cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Validating the Short Version of the Multidimensional Emotional Competence Questionnaire
Creators: name: Gerbeth, Sebastian
name: Stamouli, Elena
Publisher: name: Universität Regensburg
Year: 2023
Subjects: subject: emotional competence, validity, test–retest reliability, exploratory structural equation modelling, measurement invariance
subject: 370 Erziehung, Schul- und Bildungswesen

description: The short version of the Multidimensional Emotional Competence Questionnaire (MECQ-s) is a competence-based questionnaire with a multidimensional framework assessing emotional competence. It consists of 32 items divided into 11 factors representing four dimensions: perception of one’s own emotions, perception others’ emotions, emotional expressivity, and emotionalmanagement. Three studies (Ntotal = 1,333) were conducted to validate the MECQ-s. Overall, reliability estimates were good (α = .72–.80 and ω = .71–.79). The results of confirmatory factor analysis (CFA) and exploratory structural equation modelling (ESEM) corroborated the multidimensional structure of the MECQ-s and proved to be satisfactory. Correlations of the MECQ-s with scales of experiencing emotions provide evidence for convergent validity. A nomological network of measures including the Big Five personality, self regulation, and self-efficacy indicates that the MECQ-s proved good nomological and discriminant validity. The results for measurement invariance and test–retest reliability were satisfactory. The MECQ-s proved to have satisfactory psychometrics and can be used to evaluate emotional competence.
The Maximal Subgroups of the Exceptional Groups $F_4(q)$, $E_6(q)$ and ${}^2E_6(q)$ and Related Almost Simple Groups
Creators: name: Craven, David A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20E28, 20G40, 20D06

description: This article produces a complete list of all maximal subgroups of the finite simple groups of type $F_4$, $E_6$ and twisted $E_6$ over all finite fields. Along the way, we determine the collection of Lie primitive almost simple subgroups of the corresponding algebraic groups. We give the stabilizers under the actions of outer automorphisms, from which one can obtain complete information about the maximal subgroups of all almost simple groups with socle one of these groups. We also provide a new maximal subgroup of ${}^2\!F_4(8)$, correcting the maximal subgroups for that group from the list of Malle. This provides the first new exceptional groups of Lie type to have their maximal subgroups enumerated for three decades. The techniques are a mixture of algebraic groups, representation theory, computational algebra, and use of the trilinear form on the $27$-dimensional minimal module for $E_6$. We provide a collection of auxiliary Magma files that prove the author's computational claims, yielding existence and the number of conjugacy classes of all maximal subgroups mentioned in the text.
description: 73 pages
Virtual Multicrossings and Petal Diagrams for Virtual Knots and Links
Creators: name: Adams, Colin
name: Even-Zohar, Chaim
name: Greenberg, Jonah
name: Kaufman, Reuben
name: Lee, David
name: Li, Darin
name: Ping, Dustin
name: Sandstrom, Theodore
name: Wang, Xiwen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57K12

description: Multicrossings, which have previously been defined for classical knots and links, are extended to virtual knots and links. In particular, petal diagrams are shown to exist for all virtual knots.
description: 19 pages, 18 figures
Testing identity of collections of quantum states: sample complexity analysis
Creators: name: Fanizza, Marco
name: Salvia, Raffaele
name: Giovannetti, Vittorio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We study the problem of testing identity of a collection of unknown quantum states given sample access to this collection, each state appearing with some known probability. We show that for a collection of $d$-dimensional quantum states of cardinality $N$, the sample complexity is $O(\sqrt{N}d/ε^2)$, {with a matching lower bound, up to a multiplicative constant}. The test is obtained by estimating the mean squared Hilbert-Schmidt distance between the states, thanks to a suitable generalization of the estimator of the Hilbert-Schmidt distance between two unknown states by Bădescu, O'Donnell, and Wright (https://dl.acm.org/doi/10.1145/3313276.3316344).
description: 23+6 pages, 1 figure
Performance Comparison Between A Simple Full-Duplex Multi-Antenna Relay And A Passive Reflecting Intelligent Surface
Creators: name: Bazrafkan, Armin
name: Poposka, Marija
name: Hadzi-Velkov, Zoran
name: Popovski, Petar
name: Zlatanov, Nikola
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this paper, we propose to investigate a single RF chain multi-antenna full-duplex (FD) relay built with $b$-bit analog phase shifters and passive self-interference cancellation. Next, assuming only passive self-interference cancellation at the FD relay, we derive the achievable data rate of a system comprised of a source, the proposed FD relay, and a destination. We then compare the achievable data rate of the proposed FD relaying system with the achievable data rate of the same system but with the FD relay replaced by an ideal passive RIS. Our results show that the proposed relaying system with 2-bit quantized analog phase shifters significantly outperforms the RIS-assisted system. In fact, the performance gains are so large, at least for small to intermediate numbers of antenna elements, that we believe it makes this result of interest to the wireless community. The proposed FD relay can also be built with reconfigurable holographic surfaces, one surface for the transmit-side and one for the receive-side. For such a scenario, we derive the energy efficiency of the relay-assisted system and compare it with the RIS-assisted system. Our numerical results show that the energy efficiency of the relay-assisted system built with reconfigurable holographic surfaces is significantly higher than the energy efficiency of the RIS-assisted system. Intuitively, the RIS system is at a disadvantage since there the total transmit power $P_T$ is used entirely by the source, whereas in the FD relaying system the total transmit power $P_T$ is shared by the source and the FD relay in addition to the noise-cleansing process performed by the decode-and-forwarding at the FD relay.
Joint IMOTHEP / CAJU workshop on Hybrid Electric Propulsion - IMOTHEP-2
Creators: name: Novelli, Philippe
Publisher: name: Zenodo
Year: 2023
Subjects: IMOTHEP
aviation
greenaviation
H2020transport
horizoneurope
cinea
caju
EU
climatechange
hep

