cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Nutritional enrichment of fruit peel wastes using lipid accumulating Aurantiochytrium strain as feed for aquaculture in the North-East Region of India
Creators: name: Saikia, Diganta Kumar
name: Chikkaputtaiah, Channakeshavaiah
name: Velmurugan, Natarajan
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Hematology
subject: Plant Biology

description: Utilization of fruit peel wastes to grow thraustochytrids for nutritional enrichment of wastes will lower environmental and economic costs associated with feedstock specific for aquaculture industries. In this study, high-carbohydrate content agricultural wastes, such as orange, pineapple, banana, and mausambi fruit peels were enriched with essential fatty acids producing thraustochytrids Aurantiochytrium sp. ATCC276. Characterizations of fruit peels revealed the presence of high carbohydrate content (9–16%) and reducing sugars essential for the growth of thraustochytrids. Optimization for lipid production of Aurantiochytrium sp. ATCC276 was carried out using response surface methodology (RSM) in combination with different concentrations of fruit peels in solid-state fermentation (SSF) conditions. Fruit peels composed of SSF experiments were designed using a central composite design. Aurantiochytrium sp. ATCC276 cells efficiently utilized the sugar components of fruit peels for their growth and lipid accumulation. Different SSF composites made of fruit peels were significantly enriched with fatty acids of Aurantiochytrium sp. ATCC276 cells. Culturing Aurantiochytrium sp. ATCC276 cells with these waste materials demonstrated distinct responses towards lipid accumulation at different compositions. The optimized SSF composite consists of 9.91 g 100 mL−1 orange, 5 g 100 mL−1 mausambi, 4.12 g 100 mL−1 pineapple, and 8.01 g 100 mL−1 banana peels and was enriched with 8.37% of Aurantiochytrium sp. ATCC276-derived lipids. This study expands the benefits and bioprocessing potential of essential fatty acids producing Aurantiochytrium sp. ATCC276 along with fruit peel wastes which a frontier in circular bioeconomy and valorizing waste for usage.
Treatment of high-strength saline bilge wastewater by four pilot-scale aerobic moving bed biofilm reactors and comparison of the microbial communities
Creators: name: Mazioti, Aikaterini A.
name: Vyrides, Ioannis
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Four Pilot-scale Moving Bed Biofilm Reactors (MBBRs) were operated for the treatment of real, saline, bilge wastewater. The MBBRs were connected in pairs to create two system configurations with different filling ratios (20%, 40%) and were operated in parallel. The inflow organic loading rate (OLR) varied from 3.6 ± 0.2 to 7.8 ± 0.6 g COD L−1 d−1, salinity was >15 ppt and three hydraulic residence times (HRTs) were tested 48, 30 and 24 h. In both systems, the first-stage bioreactors (R1 and R3) eliminated the higher part of the organic load (57%–65%). The second-stage bioreactors (R2 and R4) removed an additional fraction (18%–31%) of the organic load received by the effluent of R1 and R3, respectively. The microbial communities of the influent wastewater, suspended, and attached biomass were determined using 16S rRNA gene amplicon sequencing analysis. The evolution of the microbial communities was investigated and compared over the different operational phases. The microbial communities of the biofilm presented higher diversity and greater stability in composition over time, while the suspended biomass exhibited intense and rapid changes in the dominance of genera. Proteobacteria, Bacteroidetes and Firmicutes were highly present in the biofilm. The genera Celeribacter, Novispirillum, Roseovarius (class: Alphaproteobacteria) and Formosa (class: Flavobacteriia) were highly present during all operational phases. Principal Component Analysis (PCA) was used to identify similarities between samples, exhibiting high relation of samples according to the series of the bioreactor (1st, 2nd).
PSpice modeling of the pulsed electroacoustic method for dispersive polymer sample application
Creators: name: Pujol, Aurélien
name: Berquez, Laurent
name: Baudoin, Fulbert
name: Payan, Denis
Publisher: name: arXiv
Year: 2024
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: In space applications, space charge inside dielectric materials can lead to unwanted phenomena such as breakdown and electrostatic discharge. To prevent such incidents, the pulsed electroacoustic (PEA) device is employed to measure the space charge of dielectric samples. Unfortunately, most of the current PEA signal processing methods are inaccurate in studying the dielectric materials that attenuate and disperse the acoustic wave, as well as studying multi-layer or thin samples. A model under the PSpice software is developed in this work with the aim of improving the PEA signal processing. This model is an evolution of previous works, including the attenuation and dispersion of a polymer sample using the nearly local Kramers--Kronig relation. This model of the polymer sample is implemented into PSpice as a frequency dependent transmission line using Branin's method of characteristics model. A comparison of a model simulation and an experimental PEA signal obtained from a PTFE sample is presented.
Synthesis, self-assembly and surface-active properties of alkyl halide mediated imidazolium monomeric surfactants
Creators: name: Kaur, Jaswinder
name: Farzeen, Roheela
name: Kumar, Anil
name: Singh, Manpreet
name: Lal, Madan
name: Upadhyaya, Sanjay Kumar
name: Kishore, Kamal
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biophysics
subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Virology

