cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Διερεύνηση μαθηματικών μοντέλων πρόβλεψης τροχαίων ατυχημάτων σε αστικές διασταυρώσεις στον ελληνικό χώρο
Creators: name: Γεωργίου, Γεώργιος Ν.
Publisher: name: Aristotle University of Thessaloniki
Year: 2004
Subjects: Μαθηματικά μοντέλα
Παράγοντες ατυχημάτων
Αστικές διασταυρώσεις
Road accidents
Accident factors
Log-linear modelling
Urban intersections

description: Η ανάγκη ποσοτικοποίησης του βαθμού επίδρασης των κυκλοφοριακών και γεωμετρικών χαρακτηριστικών στο επίπεδο της οδικής ασφάλειας της διασταύρωσης, αποτέλεσε το βασικό ερέθισμα για την αξιολόγηση των επιτπωσεων από αλλαγές που λαμβάνουν χώρα σε μια διασταύρωση λόγω εφαρμογής μέτρων διαχείρισης της κυκλοφορίας. Στην περίπτωση αυτή, τα καλύτερα "εργαλεία" είναι τα μαθηματικά μοντέλα πρόβλεψης μεγεθών που καθορίζουν το επίπεδο της οδικής ασφάλειας. Για πρώτη φορά ελέγχεται ως παράγοντας πρόκλησης ατυχήματος ο φόρτος των χρηστών της οδού που κινούνται παράνομα στην οδό(παραβίαση ερυθρού σηματοδότη ή σήμανσης STOP), ενώ παράλληλα μελετώνται τα ατυχήματα ανά ζεύγος εμπλεκομένων κινήσεων στη διασταύρωση, αποτυπώνοντας με μεγαλύτερη ακρίβεια την πραγματικότητα. Πραγματοποιήθηκε βιβλιογραφική έρευνα, η οποία οδήγησε στην επιλογή της βέλτιστης μεθοδολογίας και την προσαρμογή της στις ανάγκες της διατριβής. Στη συνέχεια δημιουργήθηκε η κατάλληλη βάση δεδομένων, η κατηγοριοποίηση και στατιστική επεξεργασία της οποίας έγινε με βάση τις αντίστοιχες κατηγορίες ατυχημάτων που επιλέχθηκαν. Η ολοκλήρωση της διαδικασίας αυτής, οδήγησε τελικά στη δημιουργία μαθηματικών μοντέλων πρόβλεψης για κάθε κατηγορία ατυχημάτων, τα οποία και ελέχθηκαν για την αξιοπιστία τους. Η διαδικασία έδειξε ότι τα μοντέλα στα οποία εμπεριέχονται οι συνολικά εισερχόμενοι φόρτοι στη διασταύρωση των δύο κινήσεων που εμπλέκονται στο ατύχημα αποτελούν το βασικό παράγοντα επίδρασης στη δημιουργία τροχαίων ατυχημάτων, επεηγώντας σε μεγαλύτερο βαθμό το δείγμα του πληθυσμού
description: The necessity for quantification of the impact that traffic and geometric characteristics have on the road safety level is the main objective for the assessment of the traffic management measures, which are implemented in an intersection. The most effective way to do this is to use models that predict safety indicators sush as the number of accidents, the number and the severity of casualties, etc. The traffic flows as well as the pedestrian flows, which violate red light and STOP sign while entering an intersection were examined as an accident factor. Also, each traffic comflicting movement causing an accident was examined separately, representing the traffic conditions in a greater detail. A thorough data collection models were developed through a detailed statistical analysis of the final database, while a calibration process of these prediction models had also taken place. The overall study led to reliable accident models, with the traffic flows to be the most important factors affecting accidents
The image of a teacher as a romantic rebel in narrative film
Creators: name: Gazetas, Aristides
Publisher: name: University of British Columbia
Year: 2008

description: Six narrative films were selected for this study to investigate the image of a teacher as a Romantic rebel. In each of these films, the central character is portrayed as a school teacher coming into conflict with traditional educational pedagogies that involve student learning and discipline. Each film is reviewed and evaluated within the framework of the romantic-humanist theory of education or the transformational orientation. Three major points are covered in each review. First, the thematic concerns are specified that follow the romantic, ideological constructs of Jean-Jacques Rousseau on education. Second, the directorial skills are noted in visualizing settings and characters that illustrate the conflicts between the romantically-oriented teachers and tradition-bound educational system. Third, the psychological effects of the films on viewers are described which may influence public perception of the teaching profession. Background information concerning the nature of formula-driven genre films and the development of the New Wave movement in film production is provided. A brief historical survey of changes in curriculum and instruction also is given. The study concluded that the image of the teacher as a Romantic rebel in these narrative films is a positive one. Romantic-minded teachers are portrayed as liberators who individually make a difference in the traditional educational system by showing care and trust towards students.
