cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
D3.3 Dynamical downscaling of climate & atmospheric impacts
Creators: name: Auvinen, Mikko
name: Hämäläinen, Ville
name: Jukka-Pekka Keskinen
name: Hellsten, Antti
Publisher: name: Zenodo
Year: 2023
Subjects: Meteorological modeling
downscaling
turbulence

description: This deliverable D3.3 “Dynamical downscaling of climate & atmospheric impacts” provides a description of high resolution modeling approach to downscale both meteorological and wind information for the four HYPERION pilot sites. The downscaled information will be utilized by analysis techniques developed in HYPERION project to assess the impact of weather on the deterioration, decay and structural stress on building materials and structures. The downscaling methodology for wind impacts is founded on high-resolution Large-eddy Simulation (LES) analyses, which provide spatially and temporally detailed information on the turbulent wind conditions within the pilot cities. This is achived by employing a nested domain approach, which enable the solution of both large scale atmospheric boundary layer turbulence and micro scale urban turbulence simultaneously. The wind information is provided in a scalable form which allows its employment in analysis covering different meteorological conditions.
Multiple return times theorems for weakly mixing systems
Creators: name: Assani, I.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2000

description: We prove the pointwise convergence of weighted averages 1/N ΣN n=1ang(Rnz) where (Z, K, v, R ) is an ergodic dynamical system. The sequence an is given by expression of the form an = an(x, y1, y2, ..., yj)=(HΠi=1fi(Tbibx)).(JΠj=1gj(Snjyj)), where (b1, b2, ..., bH)∊ZH and J is a positive integer. The functions fi and gj are bounded and the systems (X, F, μ, T) and (Yj, Gj, mj, Sj) are weakly mixing.
Fiber-based two-wavelength heterodyne laser interferometer
Creators: name: Zhang, Yanqi
name: Guzman, Felipe
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Displacement measuring interferometry is a crucial component in metrology applications. In this paper, we propose a fiber-based two-wavelength heterodyne interferometer as a compact and highly sensitive displacement sensor that can be used in inertial sensing applications. In the proposed design, two individual heterodyne interferometers are constructed using two different wavelengths, 1064 nm and 1055 nm; one of which measures the target displacement and the other monitors the common-mode noise in the fiber system. A narrow-bandwidth spectral filter separates the beam paths of the two interferometers, which are highly common and provide a high rejection ratio to the environmental noise. The preliminary test shows a sensitivity floor of 7.5pm/rtHz at 1Hz when tested in an enclosed chamber. We also investigated the effects of periodic errors due to imperfect spectral separation on the displacement measurement and propose algorithms to mitigate these effects.
Bioinformatic Analysis of Frequently Reported Somatically Mutated Genes of Triple-Negative Breast Cancer and Comparison with Top Mutated Genes from BRCA UK Project
Creators: name: Hilario, Allan L.
name: Medina, John Robert C.
name: Nevado, Jose Jr. L
name: Silao, Catherine Lynn T.
Publisher: name: Zenodo
Year: 2020
Subjects: Genetic mutations, triple-negative breast cancer, review

description: This is a review of somatically mutated genes in triple-negative breast cancer based on the frequency of citing article in the literature and bioinformatic analysis such as Gene Ontology and STRING for protein-protein interaction with comparison with the dataset from the BRCA-UK Project uploaded at the International Cancer Genome Consortium.
description: This paper is not yet published. It is in the process for submission for publication.
Variational representations for continuous time processes
Creators: name: Dupuis, Paul
name: Budhiraja, Amarjit
name: Maroulas, Vasileios
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: A variational formula for positive functionals of a Poisson random measure and Brownian motion is proved. The formula is based on the relative entropy representation for exponential integrals, and can be used to prove large deviation type estimates. A general large deviation result is proved, and illustrated with an example.
Nonparametric Change-Point Estimation
Creators: name: Carlstein, E.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1988

description: Consider a sequence of independent random variables $\{X_i: 1 \leq i \leq n\}$ having cdf $F$ for $i \leq \theta n$ and cdf $G$ otherwise. A class of strongly consistent estimators for the change-point $\theta \in (0, 1)$ is proposed. The estimators require no knowledge of the functional forms or parametric families of $F$ and $G$. Furthermore, $F$ and $G$ need not differ in their means (or other measure of location). The only requirement is that $F$ and $G$ differ on a set of positive probability. The proof of consistency provides rates of convergence and bounds on the error probability for the estimators. The estimators are applied to two well-known data sets, in both cases yielding results in close agreement with previous parametric analyses. A simulation study is conducted, showing that the estimators perform well even when $F$ and $G$ share the same mean, variance and skewness.
D3.6 Report on site-specific risk parameters and stressor indicators
Creators: name: Barmpas, Fotios
name: Tsegas, George
name: Chourdakis, Eleftherios
Publisher: name: Zenodo
Year: 2023

