cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Fair Division meets Vehicle Routing: Fairness for Drivers with Monotone Profits
Creators: name: Aleksandrov, Martin Damyanov
Publisher: name: arXiv
Year: 2022
Subjects: subject: Multiagent Systems (cs.MA)
subject: FOS: Computer and information sciences

description: We propose a new model for fair division and vehicle routing, where drivers have monotone profit preferences, and their vehicles have feasibility constraints, for customer requests. For this model, we design two new axiomatic notions for fairness for drivers: FEQ1 and FEF1. FEQ1 encodes driver pairwise bounded equitability. FEF1 encodes driver pairwise bounded envy freeness. We compare FEQ1 and FEF1 with popular fair division notions such as EQ1 and EF1. We also give algorithms for guaranteeing FEQ1 and FEF1, respectively.
description: 13 pages, 3 figures, IV 2022
Identification of Successive "Unobservable" Cyber Data Attacks in Power Systems Through Matrix Decomposition
Creators: name: Gao, Pengzhi
name: Wang, Meng
name: Chow, Joe H.
name: Ghiocel, Scott G.
name: Fardanesh, Bruce
name: Stefopoulos, George
name: Razanousky, Michael P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper presents a new framework of identifying a series of cyber data attacks on power system synchrophasor measurements. We focus on detecting "unobservable" cyber data attacks that cannot be detected by any existing method that purely relies on measurements received at one time instant. Leveraging the approximate low-rank property of phasor measurement unit (PMU) data, we formulate the identification problem of successive unobservable cyber attacks as a matrix decomposition problem of a low-rank matrix plus a transformed column-sparse matrix. We propose a convex-optimization-based method and provide its theoretical guarantee in the data identification. Numerical experiments on actual PMU data from the Central New York power system and synthetic data are conducted to verify the effectiveness of the proposed method.
description: 13 pages, accepted to IEEE Trans. Signal Processing
Skyrmions and multi-sublattice helical states in a frustrated chiral magnet
Creators: name: Yuan, H. Y.
name: Gomonay, O.
name: Kläui, Mathias
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigate the existence and stability of skyrmions in a frustrated chiral ferromagnet by considering the competition between ferromagnetic (FM) nearest-neighbour (NN) interaction ($J_1$) and antiferromagnetic (AFM) next-nearest-neighbour (NNN) interaction ($J_2$). Contrary to the general wisdom that long-range ferromagnetic order is not energy preferable under frustration, the skyrmion lattice not only exists but is even stable for a large field range when $J_2 \leq J_1$ compared with frustration-free systems. We defend that the enlargement of stability window of skyrmions is a consequence of the reduced effective exchange interaction caused by the frustration. A multi-sublattice helical state is found below the skyrmion phase, which results from the competition between AFM coupling that favors a two-sublattice Néel state and the chiral interaction that prefers a helix. As a byproduct, the hysteresis loop of the frustrated chiral system shrinks as the magnetization goes to zero and then opens up again, known as wasp-waist hysteresis loop. The critical field that separates the narrow and wide part of the wasp-waist loop depends exponentially on the strength of NNN coupling. By measuring the critical field, it is possible to determine the strength of NNN coupling.
description: 7 pages, 5 figures; references added
On existence of global solutions of the one-dimensional cubic NLS for initial data in the modulation space $M_{p,q}(\mathbb R)$
Creators: name: Chaichenets, Leonid
name: Hundertmark, Dirk
name: Kunstmann, Peer
name: Pattakos, Nikolaos
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We prove global existence for the one-dimensional cubic non-linear Schrödinger equation in modulation spaces $M_{p,p'}$ for $p$ sufficiently close to $2$. In contrast to known results, our result requires no smallness condition on initial data. The proof adapts a splitting method inspired by work of Vargas-Vega and Hyakuna-Tsutsumi to the modulation space setting and exploits polynomial growth of the free Schrödinger group on modulation spaces.
description: 13 pages
Investigating Mode Coupling Effects in Composite Beams with Delamination Damage
Creators: name: Su, Jiawen
name: Liew, Chin Kian
name: Veidt, Martin
Publisher: name: Singapore Institute of Technology
Year: 2023
Subjects: Composite and hybrid materials
Mechanical engineering not elsewhere classified

description: This project investigates mode coupling effects in laminated composite beams with delamination damage. 8-ply composite beams from carbon fibre woven fabric and different configurations of artificial delamination damage are used in the study. A 3-D explicit finite element simulation modelling the woven layers as transversely isotropic materials are developed to analyse the propagation and scattering behaviour of the fundamental anti-symmetric Lamb wave mode (A0). The results from the 3-D numerical model were in good agreement with analytical solutions derived from the Timoshenko beam theory in terms of phase velocities of the A0 mode. Reflection and transmission coefficient spectrums of two delamination sizes were generated based on the 3-D numerical model. The reflection and transmission spectrums were found to be dependent on the location of measurement points being selected due to the fact that the amplitude of incident wave varies periodically along the length of the beam as well as the width. The wave amplitudes across the width of the beam should also be considered in order to obtain more stable reflection and transmission coefficient spectrums.
ACCTING Factsheet: Empowering employees to help mitigate Climate Change: A business-employees alliance promoting behavioural change towards achieving Green Deal goals
Creators: name: Zaharis, Nikos
name: Klados, Manos
name: Denis, Alain
name: Pellegrini Masini, Giuseppe
Publisher: name: Zenodo
Year: 2023
Subjects: climate change
European Green Dea
policy recommendations
behavioural change
climate adaptation
resilience
inclusivity
vulnerable groups
marginalised groups

