cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
DNA uptake into nuclei: Numerical and analytical results
Creators: name: Farkas, Zeno
name: Derenyi, Imre
name: Vicsek, Tamas
Publisher: name: arXiv
Year: 2002
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Quantitative Biology (q-bio)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: The dynamics of polymer translocation through a pore has been the subject of recent theoretical and experimental works. We have considered theoretical estimates and performed computer simulations to understand the mechanism of DNA uptake into the cell nucleus, a phenomenon experimentally investigated by attaching a small bead to the free end of the double helix and pulling this bead with the help of an optical trap. The experiments show that the uptake is monotonous and slows down when the remaining DNA segment becomes very short. Numerical and analytical studies of the entropic repulsion between the DNA filament and the membrane wall suggest a new interpretation of the experimental observations. Our results indicate that the repulsion monotonically decreases as the uptake progresses. Thus, the DNA is pulled in (i) either by a small force of unknown origin, and then the slowing down can be interpreted only statistically; (ii) or by a strong but slow ratchet mechanism, which would naturally explain the observed monotonicity, but then the slowing down requires additional explanations. Only further experiments can unambiguously distinguish between these two mechanisms.
description: 12 pages, 6 figures, submitted to J. Phys. Cond. Mat
title: Does Inter-local Cooperation Reduce the Intensity of Tax Competition? Evidence on Inter-local Industrial Parks in Germany
title: MAGKS - Joint Discussion Paper Series in Economics
Creators: name: Bischoff, Ivo
name: Kosfeld, Reinhold
Publisher: name: Philipps-Universität Marburg
Year: 2021
Subjects: inter-municipal cooperation
tax competition
Inter-local industrial parks
gen-eralized synthetic control method
Economics
Wirtschaft
Germany

description: We ask whether inter-municipal cooperation serve as a platform by which municipalities coor-dinate tax policies and reduce the intensity of tax competition. In this paper, we focus on inter-municipal cooperation in form of inter-local industrial parks. We apply the generalized syn-thetic control method to analyze the causal impact of inter-local industrial parks on municipal tax-setting behavior using data on municipalities from four West-German states between 2000 and 2018. The analysis does not support the notion that inter-local industrial parks constitute a platform used for tax coordination.
Evidence for a Fast Decline in the Progenitor Population of Gamma Ray Bursts and the Nature of their Origin
Creators: name: Stern, B. E.
name: Atteia, J-L.
name: Hurley, K.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We show that the source population of long gamma-ray bursts (GRBs) has declined by at least a factor of 12 (at the 90% confidence level) since the early stages of the Universe ($z \sim 2 - 3$). This result has been obtained using the combined BATSE and \it Ulysses \rm GRB brightness distribution and the detection of four GRBs with known redshifts brighter than 10$^{52}$ erg s$^{-1}$ in the 50 - 300 keV range at their peak. The data indicate that the decline of the GRB source population is as fast as, or even faster than, the measured decline of the star formation rate. Models for the evolution of neutron star binaries predict a significantly larger number of apparently bright GRBs than observed. Thus our results give independent support to the hypernova model, which naturally explains the fast decline in the progenitor population.
description: 7 pages, 6 figures, submitted to ApJ, added references
Evidence for Quark-Hadron Duality in the Proton Spin Asymmetry $A_1$
Creators: name: HERMES Collaboration
name: Airapetian, A.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Spin-dependent lepton-nucleon scattering data have been used to investigate the validity of the concept of quark-hadron duality for the spin asymmetry $A_1$. Longitudinally polarised positrons were scattered off a longitudinally polarised hydrogen target for values of $Q^2$ between 1.2 and 12 GeV$^2$ and values of $W^2$ between 1 and 4 GeV$^2$. The average double-spin asymmetry in the nucleon resonance region is found to agree with that measured in deep-inelastic scattering at the same values of the Bjorken scaling variable $x$. This finding implies that the description of $A_1$ in terms of quark degrees of freedom is valid also in the nucleon resonance region for values of $Q^2$ above 1.6 GeV$^2$.
description: 5 pages, 1 eps figure, table added, new references added, in print in Phys. Rev. Lett
An Entropy-Based Approach for Nonparametrically Testing Simple Probability Distribution Hypotheses
Creators: name: Mittelhammer, Ron
name: Judge, George
name: Henry, Miguel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Econometrics (econ.EM)
subject: FOS: Economics and business