description: Two imidazolium monomeric surfactants, that is, 1-tetradecyl-1H-imidazole [14IM] and 1-hexadecyl-1H-imidazole [16IM] has been synthesized and characterized by 1H NMR,13C NMR, FTIR, HRMS spectroscopies and thermogravimetric analysis (TGA) for number and types of protons and carbon, functional groups, estimation of molecular weight and thermal stability of these compounds. The conductivity was measured in double distilled water at four different temperatures, 288, 293, 298, and 303 K. The results showed that these surfactants behave as weak electrolytes. The density and viscosity data have shown the existence of strong interactions between imidazolium surfactants and solvent (water) molecules. The results obtained from Root’s equation indicate that surfactant–solvent interactions are important than surfactant–surfactant interactions in dilute solutions, that is, below critical micellar concentration. The values of constants obtained from Einstein and Moulik equations have revealed that there was stronger and significant interaction between imidazolium surfactants and water molecules below critical micellar region. The surface tension parameters have indicated that these surfactants are good contenders to lower the surface tension of air/water interface. The results obtained from surface tension data have shown that standard change in free energy of micellization (ΔG°mic) and adsorption (ΔG°ads) were negative, indicating that these surfactants molecules have spontaneous tendencies to form micelles in solution at higher concentration and to get adsorb at the air/water interface at lower concentration. The TGA has indicated good thermally stability and activation energy for thermal decomposition was found in the range of 37.26.26–98.20.20 kJ/mol.
Comparative investigation of the catalytic application of α/β/γ-MnO2 nanoparticles synthesized by green and chemical approaches
Creators: name: Shehroz, Hamza
name: Ali, Sarmed
name: Bibi, Guria
name: Khan, Tahreem
name: Jamil, Saba
name: Khan, Shanza Rauf
name: Hashaam, Muhammad
name: Naz, Saman
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified

description: Three phases (α, β, and γ) of manganese dioxide (MnO2) are successfully stabilized in a single entity for the first time. For this purpose, Citrullus colocynthis (bitter apple) extract is used as a natural surfactant in green synthesis. MnO2 nanoparticles were synthesized in the presence and absence of plant extracts under the same conditions. The morphology of both products is analysed by SEM and STEM to understand the role of plant extract in controlling the morphology of particles. The crystallinity and composition are analysed by XRD and confirmed that the product is composed of multiple phases α, β, and γ. The reduction of dyes and nitroarenes is studied using MnO2 nanoparticles (green and chemical products) as catalysts. The apparent rate constant, a percentage reduction, time reduction and reduced concentration compare the activities of both catalysts. After comparative data analysis, the catalytic reduction of picric acid is found fastest among all the substrates. All the results are analysed based on structure, functional group and affinity towards catalysts.
Featherweight Assisted Vulnerability Discovery
Creators: name: Binkley, David
name: Moonen, Leon
name: Isaacman, Sibren
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Predicting vulnerable source code helps to focus attention on those parts of the code that need to be examined with more scrutiny. Recent work proposed the use of function names as semantic cues that can be learned by a deep neural network (DNN) to aid in the hunt for vulnerability of functions. Combining identifier splitting, which splits each function name into its constituent words, with a novel frequency-based algorithm, we explore the extent to which the words that make up a function's name can predict potentially vulnerable functions. In contrast to *lightweight* predictions by a DNN that considers only function names, avoiding the use of a DNN provides *featherweight* predictions. The underlying idea is that function names that contain certain "dangerous" words are more likely to accompany vulnerable functions. Of course, this assumes that the frequency-based algorithm can be properly tuned to focus on truly dangerous words. Because it is more transparent than a DNN, the frequency-based algorithm enables us to investigate the inner workings of the DNN. If successful, this investigation into what the DNN does and does not learn will help us train more effective future models. We empirically evaluate our approach on a heterogeneous dataset containing over 73000 functions labeled vulnerable, and over 950000 functions labeled benign. Our analysis shows that words alone account for a significant portion of the DNN's classification ability. We also find that words are of greatest value in the datasets with a more homogeneous vocabulary. Thus, when working within the scope of a given project, where the vocabulary is unavoidably homogeneous, our approach provides a cheaper, potentially complementary, technique to aid in the hunt for source-code vulnerabilities. Finally, this approach has the advantage that it is viable with orders of magnitude less training data.
description: 17 pages, 6 figures, 6 tables
Oxysterols in Vascular Cells and Role in Atherosclerosis
Creators: name: Luquain-Costaz, Celine
name: Delton, Isabelle
Publisher: name: arXiv
Year: 2024
Subjects: subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences

description: Atherosclerosis is a major cardiovascular complication of diseases associated with elevated oxidative stress such as type 2 diabetes and metabolic syndrome. In these situations, low density lipoproteins (LDL) undergo oxidation. Oxidized LDL display proatherogenic activities through multiple and complex mechanisms which lead to dysfunctions of vascular cells (endothelial cells, smooth muscle cells and macrophages). Oxidized LDL are enriched in oxidized products of cholesterol called oxysterols formed either by autoxidation, enzymatically, or by both mechanisms. Several oxysterols have been shown to accumulate in atheroma plaques and to play a key role in atherogenesis. Depending on the type of oxysterols, various biological effects are exerted on vascular cells to regulate the formation of macrophage foam cells, endothelial integrity, adhesion and transmigration of monocytes, plaque progression and instability. Most of these effects are linked to the ability of oxysterols to induce cellular oxidative stress and cytotoxicity mainly through apoptosis and proinflammatory mediators. Like for excess cholesterol, high density lipoproteins (HDL) can exert antiatherogenic activity stimulating the efflux of oxysterols that have accumulated in foamy macrophages.
On the calibration of powerset speaker diarization models
Creators: name: Plaquet, Alexis
name: Bredin, Hervé
Publisher: name: arXiv
Year: 2024
Subjects: subject: Sound (cs.SD)
subject: Machine Learning (cs.LG)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: End-to-end neural diarization models have usually relied on a multilabel-classification formulation of the speaker diarization problem. Recently, we proposed a powerset multiclass formulation that has beaten the state-of-the-art on multiple datasets. In this paper, we propose to study the calibration of a powerset speaker diarization model, and explore some of its uses. We study the calibration in-domain, as well as out-of-domain, and explore the data in low-confidence regions. The reliability of model confidence is then tested in practice: we use the confidence of the pretrained model to selectively create training and validation subsets out of unannotated data, and compare this to random selection. We find that top-label confidence can be used to reliably predict high-error regions. Moreover, training on low-confidence regions provides a better calibrated model, and validating on low-confidence regions can be more annotation-efficient than random regions.
Unveiling quantum entanglement and correlation of sub-Ohmic and Ohmic baths for quantum phase transitions in dissipative systems
Creators: name: Qian, Xiaohui
name: Sun, Zhe
name: Zhou, Nengji
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: By employing the spin-boson model in a dense limit of environmental modes, quantum entanglement and correlation of sub-Ohmic and Ohmic baths for dissipative quantum phase transitions are numerically investigated based on the variational principle. With several measures borrowed from quantum information theory, three different types of singularities are found for the first-order, second-order, and Kosterlitz-Thouless phase transitions, respectively, and the values of transition points and critical exponents are accurately determined. Besides, the scaling form of the quantum discord in the Ohmic case is identified, quite different from that in the sub-Ohmic regime. In a two-spin model, two distinct behaviors of the quantum discord are uncovered: one is related to the quantum entanglement between two spins and the other is decided by the correlation function in the position space rather than the entanglement.
description: 15 pages, 10 figures
Murs en paille porteuse : mise en oeuvre et comportement
Creators: name: Quirant, Jérôme
name: Averseng, Julien
name: Hamelin, Cédric
Publisher: name: Academic Journal of Civil Engineering
Year: 2019

description: La paille porteuse est une technique de construction qui existe depuis plus d’un siècle mais qui a peu fait l’objet d’investigations concernant les processus de mise en œuvre, l’évaluation des performances mécaniques ou la tenue au feu. Dans le cadre de projets de fin d’études réalisés par les étudiants de l’IUT de Nîmes, des améliorations dans le processus de mise en œuvre, des essais mécaniques ou des tests de fluages ont été réalisés. Nous présentons ici les résultats obtenus, premiers éléments permettant de qualifier la paille porteuse en tant que solution constructive écologique, viable et durable.
description: Academic Journal of Civil Engineering, Vol 36 No 1 (2018): Special Issue - RUGC 2018 St Etienne
Nonstationary behavior of the upconversion processes of $Er^{3+}:Yb^{3+}$ ions pair doping the $Y_2O_3$ ceramic illuminated with 976 nm laser light
Creators: name: Dudas, Liviu
Publisher: name: arXiv
Year: 2024
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The studies of the upconversion response of RE ions in various hosts usually depict a static picture, whereas, at constant illumination, the upconverted emission is also constant. We discovered here that, at least in the case of $Y_2O_3$ doped with $Er^{3+}:Yb^{3+}$, this is not the case. At constant illuminated power, the upconversion emission is not only fluctuating, but it varies in a manner which seems to be a superposition of intensity waves with different frequencies. We present here the results of the measurements we've performed on $Y_2O_3$ with $1\%Er^{3+}-2\%Yb^{3+}$. The origin of this effect remain to be established but it shows that the energy transfers during the upconversion are an interplay of absorption-saturation-emission-relaxation processes.
description: 6 pages, 8 figures, data presented at Nanobiomat june-2023 conference
Optimisation de stratégies de chantier et de gestion des déchets pour la déconstruction de bâtiments
Creators: name: Queheille, Eva
name: Saiyouri, Nadia
name: Taillandier, Franck
name: Guerlou, Pierre
Publisher: name: Academic Journal of Civil Engineering
Year: 2019

