cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Retracing the Flow of the Stream: Investigating Kodi Streaming Services
Creators: name: Bromley, Samuel Todd
name: Sheppard, John
name: Scanlon, Mark
name: Le-Khac, Nhien-An
Publisher: name: arXiv
Year: 2020
Subjects: subject: Multimedia (cs.MM)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Kodi is of one of the world's largest open-source streaming platforms for viewing video content. Easily installed Kodi add-ons facilitate access to online pirated videos and streaming content by facilitating the user to search and view copyrighted videos with a basic level of technical knowledge. In some countries, there have been paid child sexual abuse organizations publishing/streaming child abuse material to an international paying clientele. Open source software used for viewing videos from the Internet, such as Kodi, is being exploited by criminals to conduct their activities. In this paper, we describe a new method to quickly locate Kodi artifacts and gather information for a successful prosecution. We also evaluate our approach on different platforms; Windows, Android and Linux. Our experiments show the file location, artifacts and a history of viewed content including their locations from the Internet. Our approach will serve as a resource to forensic investigators to examine Kodi or similar streaming platforms.
Dipole oscillator strength distributions, sum rules, mean excitation energies, and isotropic van der Waals coefficients for benzene, pyridazine, pyrimidine, pyrazine, s-triazine, toluene, hexafluorobenzene, and nitrobenzene
Creators: name: Thakkar, Ajit J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Experimental, theoretical, and additive-model photoabsorption cross-sections combined with constraints provided by the Kuhn-Reiche-Thomas sum rule and the high-energy behavior of the dipole-oscillator-strength density are used to construct dipole oscillator strength distributions for benzene, pyridazine (1,2-diazine), pyrimidine (1,3-diazine), pyrazine (1,4-diazine), $s$-triazine (1,3,5-triazine), toluene (methylbenzene), hexafluorobenzene, and nitrobenzene. The distributions are used to predict dipole sum rules $S(k)$ for $-6 \le k \le 2$, mean excitation energies $I(k)$ for $-2 \le k \le 2$, and isotropic van der Waals $C_{6}$ coefficients. A popular combination rule for estimating $C_{6}$ coefficients for unlike interactions from the $C_{6}$ coefficients of the like interactions is found to be accurate to better than 1\% for 606 of 628 cases (96.4\%) in the test set.
Properties of Ellipticity Correlation with Atmospheric Structure from Gemini South
Creators: name: Asztalos, S.
name: de Vries, W. H.
name: Rosenberg, L. J
name: Treadway, T.
name: Burke, D.
name: Claver, C.
name: Saha, A.
name: Puxley, P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Cosmic shear holds great promise for a precision independent measurement of $Ω\rm_m$, the mass density of the universe relative to the critical density. The signal is expected to be weak, so a thorough understanding of systematic effects is crucial. An important systematic effect is the atmosphere: shear power introduced by the atmosphere is larger than the expected signal. Algorithms exist to extract the cosmic shear from the atmospheric component, though a measure of their success applied to a range of seeing conditions is lacking. To gain insight into atmospheric shear, Gemini South imaging in conjunction with ground condition and satellite wind data were obtained. We find that under good seeing conditions Point-Spread-Function (PSF) correlations persist well beyond the separation typical of high-latitude stars. Under these conditions, ellipticity residuals based on a simple PSF interpolation can be reduced to within a factor of a few of the shot-noise induced ellipticity floor. We also find that the ellipticity residuals are highly correlated with wind direction. Finally, we correct stellar shapes using a more sophisticated procedure and generate shear statistics from stars. Under all seeing conditions in our data set the residual correlations lie everywhere below the target signal level. For good seeing we find that the systematic error attributable to atmospheric turbulence is comparable in magnitude to the statistical error (shape noise) over angular scales relevant to present lensing surveys.
description: To appear in ApJ April 10, 2007, 659 1
РОЛЬ ЯЗЫКА В ПРОЦЕССЕ ОБЩЕНИЯ И КУЛЬТУРЫ
Creators: name: Фаттахова Дилорам Абдурахмоновна, к.п.н., доцент Национального университета Узбекистана имени Мирзо Улугбека
Publisher: name: Zenodo
Year: 2024

description: В данной статье рассматривается одно из наиболее актуальных проблем взаимосвязи языка и культуры, даётся анализ различных подходов в решении этой проблемы, затрагивается многозначное понятие культуры речи и нормы как одной из составляющих национальной культуры, акцентируя внимание на несомненной значимости языка как специфического способа существования культуры, фактора формирования культурных кодов.

        Ключевые слова: язык, культура, межкультурное общение, понятие, суждение, коммуникация.
