cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On Evaluating Ethnographic Representations: The Case of the Okanagan of South Central British Columbia
Creators: name: Wickwire, Wendy C.
Publisher: name: Canadian Journal of Native Education
Year: 2021

description: A number of ethnographers over the past century have written about the traditional social or­ganization of the Okanagan of south central British Columbia. This article compares the ac­ counts of four of these, one by James A. Teit, one by L.V.W. Walters, one by Verne Ray, and another by Peter Carstens. While the first three share much in common, the one by Carstens is strikingly different. The former, for example, depict a communitarian social structure with an emphasis on equality for everyone. Peter Carstens, on the other hand, de­ scribes it as a stratified society (comprised of chiefs, headmen, commoners, and slaves) with a strong emphasis on rank and prestige. The objective of the article is to show how ethnog­raphy is affected by personal bias and ideology, particularly when attempting to understand otherness. At a time in history when white representations are called into question by Na­tive peoples themselves, and when they are being used against living peoples injudicial and other highly charged settings, this examination allows us to appreciate the strengths and the limits, the volatility of the ethnographic process itself.
description: Canadian Journal of Native Education, Vol. 18 No. 2 (1991)
The Impacts of Modeling Choices on the Inference of the Circumgalactic Medium Properties from Sunyaev-Zeldovich Observations
Creators: name: Moser, Emily
name: Amodeo, Stefania
name: Battaglia, Nicholas
name: Alvarez, Marcelo A.
name: Ferraro, Simone
name: Schaan, Emmanuel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: As the signal-to-noise of Sunyaev-Zeldovich (SZ) cross-correlation measurements of galaxies improves our ability to infer properties about the circumgalactic medium (CGM), we will transition from being limited by statistical uncertainties to systematic uncertainties. Using thermodynamic profiles of the CGM created from the IllustrisTNG (The Next Generation) simulations we investigate the importance of specific choices in modeling the galaxy sample. These choices include different sample selections in the simulation (stellar versus halo mass, color selections) and different fitting models (matching by the shape of the mass distribution, inclusion of a two-halo term). We forward model a mock galaxy sample into projected SZ observable profiles and fit these profiles to a generalized Navarro-Frenk-White profile using forecasted errors of the upcoming Simons Observatory experiment. We test the number of free parameters in the fits and show that this is another modeling choice that yields different results. Finally, we show how different fitting models can reproduce parameters of a fiducial profile, and show that the addition of a two-halo term and matching by the mass distribution of the sample are extremely important modeling choices to consider.
description: 23 pages, 9 figures, published in the Astrophysical Journal
Quantum jumps in the non-Hermitian dynamics of a superconducting qubit
Creators: name: Chen, Weijian
name: Abbasi, Maryam
name: Joglekar, Yogesh N.
name: Murch, Kater W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the dynamics of a driven non-Hermitian superconducting qubit which is perturbed by quantum jumps between energy levels, a purely quantum effect with no classical correspondence. The quantum jumps mix the qubit states leading to decoherence. We observe that this decoherence rate is enhanced near the exceptional point, owing to the cube-root topology of the non-Hermitian eigenenergies. Together with the effect of non-Hermitian gain/loss, quantum jumps can also lead to a breakdown of adiabatic evolution under the slow-driving limit. Our study shows the critical role of quantum jumps in generalizing the applications of classical non-Hermitian systems to open quantum systems for sensing and control.
description: 12 pages, 10 figures
Gapless quantum spin liquid, stripe and antiferromagnetic phases in frustrated Hubbard models in two dimensions
Creators: name: Mizusaki, Takahiro
name: Imada, Masatoshi
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Unique features of non-magnetic insulator phase are shown, and phase diagram for t-t' Hubbard model on square lattice is presented. Using the path-integral renormalization group method, we find antiferromagnetic phase for small next-nearest neighbor transfer t' and stripe (or collinear) phase for large t' in the Mott insulating region of strong on site interaction U. For intermediate t'/t~ 0.7 at large U/t>7, we find longer-period antiferromagnetic insulator phase with 2*4 structure. In the Mott insulating region, we also find quantum spin liquid (in other words, non-magnetic insulator) phase near the Mott transition to paramagnetic metals. Correlated electrons often crystallize to the Mott insulator usually with some magnetic orders, whereas the "quantum spin liquid" has been a long-sought issue. We report numerical evidences that a nonmagnetic insulating (NMI) phase gets stabilized near the Mott transition with remarkable properties: The 2D Mott insulators on geometrically frustrated lattices contain a phase with gapless spin excitations and degeneracy of the ground state in the whole Brillouin zone of the total momentum. It has an interpretation for an unexplored type of a quantum liquid. The present concept is useful in analyzing a variety of experimental results in frustrated magnets including organic BEDT-TTF compounds and 3He atoms adsorbed on graphite.
