cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Slow scrambling in extremal BTZ and microstate geometries
Creators: name: Craps, Ben
name: De Clerck, Marine
name: Hacker, Philip
name: Nguyen, Kévin
name: Rabideau, Charles
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Out-of-time-order correlators (OTOCs) that capture maximally chaotic properties of a black hole are determined by scattering processes near the horizon. This prompts the question to what extent OTOCs display chaotic behaviour in horizonless microstate geometries. This question is complicated by the fact that Lyapunov growth of OTOCs requires nonzero temperature, whereas constructions of microstate geometries have been mostly restricted to extremal black holes. In this paper, we compute OTOCs for a class of extremal black holes, namely maximally rotating BTZ black holes, and show that on average they display "slow scrambling", characterized by cubic (rather than exponential) growth. Superposed on this average power-law growth is a sawtooth pattern, whose steep parts correspond to brief periods of Lyapunov growth associated to the nonzero temperature of the right-moving degrees of freedom in a dual conformal field theory. Next we study the extent to which these OTOCs are modified in certain "superstrata", horizonless microstate geometries corresponding to these black holes. Rather than an infinite throat ending on a horizon, these geometries have a very deep but finite throat ending in a cap. We find that the superstrata display the same slow scrambling as maximally rotating BTZ black holes, except that for large enough time intervals the growth of the OTOC is cut off by effects related to the cap region, some of which we evaluate explicitly.
description: 47 pages, 9 figures. Added references and fixed typos, match published version
Virasoro generators and the dS_3/CFT_2 correspondence
Creators: name: Ness, Scott
name: Siopsis, George
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss the quantization of a scalar field in three-dimensional asymptotic de Sitter space. We obtain explicit expressions for the Noether currents generating the isometry group in terms of the modes of the scalar field and the Liouville gravitational field. We extend the SL(2,C) algebra of the Noether charges to a full Virasoro algebra by introducing non-local conserved charges. The Virasoro algebra has the expected central charge in the weak coupling limit (large central charge c=3l/2G, where l is the dS radius and G is Newton's constant). We derive the action of the Virasoro charges on states in the boundary CFT thus elucidating the dS/CFT correspondence.
description: 15 pages (incl. 1 fig)
Endogenous Business Cycles and the Economic Response to Exogenous Shocks
Creators: name: Hallegatte, Stephane
name: Ghil, Michael
name: Hallegatte, Stephane
name: Ghil, Michael
Publisher: name: Unknown
Year: 2007
Subjects: Community/Rural/Urban Development

description: In this paper, we investigate the macroeconomic response to exogenous shocks, namely natural disasters and stochastic productivity shocks. To do so, we make use of an endogenous business cycle model in which cyclical behavior arises from the investment-profit instability; the amplitude of this instability is constrained by the increase in labor costs and the inertia of production capacity and thus results in a finite-amplitude business cycle. This model is found to exhibit a larger response to natural disasters during expansions than during recessions, because the exogenous shock amplifies pre-existing disequilibria when occurring during expansions, while the existence of unused resources during recessions allows for damping the shock. Our model also shows a higher output variability in response to stochastic productivity shocks during expansions than during recessions. This finding is at odds with the classical real-cycle theory, but it is supported by the analysis of quarterly U.S. Gross Domestic Product series; the latter series exhibits, on average, a variability that is 2.6 times larger during expansions than during recessions.
Design study and spectroscopic performance of SOI pixel detector with a pinned depleted diode structure for X-ray astronomy
Creators: name: Yukumoto, Masataka
name: Mori, Koji
name: Takeda, Ayaki
name: Nishioka, Yusuke
name: Yonemura, Syuto
name: Izumi, Daisuke
name: Iwakiri, Uzuki
name: Tsuru, Takeshi G.
name: Kurachi, Ikuo
name: Hagino, Kouichi
name: Arai, Yasuo
name: Kohmura, Takayoshi
name: Tanaka, Takaaki
name: Kimura, Miraku
name: Fuchita, Yuta
name: Yoshida, Taiga
name: Ikeda, Tomonori
Publisher: name: arXiv
Year: 2024
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We have been developing silicon-on-insulator (SOI) pixel detectors with a pinned depleted diode (PDD) structure, named "XRPIX", for X-ray astronomy. The PDD structure is formed in a thick p-type substrate, to which high negative voltage is applied to make it fully depleted. A pinned p-well is introduced at the backside of the insulator layer to reduce a dark current generation at the Si-SiO$_{2}$ interface and to fix the back-gate voltage of the SOI transistors. An n-well is further introduced between the p-well and the substrate to make a potential barrier between them and suppress a leakage current. An optimization study on the n-well dopant concentration is necessary because a higher dopant concentration could result in a higher potential barrier but also in a larger sense-node capacitance leading to a lower spectroscopic performance, and vice versa. Based on a device simulation, we fabricated five candidate chips having different n-well dopant concentrations. We successfully found out the best n-well design, which suppressed a large leakage current and showed satisfactory X-ray spectroscopic performance. Too low and too high n-well dopant concentration chips showed a large leakage current and degraded X-ray spectroscopic performance, respectively. We also found that the dependency of X-ray spectroscopic performance on the n-well dopant concentration can be largely explained by the difference in sense-node capacitance.
description: 9 pages, 9 figures, accepted for publication in NIM A
Public Policies for Contaminated Site Cleanup: The Opinions of the Italian Public
Creators: name: Turvani, Margherita
name: Chiabai, Aline
name: Alberini, Anna
name: Tonin, Stefania
name: Turvani, Margherita
name: Chiabai, Aline
name: Alberini, Anna
name: Tonin, Stefania
Publisher: name: Unknown
Year: 2007
Subjects: Environmental Economics and Policy