An Efficient Scaled spectral preconditioner for sequences of symmetric positive definite linear systems
Creators: name: Diouane, Youssef
name: Gürol, Selime
name: Mouhtal, Oussama
name: Orban, Dominique
Publisher: name: arXiv
Year: 2024
Subjects: subject: Numerical Analysis (math.NA)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 68Q25, 68R10, 68U05

description: We explore a scaled spectral preconditioner for the efficient solution of sequences of symmetric and positive-definite linear systems. We design the scaled preconditioner not only as an approximation of the inverse of the linear system but also with consideration of its use within the conjugate gradient (CG) method. We propose three different strategies for selecting a scaling parameter, which aims to position the eigenvalues of the preconditioned matrix in a way that reduces the energy norm of the error, the quantity that CG monotonically decreases at each iteration. Our focus is on accelerating convergence especially in the early iterations, which is particularly important when CG is truncated due to computational cost constraints. Numerical experiments provide in data assimilation confirm that the scaled spectral preconditioner can significantly improve early CG convergence with negligible computational cost.
Large Scale Long-tailed Product Recognition System at Alibaba
Creators: name: Zhou, Xiangzeng
name: Pan, Pan
name: Zheng, Yun
name: Xu, Yinghui
name: Jin, Rong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: A practical large scale product recognition system suffers from the phenomenon of long-tailed imbalanced training data under the E-commercial circumstance at Alibaba. Besides product images at Alibaba, plenty of image related side information (e.g. title, tags) reveal rich semantic information about images. Prior works mainly focus on addressing the long tail problem in visual perspective only, but lack of consideration of leveraging the side information. In this paper, we present a novel side information based large scale visual recognition co-training~(SICoT) system to deal with the long tail problem by leveraging the image related side information. In the proposed co-training system, we firstly introduce a bilinear word attention module aiming to construct a semantic embedding over the noisy side information. A visual feature and semantic embedding co-training scheme is then designed to transfer knowledge from classes with abundant training data (head classes) to classes with few training data (tail classes) in an end-to-end fashion. Extensive experiments on four challenging large scale datasets, whose numbers of classes range from one thousand to one million, demonstrate the scalable effectiveness of the proposed SICoT system in alleviating the long tail problem. In the visual search platform Pailitao\footnote{http://www.pailitao.com} at Alibaba, we settle a practical large scale product recognition application driven by the proposed SICoT system, and achieve a significant gain of unique visitor~(UV) conversion rate.
description: Acccepted by CIKM 2020
Γεωφυσικές διασκοπήσεις και επεξεργασία γεωφυσικού σήματος
Creators: name: Τσιβουράκη-Παπαφωτίου, Βασιλική
Publisher: name: Aristotle University of Thessaloniki
Year: 2004
Subjects: Γεωφυσικές διασκοπήσεις
Κυματιδιακός μετασχηματισμός
Πεδία δυναμικού
Αποθυροβοποίηση
Διαχωρισμός περιφερειακού-υπολειμματικού πεδίου
Ακμές εικόνας
Geophysical explorations
Wavelet transform
Potential fields
denoising
Regional-residual field separation
Edges image

description: Στόχος της διατριβής είναι η επεξεργασία του γεωφυσικού σήματος(πεδίων-δυναμικού) στην περιοχή των κυματιδίων. Ασχολείται με την αποθορυβοποίηση των δεδομένων μιας μαγνητικής διασκόπησης στην περιοχή των κυματιδίων και προτείνει ένα νέο σχήμα κυματιδιακής αποθορυβοποίησης των παραπάνω δεδομένων. Ασχολείται επίσης με τον διαχωρισμό τοπικού-περιφερειακού πεδίου και προτείνει ένα νέο αλγόριθμο διαχωρισμού στην περιοχή των κυματιδίων. Προτείνει επίσης τον προσδιορισμό των οριογραμμών μιας υπεδάφιας δομής στην περιοχή των κυματιδίων με χρήση του συνεχούς κυματιδιακού μετασχηματισμού και του προσανατολιζόμενου κυματιδίου και παράγωγος μιας Γκαουσιανής συνάρτησης. Περιλαμβάνει επίσης στο παράρτημα Α μια μελέτη της απόδοσης των κυματιδιακών φίλτρων της προς τα επάνω και προς τα κάτω συνέχειας των πεδίων δυναμικού και διαπιστώνει ότι τα εν λόγω φίλτρα δεν δίνουν μεγαλύτερη ακρίβεια από τα αντίστοιχα κλασσικά
description: in this doctoral thesis we discuss the application of the wavelet transform in potential field data processing. At first, a new algorithm is proposed for the regional residual magnetic data separation in descrete wavelet domain. Secondly an empirical study of the denoising of magnetic data is resumed and a new denoising schema in wavelet domain is proposed. Also, a wavelet edge detection method is tested for the detection of the boundaries of the causitive bodies and the use of steerable filters in edge detection of burned prismatic bodies is proposed. In the appendix A the non stationary filtering is reviewed and the implementation in wavelet domain is tested
Tunable Noise Cross-Correlations in a Double Quantum Dot
Creators: name: McClure, D. T.
name: DiCarlo, L.
name: Zhang, Y.
name: Engel, H. -A.
name: Marcus, C. M.
name: Hanson, M. P.
name: Gossard, A. C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report measurements of the cross-correlation between current noise fluctuations in two capacitively coupled quantum dots in the Coulomb blockade regime. The sign of the cross-spectral density is found to be tunable by gate voltage and source-drain bias. Good agreement is found with a model of sequential tunneling through the dots in the presence of inter-dot capacitive coupling.