description: Manuscript was updated
Synthesis, characterization and reactivity of Group 6 alkoxo nitrosyl complexes
Creators: name: Lundmark, Penelope J.
Publisher: name: University of British Columbia
Year: 2008

description: Three new classes of alkoxo nitrosyl complexes of the type Cp*M(NO)(OR)X (Cp* =C5Me5; M = Mo, W; R = alkyl, aryl; X = CI, OR, alkyl), all of which have been fully characterized, are prepared by metathesis reactions. The molecular structures ofCp*W(NO)(OCMe3)2 and Cp*W(NO)(OCH2Ph)2 have been established by X-ray crystallographic analyses. While in general the above metathesis reactions are straightforward, two interesting bimetallic complexes, [Cp*W(N0)(CH2SiMe3)][Cp*W(C1)(0)]-(112-il:T12-NC(H)SiMe3) and [Cp*W(N0)(CH2SiMe3)C1][Cp*W(C1)(i2-N{0){H)CH2SiMe3)]-(1.t-N), are produced in attempts to prepare alkoxo alkyl complexes using potassium salts. X-ray crystallographic analyses of both products are presented. The reaction chemistry of the three classes of alkoxo complexes, Cp*M(NO)(OR)X, with a variety of reagents such as oxygen, water, phosphines, carbon monoxide, dihydrogen, HCI, isonitriles and isocyanates has been investigated. In general, the 18-electron bis(alkoxo)complexes are chemically inert to most of these reagents; the only exceptions being the reactions of Cp*M(NO)(OR)2 with H2 and HC1. The inertness of the bis(alkoxo) complexes is attributed to donation of electron density from filled p-type orbitals on the oxygen atoms into empty metal orbitals on the metal center. The reactivity studies of the chloro compounds are limited because of their extreme air- and moisture-sensitivity. In contrast, the alkoxo alkyl complexes decompose cleanly to isolable organometallic species when treated with 02 or H2O. In Lewis acid-base type reactions with PMe3, CNCMe3, PhNCO and p-tolylNCO, the Cp*M(N0)(R)(OR') species have sufficiently electron-deficient metal centers to form 1:1 adducts and/or insertion products. The diamagnetic bimetallic complex, [Cp*Mo(N0)(CH2Ph)(11-0)]2, is produced when Cp*Mo(NO)(CH2Ph)(OCMe3) is treated with H2 in THF. Earlier work into the reactions of dialkyl complexes, Cp'W(NO)R2 (Cp' = r15-05H5, is-C5Me5), with carbon monoxide has been extended to permit some general conclusions regarding CO-insertion reactions in these systems. These studies show that the products obtained from the carbonylation of various Cp'W(NO)R2 complexes are very dependent upon the nature of the ancillary ligands. The nature of the cyclopentadienyl ligand determines the extent of the reactivity, with only the Cp complexes inserting a second equivalent of CO. The nature of the hydrocarbyl group influences the rate of the reaction such that the greater Lewis acidity of the diaryl complexes results in their forming monoacyl products faster than do the related dialkyl complexes. However, only the monoacyl alkyl complexes possess a sufficiently weak M-C bond to undergo a second insertion of CO to form bis(acyl) species, Cp'W(NO)(C{O}R)2. The nature of the hydrocarbyl ligand also plays an influential role in the case when R = CH2Ar in that putative reductive elimination of ketone occurs from the undetectable monoacyl intermediate complexes.