Aporias of Subversion
Creators: name: Vujanovic, Branka
Publisher: name: KULT_online
Year: 2011

description: Based upon case studies from the fields of media production, literature, theatre, film and television, visual arts, and fashion, this volume questions the political meanings of subversive aesthetics today. Through the exemplary analysis of diverse strategies and aporias that surround them, the authors offer proposals for redefining the notion of subversion. This redefinition includes pluralization of the notion of subversion, focusing on its productive rather than disruptive dimension, and self-critical engagement with subversive tropes.
description: KULT_online, Nr. 28 (2011): KULT_online 28 (2011)
Coulomb force effects in low-energy $α$-deuteron scattering
Creators: name: Deltuva, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The $α$-proton Coulomb interaction is included in the description of $α$-deuteron scattering using the screening and renormalization approach in the framework of momentum-space three-particle equations. The technical reliability of the method is demonstrated. Large Coulomb-force effects are found.
description: To be published in Phys. Rev. C
Provoking Taboos: Representing Holocaust Art Today
Creators: name: Faisst, Julia
Publisher: name: KULT_online
Year: 2011

description: Since the mid-1990s, representations of the Holocaust in the visual arts, literature, and popular culture have undergone a paradigm shift, becoming both more transgressive and more scandalous. How and why should artistic and cultural representations of the Holocaust arouse today precisely the kind of emotional provocation that is peculiar to its subject matter? These are the main questions that the artist testimonies and scholarly essays collected by Sophia Komor and Susanne Rohr in The Holocaust, Art, and Taboo: Transatlantic Exchanges on the Ethics and Aesthetics of Representation, invite their readers to grapple with—in utterly engaging and thought-provoking ways.
description: KULT_online, Nr. 28 (2011): KULT_online 28 (2011)
X-ray linear dichroic ptychography
Creators: name: Lo, Yuan Hung
name: Zhou, Jihan
name: Rana, Arjun
name: Morrill, Drew
name: Gentry, Christian
name: Enders, Bjoern
name: Yu, Young-Sang
name: Sun, Chang-Yu
name: Shapiro, David
name: Falcone, Roger
name: Kapteyn, Henry
name: Murnane, Margaret
name: Gilbert, Pupa U. P. A.
name: Miao, Jianwei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Biominerals such as seashells, corals skeletons, bone, and enamel are optically anisotropic crystalline materials with unique nano- and micro-scale organization that translates into exceptional macroscopic mechanical properties, providing inspiration for engineering new and superior biomimetic structures. Here we use particles of Seriatopora aculeata coral skeleton as a model and demonstrate, for the first time, x-ray linear dichroic ptychography. We map the aragonite (CaCO3) crystal c-axis orientations in coral skeleton with 35 nm spatial resolution. Linear dichroic phase imaging at the O K-edge energy shows strong polarization-dependent contrast and reveals the presence of both narrow (< 35°) and wide (> 35°) c-axis angular spread in sub-micrometer coral particles. These x-ray ptychography results were corroborated using 4D scanning transmission electron nano-diffraction on the same particles. Evidence of co-oriented but disconnected corallite sub-domains indicates jagged crystal boundaries consistent with formation by amorphous nanoparticle attachment. Looking forward, we anticipate that x-ray linear dichroic ptychography can be applied to study nano-crystallites, interfaces, nucleation and mineral growth of optically anisotropic materials with sub-ten nanometers spatial resolution in three dimensions.
Interfacial studies in CNT fibre/TiO$_{2}$ photoelectrodes for efficient H$_{2}$ production
Creators: name: Moya, Alicia
name: Barawi, Mariam
name: Alemán, Belén
name: Zeller, Patrick
name: Amati, Matteo
name: Monreal-Bernal, Alfonso
name: Gregoratti, Luca
name: O'Shea, Víctor A. de la Peña
name: Vilatela, Juan J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: An attractive class of materials for photo(electro)chemical reactions are hybrids based on semiconducting metal oxides and nanocarbons (e.g. carbon nanotubes (CNT), graphene), where the nanocarbon acts as a highly-stable conductive scaffold onto which the nanostructured inorganic phase can be immobilised; an architecture that maximises surface area and minimises charge transport/transfer resistance. TiO$_{2}$/CNT photoanodes produced by atomic layer deposition on CNT fabrics are shown to be efficient for H$_{2}$ production ($0.07 μmol/min$ $H_{2}$ at $0.2V$ $vs Ag/AgCl$), nearly doubling the performance of TiO$_{2}$ deposited on planar substrates, with $100 \%$ Faradaic efficiency. The results are rationalised based on electrochemical impedance spectroscopy measurements showing a large reduction in photoelectron transport resistance compared to control samples and a higher surface area. The low TiO$_{2}$/CNT interfacial charge transfer resistance ($10 Ω$) is consistent with the presence of an interfacial Ti-O-C bond and corresponding electronic hybridisation determined by spatially-resolved Scanning Photoelectron Microscopy (SPEM) using synchrotron radiation.