description: Presentation at the Joint IMOTHEP / CAJU workshop on Hybrid Electric Propulsion (HEP) at Eurocontrol in Brussels (B) on 29 & 30 November 2023.
ความเป็นไปได้ในวัตถุประสงค์ร่วมระหว่างพื้นที่ทางสถาปัตยกรรมของการควบคุมและการบำบัด
Creators: name: ณัฏฐพงศ์ จันทร์วัฒนะ
Publisher: name: คณะสถาปัตยกรรมศาสตร์
Year: 2023
Subjects: เรือนจำ
โรงพยาบาล
วัตถุประสงค์
การควบคุม
การบำบัด

description: วารสาร สิ่งแวดล้อมสรรค์สร้างวินิจฉัย (Built Environment Inquiry BEI), 22, 2, 87-105
พัฒนาการของรูปสัณฐาน และองค์ประกอบของเมืองเด่นชัย จังหวัดแพร่
Creators: name: จิรเดช ช่วงชัย
Publisher: name: คณะสถาปัตยกรรมศาสตร์
Year: 2023
Subjects: แพร่
เด่นชัย
พัฒนาการ
องค์ประกอบของเมือง
รูปสัญฐานเมือง
รถไฟสายเหนือ

description: วารสาร สิ่งแวดล้อมสรรค์สร้างวินิจฉัย (Built Environment Inquiry BEI), 22, 2, 107-126
Quantum sets of the multicolored-graph approach to contextuality
Creators: name: Vandré, Lina
name: Cunha, Marcelo Terra
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The CHSH inequalities are the most famous examples of Bell inequalities. Cabello, Severini, and Winter (CSW) came up with a graph approach to noncontextuality inequalities, which connects some graph-theoretic concepts to quantum and classical correlations. For example, the theta body of the exclusivity graph can be associated with the set of correlations achieved by quantum theory. Following the CSW approach, one may think that the theta body of the CHSH graph, is equal to the quantum set of the CHSH Bell inequality, but is this really true? All assumptions about the CHSH inequalities come from Bell scenarios, while CSW approach only demands the exclusivity structure of a non-contextuality (NC) scenario. To deal with the extra structure related to the presence of different players in a Bell scenario like CHSH, the colored-graph approach was introduced. Does it make any difference to think about CHSH as a Bell scenario or a more general NC scenario? The Bell CHSH inequality is represented by a bicolored graph and the NC CHSH inequality by a simple graph, which is the shadow of the colored graph. In general, we have that the theta body of the colored graph is a subset of the theta body of its shadow graph in the same way that the Lovàsz number, which corresponds to the quantum bound, of the simple graph is greater than or equal to the Lovàsz number of the colored graph. In the case of the CHSH inequality, we have that the Lovàsz numbers are equal. Does this accident also hold for the corresponding quantum sets? Is it true that the theta bodies are equal, which would mean that every correlation reached by quantum theory applied to the CHSH NC scenario could also be obtained at the in principle more restrictive CHSH Bell scenario? In this paper our answer to such a question is negativ. This implies that there are quantum correlations which can not be obtained under Bell restrictions.
description: v5: Some minor improvements added
Modifying an existing Convolutional Neural Network to predict Total Intracranial Volume using T1w images
Creators: name: Druska, Oskar
name: Kadelka, Tobias
Publisher: name: Forschungzentrum Jülich
Year: 2023

description: Course work, FH Aachen University of Applied Sciences, 2023; 27 pages (2023). = Course work, FH Aachen University of Applied Sciences, 2023
description: Neuroimaging has become an essential part in diagnosing and treating neurological diseases.Statistics such as sex, age, and dexterity can be asked for by medical staff during consultation. Biological markers or medical information such as total intracranial volume (colloq.: brain volume; TIV) or absolute and relative amount of grey/white matter have to be computed by usually timeconsuming calculations.It is of both patient’s and medical staff’s interest to have results as soon as possible after collecting data from magnetic resonsance imaging (MRI), a type of imaging procedure.Machine Learning provides statistical tools to omit classical time-consuming processing and make predictions about those biological markers based on previously analyzed brain images. This allows faster estimates and enables timely discussion and diagnosis with and of the patient after examination.Especially in emergency situations this can provide doctors with required information and allows them to start treatment while the patient is still on-site, if necessary.There have been previous efforts on building a Convolutional Neural Network (CNN) that is able to predict brainage on a given T1-weighted image. T1w images are a type of neuroimaging data.This thesis will describe modifications done to the given CNN ’Simple Fully Convolutional Network’ (SFCN), in order to predict TIV using the same T1w image of the brain as input.It will furhter explain various Machine Learning concepts and the SFCN’s implementation as well as the training and evaluation functions used as the foundation for this appliance.This modification is done by linear scaling the given TIV values used for back- propagation into the space the SFCN has previously been trained and applied on, in this case the age range of [42, 82]. This has been implemented into the code of SFCN.After modifying, the model has been trained for 10 epochs using 1370 T1w brain images provided by the Amsterdam Open MRI Collection (AOMIC)Using the Kullback-Leibler divergence as a measure of loss, the model shows a training loss of 2.46 after 1 epoch and 1.98 after 10 epochs.Its validation loss initially starts at 3.4 while ending at 3.45 after 10 epochs. The validation loss is minimal after 2 epochs with a KL-divergence of 2.7.
The structure of Frobenius kernels for automorphism group schemes
Creators: name: Schröer, Stefan
name: Tziolas, Nikolaos
Publisher: name: arXiv
Year: 2021
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14L15, 14J50, 14G17, 14J29, 17B50, 13N15

