cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Isomonodromic deformation with an irregular singularity and the Theta function
Creators: name: Matsuda, Kazuhide
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 34M55, 33E05

description: We will study a monodromy preserving deformation with an irregular singular point and determine the $τ$ function of the monodromy preserving deformation by the elliptic $θ$ function moving the argument $z$ and the period $Ω$.
description: 30 pages
การศึกษาปัญหาการบริหารจัดการศึกษาระดับปฐมวัยในโรงเรียนสังกัดสำนักงานเขตพื้นที่การศึกษานนทบุรี เขต 1
Creators: name: สุดารัตน์ คำพืช
Publisher: name: วารสารวิจัย มสด สาขามนุษยศาสตร์และสังคมศาสตร์
Year: 2553
Subjects: การบริหารจัดการศึกษา,การศึกษาปฐมวัย

description: 4, 6, วารสารวิจัย มสด สาขามนุษยศาสตร์และสังคมศาสตร์
การจัดประสบการณ์การประกอบอาหารเพื่อพัฒนาทักษะพื้นฐานทางคณิตศาสตร์เรื่องการนับจำนวน 1-10 ของเด็กปฐมวัยที่มีปัญหาทางการเรียนรู้ชั้นอนุบาล 2 โรงเรียนวัดยาวล่าง สำนักงานเขตพื้นที่การศึกษาจันทบุรี เขต 2
Creators: name: สุนันท์ รักไทย
Publisher: name: วารสารวิจัย มสด สาขามนุษยศาสตร์และสังคมศาสตร์
Year: 2553
Subjects: การประกอบอาหาร,ทักษะพื้นฐานทางคณิตศาสตร์,เด็กที่มีปัญหาทางการเรียนรู้

description: 4, 6, วารสารวิจัย มสด สาขามนุษยศาสตร์และสังคมศาสตร์
PHL 417: a zirconium-rich pulsating hot subdwarf (V366 Aquarid) discovered in K2 data
Creators: name: Østensen, Roy
name: Jeffery, C. Simon
name: Saio, Hideyuki
name: Hermes, J. J.
name: Telting, John
name: Vučković, Maja
name: Vos, Joris
name: Baran, Andrzej
name: Reed, Mike
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Kepler spacecraft observed the hot subdwarf star PHL 417 during its extended K2 mission, and the high-precision photometric lightcurve reveals the presence of 17 pulsation modes with periods between 38 and 105 minutes. From follow-up ground-based spectroscopy we find that the object has a relatively high temperature of 35 600 K, a surface gravity of $\log g / {\rm cm\,s^{-2}}\,=\,5.75$ and a super-solar helium abundance. Remarkably, it also shows strong zirconium lines corresponding to an apparent +3.9 dex overabundance compared with the Sun. These properties clearly identify this object as the third member of the rare group of pulsating heavy-metal stars, the V366 Aquarii pulsators. These stars are intriguing in that the pulsations are inconsistent with the standard models for pulsations in hot subdwarfs, which predicts that they should display short-period pulsations rather than the observed longer periods. We perform a stability analysis of the pulsation modes based on data from two campaigns with K2. The highest amplitude mode is found to be stable with a period drift, $\dot{P}$, of less than $1.1\cdot10^{-9}$ s/s. This result rules out pulsations driven during the rapid stages of helium flash ignition.
description: MNRAS Accepted 5 October 2020, 12 pages, 9 figures
Octupolar order in the multiple spin exchange model on a triangular lattice
Creators: name: Momoi, Tsutomu
name: Sindzingre, Philippe
name: Shannon, Nic
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We show how a gapless spin liquid with hidden octupolar order arises in an applied magnetic field, in a model applicable to thin films of 3He with competing ferromagnetic and antiferromagnetic (cyclic) exchange interactions. Evidence is also presented for nematic -- i.e., quadrupolar -- correlations bordering on ferromagnetism in the absence of a magnetic field.
description: 4 pages, 5 figures
การพัฒนาการอ่านคำภาษาไทยของเด็กที่มีปัญหาทางการเรียนรู้ชั้นประถมศึกษาปีที่ 2 โรงเรียนวัดบูรพาพิทยาราม สำนักงานเขตพื้นที่การศึกษาจันทบุรี เขต 1
Creators: name: นงเยาว์ เสนะวงศ์
Publisher: name: วารสารวิจัย มสด สาขามนุษยศาสตร์และสังคมศาสตร์
Year: 2553
Subjects: เด็กที่มีความบกพร่องด้านการอ่าน

description: 4, 6, วารสารวิจัย มสด สาขามนุษยศาสตร์และสังคมศาสตร์
Data Boost: Text Data Augmentation Through Reinforcement Learning Guided Conditional Generation
Creators: name: Liu, Ruibo
name: Xu, Guangxuan
name: Jia, Chenyan
name: Ma, Weicheng
name: Wang, Lili
name: Vosoughi, Soroush
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Data augmentation is proven to be effective in many NLU tasks, especially for those suffering from data scarcity. In this paper, we present a powerful and easy to deploy text augmentation framework, Data Boost, which augments data through reinforcement learning guided conditional generation. We evaluate Data Boost on three diverse text classification tasks under five different classifier architectures. The result shows that Data Boost can boost the performance of classifiers especially in low-resource data scenarios. For instance, Data Boost improves F1 for the three tasks by 8.7% on average when given only 10% of the whole data for training. We also compare Data Boost with six prior text augmentation methods. Through human evaluations (N=178), we confirm that Data Boost augmentation has comparable quality as the original data with respect to readability and class consistency.
description: In proceedings of the 2020 Conference on Empirical Methods in Natural Language Processing (EMNLP 2020). Online
What is the highest Tc for phonon mediated superconductivity?
Creators: name: De Cao, Tian
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We suggest that the high-temperature superconductivity is attributed to the director-roles of van Hove singularity between electron-electron interaction and electron-phonon interaction. Difference between the critical temperature and pairing temperature is presented, and the Fermi arc, d-wave symmetry and poor conductor etc are discussed. Particularly, non-s-wave symmetry is predicted to have the highest Tc for superconductors.
description: Now we believe that the superconducting transition is not due to the BEC, thus we withdrawn this paper
Διαβάζοντας τον Δάσκαλο του Φρανκ Μακ Κορτ: Αναστοχασμοί για τη διδασκαλία του μαθήματος της λογοτεχνίας:
Creators: name: Παπαδιαμαντοπούλου, Ελένη-Αναστασία Παναγιώτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2010
Subjects: διδασκαλία
λογοτεχνία
teaching
literature