Measurement of the charge asymmetry in semileptonic Bs decays
Creators: name: D0 Collaboration
name: Abazov, V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We have performed the first direct measurement of the time integrated flavor untagged charge asymmetry in semileptonic Bs decays, Asl(unt), by comparing the decay rate of Bs --> mu+ Ds- nu X, where Ds- --> phi pi- and phi --> K+K-, with the charge-conjugate Bs-bar decay rate. This sample was selected from 1.3/fb of data collected by the D0 experiment in RunII of the Fermilab Tevatron collider. We obtain Asl(unt) = [1.23 +- 0.97(stat) +- 0.17(syst)]*10^-2. Assuming that Delta(M_s)/Gamma_s >> 1 and Delta(Gamma_s)/(2 Gamma_s) < 1, this result can be translated into a measurement on the CP-violating phase in Bs mixing: Delta(Gamma_s)/Delta(M_s)*tan(phi_s) = [2.45 +- 1.93(stat) +- 0.35(syst)]*10^-2.
description: Submitted to Phys. Rev. Lett
Stoichiometry controls the dynamics of liquid condensates of associative proteins
Creators: name: Ronceray, Pierre
name: Zhang, Yaojun
name: Liu, Xichong
name: Wingreen, Ned S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Multivalent associative proteins with strong complementary interactions play a crucial role in phase separation of intracellular liquid condensates. We study the internal dynamics of such "bond-network" condensates comprised of two complementary proteins via scaling analysis and molecular dynamics. We find that when stoichiometry is balanced, relaxation slows down dramatically due to a scarcity of alternative partners following a bond break. This microscopic slow-down strongly affects the bulk diffusivity, viscosity and mixing, which provides a means to experimentally test our predictions.
U-Net and its variants for medical image segmentation: theory and applications
Creators: name: Siddique, Nahian
name: Sidike, Paheding
name: Elkin, Colin
name: Devabhaktuni, Vijay
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: U-net is an image segmentation technique developed primarily for medical image analysis that can precisely segment images using a scarce amount of training data. These traits provide U-net with a very high utility within the medical imaging community and have resulted in extensive adoption of U-net as the primary tool for segmentation tasks in medical imaging. The success of U-net is evident in its widespread use in all major image modalities from CT scans and MRI to X-rays and microscopy. Furthermore, while U-net is largely a segmentation tool, there have been instances of the use of U-net in other applications. As the potential of U-net is still increasing, in this review we look at the various developments that have been made in the U-net architecture and provide observations on recent trends. We examine the various innovations that have been made in deep learning and discuss how these tools facilitate U-net. Furthermore, we look at image modalities and application areas where U-net has been applied.
description: 42 pages, in IEEE Access
Magnetohydrodynamic simulations of the collapsar model for early and late evolution of gamma-ray bursts
Creators: name: Proga, Daniel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: I present results from magnetohydrodynamic (MHD) simulations of a gaseous envelope collapsing onto a black hole. These results support the notion that the collapsar model is one of most promising scenarios to explain the huge release of energy in a matter of seconds associated with Gamma Ray Bursts (GRB). Additionally, the MHD simulations show that at late times, when the mass supply rate is expected to decrease, the region in the vicinity of the black hole can play an important role in determining the rate of accretion, its time behaviour, and ultimately the energy output. In particular, the magnetic flux accumulated around the black hole can repeatedly stop and then restart the energy release. As proposed by Proga and Zhang, the episode or episodes of reoccurring of accretion processes can correspond to X-ray flares discovered recently in a number of GRBs.
description: 6 pages, to appear in Philosophical Transactions A
Understanding the Frequency Distribution of Mechanically Stable Disk Packings
Creators: name: Gao, Guo-Jie
name: Blawzdziewicz, Jerzy
name: O'Hern, Corey S.
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: Relative frequencies of mechanically stable (MS) packings of frictionless bidisperse disks are studied numerically in small systems. The packings are created by successively compressing or decompressing a system of soft purely repulsive disks, followed by energy minimization, until only infinitesimal particle overlaps remain. For systems of up to 14 particles most of the MS packings were generated. We find that the packings are not equally probable as has been assumed in recent thermodynamic descriptions of granular systems. Instead, the frequency distribution, averaged over each packing-fraction interval $Δϕ$, grows exponentially with increasing $ϕ$. Moreover, within each packing-fraction interval MS packings occur with frequencies $f_k$ that differ by many orders of magnitude. Also, key features of the frequency distribution do not change when we significantly alter the packing-generation algorithm--for example frequent packings remain frequent and rare ones remain rare. These results indicate that the frequency distribution of MS packings is strongly influenced by geometrical properties of the multidimensional configuration space. By adding thermal fluctuations to a set of the MS packings, we were able to examine a number of local features of configuration space near each packing including the time required for a given packing to break to a distinct one, which enabled us to estimate the energy barriers that separate one packing from another. We found a positive correlation between the packing frequencies and the heights of the lowest energy barriers $ε_0$. We also examined displacement fluctuations away from the MS packings to correlate the size and shape of the local basins near each packing to the packing frequencies.
description: 21 pages, 20 figures, 1 table
Total energies from variational functionals of the Green function and the renormalized four-point vertex
Creators: name: van Leeuwen, Robert
name: Dahlen, Nils Erik
name: Stan, Adrian
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We derive variational expressions for the grand potential or action in terms of the many-body Green function $G$ which describes the propagation of particles and the renormalized four-point vertex $Γ$ which describes the scattering of two particles in many-body systems. The main ingredient of the variational functionals is a term we denote as the $Ξ$-functional which plays a role analogously to the usual $Φ$-functional studied by Baym (G.Baym, Phys.Rev. 127, 1391 (1962)) in connection with the conservation laws in many-body systems. We show that any $Ξ$-derivable theory is also $Φ$-derivable and therefore respects the conservation laws. We further set up a computational scheme to obtain accurate total energies from our variational functionals without having to solve computationally expensive sets of self-consistent equations. The input of the functional is an approximate Green function $\tilde{G}$ and an approximate four-point vertex $\tildeΓ$ obtained at a relatively low computational cost. The variational property of the functional guarantees that the error in the total energy is only of second order in deviations of the input Green function and vertex from the self-consistent ones that make the functional stationary. The functionals that we will consider for practical applications correspond to infinite order summations of ladder and exchange diagrams and are therefore particularly suited for applications to highly correlated systems. Their practical evaluation is discussed in detail.