description: Cleaning up contaminated sites is one of the most important environmental policy priorities in many countries. Remediation of contaminated sites is attractive because it reduces risks to human health and ecological systems, and brings a host of potential social and economic benefits. Even when the burden of paying for cleanup is imposed on the parties that are responsible for the contaminated sites, in many countries government programs are established for enforcement purposes, to set cleanup standards, and to address contamination at those sites where the responsible parties are no longer in existence or do not have the means to pay for cleanup (orphan sites). This paper presents the results of a survey of the Italian public where we ask citizens to report their opinions about possible goals for such government programs and for cleanup. Our survey respondents are generally in favor of broad-based programs that protect the health of a diverse population - without restricting attention to cleanup beneficiaries in specific age groups or to specific exposure pathways. They also in favor of permanent remedies, even if they cost more, and of cleaning up sites even when the health risk reduction are experienced in the future, as is usually the case with carcinogenic contaminants.
Philipp W. Stockhammer / Joseph Maran (eds), Appropriating Innovations. Entangled Knowledge in Eurasia 5000–1500 BCE
Creators: name: Brysbaert, Ann
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2021

description: Rezension zu: Philipp W. Stockhammer / Joseph Maran (eds), Appropriating Innovations. Entangled Knowledge in Eurasia 5000–1500 BCE. Oxbow Books, Oxford, Philadelphia 2017. ISBN 978-1-78570-724-7. ISBN 978-1-78570-725-4 (E-book). iv + 268 pages with numerous tables and figures
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 98 2020(2021)
Symplectic embeddings, homotopy algebras and almost Poisson gauge symmetry
Creators: name: Kupriyanov, Vladislav G.
name: Szabo, Richard J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: Symplectic Geometry (math.SG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We formulate general definitions of semi-classical gauge transformations for noncommutative gauge theories in general backgrounds of string theory, and give novel explicit constructions using techniques based on symplectic embeddings of almost Poisson structures. In the absence of fluxes the gauge symmetries close a Poisson gauge algebra and their action is governed by a $P_\infty$-algebra which we construct explicitly from the symplectic embedding. In curved backgrounds they close a field dependent gauge algebra governed by an $L_\infty$-algebra which is not a $P_\infty$-algebra. Our technique produces new all orders constructions which are significantly simpler compared to previous approaches, and we illustrate its applicability in several examples of interest in noncommutative field theory and gravity. We further show that our symplectic embeddings naturally define a $P_\infty$-structure on the exterior algebra of differential forms on a generic almost Poisson manifold, which generalizes earlier constructions of differential graded Poisson algebras, and suggests a new approach to defining noncommutative gauge theories beyond the gauge sector and the semi-classical limit based on $A_\infty$-algebras.
description: 60 pages; v2: introduction expanded, typos corrected; v3: minor changes, references added; Final version published in Journal of Physics A
Narrow bandwidth gamma comb from nonlinear Compton scattering using the polarization gating technique
Creators: name: Valialshchikov, M. A.
name: Kharin, V. Yu.
name: Rykovanov, S. G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Nonlinear Compton scattering is a promising source of bright gamma-rays. Using readily available intense laser pulses to scatter off the energetic electrons on the one hand allows to significantly increase the total photon yield, but on the other hand leads to a dramatic spectral broadening of fundamental emission line as well as its harmonics due to the laser pulse shape induced ponderomotive effects. In this paper we propose to avoid ponderomotive broadening in harmonics by using the polarization gating technique - a well-known method to construct a laser pulse with temporally varying polarization. We show that by restricting harmonic emission only to the region near the peak of the pulse, where the polarization is linear, it is possible to generate a bright narrow bandwidth comb in the gamma region.
Synthesen, Strukturen und Eigenschaften neuer metallhaltiger ionischer Flüssigkeiten und Komplexverbindungen
Creators: name: Giltzau, Niels Ole
Publisher: name: Universität Rostock
Year: 2020
Subjects: subject: 540 Chemistry & allied sciences