description: Ο Frank McCourt στο αυτοβιογραφικό έργο Ο Δάσκαλος καταθέτει τις εμπειρίες από την τριαντάχρονη εκπαιδευτική του διαδρομή με εντυπωσιακή απήχηση στο αναγνωστικό κοινό. Αναδεικνύει τα προβλήματα της σύγχρονης διδακτικής της λογοτεχνίας και υπερβαίνει τη συμβατική διδασκαλία με δημιουργικότητά και καθημερινό πειραματισμό. Οι διδακτικές του προτάσεις μελετήθηκαν με ποιοτική ανάλυση περιεχομένου και συγκρίθηκαν με τις θεωρητικές αρχές και προτάσεις της Παιδαγωγικής. Το βιβλίο περιέχει 162 σκηνές διδακτικής πράξης οι οποίες διαχωρίστηκαν σε εννέα θεματικές ενότητες παιδαγωγικού ενδιαφέροντος. Στην εργασία αυτή παρουσιάζονται αναλυτικότερα οι θεματικές ενότητες που αφορούν στη διδασκαλία της λογοτεχνίας και της δημιουργικής γραφής.
description: In his autobiographic book The Teacher man: a memoir, which has had an impressive impact to his readers, Frank McCourt describes his thirty years teaching experience. The author –using his exepriences– reflects upon critical issues of contemporary literature-teaching practice and proposes non-conventional and creative teaching practices based on constant experimentation. His teaching practices have been studied using the method of qualitative content analysis and have been juxtaposed with educational theories and practices. The book consists of 162 teaching practice “scenes”-incidents, which have been organized in nine thematic categories of pedagogical interest. This paper presents and dicusses in detail one of them, namely the category of “teaching literature and creative writing”.
Microstates and near-horizon D-brane probes
Creators: name: Raeymaekers, Joris
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In hep-th/0412322, Gaiotto, Strominger and Yin proposed a novel way of counting black hole microstates by counting the quantum mechanical ground states of probe branes placed in the near-horizon black hole background. We discuss the generalization of this proposal to the case of two-charge D0-D4 `small' black holes in type IIA. We also describe the construction of BPS D-brane probes in the near-horizon region of the 2-charge D1-D5 system in type IIB. Based on hep-th/0505176, hep-th/0607150.
description: 5 pages, contribution to the proceedings of the RTN project `Constituents, Fundamental Forces and Symmetries of the Universe' conference in Napoli, October 9 - 13, 2006
ปัญหาในการปฏิบัติทางบัญชีตามมาตรฐานการบัญชีไทยของธุรกิจพาณิชย์อิเล็กทรอนิกส์
Creators: name: ดวงดาว กานธนาวัฒน์
Publisher: name: วารสารวิจัย มสด สาขามนุษยศาสตร์และสังคมศาสตร์
Year: 2553
Subjects: การปฏิบัติทางบัญชี,มาตรฐานการบัญชีไทย,ธุรกิจพาณิชย์อิเล็กทรอนิกส์

description: 4, 6, วารสารวิจัย มสด สาขามนุษยศาสตร์และสังคมศาสตร์
Διαχείριση Κινδύνου και Χρηματοπιστωτική Κρίση. Μελέτη Διαχείρισης Κινδύνων στα Χρηματοπιστωτικά Ιδρύματα:
Creators: name: Καραγιαννοπούλου, Δέσποινα Κυριάκου
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Διαχείριση κινδύνων
Χρηματοοικονομικοί κίνδυνοι
Τεχνικές διαχείρισης κινδύνων
Risk management
Financial risks
Risk management techniques