description: This deliverable aims to provide a detailed description of the qualitative and quantitative assessment on the relevance of primary and secondary impact indicators derived from climate calculations and RT in-situ measurements. These indicators will followingly be used in WP5-WP7 as input in the process of providing RT hazard assessments for the DSS, as well as HT and structural vulnerability assessment. The data used in the analysis described in the frame of this document originated from the EURO-CORDEX project, exploiting multiple RCM simulations performed by different GCMs to cover the period from 1971 to 2100. The variables considered in this analysis comprise ambient temperature and precipitation.
Performance of the upgraded VERITAS Stellar Intensity Interferometer (VSII)
Creators: name: Kieda, David B.
name: Collaboration, VERITAS
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The VERITAS Imaging Atmospheric Cherenkov Telescope array (IACT) was augmented in 2019 with high-speed focal plane electronics to create a new Stellar Intensity Interferometry (SII) observational capability (VERITAS-SII, or VSII). VSII operates during bright moon periods, providing high angular resolution observations ( < 1 mas) in the B photometric band using idle telescope time. VSII has already demonstrated the ability to measure the diameters of two B stars at 416 nm (Bet CMa and Eps Ori) with < 5% accuracy using relatively short (5 hours) exposures. The VSII instrumentation was recently improved to increase instrumental sensitivity and observational efficiency. This paper describes the upgraded VSII instrumentation and documents the ongoing improvements in VSII sensitivity. The report describes VSII's progress in extending SII measurements to dimmer magnitude stars and improving the VSII angular diameter measurement resolution to better than 1%.
description: SPIE Astronomical Telescopes + Instrumentation, 2022, Montr\'eal, Qu\'ebec, Canada : Optical and Infrared Interferometry and Imaging VIII, (15 pages, 10 figures)
(100047) Bertha Mary Dorothy Williams
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Dynamics of a two-state system through a real level crossing
Creators: name: Militello, Benedetto D.
name: Vitanov, Nikolay V.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The dynamics of a two-state system whose energies undergo a real crossing at some instant of time is studied. At this instant, both the coupling and the detuning vanish simultaneously, which leads to an exact degeneracy of the eigenenergies of the system. It is found that the dynamics of the system is primarily determined by the manner in which the degeneracy occurs. This interesting behavior is reminiscent of a symmetry breaking process, since the totally symmetric situation occurring at the crossing is significantly altered by infinitesimal quantities, which remove the degeneracy, with very important dynamical implications from there on. A very simple analytical formula is derived, which is found to describe the population changes very accurately.
Nonparametric Regression with Errors in Variables
Creators: name: Fan, Jianqing
name: Truong, Young
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1993

description: The effect of errors in variables in nonparametric regression estimation is examined. To account for errors in covariates, deconvolution is involved in the construction of a new class of kernel estimators. It is shown that optimal local and global rates of convergence of these kernel estimators can be characterized by the tail behavior of the characteristic function of the error distribution. In fact, there are two types of rates of convergence according to whether the error is ordinary smooth or super smooth. It is also shown that these results hold uniformly over a class of joint distributions of the response and the covariate, which is rich enough for many practical applications. Furthermore, to achieve optimality, we show that the convergence rates of all possible estimators have a lower bound possessed by the kernel estimators.
title: All-optical majority gate based on an injection-locked laser
Creators: name: Lerber, Tuomo von
name: Lassas, Matti
name: Lyubopytov, Vladimir S.
name: Ylinen, Lauri
name: Chipouline, Arkadi
name: Hofmann, Klaus
name: Küppers, Franko
Publisher: name: Springer Nature
Year: 2022

description: An all-optical computer has remained an elusive concept. To construct a practical computing primitive equivalent to an electronic Boolean logic, one should utilize nonlinearity that overcomes weaknesses that plague many optical processing schemes. An advantageous nonlinearity provides a complete set of logic operations and allows cascaded operations without changes in wavelength or in signal encoding format. Here we demonstrate an all-optical majority gate based on a vertical-cavity surface-emitting laser (VCSEL). Using emulated signal coupling, the arrangement provides Bit Error Ratio (BER) of 10⁻⁶ at the rate of 1 GHz without changes in the wavelength or in the signal encoding format. Cascaded operation of the injection-locked laser majority gate is simulated on a full adder and a 3-bit ripple-carry adder circuits. Finally, utilizing the spin-flip model semiconductor laser rate equations, we prove that injection-locked lasers may perform normalization operations in the steady-state with an arbitrary linear state of polarization.
(100048) Gladys Rosina Oliver
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Improved Variable Window Kernel Estimates of Probability Densities
Creators: name: Hall, Peter
name: Marron, J. S.
name: Hu, Tien Chung
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1995