Scalar functions for wave extraction in numerical relativity
Creators: name: Nerozzi, Andrea
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Wave extraction plays a fundamental role in the binary black hole simulations currently performed in numerical relativity. Having a well defined procedure for wave extraction, which matches simplicity with efficiency, is critical especially when comparing waveforms from different simulations. Recently, progress has been made in defining a general technique which uses Weyl scalars to extract the gravitational wave signal, through the introduction of the {\it quasi-Kinnersley tetrad}. This procedure has been used successfully in current numerical simulations; however, it involves complicated calculations. The work in this paper simplifies the procedure by showing that the choice of the {\it quasi-Kinnersley tetrad} is reduced to the choice of the time-like vector used to create it. The space-like vectors needed to complete the tetrad are then easily identified, and it is possible to write the expression for the Weyl scalars in the right tetrad, as simple functions of the electric and magnetic parts of the Weyl tensor.
description: 5 pages
Resonant dephasing in the electronic Mach-Zehnder interferometer
Creators: name: Sukhorukov, Eugene V.
name: Cheianov, Vadim V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We address the recently-observed unexpected behavior of Aharonov-Bohm oscillations in the electronic Mach-Zehnder interferometer that was realized experimentally in a quantum Hall system [1]. We argue that the measured lobe structure in the visibility of oscillations and the phase rigidity result from a strong long-range interaction between two adjacent counter-propagating edge states, which leads to a resonant scattering of plasmons. The visibility and phase shift, which we expressed in terms of the transmission coefficient for plasmons, can be used for the tomography of edge states.
description: 4 pages, 3 figures; published version
Learning to Find Usages of Library Functions in Optimized Binaries
Creators: name: Ahmed, Toufique
name: Devanbu, Premkumar
name: Sawant, Anand Ashok
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Much software, whether beneficent or malevolent, is distributed only as binaries, sans source code. Absent source code, understanding binaries' behavior can be quite challenging, especially when compiled under higher levels of compiler optimization. These optimizations can transform comprehensible, "natural" source constructions into something entirely unrecognizable. Reverse engineering binaries, especially those suspected of being malevolent or guilty of intellectual property theft, are important and time-consuming tasks. There is a great deal of interest in tools to "decompile" binaries back into more natural source code to aid reverse engineering. Decompilation involves several desirable steps, including recreating source-language constructions, variable names, and perhaps even comments. One central step in creating binaries is optimizing function calls, using steps such as inlining. Recovering these (possibly inlined) function calls from optimized binaries is an essential task that most state-of-the-art decompiler tools try to do but do not perform very well. In this paper, we evaluate a supervised learning approach to the problem of recovering optimized function calls. We leverage open-source software and develop an automated labeling scheme to generate a reasonably large dataset of binaries labeled with actual function usages. We augment this large but limited labeled dataset with a pre-training step, which learns the decompiled code statistics from a much larger unlabeled dataset. Thus augmented, our learned labeling model can be combined with an existing decompilation tool, Ghidra, to achieve substantially improved performance in function call recovery, especially at higher levels of optimization.
Semantic and grammatical elicitation: Bare nouns and Weak Crossover
Creators: name: Kipkoech, Linus
name: Bossi, Madeline
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: sgc

description: One .mp4 file and one .pdf file. Elicitation of scopal possibilities of bare nouns. Elicitation of Weak Crossover contexts.
Comparative analysis of SEO factors across and within distinct industries – ecommerce, hospitality, telecommunications
Creators: name: Cirovic, Strahinja Slavomir
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Βελτιστοποίηση Μηχανών Αναζήτησης
Λέξεις-κλειδιά
