cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Nature as a model: the natural paradigm as a design method in Leonardo
Creators: name: Ferri, Patrizia
Publisher: name: Scienze del Territorio
Year: 2022

description: Leonardo’s entire work is triggered by observation of nature read as a model and a guide, a generative and structural principle whose exemplary value relies on inner balances among elements rather than on domination practices; thus assuming natural processes as a methodological paradigm for sciences and the arts. His interdisciplinary attitude, committed to a synthesis of diverse forms of knowledge, identifies him as the first experimenter of mostly unknown and overlapping territories, and requires a fluid critical view, not reducible to monolingual approaches, to be consistently interpreted. His work, which may indeed be regarded as contemporary, is always based on interrelations between subjects and objects, thus anticipating a systemic interpretation of life as a complex dynamic of metabolic processes. His approach, fuelled by a deep awareness and respect for life in all its forms, always honours and combines specificities into holistic visions: in planning, he mingles aesthetics with social and environmental ethics around an idea (revolutionary for his times) of the city as a public space, where built and open areas meet together each with their distinct morphologies and social features. This foreshadows modern urbanism and organic architecture, as well as eco-sustainable urban regeneration, a place-based approach to eco-design based on listening to places and communities.
description: Scienze del Territorio, Vol. 10 No. 2 (2022): Eco-territorialism. The bioregional perspective
Operads and Phylogenetic Trees
Creators: name: Baez, John C.
name: Otter, Nina
Publisher: name: arXiv
Year: 2015
Subjects: subject: Category Theory (math.CT)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics

description: We construct an operad $\mathrm{Phyl}$ whose operations are the edge-labelled trees used in phylogenetics. This operad is the coproduct of $\mathrm{Com}$, the operad for commutative semigroups, and $[0,\infty)$, the operad with unary operations corresponding to nonnegative real numbers, where composition is addition. We show that there is a homeomorphism between the space of $n$-ary operations of $\mathrm{Phyl}$ and $\mathcal{T}_n\times [0,\infty)^{n+1}$, where $\mathcal{T}_n$ is the space of metric $n$-trees introduced by Billera, Holmes and Vogtmann. Furthermore, we show that the Markov models used to reconstruct phylogenetic trees from genome data give coalgebras of $\mathrm{Phyl}$. These always extend to coalgebras of the larger operad $\mathrm{Com} + [0,\infty]$, since Markov processes on finite sets converge to an equilibrium as time approaches infinity. We show that for any operad $O$, its coproduct with $[0,\infty]$ contains the operad $W(O)$ constucted by Boardman and Vogt. To prove these results, we explicitly describe the coproduct of operads in terms of labelled trees.
description: 48 pages, 3 figures
Time Delay Analysis of the Lensed Quasar SDSS J1001+5027
Creators: name: Aghamousa, Amir
name: Shafieloo, Arman
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We modify the algorithm we proposed before in Aghamousa & Shafieloo (2015) on time delay estimation of the strong lens systems incorporating weighted cross-correlation and weighted summation of correlation coefficients. We show the high performance of this algorithm by applying it on Time Delay Challenge (TDC1) simulated data. We apply then our proposed method on the light curves of the lensed quasar SDSS J1001+5027 since this system has been well studied by other groups to compare our results with their findings. In this work we propose a new estimator namely "mirror" estimator along with a list of criteria for reliability test of estimation. Our mirror estimator results to $-117.1^{+7.1}_{-3.7}$ and $-117.1^{+7.2}_{-8.8}$ using simple Monte Carlo simulations and simulated light curves provided by Rathna Kumar et al. (2013) respectively. Although TDC1 simulations do not reflect the properties of SDSS J1001+5027 light curves, using these simulations results to smaller uncertainty which shows the higher quality observations can lead to substantially more precise time delay estimation. Our time delay estimation is in agreement with findings of the other groups for this strong lens system and the difference in the size of the error bars reflects the importance of appropriate light curve simulations.
description: 19 pages, 5 figures, 1 table, discussions extended, methodology improved, main results unchanged, matches the final version published in ApJ
Some notes on the Kodama state, maximal symmetry, and the isolated horizon boundary condition
Creators: name: Bodendorfer, Norbert
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We recall some well and some less known results about the Kodama state and the related $θ$ ambiguity in defining canonical variables. Based on them, we make some comments highlighting that the Kodama state for real connection variables can be given a precise meaning and that it implements a vacuum peaked on a (in a suitable sense) maximally symmetric geometry. We also highlight the similarity of this construction with the isolated horizon boundary condition $F \propto Σ$ and stress that it is, in agreement with earlier work, inadequate to define the notion of a quantum horizon.
description: 6+3 pages; v2: journal version, slight shortening and added clarifications
An anelastic approximation arising in astrophysics
Creators: name: Donatelli, Donatella
name: Feireisl, Eduard
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 76N10 (35B40 35B45 35Q35 35Q85 85A30)