description: Ο βασικός στόχος της παρούσας διπλωματικής εργασίας είναι η μελέτη των ελληνικών τραπεζικών ιδρυμάτων ως προς τα εργαλεία, τις μεθόδους και τα μέτρα διαχείρισης κινδύνου που αυτά εφαρμόζουν. Αναφορά γίνεται στην παγκόσμια οικονομική κρίση, στα διάφορα είδη χρηματοπιστωτικών κινδύνων, στις μεθόδους διαχείρισης κινδύνων που αναφέρονται στην ελληνική και ξένη βιβλιογραφία, στον τρόπο που λειτουργεί το ελληνικό τραπεζικό σύστημα και φυσικά στην ανάλυση της διαδικασίας διαχείρισης κινδύνων που ακολουθούν πέντε ελληνικές τράπεζες. Οι τράπεζες αυτές είναι η Eurobank EFG, η Alpha Bank, η Εθνική Τράπεζα της Ελλάδος, η Αγροτική Τράπεζα της Ελλάδος και τέλος η Τράπεζα Κύπρου. Τα απαραίτητα στοιχεία για την διεξαγωγή της έρευνας και της ανάλυσης αντλήθηκαν από τα δημοσιοποιημένα στοιχεία για την Βασιλεία ΙΙ των πιστωτικών ιδρυμάτων καθώς και από την επικοινωνία, με την χρήση ερωτηματολογίου, με τους υπαλλήλους των αρμόδιων τμημάτων.
description: The main objective of this thesis is the study of Greek banking institutions related to the tools, methods and risk management measures that implement. Reference is made to the global economic crisis, the various types of financial risks, risk management methods mentioned in Greek and foreign literature, the way the Greek banking system operates and of course the physical analysis of the risk management process that five major Greek banking institutions follow. These banks are Eurobank EFG, Alpha Bank, National Bank of Greece, Agricultural Bank of Greece, and finally the Bank of Cyprus. The necessary data to conduct the research and the analysis were drawn from publicly available data for Basel II of credit institutions as well as from the communication, using a questionnaire, with the officials of relevant departments.
ความคิดเห็นของครูต่อการดำเนินงานการประกันคุณภาพภายในของโรงเรียนในอำเภอชะอำ สังกัดสำนักงานเขตพื้นที่การศึกษาเพชรบุรี เขต 2 จังหวัดเพชรบุรี
Creators: name: สำเนา หนูเทียน
name: เทื้อน ทองแก้ว
Publisher: name: วารสารวิจัย มสด สาขามนุษยศาสตร์และสังคมศาสตร์
Year: 2553
Subjects: การประกันคุณภาพภายใน,ความคิดเห็น

description: 4, 6, วารสารวิจัย มสด สาขามนุษยศาสตร์และสังคมศาสตร์
NEUROPHYSIOLOGICAL PREDICTORS OF ACUTE HEMORRHAGIC STROKE
Creators: name: Sadullayeva, Kunduz
Publisher: name: Zenodo
Year: 2024

description: Stroke is the most important medical and social problem, due to its high proportion in morbidity, subsequent disability and mortality among patients of working age. The purpose of the study. Prediction of the course of the acute period of hemorrhagic parenchymal stroke (supratentorial hemispheric hematomas) based on neuroimaging data (localization, lateralization, hematoma volume) and neurophysiological data.
Compact, all-PM fiber integrated and alignment-free ultrafast Yb:fiber NALM laser with sub-femtosecond timing jitter
Creators: name: Ma, Yuxuan
name: Salman, Sarper H.
name: Li, Chen
name: Mahnke, Christoph
name: Hua, Yi
name: Droste, Stefan
name: Fellinger, Jakob
name: Mayer, Aline S.
name: Heckl, Oliver H.
name: Heyl, Christoph M.
name: Hartl, Ingmar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report a simple and compact design of a dispersion compensated mode-locked Yb:fiber oscillator based on a nonlinear amplifying loop mirror (NALM). The fully polarization maintaining (PM) fiber integrated laser features a chirped fiber Bragg grating (CFBG) for dispersion compensation and a fiber integrated compact non-reciprocal phase bias device, which is alignment-free. The main design parameters were determined by numerically simulating the pulse evolution in the oscillator and by analyzing their impact on the laser performance. Experimentally, we achieved an 88 fs compressed pulse duration with sub-fs timing jitter at 54 MHz repetition rate and 51 mW of output power with 5.5 * 10-5 [20 Hz, 1 MHz] integrated relative intensity noise (RIN). Furthermore, we demonstrate tight phase-locking of the laser's carrier-envelope offset frequency (fceo) to a stable radio frequency (RF) reference and of one frequency comb tooth to a stable optical reference at 291 THz.
description: 8 pages, 11 figures, journal manuscript
Boxy/peanut bulges : formation, evolution and properties
Creators: name: Athanassoula, E.
name: Martinez-Valpuesta, I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss the formation and evolution of boxy/peanut bulges (B/Ps) and present new simulations results. Orbital structure studies show that B/Ps are parts of bars seen edge-on, they have their origin in vertical instabilities of the disc material and they are somewhat shorter in extent than bars. When the bar forms it is vertically thin, but after a time of the order of a Gyr it experiences a vertical instability and buckles. At that time the strength of the bar decreases, its inner part becomes thicker, so that, seen edge-on, it acquires a peanut or boxy shape. A second buckling episode is seen in simulations with strong bars, accompanied by a further thickening of the B/P and a weakening of the bar. Quantitatively, this evolution depends considerably on the properties of the halo and particularly on the extent of its core. This influences the amount of angular momentum exchanged within the galaxy, emitted by near-resonant material in the bar region and absorbed by near-resonant material in the halo and in the outer disc. Haloes with small cores generally harbour stronger bars and B/Ps and they often witness double buckling.
description: 7 pages, 3 figures, contribution to the conference "Chaos in Astronomy", Athens, sept. 2007, eds. G. Contopoulos & P.A. Patsis
Double diffusion encoding and applications for biomedical imaging
Creators: name: Henriques, Rafael N.
name: Palombo, Marco
name: Jespersen, Sune N.
name: Shemesh, Noam
name: Lundell, Henrik
name: Ianuş, Andrada
Publisher: name: arXiv
Year: 2020
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: Diffusion Magnetic Resonance Imaging (dMRI) is one of the most important contemporary non-invasive modalities for probing tissue structure at the microscopic scale. The majority of dMRI techniques employ standard single diffusion encoding (SDE) measurements, covering different sequence parameter ranges depending on the complexity of the method. Although many signal representations and biophysical models have been proposed for SDE data, they are intrinsically limited by a lack of specificity. Advanced dMRI methods have been proposed to provide additional microstructural information beyond what can be inferred from SDE. These enhanced contrasts can play important roles in characterizing biological tissues, for instance upon diseases (e.g. neurodegenerative, cancer, stroke), aging, learning, and development. In this review we focus on double diffusion encoding (DDE), which stands out among other advanced acquisitions for its versatility, ability to probe more specific diffusion correlations, and feasibility for preclinical and clinical applications. Various DDE methodologies have been employed to probe compartment sizes (Section 3), decouple the effects of microscopic diffusion anisotropy from orientation dispersion (Section 4), probe displacement correlations, study exchange, or suppress fast diffusing compartments (Section 6). DDE measurements can also be used to improve the robustness of biophysical models (Section 5) and study intra-cellular diffusion via magnetic resonance spectroscopy of metabolites (Section 7). This review discusses all these topics as well as important practical aspects related to the implementation and contrast in preclinical and clinical settings (Section 9) and aims to provide the readers a guide for deciding on the right DDE acquisition for their specific application.
Failures of integral Springer's Theorem
Creators: name: Daans, Nicolas
name: Kala, Vítězslav
name: Krásenský, Jakub
name: Yatsyna, Pavlo
Publisher: name: arXiv
Year: 2024
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11E12, 11H55, 11R80