description: Die Dissertation umfasst 71 neue metallhaltige ionische Flüssigkeiten und Komplexverbindungen, die umfangreich charakterisiert wurden. Als Metallkomplexanionen wurden u. a. 3d Übergangsmetallionen mit Halogenido- oder Pseudohalogenido-Liganden eingesetzt sowie mehrkernige Edel- und Hauptgruppen-Metallkomplexanionen. Als Komplexkationen wurden Tetramethylguanidinium- (HTMG) und Hexamethylguanidinium- (HMG) Kationen, Verbindungen mit alkylierten 1,4-Diazabicyclo[2.2.2]octan-Kationen (DABCO), pyridiniumbasierte Kationen sowie N-Adamantyl-N‘-ethylimidazolium-Kationen verwendet.
First-passage times for random walks in bounded domains
Creators: name: Condamin, S
name: Benichou, O.
name: Moreau, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present a novel computational method of first-passage times between a starting site and a target site of regular bounded lattices. We derive accurate expressions for all the moments of this first-passage time, validated by numerical simulations. Their range of validity is discussed. We also consider the case of a starting site and two targets. In addition, we present the extension to continuous Brownian motion. These results are of great relevance to any system involving diffusion in confined media.
description: to appear in Phys. Rev. Lett
Finite temperature effects in antiferromagnetism of nuclear matter
Creators: name: Isayev, A. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The influence of the finite temperature on the antiferromagnetic (AFM) spin ordering in symmetric nuclear matter with the effective Gogny interaction is studied within the framework of a Fermi liquid formalism. It is shown that the AFM spin polarization parameter of partially polarized nuclear matter for low enough temperatures increases with temperature. The entropy of the AFM spin state for some temperature range is larger than the entropy of the normal state. Nerveless, the free energy of the AFM spin state is always less than the free energy of the normal state and, hence, the AFM spin polarized state is preferable for all temperatures below the critical temperature.
description: To appear in PRC; some references and comments added
Enhancing Acute Kidney Injury Prediction through Integration of Drug Features in Intensive Care Units
Creators: name: Manalu, Gabriel D. M.
name: Christian, Mulomba Mukendi
name: You, Songhee
name: Choi, Hyebong
Publisher: name: arXiv
Year: 2024
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The relationship between acute kidney injury (AKI) prediction and nephrotoxic drugs, or drugs that adversely affect kidney function, is one that has yet to be explored in the critical care setting. One contributing factor to this gap in research is the limited investigation of drug modalities in the intensive care unit (ICU) context, due to the challenges of processing prescription data into the corresponding drug representations and a lack in the comprehensive understanding of these drug representations. This study addresses this gap by proposing a novel approach that leverages patient prescription data as a modality to improve existing models for AKI prediction. We base our research on Electronic Health Record (EHR) data, extracting the relevant patient prescription information and converting it into the selected drug representation for our research, the extended-connectivity fingerprint (ECFP). Furthermore, we adopt a unique multimodal approach, developing machine learning models and 1D Convolutional Neural Networks (CNN) applied to clinical drug representations, establishing a procedure which has not been used by any previous studies predicting AKI. The findings showcase a notable improvement in AKI prediction through the integration of drug embeddings and other patient cohort features. By using drug features represented as ECFP molecular fingerprints along with common cohort features such as demographics and lab test values, we achieved a considerable improvement in model performance for the AKI prediction task over the baseline model which does not include the drug representations as features, indicating that our distinct approach enhances existing baseline techniques and highlights the relevance of drug data in predicting AKI in the ICU setting
description: 9 pages, 2 tables
Local Food Marketing as a Development Opportunity for Small UK Agri-Food Businesses
Creators: name: Hingley, Martin
name: Boone, Julie
name: Haley, Simon
Publisher: name: CentMA
Year: 2010
Subjects: local food; marketing; small-business development; UK

description: The study explores local food as a marketing opportunity for small food producers and identifies barriers to development. Research was conducted primarily through depth interviews, supplemented by a survey of food marketing group members in North-West England. The results of this local study were consistent with national survey data showing increasing consumer interest in food provenance, traceability and support for the local economy. Lack of an official and recognised definition of the term "local food" hindered marketing. Restricted access to finance and the burden of regulations were identified as barriers. Further, small business success was subjective and difficult to identify, since goals may be based on sustaining a lifestyle rather than profit.
description: International Journal on Food System Dynamics, Vol 1, No 3 (2010)
Stefanie Bergemann, Zauschwitz (Landkreis Leipzig): Siedlung und Gräber eines neolithischen Fundplatzes
Creators: name: Pyzel, Joanna
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2021

description: Rezenion zu: Stefanie Bergemann, Zauschwitz (Landkreis Leipzig): Siedlung und Gräber eines neolithischen Fundplatzes. Universitätsforschungen zur prähistorischen Archäologie Band 314 = Human Development in Landscapes Band 13. Verlag Dr. Rudolf Habelt, Bonn 2018. ISBN 978-3-7749-4155-7. 436 pages with 251 figures, 36 tables, and 42 plates, appendix on CD
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 98 2020(2021)
Risk Premiums and the Storage of Agricultural Commodities
Creators: name: Lin, Hua
name: Fortenbery, T. Randall
name: Lin, Hua
name: Fortenbery, T. Randall
Publisher: name: Unknown
Year: 2006
Subjects: subject: Marketing
subject: FOS: Economics and business

