cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On the transition from Galactic to extragalactic cosmic-rays: spectral and composition features from two opposite scenarios
Creators: name: Allard, D.
name: Parizot, E.
name: Olinto, A. V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the phenomenology of cosmic-rays (CRs) at the galactic/extragalactic transition, focusing on two opposite models for the composition of the extragalactic (EG) component. Model A assumes a mixed source composition, with nuclear abundances similar to that of the low-energy CRs, while model B assumes that the EG sources accelerate only protons. We study the limits within which both scenarios can reproduce the high-energy CR data, from the point of view of the energy spectrum, each with its own interpretation of the ankle (as the GCR/EGCR transition for model A; as a pair-production dip for model B) and its own source spectrum (in E?2.3 model A; in E?2.6 or E?2.7 for model B). We then focus on the energy evolution of the high-energy CR composition and compare our predictions for two main composition-related observables (Xmax and hlnAi) with the available data, to conclude that model A is currently favoured. Uncertainties are discussed and distinctive features of the two models are identified, which should allow one to distinguish between the models in the near future when more precise measurements are available with higher-statistics experiments.
description: 26 pages 9 figures. Calculations updated using a recent IRB density and evolution (see text). Minor quantitative changes, conclusions unchanged
AN ECONOMIC ANALYSIS OF CORN YIELD, CORN PROFITABILITY, AND RISK AT THE EDGE OF THE CORN BELT
Creators: name: Chavas, Jean-Paul
name: Kim, Kwansoo
name: Lauer, Joseph G.
name: Klemme, Richard M.
name: Bland, William L.
name: Chavas, Jean-Paul
name: Kim, Kwansoo
name: Lauer, Joseph G.
name: Klemme, Richard M.
name: Bland, William L.
Publisher: name: Unknown
Year: 2001
Subjects: Crop Production/Industries

description: This study investigates the recent evolution of corn yield, with a special focus on the tradeoff between corn profitability and risk. The analysis relies on time-series data from Wisconsin experimental farms at the edge of the Corn Belt. An econometric model of corn yield, corn grain moisture, and corn profitability is specified. Both conditional means and conditional variances are estimated for different sites in Wisconsin. The empirical analysis shows the changes in corn yield and profit over time and across space. The evidence suggests that yield trends are due mostly to technical progress, with smaller effects generated by climate change. On average, corn yield and profitability have improved faster in northern Wisconsin than in the Corn Belt. However, risk has also increased faster. Results show that the choice of corn hybrid maturity makes it easier to manage risk in the Corn Belt than in northern Wisconsin.
Axion Kinetic Misalignment and Parametric Resonance from Inflation
Creators: name: Co, Raymond T.
name: Hall, Lawrence J.
name: Harigaya, Keisuke
name: Olive, Keith A.
name: Verner, Sarunas
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Axion cold dark matter from standard misalignment typically requires a decay constant $f_a~\gtrsim~10^{11}$ GeV. Kinetic misalignment and parametric resonance easily allow lower values of $f_a$ when the radial Peccei-Quinn (PQ) symmetry breaking field takes large initial values. Here, we consider the effects of inflation on kinetic misalignment and parametric resonance. We assume that the initial PQ field value is determined by quantum fluctuations, and is set by the Hubble parameter during inflation, $H_I$, and the PQ field mass. PQ field oscillations begin before or after the completion of reheating after inflation at a temperature $T_R$. We determine the range of $f_a$ and the inflationary parameters $(H_I, T_R)$ consistent with axion dark matter for a quartic potential for the PQ field. We find that $4\times 10^8$ GeV $< f_a < 10^{11}$ GeV can consistently produce axion dark matter. A significant portion of the allowed parameter space predicts rare kaon decays, $K_L \rightarrow (π^0 + \rm{missing \; energy})$, and/or suppression of structure formation on small scales.
description: 40 pages, 6 figures
Dynamic mechanical response of damaged alumina AD995
Creators: Koch, Brendan M.L.
Lo, Calvin
Li, Haoyang
Sano, Tomoko
Ligda, Jonathan
Hogan, James D.
Publisher: name: University of Alberta Library
Year: 2021

