cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Shallow geothermal energy potential for heating and cooling of buildings with regeneration under climate change scenarios
Creators: name: Walch, Alina
name: Li, Xiang
name: Chambers, Jonathan
name: Mohajeri, Nahid
name: Yilmaz, Selin
name: Patel, Martin
name: Scartezzini, Jean-Louis
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Shallow ground-source heat pumps (GSHPs) are a promising technology for contributing to the decarbonisation of the energy sector. In heating-dominated climates, the combined use of GSHPs for both heating and cooling increases their technical potential, defined as the maximum energy that can be exchanged with the ground, as the re-injection of excess heat from space cooling leads to a seasonal regeneration of the ground. This paper proposes a new approach to quantify the technical potential of GSHPs, accounting for effects of seasonal regeneration, and to estimate the useful energy to supply building energy demands at regional scale. The useful energy is obtained for direct heat exchange and for district heating and cooling (DHC) under several scenarios for climate change and market penetration levels of cooling systems. The case study in western Switzerland suggests that seasonal regeneration allows for annual maximum heat extraction densities above 300 kWh/m$^2$ at heat injection densities above 330 kWh/m$^2$. Results also show that GSHPs may cover up to 55% of heating demand while covering 57% of service-sector cooling demand for individual GSHPs in 2050, which increases to around 85% with DHC. The regional-scale results may serve to inform decision making on strategic areas for installing GSHPs.
description: Walch and Li contributed equally. Revision submitted to Energy
title: Shock Transmission Through International Banks: Canada
Creators: name: Chapman, James
name: Damar, H. Evren
Publisher: name: Bank of Canada
Year: 2015

description: In this paper, we investigate how liquidity conditions in Canada may affect domestic and/or foreign lending of globally active banks and whether this transmission is influenced by individual bank characteristics. We find that Canadian banks expanded their foreign lending during the recent financial crisis, often through acquisitions of foreign banks. We also find evidence that internal capital markets play a role in the lending activities of globally active Canadian banks during times of heightened liquidity risk.
description: Dans cette étude, nous nous intéressons à la manière dont les conditions de liquidité au Canada influent sur l’activité de prêt des banques internationales dans leur pays d’attache et sur les marchés étrangers. Nous nous demandons si l’incidence des conditions de liquidité dépend des caractéristiques des établissements bancaires. Il ressort de l’étude que les banques canadiennes ont intensifié leur activité de prêt à l’étranger pendant la récente crise financière, souvent par l’acquisition de banques étrangères. Il apparaît également que les marchés de capitaux nationaux influencent l’activité de prêt des banques canadiennes présentes à l’international dans les périodes d’exacerbation du risque de liquidité.
Multiple paternity: determining the minimum number of sires of a large brood
Creators: name: Eriksson, A.
name: Mehlig, B.
name: Panova, M.
name: Andre, C.
name: Johannesson, K.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: We describe an efficient algorithm for determining exactly the minimum number of sires consistent with the multi-locus genotypes of a mother and her progeny. We consider cases where a simple exhaustive search through all possible sets of sires is impossible in practice (because it would take too long to complete). Our algorithm for solving this combinatorial optimisation problem avoids visiting large parts of search space which would not improve the solution found so far (i.e., result in a solution with fewer number of sires). This is of particular importance when the number of allelic types in the progeny array is large and when the minimum number of sires is expected to be large. Precisely in such cases it is important to know the minimum number of sires: this number gives an exact bound on the most likely number of sires estimated by a random search algorithm in a parameter region where it may be difficult to determine whether it has converged. We apply our algorithm to data from the marine snail, Littorina saxatilis.
description: 16 pages, 5 figures, 3 tables
Nachweis der thermischen Abbaubarkeit des Kalkinhibitors NC47.1B als Voraussetzung für den Einsatz im bayerischen Molassebecken
Creators: name: Trumpp, Michael
name: Heine, Florian
name: Pichlmaier, Josef
name: Eichinger, Florian
name: Drüppel, Kirsten
name: Nitschke, Fabian
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2023
Subjects: Scaling
Inhibitor
Molassebecken
Geothermie

description: In der Metropolregion München soll bis 2040 der gesamte Wärmebedarf klimaneutral gedeckt werden. Ein Großteil dieser Wärme soll aus der tiefen Geothermie kommen. Schon heute werden hier zahlreiche Geothermieanlagen erfolgreich betrieben. Bei Thermalwasserförderraten von >100 l/s und Fördertemperaturen über 100 °C kommt es im bayerischen Molassebecken allerdings vermehrt zur Bildung von mineralischen Ausfällungen, welche den Betrieb und schließlich die Wirtschaftlichkeit beeinträchtigen. Die Ausfällungen bestehen größtenteils aus Carbonaten, weswegen der umweltfreundliche Kalkinhibitor NC47.1B zur Vorbeugung eingesetzt wird. Wirksamkeit und Effizienz des Kalkinhibitors wurden im Forschungsprojekt EvA-M nachgewiesen. Als Voraussetzung für einen dauerhaften Einsatz wird im Nachfolgeprojekt EvA-M 2.0 nun die Umweltverträglichkeit nachgewiesen. Diese setzt sich aus der nicht-toxischen Inhibitorchemie sowie der biologischen und thermischen Abbaubarkeit zusammen. Die thermische Abbaubarkeit soll eine potenzielle Bioakkumulation in der Injektionsbohrung und dem Reservoir verhindern. 