description: We identify the asymptotic limit of the compressible non-isentropic Navier-Stokes system in the regime of low Mach, low Froude and high Reynolds number. The system is driven by a long range gravitational potential. We show convergence to an anelastic system for ill-prepared initial data. The proof is based on frequency localized Strichartz estimates for the acoustic equation based on the recent work of Metcalfe and Tataru.
description: Updated to author's accepted manuscript
Place consciousness as a method. Reterritorialisation processes and governance practices in the case of the Vassallo Administration in Pollica
Creators: name: Panepinto, Giulia
Publisher: name: Scienze del Territorio
Year: 2022

description: The article evaluates in a qualitative and diachronic key the characteristics of self-sustainability and social innovation of the local development path activated by the Administration lead by Angelo Vassallo, mayor of Pollica from 1995 to 2010. This empirical reflection is read through a located and territorial perspective, and placed within the recent debate on marginal areas. The research topic has public relevance, as a a practice of ‘society self-defence’ where the commons represent the privileged lever of local government. Indeed, it is possible to discern, in it, attempts to reconnect the economy to the territory through slow tourism and the rediscovery of local stone, and a political planning that follows a ‘grassroots globalisation’ logic. This government experience, which ended with the murder of the ‘Fisherman Mayor’, concerns areas further marginalised by the pervasiveness of criminal economies. The cognitive objective of the research is to analyze how the territory is transformed when a public actor changes the way of conceiving local development. The research design is inspired by the territorialist analytical scheme, which observe the territory along four forms of space: political, relational, economic, ecological. The empirical research (carried out between December 2021 and January 2022) uses institutional sources (secondary quantitative data, municipal council deliberations) and interviews with privileged witnesses.
description: Scienze del Territorio, Vol. 10 No. 2 (2022): Eco-territorialism. The bioregional perspective
Weakly asymmetric bridges and the KPZ equation
Creators: name: Labbé, Cyril
Publisher: name: arXiv
Year: 2016
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We consider the corner growth dynamics on discrete bridges from $(0,0)$ to $(2N,0)$, or equivalently, the weakly asymmetric simple exclusion process with $N$ particles on $2N$ sites. We take an asymmetry of order $N^{-α}$ with $α\in (0,1)$ and provide a complete description of the asymptotic behaviour of this model. In particular, we show that the hydrodynamic limit of the density of particles is given by the inviscid Burgers equation with zero-flux boundary condition. When the interface starts from the flat initial profile, we show that KPZ fluctuations occur whenever $α\in (0,1/3]$. In the particular regime $α=1/3$, these KPZ fluctuations suddenly vanish at a deterministic time.
Mono-jet Signatures of Gluphilic Scalar Dark Matter
Creators: name: Godbole, Rohini M.
name: Mendiratta, Gaurav
name: Shivaji, Ambresh
name: Tait, Tim M. P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A gluphilic scalar dark matter (GSDM) model has recently been proposed as an interesting vision for WIMP dark matter communicating dominantly with the Standard Model via gluons. We discuss the collider signature of a hard jet recoiling against missing momentum ("mono-jet") in such a construction, whose leading contribution is at one-loop. We compare the full one-loop computation with an effective field theory (EFT) treatment, and find (as expected) that EFT does not accurately describe regions of parameter space where mass of the colored mediator particles are comparable to the experimental cuts on the missing energy. We determine bounds (for several choices of SU(3) representation of the mediator) from the $\sqrt{s}=$ 8 TeV data, and show the expected reach of the $\sqrt{s}=$ 13 TeV LHC and a future 100 TeV $pp$ collider to constrain or discover GSDM models.
description: 7 pages, 11 figues and 1 table
From sustainability to self-sustainability: considerations on the eco-territorialist proposal
Creators: name: Ferreri, Fabrizio
Publisher: name: Scienze del Territorio
Year: 2022

description: In the transition from sustainability to self-sustainability, which corresponds to the revision of the notion of environment in the direction of the concept of territory, it is possible to highlight the epistemological turning point of eco-territorial proposal. The environmental and ecological issue requires a holistic consideration, in the synthesis between theory and practice, capable of reaffirming a new subjectivity of the territory within the framework of an 'other' development compared to the dominant neoliberal model. 'Return to the territory' and 'place awareness' are welded together for a territorial ecology, not simply defensive, which questions in depth the generative rules of the relationship between man and territory in order to restore place-based social, cultural and economic forms of life.
description: Scienze del Territorio, Vol. 10 No. 2 (2022): Eco-territorialism. The bioregional perspective
Upper Valdarno and the Florence Area. Vulnerability and hydraulic risk fifty-six years later
Creators: name: Baldeschi, Paolo
Publisher: name: Scienze del Territorio
Year: 2022