description: In this paper, we introduce a flexible and widely applicable nonparametric entropy-based testing procedure that can be used to assess the validity of simple hypotheses about a specific parametric population distribution. The testing methodology relies on the characteristic function of the population probability distribution being tested and is attractive in that, regardless of the null hypothesis being tested, it provides a unified framework for conducting such tests. The testing procedure is also computationally tractable and relatively straightforward to implement. In contrast to some alternative test statistics, the proposed entropy test is free from user-specified kernel and bandwidth choices, idiosyncratic and complex regularity conditions, and/or choices of evaluation grids. Several simulation exercises were performed to document the empirical performance of our proposed test, including a regression example that is illustrative of how, in some contexts, the approach can be applied to composite hypothesis-testing situations via data transformations. Overall, the testing procedure exhibits notable promise, exhibiting appreciable increasing power as sample size increases for a number of alternative distributions when contrasted with hypothesized null distributions. Possible general extensions of the approach to composite hypothesis-testing contexts, and directions for future work are also discussed.
description: 19 pages, 6 figures
title: A Real-Option Analysis of Climate Change and International Migration
title: MAGKS - Joint Discussion Paper Series in Economics
Creators: name: Braun, Marius
Publisher: name: Philipps-Universität Marburg
Year: 2021
Subjects: climate change
international migration
real-options
semiparametric methods
Economics
Wirtschaft

description: The potential impact of climate change on international migration patterns has recently received considerable attention in both the public and academic debate. Yet, much of the empirical literature fails to find increases in international migration due to climate change. The current paper attempts to resolve this “immobility paradox” by applying a real-options framework to the relationship between climate change and international migration. This framework suggests that individuals may postpone their migration response to climate change in the face of uncertainty and only migrate once impacts of climate change have exceeded certain thresholds. I test this prediction using semiparametric regression methods which allow me to empirically identify the threshold effects implied by the real-options framework. However, the findings are generally inconsistent with such threshold effects. Rather, the results suggest that in low-income countries, individuals’ migration response is hampered by the existence of liquidity constraints. These are likely to become more binding due to climate change-induced decreases in agricultural productivity.
A CGE Analysis of Policies to Combat Deforestation in Cameroon
Creators: name: Wiebelt, Manfred
name: Thiele, Rainer
name: Wiebelt, Manfred
name: Thiele, Rainer
Publisher: name: Unknown
Year: 1997
Subjects: Environmental Economics and Policy
Productivity Analysis

description: This paper provides a numerical general equilibrium assessment of forestry policies aimed at the reduction of tropical deforestation in Cameroon. Four different policy measures are distinguished, namely the provision of more secure timber concessions, a rise in the minimum size of trees that can be harvested, the establishment of national parks, and a tax on forest land. In the model simulations, all instruments are calibrated so as to achieve a prespecified increase in the volume of standing timber. The achievement of the ecological target is mainly due to the fact that the policies prevent the agricultural conversion of some forest land. From an ecological perspective, more secure property rights for concessionaires are the preferred option, because they most effectively deal with the main problem in Cameroon, that is the extremely short rotation period which does not allow the forest to regenerate. All policies lead to a moderate decline in real GDP.
OmniPrint: A Configurable Printed Character Synthesizer
Creators: name: Sun, Haozhe
name: Tu, Wei-Wei
name: Guyon, Isabelle
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: We introduce OmniPrint, a synthetic data generator of isolated printed characters, geared toward machine learning research. It draws inspiration from famous datasets such as MNIST, SVHN and Omniglot, but offers the capability of generating a wide variety of printed characters from various languages, fonts and styles, with customized distortions. We include 935 fonts from 27 scripts and many types of distortions. As a proof of concept, we show various use cases, including an example of meta-learning dataset designed for the upcoming MetaDL NeurIPS 2021 competition. OmniPrint is available at https://github.com/SunHaozhe/OmniPrint.
description: Accepted at 35th Conference on Neural Information Processing Systems (NeurIPS 2021) Track on Datasets and Benchmarks. https://openreview.net/forum?id=R07XwJPmgpl
title: Technical Appendix: Tax Laws and Revenue Effects
title: MAGKS - Joint Discussion Paper Series in Economics
Creators: name: Mierzwa, Sascha
Publisher: name: Philipps-Universität Marburg
Year: 2021
Subjects: Economics
Wirtschaft

description: This documentation extends Romer and Romer’s (2009), Cloyne’s (2012), Uhl’s (2012), and Gechert et al.'s (2016) narrative accounts of legislated tax changes up to the end of 2017. The dataset is the basis of my PhD dissertation (Hayo & Mierzwa, 2020, 2021a, 2021b, 2021c; Hayo et al., 2021; Mierzwa, 2021).
Testing Seesaw and Leptogenesis with Gravitational Waves
Creators: name: Dror, Jeff A.
name: Hiramatsu, Takashi
name: Kohri, Kazunori
name: Murayama, Hitoshi
name: White, Graham
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the possibility that the seesaw mechanism with thermal leptogenesis can be tested using the stochastic gravitational background. Achieving neutrino masses consistent with atmospheric and solar neutrino data, while avoiding non-perturbative couplings, requires right-neutrinos lighter than the typical scale of grand unification. This scale separation suggests a symmetry protecting the right handed neutrinos from getting a mass. Thermal leptogenesis would then require that such a symmetry be broken below the reheating temperature. We enumerate all such possible symmetries consistent with these minimal assumptions and their corresponding defects, finding that in many cases, gravitational waves from the network of cosmic strings should be detectable. Estimating the predicted gravitational wave background we find that future space-borne missions could probe the entire range relevant for thermal leptogenesis.
description: 6 pages, 1 figures, published version
Genomic analysis of 1,325 Camellia accessions sheds light on agronomic and metabolic traits for tea plant improvement
Creators: name: Kong, Weilong
Publisher: name: Zenodo
Year: 2025

description: All codes (The all code in this study.txt)