Langzeitlaborversuche in hermetischen Glasampullen und Kurzzeitversuche in Headspace-Vials mit inhibitorversetztem Thermalwasser, die beide ein anaerobes geschlossenes System darstellen, wurden durchgeführt. Die Differenzierung zwischen thermischem und mikrobiellem Abbau erfolgte durch die parallele Präparation von Niedrig- (15 - 25 °C) und Hochtemperaturversuchsreihen (115 °C) sowie dem Einsatz eines Biozids und Sterilfiltration. Die Versuchszeiträume variierten von 16 h bis zu 6 Monaten. Durch die Auswertung mittels Hochleistungsflüssigkeitschromatographie konnte der thermische Abbau innerhalb von Stunden zu einem Zwischenprodukt festgestellt werden, welches nach 3 Wochen vollständig thermisch abgebaut war. Durch den nachgewiesenen thermischen Abbau kann nun eine langfristige Nutzungslizenz der Kraftwerksbetreiber beantragt werden.
title: Variance Estimation for Survey-Weighted Data Using Bootstrap Resampling Methods: 2013 Methods-of-Payment Survey Questionnaire
Creators: name: Chen, Heng
name: Shen, Rallye
Publisher: name: Bank of Canada
Year: 2015

description: Sampling units for the 2013 Methods-of-Payment Survey were selected through an approximate stratified random sampling design. To compensate for non-response and non-coverage, the observations are weighted through a raking procedure. The variance estimation of weighted estimates must take into account both the sampling design and the raking procedure. We propose using bootstrap resampling methods to estimate the variance. We find that the variance is smaller when estimated through the bootstrap resampling method than through Stata’s linearization method, where the latter does not take into account the correlation between the variables used for weighting and the outcome variable of interest.
description: Dans le cadre de l’Enquête sur les modes de paiement de 2013, les unités d’échantillonnage ont été sélectionnées à partir d’un plan d’échantillonnage stratifié aléatoire simple. Pour compenser la non-réponse et la non-couverture, les observations sont pondérées selon la procédure d’ajustement proportionnel itératif. L’évaluation de la variance des estimations pondérées doit tenir compte du plan d’échantillonnage et de la procédure d’ajustement proportionnel itératif. Les auteurs proposent d’utiliser la méthode de rééchantillonnage bootstrap pour évaluer la variance. L’étude montre que la variance estimée grâce à cette méthode est inférieure à celle obtenue avec la méthode de linéarisation propre au logiciel Stata, laquelle ne tient pas compte de la corrélation entre les variables utilisées pour la pondération et la variable de résultat étudiée.
Simultaneous Multiwavelength Observations of Markarian 421 During Outburst
Creators: name: The VERITAS Collaboration
name: Perez, I. de la Calle
name: Ibarra, A.
name: Rodriguez, P.
name: Collaboration, The MAGIC
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report on the results of two coordinated multiwavelength campaigns that focused on the blazar Markarian 421 during its 2006 and 2008 outbursts. These campaigns obtained UV and X-ray data using the XMM-Newton satellite, while the gamma-ray data were obtained utilizing three imaging atmospheric Cerenkov telescopes, the Whipple 10m telescope and VERITAS, both based in Arizona, as well as the MAGIC telescope, based on La Palma in the Canary Islands. The coordinated effort between the gamma-ray groups allowed for truly simultaneous data in UV/X-ray/gamma-ray wavelengths during a significant portion of the XMM-Newton observations. This simultaneous coverage allowed for a reliable search for correlations between UV, X-ray and gamma-ray variability over the course of the observations. Investigations of spectral hysteresis and modeling of the spectral energy distributions are also presented.
description: 27 pages, 5 figures, Accepted for publication in The Astrophysical Journal
Thermal Probing of Energy Dissipation in Current-Carrying Carbon Nanotubes
Creators: name: Shi, Li
name: Zhou, Jianhua
name: Kim, Philip
name: Bachtold, Adrian
name: Majumdar, Arun
name: McEuen, Paul L.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The temperature distributions in current-carrying carbon nanotubes have been measured with a scanning thermal microscope. The obtained temperature profiles reveal diffusive and dissipative electron transport in multi-walled nanotubes and in single-walled nanotubes when the voltage bias was higher than the 0.1-0.2 eV optical phonon energy. Over ninety percent of the Joule heat in a multi-walled nanotube was found to be conducted along the nanotube to the two metal contacts. In comparison, about eighty percent of the Joule heat was transferred directly across the nanotube-substrate interface for single-walled nanotubes. The average temperature rise in the nanotubes is determined to be in the range of 5 to 42 K per micro watt Joule heat dissipation in the nanotubes.