description: The existence of a commodity market risk premium has attracted the interest of researchers for several decades. Most attempts to measure risk premiums have been focused on futures markets. However, if the risk premium is a payment made by hedgers (as suggested by Keynes) to reduce their risk profile, then the risk being reduced originates in the cash market. This suggests that the risk premium may also originate in the cash market. As such, the search for a risk premium should focus on the cash market, and, given Working's Supply of Storage Curve, should be measured as a function of stored inventory. This paper develops an expected utility based model that separates the risk premium from other storage incentives, and illustrates the role of the cash market risk premium on the storage decisions of two different market agents.
Stephen Shennan, The First Farmers of Europe. An Evolutionary Perspective
Creators: name: Scharl, Silviane
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2021

description: Rezension zu: Stephen Shennan, The First Farmers of Europe. An Evolutionary Perspective. Cambridge World Archaeology. Cambridge University Press, Cambridge 2018. ISBN 978-1-108-42292-5 (Hardback). ISBN 978-1-108-43521-5 (Paperback). ISBN 978-1-108-39730-8 (E-Book). ISBN 978-1-108-38602-9 (online). doi: https://doi.org/10.1017/9781108386029. xviii + 253 Seiten mit 61 Abbildungen
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 98 2020(2021)
title: Triangle meshes of shadow-recieving surfaces of ancient sundials
Creators: name: Hanik, Martin
name: von Tycowicz, Christoph
Year: 2022

description: This repository contains triangle meshes of the shadow-recieving surfaces of 13 ancient sundials; three of them are from Greece and 10 from Italy. The meshes are in correspondence.
Polaronic Quasiparticles in a Strongly Correlated Electron Band
Creators: name: Koller, W.
name: Hewson, A. C.
name: Edwards, D. M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We show that a strongly renormalized band of polaronic quasiparticle excitations is induced at the Fermi level of an interacting many-electron system on increasing the coupling of the electrons to local phonons. We give results for the local density of states at zero temperature both for the electrons and phonons. The polaronic quasiparticles satisfy Luttinger's theorem for all regimes considered, and their dispersion shows a kink similar to that observed experimentally in copper oxides. We calculate the quasiparticle weight factor $z$ and deduce the local effective inter-quasiparticle interaction $\tilde U$. Our calculations are based on the dynamical mean field theory and the numerical renormalization group for the hole-doped Holstein-Hubbard model and large on-site repulsion.
description: 4 pages, 8 figures
[Elicitation of sentences, story "My Son"]
Creators: name: Jerónimo Laureano, Miguel
name: McFarland, Teresa
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: subject: tlp

description: 9 WAV files. Corresponds to pp. 94-96, etc. of related field notes. Story is file 009, with transcription and translation on pp. 99-101 and 116-118.
A first order deconfinement transition in large N Yang-Mills theory on a small 3-sphere
Creators: name: Aharony, Ofer
name: Marsano, Joseph
name: Minwalla, Shiraz
name: Papadodimas, Kyriakos
name: Van Raamsdonk, Mark
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We give an analytic demonstration that the 3+1 dimensional large N SU(N) pure Yang-Mills theory, compactified on a small 3-sphere so that the coupling constant at the compactification scale is very small, has a first order deconfinement transition as a function of temperature. We do this by explicitly computing the relevant terms in the canonical partition function up to 3-loop order; this is necessary because the leading (1-loop) result for the phase transition is precisely on the borderline between a first order and a second order transition. Since numerical work strongly suggests that the infinite volume large N theory also has a first order deconfinement transition, we conjecture that the phase structure is independent of the size of the 3-sphere. To deal with divergences in our calculations, we are led to introduce a novel method of regularization useful for nonabelian gauge theory on a 3-sphere.
description: 63 pages (40 pages + 2 appendices), 6 figures, harvmac. v2: minor corrections
PAMI text image
Creators: name: Moreau, Thomas
Publisher: name: figshare
Year: 2021
Subjects: subject: Artificial Intelligence and Image Processing
subject: FOS: Computer and information sciences

description: The text image generated from a text of 5000/3000 and 1000 characters drawn uniformly from the letters PAMI and 3 whitespaces and a dictionary of the individual images of the 4 letters PAMI.
Understanding the U.S. Generic Advertising System and its Role in Information Management among Commodities and Food Systems
Creators: name: Ward, Ron W.
Publisher: name: CentMA
Year: 2010