description: Recognising the important role that companies can play towards fighting Climate Change and based on the preliminary findings of the ACCTING project, we provide a framework for companies to promote inclusiveness and Green Deal policies within their own workforce. The recommendations span aspects including knowledge creation, incentives, and encouragement of collective initiatives. They are addressed to companies of all sizes, as well as organisations that collectively represent companies at the local or sectoral level. The goal is to empower employees to become agents of change within the company and their communities, recognising and addressing issues that link Climate Change with pre-existing, amplified or newly created vulnerabilities and inequalities.
Method of computation of energies in the fractional quantum Hall effect regime
Creators: name: Ammar, M. A.
name: Bentalha, Z.
name: Bekhechi, S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In a previous work, we reported exact results of energies of the ground state in the fractional quantum Hall effect (FQHE) regime for systems with up to $N_{\text{e}} = 6$ electrons at the filling factor $ν= 1/3$ by using the method of complex polar coordinates. In this work, we display interesting computational details of the previous calculation and extend the calculation to $N_{\text{e}} = 7$ electrons at $ν= 1/3$. Moreover, similar exact results are derived at the filling $ν= 1/5$ for systems with up to $N_{\text{e}} = 6$ electrons. The results that we obtained by analytical calculation are in good agreement with their analogues ones derived by the method of Monte Carlo in a precedent work.
description: 9 pages, 1 figure
Thermal and transport properties in central heavy-ion reactions around a few hundred MeV/nucleon
Creators: name: Deng, X. G.
name: Ma, Y. G.
name: Veselsky, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Thermalization process of nuclear matter in central fireball region of heavy-ion collisions is investigated by employing an extension model of Boltzmann-Uehling-Uhlenbeck, namely the Van der Waals Boltzmann-Uehling-Uhlenbeck (VdWBUU) model. Temperature ($T$) is extracted by the quantum Fermion fluctuation approach and other thermodynamic quantities, such as density ($ρ$), entropy density ($s$), shear viscosity ($η$), isospin diffusivity ($D_{I}$) and heat conductivity ($κ$), are also deduced. The liquid-like and gas-like phase signs are discussed through the behavior of shear viscosity during heavy-ion collisions process with the VdWBUU model.
description: 9 pages, 12 figures; accepted by Phys. Rev. C
Bulk viscosity for pion and nucleon thermal fluctuation in the hadron resonance gas model
Creators: name: Ghosh, Sabyasachi
name: Chatterjee, Sandeep
name: Mohanty, Bedangdas
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We have calculated microscopically bulk viscosity of hadronic matter, where equilibrium thermodynamics for all hadrons in medium are described by Hadron Resonance Gas (HRG) model. Considering pions and nucleons as abundant medium constituents, we have calculated their thermal widths, which inversely control the strength of bulk viscosities for respective components and represent their in-medium scattering probabilities with other mesonic and baryonic resonances, present in the medium. Our calculations show that bulk viscosity increases with both temperature and baryon chemical potential, whereas viscosity to entropy density ratio decreases with temperature and with baryon chemical potential, the ratio increases first and then decreases. The decreasing nature of the ratio with temperature is observed in most of the earlier investigations with few exceptions. We find that the temperature dependence of bulk viscosity crucially depends on the structure of the relaxation time. Along the chemical freeze-out line in nucleus-nucleus collisions with increasing collision energy, bulk viscosity as well as the bulk viscosity to entropy density ratio decreases, which also agrees with earlier references. Our results indicate the picture of a strongly coupled hadronic medium.
An efficient iterative thresholding method for image segmentation
Creators: name: Wang, Dong
name: Li, Haohan
name: Wei, Xiaoyu
name: Wang, Xiaoping
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Numerical Analysis (math.NA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We proposed an efficient iterative thresholding method for multi-phase image segmentation. The algorithm is based on minimizing piecewise constant Mumford-Shah functional in which the contour length (or perimeter) is approximated by a non-local multi-phase energy. The minimization problem is solved by an iterative method. Each iteration consists of computing simple convolutions followed by a thresholding step. The algorithm is easy to implement and has the optimal complexity $O(N \log N)$ per iteration. We also show that the iterative algorithm has the total energy decaying property. We present some numerical results to show the efficiency of our method.
description: 14 pages, 21 figures
A $p$-Laplacian Neumann problem with a possibly supercritical nonlinearity
Creators: name: Colasuonno, Francesca
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35J92, 35B09, 35B40, 35B45, 35A15