description: 21 pages, 10 figures. Physical Review B (accepted)
Microscopic shell-model description of the exotic nucleus ^{16}C
Creators: name: Fujii, S.
name: Mizusaki, T.
name: Otsuka, T.
name: Sebe, T.
name: Arima, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The structure of the neutron-rich carbon nucleus ^{16}C is described by introducing a new microscopic shell model of no-core type. The model space is composed of the 0s, 0p, 1s0d, and 1p0f shells. The effective interaction is microscopically derived from the CD-Bonn potential and the Coulomb force through a unitary transformation theory. Calculated low-lying energy levels of ^{16}C agree well with the experiment. The B(E2;2_{1}^{+} \to 0_{1}^{+}) value is calculated with the bare charges. The anomalously hindered B(E2) value for ^{16}C, measured recently, is well reproduced.
description: 14 pages, 4 figures, considerable results and discussion are added, but the main conclusion is unchanged, accepted for publication in Phys. Lett. B
Spatially resolved direct method metallicity in a high-redshift analogue local galaxy: temperature structure impact on metallicity gradients
Creators: name: Cameron, Alex J.
name: Yuan, Tiantian
name: Trenti, Michele
name: Nicholls, David C.
name: Kewley, Lisa J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate how HII region temperature structure assumptions affect "direct-method" spatially-resolved metallicity observations using multispecies auroral lines in a galaxy from the SAMI Galaxy Survey. SAMI609396B, at redshift $z=0.018$, is a low-mass galaxy in a minor merger with intense star formation, analogous to conditions at high redshifts. We use three methods to derive direct metallicities and compare with strong-line diagnostics. The spatial metallicity trends show significant differences among the three direct methods. Our first method is based on the commonly used electron temperature $T_e$([OIII]) from the [OIII]$λ$4363 auroral line and a traditional $T_e$([OII]) -- $T_e$([OIII]) calibration. The second method applies a recent empirical correction to the O$^+$ abundance from the [OIII]/[OII] strong-line ratio. The third method infers the $T_e$([OII]) from the [SII]$λλ$4069,76 auroral lines. The first method favours a positive metallicity gradient along SAMI609396B, whereas the second and third methods yield flattened gradients. Strong-line diagnostics produce mostly flat gradients, albeit with unquantified contamination from shocked regions. We conclude that overlooked assumptions about the internal temperature structure of HII regions in the direct method can lead to large discrepancies in metallicity gradient studies. Our detailed analysis of SAMI609396B underlines that high-accuracy metallicity gradient measurements require a wide array of emission lines and improved spatial resolutions in order to properly constrain excitation sources, physical conditions, and temperature structures of the emitting gas. Integral-field spectroscopic studies with future facilities such as JWST/NIRSpec and ground-based ELTs will be crucial in minimising systematic effects on measured gradients in distant galaxies.
description: 21 pages, 14 figures, Accepted for Publication in MNRAS
Πολιτισμικές διαφορές κατά τον έλεγχο ικανότητας παραγωγής προφορικού λόγου στο ΚΠΓ: εικόνα και προφορική διαμεσολάβηση στην αγγλική, γαλλικά και ιταλική γλώσσα
Creators: name: Κουμουρίδου, Νικολέτα Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: πολιτισμός
προφορική διαμεσολάβηση
ΚΠΓ
culture
oral mediation
KPG

description: Η παρούσα έρευνα ασχολείται με τη χρήση πολιτισμικών στοιχείων σε εικόνα και γλωσσικό κείμενο κατά τον έλεγχο ικανότητας παραγωγής προφορικού λόγου στο ΚΠΓ στην αγγλική, γαλλική και ιταλική γλώσσα εξέτασης. Το corpus της έρευνας αποτελείται από τα θέματα προς εξέταση του ΚΠΓ της εξεταστικής περιόδου Μαΐου 2014 του τρίτου και τελευταίου μέρους της προφορικής εξέτασης που αποτελείται από γλωσσικό κείμενο γραμμένο στη γλώσσα πηγή και συνοδευόμενο από μια ή περισσότερες εικόνες. Η ανάλυση περιεχομένου των 33 γλωσσικών κειμένων και των 41 συνοδευτικών τους εικόνων, οδηγεί στον εντοπισμό των πολιτισμικών δεικτών σε κείμενο και εικόνα. Πάνω στα γλωσσικά κείμενα σημειώνονται χρωματικά οι πολιτισμικές αναφορές που γίνονται για κάθε γλώσσα. Όσον αφορά στις εικόνες γίνεται μια ανάλυση ως προς την τεχνοτροπία τους. Τα μητρώα ανάλυσης που χρησιμοποιούνται, δηλαδή το εργαλείο ανάλυσης είναι της Χριστοδούλου (2003). Η συγκριτική ανάλυση σε γλωσσικό κείμενο και εικόνα γίνεται ανά γλώσσα αλλά και μεταξύ των γλωσσών. Η σχηματική παρουσίαση των δεδομένων βοηθάει στην κατανόηση των νοημάτων και των αναλύσεων, συγκεκριμένα περιλαμβάνονται 8 πίνακες.