description: Le domaine du bâtiment fait face à de nombreux enjeux environnementaux, notamment au travers de sa gestion des déchets lors de démolitions. Afin d’encourager les entreprises du secteur à améliorer leurs pratiques, les réglementations européenne et française ciblent une valorisation matière minimale de 70% massique pour 2020. Cependant, pour atteindre cet objectif, il est nécessaire de prendre en compte la démolition dans son ensemble (depuis le début du chantier jusqu’à la valorisation des déchets). Dans cet article, nous avons proposé un modèle d’optimisation multi-objectif permettant d’optimiser les chantiers de démolition. Le modèle est composé de 17 variables de décision (nombre d’ouvriers, type de traitement des déchets…) qui influencent trois objectifs : coût, délais et valorisation matière. L’application du modèle sur un cas réel a souligné son efficacité et son intérêt : l’approche a permis de trouver une stratégie conduisant à une meilleure valorisation des déchets sans surcoûts ni augmentation des délais.
description: Academic Journal of Civil Engineering, Vol 36 No 1 (2018): Special Issue - RUGC 2018 St Etienne
Additional file 4 of CAR-T cell therapy followed by allogenic hematopoietic stem cell transplantation yielded comparable outcome between Ph like ALL and other high-risk ALL
Creators: name: Dai, Hai-ping
name: Kong, Dan-qing
name: Shen, Hong-jie
name: Cui, Wei
name: Wang, Qian
name: Li, Zheng
name: Yin, Jia
name: Kang, Li-qing
name: Yu, Lei
name: Wu, De-pei
name: Tang, Xiao-wen
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Additional file 4. Statistics.
PuzzleBots: Physical Coupling of Robot Swarms
Creators: name: Yi, Sha
name: Temel, Zeynep
name: Sycara, Katia
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Robot swarms have been shown to improve the ability of individual robots by inter-robot collaboration. In this paper, we present the PuzzleBots - a low-cost robotic swarm system where robots can physically couple with each other to form functional structures with minimum energy consumption while maintaining individual mobility to navigate within the environment. Each robot has knobs and holes along the sides of its body so that the robots can couple by inserting the knobs into the holes. We present the characterization of knob design and the result of gap-crossing behavior with up to nine robots. We show with hardware experiments that the robots are able to couple with each other to cross gaps and decouple to perform individual tasks. We anticipate the PuzzleBots will be useful in unstructured environments as individuals and coupled systems in real-world applications.
The athlete's high? : can physical activity and sport participation prevent substance use in youth?
Creators: name: Fagan, Matthew James
Publisher: name: University of British Columbia
Year: 2022

description: A particular period of experimentation and a time in which substance use behaviours might be first adopted is adolescence. The purpose of my dissertation was, first, to examine if physical activity prevents substance use behaviour among youth; and second, to assess if school connectedness plays a role in this association. In study 1, a scoping review was conducted to examine the prospective associations between physical activity and substance use. Based on the findings from the scoping review, the second study utilized a cross-sectional design to examine physical activity (meeting MVPA guidelines; non-competitive or competitive school sport; outside-of-school sport) and associations with four current substance use behaviours (cigarette, e-cigarette, cannabis, binge drinking). Study 2 also tested if school connectedness moderated these associations. Finally, study 3 examined if changes in physical activity may be associated with the initiation of current substance use while evaluating the potential moderation and mediation of school connectedness. Studies 2 (n=73,672 ) and 3 (n=3,244) utilized a combined three years of the COMPASS study (Y:6 2017-2018, Y:7 2018-2018, Y:8 2019-2020). Within studies 2 and 3 multi-level logistic regressions were built with different predictors and outcomes to reflect the longitudinal nature of study 3. While results demonstrate evidence for cross-sectional and prospective associations between physical activity and substance use, not all associations were negative. Additionally, less evidence was found prospectively (study 3) than cross-sectionally (study 2) for the associations between physical activity and substance use. Study 2 provided evidence for school connectedness moderating the cross-sectional association between physical activity and substance use. Study 3 found evidence for school connectedness negatively mediating the association between two distinct types of sport participation (outside-of-school and competitive school sport) and current substance use (e-cigarette use and cannabis use). Overall, there was no evidence that physical activity confers broad, universal benefits in preventing substance use among youth. Sport participation may provide a contextual experience that enhances school connectedness which in turn is associated with substance use prevention. Future work should be considered to confirm this possibility.
13 July 2023 (Day 4) CERN – NASA Open Science Summit Sketch Notes
Creators: name: Seibold, Heidi
Publisher: name: Forschungzentrum Jülich
Year: 2023

description: doi:10.5281/ZENODO.8173160
description: CERN/NASA “Accelerating the Adoption of Open Science”, from July 10th-14th at CERN in Geneva, Switzerland https://indico.cern.ch/event/1254282/ 13 July 2023 (Day 4) Reproducible, Reusable and Rewarding Science
Data Management Plan (OPERAS-PLUS Deliverable 1.2)
Creators: name: Ernst, Elisabeth
Publisher: name: Zenodo
Year: 2023
Subjects: open scholarly communication
open access
open science
OPERAS-PLUS
scholarly communication