Leaf shape traits (Tea.leaf.phenotypes.xlsx) and metabolomic traits (Tea.Leaf.metabolites.average.xlsx) data for GWAS analysis
Collision of $ϕ^4$ kinks free of the Peierls-Nabarro barrier in the regime of strong discreteness
Creators: name: Askari, Alidad
name: Marjaneh, Aliakbar Moradi
name: Rakhmatullina, Zhanna G.
name: Ebrahimi-Loushab, Mahdy
name: Saadatmand, Danial
name: Gani, Vakhid A.
name: Kevrekidis, Panayotis G.
name: Dmitriev, Sergey V.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The two major effects observed in collisions of the continuum $ϕ^4$ kinks are (i) the existence of critical collision velocity above which the kinks always emerge from the collision and (ii) the existence of the escape windows for multi-bounce collisions with the velocity below the critical one, associated with the energy exchange between the kink's internal and translational modes. The potential merger (for sufficiently low collision speeds) of the kink and antikink produces a bion with oscillation frequency $ω_B$, which constantly radiates energy, since its higher harmonics are always within the phonon spectrum. Similar effects have been observed in the discrete $ϕ^4$ kink-antikink collisions for relatively weak discreteness. Here we analyze kinks colliding with their mirror image antikinks in the regime of strong discreteness considering an exceptional discretization of the $ϕ^4$ field equation where the static Peierls-Nabarro potential is precisely zero and the not-too-fast kinks can propagate practically radiating no energy. Several new effects are observed in this case, originating from the fact that the phonon band width is small for strongly discrete lattices and for even higher discreteness an inversion of the phonon spectrum takes place with the short waves becoming low-frequency waves. When the phonon band is narrow, not a bion but a discrete breather with frequency $ω_{DB}$ and all higher harmonics outside the phonon band is formed. When the phonon spectrum is inverted, the kink and antikink become mutually repulsive solitary waves with oscillatory tails, and their collision is possible only for velocities above a threshold value sufficient to overcome their repulsion.
description: 28 pages, 9 figures; v2: major revision; matches the published version
Deep radio imaging of the SCUBA 8-mJy survey fields: sub-mm source identifications and redshift distribution
Creators: name: Ivison, Rob
name: Greve, Thomas
name: Smail, Ian
name: Dunlop, James
name: Roche, Nathan
name: Scott, Susie
name: Page, Mat
name: Stevens, Jason
name: Almaini, Omar
name: Blain, Andrew
name: Willott, Chris
name: Fox, Matt
name: Gilbank, David
name: Serjeant, Steve
name: Hughes, David
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The SCUBA 8-mJy survey is the largest submm extragalactic mapping survey undertaken to date, centred on the Lockman Hole and ELAIS N2 regions. Here, we present new 1.4-GHz imaging of the depth and resolution necessary to reliably identify radio counterparts for 18 of 30 submm sources. Armed with this greatly improved positional information, we present and analyse new optical, near-IR and XMM-Newton X-ray imaging to identify optical/IR host galaxies to half of the submm-selected sources in those fields. As many as 15% of the submm sources detected at 1.4 GHz are resolved by the 1.4'' beam and a further 25% have more than one radio counterpart, suggesting that radio and submm emission arise from extended starbursts and that interactions are common. We note that less than a quarter of the submm-selected sample would have been recovered by targeting optically faint radio sources, underlining the selective nature of such surveys. At least 60% of the radio-confirmed optical/IR host galaxies appear to be morphologically distorted; many are composite systems - red galaxies with relatively blue companions; just over half are found to be very red or extremely red; contrary to popular belief, most are sufficiently bright to be tackled with spectrographs on 8-m telescopes. We estimate the median redshift of the S(850um) ~ 8 mJy submm galaxy population: if the radio/far-IR correlation holds at high redshift, and our sample is unbiased, we derive a conservative median z >= 2.0, or >= 2.4 using spectral templates more representative of known submm galaxies [abridged].
description: In press at MNRAS. Extra IR imaging now included. 27 pages; 14 figures, mostly colour. The resolution of Figs 1 and 2 has been degraded. Higher quality versions of paper available at http://www.roe.ac.uk/~rji/8mjy.ps.gz (a4) and http://www.roe.ac.uk/~rji/8mjy_letter.ps.gz (letter)
Is the lack of power anomaly in the CMB correlated with the orientation of the Galactic plane?
Creators: name: Natale, U.
name: Gruppuso, A.
name: Molinari, D.
name: Natoli, P.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The lack of power at large angular scales in the CMB temperature anisotropy pattern is a feature known to depend on the size of the Galactic mask. Not only the large scale anisotropy power in the CMB is lower than the best-fit $Λ$CDM model predicts, but most of the power seems to be localised close to the Galactic plane, making high-Galactic latitude regions more anomalous. We assess how likely the latter behaviour is in a $Λ$CDM model by extracting simulations from the {\it Planck} 2018 fiducial model. By comparing the former to {\it Planck} data in different Galactic masks, we reproduce the anomaly found in previous works, at a statistical significance of $\sim 3 \, σ$. This result suggests the existence of a bizzarre correlation between the particular orientation of the Galaxy and the lack of power anomaly. To test this hypothesis, we perform random rotations of the {\it Planck} 2018 data and compare these to similarly rotated $Λ$CDM realisations. We find that, among all possible rotations, the lower-tail probability of the observed high-Galactic latitude data variance is still low at the level of $2.8 \, σ$. Furthermore, the lowering trend of the variance when moving from low- to high-Galactic latitude is anomalous in the data at $\sim 3\,σ$ when comparing to $Λ$CDM rotated realisations. This shows that the lack of power at high Galactic latitude is substantially stable against the "look elsewhere" effect induced by random rotations of the Galaxy orientation. Moreover, this analysis turns out to be substantially stable if we employ, in place of generic $Λ$CDM simulations, a specific set whose variance is constrained to reproduce the observed data variance.
description: 23 pages, 21 figures
Non-linear Schrödinger-type formulation of scalar field cosmology: two barotropic fluids and exact solutions
Creators: name: Kritpetch, Chonticha
name: Sanongkhun, Jarunee
name: Vanichchapongjaroen, Pichet
name: Gumjudpai, Burin
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Time-independent non-linear Schrödinger-type (NLS) formulation of FRW cosmology with canonical scalar field are considered in case of two barotropic fluids. We derived Friedmann formulation variables in terms of NLS variables. Seven exact solutions found by D'Ambroise \cite{DAmbroise:2010dgl} and one new found solution are explored and tested in cosmology. The result suggests that time-independent NLS formulation of cosmology case should be upgraded to the time-dependent case.
description: 11 pages, 2 figures
A Literature Survey of Recent Advances in Chatbots
Creators: name: Caldarini, Guendalina
name: Jaf, Sardar
name: McGarry, Kenneth
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Chatbots are intelligent conversational computer systems designed to mimic human conversation to enable automated online guidance and support. The increased benefits of chatbots led to their wide adoption by many industries in order to provide virtual assistance to customers. Chatbots utilise methods and algorithms from two Artificial Intelligence domains: Natural Language Processing and Machine Learning. However, there are many challenges and limitations in their application. In this survey we review recent advances on chatbots, where Artificial Intelligence and Natural Language processing are used. We highlight the main challenges and limitations of current work and make recommendations for future research investigation.
title: The Real and Financial Impact of COVID-19 Around the World
title: MAGKS - Joint Discussion Paper Series in Economics
Creators: name: Klose, Jens
name: Tillmann, Peter
Publisher: name: Philipps-Universität Marburg
Year: 2021
Subjects: panel VAR
lockdown-measures
COVID-19
Economics
Wirtschaft