description: Variable window width kernel density estimators, with the width varying proportionally to the square root of the density, have been thought to have superior asymptotic properties. The rate of convergence has been claimed to be as good as those typical for higher-order kernels, which makes the variable width estimators more attractive because no adjustment is needed to handle the negativity usually entailed by the latter. However, in a recent paper, Terrell and Scott show that these results can fail in important cases. In this paper, we characterize situations where the fast rate is valid, and also give rates for a variety of cases where they are slower. In addition, a modification of the usual variable window width estimator is proposed, which does have the earlier claimed rates of convergence.
Energy Transfer and Coherence in Coupled Oscillators with Delayed Coupling: A Classical Picture for Two-Level Systems
Creators: name: Alharbi, Fahhad H
name: Abdelrahman, Abdelrahman S
name: Alkathiry, Abdullah M
name: Al-Qahtan, Hussain M
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The Frimmer-Novotny model to simulate two-level systems by coupled oscillators is extended by incorporating a constant time delay in the coupling. The effects of the introduced delay on system dynamics and two-level modeling are then investigated and found substantial. Mathematically, introducing a delay converts the dynamical system from a finite one into an infinite-dimensional system. The resulted system of delay differential equations is solved using the Krylov method with Chebyshev interpolation and post-processing refinement. The calculations and analyses reveal the critical role that a delay can play. It has oscillatory effects as the main dynamical eigenmodes move around a circle with a radius proportional to the coupling strength and an angle linear with the delay. This alteration governs the energy transfer dynamics and coherence. Accordingly, both, the delay and the coupling strength dictate the stability of the system. The delay is the main related parameter as for certain intervals of it, the system remains stable regardless of the coupling. A significant effect occurs when one of the main modes crosses the imaginary axis, where it becomes pure imaginary and dampingless. Thus, the two states energies can live and be exchanged for an extremely long time. Furthermore, it is found that the delay alters both the splitting and the linewidth in a way further influencing the energy transfer and coherence. It is found also that the delay should not be large to have significant effect. For example, for an optical system with 500 nm wavelength, the critical delay can be in tens of attoseconds.
Distinguishing types of compact-object binaries using the gravitational-wave signatures of their mergers
Creators: name: Mandel, Ilya
name: Haster, Carl-Johan
name: Dominik, Michal
name: Belczynski, Krzysztof
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We analyze the distinguishability of populations of coalescing binary neutron stars, neutron-star black-hole binaries, and binary black holes, whose gravitational-wave signatures are expected to be observed by the advanced network of ground-based interferometers LIGO and Virgo. We consider population-synthesis predictions for plausible merging binary distributions in mass space, along with measurement accuracy estimates from the main gravitational-wave parameter-estimation pipeline. We find that for our model compact-object binary mass distribution, we can always distinguish binary neutron stars and black-hole--neutron-star binaries, but not necessarily black-hole--neutron-star binaries and binary black holes; however, with a few tens of detections, we can accurately identify the three subpopulations and measure their respective rates.
description: Revised unabridged version (contains material omitted from published version)
VALUTAZIONE DELLA FUNZIONE DEL VENTRICOLO DESTRO DOPO PLASTICA DELLA VALVOLA MITRALE MEDIANTE ECOGRAFIA BI- E TRIDIMENSIONALE
Creators: name: LOARDI, CLAUDIA MARIA
Publisher: name: Universit� degli Studi di Milano
Year: 2015