This paper explores the compressive responses of alumina ceramics subjected to various levels of pre-damage via internal cracking. Pre-damage is achieved by subjecting the samples to thermal shock. Mechanical loading is performed using a load frame for quasi-static strain rates and a Kolsky bar for dynamic strain rates. Digital image correlation is used to obtain two-dimensional strains alongside independently measured applied stresses. Data acquisition used in this study allows for the calculation of apparent elastic moduli as a function of strain. This allows for the study of change in mechanical response with strain, strain-rate, and level of pre-damage. There is a complex interaction between pre-damage and compressive loading, leading to mechanical damage accumulation being divided into three stages rather than a single damage accumulation function. It was also found that shear modulus change was more indicative of physical failure phenomena during loading than Young’s modulus or Poisson’s ratio changes.
Eine bisher unbekannte Homilie des hl. Johannes Chrysostomus in syrischer Übersetzung
Creators: name: Krüger, Paul
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 51 (1967): Oriens christianus, Band 51
ASSESSING FARMERS' ATTITUDES TOWARD RISK USING THE "CLOSING-IN" METHOD
Creators: name: Bard, Sharon K.
name: Barry, Peter J.
name: Bard, Sharon K.
name: Barry, Peter J.
Publisher: name: Unknown
Year: 2001
Subjects: Risk and Uncertainty

description: The 1996 Farm Bill and low commodity prices have regenerated interest in the impact of risk and farmers' risk attitudes on production agriculture. Previous research has used expected utility theory (EUT) and direct elicitation of utility functions (DEU) for eliciting risk attitudes. To overcome the criticism of EUT and DEU, a recently developed technique called the "closing in" method is adapted for eliciting farmers' risk attitudes. This method is applied to Illinois farmers by using a computerized decision procedure, and is validated by comparing the results to the farmers' self-assessment of their risk attitudes and score to a risk attitudinal scale.
Deformations of relative Rota-Baxter operators on Leibniz algebras
Creators: name: Tang, Rong
name: Sheng, Yunhe
name: Zhou, Yanqiu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: In this paper, we introduce the cohomology theory of relative Rota-Baxter operators on Leibniz algebras. We use the cohomological approach to study linear and formal deformations of relative Rota-Baxter operators. In particular, the notion of Nijenhuis elements is introduced to characterize trivial linear deformations. Formal deformations and extendibility of order n deformations of a relative Rota-Baxter operator are also characterized in terms of the cohomology theory.
description: arXiv admin note: text overlap with arXiv:1803.09287
g1(x) and g2(x) in the Meson Cloud Model
Creators: name: Signal, A. I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We calculate the spin dependent structure functions g1(x) and g2(x) of the proton and neutron. Our calculation uses the meson cloud model of nucleon structure and includes the effects of kinematic terms which mix transverse and longitudinal spin components. We find small corrections to the nucleon structure functions, however these are significant for the neutron.
description: 4 pages, contribution to DIS 05, Madison, Wisconsin
The food experiences and eating patterns of visually impaired and blind people
Creators: name: Bilyk, Marie Claire
Publisher: name: University of British Columbia
Year: 2009

description: The number of visually impaired and blind Canadians is rising dramatically. Some of the areas which visual impairment and blindness have been shown to impact are level of education, employment, and income. The impact of visual impairment or blindness on an individual's experience of food and eating has not been examined in the past. The purpose of this study was to view the food experiences and eating patterns of visually impaired and blind people from their perspective, and identify factors which influenced these experiences and patterns. Nine visually impaired and blind people residing in the lower mainland of British Columbia were recruited through various blindness related organizations. A semi-structured, in-depth interview was conducted with each participant. Interviews were transcribed verbatim and analyzed for relevant themes. Participants experienced blindness related obstacles when shopping for food, preparing food, and eating in restaurants. Inaccessible materials and environments also left the participants with limited access to nutrition information and physical activity. Patterns of behaviour that appeared related to these factors included a lack of variety in the participants' diets, higher than average restaurant use, limited application of nutrition knowledge, and a higher than average tendency to be outside of the recommended range for Body Mass Index (BMI). All of the participants described individually managing the obstacles they faced, but very few people expressed the opinion that society was also responsible for removing the obstacles they experienced during their encounters with food. This tendency towards individual management is hypothesized to be related to the participants' view of their blindness as an individual medical condition but not a category of social identity with social and political implications. Nutrition and blindness professionals must work together to reduce the food related obstacles faced by visually impaired and blind people. Professionals must address both individual skill development and social and structural inequities.
Learning Orientation Distributions for Object Pose Estimation
Creators: name: Okorn, Brian
name: Xu, Mengyun
name: Hebert, Martial
name: Held, David
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: For robots to operate robustly in the real world, they should be aware of their uncertainty. However, most methods for object pose estimation return a single point estimate of the object's pose. In this work, we propose two learned methods for estimating a distribution over an object's orientation. Our methods take into account both the inaccuracies in the pose estimation as well as the object symmetries. Our first method, which regresses from deep learned features to an isotropic Bingham distribution, gives the best performance for orientation distribution estimation for non-symmetric objects. Our second method learns to compare deep features and generates a non-parameteric histogram distribution. This method gives the best performance on objects with unknown symmetries, accurately modeling both symmetric and non-symmetric objects, without any requirement of symmetry annotation. We show that both of these methods can be used to augment an existing pose estimator. Our evaluation compares our methods to a large number of baseline approaches for uncertainty estimation across a variety of different types of objects.
THE FUTURE OF TEACHING UNDERGRADUATE AGRICULTURAL ECONOMICS: LIFELONG LEARNING IN AN ERA OF RAPID TECHNOLOGICAL CHANGE
Creators: name: Barkley, Andrew P.
name: Barkley, Andrew P.
Publisher: name: Unknown
Year: 2001
Subjects: Teaching/Communication/Extension/Profession