description: We establish structure results for Frobenius kernels of automorphism group schemes for surfaces of general type in positive characteristics. It turns out that there are surprisingly few possibilities. This relies on properties of the famous Witt algebra, which is a simple Lie algebra without finite-dimensional counterpart over the complex numbers, together with is twisted forms. The result actually holds true for arbitrary proper integral schemes under the assumption that the Frobenius kernel has large isotropy group at the generic point. This property is measured by a new numerical invariant called the foliation rank.
description: 42 pages, bounds in Theorem 13.2 improved, discussion of Raynaud surfaces and Tango curves in Section 14 included, otherwise minor changes, to appear in Algebra Number Theory
Künstliche Intelligenz in Bibliotheken und der Hype um Large Language Models – trojanische Sau oder willkommenes Arbeitspferd?
Creators: name: Kasprzik, Anna
Publisher: name: Zenodo
Year: 2024

description: Mit dem Aufkommen von Anwendungen wie ChatGPT ist der Hype um die Künstliche Intelligenz in der Öffentlichkeit in allerjüngster Zeit erneut angefacht worden. Der letzte sogenannte KI-Winter ist jedoch bereits seit 2012 vorbei, und seither sind auch im Open-Source-Bereich eine Fülle an implementierten Machine-Learning-Methoden entstanden, die tatsächlich einsetzbar sind – auch und gerade an Bibliotheken.

Ein Beispiel: Die ZBW – Leibniz-Informationszentrum Wirtschaft betreibt seit 2016 eigene angewandte Forschung im Bereich Machine Learning mit dem Zweck, praktikable Lösungen für eine automatisierte oder maschinell unterstützte Inhaltserschließung zu entwickeln. 2020 begann ein Team an der ZBW die Konzeption und Implementierung einer Softwarearchitektur, die es ermöglichte, diese prototypischen Lösungen in einen produktiven Dienst zu überführen und mit den bestehenden Nachweis- und Informationssystemen zu verzahnen. Sowohl die angewandte Forschung als auch die für dieses Vorhaben („AutoSE“) notwendige Softwareentwicklung sind direkt im Bibliotheksbereich der ZBW angesiedelt, werden kontinuierlich anhand des State of the Art vorangetrieben und profitieren von einem engen Austausch mit den Verantwortlichen für die intellektuelle Inhaltserschließung. Der produktive Dienst läuft seit Mitte 2021 und hat seither bereits über 1,6 Mio. Metadatensätze verschlagwortet. Aus diesem Praxisbeispiel lassen sich einige notwendige Bedingungen ableiten, um Machine-Learning-Lösungen überhaupt erfolgreich an einer Institution für die Inhaltserschließung einsetzen zu können.

Mit Blick auf die rasante Entwicklung im Bereich der Künstlichen Intelligenz in den letzten Jahren stellen sich allerdings eine Reihe spannender Fragen und Herausforderungen: Werden Large Language Models (LLMs) die Inhaltserschließung – auch die automatisierte – obsolet machen? Wird ChatGPT die Suche obsolet machen, wie wir sie kennen? Werden damit Metadaten insgesamt obsolet werden? Oder bietet sich gerade jetzt eine einmalige Chance, Inhaltserschließung und Suche neu zu denken und unsere Metadaten in eine Form zu überführen, in der sie für die neuen Modellen von unschätzbarem Wert sein können?
title: „Es wird ein risikoreiches Jahr“
title: Ein Gespräch über die wirtschaftspolitischen Herausforderungen in den Vereinigten Staaten, über Mindestlöhne, Arbeitslosengeld, Inflationsgefahr, Bildung und Rassismus
titleType: Subtitle
Creators: name: Burda, Michael
Publisher: name: Humboldt-Universität zu Berlin
Year: 2021
Subjects: subject: 330 Wirtschaft

