cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Generation and characterization of frequency tuneable sub-15 fs pulses in a gas-filled hollow-core fiber pumped by a Yb:KGW laser
Creators: name: Sabbah, Mohammed
name: Belli, Federico
name: Brahms, Christian
name: Yu, Fei
name: Knight, Jonathan
name: Travers, John C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We investigate soliton self-compression and photoionization effects in an argon-filled antiresonant hollow-core photonic crystal fiber pumped with a commercial Yb:KGW laser. Before the onset of photoionization, we demonstrate self-compression of our 220~fs pump laser to 13~fs in a single and compact stage. By using the plasma driven soliton self-frequency blueshift, we also demonstrate a tuneable source from 1030 to ~700 nm. We fully characterize the compressed pulses using sum-frequency generation time-domain ptychography, experimentally revealing the full time-frequency plasma-soliton dynamics in hollow-core fibre for the first time.
Charging a quantum battery in a non-Markovian environment: a collisional model approach
Creators: name: Morrone, Daniele
name: Rossi, Matteo A. C.
name: Smirne, Andrea
name: Genoni, Marco G.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the effect of non-Markovianity in the charging process of an open-system quantum battery. We employ a collisional model framework, where the environment is described by a discrete set of ancillary systems and memory effects in the dynamics can be introduced by allowing these ancillas to interact. We study in detail the behaviour of the steady-state ergotropy and the impact of the information backflow to the system on the different features characterizing the charging process. Remarkably, we find that there is a maximum value of the ergotropy achievable: this value can be obtained either in the presence of memoryless environment, but only in the large-loss limit, as derived in [D. Farina et al., Phys. Rev. B 99, 035421 (2019)], or in the presence of an environment with memory also beyond the large-loss limit. In general, we show that the presence of an environment with memory allows us to generate steady-state ergotropy near to its maximum value for a much larger region in the parameter space and thus potentially in a shorter time. Relying on the geometrical measure of non-Markovianity, we show that in both the cases of an environment with and without memory the ergotropy maximum is obtained when the non-Markovianity of the dynamics of the battery is zero, possibly as the result of a non-trivial interplay between the memory effects induced by, respectively, the environment and the charger connected to the battery.
description: 11 pages, 9 figures
MOESM9 of Mitochondrial genome in Hypsizygus marmoreus and its evolution in Dikarya
Creators: name: Wang, Gang
name: Lin, Jingxian
name: Shi, Yang
name: Chang, Xiaoguang
name: Wang, Yuanyuan
name: Guo, Lin
name: Wang, Wenhui
name: Dou, Meijie
name: Deng, Youjin
name: Ming, Ray
name: Zhang, Jisen
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: Environmental Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 9: Table S3. Variation site statistics for the mt genome of H. marmoreus.
Nucleon Energy Correlators for the Color Glass Condensate
Creators: name: Liu, Hao-Yu
name: Liu, Xiaohui
name: Pan, Ji-Chen
name: Yuan, Feng
name: Zhu, Hua Xing
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We demonstrate the recently proposed nucleon energy-energy correlator (nucleon EEC) $f_{\rm EEC}(x,θ)$ can unveil the gluon saturation in the small-$x$ regime in $eA$ collisions. The novelty of this probe is that it is fully inclusive just like the deep-inelastic scattering (DIS), with no requirements of jets or hadrons, but still provides an evident portal to the small-$x$ dynamics through the shape of the $θ$-distribution. We find that the saturation prediction is significantly different from the expectation of the collinear factorization.
description: 7+3pages, 5+1 figures, to match with the published version
Information Scrambling and Entanglement Dynamics of Complex Brownian Sachdev-Ye-Kitaev Models
Creators: name: Zhang, Pengfei
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this work, we study the information scrambling and the entanglement dynamics in the complex Brownian Sachdev-Ye-Kitaev (cBSYK) models, focusing on their dependence on the charge density $n$. We first derive the effective theory for scramblons in a single cBSYK model, which gives closed-form expressions for the late-time OTOC and operator size. In particular, the result for OTOC is consistent with numerical observations in [1]. We then study the entanglement dynamics in cBSYK chains. We derive the density dependence of the entanglement velocity for both Rényi entropies and the Von Neumann entropy, with a comparison to the butterfly velocity. We further consider adding repeated measurements and derive the effective theory of the measurement induced transition which shows $U(2)_L\otimes U(2)_R$ symmetry for non-interacting models.
description: 22 pages
Interest development
Creators: name: Zhong, Yuchun
Publisher: name: OSF Registries
Year: 2023
Subjects: subject: Education
subject: interest sustainability

description: This mixed methods longitudinal study investigates how interest develops over time in sandbox game-based learning compared to teacher-led instruction. Situational and individual interest will be measured weekly during a 3-week intervention and for 2 weeks after in both game-based and teacher-led conditions using validated questionnaire scales. Quantitative analysis will be conducted to examine if interest changes differed between groups over time. Following that, focus group interviews will be conducted after the intervention to elicit insights on sustained interest. It is expected that both situational and personal interest will be more effectively triggered in game-based learning environment, and that personal interest will decline for teacher-led learning while remaining high for gameplay after the intervention. Qualitative themes will be extracted to reveal the factors that promote sustained interest. This research delineates distinct interest trajectories for experiential game-based versus teacher-led pedagogy. Expected findings include that gameplay sustains the triggering of situational interest and facilitates the gradual development of individual interest and that game-based methods could engage students' interests over time more effectively than teacher-led instruction.
Controls over experimental gravel-bed morphodynamics : the roles of coupling, form-process feedbacks and the lateral boundary
Creators: name: Booker, William Henry
Publisher: name: University of British Columbia
Year: 2023

