cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Design and Validation of Aerospace Control Systems An overview on methods  tools
Creators: name: Biannic, Jean-Marc
name: Roos, Clement
Publisher: name: ONERA
Year: 2017
Subjects: NO KEYWORDS

description: Since their early development in the 1970s with the introduction of fly-by-wire
technology, control systems have considerably evolved. Thanks to powerful
on-board computers whose capacities have undergone an exponential growth over the
past thirty years, together with the development of enhanced sensors and actuators,
the complexity of aerospace control systems is almost no longer bounded today. This
is true at least from a technological viewpoint. Control engineers should, however, keep
in mind that there are many risks in developing unnecessarily complex systems whose
validation will become a real issue. In this world, where technological constraints
have been considerably relaxed and where autonomous systems have become a
universal Holy Grail, a good balance must be found between the design and validation
phases in the development of control systems. Some complexity is inevitable during
the design phase to cope with that of the plant itself, as well as with the required level
of autonomy. However, complexity must be controlled, so that the validation phase
remains as quick and cheap as possible.
In this general context of rapidly growing complexity, the development of efficient control
design and analysis tools has become a critical issue. Here again, the exponential growth
in computing capacity has played a key role and contributed to a rapid development of
many fields in control theory. As a result, if one focuses at least on the linear control
framework and its numerous extensions (such as robust control theory, parameter-varying
control and adaptive control, to cite a few), a high level of maturity is now reached.
However, the gap between theory and practice remains to be filled. This is the main
focus of this thirteenth issue of Aerospace Lab, which is dedicated to the most
recent techniques for the design and validation of Aerospace Control Systems, with
a particular emphasis on Matlab-oriented tools and toolboxes together with realistic
applications. This issue is also strongly connected to the SMAC (Systems Modeling
Analysis  Control) toolbox developed by ONERA.
description: AerospaceLab Journal, Issue 13, December 2017; ISSN: 2107-6596
Social Anhedonia in the Daily Lives of People with Schizophrenia: Examination of Anticipated and Consummatory Pleasure
Creators: name: Abel, Danielle
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: classificationCode: 520302
subject: Clinical psychology

description: Social withdrawal is a disabling feature of schizophrenia. To understand its development, researchers have focused on social anhedonia— diminished pleasure from social interactions. Discrepancies in anticipated versus consummatory pleasure for non-social stimuli are well-documented in schizophrenia. Thus, a similar emotional paradox may underlie social anhedonia. If so, our understanding of social anhedonia—including how to treat it in schizophrenia—could be enhanced. This project used a 5-day experience sampling method (ESM) to measure discrepancies between anticipated and consummatory pleasure for real-world social activities in people with schizophrenia and healthy controls (n=30/group). Results suggest people with schizophrenia exhibited similar levels of anticipated and consummatory social pleasure as controls, and both groups were accurate in their short-term predictions of pleasure. Yet, healthy control participants were somewhat more precise in their short-term pleasure predictions, and clinical interviews revealed those with schizophrenia showed moderate deficits in long-term social pleasure prediction. Negative symptoms and cognitive impairment in schizophrenia were related to anticipated, but not consummatory, social pleasure, suggesting anhedonia is driven by deficits in thinking about pleasure, rather than inability to experience pleasure. Clinical implications include focusing on building upon short-term ability to predict pleasure in therapy in order to increase social motivation in schizophrenia. Moreover, exploratory analyses revealed differences in qualitative aspects of social activities such as level of engagement may lead to social anhedonia in schizophrenia and are a promising treatment target for addressing social dysfunction.
Spectral density constraints in quantum field theory
Creators: name: Lowdon, Peter
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Determining the structure of spectral densities is important for understanding the behaviour of any quantum field theory (QFT). However, the exact calculation of these quantities often requires a full non-perturbative description of the theory, which for physically realistic theories such as quantum chromodynamics (QCD) is currently unknown. Nevertheless, it is possible to infer indirect information about these quantities. In this paper we demonstrate an approach for constraining the form of spectral densities associated with QFT propagators, which involves matching the short distance expansion of the spectral representation with the operator product expansion (OPE) of the propagators. As an application of this procedure we analyse the scalar propagator in $ϕ^4$-theory and the quark propagator in QCD, and show that constraints are obtained on the spectral densities and the OPE condensates. In particular, it is demonstrated that the perturbative and non-perturbative contributions to the quark condensate in QCD can be decomposed, and that the non-perturbative contributions are related to the structure of the continuum component of the scalar spectral density.
description: 14 pages; v2: references and additional discussion added
Four-year stability, change, and multidirectionality of well-being in very-old age
Creators: name: Wettstein, Markus
name: Schilling, Oliver K.
name: Reidick, Ortrun
name: Wahl, Hans-Werner
Publisher: name: Humboldt-Universität zu Berlin
Year: 2023
Subjects: subject: 155 Differentielle Psychologie und Entwicklungspsychologie