description: related papers available at http://marcuslab.harvard.edu
Magnetically Arrested Disks in Quiescent Black-Hole Binaries: Formation Scenario, Observable Signatures, and Potential PeVatrons
Creators: name: Kimura, Shigeo S.
name: Sudoh, Takahiro
name: Kashiyama, Kazumi
name: Kawanaka, Norita
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We propose magnetically arrested disks (MADs) in quiescent black-hole (BH) binaries as the origin of the multiwavelength emission, and argue that this class of sources can dominate the cosmic-ray spectrum around the knee. X-ray luminosities of Galactic BH binaries in the quiescent state are far below the Eddington luminosity, and thus, radiatively inefficient accretion flows (RIAFs) are formed in the inner region. Strong thermal and turbulent pressures in RIAFs produce outflows, which can create large-scale poloidal magnetic fields. These fields are carried to the vicinity of the BH by the rapid inflow motion, forming a MAD. Inside the MAD, non-thermal protons and electrons are naturally accelerated by magnetic reconnections or stochastic acceleration by turbulence. Both thermal and non-thermal electrons emit broadband photons via synchrotron emission, which are broadly consistent with the optical and X-ray data of the quiescent BH X-ray binaries. Moreover, protons are accelerated up to PeV energies and diffusively escape from these MADs, which can account for the cosmic-ray intensity around the knee energy.
description: 16 pages, 8 figures, 1 table, accepted for publication in ApJ, minor changes
Lower bounds on the number of closed trajectories of generalized billiards
Creators: name: Duzhin, Fedor
Publisher: name: arXiv
Year: 2006
Subjects: subject: Differential Geometry (math.DG)
subject: Algebraic Topology (math.AT)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 55N91; 37D50; 58E05

description: Given a domain or, more generally, a Riemannian manifold with boundary, a billiard is the motion of a particle when the field of force is absent. Trajectories of such a motion are geodesics inside the domain; and the particle reflects from the boundary making the angle of incidence equal the angle of reflection. The billiard motion can happen to be a closed (or periodic) one when the billiard ball rebounds k times and then gets to the initial position with the same speed vector as in the beginning. The study of closed billiard trajectories is due to George Birkhoff who in 1927 proved a lower estimate for the number of closed billiard trajectories of a certain period k. We consider the most general case when the billiard ball reflects from an arbitrary submanifold of a Euclidean space. We prove Morse inequalities in this situation and apply them to find a lower estimate for the number of closed billiard trajectories of any prime period in terms of Betti numbers of the given manifold.
description: 13 pages
Supplementary document for Sensing of triglyceride concentration in blood solution using photoacoustic microscopy - 6435976.pdf
Creators: name: Wan, Nan
name: Li, Zhe
name: Seong, Myeongsu
name: Niu, Wei
name: Wu, Rong
name: Chen, Sung-Liang
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Supplement 1
Tavola Rotonda
Creators: name: Fedeli, Bortolotto, Sannazaro, De Francesco, Ghedini, Slavazzi, Cecchi, Gasparoli, AA.VV.
Publisher: name: Università degli Studi di Milano
Year: 2015

description: Fedeli, Bortolotto, Sannazaro, Ghedini, Slavazzi, Cecchi, Gasparoli
description: LANX. Rivista della Scuola di Specializzazione in Archeologia - Università degli Studi di Milano, No 19 (2014)
Evolution from BCS to BKT superfluidity in one-dimensional optical lattices
Creators: name: Iskin, M.
name: de Melo, C. A. R. S á
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We analyze the finite temperature phase diagram of fermion mixtures in one-dimensional optical lattices as a function of interaction strength. At low temperatures, the system evolves from an anisotropic three-dimensional Bardeen-Cooper-Schrieffer (BCS) superfluid to an effectively two-dimensional Berezinskii-Kosterlitz-Thouless (BKT) superfluid as the interaction strength increases. We calculate the critical temperature as a function of interaction strength, and identify the region where the dimensional crossover occurs for a specified optical lattice potential. Finally, we show that the dominant vortex excitations near the critical temperature evolve from multiplane elliptical vortex loops in the three-dimensional regime to planar vortex-antivortex pairs in the two-dimensional regime, and we propose a detection scheme for these excitations.
description: 4 pages with 2 figures
Large-Scale Visual Search with Binary Distributed Graph at Alibaba
Creators: name: Zhao, Kang
name: Pan, Pan
name: Zheng, Yun
name: Zhang, Yanhao
name: Wang, Changxu
name: Zhang, Yingya
name: Xu, Yinghui
name: Jin, Rong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Graph-based approximate nearest neighbor search has attracted more and more attentions due to its online search advantages. Numbers of methods studying the enhancement of speed and recall have been put forward. However, few of them focus on the efficiency and scale of offline graph-construction. For a deployed visual search system with several billions of online images in total, building a billion-scale offline graph in hours is essential, which is almost unachievable by most existing methods. In this paper, we propose a novel algorithm called Binary Distributed Graph to solve this problem. Specifically, we combine binary codes with graph structure to speedup online and offline procedures, and achieve comparable performance with the ones in real-value based scenarios by recalling more binary candidates. Furthermore, the graph-construction is optimized to completely distributed implementation, which significantly accelerates the offline process and gets rid of the limitation of memory and disk within a single machine. Experimental comparisons on Alibaba Commodity Data Set (more than three billion images) show that the proposed method outperforms the state-of-the-art with respect to the online/offline trade-off.