description: Information is essential to growing demand and maintaining efficiency throughout the supply chain for any commodity. The U.S. model for facilitating producers and first handlers having a proactive role in the flow of information about their products is through commodity checkoff programs. These industry administrated programs fund generic advertising and promotions usually through a mandatory assessment. Success of any of these programs depend on the administrative structure, the message, the ability to judge performance, and the overall equity in sharing in the program created benefits.
description: International Journal on Food System Dynamics, Vol 1, No 3 (2010)
Entanglement and Teleportation of Gaussian States of the Radiation Field
Creators: name: Marian, Paulina
name: Marian, Tudor A.
name: Scutaru, Horia
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a reliable entanglement measure for a two-mode squeezed thermal state of the quantum electromagnetic field in terms of its Bures distance to the set of all separable states of the same kind. The requisite Uhlmann fidelity of a pair of two-mode squeezed thermal states is evaluated as the maximal transition probability between two four-mode purifications. By applying the Peres-Simon criterion of separability we find the closest separable state. This enables us to derive an insightful expression of the amount of entanglement. Then we apply this measure of entanglement to the study of the Braunstein-Kimble protocol of teleportation. We use as input state in teleportation a mixed one-mode Gaussian state. The entangled state shared by the sender (Alice) and the receiver (Bob) is taken to be a two-mode squeezed thermal state. We find that the properties of the teleported state depend on both the input state and the entanglement of the two-mode resource state. As a measure of the quality of the teleportation process, we employ the Uhlmann fidelity between the input and output mixed one-mode Gaussian states.
description: With the exception of Section 5 which contains original results, this paper is an overview of some of our previous work. We hereby bring the article to the attention of a broader audience. Our results on teleportation of mixed one-mode Gaussian states compare interestingly with several recently published papers: 1) C. M. Caves and K. Wodkiewicz, Phys. Rev. Lett. 93, 040506 (2004); Open Sys. & Information Dyn. 11, 309 (2004); 2) M. Ban, Phys. Rev. A 69, 054304 (2004); J. Phys. A 38, 3595 (2005); 3) L. Tian and S. M. Carr, quant-ph/0512148/2005
Improving XYG3-type Doubly Hybrid Approximation using Self-Interaction Corrected SCAN Density and Orbitals via the PZ-SIC Framework: the xDH@SCAN(SIC) Approach
Creators: name: Bi, Sheng
name: Wang, Shirong
name: Zhang, Igor Ying
name: Xu, Xin
Publisher: name: arXiv
Year: 2024
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: XYG3-type doubly hybrid approximations (xDH) have gained a widespread recognition for their accuracy in describing a diverse range of chemical and physical interactions. However, a recent study (J. Phys. Chem. 2021, 12, 800-807) has highlighted the limitation of xDH methods in calculating the dissociation of the NaCl molecule. This issue has been related to the density and orbitals used for evaluating the energy in xDH methods, which are obtained from lower-rung hybrid density functional approximations (DFAs) and display substantial density errors in the dissociation limit. In this work, we systematically investigate the influence of density on several challenging datasets and find that the xDH methods are less sensitive to the density errors compared to semi-local and hybrid DFAs. Furthermore, we demonstrate that the self-interaction corrected SCAN density offers superior accuracy compared to the self-consistent SCAN density and Hartree-Fock (HF) density, as evidenced by the charge analysis on the dissociation of heterodimers, such as NaCl and LiF. Building on these insights, we propose a 5-parameter xDH method using the SCAN density and orbitals corrected by the PZ-SIC scheme. This new xDH@SCAN(SIC) method provides a balanced and accurate description across a wide range of challenging systems.
Existential questions in (relatively) hyperbolic groups {\it and} Finding relative hyperbolic structures
Creators: name: Dahmani, Francois
Publisher: name: arXiv
Year: 2005
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20F10, 20F67

description: This arXived paper has two independant parts, that are improved and corrected versions of different parts of a single paper once named "On equations in relatively hyperbolic groups". The first part is entitled "Existential questions in (relatively) hyperbolic groups". We study there the existential theory of torsion free hyperbolic and relatively hyperbolic groups, in particular those with virtually abelian parabolic subgroups. We show that the satisfiability of systems of equations and inequations is decidable in these groups. In the second part, called "Finding relative hyperbolic structures", we provide a general algorithm that recognizes the class of groups that are hyperbolic relative to abelian subgroups.
description: Two independant parts 23p + 9p, revised. To appear separately in Israel J. Math, and Bull. London Math. Soc. respectively
Preferred sunspot longitudes: Non-axisymmetry and differential rotation
Creators: name: Usoskin, I. G.
name: Berdyugina, S. V.
name: Poutanen, J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: As recently found, the distribution of sunspots is non-axisymmetric and spot group formation implies the existence of two persistent active longitudes separated by 180 degrees. Here we quantitatively study the non-axisymmetry of sunspot occurrence. In a dynamic reference frame inferred from the differential rotation law, the raw sunspot data show a clear clustering around the persistent active longitudes. The differential rotation describing the dynamic frame is quantified in terms of the equatorial angular velocity and the differential rotation rate, which appear to be significantly different from those for individual sunspots. This implies that the active longitudes are not linked to the depth of sunspot anchoring. In order to quantify the observed effect, we introduce a measure of the non-axisymmetry of the sunspot distribution. The non-axisymmetric component is found to be highly significant, and the ratio of its strength to that of the axisymmetric one is roughly 1:10. This provides additional constraints for solar dynamo models.
description: 7 pages, 8 figures, Astronomy and Astrophysics, in press
Understanding Community Impacts: A Tool for Evaluating Externalities from Local Bio-Fuels Production
Creators: name: Fortenbery, T. Randall
name: Deller, Steven C.
name: Fortenbery, T. Randall
name: Deller, Steven C.
Publisher: name: Unknown
Year: 2006
Subjects: Community/Rural/Urban Development
Resource /Energy Economics and Policy