description: We examined stability, change, and dedifferentiation of well-being in 124 participants with a baseline age between 87 and 97 years (M = 90.56, SD = 2.92) across 7 measurement occasions over 4 years. Measures of hedonic (life satisfaction, positive affect and negative affect) and eudaimonic well-being (autonomy, purpose in life, self-acceptance, environmental mastery), as well as indicators of mental distress (depressive symptoms, attitudes toward death and dying, disease phobia) were included. Average levels indicated high well-being at all measurement occasions in the majority of indicators analyzed. However, mean numbers of depressive symptoms were close to the cutoff point of clinical depression. Analyses of intra-individual correlations revealed high loadings of depressive symptoms, positive affect, and environmental mastery on a common factor. However, several well-being indicators were not substantially interrelated on the intra-individual level, suggesting their trajectories were rather independent of each other. Acceptance of death and dying was surprisingly high and even increased, whereas mean levels in fear of death were very low and declined over time. Overall, our findings do not suggest late-life dedifferentiation of well-being trajectories in very-old age. Our results rather support the need to consider indicators of hedonic and eudaimonic well-being, as well as mental distress, to understand the multifaceted and multidirectional dynamics of well-being in very-old age.
µSTASIS - Assessment of human microbiota stability across longitudinal samples
Creators: name: Sanchez, Pedro
Publisher: name: F1000 Research Limited
Year: 2022

description: Microbiome research is moving forward increasingly faster mainly due to the continuous implementations developed throughout the years to gain more detail in taxonomy and functional surveys. For example, this rapid advance is reflected by the diversity of cutting-edge microbiome-based therapeutics such as fecal microbiota transplantation, prebiotics or engineered symbiotic bacteria. So, along the years, microbiome data captured as a snapshot in time has uncovered the interindividual variability of human microbiota meanwhile changes in individualized microbiota emerge as predictors of clinical outcomes and disease forecast. Therefore, novel methods are needed to provide robust evaluation of longitudinal data since not only the amount of surveys based on high-dimensional sequencing data is key but also to make use of correct methodologies for their right interpretation. With the aim of assessing intrapersonally short-term to long-term changes in microbial communities, I (together with Francisco J. Santonja and Alfonso Benítez-Páez) developed µSTASIS, a multifunction R package to assess the microbiota temporal stability of individuals by means of a contextualized, intuitive and validated metric (mS), which is independent of beta diversity distance methods and correlation coefficients too. It relies on iterative partitioned clustering for stressing paired samples from multiple individuals out. Concretely, the Hartigan-Wong k-means algorithm is used as many times as possible to get the frequency in which the samples from the same individual are clustered together. Moreover, this algorithm is respectful toward compositional data analysis, hence it deals properly with data belonging to the Aitchison simplex. Firstly, µSTASIS was released at CRAN under GPL-3 licensing. Later, it was published at Briefings in Bioinformatics (bbac055) where we reported the metric fill the gap in microbiome research regarding stability in a temporal framework when treating data as compositional. Also, we demonstrated its utility by assessing the gut microbiota stability in three already-published, independent, longitudinal data sets. Besides, the whole project was selected for the first cycle of the Bioconductor New Developer Mentorship (under Dario Strbenac’s and Davide Risso’s supervision) by which I am implementing some functions, improving some theoretical aspects of the main algorithm and preparing complete documentation for the package to be soon moved from CRAN to Bioconductor.
Effects of smart manufacturing announcements on companies’ stock market value: a perspective of supply chain collaboration
Creators: name: Liu, Weihua
name: Hou, Jiahe
name: Yuan, Chaolun
name: He, Yang
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Medicine
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Cancer
subject: Science Policy

description: Due to technological complexity and capital expenditure, many companies seek supply chain collaboration to develop smart manufacturing (SCCSM) and issue SCCSM announcements. This study aims to empirically analyse the impact of SCCSM announcements on companies’ stock market value. The event study method is used to estimate the change of stock market value to 92 SCCSM announcements of Chinese listed companies. The main results are threefold. First, SCCSM announcements improve enterprises’ stock market value. Second, they, involving interconnection and constructing SM subsystems instead of an integrated SM system, have a more positive impact on stock market value. Third, SCCSM announcements issued by companies with higher degree of digital technology and higher customer concentration, have a more negative impact on stock market value. In addition, the type of resources reflected by the partners’ type has no moderating effect. This study inspires managers on how to enhance enterprises’ market stock value through SCCSM activities.
Radio jet emission from GeV-emitting narrow-line Seyfert 1 galaxies
Creators: name: Angelakis, E.
name: Fuhrmann, L.
name: Marchili, N.
name: Foschini, L.
name: Myserlis, I.
name: Karamanavis, V.
name: Komossa, S.
name: Blinov, D.
name: Krichbaum, T. P.
name: Sievers, A.
name: Ungerechts, H.
name: Zensus, J. A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We studied the radio emission from four radio-loud and gamma-ray-loud narrow-line Seyfert 1 galaxies. The goal was to investigate whether a relativistic jet is operating at the source, and quantify its characteristics. We relied on the most systematic monitoring of such system in the cm and mm radio bands which is conducted with the Effelsberg 100 m and IRAM 30 m telescopes and covers the longest time-baselines and the most radio frequencies to date. We extract variability parameters and compute variability brightness temperatures and Doppler factors. The jet powers were computed from the light curves to estimate the energy output. The dynamics of radio spectral energy distributions were examined to understand the mechanism causing the variability. All the sources display intensive variability that occurs at a pace faster than what is commonly seen in blazars. The flaring events show intensive spectral evolution indicative of shock evolution. The brightness temperatures and Doppler factors are moderate, implying a mildly relativistic jet. The computed jet powers show very energetic flows. The radio polarisation in one case clearly implies a quiescent jet underlying the recursive flaring activity. Despite the generally lower flux densities, the sources appear to show all typical characteristics seen in blazars that are powered by relativistic jets.
description: Accepted for publication in 4 - Extragalactic astronomy of Astronomy and Astrophysics
title: The H  Control Problem is Solved
Creators: name: Apkarian, Pierre
name: Noll, Dominikus
Publisher: name: ONERA
Year: 2017
Subjects: H-INFINITY SYNTHESIS
STRUCTURED CONTROL
ROBUST CONTROL
NON-SMOOTH OPTIMIZATION