description: Climate change brings periods of severe drought and catastrophic floods, events that are happening all over the world right now. This article evaluates the possibility that disastrous flood events, such as that of 1966, still occur in Valdarno and Florentine area, the latter taken as a sample case. A holistic approach such as the territorialist one allows going beyond customary end-of-pipe solutions, converting emergencies into opportunities to strengthen territorial systems as a whole. ‘River contracts’ extended to the entire Valdarno area, in particular, can be an important tool to increase the resilience of the whole basin, but only in the framework of a strategy considering environmental protection as the central goal of territorial policies.
description: Scienze del Territorio, Vol. 10 No. 2 (2022): Eco-territorialism. The bioregional perspective
Bioregion and environmental stewardship among ethics, development and conservation
Creators: name: Agostini, Stella
Publisher: name: Scienze del Territorio
Year: 2022

description: Hydro-geological and climatic emergencies highlight the crisis of the environmental system by marking reactions so deferred in time that the man in the street cannot perceive their social convenience. Starting from an ecological interpretation of history, the paper addresses the problem of redefining ethical content of environmental conservation and development strategies following each other in response to emergencies, suggesting a reflection on which utopian visions and real territories are those where the preconditions of environmental balance could still be re-established. If spatial policies affect the environment and the quality of life, as well as land use conditions are crucial in reducing or accentuating intensity, frequency and duration of extreme events, it is equally important to develop a land ethic of the earth making everyone capable to perceive themselves as part of the biota, the ensemble of organisms that occupy a given area in an ecosystem. Rediscovering the importance of roots and cooperating with our biotic community is the crucial step to transform a merely utopian planning into a new eco-territorialist vision, starting at the local scale what is so hard to achieve at the global one.
description: Scienze del Territorio, Vol. 10 No. 2 (2022): Eco-territorialism. The bioregional perspective
Nonlinear predictive models computation in ADPCM schemes
Creators: name: Faundez-Zanuy, Marcos
Publisher: name: arXiv
Year: 2022
Subjects: subject: Sound (cs.SD)
subject: Machine Learning (cs.LG)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Recently several papers have been published on nonlinear prediction applied to speech coding. At ICASSP98 we presented a system based on an ADPCM scheme with a nonlinear predictor based on a neural net. The most critical parameter was the training procedure in order to achieve good generalization capability and robustness against mismatch between training and testing conditions. In this paper, we propose several new approaches that improve the performance of the original system in up to 1.2dB of SEGSNR (using bayesian regularization). The variance of the SEGSNR between frames is also minimized, so the new scheme produces a more stable quality of the output.
A Gutzwiller trace formula for large hermitian matrices
Creators: name: Bolte, Jens
name: Egger, Sebastian
name: Keppeler, Stefan
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mathematical Physics (math-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We develop a semiclassical approximation for the dynamics of quantum systems in finite-dimensional Hilbert spaces whose classical counterparts are defined on a toroidal phase space. In contrast to previous models of quantum maps, the time evolution is in continuous time and, hence, is generated by a Schrödinger equation. In the framework of Weyl quantisation, we construct discrete, semiclassical Fourier integral operators approximating the unitary time evolution and use these to prove a Gutzwiller trace formula. We briefly discuss a semiclassical quantisation condition for eigenvalues as well as some simple examples.
description: 41 pages; extended introduction; added appendix an comparison of anti-Wick and Weyl quantisation
Classical Stückelberg interferometry of a nanomechanical two-mode system at room temperature
Creators: name: Seitner, Maximilian J.
name: Ribeiro, Hugo
name: Kölbl, Johannes
name: Faust, Thomas
name: Kotthaus, Jörg P.
name: Weig, Eva M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The transition from classical to quantum mechanics has intrigued scientists in the past and remains one of the most fundamental conceptual challenges in state-of-the-art physics. Beyond the quantum mechanical correspondence principle, quantum-classical analogies have attracted considerable interest. In this work, we present classical two-mode interference for a nanomechanical two-mode system, realizing classical Stückelberg interferometry. In the past, Stückelberg interferometry has been investigated exclusively in quantum mechanical two-level systems. Here, we experimentally demonstrate a classical analog of Stückelberg interferometry taking advantage of coherent energy exchange between two-strongly coupled, high quality factor nanomechanical resonator modes. Furthermore, we provide an exact theoretical solution for the double passage Stückelberg problem which reveals the analogy of the return probabilities in the quantum mechanical and the classical version of the problem. This result qualifies classical two-mode systems at large as a testbed for quantum mechanical interferometry.
Performance Analysis of Source Image Estimators in Blind Source Separation
Creators: name: Koldovský, Zbyněk
name: Nesta, Francesco
Publisher: name: arXiv
Year: 2016
Subjects: subject: Sound (cs.SD)
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
subject: 15-04