description: The need for institutions of higher education to teach students of all ages how to think, synthesize ideas, and assimilate new information has become crucial in the information age. Analytical ability is increasingly important, not only for traditional university clientele of young adult residential learners, but also for productive individuals throughout their lives. Agricultural economics teachers must invest in the acquisition of new skills and knowledge, including a willingness to change traditional teaching structures and institutions, to take full advantage of the huge opportunities and challenges of the massive changes in technology and the economy. This paper considers how well teaching programs in agricultural economics enhance student learning.
Knowledge and innovation, privileged tools of the agro-food system transition towards full sustainability
Creators: name: Van Oost, Inge
name: Vagnozzi, Anna
Publisher: name: Italian Review of Agricultural Economics
Year: 2021

description: The two strategic documents for the future of Europe post 2020 (Green Deal) and agriculture in Europe (From Farm To Fork) recognize the important role of knowledge and innovation systems in accelerating change towards food sustainability. Researchers and advisors, together with the other actors of the Agricultural Knowledge and Innovation System, have the mandate to cooperate more closely to supportall on this transition path. This includes stronger and more structured networking, increased information sharing and using digital tools to this effect. The proposed text aims to clarify how a systemic and interactive approach acts towards the above strategic aims in a more effective way, starting from what has already been achieved in this European programming period 2014-2020. A specific focus will be assigned to the EIP-AGRI initiative, to its first results and to its possible evolution.
description: Italian Review of Agricultural Economics, Vol. 75 No. 3 (2020)
DEVELOPING AND PRICING PRECIPITATION INSURANCE
Creators: name: Martin, Steven W.
name: Barnett, Barry J.
name: Coble, Keith H.
name: Martin, Steven W.
name: Barnett, Barry J.
name: Coble, Keith H.
Publisher: name: Unknown
Year: 2001
Subjects: Risk and Uncertainty

description: Production agriculture and agribusiness are exposed to many weather-related risks. Recent years have seen the emergence of an increased interest in weather-based derivatives as mechanisms for sharing risks due to weather phenomena. In this study, a unique precipitation derivative is proposed that allows the purchaser to specify the parameters of the idemnity function. Pricing methods are presented in the context of a cotton harvest example from Mississippi. Our findings show a potential for weather derivatives to serve niche markets within U.S. agriculture.
The Differential Form Method for Finding Symmetries
Creators: name: Harrison, B. Kent
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: 22E70; 34A26; 35A25; 35A30; 53Z05

description: This article reviews the use of differential forms and Lie derivatives to find symmetries of differential equations, as originally presented by Harrison and Estabrook, J. Math. Phys., 12 (1971), 653. An outline of the method is given, followed by examples and references to recent papers using the method.
description: Published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
Effect of magnetic field and chemical potential on the RKKY interaction in the $α$-${\cal T}_3$ lattice
Creators: name: Roslyak, Oleksiy
name: Gumbs, Godfrey
name: Balassis, Antonios
name: Elsayed, Heba
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The interaction energy for the indirect-exchange or Ruderman-Kittel-Kasuva-Yosida (RKKY) interaction between magnetic spins localized on lattice sites of the $α$-${\cal T}_3$ model is calculated using linear response theory. In this model, the $\texttt{AB}$-honeycomb lattice structure is supplemented with $\texttt{C}$ atoms at the centers of the hexagonal lattice. This introduces a parameter $α$ for the ratio of the hopping integral from hub-to-rim and that around the rim of the hexagonal lattice. A valley and $α$-dependent retarded Greens function matrix is used to form the susceptibility. Analytic and numerical results are obtained for undoped $α$-${\cal T}_3$, when the chemical potential is finite and also in the presence of an applied magnetic field. We demonstrate the anisotropy of these results when the magnetic impurities are placed on the $\texttt{A,B}$ and $\texttt{C}$ sublattice sites. Additionally, comparison of the behavior of the susceptibility of $α$-${\cal T}_3$ with graphene shows that there is a phase transition at $α=0$.
Direct Payments between Income Support and Public Goods
Creators: name: Frascarelli, Angelo
Publisher: name: Italian Review of Agricultural Economics
Year: 2021