description: Dieser Beitrag ist mit Zustimmung des Rechteinhabers (De Gruyter) frei zugänglich.
Is Channel Estimation Necessary to Select Phase-Shifts for RIS-Assisted Massive MIMO?
Creators: name: Demir, Özlem Tuğfe
name: Björnson, Emil
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Reconfigurable intelligent surfaces (RISs) consist of many passive elements of metamaterials whose impedance can be controllable to change the characteristics of wireless signals impinging on them. Channel estimation is a critical task when it comes to the control of a large RIS when having a channel with a large number of multipath components. In this paper, we derive Bayesian channel estimators for two RIS-assisted massive multiple-input multiple-output (MIMO) configurations: i) the short-term RIS configuration based on the instantaneous channel estimates; ii) the long-term RIS configuration based on the channel statistics. The proposed methods exploit spatial correlation characteristics at both the base station and the planar RISs, and other statistical characteristics of multi-specular fading in a mobile environment. Moreover, a novel heuristic for phase-shift selection at the RISs is developed. A computationally efficient fixed-point algorithm, which solves the max-min fairness power control optimally, is proposed. Simulation results demonstrate that the proposed uplink RIS-aided framework improves the spectral efficiency of the cell-edge mobile user equipments substantially in comparison to a conventional single-cell massive MIMO system. The impact of several channel effects are studied to gain insight about when the channel estimation, i.e., the short-term configuration, is preferable in comparison to the long-term RIS configuration to boost the spectral efficiency.
description: Published in IEEE Transactions on Wireless Communications, vol. 21, no. 11, November 2022
title: Semi‐Synthetic Sialic Acid Probes for Challenging the Substrate Promiscuity of Enzymes in the Sialoconjugation Pathway
Creators: name: Mertsch, Alexander
name: Poschenrieder, Silvan
name: Fessner, Wolf‐Dieter
Publisher: name: Wiley-VCH
Year: 2024

description: A series of unusual sialic acid analogs were prepared using a semi‐synthetic strategy. Truncation of natural N‐acetylneuraminic acid was followed by diastereoselective carbon backbone reconstruction using Barbier‐type carboligations as well as different functional group interconversions, which provided access to a variety of functional motifs in the terminal carbon backbone, including examples of saturated and unsaturated, linear and branched alkyl chains, partially deoxygenated sialic acids, sialic diacids and a first truncated legionaminic acid analog. The synthetic sialic acid probes were studied for nucleotide activation by the CMP‐sialic acid synthetase from Neisseria meningitidis using a universal pH‐shift assay for kinetic analysis. One‐pot enzymatic nucleotide activation and sialyltransfer to lactose was performed using a selection of five probes together with an engineered α2,3‐sialyltransferase from Photobacterium phosphoreum to furnish five new‐to‐nature analogs of the GM3 trisaccharide, which were finally utilized to test the substrate tolerance of two bacterial sialidases. The obtained set of sialic acid analogs and neo‐sialocojugates provides interesting opportunities for further glycobiology studies.
Model-independent constraints on clustering and growth of cosmic structures from BOSS DR12 galaxies in harmonic space
Creators: name: Tanidis, Konstantinos
name: Camera, Stefano
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a new, model-independent measurement of the clustering amplitude of galaxies and the growth of cosmic large-scale structures from the Baryon Oscillation Spectroscopic Survey (BOSS) 12th data release (DR12). This is achieved by generalising harmonic-space power spectra for galaxy clustering to measure separately the magnitudes of the density and the redshift-space distortion terms, respectively related to the clustering amplitude of structures, $bσ_8(z)$, and their growth, $fσ_8(z)$. We adopt a tomographic approach with 15 redshift bins in $z\in[0.15,0.67]$. We restrict our analysis to strictly linear scales, implementing a redshift-dependent maximum multipole for each bin. The measurements do not appear to suffer from systematic effects and show excellent agreement with the theoretical predictions from the Planck cosmic microwave background analysis assuming a $Λ$CDM cosmology. Our results also agree with previous analyses by the BOSS collaboration. Furthermore, our method provides the community with a new tool for data analyses of the cosmic large-scale structure complementary to state-of-the-art approaches in configuration or Fourier space. Amongst its merits, we list: it being more agnostic with respect to the underlying cosmological model; its roots in a well-defined and gauge-invariant observable; the possibility to account naturally for wide-angle effects and even relativistic corrections on ultra-large scales; and the capability to perform an almost arbitrarily fine redshift binning with little computational effort. These aspects are all the more relevant for the oncoming generation of cosmological experiments such as Euclid, the Dark Energy Spectroscopic Instrument (DESI), the Legacy Survey of Space and Time (LSST), and the SKA Project.
description: 14 pages, 8 figures, 3 tables. Version matching publication at journal
Pseudo-Anosov homeomorphisms of punctured non-orientable surfaces with small stretch factor
Creators: name: Khan, Sayantan
name: Partin, Caleb
name: Winarski, Rebecca R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 37E30

description: We prove that in the non-orientable setting, the minimal stretch factor of a pseudo-Anosov homeomorphism of a surface of genus $g$ with a fixed number of punctures is asymptotically on the order of $\frac{1}{g}$. Our result adapts the work of Yazdi to non-orientable surfaces. We include the details of Thurston's theory of fibered faces for non-orientable 3-manifolds.
description: Accepted to Algebraic and Geometric Topology. Statement (1) on page 11 is revised, typos corrected
TASHKILOTDA XODIMLARNING POTENSIALINI BOSHQARISHNING ZAMONAVIY USULLARI
Creators: name: Asatullayev, Ja'farbek
Publisher: name: Zenodo
Year: 2024

