cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Converting separable conditions to entanglement breaking conditions
Creators: name: Namiki, Ryo
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a general method to derive entanglement breaking (EB) conditions for continuous-variable quantum gates. We start with an arbitrary entanglement witness, and reach an EB condition. The resultant EB condition is applicable not only for quantum channels but also for general quantum operations, namely, trace-non-increasing class of completely positive maps. We illustrate our method associated with a quantum benchmark based on the input ensemble of Gaussian distributed coherent states. We also exploit our idea for channels acting on finite dimensional systems and present a Schmidt-number benchmark based on input states of two mutually unbiased bases and measurements of generalized Pauli operators.
description: 4 pages
Structural assessment of a beam-columns structure – identification of close vicinity
Creators: name: Plassiard, Jean-Patrick
name: MOLON, Andreia
name: SAIDI, Mohamed
name: PLE, Olivier
name: RODRIGUEZ, William
Publisher: name: Academic Journal of Civil Engineering
Year: 2022

description: In the context of sustainability, the durability of the refurbished buildings involves structural retrofitting also. But the assessment methods for evaluating the actual state of such structures are still in progress. For instance, vibrational methods use to define the structural state of a beams-columns structure, conflict with the interaction with vicinity effects. The present paper proposes to define the close vicinity of a structural element, in which most of the effect is gathered. Here, the study was undertaken on a small scale structure made of a single beam – several columns structure. An experimental sample, as well as the numerical model of such a structure, was undertaken. The numerical results indicated that the close vicinity reduces to the two adjacent spans on each side of the considered one. Beginning from one corner of the beam, the actual state of the structure can be totally identified from one span to the next. The experiment results are in good agreement with the numerical results, thuswise this method should be applicable to a damaged structure also.
description: Academic Journal of Civil Engineering, Vol 40 No 1 (2022): Special Issue - RUGC 2022
Robust linear static anti-windup with probabilistic certificates
Creators: name: Formentin, Simone
name: Dabbene, Fabrizio
name: Tempo, Roberto
name: Zaccarian, Luca
name: Savaresi, Sergio M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: In this paper, we address robust static anti-windup compensator design and performance analysis for saturated linear closed loops in the presence of nonlinear probabilistic parameter uncertainties via randomized techniques. The proposed static anti-windup analysis and robust performance synthesis correspond to several optimization goals, ranging from minimization of the nonlinear input/output gain to maximization of the stability region or maximization of the domain of attraction. We also introduce a novel paradigm accounting for uncertainties in the energy of the disturbance inputs. Due to the special structure of linear static anti-windup design, wherein the design variables are decoupled from the Lyapunov certificates, we introduce a significant extension, called scenario with certificates (SwC), of the so-called scenario approach for uncertain optimization problems. This extension is of independent interest for similar robust synthesis problems involving parameter-dependent Lyapunov functions. We demonstrate that the scenario with certificates robust design formulation is appealing because it provides a way to implicitly design the parameter-dependent Lyapunov functions and to remove restrictive assumptions about convexity with respect to the uncertain parameters. Subsequently, to reduce the computational cost, we present a sequential randomized algorithm for iteratively solving this problem. The obtained results are illustrated by numerical examples.
description: 13 pages, 7 figures, Accepted for publication as a Regular Paper on the IEEE Transactions on Automatic Control
THE EFFECT OF BLOOD POOLING IN THE LOWER LIMBS DURING PROLONGED SITTING ON CEREBRAL ARTERIAL STIFFENING: TWO RANDOMIZED CROSS-OVER TRIALS
Creators: name: Pomeroy, Alexander
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2021

description: Prolonged sitting (PS) can induce arterial stiffening, which is a precursor of atherosclerosis of the cerebral arteries. Heart-Middle Cerebral Artery pulse wave velocity (hmPWV) was assessed in eleven participants were examined over two randomized cross-over trials (SIT: n = 5, 23.6 [5.3] y, 40% F, 23.1 [3.2] kg/m2; LAY: n = 6, 26.5 [7.6] y, 66.7% F, 22.5 [2.3]). Participants underwent two conditions on two separate visits in each trial: Cuff, where bilateral occlusive cuffs were applied to the legs and Non-Cuff, a control condition. In the Cuff and Non-Cuff conditions in each trial, hmPWV decreased over time. In the SIT trial, the random effects model generated a large time effect (ß = -97.17, 95% CI: -125.1 to -69.28, ES = 1.55). Regardless of posture, venous pooling was not associated with hmPWV.
Valorisation de gypse recyclé dans la formulation de ciments sursulfatés
Creators: name: Gaudrel, Damien
name: Phelipot-Mardele, Annabelle
name: Lanos, Christophe
Publisher: name: Academic Journal of Civil Engineering
Year: 2022

