cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Enhancing Adversarial Training via Reweighting Optimization Trajectory
Creators: name: Huang, Tianjin
name: Liu, Shiwei
name: Chen, Tianlong
name: Fang, Meng
name: Shen, Li
name: Menkovski, Vlaod
name: Yin, Lu
name: Pei, Yulong
name: Pechenizkiy, Mykola
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Despite the fact that adversarial training has become the de facto method for improving the robustness of deep neural networks, it is well-known that vanilla adversarial training suffers from daunting robust overfitting, resulting in unsatisfactory robust generalization. A number of approaches have been proposed to address these drawbacks such as extra regularization, adversarial weights perturbation, and training with more data over the last few years. However, the robust generalization improvement is yet far from satisfactory. In this paper, we approach this challenge with a brand new perspective -- refining historical optimization trajectories. We propose a new method named \textbf{Weighted Optimization Trajectories (WOT)} that leverages the optimization trajectories of adversarial training in time. We have conducted extensive experiments to demonstrate the effectiveness of WOT under various state-of-the-art adversarial attacks. Our results show that WOT integrates seamlessly with the existing adversarial training methods and consistently overcomes the robust overfitting issue, resulting in better adversarial robustness. For example, WOT boosts the robust accuracy of AT-PGD under AA-$L_{\infty}$ attack by 1.53\% $\sim$ 6.11\% and meanwhile increases the clean accuracy by 0.55\%$\sim$5.47\% across SVHN, CIFAR-10, CIFAR-100, and Tiny-ImageNet datasets.
description: Accepted by ECML 2023
Bounded negativity, Harbourne constants and transversal arrangements of curves
Creators: name: Pokora, Piotr
name: Roulleau, Xavier
name: Szemberg, Tomasz
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14C20, 14J70

description: The Bounded Negativity Conjecture predicts that for every complex projective surface $X$ there exists a number $b(X)$ such that $C^2\geq -b(X)$ holds for all reduced curves $C\subset X$. For birational surfaces $f:Y\to X$ there have been introduced certain invariants (Harbourne constants) relating to the effect the numbers $b(X)$, $b(Y)$ and the complexity of the map $f$. These invariants have been studied previously when $f$ is the blowup of all singular points of an arrangement of lines in ${\mathbb P}^2$, of conics and of cubics. In the present note we extend these considerations to blowups of ${\mathbb P}^2$ at singular points of arrangements of curves of arbitrary degree $d$. We also considerably generalize and modify the approach witnessed so far and study transversal arrangements of sufficiently positive curves on arbitrary surfaces with the non-negative Kodaira dimension.
description: This is the final version, incorporating the suggestions of the referee, to appear in Annales de l'Institut Fourier Grenoble
Extensibility, modularity, and quality-adaptive streaming towards collaborative video authoring
Creators: name: Légaré, Jean-Sébastien
Publisher: name: University of British Columbia
Year: 2010

description: Video capture devices and online video viewing sites are proliferating. Content can be produced more easily than ever but the tasks required to compose and produce interesting videos are still very involving. Unfortunately, very little support is given for groups of amateurs to meet and collaborate to creation of new media. Existing video sharing sites do have some support for collaboration, but their best-effort mode of content delivery makes it impossible to support many of the desirable features usually available in local editors, such as advanced navigation support and fast-startup. Quality-adaptive streaming is interesting as it allows content to be distributed, and allows clients of varying capabilities to view the same encoded video source, the so-called “Encode once, stream anywhere”. This becomes even more important as the gap between low-end and high-end devices widens. In previous work we presented a Quality Adaptive Streaming system called QStream which has none of these limitations, but lacks the editing features. There are several media frameworks on the desktop that can provide the modules and pipelines necessary to build an editor, but they too are non-adaptive, and have multiple incompatibilities with QStream. This thesis presents Qinematic, a content creation framework that is quality-adaptive, and that borrows concepts from popular media frameworks for extensibility and modularity.
title: Preparation of Aniline-Based Nitrogen-Containing Diamond-Like Carbon Films with Low Electrical Resistivity
Creators: name: Hatada, Ruriko
name: Flege, Stefan
name: Ensinger, Wolfgang
name: Hesse, Sabine
name: Tanabe, Shuji
name: Nishimura, Yasuhisa
name: Baba, Koumei
Publisher: name: MDPI
Year: 2023

description: The intrinsic high electrical resistivity of diamond-like carbon (DLC) films prevents their use in certain applications. The addition of metal or nitrogen during the preparation of the DLC films leads to a lower resistivity of the films, but it is usually accompanied by several disadvantages, such as a potential contamination risk for surfaces in contact with the film, a limited area that can be coated, deteriorated mechanical properties or low deposition rates of the films. To avoid these problems, DLC films have been prepared by plasma source ion implantation using aniline as a precursor gas, either in pure form or mixed with acetylene. The nitrogen from the precursor aniline is incorporated into the DLC films, leading to a reduced electrical resistivity. Film properties such as hardness, surface roughness and friction coefficient are nearly unchanged as compared to an additionally prepared reference sample, which was deposited using only pure acetylene as precursor gas.
Coupled networks and networks with bimodal frequency distributions are equivalent
Creators: name: Pietras, Bastian
name: Deschle, Nicolás
name: Daffertshofer, Andreas
Publisher: name: arXiv
Year: 2016
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Populations of oscillators can display a variety of synchronization patterns depending on the oscillators' intrinsic coupling and the coupling between them. We consider two coupled, symmetric (sub)populations with unimodal frequency distributions and show that the resulting synchronization patterns may resemble those of a single population with bimodally distributed frequencies. Our proof of the equivalence of their stability, dynamics, and bifurcations, is based on an Ott-Antonsen ansatz. The generalization to networks consisting of multiple (sub)populations vis-à-vis networks with multimodal frequency distributions, however, appears impossible.
description: 4 pages, 4 figures, 1 supplementary pdf file
gob-1 is a trehalose-6-phosphate phosphatase required for intestine development in the nematode caenorhabditis elegans
Creators: name: Kormish, Jay Dene
Publisher: name: Graduate Studies
Year: 2004