description: We look for nonconstant, positive, radially nondecreasing solutions of the quasilinear equation $-Δ_p u+u^{p-1}=f(u)$ with $p>2$, in the unit ball $B$ of $\mathbb R^N$, subject to homogeneous Neumann boundary conditions. The assumptions on the nonlinearity $f$ are very mild and allow it to be possibly supercritical in the sense of Sobolev embeddings. The main tools used are the truncation method and a mountain pass-type argument. In the pure power case, i.e., $f(u)=u^{q-1}$, we detect the limit profile of the solutions of the problems as $q\to\infty$.
description: 9 pages, 2 figures, BRU-TO PDE's Conference
Deception for Cyber Defence: Challenges and Opportunities
Creators: name: Liebowitz, David
name: Nepal, Surya
name: Moore, Kristen
name: Christopher, Cody J.
name: Kanhere, Salil S.
name: Nguyen, David
name: Timmer, Roelien C.
name: Longland, Michael
name: Rathakumar, Keerth
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Deception is rapidly growing as an important tool for cyber defence, complementing existing perimeter security measures to rapidly detect breaches and data theft. One of the factors limiting the use of deception has been the cost of generating realistic artefacts by hand. Recent advances in Machine Learning have, however, created opportunities for scalable, automated generation of realistic deceptions. This vision paper describes the opportunities and challenges involved in developing models to mimic many common elements of the IT stack for deception effects.
title: Studying elites: Challenges, opportunities & progressive potential
Creators: name: Higgins, Katie
name: Kunz, Sarah
Publisher: name: National Centre for Research Methods
Year: 2023

description: In June 2022, 30 academic and civil society researchers of elites met for two days in London, UK, at an NCRM Innovation Forum titled ‘Studying elites: challenges, opportunities and progressive potential’. The Forum brought together international early career and established academic researchers from across the social sciences and civil society researchers to discuss methodological approaches to the study of elites, share knowledge and strategies, and build capacity in researching elites. The Forum drew on a broad definition of elites as ‘those with vastly disproportionate control over or access to a resource’ (Khan 2012, 362), with a particular focus on political and economic elites. The event was organised around three themes: methodological strategies in studying elites, negotiating access and encounter, and the ethics and purpose of studying elites. The present Innovation Collection shares some of interventions and discussions during the event.
Angular dependence of the facular-sunspot coverage relation as derived by MDI magnetograms
Creators: name: Criscuoli, Serena
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Previous studies have shown that the variation over the solar magnetic activity cycle of the area of facular/network features identified on broad band and narrow band imagery is positively correlated with the sunspot area and number, the relation between the area coverages being described as either linear or quadratic. On the other hand, the temporal variation of the spatial distributions of faculae, network and sunspots follows patterns that are less obviously correlated, so that we expect the relation that describes variation of the area coverage of different types of magnetic features to vary with the position over the disk. In this work we employ MDI full-disk magnetograms acquired during Cycle 23 and at the beginning of Cycle 24 to investigate the relation between the coverage of magnetic elements characterized by different amounts of magnetic flux and located at different angular distances from disk center with the sunspot number. In agreement with some previous studies we find that daily data are best described by a quadratic function while data averaged over 6-months are best described by a linear function. In both cases the coefficients of the fits show large dependence on the position over the disk and the magnetic flux. We also find that toward disk center 6-months averaged data show asymmetries between the ascending and the descending phase. Implications for solar irradiance modeling are discussed.
description: Accepted in Solar Physics
Evaluation of Laminar Defects in Beams Using Guided Waves and Pattern Recognition Techniques
Creators: name: Liew, Chin Kian
name: Veidt, M.
Publisher: name: Singapore Institute of Technology
Year: 2023
Subjects: Pattern recognition
Mechanical engineering not elsewhere classified

description: Guided wave acousto-ultrasonics has recently become an important area of quantitative non-destructive evaluation research, since it has distinct advantages compared to conventional, high frequency non-destructive testing in particular for thin structures and one-dimensional structural elements such as beams. The paper reports on the investigation of a new damage detection methodology for beam structures using single mode acousto-ultrasonic guided waves. First order longitudinal waves are excited using a high-frequency vibrating piezoceramic transducer attached to one end of the beam. The measured transient wave response for the laminar defect is compared with simulated time histories based on analytical formulations of wave propagation in beams in which the damage is introduced as an inhomogeneity region in the beam. Advanced signal processing techniques, notably wavelet transforms, are applied to decompose the wave response time histories and to identify optimised parameters as input-target pairs for the quantitative detection and classification of the damage using neural network pattern recognition techniques. The final results show accurate classification of the damage parameters and an average error of less than 6% for approximating their quantities.
Não se é povo sem memória: recordar Vasco da Gama, Camões, Alexandre Herculano e outras personalidades a propósito das suas tumulações nos Jerónimos
Creators: name: Lopes, Ana Maria Costa
Publisher: name: Povos e Culturas
Year: 2008