description: We discuss the phenomenon where an element in a number field is not integrally represented by a given positive definite quadratic form, but becomes integrally represented by this form over a totally real extension of odd degree. We prove that this phenomenon happens infinitely often, and, conversely, establish finiteness results about the situation when the quadratic form is fixed.
description: 10 pages, author accepted manuscript
Possible Neutrino-Antineutrino Oscillation Under Gravity and its Consequences
Creators: name: Mukhopadhyay, Banibrata
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that under gravity the effective masses for neutrino and antineutrino are different which opens a possible window of neutrino-antineutrino oscillation even if the rest masses of the corresponding eigenstates are same. This is due to CPT violation and possible to demonstrate if the neutrino mass eigenstates are expressed as a combination of neutrino and antineutrino eigenstates, as of the neutral kaon system, with the plausible breaking of lepton number conservation. In early universe, in presence of various lepton number violating processes, this oscillation might lead to neutrino-antineutrino asymmetry which resulted baryogenesis from the B-L symmetry by electro-weak sphaleron processes. On the other hand, for Majorana neutrinos, this oscillation is expected to affect the inner edge of neutrino dominated accretion disks around a compact object by influencing the neutrino sphere which controls the accretion dynamics, and then the related type-II supernova evolution and the r-process nucleosynthesis.
description: 3 pages; contribution to appear in the Proceedings of the MG11 Meeting on General Relativity, Berlin, July 23-29, 2006; prepared on the basis of the talk presented in the meeting; new version with updated references
Magneto-Acoustic Waves in Magnetic Twisted Flux Tube
Creators: name: Wu, Wei
name: Sych, Robert
name: Chen, Jie
name: Su, Jiang-tao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: At present, many works about magneto-hydrodynamics wave diagnostics in magnetic flux tubes are based on some pioneer works not considering the contributions of magnetic twist. Other works considered the effect on magneto-hydrodynamics waves, but the dispersion relationship they presented only gave the wave modes of m=0,1,2. The kink mode of m=-1 was absent. Therefore, in this work we would like to present a complete dispersion relationship that includes both magnetic twist and the wave mode of m=-1. Analogous to the m=+1 wave mode, the mode of m=-1 also exhibits the mode change at finite kr0, from body to surface mode. The phase speeds of this mode are usually less than those of m=+1 mode. The harmonic curves of m=+1/-1 modes in dispersion relationship diagrams are approximately symmetric in respect to a characteristic velocity, e.g. the tube velocity in flux tubes. Based on the present dispersion relationship, we revisit the issue of spiral wave patterns in sunspot and find that the magnetic twist has no great influence on their morphology in the frame of linear perturbation analysis.
description: 14 pages, 8 figures, accepted for publication in Research in Astronomy and Astrophysics
Owl Eyes: Spotting UI Display Issues via Visual Understanding
Creators: name: Liu, Zhe
name: Chen, Chunyang
name: Wang, Junjie
name: Huang, Yuekai
name: Hu, Jun
name: Wang, Qing
Publisher: name: arXiv
Year: 2020
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Graphical User Interface (GUI) provides a visual bridge between a software application and end users, through which they can interact with each other. With the development of technology and aesthetics, the visual effects of the GUI are more and more attracting. However, such GUI complexity posts a great challenge to the GUI implementation. According to our pilot study of crowdtesting bug reports, display issues such as text overlap, blurred screen, missing image always occur during GUI rendering on different devices due to the software or hardware compatibility. They negatively influence the app usability, resulting in poor user experience. To detect these issues, we propose a novel approach, OwlEye, based on deep learning for modelling visual information of the GUI screenshot. Therefore, OwlEye can detect GUIs with display issues and also locate the detailed region of the issue in the given GUI for guiding developers to fix the bug. We manually construct a large-scale labelled dataset with 4,470 GUI screenshots with UI display issues and develop a heuristics-based data augmentation method for boosting the performance of our OwlEye. The evaluation demonstrates that our OwlEye can achieve 85% precision and 84% recall in detecting UI display issues, and 90% accuracy in localizing these issues. We also evaluate OwlEye with popular Android apps on Google Play and F-droid, and successfully uncover 57 previously-undetected UI display issues with 26 of them being confirmed or fixed so far.
description: Accepted to 35th IEEE/ACM International Conference on Automated Software Engineering (ASE 20)
Large-scale magnetic fields in the inflationary universe
Creators: name: Bamba, Kazuharu
name: Sasaki, Misao