description: The aim of the present thesis was the study of cultural features in pictures and text during the examination of oral production in the certification of KPG for the English, the French and Italian language. We examined the third part of the examination of the period of May 2014. Then we presented the features that include the mediation part of the examination. Furthermore, we analyzed the models concerning the techniques used to classify the texts and pictures. We also examined the compilation of texts and pictures among the three languages. Another aim of this study was to examine the cultural features that constitute the examination based on the characteristics of the three cultures.
Tρισδιάστατη αποτύπωση του Αρρηφορίου της Ακρόπολης
Creators: name: Καρακάση, Ελπίδα Στυλιανού
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Αρρηφόριον της Ακρόπολης Αθηνών
Τρισδιάστατη Αποτύπωση
Τρισδιάστατος Σαρωτής
Arrephoria of Acropolis of Athens
3D Surveying
3D Laser Scanner

description: Η παρούσα μεταπτυχιακή εργασία έχει ως αντικείμενο την τρισδιάστατη αποτύπωση του Αρρηφόριου, ιστορικού κτίσματος της Ακρόπολης, και την απόδοση του τρισδιάστατου μοντέλου του με ακρίβεια καθώς και την παραγωγή των σχεδίων της όψης, της κάτοψης και των οριζόντιων και κάθετων διατομών του. Με στόχο την καλύτερη δυνατή απόδοση των λεπτομερειών των διασωθέντων κτισμάτων και την εξαγωγή του τρισδιάστατου μοντέλου της υφιστάμενης κατάστασης του, πραγματοποιήθηκε αποτύπωση με τον τρισδιάστατο σαρωτή Laser Scanner Faro Focus 3D και επεξεργασία των μετρήσεων με τα λογισμικά Faro Scene και Pointools Edit Pro. Στην εργασία αρχικά γίνονται αναφορές στις αποτυπώσεις των μνημείων και στα κτίσματα που περιβάλουν τον ξακουστό Βράχο. Έπειτα παρουσιάζονται τα χαρακτηριστικά λειτουργίας των τρισδιάστατων σαρωτών και δίνεται έμφαση στην αρχή λειτουργίας του Laser Scanner Faro Focus 3D. Περιγράφεται ακόμα αναλυτικά ο τρόπος διεξαγωγής της τρισδιάστατης αποτύπωσης στο πεδίο και η μέθοδος επεξεργασίας των αποτελεσμάτων που ακολουθήθηκε. Τέλος αποδίδονται τα σχέδια και οι ορθοεικόνες που παράχθηκαν μαζί με τα συμπεράσματα.
description: This postgraduate thesis subject is the three-dimensional surveying of Arrephoria, a historical building of the Acropolis, and the creation of three-dimensional model of it, with precision and the drawings which are the top and bottom view plan and the horizontal and vertical sections plans. Aiming the best output of the details of buildings that have been rescued and the export of the three-dimensional model of the current condition, the monument measured with the three-dimensional Laser Scanner Faro Focus 3D and its measurements processed with the software Faro Scene and Pointools Edit Pro. Firstly general references to surveying of monuments and buildings that surround the famous Rock are presented. Then the thesis presents the operating characteristics of three-dimensional scanners, and emphasizes in the operation principle of Laser Scanner Faro Focus 3D. After that the pattern of three-dimensional surveying in the field described in detail and the processing method of the results followed. In the end the design plans and the orthoimages along with the conclusions are given.
Fluid-solid Floquet stability analysis of self-propelled heaving foils
Creators: name: Ramos, Luis Benetti
name: Marquet, Olivier
name: Bergmann, Michel
name: Iollo, Angelo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We investigate the role of linear mechanisms in the emergence of nonlinear horizontal self-propelled states of a heaving foil in a quiescent fluid. Two states are analyzed: a periodic state of unidirectional motion and a quasi-periodic state of slow back & forth motion around a mean horizontal position. The states emergence is explained through a fluid-solid Floquet stability analysis of the non-propulsive symmetric base solution. Unlike a purely-hydrodynamic analysis, our analysis accurately determine the locomotion states onset. An unstable synchronous mode is found when the unidirectional propulsive solution is observed. The obtained mode has a propulsive character, featuring a mean horizontal velocity and an asymmetric flow that generates a horizontal force accelerating the foil. An unstable asynchronous mode, also featuring flow asymmetry and a non-zero velocity, is found when the back & forth state is observed. Its associated complex multiplier introduces a slow modulation of the flapping period, agreeing with the quasi-periodic nature of the back & forth regime. The temporal evolution of this perturbation shows how the horizontal force exerted by the flow is alternatively propulsive or resistive over a slow period. For both modes, an analysis of the velocity and force perturbation time-averaged over the flapping period is used to establish physical instability criteria. The behaviour for large solid-to-fluid density ratio of the modes is thus analyzed. The asynchronous fluid-solid mode converges towards the purely-hydrodynamic one, whereas the synchronous mode becomes marginally unstable in our analysis not converging to the purely-hydrodynamic analysis where it is never destabilised.