description: Direct payments maintain a fundamental role in the future CAP, since they still absorb a high share of the CAP budget. However, despite some confirmations (mainly related to internal convergence, types of interventions and the role of genuine/active farmers), several relevant innovations (e.g., a reinforced cross-compliance, new eco-schemes that replace the greening payments, a new capping model) are expected to affect their implementation and the way they contribute to achieving the CAP goals. The aim of this article is twofold. First, it analyzes the innovations that are going to be applied in relation to direct payments, following the two strategic objectives these public aids have been traditionally called to pursue: enhancing income support and fostering the provision of environmental public goods. Secondly, it focuses on three types of direct payments – basic income support for sustainability, eco-schemes, coupled payment – in order to provide indications on their greater effectiveness, with particular reference to the Italian case.
description: Italian Review of Agricultural Economics, Vol. 75 No. 3 (2020)
Promoting climate action in the future Common Agricultural Policy
Creators: name: Matthews, Alan
Publisher: name: Italian Review of Agricultural Economics
Year: 2021

description: Current projections indicate that agricultural GHG emissions are hardly expected to fall between 2017 and 2030 while the sink in the LULUCF sector is projected to decline. These trends call into question the feasibility of the Commission’s roadmap to reach net zero emissions by 2050. Contributing to climate change mitigation and adaptation is proposed as one of the nine specific objectives in the future CAP. This paper discusses how Member States could use the opportunities presented by the new CAP to reduce agricultural emissions while increasing removals in the LULUCF sector. The Commission has prefigured changes in the EU’s climate architecture that could give Member States greater incentives to prioritize climate action in their CAP Strategic Plans. A higher share of future CAP expenditure should also be allocated to climate action under the proposal for climate mainstreaming of the EU budget, although the effectiveness of this mandate is undermined by the poor quality of the metrics proposed. The different elements of the proposed green architecture in the future CAP are reviewed to highlight the scope for climate action, including the Commission’s proposal for a carbon farming initiative. Ultimately, it will be up to Member States to determine the priority they intend to give to climate action in their CAP Strategic Plans.
description: Italian Review of Agricultural Economics, Vol. 75 No. 3 (2020)
Markus Eremita und seine Schrift < De Melchisedech >
Creators: name: Hesse, Otmar
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 51 (1967): Oriens christianus, Band 51
Multiple-scale analysis and renormalization for pre-asymptotic scalar transport
Creators: name: Mazzino, A.
name: Musacchio, S.
name: Vulpiani, A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Pre-asymptotic transport of a scalar quantity passively advected by a velocity field formed by a large-scale component superimposed to a small-scale fluctuation is investigated both analytically and by means of numerical simulations. Exploiting the multiple-scale expansion one arrives at a Fokker--Planck equation which describes the pre-asymptotic scalar dynamics. Such equation is associated to a Langevin equation involving a multiplicative noise and an effective (compressible) drift. For the general case, no explicit expression for both the effective drift and the effective diffusivity (actually a tensorial field) can be obtained. We discuss an approximation under which an explicit expression for the diffusivity (and thus for the drift) can be obtained. Its expression permits to highlight the important fact that the diffusivity explicitly depends on the large-scale advecting velocity. Finally, the robustness of the aforementioned approximation is checked numerically by means of direct numerical simulations.
description: revtex4, 12 twocolumn pages, 3 eps figures
Locating the CAP in an escalating green agenda
Creators: name: Baldock, David
Publisher: name: Italian Review of Agricultural Economics
Year: 2021

description: Since the advent of decoupling, the process of adapting the Common Agricultural Policy (CAP) to a rising set of environmental priorities has involved various approaches and technical adjustments, with most Member States inclined to move more slowly than the European Commission. The debate on the post 2020 incarnation of the CAP has revealed a continued preference for gradual adaptation which stands in contrast to the escalation of environmental ambition set out in the Commission’s recent initiatives stemming from the Green Deal, including the Farm To Fork Strategy. Different ways of resolving this tension are discussed and some of the implications for the CAP and the related question of the distribution of EU funds to the Member States considered.
description: Italian Review of Agricultural Economics, Vol. 75 No. 3 (2020)
Additional file 1 of Determinants of translation efficiency in the evolutionarily-divergent protist Trichomonas vaginalis
Creators: name: Shuqi E. Wang
name: Brooks, Anna E. S.
name: Poole, Anthony M.
name: Simoes-Barbosa, Augusto
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Figure S1. Workflow for the investigation of codon usage bias as a TE determinant in T. vaginalis.Figure S2. Workflow for the investigation of mRNA secondary structure as a TE determinant in T. vaginalis.Figure S3. Structural pattern and variation of GC content across the length of T. vaginalis mRNAs from Dataset 4. Figure S4. Spearman’s correlation analyses did not reveal a direct association between TE and MFE at 5′ end or surrounding the AUG start codon of T. vaginalis mRNAs from Dataset 1. Figure S5. Transient expression of the synonymous iLOV genes from three independent transfections. Table S1. Pairwise comparisons across transient expression illustrated on Fig. S5. Table S2. Pairwise comparisons acrosss stable expression illustrated on Fig. 5b.
BT CORN AND INSECT RESISTANCE: AN ECONOMIC ASSESSMENT OF REFUGES
Creators: name: Hurley, Terrance M.
name: Babcock, Bruce A.
name: Hellmich, Richard L.
name: Hurley, Terrance M.
name: Babcock, Bruce A.
name: Hellmich, Richard L.
Publisher: name: Unknown
Year: 2001
Subjects: Crop Production/Industries