description: Ushbu maqolada korxona va tashkilotlarda ishchi xodimlarning potensialini boshqarish masalalari o‘rganilgan. Korxona va tashkilotlarda ish faoliyatining asosiy yutug‘i ishchi xodimlar hisoblanadi. Mana shu omillarni inobatga olgan holda maqolada ishchi xodimlarning potensialini boshqarishning bir nechta usullari  tahlil etilgan.
LIMDD: A Decision Diagram for Simulation of Quantum Computing Including Stabilizer States
Creators: name: Vinkhuijzen, Lieuwe
name: Coopmans, Tim
name: Elkouss, David
name: Dunjko, Vedran
name: Laarman, Alfons
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: E.1

description: Efficient methods for the representation and simulation of quantum states and quantum operations are crucial for the optimization of quantum circuits. Decision diagrams (DDs), a well-studied data structure originally used to represent Boolean functions, have proven capable of capturing relevant aspects of quantum systems, but their limits are not well understood. In this work, we investigate and bridge the gap between existing DD-based structures and the stabilizer formalism, an important tool for simulating quantum circuits in the tractable regime. We first show that although DDs were suggested to succinctly represent important quantum states, they actually require exponential space for certain stabilizer states. To remedy this, we introduce a more powerful decision diagram variant, called Local Invertible Map-DD (LIMDD). We prove that the set of quantum states represented by poly-sized LIMDDs strictly contains the union of stabilizer states and other decision diagram variants. Finally, there exist circuits which LIMDDs can efficiently simulate, while their output states cannot be succinctly represented by two state-of-the-art simulation paradigms: the stabilizer decomposition techniques for Clifford + $T$ circuits and Matrix-Product States. By uniting two successful approaches, LIMDDs thus pave the way for fundamentally more powerful solutions for simulation and analysis of quantum computing.
Integral points in orbits in characteristic $p$
Creators: name: Carney, Alexander
name: Hindes, Wade
name: Tucker, Thomas J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Number Theory (math.NT)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: Primary 37P15, Secondary 11G50, 11R32, 14G25, 37P05, 37P30

description: We prove a characteristic $p$ version of a theorem of Silverman on integral points in orbits over number fields and establish a primitive prime divisor theorem for polynomials in this setting. We provide some applications of these results, including a finite index theorem for arboreal representations coming from quadratic polynomials over function fields of odd characteristic.
description: 19 pages
Diseño web adaptable y accesibilidad en los portales BVS
Creators: name: BIREME/OPS/OMS
Publisher: name: Zenodo
Year: 2022
Subjects: Diseño web adaptable y accesibilidad en los portales

description: XVI Reunión - Diseño web adaptable y accesibilidad en los portales BVS 26/Octubre
description: {"references": ["https://red.bvsalud.org/es/fortalecimiento-de-las-redes-de-informacion-en-salud-en-alc/reuniones-de-coordinacion-bvs-y-lilacs/"]}
Unchaining surgery, branched covers, and pencils on elliptic surfaces
Creators: name: Fuller, Terry
Publisher: name: arXiv
Year: 2021
Subjects: subject: Geometric Topology (math.GT)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics

description: We show that every member of an infinite family of symplectic manifolds constructed by R. Inanc Baykur, Kenta Hayano, and Naoyuki Monden (arXiv:1903:02906) is diffeomorphic to an elliptic surface. As a result: (1) the symplectic Calabi-Yau 4-manifolds among their family are diffeomorphic to the standard K3 surface; (2) each elliptic surface E(n) admits a genus g Lefschetz pencil, for all g greater than or equal to n; and (3) each elliptic surface E(n) blown up once admits a pair of inequivalent genus g Lefschetz pencils, for all g greater than or equal to n.
description: 24 pages, 32 figures
RIFLE: Imputation and Robust Inference from Low Order Marginals
Creators: name: Baharlouei, Sina
name: Ogudu, Kelechi
name: Suen, Sze-chuan
name: Razaviyayn, Meisam
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Mathematical Software (cs.MS)
subject: FOS: Computer and information sciences

description: The ubiquity of missing values in real-world datasets poses a challenge for statistical inference and can prevent similar datasets from being analyzed in the same study, precluding many existing datasets from being used for new analyses. While an extensive collection of packages and algorithms have been developed for data imputation, the overwhelming majority perform poorly if there are many missing values and low sample sizes, which are unfortunately common characteristics in empirical data. Such low-accuracy estimations adversely affect the performance of downstream statistical models. We develop a statistical inference framework for regression and classification in the presence of missing data without imputation. Our framework, RIFLE (Robust InFerence via Low-order moment Estimations), estimates low-order moments of the underlying data distribution with corresponding confidence intervals to learn a distributionally robust model. We specialize our framework to linear regression and normal discriminant analysis, and we provide convergence and performance guarantees. This framework can also be adapted to impute missing data. In numerical experiments, we compare RIFLE to several state-of-the-art approaches (including MICE, Amelia, MissForest, KNN-imputer, MIDA, and Mean Imputer) for imputation and inference in the presence of missing values. Our experiments demonstrate that RIFLE outperforms other benchmark algorithms when the percentage of missing values is high and/or when the number of data points is relatively small. RIFLE is publicly available at https://github.com/optimization-for-data-driven-science/RIFLE.
description: 36 pages, 11 figures
Torque Control (DTC) Strategy: 25 Years Success Story of AC Motor Control Technique-Slides
Creators: Mohamed Ahmed Azab
Publisher: name: IEEE
Year: 2024