description: Parmi les grands enjeux environnementaux, la production de liants cimentaires limitant l’émission de CO2 est un sujet d’actualité. Cette étude s’intéresse à la valorisation de gypse recyclé provenant d’un centre de tri de déchets du BTP dans la formulation d’un ciment sursulfaté (CSS). Les formulations envisagées correspondent au couplage d’un laitier, de gypse recyclé et de ciment Portland jouant ici le rôle de source de clinker. Différentes formulations de liants correspondant à des dosages en laitier constant, en ciment constant ou à des ratios ciment/gypse et enfin ciment/laitier constants sont envisagées. Les liants CSS ainsi formulés ont été caractérisés en compression sur mortiers à 2, 7, 28 et 60 jours selon la norme EN-196. Les résultats montrent la pertinence de l’utilisation d’un gypse recyclé dans la confection d’un CSS et la sensibilité au dosage des activateurs de celui-ci, soit le gypse et le clinker.
description: Academic Journal of Civil Engineering, Vol 40 No 1 (2022): Special Issue - RUGC 2022
Renyi Entropies, the Analytic Bootstrap, and 3D Quantum Gravity at Higher Genus
Creators: name: Headrick, Matthew
name: Maloney, Alexander
name: Perlmutter, Eric
name: Zadeh, Ida G.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute the contribution of the vacuum Virasoro representation to the genus-two partition function of an arbitrary CFT with central charge $c>1$. This is the perturbative pure gravity partition function in three dimensions. We employ a sewing construction, in which the partition function is expressed as a sum of sphere four-point functions of Virasoro vacuum descendants. For this purpose, we develop techniques to efficiently compute correlation functions of holomorphic operators, which by crossing symmetry are determined exactly by a finite number of OPE coefficients; this is an analytic implementation of the conformal bootstrap. Expanding the results in $1/c$, corresponding to the semiclassical bulk gravity expansion, we find that---unlike at genus one---the result does not truncate at finite loop order. Our results also allow us to extend earlier work on multiple-interval Renyi entropies and on the partition function in the separating degeneration limit.
description: 63 pages + refs
Effet du sable de rivière sur le comportement à haute température du béton de gneiss
Creators: name: TIEGOUM WEMBE, Japhet
Publisher: name: Academic Journal of Civil Engineering
Year: 2022

description: L’objectif de ce travail est d’analyser le comportement à haute température de béton contenant uniquement des granulats de gneiss (BSGG) et de béton obtenu en remplaçant le sable de gneiss par du sable de rivière de Sanaga (BSGS). Les éprouvettes issues de ces compositions de béton ont été soumises à différents cycles de chauffage-refroidissement de 150°C, 300°C, 450°C et 600°C. La vitesse de chauffage est de 1°C/minute. La résistance à la compression et la porosité des bétons sont déterminées à la température ambiante et après les différents cycles de chauffage-refroidissement. Les premiers résultats montrent que les deux bétons présentent des propriétés similaires à la température ambiante. Pour le béton de sable de rivière, il est remarqué une baisse de la résistance à la compression en fonction de la température. Par contre, pour le béton contenant uniquement le sable de gneiss, une légère augmentation de la résistance à la compression résiduelle pour les températures de 150°C et 300°C est constatée. Le sable de rivière présente un effet moins significatif sur le comportement du béton de gneiss à haute température.
description: Academic Journal of Civil Engineering, Vol 40 No 1 (2022): Special Issue - RUGC 2022
The Hau of Kai Hau Kai
Creators: name: Payne, Dione
Publisher: name: Mahika Kai Journal
Year: 2020

description: Kai hau kai is a practice of reciprocal obligation which can be misunderstood and seen as a primitive or archaic form of familial exchange. In reality kai hau kai is more fluid and organic and is a continuing embedded form of economic, political and social cohesiveness that is practiced today and involves the ability for rich geographical resources, narratives and practice to be shared inter-regionally. In many cases, kai hau kai is often relegated to primitive bartering systems. This article explores kai hau kai practice and the reciprocal responsibilities that are foundational to intergenerational knowledge transfer of mahika kai practices.
description: Mahika Kai Journal, Vol 1 No 1 (2020): Special Issue: Proceedings of the Mahika Kai Conference 2019
Progetto incompiuto. In risposta a 11 domande su Olivetti
Creators: name: Mazzoleni, Chiara
Publisher: name: La Rivista di Engramma
Year: 2019
Subjects: Olivetti
Experiment
Capitalism
IRUR

description: Chiara Mazzoleni reconstructs the context, steps and sense of what she calls Olivetti’s “unfinished project” Not a utopia, but a humanist political project for the development of the “person” as described by Mounier. The project developed politically along the “third path” of the liberal-socialism of Calogero and Capitini, that of the Movimento di Comunità (Community Movement) through the Centri di Orientamento Sociale (Social Orientation Centers) and the Centri di Comunità (Community Centers). The latter, both experiments in new politics, were conceived as democratic cells for training and the free expression of public opinion: they accompanied the ‘Community’ intended as an environment for “the formation and development of cooperative action, solidarity, and the ethics of individual responsibility” among the working classes and the other agents in the project to transform business. The fact that this project was never realized finds its causes not only in Olivetti’s premature death, but also in the hostility of Italian capitalism on one hand, and that of leftist parties and trade unions on the other. It is also the result of the incapacity of IRUR structures to emancipate themselves from the economic dependence and hegemony set in place by Olivetti.
“LOG ON IN, THERE’S A BAND TONIGHT”: SOCIAL MEDIA AND THE OLD TIME MUSIC COMMUNITY DURING THE TIME OF COVID-19
Creators: name: Terrell, Lindsey Alyse
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2021

description: This paper maps a series of relationships concerning the old time music community on Facebook during the Coronavirus era. Through this examination, it posits that the old time music community has used Facebook during the mass virtual turn not only to maintain the community but to expand it as well, arguing that it did this by both eschewing and translating its analog roots in order to adapt to the virtual turn ushered in by the Coronavirus pandemic and subsequent shutdown.
Modular curvature and Morita equivalence
Creators: name: Lesch, Matthias
name: Moscovici, Henri
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Algebra (math.QA)
subject: Differential Geometry (math.DG)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46L87, 58B34