description: The morphodynamics of rivers are controlled by their boundary conditions, form-process feedbacks, and intrinsic thresholds of stability. Various classification systems have been developed to distinguish between types of morphodynamics, such that we may separate natural kinds of channels based on their differences in process. However, the effectiveness of our existing tools is limited where distinction between process is more subtle. To address this issue, my thesis develops new methods to examine process and its spatial distribution using a series of physical experiments. First, I developed a method to distinguish between the reach averaged morphodynamics of experimental channels. Over the course of the experiment, two systems substantially diverged in their behaviour due to the difference in their degrees of freedom; the ability to adjust width. The index that was developed to demonstrate the differences between these channels indicates the nature of deformation and considers the coupling between sediment transport and the change in channel morphology. Following on from this, both aspects used in the index's calculation - sediment transport and morphologic change - have a spatial variation in coupling as the interaction between bed load and the bed surface varies. Using these, I developed a spatialised index as a virtual velocity to demonstrate quantitatively how this variation in coupling influences morphodynamics along a pool-riffle sequence. This technique allowed for the spatial assessment of the influence of bank strength treatments on emergent morphodynamics over a series of floods and highlighted the potential application of an alternate coarse grain based style of treatment. Finally, I analysed the role that channel width and confinement play in the efficiency of sediment transport using these tools. Increases in width result in increasing degrees of work done to the channel that increases the coupling between sediment transport and channel change. Similarly, decreases in confinement allow for a greater degree of self-organisation and channel stabilisation, increasing the degree of coupling between sediment transport and morphologic change.
DAMAP – der einfache Weg zum DMP
Creators: name: Stork, Christiane
Year: 2024
Subjects: Bibliothekswissenschaft
Library science
ÖFOS 2012 -- SOZIALWISSENSCHAFTEN (5) -- Medien- und Kommunikationswissenschaften (508) -- Medien- und Kommunikationswissenschaften (5080) -- Bibliothekswissenschaft (508003)
ÖFOS 2012 -- SOCIAL SCIENCES (5) -- Media and Communication Sciences (508) -- Media and Communication Sciences (5080) -- Library science (508003)
Forschungsdatenmanagement
FDM
Trainingsmaterialien
Datenmanagementplan
DMP
DAMAP
Projekt Shared RDM

description: Das Cheatsheet „DAMAP – der einfache Weg zum DMP“ gehört zu einer Serie der Trainingsmaterialien, die im Projekt „Shared RDM Services & Infrastructure“ (2023–2026) erstellt wurde.
Salminus hilarii Valenciennes 1850
Creators: name: Ota, Renata Rúbia
name: Deprá, Gabriel de Carvalho
name: Graça, Weferson Júnio da
name: Pavanelli, Carla Simone
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Characiformes
Bryconidae
Salminus
Salminus hilarii