description: Povos e Culturas, No 12 (2008): Reflexos do maio de ‘68 na sociedade portuguesa
Approximate analytic expression for the Skyrmions crystal
Creators: name: Grandi, Nicolas
name: Sturla, Mauricio
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We find approximate solutions for the two-dimensional non-linear Σ-model with Dzyalioshinkii-Moriya term, representing magnetic Skyrmions. They are built in an analytic form, by pasting different approximate solutions found in different regions of space. We verify that our construction reproduces the phenomenology known from numerical solutions and Monte Carlo simulations, giving rise to a Skyrmion lattice at an intermediate range of magnetic field, flanked by spiral and ferromagnetic phases for low and high magnetic field respectively.
description: 11 pages, 8 figures
Thermodynamic bounds on equilibrium fluctuations of a global or local order parameter
Creators: name: Guioth, J.
name: Lacoste, D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We analyze thermodynamic bounds on equilibrium fluctuations of an order parameter, which are analogous to relations, which have been derived recently in the context of non-equilibrium fluctuations of currents. We discuss the case of {\it global} fluctuations when the order parameter is measured in the full system of interest, and {\it local} fluctuations, when the order parameter is evaluated only in a sub-part of the system. Using isometric fluctuation theorems, we derive thermodynamic bounds on the fluctuations of the order parameter in both cases. These bounds could be used to infer the value of symmetry breaking field or the relative size of the observed sub-system to the full system from {\it local} fluctuations.
description: 8 pages, 6 figures, in press for Europhys. Lett
ACCTING Factsheet: Inclusive civil society for an inclusive Green Deal
Creators: name: Strid, Sofia
name: Vivas, Ana B.
name: Cacace, Marina
name: Altinay, Ayşe Gül
name: Borhan Türeli, Burcu
Publisher: name: Zenodo
Year: 2023
Subjects: Climate change
European Green Deal
behavioral change
climate adaptation
policy recommendation
resilience
inclusivity
vulnerable groups
marginalised groups

description: Non-governmental organisations play a key role in the formation and implementation of European Green Deal polices. They hold expertise in climate change, environmental issues, social justice and sustainable development issues. They work on the ground, locally and in solidarity with local communities, with and for vulnerable groups, representing their voices and interests. In doing so, they enjoy more public trust than governments, corporations, and the media. NGOs’ participation in climate change negotiations is significant: they provide policymakers and decision-makers with expertise, and they provide legitimacy to environmental governance. However, not all NGOs have successfully embedded democratic legitimacy in their organisation and actions, diversity in their governance structures and issues, and accountability of the organisation. For the Green Deal to be just and inclusive, it is crucial for civil society organisations to be inclusive, fully reflecting the diversity of the population and stakeholders.
De reikwijdte van 'toestemming'
Creators: name: Domingus, Marlon
Publisher: name: Zenodo
Year: 2023
Subjects: Toestemming
Informed Consent

description: Korte rechtsfilosofische analyse van het begrip 'toestemming' in de context van ethiek, de AVG en de WGBO. Wat zijn gesignaleerde dilemma's en knelpunten en wat zijn relevante ontwikkelingen die deze dilemma's en knelpunten adresseren?
description: Onderdeel van de 𝗠𝗮𝘀𝘁𝗲𝗿𝗰𝗹𝗮𝘀𝘀 - 𝗣𝗿𝗶𝘃𝗮𝗰𝘆𝗴𝗲𝗴𝗲𝘃𝗲𝗻𝘀 𝗶𝗻 𝗵𝗲𝘁 𝗦𝗼𝗰𝗶𝗮𝗮𝗹 𝗗𝗼𝗺𝗲𝗶𝗻 op 5 juli 2023, georganiseerd door Privacy1.
Trajectory Tracking Control of the Bionic Joint Actuated by Pneumatic Artificial Muscle Based on Robust Modeling
Creators: name: Wang, Yang
name: Zhang, Qiang
name: Xiao, Xiao-hui
Publisher: name: arXiv
Year: 2022
Subjects: subject: Systems and Control (eess.SY)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences

description: To simply and effectively realize the trajectory tracking control of a bionic joint actuated by a single pneumatic artificial muscle (PAM), a cascaded control strategy is proposed based on the robust modeling method. Firstly, the relationship between the input voltage of the proportional directional control valve and the inner driving pressure of PAM is expressed as a nonlinear model analytically. Secondly, the nonlinear relationship between the driving pressure input of PAM and the angular position output of the bionic joint is described as a second-order linear time-invariant model (LTI) accompanied by parametric perturbations, equivalently, and then the parameters of the model are identified by the robust modeling method. Then, a hybrid model is established based on the two models (the nonlinear model and the LTI model) and corresponding to it, a cascaded controller is developed, the outer loop of which is an H-infinite controller for the angular position tracking designed by loop-shaping design procedure (LSDP) and the inner loop is a nonlinear controller based on the feedback linearization theory for the PAM driving pressure control. Finally, the experiment is accomplished within the joint rotation range of 90 degrees and with the working frequency upper bound of 1.25 rad/s. And the joint with the developed cascaded controller tracks given reference trajectories with steady-state errors smaller than 2%. Results show that the trajectory tracking control of a highly nonlinear system is highly efficient using the proposed strategy in the case of relatively low work frequency.
description: 7 pages, 16 figures, journal paper
Kichik maktab yoshidagi bolalarda Skelet tizimi rivojlanishidagi buzilishlarda tashqi omillarning ta'sir darajalari
Creators: name: G'.R.Abdullayev
name: M.Sh.Madaminova
Publisher: name: Zenodo
Year: 2025