description: The curvature of the noncommutative torus $T^2_θ$ ($θ$ irrational) endowed with a noncommutative conformal metric has been the focus of attention of several recent works. Continuing the approach taken in the paper [A. Connes and H. Moscovici, http://arxiv.org/abs/1110.3500] we extend the study of the curvature to twisted Dirac spectral triples constructed out of Heisenberg bimodules that implement the Morita equivalence of the $C^*$-algebra $A_θ= C(T^2_θ)$ with other toric algebras $A_{θ'}$. In the enlarged context the conformal metric on $T^2_θ$ is exchanged with an arbitrary Hermitian metric on the Heisenberg $(A_θ, A_{θ'})$-bimodule $E'$ for which ${\rm End}_{A_{θ'}}(E') = A_θ$. We prove that the Ray-Singer log-determinant of the corresponding Laplacian, viewed as a functional on the space of all Hermitian metrics on $E'$, attains its extremum at the unique Hermitian metric whose corresponding connection has constant curvature. The gradient of the log-determinant functional gives rise to a noncommutative analogue of the Gaussian curvature. The genuinely new outcome of this paper is that the latter is shown to be independent of any Heisenberg bimodule $E'$ such that $A_θ= {\rm End}_{A_{θ'}}(E')$, and in this sense it is Morita invariant. To prove the above results we extend Connes' pseudodifferential calculus to Heisenberg modules. The twisted version, which offers more flexibility even in the case of trivial coefficients, could potentially be applied to other problems in the elliptic theory on noncommutative tori. A noteworthy technical feature is that we systematize the computation of the resolvent expansion for elliptic differential operators on noncommutative tori to an extent which makes the (previously employed) computer assistance unnecessary.
description: 50 pages
Influence de vitesse d’air sur la valeur tampon hygrique de matériaux de construction.
Creators: name: Khaled, Sana
name: Collet, Florence
name: Pretot, Sylvie
name: Bart, Marjorie
Publisher: name: Academic Journal of Civil Engineering
Year: 2022

description: Le transfert d'humidité dans les matériaux poreux joue un rôle essentiel dans la durabilité des constructions, ainsi que dans le confort et la santé des occupants. Une des caractéristiques hygriques en régime dynamique est la valeur tampon hygrique (Moisture Buffer Value : MBV) qui représente la capacité d'un matériau à échanger de l'humidité avec son environnement. Cette valeur est mesurée selon la méthode définie dans le projet NORDTEST qui liste différentes recommandations, dont la vitesse de l’air qui doit être égale 0,10±0,05 m/s à proximité des surfaces d’échanges à l'intérieur de la chambre d'essai, ceci correspond à une vitesse d’air représentative d’ambiance intérieure. L’objectif de ce travail est d’étudier l’influence de la vitesse d’air sur la mesure de la valeur MBV et de vérifier si cet effet est identique quelle que soit l’hygroscopicité des matériaux. Dans cette étude, des essais sont réalisés pour trois vitesses d’air sur deux matériaux : le plâtre (GY), classé régulateur d’humidité modéré et le béton de chanvre (TH), classé excellent régulateur d’humidité. Les résultats montrent qu’une vitesse d’air élevée favorise les échanges en surface et conduit à surestimer les valeurs MBV pour les matériaux hygroscopiques.
description: Academic Journal of Civil Engineering, Vol 40 No 1 (2022): Special Issue - RUGC 2022
Equilibration rates in a strongly coupled nonconformal quark-gluon plasma
Creators: name: Buchel, Alex
name: Heller, Michal P.
name: Myers, Robert C.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We initiate the study of equilibration rates of strongly coupled quark-gluon plasmas in the absence of conformal symmetry. We primarily consider a supersymmetric mass deformation within ${\cal N}=2^{*}$ gauge theory and use holography to compute quasinormal modes of a variety of scalar operators, as well as the energy-momentum tensor. In each case, the lowest quasinormal frequency, which provides an approximate upper bound on the thermalization time, is proportional to temperature, up to a pre-factor with only a mild temperature dependence. We find similar behaviour in other holographic plasmas, where the model contains an additional scale beyond the temperature. Hence, our study suggests that the thermalization time is generically set by the temperature, irrespective of any other scales, in strongly coupled gauge theories.
description: 6 pages, 7 figures
Chiral spin-orbital liquids with nodal lines
Creators: name: Natori, W. M. H.
name: Andrade, E. C.
name: Miranda, E.
name: Pereira, R. G.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Strongly correlated materials with strong spin-orbit coupling hold promise for realizing topological phases with fractionalized excitations. Here we propose a chiral spin-orbital liquid as a stable phase of a realistic model for heavy-element double perovskites. This spin liquid state has Majorana fermion excitations with a gapless spectrum characterized by nodal lines along the edges of the Brillouin zone. We show that the nodal lines are topological defects of a non-Abelian Berry connection and that the system exhibits dispersing surface states. We discuss some experimental signatures of this state and compare them with properties of the spin liquid candidate Ba_2YMoO_6.
description: 5 pages + supplementary material
Effet du stéarate de calcium et d’additions sur l’ouvrabilité et la résistance mécanique de mortiers d’acétate de cellulose
Creators: name: Salem, Thouraya
name: Tannous, Joe
name: Marceau, Sandrine
name: Omikrine-Metalssi, Othman
name: Fen-Chong, Teddy
Publisher: name: Academic Journal of Civil Engineering
Year: 2022