description: Background and aim of the study: The aim of the present study was to investigate the importance of the modality of pericardial incision (lateral versus anterior) onto postoperative right ventricular systolic function by comparing echocardiographic parameters in patients undergoing minimally invasive or traditional mitral valve repair Materials and methods: 34 patients (mean age 52�12 years; 27 males) with severe mitral regurgitation due to mitral valve prolapse were prospectively and randomly assigned to traditional (sternotomy) operation (Group A, 17 pts) or minimally invasive surgery with right antero-lateral thoracotomy (Group B, 17 pts). The pericardial approach consisted in an anterior reversed T incision for traditional surgery and in a lateral one for mini-invasive surgery. Two-dimensional transthoracic echocardiography was performed pre- and 6 months post surgery to evaluate right ventricular function by tricuspid annular plane systolic excursion (TAPSE). Three-dimensional echocardiography was used for right ventricular volumes, ejection fraction and stroke volume evaluation Results: All patients underwent successful and uncomplicated surgery. Preoperative right ventricular function was normal in all patients. Groups failed to statistically differ in basal right ventricular volumes and function and cross-clamping time. A postoperative TAPSE fall was found in both groups, but mini-invasive patients experienced a statistically significant less marked variation (22.2�4.1 post versus 23.5�3.4 pre, p=0.06) versus traditional surgery (15.2�3.1 post versus 25.8�5.2 pre, p<0.0001), p<0.0001. 3D echocardiography retrieved no significant inter-group differences in postoperative changes of end-systolic and end-diastolic right ventricular volumes. In mini-invasive patients, right ventricular stroke volume and ejection fraction slightly augmented after surgery while in Group A both values faintly decreased, but such difference was not statistically or clinically significant Conclusions: Mini-invasive mitral repair with lateral pericardial opening reduces postoperative right ventricular longitudinal function decrease but fails to have significant effect onto ejection fraction modifications evaluated at 3D echocardiography.
D4.1 - Classification of building materials, physical-mechanical characterization and determination of decay forms and products
Creators: name: Piovesan, Rebecca
Publisher: name: Zenodo
Year: 2023

description: The deliverable D4.1 entitled as “Classification of building materials, characterization of their main physical features and determination of their decay forms and products”, reports on the results obtained in task 4.1 “Identification, classification and characterization of the building materials and their d-HAM properties” during the first two years of the project. This deliverable contains information about the building materials, their deterioration pattern and the decay products. Data derive from: i) on-site investigation performed on the Tier 1 buildings in Venice, Rhodes, Granada, and Tønsberg; ii) analyses performed in laboratory on a set of samples collected directly from the Venetian Tier 1; iii) analyses performed in laboratory on 12 rock types selected as representative of the building and decorative stones historically used in Venice, Rhodes, Granada, and Tønsberg as well as on two wood types widely used in Tønsberg. Tier 1 of the various cities underwent different characterization protocols, since travel limitations due to the sanitary contingencies prevented on-site survey on those monuments composed of stone and lithoid materials by UNIPD and IUAV teams. For this reason, a complete characterization approach was performed only for Tier 1 in Venice and in Tønsberg, the latter formed mainly of wood and analyzed by OSLOMET. For Tier 1 in Granada and Rhodes, which show only one type of building stone, the decay was evaluated on some representative portions of the constructions based on photographs, photogrammetric and laser scanner survey, therefore according to a remote-based work.
Higher-order Clustering and Pooling for Graph Neural Networks
Creators: name: Duval, Alexandre
name: Malliaros, Fragkiskos
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Graph Neural Networks achieve state-of-the-art performance on a plethora of graph classification tasks, especially due to pooling operators, which aggregate learned node embeddings hierarchically into a final graph representation. However, they are not only questioned by recent work showing on par performance with random pooling, but also ignore completely higher-order connectivity patterns. To tackle this issue, we propose HoscPool, a clustering-based graph pooling operator that captures higher-order information hierarchically, leading to richer graph representations. In fact, we learn a probabilistic cluster assignment matrix end-to-end by minimising relaxed formulations of motif spectral clustering in our objective function, and we then extend it to a pooling operator. We evaluate HoscPool on graph classification tasks and its clustering component on graphs with ground-truth community structure, achieving best performance. Lastly, we provide a deep empirical analysis of pooling operators' inner functioning.
description: CIKM 2022
Thermionic emission model for the initial regime of silicon oxidation
Creators: name: Irene, E. A.
name: Lewis, E. A.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1987