title: 2013 Methods-of-Payment Survey: Sample Calibration Analysis
Creators: name: Vincent, Kyle
Publisher: name: Bank of Canada
Year: 2015

description: Sample calibration is a procedure that utilizes sample and national-level demographic distribution information to weight survey participants. The objective of calibration is to weight the sample so that it is demographically representative of the target population. This technical report details our calibration analysis for the 2013 Methods-of-Payment survey questionnaire sample. The analysis makes use of a variety of variables, with corresponding distributions from the 2011 National Household Survey and 2012 Canadian Internet Use Survey. Our primary objective is to seek a sensible set of variables for calibration and to propose a set of final weights that meet a validation criterion.

A raking ratio calibration procedure is used in the analysis. We base calibration on candidate variables and nesting of pairs of variables chosen within the context of the study. An imputation strategy is implemented to account for the relatively few missing observations. Three samples are obtained for the survey and we summarize an analysis that suggests that calibration should be based on the full/collapsed data set. We describe our research on several validation criteria and, after testing the calibration procedure, report our proposed set of final weights.
description: Le calage est une méthode de redressement qui utilise de l’information sur la distribution d’un échantillon et de la population nationale pour déterminer la pondération des participants à une enquête. Le calage vise à pondérer un échantillon afin que sa composition démographique soit représentative de la population cible. Ce rapport technique expose l’analyse du calage effectué à l’égard de l’échantillon adopté pour l’enquête sur les modes de paiement de 2013. L’analyse se sert de diverses variables ainsi que des distributions correspondantes tirées de l’Enquête nationale auprès des ménages (2011) et de l’Enquête canadienne sur l’utilisation d’Internet (2012). Le principal objectif consiste à établir un ensemble pertinent de variables pour le calage et à proposer des pondérations définitives qui répondent à un critère de validation déterminé.

Aux fins de l’analyse, un calage, fondé sur les variables admissibles et sur l’imbrication de paires de variables choisies dans le contexte de l’étude, est réalisé selon la méthode itérative du quotient. Une stratégie d’imputation est appliquée pour tenir compte du nombre relativement peu élevé d’observations manquantes. Trois échantillons sont obtenus pour l’enquête; l’analyse indique que le calage devrait être basé sur l’ensemble complet de données (perçu aussi comme un ensemble de données regroupées). La recherche de plusieurs critères de validation est décrite et, après avoir testé la méthode de redressement retenue, des pondérations définitives sont proposées.
The Eastern Pacific halibut fishery 1888-1972 : an evolutionary study of the spatial structure of a resource-based complex
Creators: name: Dean, Leslie James
Publisher: name: University of British Columbia
Year: 2011

description: This study examines the spatial evolution of the Eastern Pacific halibut fishery over the period 1888-1972 in terms of resource exploitation and vessel-port interaction and attempts to delineate the factors which brought about the observed patterns. Four distinct stages of development are identified: (1) a stage of spatial confinement and resource depletion characterized by corporate involvement and restricted vessel range, (2) a stage of spatial extension, company fleet decline, and independent fleet expansion, (3) a stage of spatial adjustment, quota control, and extreme competition, (4) a stage of further spatial extension, fleet decline, and maximum sustained yields. The spatial structure of the industry at each stage of development is shown to be a function of resource availability, fishing costs, and changes in halibut fleet behavior. The time-cost-distance factor between producing grounds and the landing/processing sector of the industry proved to be a critical factor in a fishery that was characterized by increased competition for annual quotas. Conceptual models of the industry's spatial structure have been developed to portray the major changes which occurred from one stage to the next. These in turn are further developed to conceptualize the evolution of the halibut fishery over the 1888-1972 period.
VQ-NeRF: Neural Reflectance Decomposition and Editing with Vector Quantization
Creators: name: Zhong, Hongliang
name: Zhang, Jingbo
name: Liao, Jing
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Graphics (cs.GR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: We propose VQ-NeRF, a two-branch neural network model that incorporates Vector Quantization (VQ) to decompose and edit reflectance fields in 3D scenes. Conventional neural reflectance fields use only continuous representations to model 3D scenes, despite the fact that objects are typically composed of discrete materials in reality. This lack of discretization can result in noisy material decomposition and complicated material editing. To address these limitations, our model consists of a continuous branch and a discrete branch. The continuous branch follows the conventional pipeline to predict decomposed materials, while the discrete branch uses the VQ mechanism to quantize continuous materials into individual ones. By discretizing the materials, our model can reduce noise in the decomposition process and generate a segmentation map of discrete materials. Specific materials can be easily selected for further editing by clicking on the corresponding area of the segmentation outcomes. Additionally, we propose a dropout-based VQ codeword ranking strategy to predict the number of materials in a scene, which reduces redundancy in the material segmentation process. To improve usability, we also develop an interactive interface to further assist material editing. We evaluate our model on both computer-generated and real-world scenes, demonstrating its superior performance. To the best of our knowledge, our model is the first to enable discrete material editing in 3D scenes.