description: Les mégots de cigarettes sont constitués en grande partie de fibres d’acétate de cellulose (AC) dont la valorisation permettrait de réduire la pollution de l’environnement. Dans cette étude, des mortiers incorporant 1,3 % de fibres d’AC (en masse de sable) ont été fabriqués. Dans un premier temps, pour réduire l’absorption d’eau des fibres, l’effet de différents taux de stéarate de calcium (SC) (0,5 % ; 1 % et 1,5 % en masse du ciment), avec et sans superplastifiant (SP), sur l’ouvrabilité et la résistance à la compression et à la flexion a été étudié. L’impact de l’ajout de fumée de silice et de métakaolin sur ces mêmes propriétés a été étudié dans un deuxième temps. Les résultats ont montré que l’ajout d’AC dégrade l’ouvrabilité et la résistance mécanique par rapport à un mortier normalisé et que l’ajout de SC et de 3 % de SP permet d’avoir de meilleures performances. L’ajout de 10 % de métakaolin en masse du ciment en combinaison avec 3 % de SP (sans SC) permet d’obtenir les meilleures performances.
description: Academic Journal of Civil Engineering, Vol 40 No 1 (2022): Special Issue - RUGC 2022
Spatial model predicts dispersal and cell turnover cause reduced intra-tumor heterogeneity
Creators: name: Waclaw, Bartlomiej
name: Bozic, Ivana
name: Pittman, Meredith E.
name: Hruban, Ralph H.
name: Vogelstein, Bert
name: Nowak, Martin A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Tissues and Organs (q-bio.TO)
subject: FOS: Biological sciences

description: Most cancers in humans are large, measuring centimeters in diameter, composed of many billions of cells. An equivalent mass of normal cells would be highly heterogeneous as a result of the mutations that occur during each cell division. What is remarkable about cancers is their homogeneity - virtually every neoplastic cell within a large cancer contains the same core set of genetic alterations, with heterogeneity confined to mutations that have emerged after the last clonal expansions. How such clones expand within the spatially-constrained three dimensional architecture of a tumor, and come to dominate a large, pre-existing lesion, has never been explained. We here describe a model for tumor evolution that shows how short-range migration and cell turnover can account for rapid cell mixing inside the tumor. With it, we show that even a small selective advantage of a single cell within a large tumor allows the descendants of that cell to replace the precursor mass in a clinically relevant time frame. We also demonstrate that the same mechanisms can be responsible for the rapid onset of resistance to chemotherapy. Our model not only provides novel insights into spatial and temporal aspects of tumor growth but also suggests that targeting short range cellular migratory activity could have dramatic effects on tumor growth rates.
description: 37 pages, 14 figures
Utilising Mātauraka Māori knowledge and western scientific mapping technology to track vegetation changes in the Koukourarata (Port Levy) basin from c1620 to 2019.
Creators: name: Fox, Wendy
name: Payne, Matiu
Publisher: name: Mahika Kai Journal
Year: 2020

description: Mātauraka Māori held by the Kāti Huikai hapū records their migrating waka (vessel), Makawhiu, arrived in Koukourarata from the Kaikoura and Wellington regions at approximately the same time as the Mayflower touched ground at Plymouth Rock around 1620. The environment into which the Makawhiu arrived was a fully vegetated harbour basin replete with birdlife in the trees and fish in the sea. A perfect place for settlement. Koukourarata is a long bay on the northern side of Horomaka (Banks Peninsula) in Canterbury, New Zealand.[1] When European traders and whalers arrived in the 1820s, the vegetation remained largely unchanged until after the establishment of larger European settlements in and around Koukourarata in the 1850s. The fledgling New Zealand Government supported the introduction of a logging industry which oversaw large scale deforestation of Koukourarata, and across all of Horomaka. This, followed by a government policy of increasing pastoral farming, saw the almost complete conversion of the Koukourarata basin from its original vegetative state and a reduction of Horomaka’s native vegetation cover to less than 2% of its original extent (Harding, 2003). Kāti Huikai have maintained their Mātauraka Māori relating to place names which inherently recorded types of vegetation in the nomenclature. Furthermore, the retention of these names has provided the means for a more detailed vegetation map. Giving insight into a thriving community’s past; culturally, environmentally, and ecologically. This would not have been possible without Mātauraka Māori knowledge. The utilisation of GIS (geographic information system) in conjunction with Mātauraka Māori knowledge and available literature has allowed for the digital mapping of the estimated vegetation cover from around 1830, and the Kāti Huikai place names. Additionally, existing GIS data of present-day vegetation of Horomaka has been used as a comparison to the 1830s vegetation cover.
description: Mahika Kai Journal, Vol 1 No 1 (2020): Special Issue: Proceedings of the Mahika Kai Conference 2019
Knowledge and use of traditional plants by Ngunnawal and Yuin peoples of Australia
Creators: name: Heaney, Emily
name: Sutherland, Stewart
name: Bell, Tyronne
name: Moritz, Craig
Publisher: name: Mahika Kai Journal
Year: 2020