description: The OPERAS-PLUS Data Management Plan (DMP) provides information regarding the collection, management, and processing of data collected and/or produced during the project phase (1 September 2022-31 August 2025) and outlines measures to make this
 data FAIR (findable, accessible, interoperable, reusable).
Modeling luminescent coupling in multi-junction solar cells: Perovskite Silicon tandem case study
Creators: name: Manley, Phillip
name: Hammerschmidt, Martin
name: Zschiedrich, Lin
name: Jäger, Klaus
name: Becker, Christiane
name: Burger, Sven
Publisher: name: arXiv
Year: 2024
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Luminescent coupling is a characteristic of multi-junction solar cells which has often been neglected in models of their performance. The effect describes the absorption of light emitted from a higher band gap semiconductor by a lower band gap semiconductor. In this way, light which might have been lost can be utilized for current generation. We present a framework for modeling this effect in both planar layer stacks and devices with periodic nanostructuring. As a case study, we evaluate how luminescent coupling is affected by the inclusion of nanostructuring in a perovskite silicon tandem solar cell. We find that nanostructuring, while reducing the reflection loss for tandem solar cells also reduces the luminescent coupling, allowing more light to be emitted to the surroundings, when compared to planar devices. This highlights the need to include modeling of this effect into optimization schemes in order to find the trade-off between these two effects. The published version of this work is available at https://doi.org/10.1117/12.3023941.
description: 7 pages, 3 figures
13 July 2023 (Day 4) Panel 4a: Reproducibility, Reusability and Reward Systems in Practice
Creators: name: McKiernan, Erin
name: Jacobs, Neil
name: Seibold, Heidi
name: Spichtinger, Daniel
name: Susi, Toma
Publisher: name: Forschungzentrum Jülich
Year: 2023

description: doi:10.5281/ZENODO.8173184
description: CERN/NASA “Accelerating the Adoption of Open Science”, from July 10th-14th at CERN in Geneva, Switzerland https://indico.cern.ch/event/1254282/ 13 July 2023 (Day 4) Reproducible, Reusable and Rewarding Science Watch the recording of this contribution here: https://cds.cern.ch/record/2865373
Ressaut hydraulique en canal rectangulaire à radier triangulaire
Creators: name: Khattaoui, Mohammed
name: Boudlal, Omar
name: Achour, Bachir
Publisher: name: Academic Journal of Civil Engineering
Year: 2019

description: Notre étude s’intéresse au ressaut hydraulique dans un bassin de dissipation de forme rectangulaire à radier triangulaire. Deux approches théoriques sont réalisées. Une approche classique et une nouvelle approche dans laquelle nous avons introduit une force de résistance liés à la forme composée du canal. Les deux équations résultantes sont présentées en termes adimensionnelles afin de leur donner un caractère de validité général. Rappelons ici que la similitude entre deux ressauts hydrauliques exige uniquement l’égalité du nombre de Froude de l’écoulement incident. L’effet du nombre de Reynolds est négligeable du fait que les forces de viscosité sont négligeables devant les forces d’inertie. La connaissance du rapport des hauteurs conjuguées permet d’évaluer le rendement du ressaut à l’aide d’une équation présentée également sous forme adimensionnelle. Une confrontation entre le développement classique et la nouvelle approche est illustrée par des figures aussi bien pour le rapport des hauteurs conjuguées que pour le rendement.
description: Academic Journal of Civil Engineering, Vol 36 No 1 (2018): Special Issue - RUGC 2018 St Etienne
title: Qu’apprend-on avec le jeu vidéo Minecraft dans les classes vaudoises de cycle 2 au primaire ?
title: Qu’apprend-on avec le jeu vidéo Minecraft dans les classes vaudoises de cycle 2 au primaire ?
titleType: AlternativeTitle
Creators: name: Altieri, Piero
Publisher: name: Unknown
Year: 0

description: Peut-on apprendre en utilisant un jeu vidéo en classe ? Quelle est la place du jeu vidéo à l’école ? Est-ce qu’un jeu vidéo permet d’apprendre autant voire plus efficacement que par des modalités plus communes ? Ces divers questionnements sont à l’origine de ce travail de mémoire, que j’ai mené avec deux classes vaudoises de 5H, durant ma dernière année de formation à la HEPL. Dans cette recherche, j’explique comment j’en suis venu à faire jouer mes deux classes de stage au jeu vidéo Minecraft, sur des IPads empruntés à la HEPL, lors de ma troisième année de formation. Je raconte comment cela s’est déroulé, quelles activités j’ai mises en place, quels apprentissages j’ai tenté de transmettre aux élèves par ce biais assez peu exploité aujourd’hui, à ma connaissance. Car il s’agit bien de parler d’apprentissage dans ce travail. J’ai cherché à savoir comment un enseignant pouvait guider les élèves vers des apprentissages significatifs, en utilisant un jeu vidéo en classe. Il a fallu choisir un jeu vidéo adéquat, utilisable par les élèves, élaborer une méthodologie et un dispositif de recherche dont je puisse rendre compte des résultats. Les élèves avec qui j’ai travaillé ont été filmés durant le processus et de nombreuses illustrations accompagnent les séances de jeu, qui sont relatées sous la forme d’un journal de bord, rédigé tout au long de l’année scolaire. Les jeux vidéo, lorsqu’on en parle de manière positive, sont réputés pour l’enthousiasme et la motivation à accomplir des tâches qu’ils génèrent. Le jeu fait partie intégrante du développement de la pensée abstraite de l’enfant selon les travaux de Vygotski, sur lesquels s’appuie ce travail. J’ai donc décidé de mettre en lien ses théories avec les jeux numériques, présents dans le quotidien de nombreux apprenants mais peu représentés en milieu scolaire.
14 July 2023 (Day 5) CERN – NASA Open Science Summit Sketch Notes
Creators: name: Seibold, Heidi
Publisher: name: Forschungzentrum Jülich
Year: 2023