PELS Webinar Slides

Abstract: The Webinar aims to provide a comprehensive overview of the DTC of AC motors as one of the most successful motor control techniques that has proved its effectiveness in many industrial applications during the last two decades. The Webinar will cover the following points: 1- History of DTC and pioneer contributors. 2- Basic concepts and methodology of flux and torque control. 3- DTC scheme with four-switch three-phase inverter (reduced switch count inverter). 4- Modern applications of DTC. 5- Development and commonly used educational tools for undergraduate and postgraduate students.
Modeling techniques and model-based control design applied to power electronics converters-Slides
Creators: Hadi Kanaan
Publisher: name: IEEE
Year: 2024

PELS Webinar Slides

Abstract: Power Electronics devices are becoming more and more required in nowadays applications for they ability to ensure energy control and adaptation. The applications cover the entire range of power, going from small power levels as in power supplies and small battery chargers to high power levels such as HVDC transmission systems, renewable energy fed microgrids and electric trains. In order to control these devices and enhance their performance, an accurate mathematical model of these systems is necessary to develop. Several modelling techniques exit and will be presented. The modeling allows having a digital representation of the converter that would help for real-time simulations, and for testing and assessing its dynamic performance before the final implementation phase. In addition, model-based controllers can be designed to ensure a desired behavior depending on the considered application. Several case studies will be presented, going from power factor correction to grid-connection of renewables.
title: Access to digital finance
title: equity crowdfunding across countries and platforms
titleType: Subtitle
Creators: name: Estrin, Saul
name: Khavul, Susanna
name: Kritikos, Alexander
name: Löher, Jonas
Publisher: name: Universität Potsdam
Year: 2024
Subjects: subject: 330 Wirtschaft

description: Financing entrepreneurship spurs innovation and economic growth. Digital financial platforms that crowdfund equity for entrepreneurs have emerged globally, yet they remain poorly understood. We model equity crowdfunding in terms of the relationship between the number of investors and the amount of money raised per pitch. We examine heterogeneity in the average amount raised per pitch that is associated with differences across three countries and seven platforms. Using a novel dataset of successful fundraising on the most prominent platforms in the UK, Germany, and the USA, we find the underlying relationship between the number of investors and the amount of money raised for entrepreneurs is loglinear, with a coefficient less than one and concave to the origin. We identify significant variation in the average amount invested in each pitch across countries and platforms. Our findings have implications for market actors as well as regulators who set competitive frameworks.
description: CEPA Discussion Papers; 72
Identifiability of Chemical Reaction Networks with Intrinsic and Extrinsic Noise from Stationary Distributions
Creators: name: Grunberg, Theodore W.
name: Del Vecchio, Domitilla
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Many biological systems can be modeled as a chemical reaction network with unknown parameters. Data available to identify these parameters are often in the form of a stationary distribution, such as that obtained from measurements of a cell population. In this work, we introduce a framework for analyzing the identifiability of the reaction rate coefficients of chemical reaction networks from stationary distribution data. Working with the linear noise approximation, which is a diffusive approximation to the chemical master equation, we give a computational procedure to certify global identifiability based on Hilbert's Nullstellensatz. We present a variety of examples that show the applicability of our method to chemical reaction networks of interest in systems and synthetic biology, including discrimination between possible molecular mechanisms for the interaction between biochemical species.
description: 27 pages, 1 figure, 1 table. The extrinsic noise section is revised, and minor edits have been made throughout
Ideal Quantum Tele-amplification up to a Selected Energy Cut-off using Linear Optics
Creators: name: Guanzon, Joshua J.
name: Winnel, Matthew S.
name: Lund, Austin P.
name: Ralph, Timothy C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We introduce a linear optical technique that can implement ideal quantum tele-amplification up to the $n^\mathrm{th}$ Fock state, where $n$ can be any positive integer. Here tele-amplification consists of both quantum teleportation and noiseless linear amplification (NLA). This simple protocol consists of a beam-splitter and an $(n+1)$-splitter, with $n$ ancillary photons and detection of $n$ photons. For a given target fidelity, our technique improves success probability and physical resource costs by orders of magnitude over current alternative teleportation and NLA schemes. We show how this protocol can also be used as a loss-tolerant quantum relay for entanglement distribution and distillation.
description: 6 pages (main) + 16 pages (supplementary), 5 figures (main) + 11 figures (supplementary). Main change is the addition of a new section describing how our scheme still works well given experimental imperfections + additional success probability paragraph
Elaboro de iogurte com adição de geleia de casca de uva: Análises físico-químicas e sensoriais
Creators: name: Padilha, Vinicius
Publisher: name: figshare
Year: 2023
Subjects: Food chemistry and food sensory science
Food technology