description: Ushbu maqola kichik maktab yoshidagi bolalarda skelet tizimi rivojlanishida tashqi omillarning ta’sirini o‘rganishga bag‘ishlangan. Ayniqsa, maktabda og‘ir sumkalarni ko‘tarishning skelet tizimiga qanday ta’sir ko‘rsatishi tahlil qilinadi. Maqolada sumka vaznining ortishi bolalarning postura va muskul-skelet tizimiga qanday salbiy ta’sir qilishini ko‘rsatib o‘tish, shuningdek, to‘g‘ri yuk ko‘tarish va sumka dizayni bo‘yicha tavsiyalar beriladi. Bolalarning sog‘lom skelet rivojlanishini ta’minlash uchun og‘irlikni nazorat qilish, jismoniy faoliyat va to‘g‘ri pozitsiyani saqlash muhimligini ta’kidlanadi.
Genetic algorithms for the resource-constrained project scheduling problem in aircraft heavy maintenance
Creators: name: Pimapunsri, Kusol
name: Weeranant, Darawan
name: Riel, Andreas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: Due to complex sets of interrelated activities in aircraft heavy maintenance (AHM), many airlines have to deal with substantial aircraft maintenance downtime. The scheduling problem in AHM is regarded as an NP-hard problem. Using exact algorithms can be time-consuming or even infeasible. This article proposes genetic algorithms for solving the resource-constrained project scheduling problem (RCPSP) in AHM. The objective of the study was to minimise the makespan of the maintenance plan. The proposed algorithms applied five heuristic dispatching rules to generate an initial population based on activity list formation. Resource allocation methods for RCPSPearliest start time (EST) and workgroup and earliest start time (WEST)-were used to evaluate the fitness value. The elitist and roulette wheel methods were applied in the selection process. The sequences of the activity lists were then iteratively improved by crossover and mutation operations. The results show that the proposed algorithms perform efficiently compared to the existing solutions in terms of computational time and resource allocation.
Multicomponent Dark Matter from Gauge Symmetry
Creators: name: Arcadi, Giorgio
name: Gross, Christian
name: Lebedev, Oleg
name: Mambrini, Yann
name: Pokorski, Stefan
name: Toma, Takashi
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The composition of Dark Matter (DM) remains an important open question. The current data do not distinguish between single- and multi-component DM, while in theory constructions it is often assumed that DM is composed of a single field. In this work, we study a hidden sector which naturally entails multicomponent DM consisting of spin-1 and spin-0 states. This UV complete set-up is based on SU(3) hidden gauge symmetry with the minimal scalar field content to break it spontaneously. The presence of multiple DM components is a result of a residual Z_2 x Z'_2 symmetry which is part of an unbroken global U(1) x Z'_2 inherent in the Yang-Mills systems. We find that the model exhibits various parametric regimes with drastically different DM detection prospects. In particular, we find that the direct detection cross section is much suppressed in large regions of parameter space as long as the Standard Model Higgs mixes predominantly with a single scalar from the hidden sector. The resulting scattering rate is often beyond the level of sensitivity of XENON1T, while still being consistent with the thermal WIMP paradigm.
description: v2: 25 pages, added references, small text adjustments
Perturbative approach to Dynamical Casimir effect in an interface of dielectric mediums
Creators: name: Ameri, Vahid
name: Eghbali-Arani, Mohammad
name: Soltani, Morteza
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Electromagnetic field quantization in the presence of two semi-infinite dielectrics with moving interface is investigated in $1+1$-dimensional space-time. The moving interface is modeled for small displacements and the field equation is solved perturbatively. Input-output relations and spectral distribution of emitted photons are obtained and the effect of small transitions trough the interface discussed.
ACCTING Factsheet: Promoting access to healthy and environmentally friendly food for the marginalised and vulnerable
Creators: name: Sharma, Nikita
name: Zorell, Carolin
Publisher: name: Zenodo
Year: 2023
Subjects: climate change
European Green Deal
climate adaptation
behavioural change
policy recommendations
resilience
inclusivity
vulnerable groups
marginalised groups