description: Accepted by TVCG. Project Page: https://jtbzhl.github.io/VQ-NeRF.github.io/
Best-practice aspects of quantum-computer calculations: A case study of hydrogen molecule
Creators: name: Miháliková, Ivana
name: Friák, Martin
name: Pivoluska, Matej
name: Plesch, Martin
name: Saip, Martin
name: Šob, Mojmír
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum computers are reaching one crucial milestone after another. Motivated by their progress in quantum chemistry, we have performed an extensive series of simulations of quantum-computer runs that were aimed at inspecting best-practice aspects of these calculations. In order to compare the performance of different set-ups, the ground-state energy of hydrogen molecule has been chosen as a benchmark for which the exact solution exists in literature. Applying variational quantum eigensolver (VQE) to a qubit Hamiltonian obtained by the Bravyi-Kitaev transformation we have analyzed the impact of various computational technicalities. These include (i) the choice of optimization methods, (ii) the architecture of quantum circuits, as well as (iii) different types of noise when simulating real quantum processors. On these we eventually performed a series of experimental runs as a complement to our simulations. The SPSA and COBYLA optimization methods have clearly outperformed the Nelder-Mead and Powell methods. The results obtained when using the $R_{\mathrm{y}}$ variational form were better than those obtained when the $R_{\mathrm{y}}R_{\mathrm{z}}$ form was used. The choice of an optimum {entangling layer} was sensitively interlinked with the choice of the optimization method. The circular {entangling layer} has been found to worsen the performance of the COBYLA method while the full {entangling layer} improved it. All four optimization methods sometimes lead to an energy that corresponds to an excited state rather than the ground state. We also show that a similarity analysis of measured probabilities can provide a useful insight.
description: 17 pages
Indicators for Institutions - OpenAIRE MONITOR
Creators: name: Pispiringas, Leonidas
Publisher: name: Zenodo
Year: 2023
Subjects: training
GraspOS
Indicators
Monitor
Research Assessment
Open Science

description: Slides of a GraspOS training event highlighting the importance of monitoring research outputs for institutions and showing the relevance of the OpenAIRE Monitor in this context, and how to make use of it.
Oka tubes in holomorphic line bundles
Creators: name: Forstneric, Franc
name: Kusakabe, Yuta
Publisher: name: arXiv
Year: 2023
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: Primary 32Q56. Secondary 32E10, 32L05, 32Q10

description: Let $(E,h)$ be a semipositive hermitian holomorphic line bundle on a compact complex manifold $X$ with $\dim X>1$. Assume that for each point $x\in X$ there exists a divisor $D\in |E|$ in the complete linear system determined by $E$ whose complement $X\setminus D$ is a Stein neighbourhood of $x$ with the density property. Then, the disc bundle $Δ_h(E)=\{e\in E:|e|_h<1\}$ is an Oka manifold while $D_h(E)=\{e\in E:|e|_h>1\}$ is a Kobayashi hyperbolic domain. In particular, the zero section of $E$ admits a basis of Oka neighbourhoods $\{|e|_h0$. We show that this holds if $X$ is a rational homogeneous manifold of dimension $>1$. This class of manifolds includes complex projective spaces, Grassmannians, and flag manifolds. This phenomenon contributes to the heuristic principle that Oka properties are related to metric positivity of complex manifolds.
description: This version agrees with the open access published version in Math. Ann
Keldysh Green's function approach to coherence in a non-equilibrium steady state: connecting Bose-Einstein condensation and lasing
Creators: name: Keeling, Jonathan
name: Szymanska, Marzena H.
name: Littlewood, Peter B.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Solid state quantum condensates often differ from previous examples of condensates (such as Helium, ultra-cold atomic gases, and superconductors) in that the quasiparticles condensing have relatively short lifetimes, and so as for lasers, external pumping is required to maintain a steady state. On the other hand, compared to lasers, the quasiparticles are generally more strongly interacting, and therefore better able to thermalise. This leads to questions of how to describe such non-equilibrium condensates, and their relation to equilibrium condensates and lasers. This chapter discusses in detail how the non-equilibrium Green's function approach can be applied to the description of such a non-equilibrium condensate, in particular, a system of microcavity polaritons, driven out of equilibrium by coupling to multiple baths. By considering the steady states, and fluctuations about them, it is possible to provide a description that relates both to equilibrium condensation and to lasing, while at the same time, making clear the differences from simple lasers.