description: The study investigated the knowledge and current usage of traditional food and medicinal plants of the Ngunnawal and Yuin Elder in South Eastern, New South Wales (SE NSW) and the Australian Capital Territory (ACT) as located on the Australian National University (ANU) Aboriginal and Torres Strait Islander Heritage Trail. Insights to barriers to passing on and retaining knowledge were also identified. Elders (3 males and 4 females) were selected through systematic, non-probabilistic and snowball sampling. Ethnographic methods and techniques included informal, semi-structured interviews, participant observation and field diaries. Interviews were conducted at the ANU campus and on South Coast of NSW. Elders reported knowledge of traditional food and medicinal plants, including uses and preparation of plants. Some use of traditional plants was maintained. Multiple plants were identified on ANU Aboriginal and Torres Strait Islander Heritage Trail and had a variety of uses. Barriers to knowledge acquisition and dissemination to younger generation were reported. Challenges navigating Aboriginal and non-Aboriginal expectations of plant use and lack of young people’s engagement with traditional plant use was identified. This suggests that knowledge of traditional food and medicinal plants by the Ngunnawal and Yuin peoples is still present, but there are still significant barriers in maintaining and retaining this knowledge into the future.
description: Mahika Kai Journal, Vol 1 No 1 (2020): Special Issue: Proceedings of the Mahika Kai Conference 2019
Evaluation de la performance de digues comportant des infrastructures : méthode basée sur la formalisation des connaissances
Creators: name: Di Maiolo, Pascal
name: Curt, Corinne
name: Peyras, Laurent
name: Tourment, Remy
name: Beullac, Bruno
Publisher: name: Academic Journal of Civil Engineering
Year: 2022

description: Les infrastructures de gaz, d'eau… peuvent produire des dégradations et donc une possible atteinte à l'intégrité et à la durabilité des digues dans lesquelles elles sont présentes. Notre travail porte sur l'influence de ces réseaux sur la performance de la digue qui les contient ou les supporte. Dans un premier temps, nous avons identifié les mécanismes de dégradation des digues en remblai pouvant provenir d'une défaillance d'une infrastructure. L'étape suivante consiste à l'identification et la formalisation de 10 indicateurs d'état spécifiques qui garantissent une évaluation robuste (répétable et reproductible) comme par exemple « Interaction entre les gestionnaires de la digue et des réseaux » ou « Compactage et rappel des tranchées de pose des réseaux ». Une fois ceux-ci désignés et formalisés, ils sont agrégés puis intégrés dans les modèles d'évaluation pour évaluer la performance et la sécurité des ouvrages. Cette méthode a été testée avec succès sur plusieurs configurations de digues présentant des réseaux traversants, dans une approche de validation par jugement expert.Ces travaux ont été développés pour le mécanisme de dégradation d'érosion interne.
description: Academic Journal of Civil Engineering, Vol 40 No 1 (2022): Special Issue - RUGC 2022
title: CONSERVA Beiträge zur Erhaltung von Kunst- und Kulturgut, Nr. 1 (2023): CONSERVA Beiträge zur Erhaltung von Kunst- und Kulturgut
title: CONSERVA Beiträge zur Erhaltung von Kunst- und Kulturgut
titleType: AlternativeTitle
Creators: name: CONSERVA Beiträge Zur Erhaltung Von Kunst- Und Kulturgut
Publisher: name: CONSERVA Beiträge zur Erhaltung von Kunst- und Kulturgut
Year: 2023

description: Ein Thesaurus für Fotografie...65-68 Zwei Steinkabinetttische aus der Werkstatt von Johann Christian Neuber...57-64 Von der Aktion zur dokumentarischen Rekonstruktion...47-56 Running Up That Hill, eine Studie über die Arbeit von Medienrestaurator:innen im Archiv...39-46 Industriefotografien auf Glasplatten- und Filmnegativen im Staatsarchiv Chemnitz...30-38 Ein Experiment...17-29 Fotografien im Hochwasser...7-16 Einführung...6 Editorial...4-5 Titelei
Transmission of Traditional Food Knowledge
Creators: name: Divarkarla, Sai Pavani
name: Aroni, Rosalie
name: Sutherland, Stewart
Publisher: name: Mahika Kai Journal
Year: 2020

description: Nutritional interventions have been included in government policy to improve the health of Aboriginal and Torres Strait Islander peoples, whose social and emotional wellbeing (SEWB) is closely linked to culture. Given the connection of traditional food and food practices to culture, Country and community, promoting traditional food and food practices through community-led interventions may be a solution to improving health and nutrition interventions. However, a greater understanding of traditional knowledge transmission and acquisition is required. Currently there is a limited body of research on transmission of traditional food knowledge regarding young adults. The aim of this study was to gather the perspectives, attitudes and concerns of young adults regarding traditional food and food knowledge. This was achieved through in-depth, semi-structured interviews with young adults aged 25 to 35 living on Yuin land. Results showed that traditional food knowledge was important for identity and SEWB by facilitating connection to family, community, culture and Country. Young adults had a strong desire to gain more traditional food knowledge and to transmit this knowledge to subsequent generations. However, this was limited by disconnection from knowledge-bearers and difficulties balancing knowledge acquisition with work and home responsibilities in their mainly Western cultural context. Hence, interventions promoting traditional food knowledge amongst young adults have the potential to improve SEWB. However, as a pilot study, saturation was not reached, and larger-scale studies are required to support the results and conclusions.
description: Mahika Kai Journal, Vol 1 No 1 (2020): Special Issue: Proceedings of the Mahika Kai Conference 2019
Elektrorheologische Antriebseinheit für fluidische Applikationen
Creators: name: Garschagen, Ruben
Publisher: name: Karlsruhe
Year: 2020
Subjects: Mikrofluidik
elektrorheologisch
Ventil