description: Access to healthy and environmentally friendly food is limited, especially for those living in marginalised urban (and rural) areas. It often requires much time to find and access food that is locally produced, seasonal, and organic, and when available it tends to be expensive. The current geopolitical situation exacerbates the problem, having led to dramatic increases in food prices all over the EU. Particularly, people with low-income and/or who are marginalised in multiple ways struggle to afford food, especially food that is fresh and healthy. Therefore, it is crucial that local and regional governments adapt their policy measures and make access to locally produced, seasonal healthy food a priority, especially in marginalised neighbourhoods. In doing so, policies concerning the production and provision of local food, urban mobility and urban green spaces are of major concern.
Effective-one-body waveforms for binary neutron stars using surrogate models
Creators: name: Lackey, Benjamin D.
name: Bernuzzi, Sebastiano
name: Galley, Chad R.
name: Meidam, Jeroen
name: Broeck, Chris Van Den
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Gravitational-wave observations of binary neutron star systems can provide information about the masses, spins, and structure of neutron stars. However, this requires accurate and computationally efficient waveform models that take <1s to evaluate for use in Bayesian parameter estimation codes that perform 10^7 - 10^8 waveform evaluations. We present a surrogate model of a nonspinning effective-one-body waveform model with l = 2, 3, and 4 tidal multipole moments that reproduces waveforms of binary neutron star numerical simulations up to merger. The surrogate is built from compact sets of effective-one-body waveform amplitude and phase data that each form a reduced basis. We find that 12 amplitude and 7 phase basis elements are sufficient to reconstruct any binary neutron star waveform with a starting frequency of 10Hz. The surrogate has maximum errors of 3.8% in amplitude (0.04% excluding the last 100M before merger) and 0.043 radians in phase. The version implemented in the LIGO Algorithm Library takes ~0.07s to evaluate for a starting frequency of 30Hz and ~0.8s for a starting frequency of 10Hz, resulting in a speed-up factor of ~10^3 - 10^4 relative to the original Matlab code. This allows parameter estimation codes to run in days to weeks rather than years, and we demonstrate this with a Nested Sampling run that recovers the masses and tidal parameters of a simulated binary neutron star system.
description: 17 pages, 11 figures, submitted to PRD
Test Pattern Dependent Neural Network Systems for Guided Waves Damage Identification in Beams
Creators: name: Liew, Chin Kian
name: Veidt, Martin
Publisher: name: Singapore Institute of Technology
Year: 2023
Subjects: Pattern recognition
Neural networks
Mechanical engineering not elsewhere classified

description: In regression neural networks for pattern recognition, a trained network may often produce large errors when identifying a test pattern not found in the training set. This is especially true when test patterns and training patterns are obtained from two different sources, as in the case from measured and simulated data. Therefore, this paper investigates a new neural network procedure where progressive training is performed in a series network with the implementation of a weight-range selection (WRS) technique that depends on the test pattern. An integer states rejection (ISR) criterion is also introduced to monitor and select the final network outputs. The WRS and ISR methods are applied for a supervised multi-layer perceptron operating with one hidden layer of neurons and trained using a backpropagation algorithm. An example of this system has been esigned for damage identification in beams investigated with guided waves for structural health monitoring.
GW151226: Observation of Gravitational Waves from a 22-Solar-Mass Binary Black Hole Coalescence
Creators: name: The LIGO Scientific Collaboration
name: The Virgo Collaboration
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report the observation of a gravitational-wave signal produced by the coalescence of two stellar-mass black holes. The signal, GW151226, was observed by the twin detectors of the Laser Interferometer Gravitational-Wave Observatory (LIGO) on December 26, 2015 at 03:38:53 UTC. The signal was initially identified within 70 s by an online matched-filter search targeting binary coalescences. Subsequent off-line analyses recovered GW151226 with a network signal-to-noise ratio of 13 and a significance greater than 5 $σ$. The signal persisted in the LIGO frequency band for approximately 1 s, increasing in frequency and amplitude over about 55 cycles from 35 to 450 Hz, and reached a peak gravitational strain of $3.4_{-0.9}^{+0.7} \times 10^{-22}$. The inferred source-frame initial black hole masses are $14.2_{-3.7}^{+8.3} M_{\odot}$ and $7.5_{-2.3}^{+2.3} M_{\odot}$ and the final black hole mass is $20.8_{-1.7}^{+6.1} M_{\odot}$. We find that at least one of the component black holes has spin greater than 0.2. This source is located at a luminosity distance of $440_{-190}^{+180}$ Mpc corresponding to a redshift $0.09_{-0.04}^{+0.03}$. All uncertainties define a 90 % credible interval. This second gravitational-wave observation provides improved constraints on stellar populations and on deviations from general relativity.
description: 14 pages, 5 figures
Mário F. Lages, Vida/morte e diafania do mundo da Carochinha. Ensaio etnológico. «Coleção estudos e documentos» 13, Lisboa, Universidade Católica Portuguesa. 2006
Creators: name: Cardigos, Isabel
Publisher: name: Povos e Culturas
Year: 2007

description: Povos e Culturas, No 11 (2007): Tradições populares
Some Developments in Gribov's Approach to QCD
Creators: name: Cooper, Patrick
name: Zwanziger, Daniel
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We review several developments in the formulation of QCD provided by the GZ action. These include the GZ-action at finite temperature, the relation of the horizon condition and the Kugo-Ojima confinement criterion, the relation of the horizon condition and the dual-Meisssner effect, the alternative derivation of the GZ action provided by the Maggiore-Schaden shift, and the spontaneous breaking of BRST symmetry. We conclude with a proposal for the definition of physical states in the presence of BRST breaking.
description: 8 pages, 3 figures. talk given by Zwanziger at 5th International Conference on New Frontiers in Physics
«História da Carochinha» - revisitação e revalorização de um conto tradicional (a propósito de Mário F. Lages, Vida/morte e diafania do mundo na história da Carochinha. Ensaio etnológico, Universidade Católica Portuguesa, Lisboa, 2006)
Creators: name: Correia, João David Pinto
Publisher: name: Povos e Culturas
Year: 2007