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The generation of large-scale magnetic fields is studied in inflationary cosmology. We consider the violation of the conformal invariance of the Maxwell field by dilatonic as well as non-minimal gravitational couplings. We derive a general formula for the spectrum of large-scale magnetic fields for a general form of the coupling term and the formula for the spectral index. The result tells us clearly the (necessary) condition for the generation of magnetic fields with sufficiently large amplitude.
description: 7 pages, no figure
Observational characterisation of large-scale transport and horizontal turbulent diffusivity in the quiet Sun
Creators: name: Rincon, F.
name: Barrère, P.
name: Roudier, T.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The Sun is a magnetic star, and the only spatio-temporally resolved astrophysical system displaying turbulent MHD thermal convection. This makes it a privileged object of study to understand fluid turbulence in extreme regimes and its interactions with magnetic fields. Global analyses of high-resolution solar observations provided by the NASA Solar Dynamics Observatory can shed light on the physical processes underlying large-scale emergent phenomena such as the solar dynamo cycle. Combining a Coherent Structure Tracking reconstruction of photospheric flows, based on photometric data, and a statistical analysis of virtual passive tracers trajectories advected by these flows, we characterise one of the most important such processes, turbulent diffusion, over an unprecedentedly long monitoring period of 6 consecutive days of a significant fraction of the solar disc. We first confirm, and provide a new global view of the emergence of a remarkable dynamical pattern of Lagrangian Coherent Structures tiling the entire surface. These structures act as transport barriers on the time and spatial scale of supergranulation and, by transiently accumulating particles and magnetic fields, regulate large-scale turbulent surface diffusion. We then further statistically characterise the turbulent transport regime using two different methods, and obtain an effective horizontal turbulent diffusivity $D=2-3\times10^8~\mathrm{m}^2~\mathrm{s}^{-1}$ on the longest timescales probed. This estimate is consistent with the transport coefficients required in large-scale mean-field solar dynamo models, and is in broad agreement with the results of global simulations. Our analysis may also have implications for understanding the connections between solar-surface, coronal and solar-wind dynamics, and provides valuable lessons to characterise turbulent transport in other, unresolved turbulent astrophysical systems.
description: 14 pages, 10 figures, submitted to A&A
Reactivity screening of single atoms on modified graphene surface -- From formation and scaling relations to catalytic activity
Creators: name: Jovanović, Aleksandar Z.
name: Mentus, Slavko V.
name: Skorodumova, Natalia V.
name: Pašti, Igor A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Single atom catalysts (SACs) present the ultimate level of catalyst utilization, which puts them in the focus of current research. For this reason, their understanding is crucial for the development of new efficient catalytic systems. Using Density Functional Theory calculations, model SACs consisted of nine metals (Ni, Cu, Ru, Rh, Pd, Ag, Ir, Pt and Au) on four different supports (pristine graphene, N- and B-doped graphene and graphene with single vacancy) were analyzed. Among them, only graphene with a single vacancy enables the formation of SACs, which are stable in terms of aggregation and dissolution under harsh conditions of electrocatalysis. Reactivity of models SACs was probed using atomic (hydrogen and A = C, N, O and S) and molecular adsorbates (AHx, x = 1, 2, 3 or 4, depending on A), giving nearly 600 different systems included in this study. Scaling relations between adsorption energies of A and AHx on model SACs were confirmed. However, the scaling is broken for the case of CH3. There is also an evident scaling between adsorption energies of atomic and molecular adsorbates on metals SAs supported by pristine, N-doped and B-doped graphene, which originates from similar electronic structures of SAs on these supports. Using the obtained data, we have analyzed the hydrogen evolution on the model SACs. Only M@graphene vacancy systems (excluding Ag and Au) are stable under hydrogen evolution conditions in highly acidic solutions. Additional interfacial effects are discussed and the need for proper theoretical treatment when studying SACs interactions with molecular species.
description: This is the pre-peer reviewed version of the following article: Jovanovi\'c et al., Adv. Mater. Interfaces 2020, 2001814, which has been published in final form at https://doi.org/10.1002/admi.202001814. The main text and supplementary information, 23 figures, 8 tables, 46 references, 41 pages in total
การจัดการแหล่งเรียนรู้ของจิ๋วเพื่อการเรียนรู้วิถีชิวิตไทย
Creators: name: บุษกร เข่งเจริญ
Publisher: name: วารสารวิจัย มสด สาขามนุษยศาสตร์และสังคมศาสตร์
Year: 2553
Subjects: การจัดการ,แหล่งเรียนรู้,ของจิ๋ว,มรดกวัฒนธรรม,วิถีชิวิตไทย