Description of Multipole in f-Electron Systems
Creators: name: Kusunose, Hiroaki
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A systematic description of multipole degrees of freedom is discussed on the basis of the Stevens' operator-equivalent technique. The generalized Stevens' multiplicative factors are derived for all of the electric and the magnetic multipoles relevant to f-electron systems. With extensive use of the Stevens' factors, we express the spatial dependences of the electric and the magnetic fields, and the electric and the magnetic charge densities of localized f electrons. The latter is utilized to draw wave functions including their magnetic profile in addition to their shape with the charge density. The definite relation between the operators as quantum-mechanical variables in a multipole exchange model and the multipole moments in expansion of electromagnetic fields is given. The general treatments for the exchange model with the RPA susceptibility and the Ginzburg-Landau free-energy expansion are discussed, using CexLa1-xB6 as a typical example. The representative formula of the vector spherical harmonics are summarized, which are suitable basis for vector fields in the spherical expansion.
description: 18 pages, 3 tables, 6 figures, submitted to J. Phys. Soc. Jpn
ТЕКСТ В ЛИНГВОКУЛЬТУРОЛОГИЧЕСКОМ АСПЕКТЕ ИЗУЧЕНИЯ
Creators: name: Ахмедова Мукаддас Ходиметовна, канд. пед. наук, доцент, Национальный университет Узбекистана
Publisher: name: Zenodo
Year: 2024

description: Текст способен оказать неоценимую услугу в процессе обучения иностранному языку, потому что все методические подходы, принципы и задачи, взятые в комплексе, реализуются именно в ходе работы над текстом. Разбор текста предполагает использование инновационных образовательных подходов, потому что оригинальный текст является сферой пересечения и взаимодействия личностных смыслов, общественных и психологических мотивов.

         Ключевые слова: текст, грамматический и лексический материал, коммуникативная компетенция, национальная культура
Space Missions for Astronomy and Astrophysics in Korea: Past, Present, and Future
Creators: name: Seon, Kwang-il
name: Han, Wonyong
name: Lee, Young-Wook
name: Lee, Hyung Mok
name: Kim, Min Bin
name: Park, I. H.
name: Jeong, Woong-Seob
name: Cho, Kyung-Suk
name: Lee, Jae Jin
name: Lee, Dae-Hee
name: Kwak, Kyujin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We review the history of space mission in Korea focusing on the field of astronomy and astrophysics. For each mission, scientific motivation and achievement are reviewed together with some technical details of the program including mission schedule. This review includes the ongoing and currently approved missions as well as some planned ones. Within the admitted limitations of authors' perspectives, some comments on the future direction of space program for astronomy and astrophysics in Korea are made at the end of this review.
description: 29 pages, 31 figures, and 4 tables. To be published in the special issue of Journal of Korean Physical Society (JKPS) to celebrate the 25th anniversary of Astrophysics Division of Korean Physical Society (KPS)
Fulling-Davies-Unruh effect and spontaneous excitation of an accelerated atom interacting with a quantum scalar field
Creators: name: Zhu, Zhiying
name: Yu, Hongwei
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate, from the point of view of a coaccelerated frame, the spontaneous excitation of a uniformly accelerated two-level atom interacting with a scalar field in a thermal state at a finite temperature $T$ and show that the same spontaneous excitation rate for the uniformly accelerated atom in the Minkowski vacuum obtained in the inertial frame can only be recovered in the coaccelerated frame assuming a thermal bath at the Fulling-Davies-Unruh temperature $T_{FDU}=a/2π$ for what appears to be the Minkowski vacuum to the inertial observer. Our discussion provides another example of a physical process different from those examined before in the literature to better understand the Fulling-Davies-Unruh effect.
description: 12 pages, no figures, accepted for publication in PLB
Monte Carlo study of the antiferromagnetic three-state Potts model with staggered polarization field on the square lattice
Creators: name: Okabe, Yutaka
name: Otsuka, Hiromi
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Using the Wang-Landau Monte Carlo method, we study the antiferromagnetic (AF) three-state Potts model with a staggered polarization field on the square lattice. We obtain two phase transitions; one belongs to the ferromagnetic three-state Potts universality class, and the other to the Ising universality class. The phase diagram obtained is quantitatively consistent with the transfer matrix calculation. The Ising transition in the large nearest-neighbor interaction limit has been made clear by the detailed analysis of the energy density of states.