description: This paper has been accepted by CIKM2019. Proceedings of the 28th ACM International Conference on Information and Knowledge Management. 2019
Insight into liquid polymorphism from the complex phase behaviour of a simple model
Creators: name: Bartók, Albert P.
name: Hantal, György
name: Pártay, Livia B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We systematically explored the phase behavior of the hard-core two-scale ramp model suggested by Jagla[E. A. Jagla, Phys. Rev. E 63, 061501 (2001)] using a combination of the nested sampling and free energy methods. The sampling revealed that the phase diagram of the Jagla potential is significantly richer than previously anticipated, and we identified a family of new crystalline structures, which is stable over vast regions in the phase diagram. We showed that the new melting line is located at considerably higher temperature than the boundary between the low- and high-density liquid phases, which was previously suggested to lie in a thermodynamically stable region. The newly identified crystalline phases show unexpectedly complex structural features, some of which are shared with the high-pressure ice VI phase.
Modification of scattering lengths via magnetic dipole-dipole interactions
Creators: name: Mazets, I. E.
name: Kurizki, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a new mechanism for tuning an atomic s-wave scattering length. The effect is caused by virtual transitions between different Zeeman sublevels via magnetic dipole-dipole interactions. These transitions give rise to an effective potential, which, in contrast to standard magnetic interactions, has an isotropic component and thus affects s-wave collisions. Our numerical analysis shows that for chromium-50 the scattering length can be modified up to 15 %.
description: revtex, 4 pages, 3 figures
Exact one- and two-site reduced dynamics in a finite-size quantum Ising ring after a quench: A semi-analytical approach
Creators: name: Wu, Ning
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the non-equilibrium dynamics of a homogeneous quantum Ising ring after a quench, in which the transverse field $g$ suddenly changes from zero to a nonzero value. The long-timescale reduced dynamics of a single spin and of two nearest-neighbor spins, which involves the evaluation of expectation values of odd operators that break the fermion parity, is exactly obtained for finite-size but large rings through the use of a recently developed Pfaffian method [N. Wu, Phys. Rev. E 101, 042108 (2020)]. Time dependence of the transverse and longitudinal magnetizations, single-spin purity, expectation value of the string operator $X_j=\prod^{j-1}_{l=1}σ^z_lσ^x_j$, several equal-time two-site correlators, and pairwise concurrence after quenches to different phases are numerically studied. Our main findings are that (i) The expectation value of a generic odd operator approaches zero in the long-time limit; (ii) $\langle X_j\rangle_t$ exhibits $j$-independent exponential decay for a quench to $g=1$ and the time at which $\langle X_j\rangle_t$ reaches its first maximum scales linearly with $j$; (iii) The single-spin purity dynamics is mainly controlled by $\langleσ^x_j\rangle_t$ ($\langleσ^z_j\rangle_t$) for a quench to $g<1$ ($g\geq 1$). For quenches to the disordered phase with $g\gg1$, the single-spin tends to be in the maximally mixed state and the transverse and longitudinal correlators $\langleσ^z_jσ^z_{j+1}\rangle_t$ and $\langleσ^x_jσ^x_{j+1}\rangle_t$ respectively approaches $-0.25$ and $0.5$ in the thermodynamic limit; (iv) The nearest-neighbor entanglement acquires a finite plateau value that increases with increasing $g$, and approaches a saturated value $\sim0.125$ for $g\gg1$.
description: 13 pages, 10 figures
Underlying symmetries of realistic interactions and the nuclear many-body problem
Creators: name: Sviratcheva, K. D.
name: Draayer, J. P.
name: Vary, J. P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The present study brings forward important information, within the framework of spectral distribution theory, about the types of forces that dominate three realistic interactions, CD-Bonn, CDBonn+ 3terms and GXPF1, in nuclei and their ability to account for many-particle effects such as the formation of correlated nucleon pairs and enhanced quadrupole collective modes. Like-particle and proton-neutron isovector pairing correlations are described microscopically by a model interaction with Sp(4) dynamical symmetry, which is extended to include an additional quadrupole-quadrupole interaction. The analysis of the results for the 1f7/2 level shows that both CD-Bonn+3terms and GXPF1 exhibit a well-developed pairing character compared to CD-Bonn, while the latter appears to build up more (less) rotational isovector T = 1 (isoscalar T = 0) collective features. Furthermore, the three realistic interactions are in general found to correlate strongly with the pairing+quadrupole model interaction, especially for the highest possible isospin group of states where the model interaction can be used to provide a reasonable description of the corresponding energy spectra.