Three-dimensional checkerboard spin structure on a breathing pyrochlore lattice
Creators: name: Dronova, Margarita G.
name: Petricek, Vaclav
name: Morgan, Zachary
name: Ye, Feng
name: Silevitch, Daniel M.
name: Feng, Yejun
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The standard approach to realize a spin liquid state is through magnetically frustrated states, relying on ingredients such as the lattice geometry, dimensionality, and magnetic interaction type of the spins. While Heisenberg spins on a pyrochlore lattice with only antiferromagnetic nearest neighbors interactions are theoretically proven disordered, spins in real systems generally include longer-range interactions. The spatial correlations at longer distances typically stabilize a long-range order rather than enhancing a spin liquid state. Both states can, however, be destroyed by short-range static correlations introduced by chemical disorder. Here, using disorder-free specimens with a clear long-range antiferromagnetic order, we refine the spin structure of the Heisenberg spinel ZnFe2O4 through neutron magnetic diffraction. The unique wave vector (1, 0, 1/2) leads to a spin structure that can be viewed as alternatively stacked ferromagnetic and antiferromagnetic tetrahedra in a three-dimensional checkerboard form. Stable coexistence of these opposing types of clusters is enabled by the bipartite breathing-pyrochlore crystal structure, leading to a second order phase transition at 10 K. The diffraction intensity of ZnFe2O4 is an exact complement to the inelastic scattering intensity of several chromate spinel systems which are regarded as model classical spin liquids. Our results challenge this attribution, and suggest instead of the six-spin ring-mode, spin excitations in chromate spinels are closely related to the (1, 0, 1/2) type of spin order and the four-spin ferromagnetic cluster locally at one tetrahedron.
description: Submitted to Phys. Rev. B
A simple self-organized swimmer driven by molecular motors
Creators: name: Gunther, Stefan
name: Kruse, Karsten
Publisher: name: arXiv
Year: 2009
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: We investigate a self-organized swimmer at low Reynolds numbers. The microscopic swimmer is composed of three spheres that are connected by two identical active linker arms. Each linker arm contains molecular motors and elastic elements and can oscillate spontaneously. We find that such a system immersed in a viscous fluid can self-organize into a state of directed swimming. The swimmer provides a simple system to study important aspects of the swimming of micro-organisms.
description: 6 pages, 4 figures
Timescales of spike-train correlation for neural oscillators with common drive
Creators: name: Barreiro, Andrea K.
name: Shea-Brown, Eric
name: Thilo, Evan L.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: We examine the effect of the phase-resetting curve (PRC) on the transfer of correlated input signals into correlated output spikes in a class of neural models receiving noisy, super-threshold stimulation. We use linear response theory to approximate the spike correlation coefficient in terms of moments of the associated exit time problem, and contrast the results for Type I vs. Type II models and across the different timescales over which spike correlations can be assessed. We find that, on long timescales, Type I oscillators transfer correlations much more efficiently than Type II oscillators. On short timescales this trend reverses, with the relative efficiency switching at a timescale that depends on the mean and standard deviation of input currents. This switch occurs over timescales that could be exploited by downstream circuits.
Resonating Minds -- Emergent Collaboration Through Hierarchical Active Inference
Creators: name: Pöppel, Jan
name: Kahl, Sebastian
name: Kopp, Stefan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Multiagent Systems (cs.MA)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Working together on complex collaborative tasks requires agents to coordinate their actions. Doing this explicitly or completely prior to the actual interaction is not always possible nor sufficient. Agents also need to continuously understand the current actions of others and quickly adapt their own behavior appropriately. Here we investigate how efficient, automatic coordination processes at the level of mental states (intentions, goals), which we call belief resonance, can lead to collaborative situated problem-solving. We present a model of hierarchical active inference for collaborative agents (HAICA). It combines efficient Bayesian Theory of Mind processes with a perception-action system based on predictive processing and active inference. Belief resonance is realized by letting the inferred mental states of one agent influence another agent's predictive beliefs about its own goals and intentions. This way, the inferred mental states influence the agent's own task behavior without explicit collaborative reasoning. We implement and evaluate this model in the Overcooked domain, in which two agents with varying degrees of belief resonance team up to fulfill meal orders. Our results demonstrate that agents based on HAICA achieve a team performance comparable to recent state of the art approaches, while incurring much lower computational costs. We also show that belief resonance is especially beneficial in settings were the agents have asymmetric knowledge about the environment. The results indicate that belief resonance and active inference allow for quick and efficient agent coordination, and thus can serve as a building block for collaborative cognitive agents.