description: Blind methods often separate or identify signals or signal subspaces up to an unknown scaling factor. Sometimes it is necessary to cope with the scaling ambiguity, which can be done through reconstructing signals as they are received by sensors, because scales of the sensor responses (images) have known physical interpretations. In this paper, we analyze two approaches that are widely used for computing the sensor responses, especially, in Frequency-Domain Independent Component Analysis. One approach is the least-squares projection, while the other one assumes a regular mixing matrix and computes its inverse. Both estimators are invariant to the unknown scaling. Although frequently used, their differences were not studied yet. A goal of this work is to fill this gap. The estimators are compared through a theoretical study, perturbation analysis and simulations. We point to the fact that the estimators are equivalent when the separated signal subspaces are orthogonal, and vice versa. Two applications are shown, one of which demonstrates a case where the estimators yield substantially different results.
description: 24 pages
The Relationship Between Muscle Endurance and the Frequency Speed of Kick Test in Martial Arts Athletes
Creators: name: Tangonan, Andreana Elline
Publisher: name: University of Illinois at Chicago
Year: 2023

description: Purpose: Martial arts are combat sports that are practiced globally that require a combination of strength, power, and endurance. One of the most popular assessments used to assess muscular endurance in martial arts is the frequency speed of kick test (FSKT). The FSKT measures the number of kicks an athlete can perform continuously over a short duration which has been used as a correlate for sparring performance. However, it is unclear if the FSKT actually measures muscular endurance and strength. Therefore, the purpose of this study was to compare muscle strength and endurance between the FSKT and a gold standard laboratory measurement. Methods: Ten participants (6M/4F, 30.29.9 years, 170.712.2 cm, 73.115.0 kg, 17.011.1 years of experience) volunteered for the study. All participants completed the FSKT and isokinetic and isometric strength and endurance measures. The FSKT included 5 rounds (10 seconds on, 10 seconds rest) of as many alternating kicks as possible. Isokinetic testing included 10 repetitions of knee extension and flexion at 180 deg/s and isometric testing included one 30 second hold at 90 degrees of knee flexion for both knee extensors and flexors. Paired t-tests were used to compare limbs and Pearson correlations were used to quantify the relationship between strength variables and the FSKT performance. Significant correlations were retained for a stepwise regression model. Results: There were no significant differences between limbs except for the hamstring fatigue index (p=0.03). The nondominant quadriceps fatigue index (r=-0.71) and the dominant hamstring fatigue index (r=-0.63) were significantly correlated with FSKT performance. The nondominant quadriceps fatigue index was retained in a regression model as a significant predictor for FSKT and explained 50.5% of the variance in performance. Conclusion: Greater endurance of the nondominant quadriceps are associated with increased performance on the FSKT. Therefore, it may be beneficial for martial arts athletes to focus on building the endurance of the nondominant leg to reduce the risk of injury and increased performance.
Bioregion as a knowledge and project tool for metropolitan territories. Genoa: the case of Polcevera Valley
Creators: name: Lombardini, Giampiero
Publisher: name: Scienze del Territorio
Year: 2022