description: 12 pages, 4 figures
Simplified Data Wrangling with ir_datasets
Creators: name: MacAvaney, Sean
name: Yates, Andrew
name: Feldman, Sergey
name: Downey, Doug
name: Cohan, Arman
name: Goharian, Nazli
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Managing the data for Information Retrieval (IR) experiments can be challenging. Dataset documentation is scattered across the Internet and once one obtains a copy of the data, there are numerous different data formats to work with. Even basic formats can have subtle dataset-specific nuances that need to be considered for proper use. To help mitigate these challenges, we introduce a new robust and lightweight tool (ir_datasets) for acquiring, managing, and performing typical operations over datasets used in IR. We primarily focus on textual datasets used for ad-hoc search. This tool provides both a Python and command line interface to numerous IR datasets and benchmarks. To our knowledge, this is the most extensive tool of its kind. Integrations with popular IR indexing and experimentation toolkits demonstrate the tool's utility. We also provide documentation of these datasets through the ir_datasets catalog: https://ir-datasets.com/. The catalog acts as a hub for information on datasets used in IR, providing core information about what data each benchmark provides as well as links to more detailed information. We welcome community contributions and intend to continue to maintain and grow this tool.
description: SIGIR 2021 Resource
Μη ακτινικές ταλαντώσεις βραδέως περιστρεφόμενων σχετικιστικών αστέρων
Creators: name: Σταυρίδης, Αδαμάντιος Α.
Publisher: name: Aristotle University of Thessaloniki
Year: 2004
Subjects: Μη ακτινικές ταλαντώσεις
Σχετικιστικοί αστέρες
Θεωρία διαταραχών
Non radial oscillations
Relativistic stars
Perturbation theory

description: Στη διδακτορική διατριβή μελετώνται οι μη ακτινικές ταλαντώσεις βραδέως περιστρεφόμενων σχετικιστικών ασ΄τερων μέσα στα πλαίσια της θεωρίας διαταραχών ολοκληρώνονται αριθμητικά οι εξισώσεις που περιγράφουν τις ταλαντώσεις των αστέρων αυτών από την εισαγωγή μικρών διαταραχών στα μεγέθη ισορροπίας. Υπολογίζονται οι συχνότητες των ιδιοταλαντώσεων του αστρικού ρευστού αλλά και του χωροχρόνου γύρω από αυτό
description: In this thesis we study the non-radial oscillation of slowly rotating relativistic stars. Using perturbation theory we solve numerically the equations describing a slowly rotating star and the spacetime around it. We calculate and study the several stellar mode oscillations as well as the oscillations of the spacetime
Education in Aboriginal Communities: Dilemmas around Empowerment
Creators: name: Taylor, Donald M.
name: Crago, Martha B.
name: McAlpine, Lynn
Publisher: name: Canadian Journal of Native Education
Year: 2021

description: Aboriginal communities are in the process of coping with various degrees of em­powerment. Although educators tend to see empowerment as a solution to problems related to Aboriginal education, we discuss a number of fundamental dilemmas raised by empowerment. Specifically, we focus our discussion on decision making in Aboriginal communities, the goals of education, the culture of school, the language of instruction, Aboriginal content in course material, the training of Aboriginal teachers and the testing of Aboriginal students. It is our contention that dilemmas in these areas arise because empowerment has been introduced suddenly in the context of a long history of subjugation of Aboriginal peoples. Recognizing these realities will, we believe, avoid placing unrealistic expectations on the empowerment process, and convince both mainstream and Aboriginal educators that empowerment is not the end but rather the beginning of a fundamental societal challenge.
description: Canadian Journal of Native Education, Vol. 20 No. 1 (1993)
Photos and Conversation
Creators: name: Girado, Luther
name: Hammond, Jon
name: Hicks, Lucille
name: Grant, Laura
name: Turner, Julie
name: Everson, Merlene
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: xaw

description: This file contains speakers going through a photo album made by them as children at the school visited in previous recordings. After 41:55 in the recording, there is just general family conversation and gossip in English.
Dynamical behavior of a nonlocal Fokker-Planck equation for a stochastic system with tempered stable noise
Creators: name: Lin, Li
name: Duan, Jinqiao
name: Wang, Xiao
name: Zhang, Yanjie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We characterize a stochastic dynamical system with tempered stable noise, by examining its probability density evolution. This probability density function satisfies a nonlocal Fokker-Planck equation. First, we prove a superposition principle that the probability measure-valued solution to this nonlocal Fokker-Planck equation is equivalent to the martingale solution composed with the inverse stochastic flow. This result together with a Schauder estimate leads to the existence and uniqueness of strong solution for the nonlocal Fokker-Planck equation. Second, we devise a convergent finite difference method to simulate the probability density function by solving the nonlocal Fokker-Planck equation. Finally, we apply our aforementioned theoretical and numerical results to a nonlinear filtering system by simulating a nonlocal Zakai equation.