description: The popularity of public investment in local bio-fuels production as a rural development initiative is growing. An important consideration in determining the level of public support for a plant's development, however, is accurately measuring public externalities resulting from plant activity. The purpose of this research was to first develop a set of community multipliers associated with various bio-fuel plant configurations, and then develop an easy to use tool that allows local communities to measure potential benefits based on varying levels of plant activity.
Long-lived Sterile Neutrinos at the LHC in Effective Field Theory
Creators: name: de Vries, Jordy
name: Dreiner, Herbert K.
name: Günther, Julian Y.
name: Wang, Zeren Simon
name: Zhou, Guanghui
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the prospects of a displaced-vertex search of sterile neutrinos at the Large Hadron Collider (LHC) in the framework of the neutrino-extended Standard Model Effective Field Theory ($ν$SMEFT). The production and decay of sterile neutrinos can proceed via the standard active-sterile neutrino mixing in the weak current, as well as through higher-dimensional operators arising from decoupled new physics. If sterile neutrinos are long-lived, their decay can lead to displaced vertices which can be reconstructed. We investigate the search sensitivities for the ATLAS/CMS detector, the future far-detector experiments: AL3X, ANUBIS, CODEX-b, FASER, MATHUSLA, and MoEDAL-MAPP, and at the proposed fixed-target experiment SHiP. We study scenarios where sterile neutrinos are predominantly produced via rare charm and bottom mesons decays through minimal mixing and/or dimension-six operators in the $ν$SMEFT Lagrangian. We perform simulations to determine the potential reach of high-luminosity LHC experiments in probing the EFT operators, finding that these experiments are very competitive with other searches.
description: v1: 35 pages + Appendix, 12 figures, 17 tables; v2: accepted for publication in JHEP, typos corrected, reasoning for neglecting direct production of sterile neutrinos via parton collisions added upon referee's suggestion, results unchanged
Vortex-induced vibration of a square cylinder in wind tunnel
Creators: name: Amandolese, X.
name: Hémon, P.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: An experimental study of the vortex-induced-vibration of a flexibly mounted rigid square cylinder in a uniform airflow is presented. For this high mass ratio configuration, transverse oscillations are measured in detail for reduced velocities ranging from 5 to 20. In the lock-in region and starting from rest, the cylinder motion exhibits a transient regime followed by a limit cycle oscillation regime. New experimental data are provided in term of amplitudes and frequencies of the limit cycle oscillations. The transient behaviour is also characterized by measuring the growth rate of the oscillations amplitude.
Is Tourism-Based Development Good for the Poor? A General Equilibrium Analysis for Thailand
Creators: name: Wattanakuljarus, Anan
name: Coxhead, Ian A.
name: Wattanakuljarus, Anan
name: Coxhead, Ian A.
Publisher: name: Unknown
Year: 2006
Subjects: International Development

description: The popularity of tourism as a component of development strategy in low-income countries is founded in part upon the belief that expansion of this industry will improve income distribution by greatly expanding demand for relatively low-skilled labor. We examine this belief for the case of Thailand, a highly tourism-intensive economy, using a new and specifically-designed applied general equilibrium model. A boom in inbound tourism demand generates foreign exchange and raises household incomes across the board, but worsens their distribution. Tourism sectors are not especially labor-intensive, and the expansion of foreign tourism demand brings about a real appreciation that undermines profitability and reduces employment in tradable sectors, notably agriculture, from which the poor derive a substantial fraction of their income. We examine the robustness of these results with respect to alternative factor market assumptions relevant to the Thai economy.
title: О вычислительном тесте для модели адиабатического сжатия идеального бесстолкновительного газа
title: On Computing Test for Adiabatic Compression Model of Ideal Collisionless Gas
Creators: name: Быковских, Дмитрий Александрович
name: Галкин, Валерий Алексеевич
Publisher: name: Издательский центр СурГУ
Year: 2019