description: Genetically engineered crops offer farmers a new option for controlling pests. The high efficacy of these pesticidal crops, combined with the potential for widespread adoption, has raised concerns that pest resistance may prematurely diminish their value. In response to these concerns, the Environmental Protection Agency requires resistance management plans. Current resistance management plans rely on a high-dose refuge strategy. This analysis extends the current framework for evaluating high-dose refuge strategies to include a measure of agricultural productivity and conventional pesticide use. The economic tradeoff relative to agricultural productivity, conventional pesticide use, and pest resistance is assessed when Bt corn is planted to control the European corn borer.
Chromatic Microlensing Time Delays
Creators: name: Liao, Kai
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Due to the finite size of the disk and the temperature fluctuations producing the variability, microlensing changes the actual time delays between images of strongly lensed AGN on the $\sim$day(s) light-crossing time scale of the emission region. This microlensing-induced time delay depends on the disk model, primarily the disk size $R_\mathrm{disk}$ which has been found to be larger than predicted by the thin-disk model. In this work, we propose that light curves measured in different bands will give different time delays since $R_\mathrm{disk}$ is a function of wavelength, and by measuring the time delay differences between bands, one can 1) directly verify such an new effect; 2) test the thin-disk model of quasars. For the second goal, our method can avoid the potential inconsistency between multi-band light curves that may bias the results by continuum reverberation mapping. We conduct a simulation based on a PG 1115+080-like lensed quasar, calculating the theoretical distributions of time delay differences between two bands: u and i centered around 354nm and 780nm, under and beyond the thin-disk model, respectively. Assuming the disk size is twice larger than the standard one, we find that with a precision of 2 days in the time delay difference measurements, the microlensing time delay effect can be verified with $\sim4$ measurements while with $\sim35$ measurements the standard model can be excluded. This approach could be realized in the ongoing and upcoming multi-band wide-field surveys with follow-up observations.
description: 8 pages, 4 figures, accepted by ApJ Letters
Stellar Populations in Bulges
Creators: name: Moorthy, Bhasker K.
name: Holtzman, Jon A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present line strengths in the bulges and inner disks of 38 galaxies in the local universe, including several galaxies whose bulges were previously identified as being disk-like in their colors or kinematics, to see if their spectral properties reveal evidence for secular evolution. We find that red bulges of all Hubble types are similar to luminous ellipticals in their central stellar populations. They have large luminosity-weighted ages, metallicities, and alpha/Fe ratios. Blue bulges can be separated into a metal-poor class that is restricted to late-types with small velocity dispersion and a young, metal-rich class that includes all Hubble types and velocity dispersions. Luminosity-weighted metallicities and alpha/Fe ratios are sensitive to central velocity dispersion and maximum disk rotational velocity. Red bulges and ellipticals follow the same scaling relations. We see differences in some scaling relations between blue and red bulges and between bulges of barred and unbarred galaxies. Most bulges have decreasing metallicity with increasing radius; galaxies with larger central metallicities have steeper gradients. Where positive age gradients (with the central regions being younger) are present, they are invariably in barred galaxies. The metallicities of bulges are correlated with those of their disks. While this and the differences between barred and unbarred galaxies suggest that secular evolution cannot be ignored, our results are generally consistent with the hypothesis that mergers have been the dominant mechanism responsible for bulge formation.
description: 30 pages, 21 figures; submitted to MNRAS
The path integral of 3D gravity near extremality; or, JT gravity with defects as a matrix integral
Creators: name: Maxfield, Henry
name: Turiaci, Gustavo J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We propose that a class of new topologies, for which there is no classical solution, should be included in the path integral of three-dimensional pure gravity, and that their inclusion solves pathological negativities in the spectrum, replacing them with a nonperturbative shift of the BTZ extremality bound. We argue that a two-dimensional calculation using a dimensionally reduced theory captures the leading effects in the near extremal limit. To make this argument, we study a closely related two-dimensional theory of Jackiw-Teitelboim gravity with dynamical defects. We show that this theory is equivalent to a matrix integral.
description: 57 pp; v2 typos corrected, ref added and new section 3.5
Gandvik
Creators: name: Magnússon, Árni
Publisher: name: Unknown
Year: 1720