description: This version of the article has been accepted for publication, after peer review but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: http://dx.doi.org/10.1007/s12559-021-09960-4, Cogn Comput (2021)
The effective action and the triple Pomeron vertex
Creators: name: Hentschinski, M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study integrations over light-cone momenta in the gauge invariant effective action of high energy QCD. A regularization mechanism which allows for the evaluation of the longitudinal integrations is presented. After a rederivation of the reggeized gluon and the BFKL-equation from the effective action, we study the 1-3 and 2-4 reggeized gluon transition vertex of QCD Reggeon field theory and discuss their connection with the usual triple Pomeron vertex of perturbative QCD.
description: Talk given at the 3rd International Hadron Structure '09 Conference, Tatranska Strba, Slovakia, 30 Aug - 3 Sep 2009; 4 pages, 16 figures
Recent advances in optics (RAO): Contribution of D Narayana Rao in optics and photonics research in India
Creators: name: Acharyya, Jitendra Nath
name: Prakash, G Vijaya
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The fist documented speculations on light were found in oriental and Greek schools of philosophy. The investigations on the light in India were rooted way back to the ancient era. The Indian Samkhya, Nyaya, and Vaisheshika identified light or fie (Tejas) as one of the key elements among the fie elementary things of the universe. The pioneering results of optics and spectroscopy were witnessed in the era of stellar people like Sir Jagadish Chandra Bose and Sir C V Raman. The research has then taken a new directive into the development of nonlinear optics and photonics after the invention of the laser. The present article reviews the past few decades pioneering works of Prof. D Narayana Rao, an experimental physicist, in the context of optics and photonics in India. The most notable contributions of Prof Rao, introduced in India for the fist time, are white-light interferometry, degenerate four-wave mixing (DFWM), electric field induced second harmonic generation (EFISHG), incoherent laser spectroscopy (using dye laser), and femtosecond lasers for creating nano/microstructures.
description: Asian Journal of Physics, Vol. 30, No 6 (2021) 837-848
Proposals for High School Teaching of Quantum Physics
Creators: name: Bonacci, Enzo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: In the Italian education system, secondary students (ages 14-19) face the foundations of quantum physics during the final term of scientific high school (pre-university year). The Italian Ministry of Education, University and Research (MIUR) has remarked its importance in the syllabus to address the high school exit examination (30% of the 5th year physics course) but, due to limited learning time and intrinsic difficulty, this branch of physics is neither assimilated nor appreciated as it should. We wish to illustrate six didactic suggestions focused on learning motivation, emerged during a 17-year long teaching experience, which could help to tackle the main problems found. The key reference is the talk "Why nobody understands quantum mechanics?" given in 2013 at the 2nd Rome workshop "Science Perception" together with a concise and evocative poster outlining the history of quanta. Other useful resources are a 2015 conceptual diagram and four invited lectures held in the years 2010-2017.
description: 11 pages, 2 figures. In Proceedings of the ATINER's 6th Annual International Conference on Physics (VI PHY2018, Athens, Greece). arXiv admin note: substantial text overlap with arXiv:2109.00887
On ethnomethodology
Creators: name: Findlay, Barbara Jean
Publisher: name: University of British Columbia
Year: 2011

description: Ethnomethodolagy is considered in relation to conventional sociology; especially with regard to the epistemological critique of conventional sociology made by ethnomethodology. The pretheoretical assumptions of conventional sociology are analogous to the pretheoretical assumptions of natural science. Conventional sociology sees itself as identifying the causes of the social order. Its assumptions are (1) that the social world is analogous to the physical world in its givenness, its already-thereness, and (2) that the perceived orderliness of the social world is explicable by social laws analogous to physical laws of the natural world. The consequences of these assumptions are (1) a programme of investigation whose aim is a hypothetico-deductive explanation, and hence a division of the world into cause and effect, and (2) as a result, the reification and ‘scientification' of the social world. Ethnomathodologists take the social order to be an ongoing accomplishment of its members. Within the ethnomethodological framework, the documentary method, typification, and some features of members' accounting practices are considered. Brief consideration is given to the potential problems for ethnomethodological research.
Level statistics in arithmetical and pseudo-arithmetical chaos
Creators: name: Braun, Petr
name: Haake, Fritz
Publisher: name: arXiv
Year: 2010
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We resolve a long-standing riddle in quantum chaos, posed by certain fully chaotic billiards with constant negative curvature whose periodic orbits are highly degenerate in length. Depending on the boundary conditions for the quantum wave functions, the energy spectra either have uncorrelated levels usually associated with classical integrability or conform to the "universal" Wigner-Dyson type although the classical dynamics in both cases is the same. The resolution turns out surprisingly simple. The Maslov indices of orbits within multiplets of degenerate length either yield equal phases for the respective Feynman amplitudes (and thus Poissonian level statistics) or give rise to amplitudes with uncorrelated phases (leading to Wigner-Dyson level correlations). The recent semiclassical explanation of spectral universality in quantum chaos is thus extended to the latter case of "pseudo-arithmetical" chaos.