description: Bibliography: p. 194-217
description: Some pages are in colour.
description: A genetic screen was developed with the intention of finding C. elegans genes that are required for intestine development or differentiation. The screen was based on the gut obstructed phenotype of the elt-2 null mutant. elt-2 is a GATA transcription factor believed to be the major transcription factor driving intestine differentiation. It was anticipated that screening for a similar gut obstructed mutant phenotype could identify genes that were functioning redundantly to elt-2 or downstream of elt-2. One of the mutations identified in this screen, gob-1(ca17), was mapped to the right-hand side of the X chromosome. Positional cloning of the gob-1(ca17) allele showed that it was a deletion of approximately 15 open reading frames. RNA-mediated interference to a gene in this region, H13N06.3, phenocopied the early larval arrest and gut obstructed phenotype of gob-1(ca17) and was thus identified as the gene responsible for this phenotype. The gob-1 RNAi mutant causes an early defect in the intestine. The gob-1 gene and GOB-1 protein are expressed specifically in the intestine during its early development. GOB-1 is a member of the Haloacid dehalogenase (HAD)-like hydrolase superfamily and is the first identified trehalose-6-phosphate phosphatase in the nematode phylum. GOB-1’s function in trehalose metabolism is currently unclear but mounting evidence suggests that GOB-1 may have a function required for viability of the worm independent of trehalose synthesis. ELT-2 is sufficient but not necessary for early embryonic expression of GOB-1. The ability of ELT-2 to drive gob-1 expression suggests that loss of gob-1 iv function may be a component of the later elt-2 loss of function defect in the larval intestine.
On line and pseudoline configurations and ball-quotients
Creators: name: Bokowski, Jürgen
name: Pokora, Piotr
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Geometry (math.AG)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 14C20, 52C35, 32S22

description: In this note we show that there are no real configurations of $d\geq 4$ lines in the projective plane such that the associated Kummer covers of order $3^{d-1}$ are ball-quotients and there are no configurations of $d\geq 4$ lines such that the Kummer covers of order $4^{d-1}$ are ball-quotients. Moreover, we show that there exists only one configuration of real lines such that the associated Kummer cover of order $5^{d-1}$ is a ball-quotient. In the second part we consider the so-called topological $(n_{k})$-configurations and we show, using Shnurnikov's inequality, that for $n < 27$ there do not exist $(n_{5})$-configurations and and for $n < 41$ there do not exist $(n_{6})$-configurations.
description: 7 pages, one figure. This is the final version, incorporating the suggestions of the referee, to appear in ARS Mathematica Contemporanea
Ott-Antonsen attractiveness for parameter-dependent oscillatory networks
Creators: name: Pietras, Bastian
name: Daffertshofer, Andreas
Publisher: name: arXiv
Year: 2016
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The Ott-Antonsen (OA) ansatz [Chaos 18, 037113 (2008), Chaos 19, 023117 (2009)] has been widely used to describe large systems of coupled phase oscillators. If the coupling is sinusoidal and if the phase dynamics does not depend on the specific oscillator, then the macroscopic behavior of the systems can be fully described by a low-dimensional dynamics. Does the corresponding manifold remain attractive when introducing an intrinsic dependence between an oscillator's phase and its dynamics by additional, oscillator specific parameters? To answer this we extended the OA ansatz and proved that parameter-dependent oscillatory systems converge to the OA manifold given certain conditions. Our proof confirms recent numerical findings that already hinted at this convergence. Furthermore we offer a thorough mathematical underpinning for networks of so-called theta neurons, where the OA ansatz has just been applied. In a final step we extend our proof by allowing for time-dependent and multi-dimensional parameters as well as for network topologies other than global coupling. This renders the OA ansatz an excellent starting point for the analysis of a broad class of realistic settings.
description: 31 pages, submitted to CHAOS
Productivity Potential in Dry Grocery Warehouses
Creators: name: Grinnell, Gerald
name: Friedman, Lawrence
name: Grinnell, Gerald
name: Friedman, Lawrence
Publisher: name: Unknown
Year: 1982
Subjects: subject: Labor and Human Capital
subject: Productivity Analysis
subject: Research and Development/Tech Change/Emerging Technologies
subject: Food wholesaling
subject: food retailing
subject: productivity
subject: labor
subject: market performance