Καλές Πρακτικές SEO
Search Engine Optimization
Keywords
White Hat SEO

description: This paper explores the effect of different search engine optimization (SEO) factors across three distinct industries - ecommerce, hospitality, telecommunications. It aims to do so by presenting correlations between the value of the factors and a webpage’s rank by obtaining and quantifying the data through specialized tools. In addition to examining the webpage’s ranking for specific keywords the paper also deals with the factors that contribute to search engine rankings and examines the best known practices for using search engine optimization. All of the methods mentioned are mainly directed at Google, as it is the most widely used search engine. Organic (non-paid) search options will be the focal point of the essay. The topic is approached from a nontechnical background, and expects from the reader only the fundamental knowledge of navigating the World Wide Web. The main aim of the essay is to give the reader an insight into how search engines approach webpages of different nature, but also serve as a starting point for further self-study and/or practice in the field of SEO
description: Η παρούσα εργασία εξετάζει την επίδραση διαφορετικών παραγόντων βελτιστοποίησης μηχανών αναζήτησης (SEO) σε τρεις διακριτές βιομηχανίες – ηλεκτρονικό εμπόριο, φιλοξενία, τηλεπικοινωνίες. Επιδιώκει να το πράξει παρουσιάζοντας συσχετισμούς μεταξύ της αξίας των παραγόντων και την κατάταξη της ιστοσελίδας ποσοτικοποιώντας τα δεδομένα μέσω εξειδικευμένων εργαλείων. Επιπρόσθετα από την εξέταση της κατάταξης της ιστοσελίδας για συγκεκριμένες λέξεις-κλειδιά, η εργασία πραγματεύεται τους παράγοντες που συμβάλλουν στην ταξινόμηση των μηχανών αναζήτησης και εξετάζει γνωστές πρακτικές για τη χρήση της βελτιστοποίησης μηχανών αναζήτησης. Όλες οι μέθοδοι που αναφέρονται απευθύνονται κυρίως στην Google, καθώς είναι η πιο διαδεδομένη μηχανή αναζήτησης. Οι οργανικές (μη πληρωμένες) επιλογές αναζήτησης θα είναι το επίκεντρο αυτού του δοκιμίου. Το θέμα προσεγγίζεται από μη τεχνικό υπόβαθρο και αναμένει από τον αναγνώστη μόνο την βασική γνώση της πλοήγησης στον παγκόσμιο ιστό. Ο κεντρικός στόχος του δοκιμίου είναι να δώσει στον αναγνώστη μια επίγνωση του πως οι μηχανές αναζήτησης προσεγγίζουν ιστοσελίδες διαφορετικής φύσης, ενώ επίσης χρησιμεύει ως ένα σημείο εκκίνησης για περεταίρω αυτοδιδασκαλία ή/και πρακτική στον τομέα της βελτιστοποίησης μηχανών αναζήτησης (SEO).
Spectral Distortions at Super-Kamiokande
Creators: name: Dev, S.
name: Kumar, Sanjeev
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We examine the effect of the rise in the survival probability of the electron neutrinos with the decrease in the neutrino energy on the recoil electron spectrum at Super-Kamiokande.
description: 9 pages, 8 eps figures, to be published in Physical Review D as a Brief Report
title: The Impact of Parent and Peer Socialization on Juvenile Delinquency
Creators: name: Pender, Ebony I.
Publisher: name: Old Dominion University Libraries
Year: 2021

description: Juveniles often make decisions based on socialization and behaviors that are taught at a young age. Socialization experiences which can either protect or lead to adverse outcomes such as juvenile delinquency. It is extremely important to examine the role of socialization in delinquency due to the large number of youths currently involved in criminal acts. There are many violent and nonviolent crimes that are committed by youth under the ages of 18. For example, in 2018, there were 728,280 arrests of youths under the age of 18. A significant number of those, 46,410, were for violent index crimes with 141,500 for property index crimes (Puzzanchera, 2020). Though arrest rates for many violent crimes and property crimes were at new lows in 2018 (Puzzanchera, 2020), there is still reason for concern. This research examines the influence of both parental supervision and peer impact, on juvenile delinquency. This research explores the effects of socialization by parents and peers on juvenile delinquents using data from part 1 of the Evaluation of the Gang Resistance Education and Training (GREAT) Program in the United States. Multiple regression as well as a logit regression was used in this study. Key findings are that both parental supervision and peer impact have significant effects on juvenile delinquency individually and together.
Ionized Gas Outflows in Low Excitation Radio Galaxies Are Radiation Driven
Creators: name: Singha, Mainak
name: O'Dea, Christopher P.
name: Gordon, Yjan A.