Contractor-Renormalization approach to frustrated magnets in magnetic field
Creators: name: Abendschein, A.
name: Capponi, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We propose to use the Contractor Renormalization (CORE) technique in order to derive effective models for quantum magnets in a magnetic field. CORE is a powerful non-perturbative technique that can reduce the complexity of a given microscopic model by focusing on the low-energy part. We provide a detailed analysis of frustrated spin ladders which have been widely studied in the past: in particular, we discuss how to choose the building block and emphasize the use of their reduced density matrix. With a good choice of basis, CORE is able to reproduce the existence or not of magnetization plateaux in the whole phase diagram contrary to usual perturbation theory. We also address the issue of plateau formation in two-dimensional bilayers and point out the analogy between non-frustrated strongly anisotropic models and frustrated SU(2) ones.
description: 13 pages, 20 figures; published version with minor changes
An Overview of the Compton Scattering Calculation
Creators: name: Qiao, Chen-Kai
name: Wei, Jian-Wei
name: Chen, Lin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The Compton scattering process plays significant roles in atomic and molecular physics, condensed matter physics, nuclear physics and material science. It could provide useful information on the electromagnetic interaction between light and matter. Several aspects of many-body physics, such us electronic structures, electron momentum distributions, many-body interactions of bound electrons, \emph{etc}, can be revealed by Compton scattering experiments. In this work, we give a review on \emph{ab initio} calculation of Compton scattering process. Several approaches, including the free electron approximation (FEA), impulse approximation (IA), incoherent scattering function / incoherent scattering factor (ISF) and scattering matrix (SM) are focused in this work. The main features and available ranges for these approaches are discussed. Furthermore, we also briefly introduce the databases and applications for Compton scattering.
description: 15 pages, 5 figures
Robert Boyle on the laws of nature
Creators: name: Hodding, Bruce Alan
Publisher: name: University of British Columbia
Year: 2008

description: This thesis is an extensive investigation of the use and the concept of the laws of nature in the works of Robert Boyle. Care has been taken to place Boyle's use in both the general linguistic context of his age and the context of each specific text. The thesis finds two uses of the laws of nature in Boyle's works, the prescriptive and descriptive, and traces these to two different historical origins. It also traces Boyle's concept of the laws of nature to two different medieval doctrines, voluntarism and concurrentism. This thesis both challenges the received view of the origins of the laws of nature in the seventeenth century and argues that there is more continuity between the discourse of the late middle ages and the early modern period than is sometimes thought. That is, in developing his concept of the laws of nature, Boyle translates the scholastic discourse of voluntarism and concurrentism into the mechanical philosophy.
Multi-wavelength and Multi-messenger Counterparts of Fast Radio Bursts
Creators: name: Zhang, Bing
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Fast radio bursts are brief, highly dispersed bursts detected in the radio band, originating from cosmological distances. The only such event detected in the Milky Way galaxy, FRB 20200428DD, was associated with an X-ray burst emitted by a magnetar named SGR J1935+2154, revealing the first case of a multi-wavelength counterpart of an FRB. Counterparts in other wavelengths accompanying or following FRBs, as well as the bright emission associated with the progenitor of the FRB engine, have been proposed in various FRB models, but no robust detection has been made so far. In general, FRBs as we know them are not favorite multi-messenger emitters. Nonetheless, possible neutrino and gravitational wave emission signals associated with FRBs or FRB-like events have been discussed in the literature. Here I review these suggested multi-wavelength and multi-messenger counterparts of FRBs or FRB-like events and the observational progress in searching for these signals. The topics include multi-wavelength (X-rays, $γ$-rays, optical) emission and neutrino emission from FRBs within the framework of the magnetar source models and possible FRB-like events associated with gravitational waves.
description: Invited review published in Annual Review of Nuclear and Particle Science, the author's version
Resummation of Large Endpoint Corrections to Color-Octet J/psi Photoproduction
Creators: name: Fleming, Sean
name: Leibovich, Adam K.
name: Mehen, Thomas
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: An unresolved problem in J/psi phenomenology is a systematic understanding of the differential photoproduction cross section, dsigma/dz [gamma + p -> J/psi + X], where z= E_psi/E_gamma in the proton rest frame. In the non-relativistic QCD (NRQCD) factorization formalism, fixed-order perturbative calculations of color-octet mechanisms suffer from large perturbative and nonperturbative corrections that grow rapidly in the endpoint region, z -> 1. In this paper, NRQCD and soft collinear effective theory are combined to resum these large corrections to the color-octet photoproduction cross section. We derive a factorization theorem for the endpoint differential cross section involving the parton distribution function and the color-octet J/psi shape functions. A one loop matching calculation explicitly confirms our factorization theorem at next-to-leading order. Large perturbative corrections are resummed using the renormalization group. The calculation of the color-octet contribution to dsigma/dz is in qualitative agreement with data. Quantitative tests of the universality of color-octet matrix elements require improved knowledge of shape functions entering these calculations as well as resummation of the color-singlet contribution which accounts for much of the total cross section and also peaks near the endpoint.
description: 30 pages, 6 figures
Global analysis of fragmentation functions for pions and kaons and their uncertainties
Creators: name: de Florian, D.
name: Sassot, R.