description: Food distributors in the United States could substantially improve their productivity by making better use of existing technology. Direct labor costs could have been reduced by $700 million in 1981 by changing work assignments, obtaining a more balanced day-to-day workload, using new equipment, increasing use of unitized loads, altering some product handling practices, and partially mechanizing, according to this study of dry grocery warehouses.
Mobile App Monetization: An Essential Guide
Creators: name: Ntui, Aniebiet Inyang
Publisher: name: Zenodo
Year: 2021
Subjects: Apps
Andoid
IOS
Software Development
Mobile Applications

description: Mobile app monetization is a must for most of today’s mobile apps. Given the sheer size of the mobile app market, mobile app monetization has almost become a science in its own right with various tactics you can use not just to secure visibility to your mobile apps, but also to make money out of them. Unfortunately, due to somewhat clogged market, mobile app monetization has become very hard and you will need a lot of patience, diligence, knowledge and creativity to create an actionable monetization model, one that brings revenue both long and short term.
Trait-Based Profiles of ADHD in Adolescents and Young Adults
Creators: name: Smith, Tess E.
Publisher: name: University of Kentucky
Year: 2016
Subjects: subject: Psychology
subject: FOS: Psychology

description: Empirical work has examined the utility of using person-centered statistical approaches emphasizing traits to parsing Attention-Deficit/Hyperactivity disorder (ADHD) heterogeneity in preschool and school-aged children. However, trait-based profiles have not yet been examined in other age ranges, specifically adolescence and young adulthood. Therefore, the goal of the present study is to examine trait-based profiles in adolescents and young adults with ADHD in order to evaluate their similarity with trait-based profiles in preschoolers and children with ADHD and through comparison with external correlates (e.g., comorbidity). One hundred and eighty-two adolescents and 287 young adults completed measures of ADHD symptoms, personality and temperament traits, and comorbid internalizing and externalizing problems. Latent profile analysis suggested at least three consistent trait-based profiles related to ADHD within adolescents and young adults: low extraversion, high extraversion, and high neuroticism profiles. These profiles were largely similar to those found in preschool and middle childhood and demonstrated similar comorbidity patterns; namely, the low extraversion profile exhibited higher internalizing problems, the high extraversion profile exhibited higher externalizing problems, and the small high neuroticism profile exhibited descriptively higher levels of all comorbid problems. Such profiles may have utility for personalization of intervention based on trait profiles and comorbidity patterns, as well as – more speculatively – possible prognostic utility.
Microscopic model for the ferroelectric field effect in oxide heterostructures
Creators: name: Dong, Shuai
name: Zhang, Xiaotian
name: Yu, Rong
name: Liu, J. -M.
name: Dagotto, Elbio
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A microscopic model Hamiltonian for the ferroelectric field effect is introduced for the study of oxide heterostructures with ferroelectric components. The long-range Coulomb interaction is incorporated as an electrostatic potential, solved self-consistently together with the charge distribution. A generic double-exchange system is used as the conducting channel, epitaxially attached to the ferroelectric gate. The observed ferroelectric screening effect, namely the charge accumulation/depletion near the interface, is shown to drive interfacial phase transitions that give rise to robust magnetoelectric responses and bipolar resistive switching, in qualitative agreement with previous density functional theory calculations. The model can be easily adapted to other materials by modifying the Hamiltonian of the conducting channel, and it is useful in simulating ferroelectric field effect devices particularly those involving strongly correlated electronic components where ab-initio techniques are difficult to apply.
description: 9 pages, 10 figures, Physical Review B, accepted
Collaborative Nested Sampling: Big Data vs. complex physical models
Creators: name: Buchner, Johannes
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computation (stat.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: The data torrent unleashed by current and upcoming astronomical surveys demands scalable analysis methods. Many machine learning approaches scale well, but separating the instrument measurement from the physical effects of interest, dealing with variable errors, and deriving parameter uncertainties is often an after-thought. Classic forward-folding analyses with Markov Chain Monte Carlo or Nested Sampling enable parameter estimation and model comparison, even for complex and slow-to-evaluate physical models. However, these approaches require independent runs for each data set, implying an unfeasible number of model evaluations in the Big Data regime. Here I present a new algorithm, collaborative nested sampling, for deriving parameter probability distributions for each observation. Importantly, the number of physical model evaluations scales sub-linearly with the number of data sets, and no assumptions about homogeneous errors, Gaussianity, the form of the model or heterogeneity/completeness of the observations need to be made. Collaborative nested sampling has immediate application in speeding up analyses of large surveys, integral-field-unit observations, and Monte Carlo simulations.
description: Resubmitted to PASP Focus on Machine Intelligence in Astronomy and Astrophysics after first referee report. Figure 6 demonstrates the scaling for Collaborative MultiNest, PolyChord and RadFriends implementations. Figure 10 application to MUSE IFU data. Implementation at https://github.com/JohannesBuchner/massivedatans
Interplay between dipole and quadrupole modes of field influence in liquid-crystalline suspensions of ferromagnetic particles
Creators: name: Makarov, D. V.
name: Zakhlevnykh, A. N.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: In the framework of continuum theory we study orientational transitions induced by electric and magnetic fields in ferronematics, i.e., in liquid-crystalline suspensions of ferromagnetic particles. We have shown that in a certain electric field range the magnetic field can induce a sequence of re-entrant orientational transitions in ferronematic layer: nonuniform phase --- uniform phase --- nonuniform phase. This phenomenon is caused by the interplay between the dipole (ferromagnetic) and quadrupole (dielectric and diamagnetic) mechanisms of the field influence on a ferronematic structure. We have found that these re-entrant Freedericksz transitions exhibit tricritical behavior, i.e., they can be of the first or the second order. The character of the transitions depends on a degree of redistribution of magnetic admixture in the sample exposed to uniform magnetic field (magnetic segregation). We demonstrate how electric and magnetic fields can change the order of orientational transitions in ferronematics. We show that electric Freedericksz transitions in ferronematics subjected to magnetic field have no re-entrant nature. Tricritical segregation parameters for the transitions induced by electric or magnetic fields are obtained analytically. We demonstrate the re-entrant behavior of ferronematic by numerical simulations of the magnetization and optical phase lag.
description: 12 pages, 9 figures, to be published in Soft Matter
Lyric mindedness
Creators: name: Savarese, John Lorenzo
Publisher: name: No Publisher Supplied
Year: 2012