description: In this paper, we study the impact of the COVID-19 pandemic in estimated panel VAR models for 92 countries. The large cross section of countries allows us to shed light on the heterogeneity of the responses of stock markets and NO2 emissions as high-frequency measures of economic activity. We quantify the effect of the number of infections and four dimensions of policy measures: (1) containment and closure, (2) movement restrictions, (3) economic support and (4) adjustments of health systems. Our main findings show that a surprise increase in the number of infections triggers a drop in our two measures of economic activity. Propping up economic support measures, in contrast, raises stock returns and emissions and, thus, contributes to the economic recovery. We also document vast differences in the responses across subsets of countries and between the first and the second wave of infections.
Comments on D-branes on general group manifolds
Creators: name: Michishita, Yoji
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate D-branes with maximal symmetry on general group manifolds in terms of boundary states and effective actions. We show that in large $k$ limit boundary states with an suitable Wilson line form boundary states of the other types of D-branes, extending the known fact in SU(2) case. We also show that fluctuation mass spectrum around D-brane solutions of the effective action agrees with that of boundary CFT in large $k$ limit.
description: LaTeX, 14 pages, no figures v2:minor correction and reference added v3:minor change
title: Financial Markets and ECB Monetary Policy Communication – A Second QE Surprise
title: MAGKS - Joint Discussion Paper Series in Economics
Creators: name: , Fachbereich Wirtschaftswissenschaften
name: , Wirtschaftswissenschaften
Publisher: name: Philipps-Universität Marburg
Year: 2022
Subjects: Economics
Wirtschaft
Communication
ECB
High-Frequency Data
Unconventional Monetary Policy