description: Работа посвящена исследованию тестовой задачи об адиабатическом сжатии идеального бесстолкновительного газа в одномерном пространстве. Аналитическое решение включает описание изменения во времени плотности распределения частиц, сгруппированных по скоростям. Представлено описание разработанного комплекса программ, позволяющих моделировать динамику идеального бесстолкновительного газа с подвижными границами в трехмерном пространстве методом прямого моделирования Монте-Карло. Проведены серии вычислительных экспериментов с различным числом частиц и скоростями движения границ, включая сравнение численных результатов с аналитическими решениями и оценку производительности разработанного комплекса программ.
description: The article is devoted to computing test for adiabatic compression of an ideal collisionless gas in one-dimensional space. There is a description of particle density changes grouped by particle velocity over time for analytical solutions. The created software description is presented. The software allows simulating ideal collisionless gas dynamics with moving boundaries in the threedimensional space by Monte Carlo method. Computing test series with different particle numbers and boundary velocities are run. The comparison between numerical results and analytical solutions is also made. The article contains software performance testing.
Determinants of exposure to metalworking fluid in small machine shops
Creators: name: Ross, Andrew Spilsbury
Publisher: name: University of British Columbia
Year: 2009

description: The objectives of this study were to measure personal airborne concentrations of metalworking fluids (MWF) in small machine shops by three different methods and to conduct a determinants of exposure analysis to evaluate factors that contribute to or minimize exposure to MWF. The three aerosol exposure measures were "total" aerosol, PM10 aerosol and extractable mass concentration. Eighty-eight machinists, employed at fifteen different machine shops, participated in the study. Side by side full shift "total" and thoracic aerosol samples were obtained from all participants and seventy-three machinists were sampled on two occasions with a minimum of eight days between measurements. There was total of 161 person-days of participation. Machinists were observed for their entire shift and information was collected at 15-minute intervals on different tasks they performed. Shop, machine tool and MWF management characteristics were also collected. Statistical modeling of the collected information was used to identify significant predictors of exposure. Extractable mass concentration was analyzed using a provisional American Society for Testing and Materials (ASTM) method for metalworking fluids. The ASTM method was performed on filters from "total" aerosol (open-faced, 37 mm cassettes). Thoracic aerosol was collected using personal PM10 samplers. The mean "total" aerosol exposure was 0.32 mg/m³ and the mean thoracic aerosol exposure was 0.27 mg/m³. The mean extractable mass exposure was 0.07 mg/m3 and the mean fraction of extractable mass to "total" aerosol was 0.31. Multiple linear regression models explained 0.65, 0.63 and 0.50 of the variance for the "total" aerosol, thoracic aerosol and extractable mass models respectively. The models all indicated shop height was associated with lower exposure. Operating an enclosed computer controlled (CNC) machine tool, operating a wet grinder, operating a wet saw and the presence of welding in the shop were variables that were associated with increased exposure in all three models. Other predictor variables of increased or reduced exposure were associated with the individual models. The extractable mass analysis was found to predict variables related to MWF than the aerosol models.
Does Small Dam Removal Affect Local Property Values? An Empirical Analysis
Creators: name: Provencher, Bill
name: Sarakinos, Helen
name: Meyer, Tanya
name: Provencher, Bill
name: Sarakinos, Helen
name: Meyer, Tanya
Publisher: name: Unknown
Year: 2006
Subjects: Land Economics/Use

description: This paper uses hedonic analysis to examine the impact of small dam removal on property values in South-central Wiscosin. Data on residential property sales were obtained for three categories of sites: those where a dam is intact, those where a dam was recently removed, and those where the stream has been free-flowing for at least 20 years. The primary conclusions that emerge from the data are that residential property located in the vicinity of a free-flowing stream is more valuable than identical property in the vicinity of a small impoundment, and that shoreline frontage along small impoundments confers no increase in residential property value compared to frontage along free-flowing streams.
Cl electrosorption on Ag(100): Lateral interactions and electrosorption valency from comparison of Monte Carlo simulations with chronocoulometry experiments
Creators: name: Hamad, I. Abou
name: Mitchell, S. J.
name: Wandlowski, Th.
name: Rikvold, P. A.
name: Brown, G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We present Monte Carlo Simulations using an equilibrium lattice-gas model for the electrosorption of Cl on Ag(100) single-crystal surfaces. Fitting the simulated isotherms to chronocoulometry experiments, we extract parameters such as the electrosorption valency gamma and the next-nearest-neighbor lateral interaction energy phi_nnn. Both coverage-dependent and coverage independent gamma were previously studied assuming a constant phi_nnn [I. Abou Hamad, Th. Wandlowski, G. Brown, P.A. Rikvold, J. Electroanal. Chem. 554-555 (2003) 211]. Here, a self-consistent, entirely electrostatic picture of the lateral interactions with a coverage-dependent phi_nnn is developed, and a relationship between phi_nnn and gamma is investigated for Cl on Ag(100).
description: Accepted for publication in Electrochimica Acta, 10 pages, 7 figures, 2 tables and an appendix
Cryptographic approach to Quantum Metrology
Creators: name: Shettell, Nathan
name: Kashefi, Elham
name: Markham, Damian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider a cryptographically motivated framework for quantum metrology in the presence of a malicious adversary. We begin by devising an estimation strategy for a (potentially) altered resource (due to a malicious adversary) and quantify the amount of bias and the loss in precision as a function of the introduced uncertainty in the resource. By incorporating an appropriate cryptographic protocol, the uncertainty in the resource can be bounded with respect to the soundness of the cryptographic protocol. Thus the effectiveness of the quantum metrology problem can be directly related to the effectiveness of the cryptography protocol. As an example, we consider a quantum metrology problem in which resources are exchanged through an unsecured quantum channel. We then construct two protocols for this task which offer a trade-off between difficulty of implementation and efficiency.
description: 3 figures, appendix
High rate CO2 photoreduction using flame annealed TiO2 nanotubes
Creators: name: Kumar, Pawan
Publisher: name: figshare
Year: 2021
Subjects: subject: 30201 Bioinorganic Chemistry
subject: FOS: Chemical sciences
subject: Biochemistry
subject: 30401 Biologically Active Molecules
subject: 39999 Chemical Sciences not elsewhere classified
subject: 30301 Chemical Characterisation of Materials
subject: 30404 Cheminformatics and Quantitative Structure-Activity Relationships
subject: Cheminformatics
subject: 30603 Colloid and Surface Chemistry