description: “Lyric Mindedness” recovers conversations between Romantic-era poetics and the science of the embodied mind. While recent scientific approaches have tended to reinforce the idea of “the lyric” in its most familiar Romantic formulation—where it voices a solitary or idealized consciousness—“Lyric Mindedness” shows that Romantic-era lyric theory served as the occasion for a livelier debate between diverse, competing models of mindedness. Romantic theories of the lyric flirt with materialism, entertain the notion that the mind spreads over bodies and linguistic technologies, and explore the individual mind’s entanglements with a social environment made up of other minds. I begin by examining James Macpherson’s “Ossian” poems, in which he takes up the Scottish Enlightenment’s understanding of the lyric as a vestige of human cognition in its earliest and most pristine stages. Because his poems were largely forgeries, however, Macpherson imports eighteenth-century physiology into his Ossianic recreations, and experiments with the relation between poetic form and popular knowledge. The second chapter pursues the reception of that same theory—that poetry expressed the foundations of human cognition—into Romantic texts that align lyrical practice with cognitive disability. I trace the argument from William Wordsworth’s “The Idiot Boy” through Walter Scott’s Waverley, to show how the lyric, like disability, came to be understood as revealing the quasi-mechanical operations to be found at the core of cognition.Chapter three, on the collaborative writing and thinking of William Wordsworth, Dorothy Wordsworth, and Samuel Taylor Coleridge, examines how technologies of writing and, more specifically, the lyric as a generic medium, bring mental activity out of the individual head and into social circulation. The final chapter turns to William Hazlitt’s counterintuitive philosophy of action, which holds that even the simplest self-directed activities, like pulling away from a hot stove, require the same outward-directed faculties as sympathy for another person. This strange conclusion casts new light on Hazlitt’s later literary criticism, often read as installing a notion of private lyric that we have come to regard as traditionally “Romantic.” His early philosophy, by contrast, gives a glimpse of what a more capacious approach to “lyric mindedness” might look like.
Stellar Evolution Constraints on the Triple-Alpha Reaction Rate
Creators: name: Suda, Takuma
name: Hirschi, Raphael
name: Fujimoto, Masayuki Y.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We investigate the quantitative constraint on the triple-alpha reaction rate based on stellar evolution theory, motivated by the recent significant revision of the rate proposed by nuclear physics calculations. Targeted stellar models were computed in order to investigate the impact of that rate in the mass range of 0.8 < M / Msun < 25 and in the metallicity range between Z = 0 and Z = 0.02. The revised rate has a significant impact on the evolution of low- and intermediate-mass stars, while its influence on the evolution of massive stars (M >~ 10 Msun) is minimal. We find that employing the revised rate suppresses helium shell flashes on AGB phase for stars in the initial mass range 0.8 < M / Msun < 6, which is contradictory to what is observed. The absence of helium shell flashes is due to the weak temperature dependence of the revised triple-alpha reaction cross section at the temperature involved. In our models, it is suggested that the temperature dependence of the cross section should have at least nu > 10 at T = 1 - 1.2 x 10^8 K where the cross section is proportional to T^{nu}. We also derive the helium ignition curve to estimate the maximum cross section to retain the low-mass first red giants. The semi-analytically derived ignition curves suggest that the reaction rate should be less than ~ 10^{-29} cm^6 s^{-1} mole^{-2} at ~ 10^{7.8} K, which corresponds to about three orders of magnitude larger than that of the NACRE compilation. In an effort to compromise with the revised rates, we calculate and analyze models with enhanced CNO cycle reaction rates to increase the maximum luminosity of the first giant branch. However, it is impossible to reach the typical RGB tip luminosity even if all the reaction rates related to CNO cycles are enhanced by more than ten orders of magnitude.
description: 14 pages, 8 figures, accepted by the ApJ
First-order phase transitions in the Kuramoto model with compact bimodal frequency distributions
Creators: name: Pietras, Bastian
name: Deschle, Nicolás
name: Daffertshofer, Andreas
Publisher: name: arXiv
Year: 2018
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: The Kuramoto model of a network of coupled phase oscillators exhibits a first-order phase transition when the distribution of natural frequencies has a finite flat region at its maximum. First-order phase transitions including hysteresis and bistability are also present if the frequency distribution of a single network is bimodal. In this study we are interested in the interplay of these two configurations and analyze the Kuramoto model with compact bimodal frequency distributions in the continuum limit. As of yet, a rigorous analytic treatment has been elusive. By combining Kuramoto's self-consistency approach, Crawford's symmetry considerations, and exploiting the Ott-Antonsen ansatz applied to a family of rational distribution functions that converge towards the compact distribution, we derive a full bifurcation diagram for the system's order parameter dynamics. We show that the route to synchronization always passes through a standing wave regime when the bimodal distribution is compounded by two unimodal distributions with compact support. This is in contrast to a possible transition across a region of bistability when the two compounding unimodal distributions have infinite support.
description: 16 pages, 11 figures
Ανάπτυξη ηλεκτροχημικού αισθητήρα βασιζόμενου σε ηλεκτροδιακή επιφάνεια υαλώδους άνθρακα, μορφοποιημένης με νανοσωματίδια αργύρου συζευγμένου με σαφράν, κι εφαρμογή του στον προσδιορισμό της αμοξικιλλίνης σε δείγματα ούρων
Creators: name: Σαρακατσάνου, Χριστίνα Ευαγγέλου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Νανοσωματίδια
Αμοξικιλλίνη
Ηλεκτροανάλυση
Nanoparticles
Amoxicillin
Electroanalysis