name: Stratmann, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present new sets of pion and kaon fragmentation functions obtained in NLO combined analyses of single-inclusive hadron production in electron-positron annihilation, proton-proton collisions, and deep-inelastic lepton-proton scattering with either pions or kaons identified in the final state. At variance with all previous fits, the present analyses take into account data where hadrons of different electrical charge are identified, which allow to discriminate quark from anti-quark fragmentation functions without the need of non trivial flavor symmetry assumptions. The resulting sets are in good agreement with all data analyzed, which cover a much wider kinematical range than in previous fits. An extensive use of the Lagrange multiplier technique is made in order to assess the uncertainties in the extraction of the fragmentation functions and the synergy from the complementary data sets in our global analysis.
description: 28 pages, 25 figures
Dark photon production via $γγ\rightarrow γA'$
Creators: name: Wong, Xiaorui
name: Huang, Yongsheng
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The dark photon is a new gauge boson which arises from an extra U'(1) gauge symmetry. In this paper, a novel dark photon production mechanism based on MeV-scale $γ$-$γ$ collider is considered: $γγ\rightarrow γA'$. With the aid of PACKAGE-X, differential cross section of $γγ\rightarrow γA'$ is obtained, as a function of the kinetic mixing parameter $\varepsilon$ and dark photon mass $m_{A'}$. Taking the light-by-light scattering as background, the constraints on the dark photon parameter space for different time intervals in a MeV-scale $γ$-$γ$ collider are also given.
Considerations for Aboriginal Adult Education Program Planning
Creators: name: Martin, Peter
Publisher: name: Canadian Journal of Native Education
Year: 2021

description: Advice is given here in the area of adult education program planning, based on the central tenet that Aboriginal values, cultural processes, and cultural perspec­tives are fundamental to program planning. Non-Aboriginal program planners must accommodate their processes of planning to create biculturally oriented pro­ grams.
description: Canadian Journal of Native Education, Vol. 20 No. 1 (1993)
Η βιωματική προσέγγιση στο μάθημα των θρησκευτικών του δημοτικού σχολείου: εμπειρική έρευνα
Creators: name: Κόπτσης, Αλέξανδρος Α.
Publisher: name: Aristotle University of Thessaloniki
Year: 2004

description: Η διαπίστωση της υποβάθμισης του μαθήματος των θρησκευτικών και στο δημοτικό σχολείο μας οδήγησε στην εφαρμογή μιας νέας μεθοδολογίας που θα συνέβαλε στην αναβάθμιση του μαθήματος και θα το έκανε ενδιαφέρον και ελκυστικό. Χρησιμοποιήσαμε τη βιωματική προσέγγιση την οποία αναλύσαμε και εξετάσαμε τις δυνατότητες εφαρμογής της. Η έρευνα πραγματοποιήθηκε σε 3 τμήματα(2 εφαρμογής και 1 αναφοράς) και καταγράφηκαν οι συμπεριφορές των μαθητών(με επιστημονική παρατήρηση-η επίδοσή τους με ερωτηματολόγια και η άποψη των γονέων με συνέντευξη). Από την έρευνα διαπιστώθηκε ότι οι μαθητές που διδάχθηκαν με τη νέα μεθοδολογία ανέπτυξαν θετικότερες συμπεριφορές και καλύτερη επίδοση. Οι γονείς δέχθηκαν τη νέα μεθοδολογία με ιδιαίτερα θετικό τρόπο
description: The ascertainment of devalorisation of course of religions in the elementer school led us to the application of new methodology that would contribute in the improving of course and would make interesting and attractive. We used the viomatiki approach in which we analyzed and examined her possibilities of application. The research was realised in 3 departments of(2 application and 1 report) and was recorded the behaviors of students with scientific observation(questionnaires) and the opinion of parents with interviews. By the research it was realised that the students that were taught with the new methodology developed more positive behaviors. The parents accepted the new methodology with particularly positive way
Capturing complex hand movements and object interactions using machine learning-powered stretchable smart textile gloves
Creators: name: Tashakori, Arvin
name: Jiang, Zenan
name: Servati, Amir
name: Soltanian, Saeid
name: Narayana, Harishkumar
name: Le, Katherine
name: Nakayama, Caroline
name: Yang, Chieh-ling
name: Wang, Z. Jane
name: Eng, Janice J.
name: Servati, Peyman
Publisher: name: arXiv
Year: 2024
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Robotics (cs.RO)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Accurate real-time tracking of dexterous hand movements and interactions has numerous applications in human-computer interaction, metaverse, robotics, and tele-health. Capturing realistic hand movements is challenging because of the large number of articulations and degrees of freedom. Here, we report accurate and dynamic tracking of articulated hand and finger movements using stretchable, washable smart gloves with embedded helical sensor yarns and inertial measurement units. The sensor yarns have a high dynamic range, responding to low 0.005 % to high 155 % strains, and show stability during extensive use and washing cycles. We use multi-stage machine learning to report average joint angle estimation root mean square errors of 1.21 and 1.45 degrees for intra- and inter-subjects cross-validation, respectively, matching accuracy of costly motion capture cameras without occlusion or field of view limitations. We report a data augmentation technique that enhances robustness to noise and variations of sensors. We demonstrate accurate tracking of dexterous hand movements during object interactions, opening new avenues of applications including accurate typing on a mock paper keyboard, recognition of complex dynamic and static gestures adapted from American Sign Language and object identification.