description: Com a produção de vinhos sucos e derivados de uva é gerado uma quantidade considerável de resíduos que fica aderida uma certa quantidade de polpa contendo, tendo um potencial de se aproveitar para elaborar subprodutos. O presente trabalho tem como objetivo desenvolver uma geleia com a casca da uva da cultivar Isabel Precoce e um iogurte e adicionar a geleia ao mesmo em uma proporção de 10% e 15% e realizar análise de pH, Acidez e Análise sensorial. A partir dos resultados busca-se verificar a intenção de consumo e aceitabilidade de um novo produto com potencial de venda e benefícios nutricionais. Teve-se como objetivo desenvolver uma bebida láctea com adição de geleia de casca de uva que tenha a aceitação dos consumidores, foi testado o iogurte com as concentrações de 10% e 15% de geleia. A equipe foi composta por 60 provadores não treinados, os quais apresentavam a faixa etária entre 15 a 60 anos, envolvendo alunos e servidores da Universidade Tuiuti do Paraná localizada em Curitiba. Se concluiu aceito todos os atributos apresentados aroma, sabor, textura e aparência geral, os quais apresentaram índice de aceitação superior a 70%, o teste de intenção de consumo resultou em 44,62% dos provadores consumiriam a amostra com 15% de geleia e a mesma obteve 61,54% de preferência entre os participantes da pesquisa. Palavras-chave: Iogurte, análise Sensorial, Casca de uva.
Implementation evaluation of an Irish secondary-level whole school programme: a qualitative inquiry
Creators: name: Mchale, Fiona
name: NG, KWOK
name: Scanlon, Dylan
name: Cooper, Jemima
name: Grady, Caera
name: Norton, Catherine
name: O’Shea, Donal
name: WOODS, CATHERINE
Publisher: name: University of Limerick
Year: 2023
Subjects: Sports science and exercise

description: Whole-of-school programmes (WSPs) are recommended to promote physical activity for adolescents. The Active School Flag (ASF) programme for secondary-level schools is one such WSP. Due to the difficulties of incorporating WSPs into the complex school system, there is a risk of poor implementation. The monitoring of unanticipated influences can help to understand key implementation processes prior to scale-up. The aims of this study were to identify perceived facilitators and barriers to implementing the ASF and recommend evidence-based implementation strategies. Focus groups and interviews (N = 50) were conducted in three schools with stakeholders involved in programme implementation, i.e. school management (n = 5), ASF coordinator (n = 4), student-leaders (aged 15–16 years) (n = 64) and staff committee (n = 25). Transcripts were analysed using codebook thematic analysis and were guided by the Consolidated Framework for Implementation Research. Implementation strategies were identified and were selected systematically to address contextual needs. Three themes surrounding the facilitators and barriers to implementation were generated: intervention design factors (e.g. capacity building and knowledge of implementers; and interest and buy-in for the programme), organizational factors (e.g. optimization of people and the busy school environment) and interpersonal factors (e.g. communication and collaboration). The examination of facilitators and barriers to implementation of the ASF has assisted with the identification of implementation strategies including (not limited to) a shared leadership programme for student leaders and a more flexible timeline for completion. These facilitative implementation strategies may assist in the effective implementation of the ASF.
The condensation of a trapped dilute Bose gas with three-body interactions
Creators: name: Nam, Phan Thành
name: Ricaud, Julien
name: Triay, Arnaud
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 35J10, 82B10, 82D05

description: We consider a trapped dilute gas of $N$ bosons in $\mathbb{R}^3$ interacting via a three-body interaction potential of the form $N\, V(N^{1/2}(x-y,x-z))$. In the limit $N\to \infty$, we prove that every approximate ground state of the system is a convex superposition of minimizers of a 3D energy-critical nonlinear Schrödinger functional where the nonlinear coupling constant is proportional to the scattering energy of the interaction potential. In particular, the $N$-body ground state exhibits complete Bose--Einstein condensation if the nonlinear Schrödinger minimizer is unique up to a complex phase.
description: 57 pages
Bi-filtrations and persistence paths for 2-Morse functions
Creators: name: Budney, Ryan
name: Kaczynski, Tomasz
Publisher: name: arXiv
Year: 2021
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 57R35, 55N31, 55M99

description: This paper studies the homotopy-type of bi-filtrations of compact manifolds induced as the pre-image of filtrations of the plane for generic smooth functions f : M --> R^2. The primary goal of the paper is to allow for a simple description of the multi-graded persistent homology associated to such filtrations. The main result of the paper is a description of the evolution of the bi-filtration of f in terms of cellular attachments. An analogy of Morse-Conley equation and Morse inequalities along so called persistence paths are derived. A scheme for computing path-wise barcodes is proposed.
description: 23 pages, 15 figures
ST-LRTC_Code&Data.zip
Creators: name: zhao, zilong
name: Tang, Luliang
name: Fang, Mengyuan
name: Yang
name: Li, Chaokui
name: Li, Qingquan
Publisher: name: figshare
Year: 2023
Subjects: Transport geography

description: Code for "Toward urban traffic scenarios and more: A spatio-temporal analysis empowered low-rank tensor completion method for data imputation".
Tight quasi-universality of Reeb graph distances
Creators: name: Bauer, Ulrich
name: Bjerkevik, Håvard Bakke
name: Fluhr, Benedikt
Publisher: name: arXiv
Year: 2021
Subjects: subject: Geometric Topology (math.GT)
subject: Computational Geometry (cs.CG)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 62R40