description: Ο προσδιορισμός των αντιβιοτικών είναι ζωτικής σημασίας προκειμένου να εκτιμηθούν οι πιθανές επιπτώσεις τους στην ανθρώπινη υγεία και στο περιβάλλον. Αυτή η μελέτη είχε ως στόχο την ανάπτυξη ενός μορφοποιημένου ηλεκτροδίου υαλώδους άνθρακα με νανοσωματίδια αργύρου συζευγμένου σαφράν για τον προσδιορισμό του αντιβιοτικού αμοξικιλλίνης σε δείγματα ούρων. Το μορφοποιημένο ηλεκτρόδιο παρασκευάστηκε με ηλεκτροαπόθεση νανοσωματιδίων αργύρου στην επιφάνεια του ηλεκτροδίου, ακολουθούμενη από εναπόθεση αμοξικιλλίνης στην επιφάνεια. Η ηλεκτροχημική συμπεριφορά του μορφοποιημένου ηλεκτροδίου μελετήθηκε με κυκλική βολταμμετρία και βολταμμετρία τετραγωνικού παλμού. Τα αποτελέσματα έδειξαν ότι το μορφοποιημένο ηλεκτρόδιο εμφάνισε ενισχυμένη ηλεκτροκαταλυτική δράση προς την οξείδωση της αμοξικιλλίνης. Το όριο ανίχνευσης που βρέθηκε ήταν πολύ χαμηλό, επιβεβαιώνοντας την υψηλή ευαισθησία της τεχνικής. Το μορφοποιημένο ηλεκτρόδιο στη συνέχεια εφαρμόστηκε στον προσδιορισμό της αμοξικιλλίνης σε δείγματα ούρων, με επιτυχία, υποδεικνύοντας τη δυνατότητα του μορφοποιημένου ηλεκτροδίου για τον προσδιορισμό της αμοξικιλλίνης σε βιολογικά δείγματα. Συνολικά, το μορφοποιημένο ηλεκτρόδιο υαλώδους άνθρακα με νανοσωματίδια αργύρου έδειξε πολλά υποσχόμενα αποτελέσματα για τον ευαίσθητο και επιλεκτικό προσδιορισμό της αμοξικιλλίνης στα δείγματα ούρων.
description: Determination of antibiotics is crucial in order to assess their potential effects on human health and the environment. This study aimed to develop a saffron-conjugated silver nanoparticle patterned glassy carbon electrode for the determination of the antibiotic amoxicillin in urine samples. The modified electrode was prepared by electrodepositing silver nanoparticles on the electrode surface, followed by the deposition of amoxicillin on the surface. The electrochemical behavior of the modified electrode was studied using cyclic voltammetry and square wave voltammetry. The results showed that the modified electrode showed enhanced electrocatalytic activity towards the oxidation of amoxicillin. The detection limit found was very low, confirming the high sensitivity of the technique. The modified electrode was then applied to the determination of amoxicillin in urine samples with success, indicating the potential of the modified electrode for the determination of amoxicillin in biological samples. Overall, the modified glassy carbon electrode with silver nanoparticles showed promising results for the sensitive and selective determination of amoxicillin in urine samples.
Exploring morphological correlations among H2CO, 12CO, MSX and continuum mappings
Creators: name: Zhang, Chuan Peng
name: Esimbek, Jarken
name: Zhou, Jian Jun
name: Wu, Gang
name: Du, Zhi Mao
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: There are relatively few H2CO mappings of large-area giant molecular cloud (GMCs). H2CO absorption lines are good tracers for low-temperature molecular clouds towards star formation regions. Thus, the aim of the study was to identify H2CO distributions in ambient molecular clouds. We investigated morphologic relations among 6-cm continuum brightness temperature (CBT) data and H2CO (111-110; Nanshan 25-m radio telescope), 12CO (1--0; 1.2-m CfA telescope) and midcourse space experiment (MSX) data, and considered the impact of background components on foreground clouds. We report simultaneous 6-cm H2CO absorption lines and H110αradio recombination line observations and give several large-area mappings at 4.8 GHz toward W49 (50'\times50'), W3 (70'\times90'), DR21/W75 (60'\times90') and NGC2024/NGC2023 (50'\times100') GMCs. By superimposing H2CO and 12CO contours onto the MSX color map, we can compare correlations. The resolution for H2CO, 12CO and MSX data was about 10', 8' and 18.3", respectively. Comparison of H2CO and 12CO contours, 8.28-μm MSX colorscale and CBT data revealed great morphological correlation in the large area, although there are some discrepancies between 12CO and H2CO peaks in small areas. The NGC2024/NGC2023 GMC is a large area of HII regions with a high CBT, but a H2CO cloud to the north is possible against the cosmic microwave background. A statistical diagram shows that 85.21% of H2CO absorption lines are distributed in the intensity range from -1.0 to 0 Jy and the ΔV range from 1.206 to 5 km/s.
description: 18 pages, 22 figures, 5 tables. Accepted to be published in Astrophysics and Space Science
Quantization of some moduli spaces of parabolic vector bundles on CP^1
Creators: name: Biswas, Indranil
name: Florentino, Carlos
name: Mourão, José
name: Nunes, João P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Algebraic Geometry (math.AG)
subject: Mathematical Physics (math-ph)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53D50, 14H60