The Ly$α$ forest flux correlation function: a perturbation theory perspective
Creators: name: Chen, Shi-Fan
name: Vlah, Zvonimir
name: White, Martin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The Ly$α$ forest provides one of the best means of mapping large-scale structure at high redshift, including our tightest constraint on the distance-redshift relation before cosmic noon. We describe how the large-scale correlations in the Ly$α$ forest can be understood as an expansion in cumulants of the optical depth field, which itself can be related to the density field by a bias expansion. This provides a direct connection between the observable and the statistics of the matter fluctuations which can be computed in a systematic manner. We discuss the way in which complex, small-scale physics enters the predictions, the origin of the much-discussed velocity bias and the `renormalization' of the large-scale bias coefficients. Our calculations are within the context of perturbation theory, but we also make contact with earlier work using the peak-background split. Using the structure of the equations of motion we demonstrate, to all orders in perturbation theory, that the large-scale flux power spectrum becomes the linear spectrum times the square of a quadratic in the cosine of the angle to the line of sight. Unlike the case of galaxies, both the isotropic and anisotropic pieces receive contributions from small-scale physics.
description: 28 pages, 4 figures, updated to match version accepted by JCAP
Target Mass Effects in Polarized Deep Inelastic Scattering
Creators: name: Sidorov, Aleksander V.
name: Stamenov, Dimiter B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The target mass effects in polarized DIS have been studied. It was demonstrated that taking into account the first order target mass corrections to g1 a very good approximation of the exact formula is achieved. It was also shown that their magnitude in the preasymptotic DIS region is small except for x > 0.65, where their large effect is partially suppressed by the large values of $Q^2$ due to the cut $W^2 > 4 GeV^2$. The difference between the size of the target mass and higher twist corrections is illustrated.
description: 8 pages, LaTeX, 5 figures, typo in Eq. 3 corrected, comment added, to appear in Mod. Phys. Lett. A
Hot graphite dust in the inner regime of NGC 4151
Creators: name: Swain, Subhashree
name: Shalima, P.
name: Latha, K. V. P.
name: Swamy, Krishna B. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We model the near infrared SED of NGC 4151 with a 3-D radiative transfer SKIRT code, using which torus only (TO) and Ring And Torus (RAT) scenarios are studied. In the RAT models, a graphite ring-like structure (clumpy or smooth), is incorporated between the torus and the accretion disk. We vary the inclination angle $(i)$, inner radius (of the torus and the ring, $R_{\rm in, t}$ and $R_{\rm in, r}$ respectively), torus half-opening angle ($σ$), optical depth ($τ_{9.7, \rm t} $ of the torus and $τ_{9.7, \rm r} $ of the ring ) and the dust clump size ($R_{\rm clump}$). We perform a statistical analysis of the parameter space and find that all the models are able to explain the flat NIR SED of NGC 4151 with minor differences in the derived parameters. For the TO model, we get, $R_{\rm in, t}=0.1$ pc, $σ= 30^\circ $, $i = 53^\circ $, $τ_{9.7, \rm t}=10$ and the clumpsize, $R_{\rm clump}$ =0.4 pc. For the smooth RAT model, $R_{\rm in, \rm r}=0.04$ pc, $τ_{9.7, \rm total}$ = 11 and for the clumpy RAT model, $R_{\rm in, r} = 0.04$ pc/0.06 pc and $τ_{9.7, \rm total}=20$. The $R_{\rm in, t}$ from the TO model does not agree with the NIR observations ($\sim 0.04$ pc). Hence, the most likely scenario is that a hot graphite ring is located at a distance 0.04 pc from the centre, composed of a smooth distribution of dust followed by a dusty torus at 0.1 pc with ISM type of grains.
description: 21 pages, 24 figures, accepted for publication in MNRAS
Inactivation of Escherichia coli population on fruit surfaces using ultraviolet-C light: Influence of fruit surface characteristics
Creators: name: Syamaladevi, Roopesh M.; Lu, Xiaonan; Sablani, Shyam S.; Insan, Sunil Kumar; Adhikari, Achyut; Killinger, Karen; Rasco, Barbara; Dhinga, Amit; Bandyopadhyay, Amit; Annapure, Uday
Publisher: name: University of Alberta Libraries
Year: 2013

Abstract
Large deviations at various levels for run-and-tumble processes with space-dependent velocities and space-dependent switching rates
Creators: name: Monthus, Cecile
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: One-dimensional run-and-tumble processes may converge towards some localized non-equilibrium steady state when the two velocities and/or the two switching rates are space-dependent. A long dynamical trajectory can be then analyzed via the large deviations at Level 2.5 for the joint probability of the empirical densities, of the empirical spatial currents and of the empirical switching flows. The Level 2 for the empirical densities alone can be then derived via the optimization of the Level 2.5 over the empirical flows. More generally, the large deviations of any time-additive observable can be also obtained via contraction from the Level 2.5, or equivalently via the deformed generator method and the corresponding Doob conditioned process. Finally, the large deviations for the empirical intervals between consecutive switching events can be obtained via the introduction of the alternate Markov chain that governs the series of all the switching events of a long trajectory.
description: v2=revised version (25 pages) : some simplifications and extensive reorganization into a shorter text and seven appendices