description: The H control problem was posed by G. Zames in 1981 [1], and various attempts
to address it had been made over the years. Ultimately, in 2006, the authors
presented their solution, which is based on a tailored non-smooth optimization
technique [2]. In this treatise we present the rationale of H control, give a brief
history, and recall the milestones reached before our 2006 solution. We clarify why our
novel approach is welcomed in the high-tech and aerospace industry. Recent MATLAB
functions, hinfstruct and systune, based on work by Apkarian, Noll and
Gahinet (The MathWorks) are available in the Robust Control Toolbox, since R2010b
and R2012b respectively.
description: AerospaceLab Journal, Issue 13, December 2017; ISSN: 2107-6596
Values of Ramanujan's Continued Fractions Arising as Periodic Points of Algebraic Functions
Creators: name: Akkarapakam, Sushmanth Jacob
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: classificationCode: 490401
subject: Algebra and number theory

description: The main focus of this dissertation is to find and explain the periodic points of certain algebraic functions that are related to some modular functions, which themselves can be represented by continued fractions. Some of these continued fractions are first explored by Srinivasa Ramanujan in early 20th century. Later on, much work has been done in terms of studying the continued fractions, and proving several relations, identities, and giving different representations for them.
 The layout of this report is as follows. Chapter 1 has all the basic background knowledge and ingredients about algebraic number theory, class field theory, Ramanujan’s theta functions, etc. In Chapter 2, we look at the Ramanujan-Göllnitz-Gordon continued fraction that we call v(τ) and evaluate it at certain arguments in the field K = Q(√−d), with −d ≡ 1 (mod 8), in which the ideal (2) = ℘2℘′2 is a product of two prime ideals. We prove several identities related to itself and with other modular functions. Some of these are new, while some of them are known but with different proofs. These values of v(τ) are shown to generate the inertia field of ℘2 or ℘′2 in an extended ring class field over the field K. The conjugates over Q of these same values, together with 0, −1 ± √2, are shown to form the exact set of periodic points of a fixed algebraic function ˆF(x), independent of d. These are analogues of similar results for the Rogers-Ramanujan continued fraction. See [1] and [2]. This joint work with my advisor Dr. Morton, is submitted for publication to the New York Journal.
 In Chapters 3 and 4, we take a similar approach in studying two more continued fractions c(τ) and u(τ), the first of which is more commonly known as the Ramanujan’s cubic continued fraction. We show what fields a value of this continued fraction generates over Q, and we describe how the periodic points for described functions arise as values of these continued fractions. Then in the last chapter, we summarise all these results, give some possible directions for future research as well as mentioning some conjectures.
Utilização De Agregados Finos Para Reconstituição Volumétrica De Azulejos Históricos A Partir Do Reaproveitamento De Materiais Descartados
Creators: name: João Markus de Melo Pereira
name: Thais Alessandra bastos Caminha Sanjad
name: Franciléia Mendonça de Vasconcelos
Publisher: name: Zenodo
Year: 2024