description: The very early stage of the thermal oxidation of single‐crystal Si has been the subject of continual study for the last two decades. In the light of very recent experimental oxidation data on the initial regime, we report that a simple thermionic electron flux from Si into SiO2 closely agrees with the SiO2film growth rate. The importance of electrons for the oxidation kinetics has also been attested to in several recent experimental studies. Thus a consistent model is presented for the initial oxidation regime based on the electron flux as the rate limiting step.
(100042) Alexandra Octavia Jenkins
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
The Conversion of CESR to Operate as the Test Accelerator, CesrTA, Part 1: Overview
Creators: name: Billing, M. G.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Cornell's electron/positron storage ring (CESR) was modified over a series of accelerator shutdowns beginning in May 2008, which substantially improves its capability for research and development for particle accelerators. CESR's energy span from 1.8 to 5.6 GeV with both electrons and positrons makes it ideal for the study of a wide spectrum of accelerator physics issues and instrumentation related to present light sources and future lepton damping rings. Additionally a number of these are also relevant for the beam physics of proton accelerators. This paper outlines the motivation, design and conversion of CESR to a test accelerator, CesrTA, enhanced to study such subjects as low emittance tuning methods, electron cloud (EC) effects, intra-beam scattering, fast ion instabilities as well as general improvements to beam instrumentation. While the initial studies of CesrTA focussed on questions related to the International Linear Collider (ILC) damping ring design, CesrTA is a very flexible storage ring, capable of studying a wide range of accelerator physics and instrumentation questions. This paper contains the outline and the basis for a set of papers documenting the reconfiguration of the storage ring and the associated instrumentation required for the studies described above. Further details may be found in these papers.
Evolution of Galaxy Types and HI Gas in Hickson Compact Groups
Creators: name: Liu, Yao
name: Zhu, Ming
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Compact groups have high galaxy densities and low velocity dispersions, and their group members have experienced numerous and frequent interactions during their lifetimes. They provide a unique environment to study the evolution of galaxies. We examined the galaxies types and HI contents in groups to make a study on the galaxy evolution in compact groups. We used the group crossing time as an age indicator for galaxy groups. Our sample is derived from the Hickson Compact Group catalog. We obtained group morphology data from the Hyper-Leda database and the IR classification based on Wide-Field Infrared Survey Explorer (WISE) fluxes from Zucker et al. (2016). By cross-matching the latest released ALFALFA 100% HI source catalog and supplemented by data found in literature, we obtained 40 galaxy groups with HI data available. We confirmed that the weak correlation between HI mass fraction and group crossing time found by Ai & Zhu (2018) in SDSS groups also exists in compact groups. We also found that the group spiral galaxy fraction is correlated with the group crossing time, but the actively star-forming galaxy fraction is not correlated with the group crossing time. These results seem to fit with the hypothesis that the sequential acquisition of neighbors from surrounding larger-scale structures has affected the morphology transition and star formation efficiency in compact groups.
description: 20pages, 6figures. Res. Astron. Astrophys (2022)
Optical switching and optical logic in a thermally expanding Si étalon
Creators: name: Irene, E. A.
name: Feng, S. T.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1991

description: Optical switching in a thermally expanding Si étalon has been demonstrated. In this experiment a pulsed CO 2 laser beam is used to heat a Si étalon and shift the interference fringe of a 1.5 μm probe beam. It is shown that the switching time can be greatly reduced from ms to μs by choosing a probe beam of shorter wavelength in an external switching configuration. By aligning one étalon at switch‐on and another at switch‐off, we have demonstrated a write and erase logic system.
On the Near-Optimality of Local Policies in Large Cooperative Multi-Agent Reinforcement Learning
Creators: name: Mondal, Washim Uddin
name: Aggarwal, Vaneet
name: Ukkusuri, Satish V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Multiagent Systems (cs.MA)
subject: FOS: Computer and information sciences

description: We show that in a cooperative $N$-agent network, one can design locally executable policies for the agents such that the resulting discounted sum of average rewards (value) well approximates the optimal value computed over all (including non-local) policies. Specifically, we prove that, if $|\mathcal{X}|, |\mathcal{U}|$ denote the size of state, and action spaces of individual agents, then for sufficiently small discount factor, the approximation error is given by $\mathcal{O}(e)$ where $e\triangleq \frac{1}{\sqrt{N}}\left[\sqrt{|\mathcal{X}|}+\sqrt{|\mathcal{U}|}\right]$. Moreover, in a special case where the reward and state transition functions are independent of the action distribution of the population, the error improves to $\mathcal{O}(e)$ where $e\triangleq \frac{1}{\sqrt{N}}\sqrt{|\mathcal{X}|}$. Finally, we also devise an algorithm to explicitly construct a local policy. With the help of our approximation results, we further establish that the constructed local policy is within $\mathcal{O}(\max\{e,ε\})$ distance of the optimal policy, and the sample complexity to achieve such a local policy is $\mathcal{O}(ε^{-3})$, for any $ε>0$.
Taille mixte semi-fruitière du châtaigner
Creators: name: Cabanettes, Alain
name: Willm, Jérôme
name: Bunrel, Laurent
Publisher: name: Zenodo
Year: 2020
Subjects: taille, forestière, châtaignier, dispositif expérimental, forêt