description: We address quantization of the natural symplectic structure on a moduli space of parabolic vector bundles of parabolic degree zero over $\mathbf{CP}^1$ with four parabolic points and parabolic weights in {0,1/2}. Identifying such parabolic bundles as vector bundles on an elliptic curve, we obtain explicit expressions for the corresponding non-abelian theta functions. These non-abelian theta functions are described in terms of certain naturally defined distributions on the compact group SU(2).
description: 17 pages
Essential singularities of fractal zeta functions
Creators: name: Lapidus, Michel L.
name: Radunović, Goran
name: Žubrinić, Darko
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study the essential singularities of geometric zeta functions $ζ_{\mathcal L}$, associated with bounded fractal strings $\mathcal L$. For any three prescribed real numbers $D_{\infty}$, $D_1$ and $D$ in $[0,1]$, such that $D_{\infty}α\}$, except for possible isolated singularities in this half-plane. Defining $\mathcal L$ as the disjoint union of a sequence of suitable generalized Cantor strings, we show that the set of accumulation points of the set $S_{\infty}$ of essential singularities of $ζ_{\mathcal L}$, contained in the open right half-plane $\{{\rm Re}\, s>D_{\infty}\}$, coincides with the vertical line $\{{\rm Re}\, s=D_{\infty}\}$. We extend this construction to the case of distance zeta functions $ζ_A$ of compact sets $A$ in $\mathbb{R}^N$, for any positive integer $N$.
description: Theorem 3.2 (b) was wrong in the previous version, so we have decided to omit it and pursue this issue at some future time. Part (b) of Theorem 3.2. was not used anywhere else in the paper. Theorem 3.2. is now called Proposition 3.2. on page 12. Corrected minor typos and added new references To appear in: Pure and Applied Functional Analysis; issue 5 of volume 5 (2020)
Synapha fasciata Meigen 1818
Creators: name: El Mouden, Mohamed Amin
name: Chandler, Peter J.
name: Saidoun, Imane
name: Driauach, Ouafaa
name: Belqat, Boutaïna
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Mycetophilidae
Synapha
Synapha fasciata

description: Synapha fasciata Meigen, 1818
Material examined.
Morocco – Middle Atlas Region • 1 ♂; Forêt Admam; 22/V/2022; K. Aattouch, M. El Ouahabi and M. A. El Mouden leg; UAE-FST MA 22/2423.
North African distribution.
Morocco (Banamar et al. 2020).
description: Published as part of El Mouden, Mohamed Amin, Chandler, Peter J., Saidoun, Imane, Driauach, Ouafaa & Belqat, Boutaïna, 2025, A new species of Docosia Winnertz, 1864 and new records of fungus gnats (Diptera, Bolitophilidae, Keroplatidae and Mycetophilidae) from North Africa, pp. 349-379 in ZooKeys 1233 on pages 349-379, DOI: 10.3897/zookeys.1233.130502
The impact of online professional development on teaching practice: a case study
Creators: name: Childs, Elizabeth A.
Publisher: name: Education
Year: 2004