description: A sustentabilidade no processo de conversação e restauração de azulejos históricos se soma a tantos desafios encontrados por pesquisadores e outros profissionais dessa área. Além disso, sabe-se que a construção civil ainda é um dos setores que mais gera resíduos, e por vezes o descarte desses materiais é realizado de maneira inapropriada. Uma vez considerado sem uso, esses resíduos podem ser transformados em recursos valiosos dentro da prática de conservação e restauro. Para isso, esse estudo tem o objetivo de encontrar potencial de utilização desses materiais no restauro de azulejos históricos. Através de um processo analítico e reflexivo, foram analisadas as implicações no uso em procedimentos restaurativos e as propriedades gerais de materiais descartados como cerâmicas, vidros, mármores e também, por ser um mineral abundante, a areia. Os resultados indicam que a areia é rica em sílica, e que demonstra bastante resistência a ataques químicos e físicos. Os materiais cerâmicos, por passarem pela queima, adquirem resistência significativa. O vidro possui uma dureza notável e é resistente a altas temperaturas, já o mármore pode melhorar a resistência e a durabilidade de argamassas. De modo geral, esses materiais podem fornecer características desejáveis no restauro de azulejos históricos, principalmente se forem utilizados como agregados finos e aliados a outros materiais que já são utilizados em práticas restaurativas. No entanto, é fundamental considerar a realização de outras analises tecnológicas para verificar compatibilidade, aderência e outros fatores que podem influenciar na utilização e durabilidade desses materiais. Com esse estudo, pretende-se contribuir para a adoção de práticas sustentáveis no processo de conservação e restauro de azulejos históricos, incentivando o reaproveitamento de resíduos e novas estratégias de preservação.
Kerr black hole in canonically deformed space-time
Creators: name: Daszkiewicz, Marcin
name: Walczyk, Cezary J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the Kerr black hole defined on canonically deformed space-time. Particulary, we find the corresponding event horizon, the ergosphere, the temperature and the entropy of such deformed object.
description: 10 pages, Latex source
title: Nonlinear Structured H
Controllers for Parameter-
Dependent Uncertain Systems with
Application to Aircraft Landing
Creators: name: Biannic, Jean-Marc
name: Roos, Clement
name: Lesprier, Jeremy
Publisher: name: ONERA
Year: 2017
Subjects: NO KEYWORDS

description: Anew design methodology inspired by dynamic inversion techniques is proposed in
this paper. It combines partially linearizing inner-loops with structured and robust
outer-loops, which are designed using a non-smooth multi-model H optimization
approach. The proposed methodology also includes a robustness analysis scheme
providing worst-case configurations, which are then used to enrich the bank of design
models and thus iteratively improve the robustness properties of the designed outerloops.
Our approach is successfully tested on a realistic nonlinear aircraft control
problem subject to large parametric variations and uncertainties.
description: AerospaceLab Journal, Issue 13, December 2017; ISSN: 2107-6596
Discriminant Formulas and Applications
Creators: name: Chan, Kenneth
name: Young, Alexander
name: Zhang, James
Publisher: name: arXiv
Year: 2015
Subjects: subject: Rings and Algebras (math.RA)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 16W20, 16W55

description: We solve two conjectures of Ceken-Palmieri-Wang-Zhang concerning discriminants and give some applications.
description: 33 pages. Edit: In version 2, we removed the hypothesis that 1-q is invertible in Theorem 0.1
VR-BASED TESTING BED FOR PEDESTRIAN BEHAVIOR PREDICTION ALGORITHMS
Creators: name: Armin, Faria
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: classificationCode: 460806
subject: Human-computer interaction
classificationCode: 460708
subject: Virtual and mixed reality
classificationCode: 400703
subject: Autonomous vehicle systems
classificationCode: 360502
subject: Computer gaming and animation

description: Upon introducing semi- and fully automated vehicles on the road, drivers will be reluctant to focus on the traffic interaction and rely on the vehicles' decision-making. However, encountering pedestrians still poses a significant difficulty for modern automated driving technologies. Considering the high-level complexity in human behavior modeling to solve a real-world problem, deep-learning algorithms trained from naturalistic data have become promising solutions. Nevertheless, although developing such algorithms is achievable based on scene data collection and driver knowledge extraction, evaluation remains challenging due to the potential crash risks and limitations in acquiring ground-truth intention changes.
 This study proposes a VR-based testing bed to evaluate real-time pedestrian intention algorithms as VR simulators are recognized for their affordability and adaptability in producing a variety of traffic situations, and it is more reliable to conduct human-factor research in autonomous cars. The pedestrian wears the head-mounted headset or uses the keyboard input and makes decisions in accordance with the circumstances. The simulator has added a credible and robust experience, essential for exhibiting the real-time behavior of the pedestrian. While crossing the road, there exists uncertainty associated with pedestrian intention. Our simulator will anticipate the crossing intention with consideration of the ambiguity of the pedestrian behavior. The case study has been performed over multiple subjects in several crossing conditions based on day-to-day life activities. It can be inferred from the study outcomes that the pedestrian intention can be precisely inferred using this VR-based simulator. However, depending on the speed of the car and the distance between the vehicle and the pedestrian, the accuracy of the prediction can differ considerably in some cases.
Utilização De Agregados Finos Para Reconstituição Volumétrica De Azulejos Históricos A Partir Do Reaproveitamento De Materiais Descartados
Creators: name: João Markus de Melo Pereira
name: Thais Alessandra Bastos Caminha Sanjad
name: Franciléia Mendonça de Vasconcelos
Publisher: name: Zenodo
Year: 2024