description: In unserem Alltag nutzten wir an verschiedenen Stellen fluidtechnische Systeme. In der Industrie werden durch das Vermischen unterschiedlicher Flüssigkeiten und Gasen diverse Produkte hergestellt. In der Medizintechnik wird sie von der Forschung über die Diagnose bis zur Behandlung von Krankheiten eingesetzt. Auch nutzen wir die Hydraulik und Pneumatik, um Leistungen und Kräfte zu übertragen. Um einen Fluidstrom zu steuern und zu regeln, werden Ventile eingesetzt. Muss ein Fluid auf viele Leitungen geschaltet oder müssen mehrere Fluide geregelt werden, können die dazu notwendigen Ventile in einer Ventilmatrix zusammengefasst werden. Dies hat nicht nur einen geringeren Platzbedarf zur Folge, sondern reduziert auch das Volumen in den Leitungen zwischen den Ventilen. Die Flüssigkeitsmenge, welche sich in dem Volumen befindet, steht für eine weitere Nutzung nicht zur Verfügung. Daher ist dies insbesondere beim Händeln kleiner Flüssigkeitsvolumen von Vorteil. In dieser Arbeit wird ein Antriebskonzept für eine Ventilmatrix untersucht, welches auf einer elektrorheologischen Flüssigkeit basiert. Eine elektrorheologische Flüssigkeit (ERF) ist eine Dispersion, welche meistens aus einer nichtleitenden Trägerflüssigkeit und kleinen Partikeln besteht. Im elektrischen Feld polarisieren sich die Partikel und die gegenseitigen Anziehungskräfte der Partikel wirken dem Fließen der Flüssigkeit entgegen. Makroskopisch betrachtet wird dadurch die Viskosität erhöht. In dem in dieser Arbeit betrachteten ERF-Aktor wird über das Anlegen eines elektrischen Feldes durch den elektrorheologischen Effekt der Fließwiderstand in einem Kanal erhöht und die dadurch hervorgerufene Druckänderung zum Schalten eines Ventils genutzt. Somit kann die Antriebseinheit, welche die Energie für das Betätigen des Ventils bereitstellt, zum Antrieb mehrerer Ventile verwendet und von diesen räumlich getrennt aufgebaut werden. Durch das Trennen der Funktionen sind für die angesteuerten Ventile nur wenige Elemente erforderlich, was einen einfachen Aufbau derselben ermöglicht. Das Konzept ist somit speziell auf die Ansteuerung mehrerer Ventile in einer Ventilmatrix ausgerichtet. Zur Umsetzung eines solchen Aktorprinzips wurde ein Konzept für eine Ventilmatrix entwickelt. Dabei lag der Fokus auf einer einfachen Fertigung der einzelnen Ventile, die sich auch für eine Herstellung in größeren Stückzahlen eignet. Anhand einer aufgebauten Testmatrix konnte die Funktionsfähigkeit des Antriebskonzepts demonstriert werden und eine Charakterisierung des Schaltverhaltens der Matrixventile erfolgen.
Un jeu sérieux fondé sur un modèle Agent pour sensibiliser aux Solutions fondées sur la Nature pour gérer les inondations
Creators: name: Moatty, Annabelle
name: Sfiligoï Taillandier, Franck
Publisher: name: Academic Journal of Civil Engineering
Year: 2022

description: De nombreux travaux (projets, articles, etc.) ont démontré l’intérêt des Solutions fondées sur la Nature (SfN) pour réconcilier prévention et développement durable, en particulier dans un contexte de changement climatique. Cependant, leur mise en œuvre concrète soulève notamment le problème de la réception sociale et de l’appropriation de ces infrastructures par les différents acteurs. Cela induit la nécessité d’inscrire les SfN dans une vision globale, participative et intégrée de la gestion des risques. L’enjeu est donc d’accompagner les différents acteurs dans un processus d’aide à la décision. C’est là le défi que s’est fixé le projet MANA qui vise à concevoir une démarche, un modèle et un outil, permettant de sensibiliser les parties prenantes aux SfN pour gérer le risque inondation. Pour cela, nous proposons la combinaison de deux approches : la modélisation Agent et le jeu sérieux. Le projet MANA donnera lieu à des expérimentations avec différentes collectivités.
description: Academic Journal of Civil Engineering, Vol 40 No 1 (2022): Special Issue - RUGC 2022
Enhancements of Andreev conductance induced by the photon/vibron scattering
Creators: name: Baranski, J.
name: Domanski, T.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We analyze the subgap spectrum and transport properties of the quantum dot embedded between one superconducting and another metallic reservoirs and additionally coupled to an external boson mode. Emission/absorption of the bosonic quanta induces a series of the subgap Andreev states, that eventually interfere with each other. We discuss their signatures in the differential conductance both, for the linear and nonlinear regimes.
description: 6 pages
Families of periodic Jacobi-Perron algorithms for all period lengths
Creators: name: Voutier, Paul
Publisher: name: arXiv
Year: 2015
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11A55, 11R27