description: Bibliography: p. 193-206 (242-245)
description: This research investigates one online professional development program for K-12 teachers to determine if it impacted teaching practice. To do so, it employed the traditions of ethnography (Patton, 1990), case study research (Merriam, 1998) and frame and code analysis (Goffman, 1959, 1974) in an attempt to provide a holistic account of the real-life experience of online professional development for online educators. The research methods include the use of digital audio clips to maintain interview authenticity and accuracy. Supported by evidence from the literature of teacher change, teacher professional development, the requirements of online educators and the experiences of the ePD participants, the findings of this research suggest that the ePD program did have an impact on the teaching practice of its participants. This impact was described and interpreted across five frames and their associated codes, which were supported by the literature and validated by the experiences of the interviewees. The frames include: (1) Fundamentals, (2) Change and Impact, (3) Program Design, (4) Implementation and Use, and (5) Learning Culture and Sense of Community. Further, this research suggests that the online teaching and learning environment has different characteristics and possibilities than those previously available in traditional educational settings (Reyes-Mendez et al, 2003). Consequently, as teachers are now being asked to create online learning opportunities for their students (Advisory Committee for Online Learning, 2001), in an environment they are not familiar with (Stein et al. 1999), they will need support in order to develop their own potential for working online. The ePD program offered by the Calgary Board of Education in Alberta, Canada appeared to be a model that attempts to provide this type of support.
Invariant Generalized Complex Structures on Partial Flag Manifolds
Creators: name: Varea, Carlos A. B.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: The aim of this paper is to classify all invariant generalized complex structure on a partial flag manifold $\mathbb{F}_Θ$ with at most four isotropy summands. To classify them all we proved that an invariant generalized almost complex structure on $\mathbb{F}_Θ$ is `constant' in each component of the isotropy representation.
Farm Pesticide Supply-Demand Trends, 1982
Creators: name: Eichers, Theodore R.
name: Serletis, William S
name: Eichers, Theodore R.
name: Serletis, William S
Publisher: name: Unknown
Year: 1982
Subjects: subject: Crop Production/Industries
subject: Demand and Price Analysis
subject: Productivity Analysis
subject: Pesticides
subject: herbicides
subject: insecticides
subject: pesticide supplies
subject: pesticide demand

description: Pesticide demand in 1982 should be down less than 5 percent from last year. Manufacturers report price increases of 6 to 8 percent to their distributors, but plentiful supplies and weak demand should hold farm price increases to only 5 percent over last spring. Pesticide production should increase 11 percent, satisfying both domestic and export demand for 1982.
The (λ, κ)-Freese-Nation property for boolean algebras and compacta
Creators: name: Milovich, David
Publisher: name: arXiv
Year: 2012
Subjects: subject: Logic (math.LO)
subject: General Topology (math.GN)
subject: FOS: Mathematics
subject: 03E04, 06E05 (Primary) 54B10, 54A25, 54C10 (Secondary)

description: We study a two-parameter generalization of the Freese-Nation Property of boolean algebras and its order-theoretic and topological consequences. For every regular infinite κ, the (κ,κ)-FN, the (κ^+,κ)-FN, and the κ-FN are known to be equivalent; we show that the family of properties (λ,μ)-FN for λ>μform a true two-dimensional hierarchy that is robust with respect to coproducts, retracts, and the exponential operation. The (κ,\aleph_0)-FN in particular has strong consequences for base properties of compacta (stronger still for homogeneous compacta), and these consequences have natural duals in terms of special subsets of boolean algebras. We show that the (κ,\aleph_0)-FN also leads to a generalization of the equality of weight and π-character in dyadic compacta. Elementary subalgebras and their duals, elementary quotient spaces, were originally used to define the (λ, κ)-FN and its topological dual, which naturally generalized from Stone spaces to all compacta, thereby generalizing Shchepin's notion of openly generated compacta. We introduce a simple combinatorial definition of the (λ, κ)-FN that is equivalent to the original for regular infinite cardinals λ>κ.
description: 18 pages
Метод медицинской реабилитации, содержащий психологическую коррекцию агрессивного поведения у детей с расстройствами аутистического спектра
Creators: name: Емельянцева, Татьяна
name: Захаревич, Ольга
name: Разуванов, Алексей
name: Зуева, Алина
name: Троценко, Ольга
Publisher: name: Zenodo
Year: 2023

description: Государственное учреждение «Республиканский научно-практический центр медицинской экспертизы и реабилитации» является ведущим учреждением страны в сфере клинической реабилитации. Специалисты Центра имеют большой опыт научно-исследовательской и практической деятельности, оказывают высококвалифицированную помощь пациентам после завершения радикального лечения онкологических заболеваний.
Delocalization of ultracold atoms in a disordered potential due to light scattering
Creators: name: Nowak, Boris
name: Kinnunen, Jami J.
name: Holland, Murray J.
name: Schlagheck, Peter
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We numerically study the expansion dynamics of ultracold atoms in a one-dimensional disordered potential in the presence of a weak position measurement of the atoms. We specifically consider this position measurement to be realized by a combination of an external laser and a periodic array of optical microcavities along a waveguide. The position information is acquired through the scattering of a near-resonant laser photon into a specific eigenmode of one of the cavities. The time evolution of the atomic density in the presence of this light scattering mechanism is described within a Lindblad master equation approach, which is numerically implemented using the Monte Carlo wave function technique. We find that an arbitrarily weak rate of photon emission leads to a breakdown of Anderson localization of the atoms.
description: 7 pages, 8 figures
Evaluation of a multimedia resource for health professionals using the phenomenographic and checklist approaches
Creators: name: Premkumar, Kalyani
Publisher: name: Education
Year: 2003