description: 5 pages, 1 figure. Content added: pp4,5
Strong-field interactions between a nanomagnet and a photonic cavity
Creators: name: Soykal, Öney O.
name: Flatté, M. E.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We analyze the interaction of a nanomagnet with a single photonic mode of a microcavity in a fully quantum-mechanical treatment and find that exceptionally large quantum-coherent magnet-photon coupling can be achieved. Coupling terms in excess of several THz are predicted to be achievable in a spherical cavity of ~1 mm radius with a nanomagnet of ~100 nm radius and ferromagnetic resonance frequency of ~200 GHz. Eigenstates of the magnet-photon system correspond to entangled states of spin orientation and photon number, in which over 10^5 values of each quantum number are represented; conversely initial (coherent) states of definite spin and photon number evolve dynamically to produce large oscillations in the microwave power (and nanomagnet spin orientation), and are characterized by exceptionally long dephasing times.
description: 5 pages, 4 figures
Role of Artificial Intelligence, Clinicians & Policymakers in Clinical Decision Making: A Systems Viewpoint
Creators: name: Choudhury, Avishek
name: Asan, Onur
name: Mansouri, Mo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: What is a system? Is one of those questions that is yet not clear to most individuals in this world. A system is an assemblage of interacting, interrelated and interdependent components forming a complex and integrated whole with an unambiguous and common goal. This paper emphasizes on the fact that all components of a complex system are inter-related and interdependent in some way and the behavior of that system depends on these independences. A health care system as portrayed in this article is widespread and complex. This encompasses not only hospitals but also governing bodies like the FDA, technologies such as AI, biomedical devices, Cloud computing and many more. The interactions between all these components govern the behavior and existence of the overall healthcare system. In this paper, we focus on the interaction of artificial intelligence, care providers and policymakers and analyze using systems thinking approach, their impact on clinical decision making
title: Dr. Larry Laughlin, MD, PhD, CAPT, MD, USN (Ret.) Oral History Interview Transcript
Creators: name: Uniformed Services University of the Health Sciences
Publisher: name: University Archives, Uniformed Services University of the Health Sciences, Bethesda, Maryland 20814
Year: 2009
Subjects: classificationCode: 3
subject: FOS: Medical and health sciences
classificationCode: 6.1
subject: FOS: History and archaeology

description: USU Oral History Interview Transcript
Dr. Larry Laughlin, MD, PhD, CAPT, MD, USN (Ret.)
Director, Division of Tropical Public Health, Department of Preventive Medicine and Biometrics
Chair, Department of Preventive Medicine and Biometrics
Sanford Chair of Tropical Medicine
Dean, F. Edward Hebert School of Medicine
05-02-2009
Interviewed by Emelie Rubin
Frictionless dynamics of Bose-Einstein condensates under fast trap variations
Creators: name: Muga, J. G.
name: Chen, Xi
name: Ruschhaupt, A.
name: Guery-Odelin, D.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: A method is proposed to design the time dependence of the trap frequency and achieve in a short time an adiabatic-like (frictionless) evolution of Bose-Einstein condensates governed by the Gross-Pitaevskii equation. Different cases depending on the effective dimension of the trap and the interaction regimes are considered. 2D traps are particularly suitable as the method can be applied without the need to impose any additional time-dependent change in the strength of the interatomic interaction or a Thomas-Fermi regime as it occurs for 1D and 3D traps.
Inclusive Mentoring: The Mindset of an Effective Mentor
Creators: name: Singh, Chandralekha
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: This article discusses the mindset of an effective mentor. Guidelines are provided for how to be a good mentor.
description: 4 pages
title: Neuronal SKN-1B Modulates Nutritional Signalling Pathways and Mitochondrial Networks to Control Satiety
Creators: name: Tataridas-Pallas, Nikolaos
Publisher: name: University of Kent
Year: 2021

description: Correct responses to nutrient type and availability are a crucial mater for all living organisms. In animals, food-related decisions require the communication of the sensory nervous system with internal body cues. Hunger and satiety play an important role here, controlling food intake and maintaining nutrient homeostasis. In C. elegans, chemosensory neurons sense food and relay information to the rest of the animal via hormones, neurotransmitters, and neuropeptides. These responses have a direct impact in worms’ behaviour and physiology. This study shows that SKN-1B, an ortholog of the mammalian NF-E2 related transcription factors (Nrfs), acts in the two hypothalamus-like ASI chemosensory neurons to sense food, communicate nutritional status to the organism, and control food-related behaviours. SKN-1B modulates IIS and TGF-β pathways to suppress satiety-induced quiescence and promote exploratory behaviour. Finally, SKN-1B influences physiology by promoting a robust mitochondrial network which is required for energy homeostasis. The work presented here, suggests an exciting role for mammalian Nrf proteins in food-sensing and satiety.