description: A sustentabilidade no processo de conversação e restauração de azulejos históricos se soma a tantos desafios encontrados por pesquisadores e outros profissionais dessa área. Além disso, sabe-se que a construção civil ainda é um dos setores que mais gera resíduos, e por vezes o descarte desses materiais é realizado de maneira inapropriada. Uma vez considerado sem uso, esses resíduos podem ser transformados em recursos valiosos dentro da prática de conservação e restauro. Para isso, esse estudo tem o objetivo de encontrar potencial de utilização desses materiais no restauro de azulejos históricos. Através de um processo analítico e reflexivo, foram analisadas as implicações no uso em procedimentos restaurativos e as propriedades gerais de materiais descartados como cerâmicas, vidros, mármores e também, por ser um mineral abundante, a areia. Os resultados indicam que a areia é rica em sílica, e que demonstra bastante resistência a ataques químicos e físicos. Os materiais cerâmicos, por passarem pela queima, adquirem resistência significativa. O vidro possui uma dureza notável e é resistente a altas temperaturas, já o mármore pode melhorar a resistência e a durabilidade de argamassas. De modo geral, esses materiais podem fornecer características desejáveis no restauro de azulejos históricos, principalmente se forem utilizados como agregados finos e aliados a outros materiais que já são utilizados em práticas restaurativas. No entanto, é fundamental considerar a realização de outras analises tecnológicas para verificar compatibilidade, aderência e outros fatores que podem influenciar na utilização e durabilidade desses materiais. Com esse estudo, pretende-se contribuir para a adoção de práticas sustentáveis no processo de conservação e restauro de azulejos históricos, incentivando o reaproveitamento de resíduos e novas estratégias de preservação.
Competition of Commodities for the Status of Money in an Agent-based Model
Creators: name: Gębarowski, Robert
name: Drożdż, Stanisław
name: Górski, Andrzej Z.
name: Oświęcimka, Paweł
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Finance (q-fin.ST)
subject: FOS: Economics and business

description: In this model study of the commodity market, we present some evidence of competition of commodities for the status of money in the regime of parameters, where emergence of money is possible. The competition reveals itself as a rivalry of a few (typically two) dominant commodities, which take the status of money in turn.
description: 10 pages, 4 figures
SHORT RANGE PROBES TO EXTENSIONS OF THE STANDARD MODEL
Creators: name: Bsaibes, Thomas
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: classificationCode: 510899
subject: Quantum physics not elsewhere classified
classificationCode: 510799
subject: Particle and high energy physics not elsewhere classified
classificationCode: 510399
subject: Classical physics not elsewhere classified

description: As successful as the Standard Model has been in describing particle interactions, there are still many open questions it does not answer; the strong CP violation and the existence of dark matter among them. To address these issues many extensions to the Standard Model have been devised. Some of these extensions propose a new force mediating particle; a massive particle results in a potential described by a Yukawa-like interaction, while a massless exchange particle leads to power law type potentials. Limits on the strength of these interactions at the sub-micron range of separation between two particles are poorly characterized, but previous experiments conducted at IUPUI placed the best limits to date on the strength of a Yukawa-like interaction. Those experiments used a spherical test mass and a planar source mass. However, if a cylindrical test mass was used, the increased interaction volume of the cylinder would result in an increased sensitivity of about an order of magnitude over the spherical test mass experiment. Building such a system presents many challenges, namely the alignment of the cylinder with respect to the planar source mass. A capacitance based scheme to determine the alignment of a cylinder with respect to a plane will be discussed. The thesis concludes with an outline for a new type of measurement system. The new experiment attempts to induce a gravitational Π-pulse in a nanoshphere to probe extensions to the Standard Model.
The Multilayer Temporal Network of Public Transport in Great Britain
Creators: name: Gallotti, Riccardo
name: Barthelemy, Marc
Publisher: name: arXiv
Year: 2015
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Despite the widespread availability of information concerning Public Transport from different sources, it is extremely hard to have a complete picture, in particular at a national scale. Here, we integrate timetable data obtained from the United Kingdom open-data program together with timetables of domestic flights, and obtain a comprehensive snapshot of the temporal characteristics of the whole UK public transport system for a week in October 2010. In order to focus on the multi-modal aspects of the system, we use a coarse graining procedure and define explicitly the coupling between different transport modes such as connections at airports, ferry docks, rail, metro, coach and bus stations. The resulting weighted, directed, temporal and multilayer network is provided in simple, commonly used formats, ensuring easy accessibility and the possibility of a straightforward use of old or specifically developed methods on this new and extensive dataset.
description: 18 pages, 10 figures
Utilização de agregados finos para reconstituição volumétrica de azulejos históricos a partir do reaproveitamento de materiais descartados
Creators: name: de Melo Pereira, João Markus
name: Bastos Caminha Sanjad, Thais Alessandra
name: Mendonça de Vasconcelos, Franciléia
Publisher: name: Zenodo
Year: 2024