description: doi:10.5281/ZENODO.8173016
description: CERN/NASA “Accelerating the Adoption of Open Science”, from July 10th-14th at CERN in Geneva, Switzerland https://indico.cern.ch/event/1254282/ 14 July 2023 (Day 5) Towards Open Science
Amélioration de la précision des formules d’interaction pour les structures d’échafaudage sensibles aux effets du second ordre
Creators: name: Mercier, Charlotte
name: Khelil, Abdel
name: Al Mahmoud, Firas
name: Pamies, Alain
Publisher: name: Academic Journal of Civil Engineering
Year: 2019

description: Les formules d’interaction proposées par l’Eurocode 3 Partie 1-1 permettent de vérifier la résistance des barres comprimées fléchies en prenant en compte les imperfections initiales de la structure sans toutefois les inclure dans le modèle de la structure. Cependant, à travers plusieurs exemples, nous avons mis en évidence que les résultats obtenus à partir de la vérification des barres comprimées fléchies avec ces formules d’interaction sont surestimés par rapport à une vérification en section, lorsque les imperfections initiales sont incluses dans le modèle. Cette différence est due au coefficient de réduction pour le flambement χ, qui est défini pour une structure chargée à son maximum. Afin de pallier ce problème, nous avons donc défini trois nouvelles formules d’interaction, selon la classe de la section transversale et le critère souhaité (élastique, plastique linéaire ou plastique non-linéaire). Ces formules d’interaction sont basées sur la définition d’un facteur de réduction au flambement χ*, variable suivant le niveau de chargement. Une nouvelle procédure de calcul pour le dimensionnement des barres comprimées fléchies sans déversement est proposée.
description: Academic Journal of Civil Engineering, Vol 36 No 1 (2018): Special Issue - RUGC 2018 St Etienne
Triangle Graph Interest Network for Click-through Rate Prediction
Creators: name: Jiang, Wensen
name: Jiao, Yizhu
name: Wang, Qingqin
name: Liang, Chuanming
name: Guo, Lijie
name: Zhang, Yao
name: Sun, Zhijun
name: Xiong, Yun
name: Zhu, Yangyong
Publisher: name: arXiv
Year: 2022
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Click-through rate prediction is a critical task in online advertising. Currently, many existing methods attempt to extract user potential interests from historical click behavior sequences. However, it is difficult to handle sparse user behaviors or broaden interest exploration. Recently, some researchers incorporate the item-item co-occurrence graph as an auxiliary. Due to the elusiveness of user interests, those works still fail to determine the real motivation of user click behaviors. Besides, those works are more biased towards popular or similar commodities. They lack an effective mechanism to break the diversity restrictions. In this paper, we point out two special properties of triangles in the item-item graphs for recommendation systems: Intra-triangle homophily and Inter-triangle heterophiy. Based on this, we propose a novel and effective framework named Triangle Graph Interest Network (TGIN). For each clicked item in user behavior sequences, we introduce the triangles in its neighborhood of the item-item graphs as a supplement. TGIN regards these triangles as the basic units of user interests, which provide the clues to capture the real motivation for a user clicking an item. We characterize every click behavior by aggregating the information of several interest units to alleviate the elusive motivation problem. The attention mechanism determines users' preference for different interest units. By selecting diverse and relative triangles, TGIN brings in novel and serendipitous items to expand exploration opportunities of user interests. Then, we aggregate the multi-level interests of historical behavior sequences to improve CTR prediction. Extensive experiments on both public and industrial datasets clearly verify the effectiveness of our framework.
description: This paper is accepted by WSDM 2022. Source code: https://github.com/alibaba/tgin
"I Shake The Package To Check If It's Mine": A Study of Package Fetching Practices and Challenges of Blind and Low Vision People in China
Creators: name: Lei, Wentao
name: Fan, Mingming
name: Thang, Juliann
Publisher: name: arXiv
Year: 2022
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: With about 230 million packages delivered per day in 2020, fetching packages has become a routine for many city dwellers in China. When fetching packages, people usually need to go to collection sites of their apartment complexes or a KuaiDiGui, an increasingly popular type of self-service package pickup machine. However, little is known whether such processes are accessible to blind and low vision (BLV) city dwellers. We interviewed BLV people (N=20) living in a large metropolitan area in China to understand their practices and challenges of fetching packages. Our findings show that participants encountered difficulties in finding the collection site and localizing and recognizing their packages. When fetching packages from KuaiDiGuis, they had difficulty in identifying the correct KuaiDiGui, interacting with its touch screen, navigating the complex on-screen workflow, and opening the target compartment. We discuss design considerations to make the package fetching process more accessible to the BLV community.
description: In Proceedings of CHI Conference on Human Factors in Computing Systems (CHI '22), April 29-May 5, 2022, New Orleans, LA, USA
12 July 2023 (Day 3) Open-Source from policy to practice - Content
Creators: name: Lumnitz, Stefanie
name: Crawford, Steve
name: Ilie, Codrina
name: Ram, Karthik
name: Naim, Kamran
name: Gentemann, Chelle
name: Paseka, Rachel
name: Kohls, Alex
name: Seibold, Heidi
name: Dallmeier-Tiessen, Sunje
Publisher: name: Forschungzentrum Jülich
Year: 2023