description: 4, 6, วารสารวิจัย มสด สาขามนุษยศาสตร์และสังคมศาสตร์
Measuring PAH Emission in Ultradeep Spitzer IRS Spectroscopy of High Redshift IR Luminous Galaxies
Creators: name: Teplitz, H. I.
name: Desai, V.
name: Armus, L.
name: Chary, R.
name: Marshall, J. A.
name: Colbert, J. W.
name: Frayer, D. T.
name: Pope, A.
name: Blain, A.
name: Spoon, H.
name: Charmandaris, V.
name: Scott, D.
name: ;
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The study of the dominant population of high redshift IR-luminous galaxies (10^11 - 10^12 Lsun at 1
description: accepted for publication in the ApJ
ความสัมพันธ์ระหว่างราคาน้ำมันและอุปสงค์รถยนต์ใหม่
Creators: name: พชร อภิพัฒน์สกุล
name: สุปรียา ควรเดชะคุปต์
Publisher: name: วารสารวิจัย มสด สาขามนุษยศาสตร์และสังคมศาสตร์
Year: 2553
Subjects: อุปสงค์รถยนต์ใหม่,ราคาน้ำมัน

description: 4, 6, วารสารวิจัย มสด สาขามนุษยศาสตร์และสังคมศาสตร์
New Determination of Fundamental Properties of Palomar 5 Using Deep DESI Imaging Data
Creators: name: Xu, Xin
name: Zou, Hu
name: Zhou, Xu
name: Nie, Jundan
name: Zhou, Zhimin
name: Ma, Jun
name: Zhang, Tianmeng
name: Wang, Jiali
name: Xue, Suijian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The legacy imaging surveys for the Dark Energy Spectroscopic Instrument project provides multiplecolor photometric data, which are about 2 mag deeper than the SDSS. In this study, we redetermine the fundamental properties for an old halo globular cluster of Palomar 5 based on these new imaging data, including structure parameters, stellar population parameters, and luminosity and mass functions. These characteristics, together with its tidal tails, are key for dynamical studies of the cluster and constraining the mass model of the Milky Way. By fitting the King model to the radial surface density profile of Palomar 5, we derive the core radius of $r_c$ = 2.96' $\pm$ 0.11', tidal radius of $r_t$ = 17.99' $\pm$ 1.49', and concentration parameter of $c$ = 0.78 $\pm$ 0.04. We apply a Bayesian analysis method to derive the stellar population properties and get an age of 11.508 $\pm$ 0.027 Gyr, metallicity of [Fe/H] = -1.798 $\pm$ 0.014, reddening of $E(B-V)$ = 0.0552 $\pm$ 0.0005, and distance modulus of $(m-M)_0$ = 16.835 $\pm$ 0.006. The main-sequence luminosity and mass functions for both the cluster center, and tidal tails are investigated. The luminosity and mass functions at different distances from the cluster center suggest that there is obvious spatial mass segregation. Many faint low-mass stars have been evaporated at the cluster center and the tidal tails are enhanced by low-mass stars. Both the concentration and relaxation times suggest that Palomar 5 is a totally relaxed system.
Conformational Temperature Characterizing the Folding of a Protein
Creators: name: Nakagawa, Naoko
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The time sequences of the molecular dynamics simulation for the folding process of a protein is analyzed with the inherent structure landscape which focuses on configurational dynamics of the system. Time dependent energy and entropy for inherent structures are introduced and from these quantities a conformational temperature is defined. The conformational temperature follows the time evolution of a slow relaxation process and reaches the bath temperature when the system is equilibrated. We show that the nonequilibrium system is described by two temperatures, one for fast vibration and the other for slow configurational relaxation, while the equilibrium system is by one temperature. The proposed formalism is applicable widely for the systems with many metastable states.
A Kinetic Model Describing the Processivity of Myosin-V
Creators: name: Skau, K. I.
name: Hoyle, R. B.
name: Turner, M. S
Publisher: name: arXiv
Year: 2006
Subjects: subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences

description: The precise details of how myosin-V coordinates the biochemical reactions and mechanical motions of its two head elements to engineer effective processive molecular motion along actin filaments remain unresolved. We compare a quantitative kinetic model of the myosin-V walk, consisting of five basic states augmented by two further states to allow for futile hydrolysis and detachments, with experimental results for run lengths, velocities, and dwell times and their dependence on bulk nucleotide concentrations and external loads in both directions. The model reveals how myosin-V can use the internal strain in the molecule to synchronise the motion of the head elements. Estimates for the rate constants in the reaction cycle and the internal strain energy are obtained by a computational comparison scheme involving an extensive exploration of the large parameter space. This scheme exploits the fact that we have obtained analytic results for our reaction network, e.g. for the velocity but also the run length, diffusion constant and fraction of backward steps. The agreement with experiment is often reasonable but some open problems are highlighted, in particular the inability of such a general model to reproduce the reported dependence of run length on ADP. The novel way that our approach explores parameter space means that any confirmed discrepancies should give new insights into the reaction network model.
description: 49 pages, 14 figures
Gravitoelectromagnetism in a complex Clifford algebra
Creators: name: Ulrych, S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A linear vector model of gravitation is introduced in the context of quantum physics as a generalization of electromagnetism. The gravitoelectromagnetic gauge symmetry corresponds to a hyperbolic unitary extension of the usual complex phase symmetry of electromagnetism. The reversed sign for the gravitational coupling is obtained by means of the pseudoscalar of the underlying complex Clifford algebra.
description: 10 pages Latex2e
Το ακαδημαϊκό και κοινωνικό προφίλ των μελλοντικών εκπαιδευτικών στις ΗΠΑ:
Creators: name: Σίντος, Βασίλειος Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Μελλοντικοί εκπαιδευτικοί
Ηνωμένες Πολιτείς της Αμερικής
Ακαδημαϊκό προφίλ
Future teachers
United States of America
Academic profile