description: A sustentabilidade no processo de conversação e restauração de azulejos históricos se soma a tantos desafios encontrados por pesquisadores e outros profissionais dessa área. Além disso, sabe-se que a construção civil ainda é um dos setores que mais gera resíduos, e por vezes o descarte desses materiais é realizado de maneira inapropriada. Uma vez considerado sem uso, esses resíduos podem ser transformados em recursos valiosos dentro da prática de conservação e restauro. Para isso, esse estudo tem o objetivo de encontrar potencial de utilização desses materiais no restauro de azulejos históricos. Através de um processo analítico e reflexivo, foram analisadas as implicações no uso em procedimentos restaurativos e as propriedades gerais de materiais descartados como cerâmicas, vidros, mármores e também, por ser um mineral abundante, a areia. Os resultados indicam que a areia é rica em sílica, e que demonstra bastante resistência a ataques químicos e físicos. Os materiais cerâmicos, por passarem pela queima, adquirem resistência significativa. O vidro possui uma dureza notável e é resistente a altas temperaturas, já o mármore pode melhorar a resistência e a durabilidade de argamassas. De modo geral, esses materiais podem fornecer características desejáveis no restauro de azulejos históricos, principalmente se forem utilizados como agregados finos e aliados a outros materiais que já são utilizados em práticas restaurativas. No entanto, é fundamental considerar a realização de outras analises tecnológicas para verificar compatibilidade, aderência e outros fatores que podem influenciar na utilização e durabilidade desses materiais. Com esse estudo, pretende-se contribuir para a adoção de práticas sustentáveis no processo de conservação e restauro de azulejos históricos, incentivando o reaproveitamento de resíduos e novas estratégias de preservação.
title: Randomized and Robust Methods
for Uncertain Systems using
R-RoMulOC, with Applications to
DEMETER Satellite Benchmark
Creators: name: Chamanbaz, Mohammadreza
name: Dabbene, Fabrizio
name: Peaucelle, Dimitri
name: Pittet, Christelle
Publisher: name: ONERA
Year: 2017
Subjects: NO KEYWORDS

description: R-RoMulOC is a freely distributed toolbox aimed at making easily available to the users various optimization-based methods for dealing with uncertain systems.
It implements both deterministic LMI-based results, which provide guaranteed performance for all values of the uncertainties, and probabilistic randomization-based
approaches, which guarantee performance for all values of the uncertainties except for a subset with arbitrary small probability measure. The paper is devoted
to the description of these two approaches for analysis and control design when applied to a satellite benchmark proposed by the CNES, the French Space Agency.
The paper also describes the modeling of the DEMETER satellite and its integration into the R-RoMulOC toolbox as a challenging test example. Design of state-feedback
controllers and closed-loop performance analysis are carried out with the randomized and robust methods available in the R-RoMulOC toolbox.
description: AerospaceLab Journal, Issue 13, December 2017; ISSN: 2107-6596
title: Stability Analysis by a New
Algorithmic Approach Based on
Integral Quadratic Constraints :
Application to an Aircraft Benchmark
Creators: name: Demourant, Fabrice
Publisher: name: ONERA
Year: 2017
Subjects: IQC
KYP LEMMA
FDI
LMI
STABILITY ANALYSIS

description: To analyze a non-linear, uncertain and time-varying closed loop representing a
fighter aircraft model interconnected with a control law, an Integral Quadratic
Constraint (IQC) approach has been used. This approach is particularly interesting
for two reasons. The first one is that it is possible with the same stability criterion
to analyze a large class of stability problems. The second reason is that the stability
criterion is based on frequency dependent inequalities (FDI). Usually, the Kalman-
Yakubovich-Popov (KYP) lemma is used, in order to transform this infinite set of
inequalities into one linear matrix inequality (LMI). However, this kind of approach leads
to a steep increase in the number of optimization variables. Consequently, a new FDIbased
algorithmic approach has been developed. Usually, the number of FDI that must
be satisfied is infinite or, thanks to a frequency domain gridding, it is possible to avoid
this problem but with the drawback of not being able to guarantee the validity of the
solution throughout the frequency domain continuum. To tackle this problem, a specific
technique has been developed. It consists in computing a frequency domain where the
solution is valid. By an iterative approach, this domain is extended to cover [0,+[.
Thus, the solution obtained from the FDI is necessarily valid throughout the frequency
domain continuum and the number of optimization variables remains limited, which
makes the IQC approach tractable for high-order models.
description: AerospaceLab Journal, Issue 13, December 2017; ISSN: 2107-6596
van Keken & Wilson: An introductory review of the thermal structure of subduction zones: III. Comparison between models and observations
Creators: name: van Keken, Peter
name: Wilson, Cian
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 370604
subject: Geodynamics