description: Salminus hilarii Valenciennes, 1850 Fig. 6 Body elongated; greatest depth contained 3.6 to 4.1, caudal peduncle depth 9.9 to 11.8 times in SL; head length 3.6 to 3.8, predorsal distance 1.8 to 1.9, caudal peduncle length 8.6 to 8.8 in SL; snout length 3.5 to 3.8, horizontal orbital diameter 4.2 to 4.7 and least interorbital width 3.5 to 3.7 in HL. Mouth terminal; inner row of premaxilla with 9-11, outer row with 7 or 8, inner row of dentary with 30-32, outer row with 18-20 and maxilla with 30-32 teeth. Lateral line with 68-71 pored scales; transverse series above lateral line with 10 scale rows and below with 6 scale rows. Dorsal fin with 11 or 12, pectoral fin with 15-17, pelvic fin with 9 or 10, anal fin with 25-29 and caudal fin with 19 rays. Ground color silvery; dark-brown transverse band on posterior portion of caudal peduncle, extending to distal margin of median caudal-fin rays. Reddish fins (Graça, Pavanelli, 2007). Maximum standard length. 340.0 mm (Graça, Pavanelli, 2007). Distribution. Río Paraná, rio São Francisco, rio Tocantins, Amazon and río Orinoco basins.
description: Published as part of Ota, Renata Rúbia, Deprá, Gabriel de Carvalho, Graça, Weferson Júnio da & Pavanelli, Carla Simone, 2018, Peixes da planície de inundação do alto rio Paraná e áreas adjacentes: revised, annotated and updated, pp. 1-111 in Neotropical Ichthyology 16 (2) on page 25, DOI: 10.1590/1982-0224-20170094, http://zenodo.org/record/3678395
description: {"references": ["Pavanelli CS, Graca WJ, Zawadzki CH, Britski HA, Vidotti AP, Avelino GS, Verissimo S. Fishes from the Corumba Reservoir, Paranaiba River drainage, upper rio Parana basin, State of Goias, Brazil. Check List. 2007; 3 (1): 58 - 64."]}
Uniform stabilization of Boussinesq systems in critical $\mathbf{L}^q$-based Sobolev and Besov spaces by finite dimensional interior localized feedback controls
Creators: name: Lasiecka, Irena
name: Priyasad, Buddhika
name: Triggiani, Roberto
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optimization and Control (math.OC)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We consider the d-dimensional Boussinesq system defined on a sufficiently smooth bounded domain, with homogeneous boundary conditions, and subject to external sources, assumed to cause instability. The initial conditions for both fluid and heat equations are taken of low regularity. We then seek to uniformly stabilize such Boussinesq system in the vicinity of an unstable equilibrium pair, in the critical setting of correspondingly low regularity spaces, by means of explicitly constructed, feedback controls, which are localized on an arbitrarily small interior subdomain. In addition, they will be minimal in number, and of reduced dimension: more precisely, they will be of dimension $(d-1)$ for the fluid component and of dimension $1$ for the heat component. The resulting space of well-posedness and stabilization is a suitable, tight Besov space for the fluid velocity component (close to $\mathbf{L}^3(Ω$) for $ d = 3 $) and the space $L^q(Ω$) for the thermal component, $ q > d $. Thus, this paper may be viewed as an extension of \cite{LPT.1}, where the same interior localized uniform stabilization outcome was achieved by use of finite dimensional feedback controls for the Navier-Stokes equations, in the same Besov setting.
description: arXiv admin note: substantial text overlap with arXiv:2202.03262
A hierarchical equations of motion (HEOM) analog for systems with delay: illustrated on inter-cavity photon propagation
Creators: name: Fuchs, Robert
name: Richter, Marten
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Computational Physics (physics.comp-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Over the last two decades, the hierarchical equations of motion (HEOM) of Tanimura and Kubo have become the equation of motion-based tool for numerically exact calculations of system-bath problems. The HEOM is today generalized to many cases of dissipation and transfer processes through an external bath. In spatially extended photonic systems, the propagation of photons through the bath leads to retardation/delays in the coupling of quantum emitters. Here, the idea behind the HEOM derivation is generalized to the case of photon retardation and applied to the simple example of two dielectric slabs. The derived equations provide a simple reliable framework for describing retardation and may provide an alternative to path integral treatments.
Superradiant (In)stability, Greybody Radiation, and Quasinormal Modes of Rotating Black Holes in non-linear Maxwell f (R) Gravity
Creators: name: Kanzi, Sara
name: Sakallı, İzzet
name: Pourhassan, Behnam
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The research of superradiant instability in the realm of quantum gravity is a well-known topic, with many physicists and astronomers studying the potential impact it can have on gravitational waves, the structure of the universe, and spacetime itself. In this work, we investigate the superradiant (in)stability of a rotating black hole obtained from the nonlinear Maxwell $f(R)$ gravity theory. In this study, the evaluation of stability/instability is going to be based on non-existence and existence of magnetic field, when the magnetic field constant becomes $c_{4}=0$ and $c_{4}\neq 0$, respectively. The analyzes of greybody factor (GF) and quasinormal modes (QNMs) are investigated in the stationary black hole spacetime both in the absence and presence of the magnetic field parameter. To this end, we first consider the Klein-Gordon equation for the complex scalar field in the geometry of that rotating black hole. In the sequel, the obtained radial equation is reduced to a one-dimensional Schrödinger-like wave equation with an effective potential energy. The effects of the nonlinear Maxwell $f(R)$ gravity theory parameters ($q$, $c$, and $c_{4}$) on the effective potential, GFs, and QNMs are thoroughly investigated. The obtained results show that even though the factors $q$, $c$, and $c_{4}$ all affect the effective potential, this phenomena, surprisingly, is not valid for the GFs and QNMs. With the proper graphics and tables, all outputs are depicted, tabulated, and interpreted.
Design Optimization of Noise Filter using Quantum Annealer
Creators: name: Okada, Akihisa
name: Yoshida, Hiroaki
name: Kidono, Kiyosumi
name: Matsumori, Tadayoshi
name: Takeno, Takanori
name: Kadowaki, Tadashi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The use of quantum annealers in black-box optimization to obtain the desired properties of a product with a small number of trials has attracted attention. However, the application of this technique to engineering design problems is still limited. Here, we demonstrate the applicability of black-box optimization with a quantum annealer to the design of electric circuit systems, focusing on $π$-type noise filters as an example. We develop a framework that uses quantum annealing to find the optimal location of electrical components and conductor paths connecting the components, and confirm that the learning process appropriately works over a number of trials to efficiently search for a design with high performance. The results show the potential applicability of quantum annealing to design problems of electric circuit systems.
description: 6 pages, 11 figures
Asymptotics of impulse control problem with multiplicative reward
Creators: name: Jelito, Damian
name: Stettner, Łukasz
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optimization and Control (math.OC)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 93E20, 49J21, 49K21, 60J25

description: We consider a long-run impulse control problem for a generic Markov process with a multiplicative reward functional. We construct a solution to the associated Bellman equation and provide a verification result. The argument is based on the probabilistic properties of the underlying process combined with the Krein-Rutman theorem applied to the specific non-linear operator. Also, it utilises the approximation of the problem in the bounded domain and with the help of the dyadic time-grid.
description: 26 pages
title: Ποιότητα ζωής ασθενών με ρευματοειδή αρθρίτιδα
title: Quality of life of patients with rheumatoid arthritis
titleType: AlternativeTitle
Creators: name: Ρόρρη, Αναστασία
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2022
Subjects: Ποιότητα ζωής
Ρευματοειδής αρθρίτιδα
Αυτοάνοσα ρευματικά νοσήματα