name: Lawlor-Forsyth, Cameron
name: Baum, Stefi A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Low excitation radio galaxies (LERGs) are weakly accreting active galactic nuclei (AGN) believed to be fuelled by radiatively inefficient accretion processes. Despite this, recent works have shown evidence for ionized and neutral hydrogen gas outflows in these galaxies. To investigate the potential drivers of such outflows we select a sample of 802 LERGs using the Best & Heckman (2012) catalogue of radio galaxies. By modelling the [O III] $λ5007$ profile in Sloan Digital Sky Survey spectra of a sample of 802 LERGs, we determine that the ionized outflows are present in $\sim 1.5\%$ of the population. Using $1.4~\text{GHz}$ imaging from the Faint Images of the Radio Sky at Twenty Centimeters survey we analyze the radio morphology of LERGs with outflows and find these to be consistent with the parent LERG population. However, we note that unlike the majority of the LERG population, those LERGs showing outflows have Eddington scaled accretion rates close to $1\%$. This is indicative that ionized outflows in LERGs are driven by the radiation pressure from the accretion disk of the AGN rather than the radio jets. We report specific star formation rates in the range of $10^{-12} < \text{sSFR} < 10^{-9}~\text{yr}^{-1}$. Moreover, we observe higher mass outflow rates of $7-150~M_{\odot}~\text{yr}^{-1}$ for these LERGs than luminous quasars for a given bolometric luminosity, which could possibly be due to the radio source in LERGs boosting the mass-loading. This scenario could indicate that these outflows could potentially drive feedback in LERGs.
description: 22 pages, 9 figures. Resubmitted to ApJ
Higher Education in the Fourth World: Indigenous People Take Control
Creators: name: Barnhardt, Ray
Publisher: name: Canadian Journal of Native Education
Year: 2021

description: It is self-evident to anyone capable of seeing beyond the confines of the little spheres within which we spin out our lives, that the day is rapidly approaching when it will no longer be viable for the minority of the world’s population who don’t live in villages to make every major decision affecting the lives of the majority who do. So any program of village education which intends to be forerunner of a revised world order must, as its first priority, design a delivery system premised on local decision-making. (Vaudrin, 1975)
description: Canadian Journal of Native Education, Vol. 18 No. 2 (1991)
Tuning of dipolar interactions and evaporative cooling in a three-dimensional molecular quantum gas
Creators: name: Li, Jun-Ru
name: Tobias, William G.
name: Matsuda, Kyle
name: Miller, Calder
name: Valtolina, Giacomo
name: De Marco, Luigi
name: Wang, Reuben R. W.
name: Lassablière, Lucas
name: Quéméner, Goulven
name: Bohn, John L.
name: Ye, Jun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Ultracold polar molecules possess long-range, anisotropic, and tunable dipolar interactions, providing the opportunities to probe quantum phenomena inaccessible with existing cold gas platforms. However, experimental progress has been hindered by the dominance of two-body loss over elastic interactions, which prevents efficient evaporative cooling. Though recent work has demonstrated controlled interactions by confining molecules to a two-dimensional geometry, a general approach for tuning molecular interactions in a three-dimensional (3D), stable system has been lacking. Here, we demonstrate tunable elastic dipolar interactions in a bulk gas of ultracold 40K87Rb molecules in 3D, facilitated by an electric field-induced shielding resonance which suppresses the reactive loss by a factor of thirty. This improvement in the ratio of elastic to inelastic collisions enables direct thermalization. The thermalization rate depends on the angle between the collisional axis and the dipole orientation controlled by an external electric field, a direct manifestation of the anisotropic dipolar interaction. We achieve evaporative cooling mediated by the dipolar interactions in three dimensions. This work demonstrates full control of a long-lived bulk quantum gas system with tunable long-range interactions, paving the way for the study of collective quantum many-body physics.
description: Main text 27 pages (4+1 figures) + 8 pages Supplementary Information
Vehicle Routing Problem in XYZ company
Creators: name: Κολυβάκης, Σταύρος Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Το πρόβλημα της δρομολόγησης στόλου οχημάτων
Αλγόριθμος Clark and Wright
Παράλληλη έκδοση
Vehicle Routing Problem
Clark and Wright algorithm
Parallel version

description: In this thesis we examine the application of Vehicle Routing Problem, in a logistics company. The data of the problem were entered in matrixes in excel and were processed with the help of Visual Basic for Applications (VBA). The algorithm which was executed with the help of VBA code was the Clark and Wright algorithm, both parallel and sequential version. The results of this algorithm were the optimal routes which can be used by the company in order to decrease its distribution expenses. The program, which was written in VBA and was executed in excel, uses permanent data like the location of the company’s customers , which of course were altered in this thesis, and changing data like the customer’s daily demand.