description: accepted for publication in J. Phys. A
Superconductivity from Luttinger surfaces: Emergent $\infty$-body SYK physics
Creators: name: Setty, Chandan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Superconductivity (cond-mat.supr-con)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The pairing of two electrons on a Fermi surface due to an infinitesimal attraction between them always results in a superconducting instability at zero temperature ($T=0$). The equivalent question of pairing instability on a Luttinger surface (LS) -- a contour of zeros of the propagator -- instead leads to a quantum critical point (QCP) that separates a non-Fermi liquid (NFL) and superconductor. A surprising and little understood aspect of pair fluctuations at this QCP is that their thermodynamics maps to that of the Sachdev-Ye-Kitaev (SYK) model in the strong coupling limit. Here, we offer a simple justification for this mapping by demonstrating that (i) LS models share the reparametrization symmetry of the $q\rightarrow \infty$ SYK model with $q$-body interactions \textcolor{black}{close to the LS}, and (ii) the enforcement of gauge invariance results in a $\frac{1}{\sqrtτ}$ ($τ\sim T^{-1}$) behavior of the fluctuation propagator near the QCP, as is a feature of the fundamental SYK fermion.
description: 7+ pages, 3 figures
Single quantum dot nanowire LEDs
Creators: name: Minot, Ethan D.
name: Kelkensberg, Freek
name: van Kouwen, Maarten
name: van Dam, Jorden A.
name: Kouwenhoven, Leo P.
name: Zwiller, Valery
name: Borgstrom, Magnus T.
name: Wunnicke, Olaf
name: Verheijen, Marcel A.
name: Bakkers, Erik P. A. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report reproducible fabrication of InP-InAsP nanowire light emitting diodes in which electron-hole recombination is restricted to a quantum-dot-sized InAsP section. The nanowire geometry naturally self-aligns the quantum dot with the n-InP and p-InP ends of the wire, making these devices promising candidates for electrically-driven quantum optics experiments. We have investigated the operation of these nano-LEDs with a consistent series of experiments at room temperature and at 10 K, demonstrating the potential of this system for single photon applications.
Mapping Monte Carlo to Langevin dynamics: A Fokker-Planck approach
Creators: name: Cheng, X. Z.
name: Jalil, M. B. A.
name: Lee, Hwee Kuan
name: Okabe, Yutaka
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We propose a general method of using the Fokker-Planck equation (FPE) to link the Monte-Carlo (MC) and the Langevin micromagnetic schemes. We derive the drift and disusion FPE terms corresponding to the MC method and show that it is analytically equivalent to the stochastic Landau-Lifshitz-Gilbert (LLG) equation of Langevin-based micromagnetics. Subsequent results such as the time quantification factor for the Metropolis MC method can be rigorously derived from this mapping equivalence. The validity of the mapping is shown by the close numerical convergence between the MC method and the LLG equation for the case of a single magnetic particle as well as interacting arrays of particles. We also found that our Metropolis MC is accurate for a large range of damping factors $α$, unlike previous time-quantified MC methods which break down at low $α$, where precessional motion dominates.
description: 4 pages, 4 figures. Accepted for publication in Phys. Rev. Lett
A search for H$_2$O masers in 100 active dwarf galaxies
Creators: name: Rosenthal, M. J.
name: Zaw, I.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the results of the first dedicated survey for 22 GHz H$_2$O maser emission in dwarf galaxies outside of the local group, with the aim of discovering disc masers. Studies of disc masers yield accurate and precise measurements of black hole mass, and such measurements in dwarf galaxies would be key to understanding the low-mass end of BH-galaxy co-evolution. We used the Green Bank Telescope to survey 100 nearby ($z \lesssim 0.055$) dwarf galaxies ($M_* \lesssim 10^{9.5}~M_{\odot}$) with optical emission line ratios indicative of accretion onto a massive black hole. We detected no new masers down to a limit of $\sim$12 mJy (5$σ$). We compared the properties of our sample with those of $\sim$1,850 known detections and non-detections in massive galaxies. We find, in agreement with previous studies, that masers are preferentially hosted by Seyferts and highly-obscured, [O III]-bright AGNs. Our sample has fewer Seyferts, is less obscured, and is [O III]-faint. Though the overall maser detection rate is $\sim$3% in massive galaxies, the predicted rate for our sample, weighted by its optical properties, is $\sim$0.6-1.7%, corresponding to a probability of making no detections of $\sim$20-50%. We also found a slight increase in the detection rate with increased stellar mass in previously surveyed galaxies. However, further observations are required to discern whether there is an intrinsic difference between the maser fraction in active dwarf galaxies and in their massive counterparts for the same AGN properties.
description: 18 pages, 9 figures. Accepted to MNRAS
Quark Masses and Mixing with A4 Family Symmetry
Creators: name: Ma, Ernest
name: Sawanaka, Hideyuki
name: Tanimoto, Morimitsu
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The successful A4 family symmetry for leptons is applied to quarks, motivated by the quark-lepton assignments of SU(5). Realistic quark masses and mixing angles are obtained, in good agreement with data. In particular, we find a strong correlation between |V_{ub}| and the CP phase beta, thus allowing for a decisive future test of this model.