description: Η (ΡΑ) είναι νόσος του ανοσοποιητικού μας συστήματος και όσοι πάσχουν από αυτήν, κατά την διάρκεια της ζωής τους, αντιμετωπίζουν περιορισμούς στην λειτουργικότητα, στην κοινωνικότητα και την καθημερινή τους ζωή. Καθώς αποτελεί μια σημαντική αιτία νοσηρότητας του γενικού πληθυσμού παγκόσμια, είναι αντικείμενο μελέτης και έρευνας για πολλούς επιστήμονες. (Γαλανόπουλος, 1995) Η ρευματοειδής αρθρίτιδα πάνω απ’ όλα είναι επώδυνη και απαιτεί πολύ κουράγιο για να αντιμετωπισθεί. Είναι διαλείπουσα, δηλαδή έχει εξάρσεις και υφέσεις και συχνά αποτελεί κύρια αιτία της απουσίας του ασθενή από την δουλειά του και από τις καθημερινές δραστηριότητες του καθώς στις φάσεις των εξάρσεων χρειάζεται πολύ ξεκούραση. Κάθε φορά μετά από μία κρίση της νόσου η επίπτωση στην κινητικότητα του ασθενούς επιδεινώνεται και αυτός είναι ο λόγος που αναγκάζει το άτομο σιγά σιγά να αποκόπτεται από την εργασία του και την καθημερινότητα του. (Χανιώτης, 2002:820). Ερευνητικά, η ρευματοειδής αρθρίτιδά μελετάται σε παγκόσμιο επίπεδο, είτε με την συσχέτιση της με άλλες παθήσεις, όπως ο σακχαρώδης διαβήτης και την εμπλοκή των φλεγμονών στην παθογένεση του διαβήτη (Tian et all 2020), είτε τις φαρμακευτικές αγωγές, τις χειρουργικές παρεμβάσεις, την μέτρηση του πόνου, την λειτουργικότητα και την αποτελεσματικότητα θεραπειών στην ρευματοειδή αρθρίτιδα. (Bombardier, Raboud, 1991). Αυτή η αφηγηματική ανασκόπηση επιδιώκει να δώσει σε ασθενείς και ιατρικό προσωπικό, μια παραπάνω γνώση για την (ΡΑ) και τις δυσκολίες, που μπορεί να εμφανιστούν και να δυσκολέψουν την καθημερινότητα και την ποιότητα ζωής, των ανθρώπων που πάσχουν από αυτήν.
Estudos de Conservação e Restauro, n. 8 (2016)
Creators: name: Estudos De Conservação E Restauro
Publisher: name: Estudos de Conservação e Restauro
Year: 2016

description: Editorial...4-9 Avaliação de riscos aplicada à conservação e restauração do patrimônio industrial móvel: o rolo compactador da escola de belas artes, Universidade Federal de Minas Gerais – Brasil...11-35 Transdisciplina: Reseña de la revista Intervención. Revista Internacional de Conservación, Restauración y Museología, 7(14), julio-diciembre 2016...119-121 Notícias...122-130 As condições de conservação das reservas museológicas: estudo internacional e nacional...36-58 O retoque de negativos de vidro. O que dizem os antigos manuais?...59-70 Antigas impregnações a óleo aplicadas no reverso de pintura sobre tela. O estudo científico dos materiais encontrados numa pintura portuguesa...71-81 O Paço de Concelho e a Torre Sineira da Igreja Matriz de Vila do Conde no século XVI: algumas questões...82-95 Quatro bustos-relicários do Mosteiro da Madre de Deus: estudo e conservação...96-117
Comparison-of-Low-Cost-Global-Positioning-System.pdf
Creators: name: Fernandez, Perry Neil
Publisher: name: figshare
Year: 2021
Subjects: subject: 70403 Fisheries Management
subject: FOS: Agriculture, forestry and fisheries