description: Manuskript. 2 eks., avskrifter. Det ene eksemplaret er en avskrift av Benjamin Dass, med Gerhard Schønings signatur på tittelbladet, det andre en avskrift av en ukjent hånd.
description: Avskrift ca 1760.
description: Under teksten: "Alt ovenstaaende er udskrevet af Prof. Arnæ Magnæi Avtographo".
Operator quantum error correction
Creators: name: Kribs, David W.
name: Laflamme, Raymond
name: Poulin, David
name: Lesosky, Maia
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: Functional Analysis (math.FA)
subject: Operator Algebras (math.OA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: This paper is an expanded and more detailed version of our recent work in which the Operator Quantum Error Correction formalism was introduced. This is a new scheme for the error correction of quantum operations that incorporates the known techniques - i.e. the standard error correction model, the method of decoherence-free subspaces, and the noiseless subsystem method - as special cases, and relies on a generalized mathematical framework for noiseless subsystems that applies to arbitrary quantum operations. We also discuss a number of examples and introduce the notion of ``unitarily noiseless subsystems''.
description: 21 pages, to appear in Quantum Information & Computation
Kort Underretning om det fordum af Nordmænd og Islænder bebygte, men nu i nogle Hundrede Aar næsten ubekiendt værende og saa kaldede Gamle Grønland, dets egentlige Beskaffenhed : saa og om den part af Nordt-America, som først af Grønlænderne er bleven opfunden og da kaldet Vinland ; af gamle Membraner saa vel som andre tilforladelige Documenter og troværdige Skrifter forestillet / ved Andream Bussæum
Creators: name: Bussæus, Andreas
name: Gram, Hans
name: Magnússon, Árni
Publisher: name: Unknown
Year: 0

description: Innholdsfortegnelsen er skrevet med én hånd, resten av manuskriptet med en annen. Vedl: Brev fra H. Gr., dvs. Hans Gram [til Arni Magnusson], med kommentarer til en ev. trykking.
The Common Agricultural Policy 2021-2027: a new history for European agriculture
Creators: name: De Castro, Paolo
name: Miglietta, Pier Paolo
name: Vecchio, Yari
Publisher: name: Italian Review of Agricultural Economics
Year: 2021

description: Contributing to the ongoing debate on the future of European agriculture and rural areas, the study states that, in the light of the present historical contingency, the Common Agricultural Policy (CAP) will need to support the reconciliation between the target objective of competitive agriculture with that of a resilient agri-food system able to develop constant benefits for the entire EU community. Historically, flexibility has been the main incremental feature of the European CAP reforms. For the programming period 2021-2027, the European Commission has presented a completely new model of CAP governance characterized by less detailed rules and more attention to performance, which implies a greater freedom of action for each Member State, but also greater responsibility. The CAP has evolved over time and so today the criticized limits of the European intervention can be considered outdated.
description: Italian Review of Agricultural Economics, Vol. 75 No. 3 (2020)
Additional file 5 of Differential contribution of p300 and CBP to regulatory element acetylation in mESCs
Creators: name: Martire, Sara
name: Nguyen, Jennifer
name: Aishwarya Sundaresan
name: Banaszynski, Laura A.
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 5: Figure S5. Raw immunoblots. (A) Western blots related to Fig. 1a. (B) Western blots related to Supplementary Figure 1C and 1G. (C) Western blots related to Supplementary Figure 3C and 3D.
Magnetization generated by microwave-induced Rashba interaction
Creators: name: Entin-Wohlman, O.
name: Shekhter, R. I.
name: Jonson, M.
name: Aharony, A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We show that a controllable dc magnetization is accumulated in a junction comprising a quantum dot coupled to non-magnetic reservoirs if the junction is subjected to a time-dependent spin-orbit interaction. The latter is induced by an ac electric field generated by microwave irradiation of the gated junction. The magnetization is caused by inelastic spin-flip scattering of electrons that tunnel through the junction, and depends on the polarization of the electric field: a circularly polarized field leads to the maximal effect, while there is no effect in a linearly polarized field. Furthermore, the magnetization increases as a step function (smoothened by temperature) as the microwave photon energy becomes larger than the absolute value of the difference between the single energy level on the quantum dot and the common chemical potential in the leads.
description: 10 pages 4 figures published version https://link.aps.org/doi/10.1103/PhysRevB.102.075419
Jaum al-kir im Pauluslektionar des Sin. ar. 155
Creators: name: Engberding, Hieronymus
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 51 (1967): Oriens christianus, Band 51
Valorizzazione del latte «Prodotto di montagna»: un’analisi esplorativa sulle scelte di acquisto dei consumatori
Creators: name: Bentivoglio, Deborah
name: Bucci, Giorgia
name: Staffolani, Giacomo
Publisher: name: Italian Review of Agricultural Economics
Year: 2020