description: The Polcevera Valley historically represents a fundamental link between the central Ligurian Sea and the Po Valley. In the short century of the economic-industrial transition, this area experienced one of the most intense industrialization and urbanization processes at the national level, becoming the site of wide productive compounds linked to newly formed workers’ quarters. After the tragic collapse of the Morandi Bridge (2018), and as a consequence of a de-industrialisation process underway for at least three decades, the unsustainability of the industrial and urban-centric settlement model and the need to rethink its urban structure according to new resilient approaches became evident. The paper explores the potential deriving from a reconsideration of the Valley settlement model based on bioregional principles. Rethinking the valley territory, starting from its historically resilient and metabolic connotation, allows us to build an interpretation of the urban area focused on the common governance of resources, where hilly areas, green/blue networks and brownfield spaces could acquire a key role in supplying ecosystem services and urban welfare and foster a new urban economy. Bioregional transformation scenarios could at the same time be the basis for reformulating hypotheses of reuse and regeneration of long-term territorial heritage which tend to be ignored today.
description: Scienze del Territorio, Vol. 10 No. 2 (2022): Eco-territorialism. The bioregional perspective
Beam dynamics corrections to the Run-1 measurement of the muon anomaly $a_μ$ at Fermilab
Creators: name: Lucà, Alessandra
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The Fermi National Accelerator Laboratory (FNAL) Muon $g-2$ Experiment has measured the positive muon magnetic anomaly $a_μ \equiv (g_μ-2)/2$ with a precision of 0.46 parts per million, with data collected during its first physics run in 2018. The experimental result combined with the measurement from the former experiment at Brookhaven National Laboratory increases the tension with the Standard Model expectation to $4.2σ$, thus strengthening evidence for new physics. The magnetic anomaly is determined from the precision measurements of the muon spin precession frequency, relative to the muon momentum, and the average magnetic field seen by the beam. In an ideal case with muons orbiting in a horizontal plane with a uniform vertical magnetic field, the anomalous precession frequency $ω_a$ is given by the difference between the spin~($s$) and cyclotron~($c$) frequencies, $ω_a = ω_s - ω_c$. The observable $ω_a$ is proportional to $a_μ$. This proceeding presents the beam dynamics systematic corrections that are required to adjust the measured muon precession frequency $ω^{m}_{a}$ to its true physical value $ω_{a}$.
description: The 22nd International Workshop on Neutrinos from Accelerators (NuFact2021)
Bergman kernels on punctured Riemann surfaces
Creators: name: Auvray, Hugues
name: Ma, Xiaonan
name: Marinescu, George
Publisher: name: arXiv
Year: 2016
Subjects: subject: Differential Geometry (math.DG)
subject: Complex Variables (math.CV)
subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: In this paper we consider a punctured Riemann surface endowed with a Hermitian metric which equals the Poincaré metric near the punctures and a holomorphic line bundle which polarizes the metric. We show that the Bergman kernel can be localized around the singularities and its local model is the Bergman kernel of the punctured unit disc endowed with the standard Poincaré metric. As a consequence, we obtain an optimal uniform estimate of the supremum norm of the Bergman kernel, involving a fractional growth order of the tensor power.
description: 42 pages, 2 figures; v.2 is a final update to agree with the published paper
Low-amplitude, short-timescale photometric variability in a sample of M dwarf stars
Creators: name: Bruno, Giovanni
name: Pagano, Isabella
name: Scandariato, Gaetano
name: CHEOPS Consortium
Publisher: name: Zenodo
Year: 2023
Subjects: Stars
Stellar activity
Stellar flares
Photometry
Exoplanets
CHEOPS
TESS
PLATO

description: If we want to understand magnetic reconnection in stars, as well as planet atmospheres and habitability (particularly around cool, active hosts), we have to understand stellar flares.
 As part of the CHEOPS GTO program, we are using the highest time cadence the CHEOPS and TESS space telescopes are capable of to probe white-light flare detailed morphologies in a sample of ~130 late K and M stars.
description: GBr, IPa and GSc acknowledge support from CHEOPS ASI-INAF agreement n. 2019-29-HH.0.
description: {"references": ["Morgado et al. (2022), A&A 664, id.L15", "Mendoza et al. (2022), AJ 164, 1, id.17", "Pont et al. (2006), MNRAS 373, 1"]}
Astrometric and photometric verification of faint blue white dwarfs in the Gaia catalogue of nearby stars
Creators: name: Scholz, Ralf-Dieter
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The Gaia catalogue of nearby stars (GCNS) divided all objects with parallaxes $>$10mas into GCNS-selected and GCNS-rejected 100pc samples. Below the white dwarf (WD) sequence in the complete GCNS color-magnitude diagram (CMD), at $Gabs>14.7+4.7(G-RP)$, there appear 60 GCNS-selected faint blue white dwarfs (FBWDs). However this CMD region is also populated by 411 GCNS-rejected objects, mainly from crowded regions towards the Galactic centre and the Magellanic Clouds. The WD catalog of Gentile Fusillo et al. (2021) lists only 47 GCNS-selected but also 8 GCNS-rejected objects. I confirm 59 of the GCNS-selected but none of the GCNS-rejected objects as FBWDs from visual inspection and a proper motion check using additional optical sky surveys. Hence FBWDs form an additional branch in the CMD. Compared to the full GCNS-selected 100pc sample, FBWDs have relatively high proper motions and tangential velocities. They represent interesting targets for studies of ultracool or infrared-faint, and possibly also ultramassive WDs.
description: 5 pages, 1 figure, the file gedr3_sel_59_FBWDs.fits (not included in the RNAAS paper) contains a table of 59 confirmed FBWDs with their selected Gaia EDR3 parameters
Electron and muon anomalous magnetic dipole moment in a 3-3-1 model
Creators: name: De Conto, G.
name: Pleitez, V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate, in the context of a 3-3-1 model with heavy charged leptons, constraints on some parameters of the extra particles in the model by imposing that their contributions to both the electron and muon $(g-2)$ factors are in agreement with experimental data up to 1$σ$-3$σ$. In order to obtain realistic results we use some of the possible solutions of the left- and right- unitary matrices that diagonalize the lepton mass matrices, giving the observed lepton masses and at the same time allowing to accommodate the Pontecorvo-Maki-Nakagawa-Sakata (PMNS) mixing matrix. We show that, at least up to 1-loop order, in the particular range of the space parameter that we have explored, it is not possible to fit the observed electron and muon $(g-2)$ factors at the same time unless one of the extra leptons has a mass of the order of 20-40 GeVs and the energy scale of the 331 symmetry to be of around 60-80 TeVs.
description: 34 pages, 19 figures
Asteroseismic determination of fundamental parameters of sun-like stars using multi-layered neural networks
Creators: name: Verma, Kuldeep
name: Hanasoge, Shravan
name: Bhattacharya, Jishnu
name: Antia, H M
name: Krishnamurthi, Ganapathy
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The advent of space-based observatories such as CoRoT and Kepler has enabled the testing of our understanding of stellar evolution on thousands of stars. Evolutionary models typically require five input parameters, the mass, initial Helium abundance, initial metallicity, mixing- length (assumed to be constant over time), and the age to which the star must be evolved. Some of these parameters are also very useful in characterizing the associated planets and in studying galactic archaeology. How to obtain these parameters from observations rapidly and accurately, specifically in the context of surveys of thousands of stars, is an outstanding ques- tion, one that has eluded straightforward resolution. For a given star, we typically measure the effective temperature and surface metallicity spectroscopically and low-degree oscillation frequencies through space observatories. Here we demonstrate that statistical learning, using artificial neural networks, is successful in determining the evolutionary parameters based on spectroscopic and seismic measurements. Our trained networks show robustness over a broad range of parameter space, and critically, are entirely computationally inexpensive and fully automated. We analyze the observations of a few stars using this method and the results com- pare well to inferences obtained using other techniques. This method is both computationally cheap and inferentially accurate, paving the way for analyzing the vast quantities of stellar observations from past, current, and future missions.
description: Submitted. 9 pages, 7 Figures, 1 Table, MNRAS
Studying haptics as a way to support social interactions in XR
Creators: name: Lécuyer, Anatole
Publisher: name: Zenodo
Year: 2023