description: Σε αυτή την διπλωματική, έγινε μελέτη γύρω από την εφαρμογή του Προβλήματος της Δρομολόγησης Εμπορικού Στόλου σε μια εταιρία χονδρικής πώλησης. Το αρχικά δεδομένα του προβλήματος καταχωρήθηκαν σε πίνακες και φύλλα εργασίας του excel και στην συνέχεια η επεξεργασία των δεδομένων αυτών έγινε με την χρήση μιας εφαρμογής που συντάχθηκε με χρήση της γλώσσας προγραμματισμού Visual Basic for Applications (VBA). Ο αλγόριθμος που εκτελέστηκε με χρήση της προαναφερθείσας γλώσσας προγραμματισμού ήταν ο αλγόριθμος Clark and Wright, και η παράλληλη έκδοση του αλγορίθμου καθώς και η διαδοχική έκδοση του αλγορίθμου. Μετά από την επεξεργασία των δεδομένων προέκυψαν τα βέλτιστα δρομολόγια, τα οποία αν χρησιμοποιηθούν από την εταιρία θα μειωθούν τα έξοδα της διανομής. Η εφαρμογή η οποία γράφτηκε σε VBA και εκτελέστηκε σε excel, χρησιμοποιεί σταθερά δεδομένα όπως η τοποθεσία των πελατών της εταιρίας, τα οποία μεταβλήθηκαν για λόγους προσωπικών δεδομένων, και μεταβαλλόμενα δεδομένα όπως η καθημερινή ζήτηση των πελατών.
Endogenous post-stratification in surveys: classifying with a sample-fitted model
Creators: name: Breidt, F. Jay
name: Opsomer, Jean D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62D05 (Primary) 62F12 (Secondary)

description: Post-stratification is frequently used to improve the precision of survey estimators when categorical auxiliary information is available from sources outside the survey. In natural resource surveys, such information is often obtained from remote sensing data, classified into categories and displayed as pixel-based maps. These maps may be constructed based on classification models fitted to the sample data. Post-stratification of the sample data based on categories derived from the sample data (``endogenous post-stratification'') violates the standard post-stratification assumptions that observations are classified without error into post-strata, and post-stratum population counts are known. Properties of the endogenous post-stratification estimator are derived for the case of a sample-fitted generalized linear model, from which the post-strata are constructed by dividing the range of the model predictions into predetermined intervals. Design consistency of the endogenous post-stratification estimator is established under mild conditions. Under a superpopulation model, consistency and asymptotic normality of the endogenous post-stratification estimator are established, showing that it has the same asymptotic variance as the traditional post-stratified estimator with fixed strata. Simulation experiments demonstrate that the practical effect of first fitting a model to the survey data before post-stratifying is small, even for relatively small sample sizes.
description: Published in at http://dx.doi.org/10.1214/009053607000000703 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
On energy ground states among crystal lattice structures with prescribed bonds
Creators: name: Bétermin, Laurent
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: Optimization and Control (math.OC)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 74G65, 82B20

description: We consider pairwise interaction energies and we investigate their minimizers among lattices with prescribed minimal vectors (length and coordination number), i.e. the one corresponding to the crystal's bonds. In particular, we show the universal minimality -- i.e. the optimality for all completely monotone interaction potentials -- of strongly eutactic lattices among these structures. This gives new optimality results for the square, triangular, simple cubic (SC), face-centred-cubic (FCC) and body-centred-cubic (BCC) lattices in dimensions 2 and 3 when points are interacting through completely monotone potentials. We also show the universal maximality of the triangular and FCC lattices among all lattices with prescribed bonds. Furthermore, we apply our results to Lennard-Jones type potentials, showing the minimality of any universal minimizer (resp. maximizer) for small (resp. large) bond lengths, where the ranges of optimality are easily computable. Finally, a numerical investigation is presented where a phase transition of type "square-rhombic-triangular" (resp. "SC-rhombic-BCC-rhombic-FCC") in dimension $d=2$ (resp. $d=3$) among lattices with more than 4 (resp. 6) bonds is observed.