description: The photocatalytic reduction of CO2 into light hydrocarbons using sunlight and water is a challenging reaction involving eight electron transfer steps; nevertheless, it has great potential to address the problem of rising anthropogenic carbon emissions and enable the use of fossil fuels in a sustainable way. Several decades after its first use, TiO2 remains one of the best performing and most durable photocatalysts for CO2 reduction albeit with a poor visible light absorption capacity. We have used flame annealing to improve the response of TiO2 to visible photons and engineered a nanotubular morphology with square-shaped cross-sections in flame-annealed nanotubes. An enhanced CH4 yield was achieved in the photoreduction of CO2 using flame annealed TiO2 nanotubes, and isotope labeled experiments confirmed the reaction products to originate from the CO2 reactant.
Media Analysis on Volatile Markets' Dynamics and Adaptive Behavior for the Agri-Food System
Creators: name: Davier, Von
name: Heyder, Matthias
name: Theuvsen, Ludwig
Publisher: name: CentMA
Year: 2010
Subjects: agriculture; media analysis; public discourse; shared assumptions; volatility

description: The volatility of agricultural markets has increased remarkably in recent years. In spite of this, the way in which supply chain actors perceive market volatility has only rarely been analyzed. This paper seeks to close this research gap by presenting empirical findings about how the volatility of agricultural markets is perceived, how increasing market volatilities are being explained, and what adaptations to the volatile external environments are being suggested. Based on a large-scale media analysis, we have identified perceptions, which vary greatly over time, especially with regard to the perception of the threats and opportunities volatility creates for farms and firms and the most frequently identified reasons for volatile prices.
description: International Journal on Food System Dynamics, Vol 1, No 3 (2010)
An Updated Trade Area Analysis of Wisconsin Counties for 2005
Creators: name: Deller, Steven C.
name: Deller, Steven C.
Publisher: name: Unknown
Year: 2006
Subjects: Community/Rural/Urban Development

description: The intent of this functional research project is to apply the tools of Trade Area Analysis (TAA) to retail and service sales data for Wisconsin Counties. For this analysis we use the sales tax data as reported by the Wisconsin Department of Revenue for 2005, the most current year the data are available. Only those counties that have elected to collect the optional county sales tax are included in the analysis. Through Pull Factors and measures of Surplus and Leakage the relative strengths, and weaknesses, of local retail and service markets are identified.
Dehn twists on nonorientable surfaces
Creators: name: Stukow, Michal
Publisher: name: arXiv
Year: 2006
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57N05

description: Let t_a be the Dehn twist about a circle a on an orientable surface. It is well known that for each circle b and an integer n, I(t_a^n(b),b)=|n|I(a,b)^2, where I(,) is the geometric intersection number. We prove a similar formula for circles on nonorientable surfaces. As a corollary we prove some algebraic properties of twists on nonorientable surfaces. We also prove that if M(N) is the mapping class group of a nonorientable surface N, then up to a finite number of exceptions, the centraliser of the subgroup of M(N) generated by the twists is equal to the centre of M(N) and is generated by twists about circles isotopic to boundary components of N.
description: 33 pages, 28 figures, to appear in Fundamenta Mathematicae
The Economic Impact of Milk Production on the Wisconsin Economy
Creators: name: Deller, Steven C.
name: Deller, Steven C.
Publisher: name: Unknown
Year: 2007
Subjects: Livestock Production/Industries

description: The intent of this study is to introduce and report a new method for assessing the economic impact of milk production on the Wisconsin economy. Previous agricultural impact studies have used methods with inherent lags in the timing of the relevant data. In addition, previous studies treated dairy farms as a single entity and did not separate out milk production. Dairy farms are multi-product firms producing milk, cull cows for meat as well as crops. This study focuses on just milk production. By using current annual data from the Wisconsin Agricultural Statistics a more timely analysis is provided. In addition an annual moving average of production levels is used to minimize the role of yearly fluctuate.