description: In order to promote the sustainable development on mountain areas, the EU introduced the optional quality term «Mountain Product» to food products produced and processed in these areas. Nowadays in Italy, 606 producers have chosen to adhere to this new label. Thus, a key interest lies in identifying the consumer propensity to purchase a «mountain‐type» food. The aim of this study is to estimate the premium price that consumers are willing to pay for a labeled mountain milk. To accomplish this aim, a dichotomous choice contingent valuation, based on a double-bound model, has been applied. Results indicate that consumers’ beliefs about the production process and quality attributes of mountain food affect their WTP a premium to buy these specific products. In addition, mountain products are attracted mainly by health-conscious and local economy-conscious individuals.
description: Italian Review of Agricultural Economics, Vol. 75 No. 2 (2020)
EU border rejections of unauthorized GM food and the trade deflection effects
Creators: name: Mendoza Cuello, Dannyra Tatiana
name: De Faria, Rosane Nunes
name: Figueiredo, Adelson Martins
name: Burnquist, Heloisa Lee
Publisher: name: Italian Review of Agricultural Economics
Year: 2020

description: We identify that consignments rejected by the European Union, due to the presence of unauthorized Genetically Modified food, have been diverted to third countries, creating trade deflections. We rely on a gravity model to examine the effects on food products. Our results show that the rejection of shipments by the EU has a side-effect on the global trade flows in the form of trade deflection, which can overcome losses related to A.A. The deflection occurs largely for products whose major importers have already approved most of the GM events rejected by the EU and with very concentrated export market. We also found that exporting countries with higher border rejections tend to increase their trade deflections, providing a deeper understanding of the effects of A.A on global trade flows.
description: Italian Review of Agricultural Economics, Vol. 75 No. 2 (2020)
Photovoltaic effect in bent quantum wires
Creators: name: Pershin, Yu. V.
name: Piermarocchi, C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We propose a scheme for the generation of photocurrent in bent quantum wires. We calculate the current using a generalized Landauer-Buttiker approach that takes into account the electromagnetic radiation. For circularly polarized light, we find that the curvature in the bent wire induces an asymmetry in the scattering coefficients for left and right moving electrons. This asymmetry results in a current at zero bias voltage. The effect is due to the geometry of the wire which transforms the photon angular momentum into translational motion for the electrons.
Variables associated with the employment and occupational status of Southeast Asian women refugees
Creators: name: Bunjun, Bénita
Publisher: name: University of British Columbia
Year: 2009