description: The current system of monitoring fishing activities to generate information to support fisheries management in the Philippines is inadequate. The high cost of the satellite-based vessel monitoring system (VMS) makes it limited to Philippines commercial fishing vessels operating in the high seas in Western and Central Pacific. This project aims to investigate the best commercial GPS data logger as an alternative to VMS for low-cost vessel monitoring in terms of accuracy, power efficiency, and price. Nine different commercial GPS data loggers (Globalsat DG-100, Canmore GT-740FL, Canmore GT-750F, Columbus v-900, Holux rcv-3000, Qstarz BT1000XT, SJ5282DL, SJ5286TH), categorised into three price groups and three different chipset groups, were tested. Data locations of several GPS data loggers were compared to a commercial VMS, and results showed that all GPS data loggers provide locations data that are very close to VMS. The position readings of the data loggers are not statistically different, except for two units. Power consumptions were statistically different among the units. Based on the three criteria, Globalsat DG-100, Canmore GT-750F, and SJ5282DL all give closest positions data to commercially available satellite-based VMS that may be acceptable for regulatory purposes in the Philippines and offer cost-effective VMS solutions for monitoring and managing both commercial and municipal fisheries in the country.
Intra- and interobserver reproducibility of second trimester ultrasound cervical length measurement in a general population
Creators: name: Baños, Núria
name: Burgos-Artizzu, Xavier P.
name: Valenzuela-Alcaraz, Brenda
name: Coronado-Gutiérrez, David
name: Perez-Moreno, Álvaro
name: Ponce, Júlia
name: Gratacós, Eduard
name: Palacio, Montse
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Hematology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: To evaluate the reproducibility of ultrasound cervical length (CL) measurement at the second trimester. A set of 565 cervical ultrasound images were collected at 19 + 0–24 + 6 weeks’ gestation. Two senior maternal–fetal specialists measured CL in each image on three occasions 2 weeks apart. In the interval between the first and following two measures, the clinicians reviewed 20 images together to agree on the criteria for measurement. Measurements were analyzed for intra- and inter-observer disagreement. The robustness of patient classification when CL measure was used with different cutoff thresholds was analyzed. Average intra-observer deviation was 2.8 mm for clinician 1 and 3.7 mm for clinician 2. Inter-observer deviation among the two clinicians was 5.2 and 3.2 mm before and after reviewing measurement criteria together. When cutoffs were used to classify as “short” cervix, disagreement ranged from 22 to 70% depending on operator and threshold used. Ultrasound CL measurements by experts showed moderate intra- and inter-observer reproducibility. The use of specific cutoffs to classify patients as high or low risk resulted in wide disagreements. The results stress the importance of training and quality assessments on considering universal screening application of CL measurement.
Spin and current transport in the robust half-metallic magnet $c$-CoFeGe
Creators: name: Chaudhary, Vikrant
name: Singh, Sapna
name: Gujjar, Deepak
name: Nautiyal, Tashi
name: Maitra, Tulika
name: Brink, Jeroen van den
name: Kandpal, Hem C.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Spintronics is an emerging form of electronics based on the electrons' spin degree of freedom for which materials with robust half-metallic ferromagnet (HMF) character are very attractive. Here we determine the structural stability, electronic, magnetic, and mechanical properties of the half-Heusler (hH) compound CoFeGe, in particular also in its cubic form. The first-principles calculations suggest that the electronic structure is robust with 100 \% spin polarization at the Fermi level under hydrostatic pressure and uni-axial strain. Both the longitudinal and Hall current polarization are calculated and the longitudinal current polarization ($P_{L}$) is found to be $>99\%$ and extremely robust under uniform pressure and uni-axial strain. The anomalous Hall conductivity (AHC) and Spin Hall conductivity (SHC) of hH cubic CoFeGe (\textit{c}-CoFeGe) are found to be $\sim -100$ S/cm and $\sim 39~\hbar/e$ S/cm, respectively. Moreover, the Curie temperature of the alloy is calculated to be $\sim$524 K with a 3 $μ_{B}$ magnetic moment. Lastly, the calculated mechanical properties indicate that \textit{c}-CoFeGe is ductile and mechanically stable with a bulk modulus of $\approx$ 154 GPa. Overall, this analysis reveals that cubic CoFeGe is a robust half-metallic ferromagnet and an interesting material for spintronic applications.
description: 8 pages, 6 figures, and 2 tables
Malicious hardware
Creators: name: Ντούσκα, Αικατερίνη
name: Ntouska, Katerina
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2022
Subjects: subject: Malicious hardware
subject: Circuits
subject: Trojan

description: Στην εποχή μας, με την ραγδαία εξέλιξη και εφαρμογή των νέων τεχνολογιών σε όλους τους τομείς της ζωής μας, η αλληλεπίδραση με τα ολοκληρωμένα κυκλώματα είναι καθημερινή. Η παρούσα διπλωματική εργασία εστιάζει και αναλύει όλες τις πτυχές του κακόβουλου υλικού και των επιθέσεων που βασίζονται στο υλικό. Αναλύουμε εν συντομία τη διαδικασία παραγωγής συστημάτων υλικού και τις ευπάθειες που μπορούν να δημιουργηθούν σε κάθε ένα από τα στάδια. Προχωρώντας, προσεγγίζουμε την κατηγοριοποίηση του κακόβουλου υλικού με δύο διαφορετικούς τρόπους, περιγράφουμε τον κύκλο ζωής του συστήματος υλικού που παρέχει αρκετές ευκαιρίες για την ενσωμάτωση ανεπιθύμητης λειτουργικότητας και το χρησιμοποιούμε για να κατηγοριοποιήσουμε τους κακόβουλους εισβολείς. Επιπλέον, περιγράφονται και αναλύονται διεξοδικά οι μηχανισμοί ανίχνευσης, εντοπισμού και πρόληψης ως αντίμετρα για την αντιμετώπιση του κινδύνου του κακόβουλου υλικού και πιο συγκεκριμένα των Δούρειων Ίππων Υλικού. Τέλος, αναφερόμαστε εν συντομία σε περιπτώσεις χρήσης κακόβουλου υλικού που χαρακτηρίζονται από συγκεκριμένους τρόπους επίθεσης.
Astyanax Baird and Girard 1854
Creators: name: Ota, Renata Rúbia
name: Deprá, Gabriel de Carvalho
name: Graça, Weferson Júnio da
name: Pavanelli, Carla Simone
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Characiformes
Characidae
Astyanax