description: We establish tight bi-Lipschitz bounds certifying quasi-universality (universality up to a constant factor) for various distances between Reeb graphs: the interleaving distance, the functional distortion distance, and the functional contortion distance. The definition of the latter distance is a novel contribution, and for the special case of contour trees we also prove strict universality of this distance. Furthermore, we prove that for the special case of merge trees the functional contortion distance coincides with the interleaving distance, yielding universality of all four distances in this case.
description: 28 pages, 8 figures. This version establishes the tightness of all the bounds shown in the conference paper for SoCG 2022
Quantum Interior Point Methods for Semidefinite Optimization
Creators: name: Augustino, Brandon
name: Nannicini, Giacomo
name: Terlaky, Tamás
name: Zuluaga, Luis F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Optimization and Control (math.OC)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We present two quantum interior point methods for semidefinite optimization problems, building on recent advances in quantum linear system algorithms. The first scheme, more similar to a classical solution algorithm, computes an inexact search direction and is not guaranteed to explore only feasible points; the second scheme uses a nullspace representation of the Newton linear system to ensure feasibility even with inexact search directions. The second is a novel scheme that might seem impractical in the classical world, but it is well-suited for a hybrid quantum-classical setting. We show that both schemes converge to an optimal solution of the semidefinite optimization problem under standard assumptions. By comparing the theoretical performance of classical and quantum interior point methods with respect to various input parameters, we show that our second scheme obtains a speedup over classical algorithms in terms of the dimension of the problem $n$, but has worse dependence on other numerical parameters.
Manual Tests Do Smell! Cataloging and Identifying Natural Language Test Smell - Replication Package
Creators: name: Soares, Elvys
name: Terceiro, Manoel
name: Oliveira, Naelson
name: Ribeiro, Márcio
name: Gheyi, Rohit
name: Souza, Emerson
name: Machado, Ivan
name: Santos, André
name: Fonseca, Baldoino
name: Bonifácio, Rodrigo
Publisher: name: figshare
Year: 2023
Subjects: Empirical software engineering
Automated software engineering
Software testing, verification and validation

description: We recruited participants through individual e-mail invitations, using emails provided by our industry partner. The invitations were sent to participants of manual test teams, quality assurance professionals and test managers, none of which had compensation nor obligation to respond the survey. We performed the survey in March 2023, achieving 24 responses. Concerning the demographics, we had participants from Brazilian teams, where 83.3% defined their primary work area as the industry — over academia — and their average declared experience with software testing was 4.3 years.
title: Übertragung von Methoden zur Kenngrößenermittlung des selbsttätigen Losdrehens für Versuche am Vibrationsprüfstand nach Junker auf Versuche an einem neuentwickelten Prüfaufbau für Einschraubenverbindungen mit kurzer Klemmlänge unter Verwendung eines Axialpulsers
Creators: name: Eberhard, A.
name: Beyer, S.
name: Klein, M.
name: Oechsner, M.
Publisher: name: Wiley-VCH
Year: 2024

description: Der Mechanismus des selbsttätigen Losdrehens kann über Kenngrößen, die am Vibrationsprüfstand nach Junker entwickelt wurden, beschrieben und eingeteilt werden. Hierbei sind die Kenngrößen der kritischen Grenzverschiebung, der kritischen Querkraft und der kritischen Drehwinkelsteigung Δφ/ΔN von entscheidender Wichtigkeit. Bei konstanten Randbedingungen wird es zu einem selbsttätigen Losdrehen der Verbindung kommen, wenn der Grenzwert dieser Kenngrößen überschritten wird. Im Folgenden wird betrachtet, in wieweit die Methoden zur Ermittlung dieser kritischen Kenngrößen auf einen neuentwickelten Prüfaufbau im Axialpulser für Einschraubenverbindungen der Abmessungen M12 und M8 mit kurzen Klemmlängen übertragbar sind.
Manual Tests Do Smell! Cataloging and Identifying Natural Language Test Smell
Creators: name: Terceiro, Manoel
name: Soares, Elvys
name: Ribeiro, Márcio
name: Gheyi, Rohit
name: Oliveira, Naelson
name: Souza, Emerson
name: Santos, André
name: Ferrari, Fabiano
name: Machado, Ivan
Publisher: name: figshare
Year: 2023
Subjects: Empirical software engineering
Automated software engineering
Software testing, verification and validation

description: We recruited participants through individual e-mail invitations, using emails provided by our industry partner. The invitations were sent to participants of manual test teams, quality assurance professionals and test managers, none of which had compensation nor obligation to respond the survey. We performed the survey in March 2023, achieving 24 responses. Concerning the demographics, we had participants from Brazilian teams, where 83.3% defined their primary work area as the industry — over academia — and their average declared experience with software testing was 4.3 years.
Operational Quantum Average-Case Distances
Creators: name: Maciejewski, Filip B.
name: Puchała, Zbigniew
name: Oszmaniec, Michał
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce distance measures between quantum states, measurements, and channels based on their statistical distinguishability in generic experiments. Specifically, we analyze the average Total Variation Distance (TVD) between output statistics of protocols in which quantum objects are intertwined with random circuits and measured in standard basis. We show that for circuits forming approximate 4-designs, the average TVDs can be approximated by simple explicit functions of the underlying objects -- the average-case distances (ACDs). We apply them to analyze the effects of noise in quantum advantage experiments and for efficient discrimination of high-dimensional states and channels without quantum memory. We argue that ACDs are better suited for assessing the quality of NISQ devices than common distance measures such as trace distance or the diamond norm.
description: 6 pages, 2 figures; v2: changed title, corrected typos; v3: improved narration, corrected typos, extended numerical simulations; v4: major changes, improved narration, extended examples and numerical simulations; v5: version accepted in Quantum, improved narration, expanded appendices; comments and suggestions are welcome; accompanying technical paper: arXiv:2112.14284