Discovering Active Subspaces for High-Dimensional Computer Models
Creators: name: Rumsey, Kellin
name: Francom, Devin
name: Vander Wiel, Scott
Publisher: name: Taylor & Francis
Year: 2023
Subjects: Molecular Biology
Neuroscience
Biotechnology
Environmental Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Information Systems not elsewhere classified
Mathematical Sciences not elsewhere classified

description: Dimension reduction techniques have long been an important topic in statistics, and active subspaces (AS) have received much attention this past decade in the computer experiments literature. The most common approach toward estimating the AS is to use Monte Carlo with numerical gradient evaluation. While sensible in some settings, this approach has obvious drawbacks. Recent research has demonstrated that active subspace calculations can be obtained in closed form, conditional on a Gaussian process (GP) surrogate, which can be limiting in high-dimensional settings for computational reasons. In this article, we produce the relevant calculations for a more general case when the model of interest is a linear combination of tensor products. These general equations can be applied to the GP, recovering previous results as a special case, or applied to the models constructed by other regression techniques including multivariate adaptive regression splines (MARS). Using a MARS surrogate has many advantages including improved scaling, better estimation of active subspaces in high dimensions and the ability to handle a large number of prior distributions in closed form. In one real-world example, we obtain the active subspace of a radiation-transport code with 240 inputs and 9372 model runs in under half an hour. Supplementary materials for this article are available online.
Precision Measurements of the Proton Elastic Form Factor Ratio
Creators: name: Higinbotham, D. W.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: New high precision polarization measurements of the proton elastic form factor ratio in the Q^2 range from 0.3 to 0.7 [GeV/c]^2 have been made. These elastic H(e,e'p) measurements were done in Jefferson Lab's Hall A using 80% longitudinally polarized electrons and recoil polarimetry. For Q^2 greater than 1 [GeV/c]^2, previous polarization data indicated a strong deviation of the form factor ratio from unity which sparked renewed theoretical and experimental interest in how two-photon diagrams have been taken into account. The new high precision data indicate that the deviation from unity, while small, persists even at Q^2 less than 1 [GeV/c]^2.
description: 5 pages, 2 figures, to appear in Proceedings of XIII International Conference on Hadron Spectroscopy (Hadron2009)
Internationalizing AI: Evolution and Impact of Distance Factors
Creators: name: Tang, Xuli
name: Li, Xin
name: Ma, Feicheng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computers and Society (cs.CY)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: International collaboration has become imperative in the field of AI. However, few studies exist concerning how distance factors have affected the international collaboration in AI research. In this study, we investigate this problem by using 1,294,644 AI related collaborative papers harvested from the Microsoft Academic Graph (MAG) dataset. A framework including 13 indicators to quantify the distance factors between countries from 5 perspectives (i.e., geographic distance, economic distance, cultural distance, academic distance, and industrial distance) is proposed. The relationships were conducted by the methods of descriptive analysis and regression analysis. The results show that international collaboration in the field of AI today is not prevalent (only 15.7%). All the separations in international collaborations have increased over years, except for the cultural distance in masculinity/felinity dimension and the industrial distance. The geographic distance, economic distance and academic distances have shown significantly negative relationships with the degree of international collaborations in the field of AI. The industrial distance has a significant positive relationship with the degree of international collaboration in the field of AI. Also, the results demonstrate that the participation of the United States and China have promoted the international collaboration in the field of AI. This study provides a comprehensive understanding of internationalizing AI research in geographic, economic, cultural, academic, and industrial aspects.
Bubbling solutions, entropy enhancement and the fuzzball proposal
Creators: name: Ruef, Clement
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this short note we explain the main idea of the work done in arXiv:0804.4487[hep-th] and arXiv:0812.2942[hep-th]. We present a family of black hole microstates, the bubbling solutions. We then explain how supertubes placed in such backgrounds have their entropy enhanced by the presence of the background dipole charges. This indicates this could account for a large amount in the entropy of the three charge black hole.
description: 2 pages, contribution to the Cargese 2008 proceedings: Theory and Particle Physics: the LHC perspective and beyond
A Donut shaped Toroidal Universe Model as a Potential Solution to the Missing Matter Problem
Creators: name: Neupane, Bishal
Publisher: name: Zenodo
Year: 2025

description: This paper presents a theoretical exploration of a cosmological model wherein the universe possesses a toroidal topology, investigating its potential to account for the observed discrepancies attributed to dark matter. Through a mathematical framework defining the volume and matter density within such a geometry, the analysis demonstrates that a uniformly distributed total mass within a toroidal universe of plausible dimensions could yield a baryonic matter fraction consistent with cosmological observations. It is important to note that this work is presented as a speculative exercise and should not be interpreted as a definitive or empirically validated solution to the missing matter problem.