description: Protocole pour la taille semi-fruitière du châtaignier dans le cadre du dispositif expérimental de Saint-Caprais
Angular momentum projected multi-cranked configuration mixing for reliable calculation of high-spin rotational bands
Creators: name: Shimada, Mitsuhiro
name: Tagami, Shingo
name: Shimizu, Yoshifumi R.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: By employing the angular momentum projection technique we propose a method to reliably calculate the quantum spectrum of nuclear collective rotation. The method utilizes several cranked mean-field states with different rotational frequencies and they are superposed in the sense of the configuration mixing or the generator coordinate method, after performing the projection; the idea was originally suggested by Peierls-Thouless in 1962. It is found that the spectrum as a result of the configuration mixing does not essentially depend on chosen sets of cranking frequencies if the number of mean-field states utilized in the mixing is larger than a certain small value. We apply this method to three examples employing the Gogny D1S effective interaction and show that it is useful to study high-spin rotational bands by means of the angular momentum projection method.
description: 32 pages, 25 figures. Revised; mistake was found and corrected in calculation of 164Er; new figures and sentences are added by a request of journal (B(E2), mixing probability)
D4.2 - Assessment of hygrothermal and textural features controlling building materials decay, and required as input in the hydrothermal simulations"
Creators: name: Coletti, Chiara
name: Germinario, Luigi
Publisher: name: Zenodo
Year: 2023

description: The knowledge of the decay of cultural heritage and prediction of the future risk to its survival are bound to the constituent materials, their properties, and the way they interact with the environment and respond to environmental stresses. From this perspective, Deliverable 4.2 collects and presents information on a series of building materials used in Europe, intended to feed decay and vulnerability models related to the conservation of cultural heritage. The selected building materials include stones, bricks, and rammed heart from Italy, Greece, Spain, Norway, and Croatia, known for their historical usage or commercial value. These materials were investigated in the laboratory with a petrographic and physical-mechanical approach, encompassing a series of properties and characteristics involving material texture, colour, density, porosity, hydric and thermal behaviour, strength, deformability, and resistance to artificial accelerated weathering by salt crystallization and freezing-thawing. These represent some of the most significant parameters affecting material deterioration. The properties of the different building materials are here presented in datasets and representative plots, often stressing the differences in performance connected with diverse compositions, or lithogenesis, or manufacturing processes. In this way, valuable indications about the quality, durability and suitability of application of each material are provided.
Keeping fit & staying safe: A systematic review of women’s use of social media for fitness
Creators: name: Peelo Dennehy, Doireann
name: Murphy, Stephanie
name: Foley, Sarah
name: Mccarthy, John
name: MORRISSEY, KELLIE
Publisher: name: University of Limerick
Year: 2024
Subjects: classificationCode: 40
subject: Engineering

description: Social media has transformed how users create, share, and consume health and fitness content. Research to date demonstrates that despite positive sharing opportunities, women are subject to misinformation, gendered harassment, and economic surveillance. To clarify the benefits and challenges facing women who interact with fitness content on social media, we conducted a qualitative systematic synthesis of 21 research papers. Thematic synthesis of the included papers describes how social media is used as a site to share information and experiences, how women engage with fitness content and how platforms are used in this engagement. We constructed four themes describing women’s actions in engaging with fitness content online: producing, observing, interacting, and managing. In one of the main contributions of this paper, these themes are worked into a modes of engagement framework, for categorising and understanding the ways women use social media for fitness. This framework may be useful in further analysis of women’s use of social media.
Two-loop electroweak threshold corrections in the Standard Model
Creators: name: Kniehl, Bernd A.
name: Pikelner, Andrey F.
name: Veretin, Oleg L.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the relationships between the basic parameters of the on-shell renormalization scheme and their counterparts in the $\overline{\mathrm{MS}}$ scheme at full order ${\cal O}(α^2)$ in the Standard Model. These enter as threshold corrections the renormalization group analyses underlying, e.g., the investigation of the vacuum stability. To ensure the gauge invariance of the parameters, in particular of the $\overline{\mathrm{MS}}$ masses, we work in $R_ξ$ gauge and systematically include tadpole contributions. We also consider the gaugeless-limit approximation and compare it with the full two-loop electroweak calculation.
description: 33 pages, 1 figure, matches journal publication
Effectiveness of a community-directed ‘healthy lifestyle’ program in a remote Australian Aboriginal community
Creators: name: Skinner, Karen
name: Skinner, Michelle
name: White, Gwyneth
name: Daniel, Mark
name: O'Dea, Kerin
name: Rowley, Kevin
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2000