description: There have been numerous studies on the economic, social, and emotional lives of the Southeast Asian refugees (Adelman, 1982; Beiser, Johnson, & Roshi, 1994; Haines, 1989; Neuwirth, 1984; Nutter, 1984; Whitmore, Trautmann, & Caplan, 1989), yet the lack o f focus on Southeast Asian women refugees is prevalent. Human capital theory explored Southeast Asian women refugees' unique settlement experience as workers in Canada. Data from the Refugee Resettlement Study, " A Ten Year Study of Southeast Asian Refugees in Canada" (Beiser et al., 1994) was used to examine the employment experiences of women from Vietnam and Laos who came to Canada as refugees. The majority of the women were employed and were in jobs with low occupational status. Logistic regression was used to analyse variables associated with employment and occupational status. High English language proficiency was associated with being employed and having high occupational status. In addition, being younger increased employability. When the individual items within the English language proficiency scale were assessed, ability to read English and low ethnic concentration promoted employability. Ability to write English and low ethnic concentration increased the likelihood of having higher occupational status. This study contributes to the limited literature on refugee women's human capital accumulation and employment experiences during settlement in the host country.
BPS solitons with internal structure in the gauged $O(3)$ sigma model
Creators: name: Casana, Rodolfo
name: Santos, André C.
name: Dias, M. L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the existence of self-dual solitons with internal structure in a gauged $O(3)$ nonlinear sigma model immersed in a dielectric medium generated by a real scalar field (dubbed the source field). We consider rotationally symmetric configurations and applying the {Bogomol'nyi-Prasad-Sommerfield} formalism to obtain the energy lower bound and the respective {first-order differential equations (or self-dual equations).} By solving such a system of equations for three different dielectric media, we find the internal structure generates relevant changes in the soliton profiles when compared with the ones obtained without the presence of the dielectric medium.
description: 11 pages, Latex 2e, 15 figures
Anomalous Hall effect in ferromagnetic disordered metals
Creators: name: Woelfle, P.
name: Muttalib, K. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The anomalous Hall effect in disordered band ferromagnets is considered in the framework of quantum transport theory. A microscopic model of electrons in a random potential of identical impurities including spin-orbit coupling is used. The Hall conductivity is calculated from the Kubo formula for both, the skew scattering and the side-jump mechanisms. The recently discussed Berry phase induced Hall current is also evaluated within the model. The effect of strong impurity scattering is analyzed and it is found to affect the ratio of the non-diagonal (Hall) and diagonal components of the conductivity as well as the relative importance of different mechanisms.
description: Invited paper for Ann. Physik commemorating Paul Drude
Additional file 4 of Differential contribution of p300 and CBP to regulatory element acetylation in mESCs
Creators: name: Martire, Sara
name: Nguyen, Jennifer
name: Aishwarya Sundaresan
name: Banaszynski, Laura A.
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 4: Figure S4. Chromatin features of p300-dependent enhancers in wild-type mESCs. (A) ChIP-seq average profiles of p300 [19] in wild-type mESCs at regions of H3K27ac enrichment that are lost, common and gained after p300 KD. (B) ChIP-seq average profiles of H3K4me1, H3K4me3 and H3.3 [19] in wild-type mESCs at regions of H3K27ac enrichment that are lost, common and gained after p300 KD. (C) ChIP-seq average profiles of Oct4, Nanog, Sox2 [29] in wild-type mESCs at regions of H3K27ac enrichment that are lost, common and gained after p300 KD. (D) ATAC-seq average profile in wild-type mESCs at regions of H3K27ac enrichment that are lost, common and gained after p300 KD.
Topological Phase Transitions Induced by Disorder in Magnetically Doped (Bi, Sb)$_2$Te$_3$ Thin Films
Creators: name: Okugawa, Takuya
name: Tang, Peizhe
name: Rubio, Angel
name: Kennes, Dante M.
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: We study disorder induced topological phase transitions in magnetically doped (Bi, Sb)$_2$Te$_3$ thin films, by using large scale transport simulations of the conductance through a disordered region coupled to reservoirs in the quantum spin Hall regime. Besides the disorder strength, the rich phase diagram also strongly depends on the magnetic exchange field, the Fermi level, and the initial topological state in the undoped and clean limit of the films. In an initially trivial system at non-zero exchange field, varying the disorder strength can induce a sequence of transitions from a normal insulating, to a quantum anomalous Hall, then a spin-Chern insulating, and finally an Anderson insulating state. While for a system with topology initially, a similar sequence, but only starting from the quantum anomalous Hall state, can be induced. Varying the Fermi level we find a similarly rich phase diagram, including transitions from the quantum anomalous Hall to the spin-Chern insulating state via a state that behaves as a mixture of a quantum anomalous Hall and a metallic state, akin to recent experimental reports.
La normative italiana sull’agricoltura sociale e il ruolo dell’impresa agricola
Creators: name: Giarè, Francesca
name: Ricciardi, Gabriella
name: Ascani, Michela
Publisher: name: Italian Review of Agricultural Economics
Year: 2020

description: In Italy, the regulatory framework on Social Farming has a high level of articulation at national and regional level and requires adequate analysis in order to understand the possible implications for the agriculture. The purpose of the article is to contribute to the understanding the possible interactions between farmers, local communities, public and private actors and recipients. The contribute, after a general analysis of the national and regional legislation, focuses on the figure of the SF operator and on the modalities of registration with the regional register. The question arises is whether and to what extent the regulatory framework on SF changes the role of agriculture itself with the system into which it operates, mainly about social aspects and relations with other local actors.
description: Italian Review of Agricultural Economics, Vol. 75 No. 2 (2020)
Additional file 3 of Differential contribution of p300 and CBP to regulatory element acetylation in mESCs
Creators: name: Martire, Sara
name: Nguyen, Jennifer
name: Aishwarya Sundaresan
name: Banaszynski, Laura A.
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 3: Figure S3. H3K27ac is maintained at p53 motifs after p300 depletion. (A) Venn diagrams showing the relationship between p300 KD and CBP KD RNA-seq in up- (top) and down-regulated (bottom) genes. (B) GSEA pathway analysis of significantly regulated genes (based on RNA-seq) in CBP KD mESC compared to Ctl mESC. The normalized enrichment score (NES) is indicated for each gene set. (C) Immunoblot from whole cell lysates from mESCs transfected with scramble shRNA (Ctl) or p300 shRNA. Blot is representative of three independent experiments. (D) Immunoblot from whole cell lysates from mESCs transfected with scramble shRNA (Ctl) or p300 shRNA. Prior to harvesting, mESCs were treated for three min with 10 Gy of IR. Blot is representative of three independent experiments. (E) Cell cycle phase distribution for Ctrl and KD cells. Cells were stained with BrdU and 7-AAD according to the kit manufacturer’s instructions (BD Pharmingen™ BrdU Flow Kits). Graph shows quantification and standard deviation over three independent experiments.