description: This is part III of a trio of review papers discussing the finite element modeling of the thermal structure of subduction zones. This PDF is a preprint of the revised version submitted to Progress in Earth and Planetary Sciences.Abstract:The thermal structure of subduction zones is fundamental to our understanding of the physical and chemical processes that occur at active convergent plate margins. These include magma generation and related arc volcanism, shallow and deep seismicity, and metamorphic reactions that can release fluids. Computational models can predict the thermal structure to great numerical precision when models are fully described but this does not guarantee accuracy or applicability. In a trio of companion papers the construction of thermal subduction zone models, their use in subduction zone studies, and their link to geophysical and geochemical observations are explored. In this last part we discuss how independent finite element approaches predict the thermal structure of the global subduction system and investigate how well these predictions correspond to geophysical, geochemical, and petrological observations.
Observations of Giant Pulses from Pulsar PSR B0950+08 using LWA1
Creators: name: Tsai, Jr-Wei
name: Simonetti, John H.
name: Akukwe, Bernadine
name: Bear, Brandon
name: Cutchin, Sean E.
name: Dowell, Jayce
name: Gough, Jonathan D.
name: Kanner, Jonah
name: Kassim, Namir E.
name: Schinzel, Frank K.
name: Shawhan, Peter
name: Taylor, Gregory B.
name: Yancey, Cregg C.
name: Quezada, Leandro
name: Kavic, Michael
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report the detection of giant pulse emission from PSR B0950+08 in 24 hours of observations made at 39.4 MHz, with a bandwidth of 16 MHz, using the first station of the Long Wavelength Array, LWA1. We detected 119 giant pulses from PSR B0950+08 (at its dispersion measure), which we define as having SNRs at least 10 times larger than for the mean pulse in our data set. These 119 pulses are 0.035% of the total number of pulse periods in the 24 hours of observations. The rate of giant pulses is about 5.0 per hour. The cumulative distribution of pulse strength $S$ is a steep power law, $N(>S)\propto S^{-4.7}$, but much less steep than would be expected if we were observing the tail of a Gaussian distribution of normal pulses. We detected no other transient pulses in a dispersion measure range from 1 to 90 pc cm$^{-3}$, in the beam tracking PSR B0950+08. The giant pulses have a narrower temporal width than the mean pulse (17.8 ms, on average, vs. 30.5 ms). The pulse widths are consistent with a previously observed weak dependence on observing frequency, which may be indicative of a deviation from a Kolmogorov spectrum of electron density irregularities along the line of sight. The rate and strength of these giant pulses is less than has been observed at $\sim$100 MHz. Additionally, the mean (normal) pulse flux density we observed is less than at $\sim$100 MHz. These results suggest this pulsar is weaker and produces less frequent giant pulses at 39 MHz than at 100 MHz.
description: 27 pages, 12 figures, typos corrected
Utilização de agregados finos para reconstituição volumétrica de azulejos históricos a partir do reaproveitamento de materiais descartados
Creators: name: João Markus de Melo Pereira
name: Thais Alessandra bastos Caminha Sanjad
name: Franciléia Mendonça de Vasconcelos
Publisher: name: Zenodo
Year: 2024

description: A sustentabilidade no processo de conversação e restauração de azulejos históricos se soma a tantos desafios encontrados por pesquisadores e outros profissionais dessa área. Além disso, sabe-se que a construção civil ainda é um dos setores que mais gera resíduos, e por vezes o descarte desses materiais é realizado de maneira inapropriada. Uma vez considerado sem uso, esses resíduos podem ser transformados em recursos valiosos dentro da prática de conservação e restauro. Para isso, esse estudo tem o objetivo de encontrar potencial de utilização desses materiais no restauro de azulejos históricos. Através de um processo analítico e reflexivo, foram analisadas as implicações no uso em procedimentos restaurativos e as propriedades gerais de materiais descartados como cerâmicas, vidros, mármores e também, por ser um mineral abundante, a areia. Os resultados indicam que a areia é rica em sílica, e que demonstra bastante resistência a ataques químicos e físicos. Os materiais cerâmicos, por passarem pela queima, adquirem resistência significativa. O vidro possui uma dureza notável e é resistente a altas temperaturas, já o mármore pode melhorar a resistência e a durabilidade de argamassas. De modo geral, esses materiais podem fornecer características desejáveis no restauro de azulejos históricos, principalmente se forem utilizados como agregados finos e aliados a outros materiais que já são utilizados em práticas restaurativas. No entanto, é fundamental considerar a realização de outras analises tecnológicas para verificar compatibilidade, aderência e outros fatores que podem influenciar na utilização e durabilidade desses materiais. Com esse estudo, pretende-se contribuir para a adoção de práticas sustentáveis no processo de conservação e restauro de azulejos históricos, incentivando o reaproveitamento de resíduos e novas estratégias de preservação.
The natural parametrization of cosmic neutrino oscillations
Creators: name: Palladino, Andrea
name: Vissani, Francesco
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The natural parameterization of vacuum oscillations in three neutrino flavors is studied. Compact and exact relations of its three parameters with the ordinary three mixing angles and CP violating phase are obtained. Its usefulness is illustrated by considering various applications: the study of the flavor ratio and of its uncertainties, the comparison of expectations and observations in the flavor triangle, the intensity of the signal due to Glashow resonance. The results in the literature are easily reproduced and in particular the recently obtained agreement of the observations of IceCube with the hypothesis of cosmic neutrino oscillations is confirmed. It is argued that a Gaussian treatment of the errors appropriately describes the effects of the uncertainties on neutrino oscillation parameters.
description: 19 pages, 5 figures. Text and bibliography enhanced, results unchanged. New analysis on flavor triangle included. Accepted for publication in EPJC
A new class of two-layer Green-Naghdi systems with improved frequency dispersion
Creators: name: Duchêne, Vincent
name: Israwi, Samer
name: Talhouk, Raafat
Publisher: name: arXiv
Year: 2015
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We introduce a new class of Green-Naghdi type models for the propagation of internal waves between two (1+1)-dimensional layers of homogeneous, immiscible, ideal, incompressible, irrotational fluids, vertically delimited by a flat bottom and a rigid lid. These models are tailored to improve the frequency dispersion of the original bi-layer Green-Naghdi model, and in particular to manage high-frequency Kelvin-Helmholtz instabilities, while maintaining its precision in the sense of consistency. Our models preserve the Hamiltonian structure, symmetry groups and conserved quantities of the original model. We provide a rigorous justification of a class of our models thanks to consistency, well-posedness and stability results. These results apply in particular to the original Green-Naghdi model as well as to the Saint-Venant (hydrostatic shallow-water) system with surface tension.
description: to appear in Stud. Appl. Math
Daily Experiences of Racial Microaggressions and Health Outcomes Among Black Adolescents: A Daily Diary Study
Creators: name: Clifton, Richelle
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: classificationCode: 520302
subject: Clinical psychology