description: This paper shows that a different communication style of the European Central Bank (ECB) affects stock prices differently. A break in the ECB’s communication from 2016 onwards makes it necessary to adjust the identification of monetary policy surprises in the euro area. By modifying the high-frequency identification of monetary policy shocks in the euro area, I can show that two quantitative easing shocks occur per decision: One during the release and one during the press conference. Although the impact on policy rates is identical, the release window shock seems to have a more pronounced effect on stock prices.
Remarks on Charged Vortices in the Maxwell-Chern-Simons Model
Creators: name: Colatto, L. P.
name: Helayel-Neto, J. A.
name: Hott, M.
name: Moura-Melo, Winder A.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We study vortex-like configuration in Maxwell-Chern-Simons Electrodynamics. Attention is paid to the similarity it shares with the Nielsen-Olesen solutions at large distances. A magnetic symmetry between a point-like and an azimuthal-like current in this framework is also pointed out. Furthermore, we address the issue of a neutral and spinless particle interacting with a charged vortex, and obtain that the Aharonov-Casher-type phase depends upon mass and distance parameters.
description: New refs. added. Version accepted for publication in Phys. Lett. A
Perceptions of authenticity - Australian luxury specialist accommodation experiences.pdf
Creators: name: Manfreda, Anita
name: Presbury, Rajka
name: Richardson, Scott
Publisher: name: Torrens University Australia
Year: 2019
Subjects: subject: 150402 Hospitality Management
subject: FOS: Economics and business

description: Tourists are becoming more discerning and hedonistic, seeking luxury, not based on products and services, but on authentic experiences, thus impacting how the accommodation sector responds to new customer needs. This paper suggests that a relationship exists between the notion of guest experience and tourist’s perception of authenticity in luxury specialist accommodation, which could assist industry practitioners in strengthening customer’s satisfaction. From an interpretivist, multiple case-study methodology, this paper seeks to explore the concepts of guest experience and perception of authenticity in specialist luxury accommodation in Australia, proposing a conceptual framework for a future research study, aimed to draw substantial findings in the field of luxury specialist accommodation, guest experience and authenticity. Cite: Manfreda, Anita; Presbury, Rajka and Richardson, Scott. Perceptions of authenticity: Australian luxury specialist accommodation experiences [online]. In: CAUTHE 2019: Sustainability of Tourism, Hospitality & Events in a Disruptive Digital Age: Proceedings of the 29th Annual Conference. Cairns, QLD: Central Queensland University, Australia, 2019: 19-25
Large Momentum Transfer Clock Atom Interferometry on the 689 nm Intercombination Line of Strontium
Creators: name: Rudolph, Jan
name: Wilkason, Thomas
name: Nantel, Megan
name: Swan, Hunter
name: Holland, Connor M.
name: Jiang, Yijun
name: Garber, Benjamin E.
name: Carman, Samuel P.
name: Hogan, Jason M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report the first realization of large momentum transfer (LMT) clock atom interferometry. Using single-photon interactions on the strontium ${}^1S_0 - {}^3P_1$ transition, we demonstrate Mach-Zehnder interferometers with state-of-the-art momentum separation of up to $141\,\hbar k$ and gradiometers of up to $81\,\hbar k$. Moreover, we circumvent excited state decay limitations and extend the gradiometer duration to 50 times the excited state lifetime. Because of the broad velocity acceptance of the interferometry pulses, all experiments are performed with laser-cooled atoms at a temperature of $3\,μ\text{K}$. This work has applications in high-precision inertial sensing and paves the way for LMT-enhanced clock atom interferometry on even narrower transitions, a key ingredient in proposals for gravitational wave detection and dark matter searches.
description: 6 pages, 4 figures
Export Price Variability, Government Interventions and Producer Welfare: The Case of Egyptian Cotton
Creators: name: Bautista, Romeo M.
name: Gehlhar, Clemen G.
name: Bautista, Romeo M.
name: Gehlhar, Clemen G.
Publisher: name: Unknown
Year: 1997
Subjects: Crop Production/Industries
Demand and Price Analysis
International Relations/Trade

