Dutch exports, what these obstacles are, and whether competing exporters in EU countries have encountered similar barriers. We have a dataset on 166 cases in 2004-06 where the process of issuing veterinary certificates for Dutch exports to non- EU destinations was disrupted. Products covered are animal-based products, live animals and feed. We use a sample of 30 cases that continued after 2006, the ‘longlasting problems’, and 39 cases that came up and got solved between 2004 and 2006, the temporary problems. The main challenge is to link the available record of recognition problems to the disruptions in exports. In order to assess trade disruptions, statistical tests of outliers and trend breaches are performed on detailed monthly trade data, and the issue of not-observed trade needs to be addressed. This raises the need to address disruption patterns around the imposition of measures in trade. The alternative patterns under examination are (i) measures that have an immediate trade impact, (ii) measures due to which trade gradually expands or reduces, and (iii) measures that divert trade to alternative export destinations. Finally, we want to examine whether the impact of veterinary health attestation on trade can be specified towards the type of trade barrier. For that, we suggest to introduce a distinction between three different types of barriers, based on whether obstacles relate to the non-conformity of products to import requirements or a failure in the conformity assessment or both.
title: A Macroprudential Theory of Foreign Reserve Accumulation
Creators: name: Arce, Fernando
name: Bengui, Julien
name: Bianchi, Javier
Publisher: name: Bank of Canada
Year: 2019

description: This paper proposes a theory of foreign reserves as macroprudential policy. We study an open-economy model of financial crises in which pecuniary externalities lead to overborrowing, and show that by accumulating international reserves, the government can achieve the constrained-efficient allocation.

description: Cette étude propose de voir les réserves de change comme un instrument de politique macroprudentielle. Nous étudions un modèle de crises financières en économie ouverte dans lequel les externalités pécuniaires engendrent de l’endettement excessif, et démontrons qu’en accumulant des réserves de change, un gouvernement peut atteindre l’allocation efficace de second rang.
Mingana, A.: Woodbrooke Studies
Creators: name: Baumstark, Anton
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 30 Nr. 1 (1933): Oriens christianus, Band 30, Heft 1