description: Astyanax 1. A well-defined black, horizontally elongate humeral spot, overlapped by a more diffuse, vertically elongate grey stripe and followed by a second diffuse, vertically elongate grey stripe............................................. A. lacustris 1’. One or two relatively diffuse, grey to brown vertically elongate humeral spots........................................................ 2 2. One humeral spot............................................................ 3 2’. Two humeral spots......................................................... 4 3. Anal fin with 29 to 35 branched rays............. A. schubarti 3’. Anal fin with 24 to 28 branched rays...... A. aff. fasciatus 4. Anal-fin origin anterior to vertical through the end of dorsal fin.................................................................. A. biotae 4’. Anal-fin origin posterior to vertical through the end of dorsal fin.............................................................................. 5 5. Greatest body depth on vertical through the middle of pectoral fin.................................................... A. aff. paranae 5’. Greatest body depth two scales anterior to the dorsalfin origin.......................................................... A. bockmanni
description: Published as part of Ota, Renata Rúbia, Deprá, Gabriel de Carvalho, Graça, Weferson Júnio da & Pavanelli, Carla Simone, 2018, Peixes da planície de inundação do alto rio Paraná e áreas adjacentes: revised, annotated and updated, pp. 1-111 in Neotropical Ichthyology 16 (2) on page 25, DOI: 10.1590/1982-0224-20170094, http://zenodo.org/record/3678395
Entanglement structure of quantum fields through local probes
Creators: name: Torres, Bruno de S. L.
name: Wurtz, Kelly
name: Polo-Gómez, José
name: Martín-Martínez, Eduardo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a framework to study the entanglement structure of a quantum field theory inspired by the formalism of particle detectors in relativistic quantum information. This framework can in principle be used to faithfully capture entanglement in a QFT between arbitrary-shaped regions of spacetime without encountering UV divergences, bypassing many of the issues typically present in other approaches. Our results also establish the limits of the efficiency of entanglement harvesting, and may also be used to motivate an operational definition of entanglement between spacetime subregions in field theory.
description: 22 pages, 7 figures. RevTeX 4.2. V2 updated to match published version
Astyanax biotae Castro, Vari 2004
Creators: name: Ota, Renata Rúbia
name: Deprá, Gabriel de Carvalho
name: Graça, Weferson Júnio da
name: Pavanelli, Carla Simone
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Characiformes
Characidae
Astyanax
Astyanax biotae

description: Astyanax biotae Castro, Vari, 2004 Fig. 7 Body deep; greatest depth contained 2.4 to 2.9 and caudal peduncle depth 8.0 to 9.8 times in SL; head length 3.2 to 3.6, predorsal distance 1.8 to 1.9 and caudal peduncle length 10.6 to 11.2 in SL; snout length 4.1 to 4.9, horizontal orbital diameter 2.4 to 3.0 and least interorbital width 2.6 to 3.0 in HL. Mouth terminal; inner row of premaxilla with 5 teeth, outer with 4 or 5, dentary with 10-12, and maxilla with one tooth. Lateral line complete, with 33-35 pored scales; transverse series above lateral line with 6 or 7 scale rows and below with 4 or 5 scale rows. Dorsal fin with 11 rays, pectoral fin with 12 or 13, pelvic fin with 7 or 8, anal fin with 27-30, and caudal fin with 19 rays. Ground color silvery; silvery longitudinal band on flank (brown or grey in fixed specimens), from humeral blotch to median caudal-fin rays, larger on caudal peduncle, forming oval-shaped, horizontally elongated, blotch; flank scales with dark-brown border. Maximum standard length. 41.3 mm. Biological data. Feeds on arthropods, debris and seeds of vascular plants and filamentous algae (Castro, Vari, 2004a). Distribution. Upper rio Paraná basin.
description: Published as part of Ota, Renata Rúbia, Deprá, Gabriel de Carvalho, Graça, Weferson Júnio da & Pavanelli, Carla Simone, 2018, Peixes da planície de inundação do alto rio Paraná e áreas adjacentes: revised, annotated and updated, pp. 1-111 in Neotropical Ichthyology 16 (2) on page 26, DOI: 10.1590/1982-0224-20170094, http://zenodo.org/record/3678395
description: {"references": ["Castro RMC, Vari RP. Astyanax biotae, a new species of stream fish from the rio Paranapanema basin, upper rio Parana system, southeastern Brazil (Ostariophysi: Characiformes: Characidae). Proc Biol Soc Wash. 2004 a; 117 (3): 330 - 38."]}
title: Ανάπτυξη και έλεγχος τετρακόπτερου
title: Development and control of a quadcopter
titleType: AlternativeTitle
Creators: name: Σερέμελης, Σταύρος
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2022
Subjects: Τετρακόπτερο
Μη επανδρωμένα ιπτάμενα οχήματα
Unmanned aerial vehicle
UAV
Quadcopter

description: Στο πλαίσιο της συγκεκριμένης διπλωματικής εργασίας αναλύονται οι διαδικασίες που χρησιμοποιήθηκαν από το εκπονούντα της για τη σχεδίαση και την ανάπτυξη ενός τετρακόπτερου. Ιδιαίτερη αναφορά γίνεται στο δυναμικό μοντέλο του τετρακόπτερου, τα δομικά στοιχεία της αρχιτεκτονικής του, και τις διαδικασίες ελέγχου της πτητικής λειτουργίας του.
Vancomycin during delivery hospitalizations for women with group B streptococcus
Creators: name: Duffy, Cassandra R.
name: Huang, Yongmei
name: Andrikopoulou, Maria
name: Stern-Ascher, Conrad N.
name: Wright, Jason D.
name: D’Alton, Mary E.
name: Friedman, Alexander M.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Vancomycin use for intrapartum GBS prophylaxis is not well characterized. The objective of this study was to describe trends in the use of vancomycin among women undergoing vaginal delivery with group B Streptococcus (GBS) colonization. An administrative inpatient database that includes medications was analyzed to evaluate antibiotic use in women undergoing vaginal delivery hospitalizations complicated by GBS colonization from January 2006 to March 2015. Patients with other obstetric or infectious indications for antibiotics were excluded. Frequency of use of individual antibiotic agents was determined. The Cochran–Armitage test was used to assess temporal trends. An adjusted log-linear regression model accounting for demographic and hospital factors with vancomycin receipt as the outcome was performed with adjusted risk ratios (aRR) and 95% confidence intervals (CI) as the measure of effect. Hospital level variation in administration of vancomycin was also evaluated. 469,717 deliveries met inclusion criteria and were included in this analysis. Use of vancomycin increased from 0.8% of patients in 2006 to 3.8% of patients in the first quarter of 2015. Comparing 2015 to 2006 both the unadjusted (relative risk 4.89 95% CI 4.26–5.60) and adjusted (aRR 4.52 95% 3.94–5.19) models demonstrated significantly increased likelihood of vancomycin administration. In evaluating hospital level vancomycin use, variation was noted with 8.0% of centers administering vancomycin to ≥6.0% of patients. Vancomycin is becoming increasingly commonly used for intrapartum GBS prophylaxis. Further research and quality improvements initiatives are indicated to optimize intrapartum GBS antibiotic prophylaxis.
Astyanax bockmanni Vari, Castro 2007
Creators: name: Ota, Renata Rúbia
name: Deprá, Gabriel de Carvalho
name: Graça, Weferson Júnio da
name: Pavanelli, Carla Simone
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Characiformes
Characidae
Astyanax
Astyanax bockmanni