description: This paper examines the effects of government interventions during 1965-91 on short-run price stability and long-run price incentives, as well as the further repercussions on producer income and welfare, for the main agricultural export crop (cotton) in Egypt. In contrast to most existing studies on agricultural pricing policies in developing countries that focus on either price stability or producer incentives as the central policy goal, the analysis considers the simultaneous effects of alternative policy regimes on those two objectives. In fact, what matters to risk-averse producers is not price variability per se but the variability of their income. The analysis finds that the pure stabilization benefit from government interventions is heavily dominated by the transfer benefit so that producer welfare is significantly improved in moving to either of the two counterfactual regimes of sectoral and economywide free trade.
title: The Relationship between Pro-environmental Behavior, Economic Preferences, and Life Satisfaction: Empirical Evidence from Germany
title: MAGKS - Joint Discussion Paper Series in Economics
Creators: name: Haverkamp, Thilo K.G.
name: Welsch, Heinz
name: Ziegler, Andreas
Publisher: name: Philipps-Universität Marburg
Year: 2022
Subjects: Economics
Wirtschaft
Subjective well-being
incentivized donation experiment
pro-environmental behavior
economic preferences
life satisfaction

description: Based on representative data for 1614 citizens in Germany, this paper empirically examines the relationship between different types of environmental protection activities and subjective well-being (SWB) in terms of life satisfaction by specifically considering the role of economic pref-erences for this relationship. With respect to pro-environmental behavior, we differentiate be-tween stated non-climate environmental and climate protection activities as well as revealed climate protection activities, which are measured in an incentivized donation experiment and thus are more meaningful than stated climate protection activities. Our empirical analysis re-veals that climate protection activities are more robustly and more strongly positively correlated with life satisfaction than non-climate environmental protection activities. Furthermore, not only stated climate protection activities, but also revealed climate protection activities are sig-nificantly positively correlated with life satisfaction. These results suggest that climate protec-tion activities lead to stronger warm glow feelings and reputation gains than non-climate envi-ronmental protection activities. Our empirical analysis additionally shows that economic pref-erences play an important role since especially patience and trust, but also risk-taking prefer-ences and (less robust) altruism are significantly positively correlated with life satisfaction. In particular, economic preferences are also relevant for the relationship between pro-environmen-tal behavior and life satisfaction. When economic preferences are included in the econometric analysis, the estimated correlations between climate protection activities and life satisfaction become weaker and the estimated correlation between non-climate environmental protection activities and life satisfaction even becomes insignificant. These results strongly suggest omit-ted variable biases in cross-sectional econometric analyses of the relationship between pro-environmental behavior and SWB when economic preferences are not included as control variables.
Neural Bayes estimators for censored inference with peaks-over-threshold models
Creators: name: Richards, Jordan
name: Sainsbury-Dale, Matthew
name: Zammit Mangion, Andrew
name: Huser, Raphael
Publisher: name: University of Wollongong
Year: 2025
Subjects: classificationCode: 4905
subject: Statistics
subject: FOS: Mathematics
classificationCode: 52
subject: Psychology
subject: FOS: Psychology
classificationCode: 46
subject: Information and computing sciences
classificationCode: 4611
subject: Machine learning

description: Making inference with spatial extremal dependence models can be computationally burdensome since they involve intractable and/or censored likelihoods. Building on recent advances in likelihood-free inference with neural Bayes estimators, that is, neural networks that approximate Bayes estimators, we develop highly efficient estimators for censored peaks-over-threshold models that use augmented data to encode censoring information in the neural network input. Our new method provides a paradigm shift that challenges traditional censored likelihood-based inference methods for spatial extremal dependence models. Our simulation studies highlight significant gains in both computational and statistical efficiency, relative to competing likelihood-based approaches, when applying our novel estimators to make inference with popular extremal dependence models, such as max-stable, r-Pareto, and random scale mixture process models. We also illustrate that it is possible to train a single neural Bayes estimator for a general censoring level, precluding the need to retrain the network when the censoring level is changed. We illustrate the efficacy of our estimators by making fast inference on hundreds-of-thousands of high-dimensional spatial extremal dependence models to assess extreme particulate matter 2.5 microns or less in diameter concentration over the whole of Saudi Arabia.
Optimal Price Stabilization Policies for Staple Grains: The Case of Maize in Eastern and Sothern Africa
Creators: name: Gerrard, Christopher D.
name: Spriggs, John
name: Gerrard, Christopher D.
name: Spriggs, John
Publisher: name: Unknown
Year: 1997
Subjects: Crop Production/Industries
Demand and Price Analysis