description: doi:10.5281/ZENODO.8141879
description: CERN/NASA “Accelerating the Adoption of Open Science”, from July 10th-14th at CERN in Geneva, Switzerland https://indico.cern.ch/event/1254282/   12 July 2023 (Day 3) Open-Source from policy to practice slides
Design opportunities for personalized proactive notification management
Creators: name: Janzen, Izabelle Foster
Publisher: name: University of British Columbia
Year: 2022

description: Mobile devices deliver ‘notifications’ that interrupt the user for events like receiving text messages and emails. However, frequent interruptions reduce productivity and can increase stress. Notification management tools can reduce this distraction but substantial barriers, such as time and effort, prevent most users from managing their notifications. In this dissertation, I present three projects that aim to understand how to better support proactive notification management and I systematically design a novel notification management tool to better address user needs. We used a qualitative, user-centered approach consisting of interviews (N=71) and surveys (N=140). First, we explored how the notification management needs of older adults compared to the general population because other forms of distraction disproportionately impact older adults but their notification management needs had not been studied. Through semi-structured interviews (N=20) with both younger and older adults, we identified that many users desire a sense of control and agency over their attention that was difficult to achieve with current notification management technology. Second, we characterized how users could proactively control notifications through four design axes. We created five notification management design concepts that included design elements from under-explored areas of our design axes. Through semi-structured interviews (N=30), we probed user reactions to our design concepts to identify what design elements help address user concerns, such as a lack of control in notification management. The results of this study suggested there was strong interest to include reflective design elements within notification management. Lastly, we leveraged these results and a supplementary survey of users’ notification preferences (N=140) to design a novel notification management tool. The Reflective Spring Cleaning design supported infrequent notification management with visualizations of notification usage data and suggestions for personalization. We evaluated this design through a longitudinal study organized around semi-structured interviews (N=21). Our results demonstrated how the concept encouraged and supported users to proactively manage notifications through critical reflection on the impact of notifications. Our work outlines key design directions for how notification management tools can support proactive notification management and provide users a sense of control over their attention.
PACE: Poisoning Attacks on Learned Cardinality Estimation
Creators: name: Zhang, Jintao
name: Zhang, Chao
name: Li, Guoliang
name: Chai, Chengliang
Publisher: name: arXiv
Year: 2024
Subjects: subject: Databases (cs.DB)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Cardinality estimation (CE) plays a crucial role in database optimizer. We have witnessed the emergence of numerous learned CE models recently which can outperform traditional methods such as histograms and samplings. However, learned models also bring many security risks. For example, a query-driven learned CE model learns a query-to-cardinality mapping based on the historical workload. Such a learned model could be attacked by poisoning queries, which are crafted by malicious attackers and woven into the historical workload, leading to performance degradation of CE. In this paper, we explore the potential security risks in learned CE and study a new problem of poisoning attacks on learned CE in a black-box setting. Experiments show that PACE reduces the accuracy of the learned CE models by 178 times, leading to a 10 times decrease in the end-to-end performance of the target database.
Comportement en flexion d’un panneau sandwich avec peaux hybrides (GFRP–Matrice minérale) liées par une âme GFRP
Creators: name: Djama, Khaled
name: Michel, Laurent
name: Gabor, Aaron
name: Ferrier, Emmanuel
Publisher: name: Academic Journal of Civil Engineering
Year: 2019

description: Les panneaux sandwich sont grandement utilisés dans le domaine de l’aéronautique. En génie-civil, leur utilisation comme panneaux d’habillage en façade est assez répandue. En tant qu’éléments structurels, celles-ci restent peu étendues. L'objectif de ces travaux de recherche porte sur le développement de panneau de façade performant du point de vue mécanique. Les résultats de cette étude montrent un bon comportement en flexion de la structure testée, ainsi qu’une possibilité d’utilisation comme panneaux de grandes portées (1 à 6 m) pour une masse surfacique d’environ 20kg/m² (avec peaux hybride GFRP-Matrice minérale). La liaison des deux peaux du panneau GFRP-matrice minérale par des connecteurs en GFRP permet un comportement limitant les effets de cisaillement. Les couches minérales de part et d’autre du panneau permettent la tenue au feu, participent à la rigidification du système et reprennent les efforts de compression. Une modélisation numérique est proposée. Une loi de comportement plastique-endommageable est retenue pour la modélisation des couches minérales. L’effet de l’introduction d’une loi de traction-séparation (mode 2) dans la modélisation de l’interface GFRP–Matrice minérale est discuté.
description: Academic Journal of Civil Engineering, Vol 36 No 1 (2018): Special Issue - RUGC 2018 St Etienne
An analysis of current and future electricity production from biogas in Germany
Creators: name: Balussou, David
Publisher: name: KIT Scientific Publishing
Year: 2023
Subjects: Biogas
Simulation
Optimierung
Szenarien
simulation
optimization
scenarios