description: Povos e Culturas, No 11 (2007): Tradições populares
Quantum simulation of disordered systems with cold atoms
Creators: name: Garreau, Jean Claude
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: This paper reviews the physics of quantum disorder in relation with a series of experiments using laser-cooled atoms exposed to "kicks" of a standing wave, realizing a paradigmatic model of quantum chaos, the kicked rotor. This dynamical system can be mapped onto a tight-binding Hamiltonian with pseudo-disorder, formally equivalent to the Anderson model of quantum disorder, with quantum chaos playing the role of disorder. This provides a very good quantum simulator for the Anderson physics.
description: Submitted to Comptes Rendus de Physique
Optical and ultraviolet spectroscopic analysis of SN 2011fe at late times
Creators: name: Friesen, Brian
name: Baron, E.
name: Parrent, Jerod T.
name: Thomas, R. C.
name: Branch, David
name: Nugent, Peter
name: Hauschildt, Peter H.
name: Foley, Ryan J.
name: Wright, Darryl E.
name: Pan, Yen-Chen
name: Filippenko, Alexei V.
name: Clubb, Kelsey I.
name: Silverman, Jeffrey M.
name: Maeda, Keiichi
name: Shivvers, Isaac
name: Kelly, Patrick L.
name: Cohen, Daniel P.
name: Rest, Armin
name: Kasen, Daniel
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present optical spectra of the nearby Type Ia supernova SN 2011fe at 100, 205, 311, 349, and 578 days post-maximum light, as well as an ultraviolet spectrum obtained with Hubble Space Telescope at 360 days post-maximum light. We compare these observations with synthetic spectra produced with the radiative transfer code PHOENIX. The day +100 spectrum can be well fit with models which neglect collisional and radiative data for forbidden lines. Curiously, including this data and recomputing the fit yields a quite similar spectrum, but with different combinations of lines forming some of the stronger features. At day +205 and later epochs, forbidden lines dominate much of the optical spectrum formation; however, our results indicate that recombination, not collisional excitation, is the most influential physical process driving spectrum formation at these late times. Consequently, our synthetic optical and UV spectra at all epochs presented here are formed almost exclusively through recombination-driven fluorescence. Furthermore, our models suggest that the ultraviolet spectrum even as late as day +360 is optically thick and consists of permitted lines from several iron-peak species. These results indicate that the transition to the "nebular" phase in Type Ia supernovae is complex and highly wavelength-dependent.
description: 22 pages, 21 figuress, 1 table, submitted to MNRAS
AMinerGNN: Heterogeneous Graph Neural Network for Paper Click-through Rate Prediction with Fusion Query
Creators: name: Huai, Zepeng
name: Wang, Zhe
name: Zhu, Yifan
name: Zhang, Peng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Paper recommendation with user-generated keyword is to suggest papers that simultaneously meet user's interests and are relevant to the input keyword. This is a recommendation task with two queries, a.k.a. user ID and keyword. However, existing methods focus on recommendation according to one query, a.k.a. user ID, and are not applicable to solving this problem. In this paper, we propose a novel click-through rate (CTR) prediction model with heterogeneous graph neural network, called AMinerGNN, to recommend papers with two queries. Specifically, AMinerGNN constructs a heterogeneous graph to project user, paper, and keyword into the same embedding space by graph representation learning. To process two queries, a novel query attentive fusion layer is designed to recognize their importances dynamically and then fuse them as one query to build a unified and end-to-end recommender system. Experimental results on our proposed dataset and online A/B tests prove the superiority of AMinerGNN.
Measurements of the Inclusive Neutrino and Antineutrino Charged Current Cross Sections in MINERvA Using the Low-$ν$ Flux Method
Creators: name: MINERvA Collaboration
name: DeVan, J.
name: Ren, L.
name: Aliaga, L.
name: Altinok, O.
name: Bellantoni, L.
name: Bercellie, A.
name: Betancourt, M.
name: Bodek, A.
name: Budd, H.
name: Cai, T.
name: Carneiro, M. F.
name: da Motta, H.
name: Devan, J.
name: Dytman, S. A.
name: Díaz, G. A.
name: Eberly, B.
name: Endress, E.
name: Felix, J.
name: Fields, L.
name: Fine, R.
name: Gago, A. M.
name: Galindo, R.
name: Gallagher, H.
name: Ghosh, A.
name: Gran, R.
name: Harris, D. A.
name: Higuera, A.
name: Hurtado, K.
name: Kleykamp, J.
name: Kordosky, M.
name: Le, T.
name: Maher, E.
name: Manly, S.
name: Mann, W. A.
name: Marshall, C. M.
name: Caicedo, D. A. Martinez
name: McFarland, K. S.
name: McGivern, C. L.
name: McGowan, A. M.
name: Messerly, B.
name: Miller, J.
name: Mislivec, A.
name: Morfín, J. G.
name: Mousseau, J.
name: Naples, D.
name: Nelson, J. K.
name: Norrick, A.
name: Nuruzzaman
name: Paolone, V.
name: Park, J.
name: Patrick, C. E.
name: Perdue, G. N.
name: Ramirez, M. A.
name: Ransome, R. D.
name: Ray, H.
name: Rimal, D.
name: Rodrigues, P. A.
name: Ruterbories, D.
name: Schellman, H.
name: Salinas, C. J. Solano
name: Sultana, M.
name: Falero, S. Sánchez
name: Tice, B. G.
name: Valencia, E.
name: Wolcott, J.
name: Wospakrik, M.
name: Zhang, D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The total cross sections are important ingredients for the current and future neutrino oscillation experiments. We present measurements of the total charged-current neutrino and antineutrino cross sections on scintillator (CH) in the NuMI low-energy beamline using an {\em in situ} prediction of the shape of the flux as a function of neutrino energy from 2--50 GeV. This flux prediction takes advantage of the fact that neutrino and antineutrino interactions with low nuclear recoil energy ($ν$) have a nearly constant cross section as a function of incident neutrino energy. This measurement is the lowest energy application of the low-$ν$ flux technique, the first time it has been used in the NuMI antineutrino beam configuration, and demonstrates that the technique is applicable to future neutrino beams operating at multi-GeV energies. The cross section measurements presented are the most precise measurements to date below 5 GeV.
description: 8 pages, 6 figures, and 12 supplemental tables of fluxes, cross sections, breakdowns of their uncertainties, and their covariance matrices
O olhar do outro: a terra, a gente, os usos e costumes de Moçambique em meados do séc. XX através das fotografias da missão antropológica de Moçambique
Creators: name: Roque, Ana Cristina
name: Ferrão, Lívia
Publisher: name: Povos e Culturas
Year: 2007