description: Racial microaggressions are associated with multiple negative health outcomes, including increased distress, anxiety (Blume et al., 2012; Schoulte et al., 2011), and substance use (Su et al., 2019). The negative effects of racial microaggressions have been observed through daily assessments (Burrow & Ong, 2010; Ong et al., 2009; Swim et al., 2003). However, these studies have been conducted almost exclusively among Black adults. Thus, the first aim of the current study is to examine the impact of daily experiences of racial microaggressions on health outcomes among Black adolescents. Further, it is also important to examine factors that might influence the relationship between racial microaggressions and health outcomes. One factor that has received a considerable amount of attention is racial identity, with more recent studies examining the impact of racial identity profiles. Thus, the second aim of the current study was to explore variability in these risk pathways based on racial identity profiles. Participants were Black adolescents (N = 48; 79.2% girls; Mage=17.13). Respondents completed measures of racial identity at baseline and daily diary measures of racial microaggressions, depression, anxiety, aggression, and substance use for 14 days. Participants reported an average of 5.56 experiences of racial microaggressions per day. Neither concurrent or lagged-day associations between racial microaggressions and symptoms of depression or symptoms of anxiety were significant. Concurrent analyses indicated that the between-person effect of racial microaggressions on aggression was significant (estimate=0.345, SE=0.138, t=2.495, p=0.016), and that effect was still evident one day later (estimate=0.107, SE=0.040, t=2.686, p=0.007). The concurrent, within-person effect of racial microaggressions on cannabis use was also significant (OR=1.524, 95%CI[0.103, 0.740], p=0.010). Four racial identity profiles were identified (labeled race- focused, undifferentiated, integrationist, and multiculturalist) and a number of effects were significant within profiles. This study further highlighted that Black youth are experiencing an overwhelming number of racial microaggressions on a daily basis. Additionally, this project represents a crucial step in advancing our understanding of how racial microaggressions operate to influence health outcomes among Black adolescents on the daily level and highlights several areas for needed study and intervention.
Impacts of large-scale climatic disturbances on the terrestrial carbon cycle
Creators: name: Erbrecht, Tim
name: Lucht, Wolfgang
Publisher: name: London : BioMed Central
Year: 2006
Subjects: subject: Soil Respiration
subject: Precipitation Anomaly
subject: Heterotrophic Respiration
subject: Soil Organic Matter Decomposition
subject: Terrestrial Biosphere
subject: 550

description: Background: The amount of carbon dioxide in the atmosphere steadily increases as a consequence of anthropogenic emissions but with large interannual variability caused by the terrestrial biosphere. These variations in the CO2 growth rate are caused by large-scale climate anomalies but the relative contributions of vegetation growth and soil decomposition is uncertain. We use a biogeochemical model of the terrestrial biosphere to differentiate the effects of temperature and precipitation on net primary production (NPP) and heterotrophic respiration (Rh) during the two largest anomalies in atmospheric CO2 increase during the last 25 years. One of these, the smallest atmospheric year-to-year increase (largest land carbon uptake) in that period, was caused by global cooling in 1992/93 after the Pinatubo volcanic eruption. The other, the largest atmospheric increase on record (largest land carbon release), was caused by the strong El Niño event of 1997/98. Results: We find that the LPJ model correctly simulates the magnitude of terrestrial modulation of atmospheric carbon anomalies for these two extreme disturbances. The response of soil respiration to changes in temperature and precipitation explains most of the modelled anomalous CO2 flux. Conclusion: Observed and modelled NEE anomalies are in good agreement, therefore we suggest that the temporal variability of heterotrophic respiration produced by our model is reasonably realistic. We therefore conclude that during the last 25 years the two largest disturbances of the global carbon cycle were strongly controlled by soil processes rather then the response of vegetation to these large-scale climatic events.