description: H εργασία επιχειρεί αρχικά μία επισκόπηση της ιστορικής εξέλιξης του αμερικάνικου εκπαιδευτικού συστήματος από τις αρχές του 18ου αιώνα μέχρι και τις μέρες μας, εξετάζοντας την οργάνωση και το περιεχόμενό της δια μέσου των ετών. Ιδιαίτερη μνεία γίνεται στη ραγδαία αύξηση και μεταβολή των πανεπιστημίων και του φοιτητικού σώματος κατά τον 20ο αιώνα, και την επακόλουθη μαζικοποίηση της τριτοβάθμιας εκπαίδευσης αλλά και τις συνέπειες που αυτή επέφερε και συνεχίζει να επιφέρει. Σε αυτό ακριβώς το σημείο εξετάζεται το ερώτημα του επιπέδου των νεοεισαχθέντων φοιτητών στην μαζικοποιημένη αυτή ανώτερη εκπαίδευση και ειδικότερα του ακαδημαϊκού και κοινωνικού προφίλ του φοιτητών που επιλέγουν τις σπουδές στην εκπαίδευση. Με κεντρικό άξονα το SAT και την ανάλυση των σχετικών στατιστικών δεδομένων σκιαγραφείται η παραδοχή ότι ο κλάδος της εκπαίδευσης δεν αποτελεί πλέον ελκυστική κατεύθυνση για τους ακαδημαϊκά προικισμένους μαθητές.
description: The present essay makes an attempt at overviewing the historical evolution of the American educational system, from the early 18th century to the present day , examining its organization and content through all these years. Particular reference is made to the rapid growth and alteration of the university institutions and student bodies during 20th century, and the consequent massification of higher education and the consequences it has brought. At this point the issue of the academic and social profile of prospective education students is being examined along with the general question of how competent are the newly-admitted students in this era of mass higher education. Centered around SAT and the analysis of the relevant statistical data, the esaay finally reaches the conclusion that the academic field of education is hardly popular between academically gifted students.
Suwari Seoi Safety: from children Dojo to High Level Competition (Biomechanical Part)
Creators: name: Sacripanti, Attilio
Publisher: name: arXiv
Year: 2020
Subjects: subject: Popular Physics (physics.pop-ph)
subject: FOS: Physical sciences

description: In this paper we face the problem of safety connected to a class of throws that are more often applied in every level of competitions. However, to our knowledge it has never been a scientific study on this subject in Japan and, to our great amazement, in Europe, only one, and in very recent times. While the family of techniques that is applied with two knees on the ground has gone over time, increasing, without increasing the immediate traumas. this posed the problem if these techniques were really dangerous. It was decided to investigate in a comprehensive way, on the immediate traumas, by Biomechanics of the technique aimed at the safety of Tori, from children in the dojo up to high-level competitions. With the purpose to clarify: if the technique is dangerous, in its correct execution, for children and athletes, if the technique is dangerous for the accumulation of traumas in the long run build up a mathematical model of interaction between knees and Tatami. The experimental part was developed with a thermal imaging camera that allowed to highlight the actual impact surfaces and therefore to trace the stress received by the knees, both for the children and for the athletes of the Italian National Team. the results have made clear that, if well done and on a certified tatami, the technique has a negligible probability of immediate trauma.
description: 51 pages, 68 Figures, 19 Tables, 12 Diagrams
СЮЖЕТНО-РОЛЕВЫЕ ИГРЫ В РАЗВИТИЕ КРЕАТИВНОГО МЫШЛЕНИЯ ДОШКОЛЬНИКОВ
Creators: name: Ниязова, М.
name: Утениязова, М.
Publisher: name: Zenodo
Year: 2024

description: B данной статье представлены педагогические возможности сюжетно-ролевых игр в развитие креативного мышления дошкольников. А также дошкольному возрасту, который является благоприятным периодом для развития в ребенке креативного мышления.
COLLABORATIVE LEARNING THROUGH MATERIAL DEVELOPMENT
Creators: name: Kholturaeva, Guzal
Publisher: name: Zenodo
Year: 2024

description: The artіcle method іncludes a quantіtatіve analysіs whose forum ratіng was developed by applyіng a rubrіc. Іt іs not possіble to affіrm the superіorіty of one tool over another because each has іts own characterіstіcs and could be used for dіfferent purposes, besіdes havіng complementary functіons, they must organіze and complement each other to develop collaboratіve learnіng.
Hall Conductance of a Two-Dimensional Electron Gas with Spin-Orbit Coupling at the Presence of Lateral Periodic Potential
Creators: name: Demikhovskii, V. Ya.
name: Perov, A. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We evaluate the distribution of Hall conductances in magnetic subbands of two-dimensional electron gas with Rashba spin-orbit (SO) coupling placed in a periodic potential and perpendicular magnetic field. In this semiconductor structure the spin-orbit coupling mixes the states of different magnetic subbands and changes the distribution of their Hall conductances in comparison with the case of spinless particles. The calculations were made for semiconductor structures with a weak ($AlGaAs/GaAs$) and relatively strong ($GaAs/InGaAs$) SO and Zeeman interactions. The Hall conductances of fully occupied magnetic subbands depend on the system parameters and can be changed when neighboring subbands touch each other. It was shown that in the real semiconductor structures with relatively strong SO coupling the distribution of Hall conductance differs from the quantization law predicted by Thouless et al\cite{Thoul} for systems without spin-orbit coupling. In the case of weak SO interaction and relatively large lattice period the Hall conductance of magnetic subbands are the same as for spinless particles, but as the lattice period decreases and two neighboring subbands touch each other the distribution of Hall conductances is changed drastically.
description: 8 pages, 4 figures
Antibacterial factors in cows’ milk and colostrum : immunoglobulins and lactoferrin
Creators: name: Facon, Michel Jean
Publisher: name: University of British Columbia
Year: 2009