description: 9 pages, 2 figures, some discussions as to quarks and leptons are added
Mechanical behavior of multi-cellular spheroids under osmotic compression
Creators: name: Dolega, Monika
name: Zurlo, Giuseppe
name: Goff, Magali Le
name: Greda, Magdalena
name: Verdier, Claude
name: Joanny, Jean-François
name: Cappello, Giovanni
name: Recho, Pierre
Publisher: name: arXiv
Year: 2020
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Tissues and Organs (q-bio.TO)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: The internal and external mechanical environment plays an important role in tumorogenesis. As a proxy of an avascular early state tumor, we use multicellular spheroids, a composite material made of cells, extracellular matrix and permeating fluid. We characterize its effective rheology at the timescale of minutes to hours by compressing the aggregates with osmotic shocks and modeling the experimental results with an active poroelastic material that reproduces the stress and strain distributions in the aggregate. The model also predicts how the emergent bulk modulus of the aggregate as well as the hydraulic diffusion of the percolating interstitial fluid are modified by the preexisting active stress within the aggregate. We further show that the value of these two phenomenological parameters can be rationalized by considering that, in our experimental context, the cells are effectively impermeable and incompressible inclusions nested in a compressible and permeable matrix.
The Extended Bose Hubbard Model on the Two Dimensional Honeycomb Lattice
Creators: name: Gan, Jing Yu
name: Wen, Yu Chuan
name: Ye, Jinwu
name: Li, Tao
name: Yang, Shi-Jie
name: Yu, Yue
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We study the extended Bose-Hubbard model on a two-dimensional honeycomb lattice by using large scale quantum Monte Carlo simulations. We present the ground state phase diagrams for both the hard-core case and the soft-core case. For the hard-core case, the transition between $ρ=1/2$ solid and the superfluid is first order and the supersolid state is unstable towards phase separation. For the soft-core case, due to the presence of the multiple occupation, a stable particle induced supersolid (SS-p) phase emerges when $1/2
description: 6pages, 6figures
Delay Sensitive Task Offloading in the 802.11p Based Vehicular Fog Computing Systems
Creators: name: Wu, Qiong
name: Liu, Hanxu
name: Wang, Ruhai
name: Fan, Pingyi
name: Fan, Qiang
name: Li, Zhengquan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Vehicular fog computing (VFC) is envisioned as a promising solution to process the explosive tasks in autonomous vehicular networks. In the VFC system, task offloading is the key technique to process the computation-intensive tasks efficiently. In the task offloading, the task is transmitted to the VFC system according to the 802.11p standard and processed by the computation resources in the VFC system. The delay of task offloading, consisting of the transmission delay and computing delay, is extremely critical especially for some delay-sensitive applications. Furthermore, the long-term reward of the system (i.e., jointly considers the transmission delay, computing delay, available resources, and diversity of vehicles and tasks) becomes a significantly important issue for providers. Thus, in this article, we propose an optimal task offloading scheme to maximize the long-term reward of the system where 802.11p is employed as the transmission protocol for the communications between vehicles. Specifically, a task offloading problem based on a semi-Markov decision process (SMDP) is formulated. To solve this problem, we utilize an iterative algorithm based on the Bellman equation to approach the desired solution. The performance of the proposed scheme has been demonstrated by extensive numerical results.
description: This paper has been accepted by IEEE Internet of Things Journal. Simulation codes have been provided at: https://github.com/qiongwu86/SMDP
Shear induced normal stress differences in aqueous foams
Creators: name: Labiausse, Vincent
name: Hohler, Reinhard
name: Cohen-Addad, Sylvie
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A finite simple shear deformation of an elastic solid induces unequal normal stresses. This nonlinear phenomenon, known as the Poynting effect, is governed by a universal relation between shear strain and first normal stresses difference, valid for non-dissipative elastic materials. We provide the first experimental evidence that an analog of the Poynting effect exists in aqueous foams where besides the elastic stress, there are significant viscous or plastic stresses. These results are interpreted in the framework of a constitutive model, derived from a physical description of foam rheology.
Josephson effect and quantum merging of two Bose superfluids
Creators: name: Xiong, Hongwei
name: Liu, Shujuan
name: Zhan, Mingsheng
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We consider the Josephson effect when two independent Bose superfluids are weakly connected. In the presence of interparticle interaction and based on the calculations of the one-particle density matrix of the whole system, we find that the one-particle density matrix can be factorized which satisfies the general criterion of Bose superfluid proposed by Penrose and Onsager. By introducing an effective order parameter for the whole system, our researches show that there is Josephson effect for two independent Bose superfluids.
description: 9 pages, 4 figures. two typos in Eqs. (19) and (22) are corrected in this version
Emergence of self-sustained patterns in small-world excitable media
Creators: name: Sinha, Sitabhra
name: Saramaki, Jari
name: Kaski, Kimmo
Publisher: name: arXiv
Year: 2007
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Motivated by recent observations that long-range connections (LRC) play a role in various brain phenomena, we have observed two distinct dynamical transitions in the activity of excitable media where waves propagate both between neighboring regions and through LRC. When LRC density $p$ is low, single or multiple spiral waves are seen to emerge and cover the entire system. This state is self-sustaining and robust against perturbations. At $p=p_c^l$ the spirals are suppressed and there is a transition to a spatially homogeneous, temporally periodic state. Finally, above $p=p_c^u$, activity ceases after a brief transient.
description: 4 pages, 5 figures