description: 16 pages. 2 Figures. Version accepted in Journal of Physics A
Αugmented reality in language education: contributing to the development of oral skills and the motivation of students studying french as a foreign language
Creators: name: Μπιμπούδη, Ασημίνα Σταύρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Επαυξημένη Πραγματικότητα
Γαλλική Γλώσσα
Γλωσσική Εκπαίδευση
Augmented Reality
French Language
Language Learning

description: The Augmented Reality field is still very immature; however it seems to be a beneficial educational tool. AR in education increases motivation, attention, concentration and satisfaction. The purpose of this paper is to approach the subject of augmented reality and how it can ameliorate the teaching work, the learning of French and especially the development of oral skills. The researcher aim to give the learners the motive to express themselves in French and the same time make them feel comfortable and self-confident while doing it. More precisely, in this thesis, the concept of augmented reality is clarified and presented in detail. Some kind of AR platforms and mobile applications are mentioned and described too. The concept of language education is presented, as well as various aspects of it. It is also mentioned how motivation, promoted autonomy and collaboration can affect the learning progress. Also there are presented New Technologies and tools that can positively increase motivation and encourage collaboration inside the class. Moreover it is analyzed how AR can improve the experience and French language learning, as well as its potentials into a school environment.
description: Το πεδίο της Επαυξημένης Πραγματικότητας συνεχίζει να είναι πολύ ανώριμο, παρόλα αυτά μπορεί να αποτελέσει ένα πολύ σημαντικό εκπαιδευτικό εργαλείο. Η ΕΠ στην εκπαίδευση αυξάνει την κινητροδότηση, την προσοχή, τη συγκέντρωση και την ευχαρίστηση του σπουδαστή. Ο στόχος αυτής της διατριβής είναι να προσεγγίσει την έννοια της επαυξημένης πραγματικότητας και να μελετήσει πως μπορεί να βελτιώσει την διδασκαλία και τη μάθηση της Γαλλικής γλώσσας, και πιο συγκεκριμένα την ανάπτυξη των προφορικών δεξιοτήτων. Η ερευνήτρια στοχεύει να κινητροδοτήσει τους μαθητές να μιλήσουν Γαλλικά και παράλληλα να τους κάνει να νιώθουν άνεση και αυτοπεποίθηση όσο το κάνουν. Πιο συγκεκριμένα, σε αυτή τη διατριβή παρουσιάζεται και ξεκαθαρίζεται με λεπτομέρειες η έννοια της ΕΠ και αναφέρονται κάποιες πλατφόρμες, καθώς επίσης και εφαρμογές κινητών τηλεφώνων που την υποστηρίζουν. Αναλύεται η έννοια της γλωσσικής εκπαίδευσης, καθώς και ποικίλες πτυχές της. Παρουσιάζεται επίσης η επιρροή του κίνητρου, της αυτονομίας και της συνεργασίας στην εκπαιδευτική διαδικασία. Στη συνέχεια αναφέρονται Νέες Τεχνολογίες και εργαλεία που μπορούν να συμβάλουν θετικά στην κινητροδότηση και στην συνεργασία μέσα στην τάξη. Επιπλέον αναλύεται πως η ΕΠ μπορεί να βελτιώσει την μαθησιακή εμπειρία και την εκμάθηση των Γαλλικών, καθώς επίσης οι προοπτικές της χρήσης της σε ένα σχολικό περιβάλλον.
A Note about Stabilization in $A_\R(\D)$
Creators: name: Wick, Brett D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: Primary 46E25; 46J10

description: It is shown that for $A_\R(\D)$ functions $f_1$ and $f_2$ with $$ \inf_{z\in\bar{\D}}(\abs{f_1(z)}+\abs{f_2(z)})\geqδ>0 $$ and $f_1$ being positive on real zeros of $f_2$ then there exists $A_\R(\D)$ functions $g_2$ and $g_1,g_1^{-1}$ with and $$ g_1f_1+g_2f_2=1\quad\forall z\in\bar{\D}. $$ This result is connected to the computation of the stable rank of the algebra $A_\R(\D)$ and to Control Theory.
description: 5 pages, to appear in Math. Nachr
Relevant coherent states method for the quantum adiabatic dynamics of lattice-coupled charge carriers
Creators: name: Barisic, O. S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A new numerical method is proposed for determining the low-frequency dynamics of the charge carrier coupled to the deformable quantum lattice. As an example, the polaron band structure is calculated for the one-dimensional Holstein model. The adiabatic limit on the lattice, which cannot be reached by other approaches, is investigated. In particular, an accurate description is obtained of the crossover between quantum small adiabatic polarons, pinned by the lattice, and large adiabatic polarons, moving along the continuum as classical particles. It is shown how the adiabatic contributions to the polaron dispersion, involving spatial correlations over multiple lattice sites, can be treated easily in terms of coherent states.