description: The objectives of this study were: 1) to test the antibacterial activity of a pepsin digest of bovine lactoferrin, containing the peptide lactoferricin, in complex media; 2) to detect specific antibodies to human enterotoxigenic Escherichia colt in bovine milk or colostrum; and 3) to investigate the potential of a cell culture system to study and estimate the biological activity of milk immunoglobulins. The pepsin digest of lactoferrin was bactericidal against Salmonella enteritidis in 1% peptone, but no substantial antibacterial activity could be demonstrated in trypticase soy broth or in some selected foods. Calcium at a concentration of 5 m?s’I was sufficient to inhibit the antibacterial activity of the digest. Addition of lysozyme or EDTA enhanced the antibacterial activity of the digest, but not sufficiently to overcome the effect of inhibitors in the foods of interest. The activity of the digest was also inhibited by bile salts. These findings raise doubts about the potential for addition of lactoferricin to foods. Antibodies to the colonization factor antigen CFA 1 of enterotoxigenic E. colt were detected in bovine colostrum by hemagglutination inhibition. Concentrations of antibodies to CFA 1, estimated by ELISA, ranged from 0.55 to 5.2 .tg/ml in colostrum samples of nonvaccinated cows. Samples of milk immune concentrates from vaccinated and non-vaccinated cows were also tested. Vaccination increased the concentration of specific antibodies relative to the total IgG content of the samples tested. Invasion of HeLa cells by Salmonella enteritidis, S. typhimurium and enteropathogenic E. coli was inhibited by addition of bovine colostrum to cell culture medium. Inhibition levels ranged from 73% to over 99%. The immunoglobulin-containing fraction, isolated from colostrum by affinity chromatography on a protein G-agarose column, inhibited invasion by S. typhimurium. An unidentified high molecular weight factor in the non-immunoglobulin fraction also inhibited invasion of HeLa cells. No inhibitory activity was found in low molecular weight fractions. The results suggest that bovine colostrum contains both immunoglobulin and non-immunoglobulin inbibitors of invasion of HeLa cells by the bacteria tested. HeLa cell cultures have the potential to be a convenient method for the study and evaluation of antibacterial properties of bovine milk.
On the abrupt change of the maximum likelihood state in a simplified stochastic thermohaline circulation system
Creators: name: Yang, Fang
name: Sun, Xu
name: Duan, Jinqiao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: The maximum likelihood state for a simplified stochastic thermohaline circulation model is investigated. It is shown that a jump occurs for the maximum likelihood state during transitions between two metastable states. The jump helps to explain the mechanism of the abrupt change in the climate systems as revealed by various climate records.
Η άτυχη γενιά;» Γυναίκες από την μουσουλμανική μειονότητα της Θράκης μιλούν για την εκπαίδευση, την εργασία και την κοινότητα τους:
Creators: name: Κιρατζή, Αϊσέ Γκιουνέρ
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Μειονότητες
Εκπαίδευση
Ρατσισμός
Minorities
Education
Racism

description: Μεταπτυχιακή διπλωματική εργασία που ερευνά ποιοτικά τις εμπειρίες έξι γυναικών από την μουσουλμανική μειονότητα της Θράκης μέσα στο εκπαιδευτικό σύστημά, το εργασιακό περιβάλλον και την μειονοτική κοινότητα. Τα ερωτήματα της έρευνας αναπτύσσονται γύρω από τις εξής θεματικές : την μειονοτική εκπαίδευση, την επιλογή σχολείου για τα παιδιά τους, τις εμπειρίες ρατσισμού στην εκπαίδευση, εργασία και κοινωνία , τον παράγοντα «φύλο» στις επιλογές ζωής τους και το αίσθημα ασφάλειας σε σύγκριση με το παρελθόν. Για την συλλογή των δεδομένων χρησιμοποιήθηκε η τεχνική της συνέντευξης και το απομαγνητοφωνημένο υλικό των συνεντεύξεων αναλύθηκε με τη χρήση της μεθόδου ανάλυσης περιεχομένου. Τέλος, η Κριτική Θεωρία της Φυλής αποτελεί το βασικό θεωρητικό εργαλείο για την ερμηνεία των δεδομένων της συγκεκριμένης έρευνας.
description: A Master’s thesis that studies qualitatively the experiences of six women from the muslim minority of Thrace throughout the educational system, the work environment and the muslim community. The questions of the study evolve around the following issues : the minority education, the choice of school for their children, the experiences of racism in education, work, society, the gender factor in their life choices and the feeling of safety as compared to the past. The technique of interview has been used for the data collection and the method of content analysis has been used for the analysis of the research material derived from the interviews. Finally, the Critical Race Theory is the basic theoretical tool used for the interpretation of the data of this study.
Maximizing Information Gain for the Characterization of Biomolecular Circuits
Creators: name: Prangemeier, Tim
name: Wildner, Christian
name: Hanst, Maleen
name: Koeppl, Heinz
Publisher: name: arXiv
Year: 2021
Subjects: subject: Molecular Networks (q-bio.MN)
subject: Systems and Control (eess.SY)
subject: Instrumentation and Detectors (physics.ins-det)
subject: Quantitative Methods (q-bio.QM)
subject: Applications (stat.AP)
subject: FOS: Biological sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Quantitatively predictive models of biomolecular circuits are important tools for the design of synthetic biology and molecular communication circuits. The information content of typical time-lapse single-cell data for the inference of kinetic parameters is not only limited by measurement uncertainty and intrinsic stochasticity, but also by the employed perturbations. Novel microfluidic devices enable the synthesis of temporal chemical concentration profiles. The informativeness of a perturbation can be quantified based on mutual information. We propose an approximate method to perform optimal experimental design of such perturbation profiles. To estimate the mutual information we perform a multivariate log-normal approximation of the joint distribution over parameters and observations and scan the design space using Metropolis-Hastings sampling. The method is demonstrated by finding optimal perturbation sequences for synthetic case studies on a gene expression model with varying reporter characteristics.
description: NanoCom 2018, accepted