description: For all integers $m \geq n \geq 2$, we exhibit infinite families of purely periodic Jacobi-Perron Algorithm (JPA) expansions of dimension $n$ with period length equal to $m$ along with the associated Hasse-Bernstein units. Some observations on the units of Levesque-Rhin as well as the periodicity of the JPA expansion of $\left( m^{1/3}, m^{2/3} \right)$ are also made.
description: like published version, incorporates referee's changes as well as other improvements
WELFARE CHAUVINISM, A PRIVILEGE OF THE WEALTHY?
Creators: name: Lundén, Clara
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2021

description: This thesis looks at realistic group conflict theory to explain how socioeconomic status influences welfare chauvinism. It also introduces the concept of a cost-bearing factor, which suggests that individuals who feel like they pay disproportionally for welfare are less willing to extend welfare to immigrants, to explain why social spending may influence welfare chauvinistic attitudes. The study poses that the effect of socioeconomic status may vary depending on a country’s social spending. By using multinomial logistic regression, individual-level data from the eighth round of the European Social Survey and country-level data from OECD are used to look at the relationship between socioeconomic status and social spending as predictors for welfare chauvinism. The results indicate that while the effect of socioeconomic status is partially conditional upon low social spending, there is no proof that the effect of socioeconomic status on welfare chauvinism is conditional upon high social spending.
Nondestructive verification of continuous-variable entanglement
Creators: name: de Faria, Alencar J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: An optical procedure in the context of continuous variables to verify bipartite entanglement without destroying both systems and their entanglement is proposed. To perform the nondestructive verification of entanglement, the method relies on beam-splitter and quantum nondemolition (QND) interactions of the signal modes with two ancillary probe modes. The probe modes are measured by homodyne detections, and the obtained information is used to feed forward modulation of signal modes, concluding the procedure. Characterizing the method by figures of merit used in QND processes, we can establish the conditions for an effectively quantum scheme. Based on such conditions, it is shown that the classical information acquired from the homodyne detections of probe modes is sufficient to verify the entanglement of the output signal modes. The processing impact due to added noise on the output entanglement is assessed in the case of Gaussian modes.
description: 7 pages, 2 figures. Close to published version
Kua kā kē ngā ahi
Creators: name: Tinirau, Rawiri
name: Pauro, Cruz
name: Pauro, Connor
name: Maraku, Pera
name: Mihaka, Raiha
Publisher: name: Mahika Kai Journal
Year: 2020

description: Wānanga (traditional learning forums) focused on teaching tamariki (children) and rangatahi (youth) to hopu tuna (catch freshwater eels) has led to the consolidation of hapū (cluster of extended families, descended from an eponymous ancestor) projects and facilitation of other wānanga, that seek to share knowledge intergenerationally on tikanga (culturally and contextually appropriate practices) associated with whakapapa (genealogical connections), kai (food) gathering, and environmental restoration. Te Morehu Whenua – the name bestowed upon this group of tamariki and rangatahi by their pahake (elders) and Ngāti Ruaka hapū – reminds participants of their connection to their remnant ancestral lands and environs, and their inherent responsibilities to these special places and spaces. This is particularly important, given the majority of participants live away from their ancestral lands, and knowledge imparted through wānanga is not generally accessible. This paper draws on the learnings from wānanga on tuna (freshwater eels) and kākahi (freshwater mussels), from the perspective of four rangatahi. These rangatahi affiliate to Rānana Marae, Whanganui River, and have whakapapa connections to Ngāti Ruaka and other hapū from the Rānana area. Of significance is that the wānanga allow tamariki and rangatahi to re-establish their connections with each other, traditional kai and the environment, and help to foster an appreciation for what it means to actively rekindle one’s ahi kā (ancestral fires of occupation) and to learn and practice tikanga of the hapū.
description: Mahika Kai Journal, Vol 1 No 1 (2020): Special Issue: Proceedings of the Mahika Kai Conference 2019
BF theory explanation of the entropy for rotating isolated horizons
Creators: name: Wang, Jingbo
name: Huang, Chao-Guang
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, the isolated horizons with rotation are considered. It is shown that the symplectic form is the same as that in the nonrotating case. As a result, the boundary degrees of freedom can be also described by an SO$(1,1)$ BF theory. The entropy satisfies the Bekenstein-Hawking area law with the same Barbero-Immirzi parameter.
description: 8 pages, no figures
Generating semantically enriched diagnostics for radiological images using machine learning
Creators: name: Gasimova, Aydan
Publisher: name: Imperial College London
Year: 2021

description: Development of Computer Aided Diagnostic (CAD) tools to aid radiologists in pathology detection and decision making relies considerably on manually annotated images. With the advancement of deep learning techniques for CAD development, these expert annotations no longer need to be hand-crafted, however, deep learning algorithms require large amounts of data in order to generalise well. One way in which to access large volumes of expert-annotated data is through radiological exams consisting of images and reports. Using past radiological exams obtained from hospital archiving systems has many advantages: they are expert annotations available in large quantities, covering a population-representative variety of pathologies, and they provide additional context to pathology diagnoses, such as anatomical location and severity. Learning to auto-generate such reports from images presents many challenges such as the difficulty in representing and generating long, unstructured textual information, accounting for spelling errors and repetition or redundancy, and the inconsistency across different annotators. In this thesis, the problem of learning to automate disease detection from radiological exams is approached from three directions. Firstly, a report generation model is developed such that it is conditioned on radiological image features. Secondly, a number of approaches are explored aimed at extracting diagnostic information from free-text reports. Finally, an alternative approach to image latent space learning from current state-of-the-art is developed that can be applied to accelerated image acquisition.
Wahine Toa Hunting
Creators: name: Marsh, Pania Te Paiho
Publisher: name: Mahika Kai Journal
Year: 2020