description: Povos e Culturas, No 11 (2007): Tradições populares
Near and Far from Equilibrium Power-Law Statistics
Creators: name: Biro, Tamas S
name: Barnafoldi, Gergely G
name: Biro, Gabor
name: Shen, Ke Ming
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyze the connection between $p_T$ and multiplicity distributions in a statistical framework. We connect the Tsallis parameters, $T$ and $q$, to physical properties like average energy per particle and the second scaled factorial moment, $F_2=\langle n(n-1) \rangle / {\langle n \rangle}^2$, measured in multiplicity distributions. Near and far from equilibrium scenarios with master equations for the probability of having $n$ particles, $P_n$, are reviewed based on hadronization transition rates, $μ_n$, from $n$ to $n+1$ particles.
description: Talk given by T.S.Biro at SQM 2016, Berkeley, 4 pages
Sharp isoperimetric inequalities for small volumes in complete noncompact Riemannian manifolds of bounded geometry involving the scalar curvature
Creators: name: Nardulli, Stefano
name: Acevedo, Luis Eduardo Osorio
Publisher: name: arXiv
Year: 2016
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 49Q20, 58E99, 53A10, 53C23, 53C21, 49Q05, 49Q10, 49Q15, 53C42, 83C99

description: We provide an isoperimetric comparison theorem for small volumes in an $n$-dimensional Riemannian manifold $(M^n,g)$ with strong bounded geometry, as in Definition $2.3$, involving the scalar curvature function. Namely in strong bounded geometry, if the supremum of scalar curvature function $S_g
description: 72 pages, 1 figure. Some typos and cut paste errors are corrected a new entry in the bibliography is added
Entanglement enhancement in cavity magnomechanics by an optical parametric amplifier
Creators: name: Hussain, Bakht
name: Qamar, Shahid
name: Irfan, Muhammad
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a method to enhance bipartite and tripartite entanglement in cavity magnomechanics using an optical parametric amplifier (OPA). We analyze this system and identified parametric regimes where different types of entanglement are enhanced. We show that a proper choice of the phase of the parametric amplifier leads to the enhancement of the bipartite entanglements. Moreover, the tripartite entanglement is also significantly enhanced in the presence of OPA. The OPA not only enhances the strength of entanglement but also increases the domain of entanglement over a wider space of detunings as compared to the system when no OPA is present. Similarly, the robustness of entanglement against temperature is also enhanced. Another important consequence of OPA is the fact that it relaxes the requirement of strong magnon-phonon coupling to generate cavity-magnon entanglement which is necessary for the case when OPA is not present. We believe that the presented scheme is a step forward to realize robust quantum entanglement using current technology.
description: 8 pages, 7 figures
Social Media - Moderation
Creators: name: Sasse, Julia
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Social and Behavioral Sciences

description: In this project, we investigate the extent to which visibility of moderation as an intervention against sexist content determines its acceptance and effectiveness by both female and male social media users. Specifically, we differentiate between two aspects of visibility, namely of the initial sexist attack and whether the sexist attack is annotated, either with a public commentary (condemning the attack) or with a reference to a private message.