description: Objective: To assess the sustainability and effectiveness of a community-directed program for primary and secondary prevention of obesity, diabetes and cardiovascular disease in an Aboriginal community in north-west Western Australia. Method: Evaluation of health outcomes (body mass index, glucose tolerance, and plasma insulin and triglyceride concentrations) in a cohort of high-risk individuals (n=49, followed over two years) and cross-sectional community samples (n=200 at baseline, 185 at two-year and 132 at four-year follow-ups), process (interventions and their implementation) and impact (diet and exercise behaviour). Results: For the high-risk cohort, involvement in diet and/or exercise strategies was associated with protection from increases in plasma glucose and triglycerides seen in a comparison group; however, sustained weight loss was not achieved. At the community level, significant reductions were observed in fasting insulin concentration but no change in prevalence of diabetes, overweight or obesity. Weight gain remained a problem among younger people. Sustainable improvements were observed for dietary intake and level of physical activity. These changes were related to supportive policies implemented by the community council and store management. Conclusions: Community control and ownership enabled embedding and sustainability of program, in association with social environmental policy changes and long-term improvements in important risk factors for chronic disease. Implications: Developmental initiatives facilitating planning, implementation and ownership of interventions by community members and organisations can be a feasible and effective way to achieve sustainable improvements in health behaviours and selected health outcomes among Aboriginal people.
D 5.4: YUFE Open Science calendar 2022
Creators: name: Méndez, Eva
name: Puig, Núria Bautista
Publisher: name: Zenodo
Year: 2022
Subjects: YUFERING
Open Science
YUFE
University Alliances
Open Research
Scholarly communication
Open Access
OA community

description: Background of the project As part of the European Research Area vision, the European Commission is aiming to see the necessary transformations in R&I that will include the promotion of citizen science and societal engagement, the mainstreaming of Open Science practices, the fostering of brain and knowledge circulation, strengthening of academia-business collaboration and embodiment in a global Research and Innovation (R&I) ecosystem. The YUFE (Young Universities for the Future of Europe) alliance embraces “YUFE Transforming Research and Innovation through Europe-wide Knowledge Transfer” (YUFERING) this challenge by effectively contributing to pilot these needed transformations to improve and harmonise the conditions for R&I in Europe. Focusing on key elements of the ERA and in full alignment with the relevant SwafS call for proposals, YUFERING proposes ground-breaking transformation actions that will bring the partners one step closer to creating and realising a shared robust R&I vision. Deliverable content More specifically, WP5 aims to create a YUFE Open Science Strategy and look for a post-COVID-19 approach that states Open Science as “the new normal” in YUFE Universities. In this regard, one of the main objectives is the ‘Engagement/Education/Training: Co-creation of a YUFE Open Education Training Suite on Open Science’. In this scheme, Task 5.4. aims to co-create a training and training and engaging scheme for YUFE researchers about Open Science and, one of the subtasks, is the elaboration of an Open Science Calendar that aims to increase awareness on the open science practices among the researchers (and some intended staff --OS Units, Libraries, Research Support--) from the YUFERING Universities. This deliverable presents this output, from its conceptualization until launch by each one of the partners. The calendar created was a co-joint effort with all the partners and was further customized by each institution, having adopted different dissemination strategies that are detailed in this report.
Wind dispersal of natural and biomimetic maple samaras - supplemental design files
Creators: name: Nave, Gary
name: Hall, Nathaniel
name: Somers, Katrina
name: Davis, Brock
name: Collver, Michael
name: Gruszewski, Hope A.
name: Schmale, David G.
name: Ross, Shane
Publisher: name: figshare
Year: 2020
Subjects: subject: Additive Manufacturing
subject: Plant Biology
subject: FOS: Biological sciences
subject: 90101 Aerodynamics (excl. Hypersonic Aerodynamics)
subject: FOS: Mechanical engineering

description: These are the design files for the biomimetic maple samaras introduced in "Wind dispersal of natural and biomimetic maple samaras" by Gary K. Nave, Jr., Nathaniel Hall, Katrina Somers, Brock Davis, Hope Gruszewski, Craig Powers, Michael Collver, David G. Schmale III, and Shane D. Ross [under review]. In the study, 3D-printed artificial samaras were introduced, which mimic both Norway maple and silver maple samaras. Here, we provide the 3D models for these artificial samaras, as AutoDesk Inventor files (.ipt), as standard 3D files (.stl), and as 3D-printer instructions (.gcode).
NOTE: The .gcode was developed using Cura for an Ultimaker 3D printer with PLA as Material 1 and PVA as Material 2.
D4.3 Analysis of microclimatic time series and assessment of systematic deviation from local time series required as input in the hygrothermal simulations
Creators: name: Germinario, Luigi
Publisher: name: Zenodo
Year: 2023