description: In the context of (a) stability in domestic maize production, (b) a significant divergence between import and export parity prices for maize, and (c) random variability in world maize prices, Eastern and Southern African governments have for many years attempted to reduce the instability in domestic maize prices. However, governments face a trade-off between the fiscal costs of price stabilization and the degree of price variability allowed. This paper presents a dynamic stochastic simulation model that not only explores the nature of this trade-off, but also determines optimal government policies for domestic target prices and domestic target levels of stock in order to minimize the expected fiscal costs of maintaining given degrees of price stability.
Distinguishability of the Bell states
Creators: name: Ghosh, Sibasish
name: Kar, Guruprasad
name: Roy, Anirban
name: De, Aditi Sen
name: Sen, Ujjwal
Publisher: name: arXiv
Year: 2001
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: More than two multipartite orthogonal states cannot always be discriminated (with certainty) if only local operations and classical communication (LOCC) are allowed. Using an existing inequality among the measures of entanglement, we show that any three Bell states cannot be discriminated by LOCC. Exploiting the inequality, we calculate the distillable entanglement of a certain class of (4\otimes 4) mixed states.
description: 3 Pages Latex, references added, minor changes
Broadband and robust adiabatic second-harmonic generation by a temperature gradient in birefringently phase-matched lithium triborate crystal
Creators: name: Rozenberg, Eyal
name: Arie, Ady
Publisher: name: arXiv
Year: 2019
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Phase-matched nonlinear processes exhibit a tradeoff between the conversion efficiency and the acceptance bandwidth. Adiabatic nonlinear processes, in which the phase mismatch varies slowly along the interaction length, enable us to overcome this tradeoff, allowing an efficient frequency conversion with broad spectral and thermal bandwidths. Until now, the variation in the phase mismatch condition was mainly based on quasi-phase matching in ferroelectric crystals. However, this solution is limited to low power sources. Here, instead, we study the adiabatic second harmonic in birefringently phase-matched lithium triborate crystal, enabling us to handle much higher power levels. The variation in the phase mismatch is achieved by inducing a temperature gradient along the crystal. By using a 50 mm long crystal, the adiabatic process provided a temperature bandwidth of 18-celsius degrees, 5.4 times wider than what is achieved when the same crystal is held at the fixed phasematching temperature. The conversion efficiency exceeded 60% for a 0.9 millijoule pump pulse.
Heavy Holographic QCD
Creators: name: Kovensky, Nicolas
name: Schmitt, Andreas
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the phase structure of the Witten-Sakai-Sugimoto model in the plane of temperature and baryon chemical potential, including the effect of a nonzero current quark mass. Our study is performed in the decompactified limit of the model, which, at least regarding the chiral phase transition, appears to be closer to real-world QCD than the original version. Following earlier studies, we account for the quark mass in an effective way based on an open Wilson line operator whose expectation value is identified with the chiral condensate. We find that the quark mass stabilizes a configuration with string sources and point out that this phase plays an important role in the phase diagram. Furthermore, we show that the quark mass breaks up the first-order chiral phase transition curve and introduces critical points to the phase diagram. Similarities of the phase structure to other holographic approaches and to lattice simulations of "heavy QCD" are found and discussed. By making holographic QCD more realistic, our results open the door to a better understanding of real-world strongly coupled hot and dense matter.
description: 34 pages, 7 figures, v3: typos corrected in Eqs. (2.24), (3.2), (3.3), (3.28), and the caption of Fig 3 corrected
title: Is a Secondary Currency Essential? – On the Welfare Effects of a New Currency
title: MAGKS - Joint Discussion Paper Series in Economics
Creators: name: Fuchs, Max
name: Michaelis, Jochen
Publisher: name: Philipps-Universität Marburg
Year: 2022
Subjects: dual currency regime
Economics
Wirtschaft
welfare comparison
digital money

description: The coexistence of cash and digital currencies constitutes a system of parallel currencies. This paper tackles the question whether a new (digital) currency is essential: Does a new currency allow for a better resource allocation even if a fully accepted currency is in circulation and still remains in circulation? Using the dual currency search model of Kiyotaki and Wright (1993), we show how the introduction of a secondary currency affects average utility. There is some scope for a welfare improvement, the welfare effect depends on differences in returns and costs, and, in particular, the fraction of cash traders who will be replaced by digital money traders.
Optimal Pricing of Primary Commodities in Developing Countries: A Model from Sub-Saharan Africa
Creators: name: Ehui, M.K.
name: Ehui, Simeon K.
name: Ehui, M.K.
name: Ehui, Simeon K.
Publisher: name: Unknown
Year: 1997
Subjects: Demand and Price Analysis
International Development

description: In most developing countries, especially in sub-Saharan Africa, prices received by fanners are not optimal in the sense that they do not optimize government revenues. In this paper a dynamic model for optimal pricing of primary commodities is developed. The model and results demonstrate that optimal prices depend on marginal cost of the commodity stock, the exporting country's supply elasticity, the importing country's demand elasticity, the social rate of time discount. Therefore when the model is cast in a static framework, or the foreign elasticity of demand is not accounted for, the result could be biased.
The Hidden History of Women Editing Shakespeare, 1800-1950
Creators: name: Yarn, Molly Greer
Publisher: name: Apollo - University of Cambridge Repository
Year: 2019
Subjects: Women
Editors
Editions
Shakespeare
Textual History