description: Slides of the webinar "Studying haptics as a way to support social interactions in XR", held in June 15th, 2023, and part of the GuestXR webinar series "Fostering inclusion and social interaction in XR".
Aging studies of drift chambers of the HERA-B outer tracker using CF 4 -based gases
Creators: name: Schreiner, Alexander
Publisher: name: Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I
Year: 2001
Subjects: subject: Driftkammer
subject: Alterung
subject: Korrosion
subject: CF4
subject: drift-chamber
subject: aging
subject: corrosion
subject: 530 Physik
subject: 29 Physik, Astronomie
subject: UN 7230

description: ÿþD
description: The intense radiation environment in the HERA-B experiment, being comparable to that of LHC experiments, requires that the detector be very resistant to high radiation loads. The Outer Tracker of HERA-B consists of drift tubes folded from polycarbonate foils (honeycomb) and is operated with a CF4-containing gas mixture. Aging tests made in HERA-B, under hadronic irradiation, using prototype drift chambers showed a rapid rise of self-sustaining dark currents (Malter effect). Extensive aging studies were carried out with the objective to find an appropriate set of construction materials as well as optimal operational parameters. It was shown that the gain loss (anode aging) and the Malter effect could be avoided after replacing the methane in the counting gas, Ar/CF4/CH4, by CO2 and applying cathode coating. However, other, relatively less known aging effects appeared: rising conductivity of the wire-supporting strips and wire corrosion. These two aging effects could also be prevented keeping water at a proper concentration. The aging tests showed that a too high water content (above about 500 ppm) gives rise to strip conductivity, conversely, a too low water content (below about 100 ppm) enhances anode wire corrosion. In an attempt to interpret the test results, plasma phenomena like quenching by different admixtures, production of molecular species, concentration of long-lived HF produced via CF4 dissociation in the avalanche were semi-quantitatively estimated. This work contains also a comprehensive summary of all aging studies for the Outer Tracker and an overview of the literature on wire chamber aging, in particular with CF4-based counting gas mixtures.
A generally-relativistic gauge classification of the Dirac fields
Creators: name: Fabbri, Luca
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider generally-relativistic gauge transformations for the spinorial fields finding two mutually exclusive but together exhaustive classes in which fermions are placed adding supplementary information to the results obtained by Lounesto, and identifying quantities analogous to the momentum vector and the Pauli-Lubanski axial vector we discuss how our results are similar to those obtained by Wigner; by taking into account the system of Dirac field equations we will investigate the consequences for the dynamics: and in particular we shall address the problem of getting the non-relativistic approximation in a consistent way. We are going to comment on extensions.
description: 7 pages
La transformation Digitale et l'industrie 4.0 : Quels défis pour les PME marocaines ?
Creators: name: Mourad ZENASNI
Publisher: name: Zenodo
Year: 2024

description: Suite à la révolution numérique les modes de production ont évolué vers plus de performance et d’efficience. D’où l’avènement de la récente révolution industrielle nommée aussi l’industrie 4.0 ou l’industrie future qui est une révolution interconnectée avec toutes les parties prenantes des processus de production : Les machines, les produits et les collaborateurs.