description: Bibliography: p. 206-234.
description: Given the rapid turnover of multimedia resources in all fields, software evaluation is an important issue for both buyers and developers. Evaluation helps educators and learners identify if the content meets their individual needs. To developers, evaluation is key in product improvement. Evaluation may be done at the front-end, in use (formative) and/or at the end (summative stages) and includes assessment of the user interface, multimedia integration, learning experience and satisfaction, and other variables as required in the circumstances. The need for assessment has resulted in the development of a variety of evaluation techniques and it becomes necessary for stakeholders to identify the actual property that each of the methods assesses. This study compared the evaluation of a multimedia resource for health professionals using two different methods - a validated evaluation tool in checklist format and the qualitative method of phenomenography in order to compare the two methods on the basis of the information provided, weaknesses and strengths, and benefits to stakeholders. The results should be helpful to anyone needing a thorough appraisal of a multimedia product. The CD-ROM Interactive Pathology--a reference software developed for massage therapy students and therapists was evaluated. Massage therapists, content experts and technical experts evaluated the product using checklists, while therapists used the phenomenographic approach. The checklist method took a wholistic approach and gave a complete appraisal of the various aspects listed and provided useful information relating to content. Evaluation by phenomenography provided learner-related data: approach taken to the multimedia resource; user interface; educational principles; affective responses; and, problems relating to comprehension, learning and misconceptions. While the checklist may be used in all stages of development, phenomenography would be helpful during formative and summative stages. Both methods would be of benefit to developers. For educators, the checklist approach would help appraise the overall quality of the product while phenomenography would give them empirical evidence of its usefulness to learners and to help identify how the product could be incorporated into teaching. It may also provide information that has wider curricular implications. For learners, checklist is the only feasible method for evaluation. By carefully choosing evaluation methods unpleasant surprises with the acceptance and use of a multimedia product can be avoided by all stakeholders.
The Discovery of a Debris Disk Around the DAV White Dwarf PG 1541+651
Creators: name: Kilic, Mukremin
name: Patterson, Adam J.
name: Barber, Sara
name: Leggett, S. K.
name: Dufour, P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: To search for circumstellar disks around evolved stars, we targeted roughly 100 DA white dwarfs from the Palomar Green survey with the Peters Automated Infrared Imaging Telescope (PAIRITEL). Here we report the discovery of a debris disk around one of these targets, the pulsating white dwarf PG 1541+651 (KX Draconis, hereafter PG1541). We detect a significant flux excess around PG1541 in the K-band. Follow-up near-infrared spectroscopic observations obtained at the NASA Infrared Telescope Facility (IRTF) and photometric observations with the warm Spitzer Space Telescope confirm the presence of a warm debris disk within 0.13-0.36 Rsun (11-32x the stellar radius) at an inclination angle of 60deg. At Teff = 11880 K, PG1541 is almost a twin of the DAV white dwarf G29-38, which also hosts a debris disk. All previously known dusty white dwarfs are of the DAZ/DBZ spectral type due to accretion of metals from the disk. High-resolution optical spectroscopy is needed to search for metal absorption lines in PG1541 and to constrain the accretion rate from the disk. PG1541 is only 55 pc away from the Sun and the discovery of its disk in our survey demonstrates that our knowledge of the nearby dusty white dwarf population is far from complete.
description: MNRAS Letters, in press
THE SCIENTIFIC, METHODOLOGICAL, AND POLITICAL SIGNIFICANCE OF ADVANCING DIGITAL TRANSFORMATION PROCESSES IN REGIONAL INDUSTRY
Creators: name: Muhammadiyev, Sardorbek
name: Halimov, Javlon
Publisher: name: Zenodo
Year: 2024

description: The article enhances the concepts of "transformation process mechanisms," "economic mechanisms," "financial mechanisms," and "management mechanisms" in the context of improving transformation processes within regional industry. It also advances the simulation modeling of processes aimed at increasing the volume, pricing, and sales of industrial sectors in regions, focusing on the effectiveness of synergy achieved through the utilization of digital technologies in regional digital transformation.
Spikes in the SED and Ripples in the Outskirts of Galaxies
Creators: name: Chakrabarti, Sukanya
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We describe a new method that allows us to quantitatively characterize galactic satellites from analysis of disturbances in outer gas disks, without requiring knowledge of their optical light. We have demonstrated the validity of this method, which we call Tidal Analysis, by applying it to local spirals with known optical companions, including M51 and NGC 1512. These galaxies span the range from having a low mass companion (~ one-hundredth the mass of the primary galaxy) to a fairly massive companion (~ one-third the mass of the primary galaxy). This approach has broad implications for many areas of astrophysics - for the indirect detection of dark matter (or dark-matter dominated dwarf galaxies), and for galaxy evolution in its use as a decipher of the dynamical impact of satellites on galactic disks. Here, we present some preliminary results on the emergent SEDs and images, calculated along the time sequence of these dynamical simulations using the 3-D self-consistent Monte Carlo radiative transfer code RADISHE. We explore star formation prescriptions and how they affect the emergent SEDs and images. Our goal is to identify SED colors that are primarily affected by the galaxy's interaction history, and not significantly affected by the choice of star formation prescription. If successful, we may be able to utilize the emergent UV-IR SED of the primary galaxy to understand its recent interaction history.
description: 7 pages, 4 figures, proceedings of invited talk at IAU Symposium No. 284, The Spectral Energy Distribution of Galaxies