description: Astyanax bockmanni Vari, Castro, 2007 Fig. 7 Body deep; greatest depth contained 2.4 to 2.7 and caudal peduncle depth 8.7 to 9.2 times in SL; head length 4.0 to 4.1, predorsal distance 1.9 to 2.0 and caudal peduncle length 8.0 to 12.4 in SL; snout length 3.7 to 4.4, horizontal orbital diameter 2.4 to 2.5 and least interorbital width 2.8 to 2.9 in HL. Mouth terminal; inner row of premaxilla with 5 teeth, outer with 4 or 5, dentary with 9 or 10, and maxilla with 2 teeth. Lateral line complete, with 37 or 38 pored scales; transverse series above lateral line with 5½ or 6 scale rows and below with 5 or 6 scale rows. Dorsal fin with 11 or 12, pectoral fin with 15 or 16, pelvic fin with 9, anal fin with 22 or 23, and caudal fin with 19 rays. Ground color silvery; one black humeral blotch, transversely elongated, followed by another similar black humeral blotch, smaller than the first; silvery longitudinal band on flank (brown or grey in fixed specimens), from humeral blotch to median caudal-fin rays, larger on caudal peduncle, forming ovalshaped, horizontally elongated, blotch. Yellowish or reddish fins (Graça, Pavanelli, 2007). Maximum standard length. 74.2 mm (Graça, Pavanelli, 2007). Distribution. Upper rio Paraná basin.
description: Published as part of Ota, Renata Rúbia, Deprá, Gabriel de Carvalho, Graça, Weferson Júnio da & Pavanelli, Carla Simone, 2018, Peixes da planície de inundação do alto rio Paraná e áreas adjacentes: revised, annotated and updated, pp. 1-111 in Neotropical Ichthyology 16 (2) on page 26, DOI: 10.1590/1982-0224-20170094, http://zenodo.org/record/3678395
description: {"references": ["Pavanelli CS, Graca WJ, Zawadzki CH, Britski HA, Vidotti AP, Avelino GS, Verissimo S. Fishes from the Corumba Reservoir, Paranaiba River drainage, upper rio Parana basin, State of Goias, Brazil. Check List. 2007; 3 (1): 58 - 64."]}
Essays on theory and computation in economics
Creators: name: Ebrahimi Kahou, Mahdi
Publisher: name: University of British Columbia
Year: 2023

description: The first chapter: I propose a new method for solving high-dimensional dynamic programming problems and recursive competitive equilibria with a large (but finite) number of heterogeneous agents using deep learning. The curse of dimensionality is alleviated thanks to three techniques: (1) exploiting symmetry in the approximate law of motion and the policy function; (2) constructing a concentration of measure to calculate high-dimensional expectations using a single Monte Carlo draw from the distribution of idiosyncratic shocks; and (3) designing and training deep learning architectures that exploit symmetry and concentration of measure. As an application, I find a global solution of a multi-firm version of the classic Lucan and Prescott (1971) model of investment under uncertainty. First, I compare the solution against a linear-quadratic Gaussian version for benchmarking. Next, I solve the nonlinear version where no accurate or closed-form solution exists. Finally, I describe how this approach applies to a large class of models in economics. The second chapter: in the long run, we are all dead. Nonetheless, even when investigating short-run dynamics, models require boundary conditions on long-run, forward-looking behavior (e.g., transversality condition). In this chapter, in sequential setups, I show how deep learning approximations can automatically fulfill these conditions despite not directly calculating the steady state and balanced growth path. The main implication is that one can solve for transition dynamics with forward-looking agents, confident that long-run boundary conditions will implicitly discipline the short-run decisions, even converging towards the correct equilibria in cases with steady-state multiplicity. While this chapter analyzes benchmark models such as the neoclassical growth model, the results suggest deep learning may allow us to calculate accurate transition dynamics with high-dimensional state spaces, and without directly solving for long-run behavior. The third chapter: the sequential models studied in the previous chapter can be very useful to study deterministic setups and one-time shocks to economic variables. In this chapter I focus on the recursive setups. I consider the recursive version of the neoclassical growth model, which can be extended to study investment decisions under uncertainty. I show how deep learning approximations automatically fulfill these boundary conditions.
Insulin treatment of patients with gestational diabetes: does dosage play a role?
Creators: name: Koren, Ronit
name: Hochman, Yuval
name: Koren, Shlomit
name: Ziv-Baran, Tomer
name: Wiener, Yifat
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences

description: In nonpregnant patients high insulin requirements are associated with hypoglycemia and weight gain but not with improvement in glucose control. The effect of insulin requirement on maternal and neonatal outcomes in gestational diabetes mellitus (GDM) is yet unknown. We conducted a retrospective cohort study of maternal and neonatal outcomes of pregnancy according to insulin requirements in women with GDM who were followed and delivered at the Yitzhak Shamir Medical Center between 2006 and 2016. The daily insulin dose in units per body weight was divided into quartiles and analyses were performed to compare the lowest, highest, and two middle quartiles. The primary outcome was a composite of any of the following: cesarean-section (CS), preeclampsia, macrosomia and large for gestational age (LGA) birth weight, neonatal intensive care unit admission, need for phototherapy, and neonatal hypoglycemia. Women were divided according to their insulin requirements as follows: 79 (24.8%) women who needed <0.13 IU/kg/day of insulin (insulin-sensitive group), 160 (50%) women who needed 0.14–0.42 IU/kg/day of insulin (comparison-group), and the rest who needed >0.43 IU/kg/day of insulin (insulin resistant group). There were no differences in the composite outcome between the groups (64.6, 61.3, and 69.6% for the insulin sensitive-, comparison- and resistant- groups, respectively, p = .44). Women in the insulin-resistant group had higher fasting glucose levels in the first trimester (91, 98 and 102 mg/dL for women in the insulin sensitive-, comparison- and insulin-resistant groups, respectively; p = .01). Women in the insulin-sensitive group had significantly better glycemic control (fasting glucose levels ≤90 mg/dL and 1-hour and 2-hour postprandial glucose levels ≤140 mg/dL and ≤120 mg/dL for more than 80% of measurements) than those in the insulin-resistant group (70.3 versus 29.9%; p p = .03), but the rate of LGA birth weight was surprisingly higher in the insulin-sensitive group (29.5 versus 16.7%, p = .04). After controlling for confounders, women in the insulin-sensitive group had a decreased risk for CS in relation to the comparison group (OR = 0.46, 95%CI 0.23–0.9, p = .025). We found no association between insulin requirements and adverse composite outcome in women with GDM. However, those with higher insulin requirements have poorer glucose control and higher rates of CS than those with lower insulin requirements. Larger studies are needed to inquire short- and long-term outcomes of insulin requirements on fetal and maternal outcomes.
Ginzburg-Landau action and polarization current in an excitonic insulator model of electronic ferroelectricity
Creators: name: Adachi, Hiroto
name: Ikeda, Naoshi
name: Saitoh, Eiji
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In comparison to transport of spin polarization in ferromagnets, transport of electric polarization in ferroelectrics remains less explored. Taking an excitonic insulator model of electronic ferroelectricity as a prototypical example, we theoretically investigate the low-energy dynamics and transport of electric polarization by microscopically constructing the Ginzburg-Landau action. We show that, because of the scalar nature of the excitonic order parameter, only the longitudinal fluctuations are relevant to the transport of electric polarization. We also formulate the electric polarization diffusion equation, in which the electric-polarization current is defined purely electronically without recourse to the lattice degrees of freedom.
description: 11 pages, 4 figures
title: Ανάπτυξη ρομποτικού οχήματος καθοδήγησης ατόμων με προβλήματα όρασης
title: Development of a robotic vehicle for the guidance of people with ith visual impairments
titleType: AlternativeTitle
Creators: name: Σακελλάρη, Γιώργο
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2022
Subjects: Ρομποτικό όχημα
Αισθητήρες
Γλώσσες προγραμματισμού
Ρομποτικές εφαρμογές
Arduino
Αποφυγή εμποδίων

description: Η συγκεκριμένη διπλωματική εργασία έχει ως σκοπό την ανάπτυξη ενός ρομποτικού οχήματος για την καθοδήγηση ατόμων με προβλήματα όρασης. Αρχικά, αναλύεται το θεωρητικό κομμάτι του ρομποτικού κλάδου. Ειδικότερα, γίνεται αναφορά στην ιστορική εξέλιξη, τον προγραμματισμό και τις εφαρμογές της ρομποτικής. Στην συνέχεια, περιγράφεται ένα θεωρητικό υπόβαθρο σχετικά με το hardware αλλά και το software των Arduino, τις ρυθμίσεις τους, τις λειτουργίες και τις δυνατότητες που διαθέτουν μιας και στην συγκεκριμένη εφαρμογή ο μικροελεγκτής που χρησιμοποιήθηκε είναι το Arduino Uno. Έπειτα, αναλύονται τα υλικά της κατασκευής αλλά και τα εργαλεία που χρησιμοποιήθηκαν. Ακολουθούν τα βήματα με τα οποία στήθηκε η κατασκευή και περιγράφεται η λειτουργία του κάθε εξαρτήματος αλλά και ο ρόλος του για την συγκεκριμένη εφαρμογή. Ύστερα, αναλύεται βήμα βήμα η σκέψη με την οποία πρέπει το όχημα να ακολουθεί, ούτως ώστε να είναι ευκολότερος ο προγραμματισμός του μικροεπεξεργαστή ο οποίος και παρατίθεται σε συγκεκριμένο κεφάλαιο με αντίστοιχα σχόλια για να γίνεται κατανοητός ο τρόπος με τον οποίο λειτουργεί. Τέλος, γίνεται μία σύνοψη της διπλωματικής εργασίας υπογραμμίζοντας προβλήματα τα οποία παρουσιάστηκαν, τονίζονται μελλοντικές αναβαθμίσεις που μπορούν να προστεθούν στην παρούσα διπλωματική για την βελτίωση των δυνατοτήτων του οχήματος.