description: Pania Tepaiho Marsh was a Keynote Speaker at the Mahika Kai Conference in 2019 and is a hunting practitioner that is focused on supporting women to feed their whanau be part of a sisterhood and provide opportunities to utilise our natural resources to fill our freezers.
description: Mahika Kai Journal, Vol 1 No 1 (2020): Special Issue: Proceedings of the Mahika Kai Conference 2019
On damping created by heterogeneous yielding in the numerical analysis of nonlinear reinforced concrete frame elements
Creators: name: Jehel, Pierre
name: Cottereau, Régis
Publisher: name: arXiv
Year: 2015
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: In the dynamic analysis of structural engineering systems, it is common practice to introduce damping models to reproduce experimentally observed features. These models, for instance Rayleigh damping, account for the damping sources in the system altogether and often lack physical basis. We report on an alternative path for reproducing damping coming from material nonlinear response through the consideration of the heterogeneous character of material mechanical properties. The parameterization of that heterogeneity is performed through a stochastic model. It is shown that such a variability creates the patterns in the concrete cyclic response that are classically regarded as source of damping.
Relation entre les propriétés hygrothermiques et acoustiques des bétons de chanvre et de moelle
Creators: name: Abbas, Mohamed Said
Publisher: name: Academic Journal of Civil Engineering
Year: 2022

description: Les bétons biosourcés sont des matériaux de construction issus de la biodiversité qui ont un pouvoir isolant généralement supérieur à celui des matériaux classiques. Néanmoins, ils présentent également un fort caractère hygroscopique qui peut altérer substantiellement leurs propriétés thermiques. Dans ce contexte, l’étude des propriétés hygrothermiques de ce type de matériaux est une partie incontournable de leur développement et démocratisation. Cette caractérisation est souvent chronophage (les essais peuvent prendre plusieurs mois) et demande des équipements spécifiques qui peuvent être très coûteux. Cet article présente une démarche dont le but est de déterminer les propriétés hygrothermiques des bétons biosourcés à partir de mesures acoustiques déterminées au tube de Kundt, un essai qui prend à peine quelques minutes. A partir de cet essai, il est possible de calculer des paramètres de la géométrie du réseau poreux grâce à l’inversion de modèles acoustiques comme le modèle de Zwikker & Kosten ou celui de Johnson Champoux Allard (JCA). Une étude croisée entre les paramètres géométriques et les propriétés hygrothermiques de plusieurs bétons de moelle et de chanvre a été menée. Une possible corrélation a été trouvée entre la porosité intergranulaire et la conductivité thermique, ainsi qu’entre la perméabilité à l’air et la perméabilité à la vapeur. Elles devront être confirmées par une campagne expérimentale plus vaste avec des matériaux plus variés. Les résultats semblent indiquer que seuls les phénomènes régis par les caractéristiques des macropores peuvent être reliés au domaine acoustique.
description: Academic Journal of Civil Engineering, Vol 40 No 1 (2022): Special Issue - RUGC 2022
All that Glitters: Judge Clayton and a Forgotten Chapter of the Cherokee Removal in Georgia
Creators: name: Edwards, Jason Lee
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2021

description: Following Georgia’s extension of civil and criminal jurisdiction over the Cherokee Nation, Augustin Smith Clayton, judge of the Western Circuit of the Superior Court of Georgia, presided over numerous cases involving Georgia’s attempt to exert authority. During the course of his judgeship, the discovery of gold in the Cherokee territory complicated the issues. An examination of the cases Judge Clayton presided over that directly involved Georgia’s attempts to preserve the gold mines for the use of the state highlights the volatile nature of Georgia politics in the years prior to the Cherokee Removal, sheds light on the breakdown of the Troupite faction, and underscores the conflict between the federal government, the state of Georgia, and the Cherokee Nation concerning sovereignty.
Sequential Dimensionality Reduction for Extracting Localized Features
Creators: name: Casalino, Gabriella
name: Gillis, Nicolas
Publisher: name: arXiv
Year: 2015
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Numerical Analysis (math.NA)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Linear dimensionality reduction techniques are powerful tools for image analysis as they allow the identification of important features in a data set. In particular, nonnegative matrix factorization (NMF) has become very popular as it is able to extract sparse, localized and easily interpretable features by imposing an additive combination of nonnegative basis elements. Nonnegative matrix underapproximation (NMU) is a closely related technique that has the advantage to identify features sequentially. In this paper, we propose a variant of NMU that is particularly well suited for image analysis as it incorporates the spatial information, that is, it takes into account the fact that neighboring pixels are more likely to be contained in the same features, and favors the extraction of localized features by looking for sparse basis elements. We show that our new approach competes favorably with comparable state-of-the-art techniques on synthetic, facial and hyperspectral image data sets.
description: 24 pages, 12 figures. New numerical experiments on synthetic data sets, discussion about the convergence