D’après l’enquête de l’Institut Royal des Études Stratégique de 2023, seulement 10% des PME qui manquent de connaissances sur l’industrie 4.0. Or, si cette connaissance est nécessaire, reste insignifiante vis-à-vis des défis que représente l’industrie 4.0 pour les PME industrielles marocaines. Ces défis sont nombreux, entre autres, manques des ressources dans ces différents aspects humaines surtout la dotation de compétences numériques, financières notamment celles destinées à la R et D, technologiques en termes d’l'intelligence artificielle, d'automatisation, d’Internet des objets…, organisationnelles, etc.

L’implémentation de l’industrie de future par les PME marocaines notamment celles qui cherchent l’innovation et l’expansion du marché à l’international, nécessitent de leur part une approche proactive , un investissement dans le futur , une insertion dans un écosystème qui réunit les acteurs de l'industrie, de l'éducation et de l'innovation afin de trouver une place dans le monde actuel marqué par la course accrue vers une industrie plus moderne, pointue ,compétitive, innovante et respectueuse de l’environnement.
Preliminary geometrical and microstructural characterization of WC-reinforced NiCrBSi matrix composites fabricated by plasma transferred arc additive manufacturing through Taguchi-based experimentation
Creators: Mercado Rojas, J.G.
Ghasri-Khouzani, M.
Wolfe, T.
Fleck, B.A.
Henein, H.
Qureshi, A.J.
Publisher: name: University of Alberta Library
Year: 2021

Metal matrix composites enhance the wear and corrosion properties of components in heavy-duty industries. This work reports the preliminary effects of process parameters such as current, linear speed, powder flow rate, nozzle angle, and powder, shield and center gases at the macro-scale and micro-scale of singletrack multiple-layers depositions. The use of plasma transferred arc as an additive manufacturing system acquiesce to generate enough energy for a fast solidification rate of the matrix without compromising the carbide in the composite. The results show that the bead height is mainly affected by the powder flow rate, the powder gas, and the travel speed at the macro-scale, . The bead width has a close relationship with powder

flow rate, powder gas, and current, the latter contributing to the formation of a slumping phenomenon due to heat accumulation. The volumetric deposition is affected by similar parameters to the bead height. At the micro-scale, the process parameters did not show significant carbide changes but validate its homogeneous distribution. The electron microscope observation exhibited the composite’s high quality due to the fast

solidification of the process. Results demonstrate that the porosity is mainly affected by the powder flow rate. By understanding the preliminary contribution of process parameters, this manufacturing process can print near net-shaped parts minimizing the post-processing of metal additive manufacturing components. Therefore, this work contributes to implementing a preliminary experimental methodology to understand the deposition process of WC-reinforced composites in plasma transferred arc additive manufacturing.
Theory of Electron Transport through a Single Molecule
Creators: name: Althobaiti, Hanan
Publisher: name: Lancaster University
Year: 2023

description: Understanding the orbital alignment of molecules sandwiched between metal electrodes is essential in the design of applicable molecular electronic devices. Orbital alignment is determined both by the molecular backbone structure and the molecule-electrode interface. This thesis presents a series of studies into the electronic and thermoelectric properties of 6 oligo (phenylene-ethynylene) OPE-based molecules trapped between the single-layer graphene (SLG) and a gold electrode to form an asymmetric junction. This study also employs 4 different anchor groups including thiol, pyridine, thioacetate and thioether. In the first part of this thesis, the theoretical tools, employed to investigate electron-transport properties of molecular junctions, are described. In chapter 2, Density Functional Theory (DFT), which is implemented in the SIESTA code, will be discussed. This provides the ground state wave functions for molecules and the Hamiltonians for molecular junctions, which is the first step in the transport calculations. Chapter 3 presents the theoretical basis for calculating the electric and thermoelectric properties, based on the Green’s function formalism, which is implemented in the quantum transport code GOLLUM. In chapter 3, I present solutions of Green’s functions for infinite and semi-infinite chains and the transmission coefficient equation, which forms the theoretical basis of this code. Chapter 4 is the first results chapter in this thesis, which demonstrates the transport properties of the six types of asymmetric junction modelled using a combination of density-functional theory and quantum transport theory. In this study, through a combined experimental and theoretical study, I show that the control of orbital alignment can be achieved by applying an external gate to six types of OPE-based molecules, which in turn control the electron transport within the HOMO-LUMO energy gap. I also demonstrate that the shape of the gold electrode (i.e., flat versus cluster) may affect the alignment of the HOMO and LUMO levels of the junction with respect to the Fermi level of the electrodes. Atheoretical investigation into the Seebeck coefficient is performed in chapter 5 using the first principles quantum transport method. This is carried out for six OPE-based molecules with two different gold electrode geometries (i.e., flat and cluster).
The Menu-Size Complexity of Revenue Approximation
Creators: name: Babaioff, Moshe
name: Gonczarowski, Yannai A.
name: Nisan, Noam
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences

description: Consider a monopolist selling $n$ items to an additive buyer whose item values are drawn from independent distributions $F_1,F_2,\ldots,F_n$ possibly having unbounded support. Unlike in the single-item case, it is well known that the revenue-optimal selling mechanism (a pricing scheme) may be complex, sometimes requiring a continuum of menu entries. Also known is that simple mechanisms with a bounded number of menu entries can extract a constant fraction of the optimal revenue. Nonetheless, whether an arbitrarily high fraction of the optimal revenue can be extracted via a bounded menu size remained open. We give an affirmative answer: for every $n$ and $\varepsilon>0$, there exists $C=C(n,\varepsilon)$ s.t. mechanisms of menu size at most $C$ suffice for obtaining $(1-\varepsilon)$ of the optimal revenue from any $F_1,\ldots,F_n$. We prove upper and lower bounds on the revenue-approximation complexity $C(n,\varepsilon)$ and on the deterministic communication complexity required to run a mechanism achieving such an approximation.
Thermal Light as a Mixture of Sets of Pulses: the Quasi-1D Example
Creators: name: Branczyk, Agata M.
name: Chenu, Aurelia
name: Sipe, J. E.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Chemical Physics (physics.chem-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The relationship between thermal light and coherent pulses is of fundamental and practical interest. We now know that thermal light cannot be represented as a statistical mixture of single pulses. In this paper we ask whether or not thermal light can be represented as a statistical mixture of sets of pulses. We consider thermal light in a one-dimensional wave-guide, and find a convex decomposition into products of orthonormal coherent states of localized, nonmonochromatic modes.
description: 6 pages and 3 figures, published version
Minimap and miniasm: fast mapping and de novo assembly for noisy long sequences
Creators: name: Li, Heng
Publisher: name: arXiv
Year: 2015
Subjects: subject: Genomics (q-bio.GN)
subject: FOS: Biological sciences

description: Motivation: Single Molecule Real-Time (SMRT) sequencing technology and Oxford Nanopore technologies (ONT) produce reads over 10kbp in length, which have enabled high-quality genome assembly at an affordable cost. However, at present, long reads have an error rate as high as 10-15%. Complex and computationally intensive pipelines are required to assemble such reads. Results: We present a new mapper, minimap, and a de novo assembler, miniasm, for efficiently mapping and assembling SMRT and ONT reads without an error correction stage. They can often assemble a sequencing run of bacterial data into a single contig in a few minutes, and assemble 45-fold C. elegans data in 9 minutes, orders of magnitude faster than the existing pipelines. We also introduce a pairwise read mapping format (PAF) and a graphical fragment assembly format (GFA), and demonstrate the interoperability between ours and current tools. Availability and implementation: https://github.com/lh3/minimap and https://github.com/lh3/miniasm Contact: hengli@broadinstitute.org
description: Identical to the published version except formatting
Partial covering arrays for data hiding and quantization
Creators: name: Potapov, Vladimir N.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Information Theory (cs.IT)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We consider the problem of finding a set (partial covering array) $S$ of vertices of the Boolean $n$-cube having cardinality $2^{n-k}$ and intersecting with maximum number of $k$-dimensional faces. We prove that the ratio between the numbers of the $k$-faces containing elements of $S$ to $k$-faces is less than $1-\frac{1+o(1)}{\sqrt{2πk}}$ as $n\rightarrow\infty$ for sufficiently large $k$. The solution of the problem in the class of linear codes is found. Connections between this problem, cryptography and an efficiency of quantization are discussed.
description: 7 pages
Structure-based control of complex networks with nonlinear dynamics
Creators: name: Zañudo, Jorge G. T.
name: Yang, Gang
name: Albert, Réka
Publisher: name: arXiv
Year: 2016
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Systems and Control (eess.SY)
subject: Physics and Society (physics.soc-ph)
subject: Molecular Networks (q-bio.MN)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Biological sciences

description: What can we learn about controlling a system solely from its underlying network structure? Here we adapt a recently developed framework for control of networks governed by a broad class of nonlinear dynamics that includes the major dynamic models of biological, technological, and social processes. This feedback-based framework provides realizable node overrides that steer a system towards any of its natural long term dynamic behaviors, regardless of the specific functional forms and system parameters. We use this framework on several real networks, identify the topological characteristics that underlie the predicted node overrides, and compare its predictions to those of structural controllability in control theory. Finally, we demonstrate this framework's applicability in dynamic models of gene regulatory networks and identify nodes whose override is necessary for control in the general case, but not in specific model instances.
description: Includes main text and supporting information