description: Deliverable D4.3 presents the work of research and technical development for designing a novel method for monitoring and predicting material decay in cultural heritage. It focuses on the microclimate and climate factors affecting the weathering of stone and timber used as building materials in diverse environmental settings. An apparatus for long-term field exposure tests was expressly designed in its hardware and software components. That supports the monitoring of the microclimate characteristics of selected stone and wood samples, installed in Italy and Norway at different orientations. The data series of surface temperature and humidity measured on the sample surfaces are to be compared with other microclimate and climate datasets recorded at different scales and from different sources and equipment (“smart tags”, weather stations, and regional stations of environmental monitoring). In such a way, the differences between standard climate time series and microclimate series at the scale of both the whole buildings and their discrete component materials can be determined. A correlation is also established between the environmental settings and the material properties and durability. In fact, the apparatus is also designed for the quantification of natural ageing. A series of preliminary laboratory analyses (colorimetry, profilometry, and μ-XRF) were conducted for measuring sample color, surface topography, and chemical composition. The relevant datasets are to be compared with the results of the same analyses repeated in the next years, so to verify changes in material properties and reconstruct the relevant deterioration trends. The results will feed the HT Simulator Tool and will constantly update the HRAP platform, supporting the modelling of the decay and assessment of the vulnerability of historical building materials, to the benefit of the scholars and stakeholders involved in the protection of cultural heritage from environmental stresses and climate change.
(100045) Penry Williams
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
A note on circular geodesics in the equatorial plane of an extreme Kerr-Newman black hole
Creators: name: Ulbricht, Sebastian
name: Meinel, Reinhard
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We examine the behaviour of circular geodesics describing orbits of neutral test particles around an extreme Kerr-Newman black hole. It is well known that the radial Boyer-Lindquist coordinates of the prograde photon orbit $r=r_{\rm ph}$, marginally bound orbit $r=r_{\rm mb}$ and innermost stable orbit $r=r_{\rm ms}$ of the extreme Kerr black hole all coincide with the event horizon's value $r=r_+$. We find that for the extreme Kerr-Newman black hole with mass $M$, angular momentum $J$ and electric charge $Q=\pm\sqrt{M^2-J^2/M^2}$ ($|J|\le M^2$) the coordinate equalities $r_{\rm ph}=r_+$, $r_{\rm mb}=r_+$ and $r_{\rm ms}=r_+$ hold if and only if $|J|$ is greater than or equal to $M^2/2$, $M^2/\sqrt{3}$ and $M^2/\sqrt{2}$, respectively.
description: 5 pages, 2 figures, v2: reference added
IL BENDAGGIO GASTRICO E IL BYPASS GASTRICO: STUDIO DI COORTE PRE-POST SULLA QUALIT� DI VITA E L�ANDAMENTO DELLE COMORBILIT�
Creators: name: ACCARDI, ROBERTO
Publisher: name: Universit� degli Studi di Milano
Year: 2015

description: Introduction: Morbid obesity is often complicated by the presence of depression and poor quality of life. Bariatric surgery aims at improving quality of life of persons with obesity, as well as reducing mortality and medical risk factors. Quality of life assessment is important in clinical care planning, as well as in the evaluation of surgical outcomes. Goals: To assess the quality of life of patient with morbid obesity (BMI?35 kg/m2) before and after bariatric surgery procedure by using a specific tool that will be validated in Italian, to monitor the progres of prevalent comorbidities and its impact on quality of life. Methods: A multicentric pre post study on a non-randomized sample of patients aged between 19 and 65 years, with morbid obesity and BMI?35 kg/m2, candidates for bariatric surgery (gastric banding or gastric bypass) was conducted in 2013-2014. A validation study for the Italian version of Laval questionnaire was performed. Quality of life assessment and the evaluation of the trend of comorbidities were carried out in different times of observation. Results: 166 patients were enrolled, mean BMI of 42.8�7.5 kg/m2 (range 31-70). Excellent consistency (alpha>.90) and concurrent validity with the Orwell?s questionnaire (rho=-.78, p<.001). Comorbidities decrease significantly postoperatively. Self-esteem and quality of life improve as the depressive symptoms tend to regress, especially between 3 and 12 months after surgery. Conclusion: Bariatric surgery procedures are proved to be very effective in reducing obesity-related comorbidities and represent a good way to improve quality of life of obese patients.
(100041) Bertha Mary Jenkins
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.