description: In this work a process simulation model identifies the most profitable German biogas plant types and sizes. Small manure and large-scale biowaste plants are currently the most economically attractive installations whereas the valorization of energy crops turns out to be unprofitable. Future developments are assessed with the help of a regional optimization model under constraints. Capacity expansion concerns small-scale manure and biowaste installations rather than plants based on energy crops.
13 July 2023 (Day 4) Reproducibility, Reusability and Reward Systems in Practice
Creators: name: Naim, Kamran
name: McKiernan, Erin
name: Jacobs, Neil
name: Seibold, Heidi
name: Spichtinger, Daniel
name: Susi, Toma
Publisher: name: Forschungzentrum Jülich
Year: 2023

description: doi:10.5281/ZENODO.8132958
description: CERN/NASA “Accelerating the Adoption of Open Science”, from July 10th-14th at CERN in Geneva, Switzerland https://indico.cern.ch/event/1254282/ 13 July 2023 (Day 4) Reproducibility, Reusability and Reward Systems in Practice Slides
From `Wow' to `Why': Guidelines for Creating the Opening of a Data Video with Cinematic Styles
Creators: name: Xu, Xian
name: Yang, Leni
name: Yip, David
name: Fan, Mingming
name: Wei, Zheng
name: Qu, Huamin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Data videos are an increasingly popular storytelling form. The opening of a data video critically influences its success as the opening either attracts the audience to continue watching or bores them to abandon watching. However, little is known about how to create an attractive opening. We draw inspiration from the openings of famous films to facilitate designing data video openings. First, by analyzing over 200 films from several sources, we derived six primary cinematic opening styles adaptable to data videos. Then, we consulted eight experts from the film industry to formulate 28 guidelines. To validate the usability and effectiveness of the guidelines, we asked participants to create data video openings with and without the guidelines, which were then evaluated by experts and the general public. Results showed that the openings designed with the guidelines were perceived to be more attractive, and the guidelines were praised for clarity and inspiration.
description: In Proceedings of CHI Conference on Human Factors in Computing Systems (CHI '22), April 29-May 5, 2022, New Orleans, LA, USA
11 July 2023 (Day 2) Open Data Policies and Practices - Content
Creators: name: Marcum, Chris
name: Mchunu, Nokuthula
name: Boyd, Jamie
name: Lumnitz, Stefanie
name: Paseka, Rachel
name: Spichtinger, Daniel
name: Gentemann, Chelle
name: Jones, Sarah
name: Lassila-Perini, Kati
name: Šimko, Tibor
name: Naim, Kamran
name: Paseka, Rachel
name: Kohls, Alex
name: Seibold, Heidi
name: Dallmeier-Tiessen, Sunje
Publisher: name: Forschungzentrum Jülich
Year: 2023

description: doi:10.5281/ZENODO.8141717
description: CERN/NASA “Accelerating the Adoption of Open Science”, from July 10th-14th at CERN in Geneva, Switzerland https://indico.cern.ch/event/1254282/ 11 July 2023 (Day 2) Open Data Policies and Practices
Fluorination Increases Hydrophobicity at the Macroscopic Level but not at the Microscopic Level
Creators: name: Di, Weishuai
name: Wang, Xin
name: Zhou, Yanyan
name: Mei, Yuehai
name: Wang, Wei
name: Cao, Yi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Hydrophobic interactions have been studied in detail in the past based on hydrophobic polymers, such as polystyrene (PS). Because fluorinated materials have relatively low surface energy, they often show both oleophobicity and hydrophobicity at the macroscopic level. However, it remains unknown how fluorination of hydrophobic polymer influences hydrophobicity at the microscopic level. In this work, we synthesized PS and fluorine-substituted PS (FPS) by reversible addition-fragmentation chain transfer polymerization method. Contact angle measurements confirmed that FPS is more hydrophobic than PS at the macroscopic level due to the introduction of fluorine. However, single molecule force spectroscopy experiments showed that the forces required to unfold the PS and FPS nanoparticles in water are indistinguishable, indicating that the strength of the hydrophobic ffect that drives the self-assembly of PS and FPS nanoparticles is the same at the microscopic level. The divergence of hydrophobic effect at the macroscopic and microscopic level may hint different underlying mechanisms: the hydrophobicity is dominated by the solvent hydration at the microscopic level and the surface-associated interaction at the macroscopic level.