description: When the call for gender diversity in the Shakespearean editorial field first gained strength in the 1980s and 1990s, it initiated a major and necessary course correction for a profession that had been dominated by men for over three centuries; however, the discussion it sparked focused primarily on women’s connections with the present and future of editing, allocating only limited time and resources to the past. Thus, until now, the extent of women’s involvement in editorial history has not been fully explored, and a female editorial tradition dating back to the early nineteenth century has been largely neglected. This dissertation presents the first large-scale overview of women editing Shakespeare between 1800 and 1950 in the United States and the United Kingdom, drawing on extensive archival resources, biographical materials, and the editions prepared by women to demonstrate that women editors existed in larger numbers than previously understood, and that their work contains numerous avenues for scholarly investigation. It enriches the landscape of nineteenth-century textual work and offers insights into the process of textual canon formation and the evolution of the editorial role. The Introduction begins by interrogating the role of editor and considering how the issues surrounding both the editor and textual labour in general contribute to the absence of women from editorial history. Chapter One looks more closely at women’s literary labour, focusing on women involved in the New Shakspere Society during the nineteenth century. Following Chapter One is a brief section on the uses and formats of student editions, the form most often produced by women editors of Shakespeare. Chapter Two discusses American student editions and the network of women editors active in the United States around the fin de siècle. Chapter Three surveys the presentation of nationalism, patriotism, imperialism, and colonialism in British school editions of Henry V and The Tempest. Preceding Chapter Four is an introduction to women who edited authors other than Shakespeare or who performed types of bibliographical labour other than editing. Chapter Four offers an overview of the New Bibliography of the early twentieth century, and examines how changing conditions in academia, editing, and publishing led to a decrease in women editors by the mid-century. There are two appendices containing additional information. The first is a quick reference guide to women who prepared editions of Shakespeare between 1800 and 1950, including biographies and lists of their editions. The second appendix is a list of editions prepared by women since 1800.
A Numerical Analysis Methodology for the Strengthening of Deep Cap Beams
Creators: name: Salgado, Rafael
name: Guner, Serhan
Publisher: name: figshare
Year: 2019
Subjects: subject: 90506 Structural Engineering
subject: FOS: Civil engineering

description: A significant number of in-service bridges have been subjected to loads above their original design capacities due to the increase in traffic and transported freight in the past decades. Externally bonded fiber reinforced polymers (FRP) is a non-destructive retrofit technique that has become common for the strengthening of overloaded cap beams of bridges. However, there is a lack of analysis methods for the retrofitted cap beams that can accurately predict the retrofitted structural response while accounting for the critical material behaviors such as bond-slip relationships, confinement effects, and redistribution of stresses. In this study, an analysis methodology using nonlinear finite element models is proposed for cap beams retrofitted with externally bonded FRP fabrics. A two-stage verification of the proposed methodology was employed: a constitutive modeling and critical behavior of materials verification using experimental results available in the literature; and a system-level load capacity determination using a large, in-situ structure. The proposed methodology was able to capture the FRP-concrete composite structural behavior and the experimentally observed failure modes. The FRP retrofit layout created using the results of this study increased the capacity of the initially overloaded cap beam in 27%, granting it a 6% extra capacity under its ultimate loading condition.
Short Baseline Accelerator-Based Neutrino Oscillation Searches
Creators: name: Eitel, K.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We review the status of the search for neutrino oscillations in the short baseline regime with experiments at accelerators. The evidence for numubar->nuebar from the LSND experiment is compared with the negative results of the KARMEN numubar->nuebar search and with the results from NOMAD and NuTeV in the same flavor mixing channel. We describe the upcoming MiniBooNE experiment which should be sufficiently sensitive to unambiguously confirm or completely rule out the LSND signal.
description: Invited talk at the XXII Physics in Collision Conference (PIC02), Stanford, Ca, USA, June 2002, 12 pages, LaTeX, 10 eps figures. PSN SAAT03
The Political Economic Myth and Reality of Agricultural Producer Price Support: The 'Agricultural Treadmill' Revisited
Creators: name: Witzke, Harald Von
name: Hausner, Ulrich
name: Witzke, Harald Von
name: Hausner, Ulrich
Publisher: name: Unknown
Year: 1997
Subjects: Agribusiness
Agricultural and Food Policy
Agricultural Finance
Political Economy

description: The myth of agricultural price policy is that it can counteract the economic effect of the 'agricultural treadmill'. In this paper it is shown that this is not the case. The political economic reality of farm price programs is that a growth in agricultural supply leads to lower levels of price support, all other things bring eqtml. In US wheat and grain policy, the extent of endogenous policy adjustments has been in the same order of magnitude as price changes that would have occurred without price policy.