description: 6 pages, 2 figures
Learning to Trust: Understanding Editorial Authority and Trust in Recommender Systems for Education
Creators: name: Hassan, Taha
name: Edmison, Bob
name: Stelter, Timothy
name: McCrickard, D. Scott
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Trust in a recommendation system (RS) is often algorithmically incorporated using implicit or explicit feedback of user-perceived trustworthy social neighbors, and evaluated using user-reported trustworthiness of recommended items. However, real-life recommendation settings can feature group disparities in trust, power, and prerogatives. Our study examines a complementary view of trust which relies on the editorial power relationships and attitudes of all stakeholders in the RS application domain. We devise a simple, first-principles metric of editorial authority, i.e., user preferences for recommendation sourcing, veto power, and incorporating user feedback, such that one RS user group confers trust upon another by ceding or assigning editorial authority. In a mixed-methods study at Virginia Tech, we surveyed faculty, teaching assistants, and students about their preferences of editorial authority, and hypothesis-tested its relationship with trust in algorithms for a hypothetical `Suggested Readings' RS. We discover that higher RS editorial authority assigned to students is linked to the relative trust the course staff allocates to RS algorithm and students. We also observe that course staff favors higher control for the RS algorithm in sourcing and updating the recommendations long-term. Using content analysis, we discuss frequent staff-recommended student editorial roles and highlight their frequent rationales, such as perceived expertise, scaling the learning environment, professional curriculum needs, and learner disengagement. We argue that our analyses highlight critical user preferences to help detect editorial power asymmetry and identify RS use-cases for supporting teaching and research
description: (UMAP '21) Proceedings of the 29th ACM Conference on User Modeling, Adaptation and Personalization, June 21 - 25, 2021 (Utrecht, the Netherlands)
Semantic Models for the First-stage Retrieval: A Comprehensive Review
Creators: name: Guo, Jiafeng
name: Cai, Yinqiong
name: Fan, Yixing
name: Sun, Fei
name: Zhang, Ruqing
name: Cheng, Xueqi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Multi-stage ranking pipelines have been a practical solution in modern search systems, where the first-stage retrieval is to return a subset of candidate documents, and latter stages attempt to re-rank those candidates. Unlike re-ranking stages going through quick technique shifts during past decades, the first-stage retrieval has long been dominated by classical term-based models. Unfortunately, these models suffer from the vocabulary mismatch problem, which may block re-ranking stages from relevant documents at the very beginning. Therefore, it has been a long-term desire to build semantic models for the first-stage retrieval that can achieve high recall efficiently. Recently, we have witnessed an explosive growth of research interests on the first-stage semantic retrieval models. We believe it is the right time to survey current status, learn from existing methods, and gain some insights for future development. In this paper, we describe the current landscape of the first-stage retrieval models under a unified framework to clarify the connection between classical term-based retrieval methods, early semantic retrieval methods and neural semantic retrieval methods. Moreover, we identify some open challenges and envision some future directions, with the hope of inspiring more researches on these important yet less investigated topics.
description: Accepted by TOIS
An Indian Perspective of Self-Esteem
Creators: name: Pepper, Floy C.
name: Henry, Steven L.
Publisher: name: Canadian Journal of Native Education
Year: 2021

description: This article discusses the concept of self-esteem within the context of the Indian perspective of the wholeness of life. The authors integrate the Indian symbol of the Medicine Wheel, representing the whole life context, with self-esteem as a way of understanding the child’s development within his or her social context. Conditions for self-esteem are associated with the four directions of the Medicine Wheel and common Indian symbolism and interpreta­tions of these directions are presented. Self-esteem is described in terms of four social condi­tions, that is, power, uniqueness, connectiveness, and models necessary to the development of positive self-esteem in children. A model of self-esteem, differentiated from self-concept, includes constructs of self-worth and self-efficacy. Considerations, concerns, and sugges­tions for promoting positive self-esteem are discussed under each condition. The Medicine Wheel, shown as intact, reflecting high self-esteem contrasted with broken, reflecting low self-esteem, is used to portray positive individual development.
description: Canadian Journal of Native Education, Vol. 18 No. 2 (1991)
High-order phase-dependent asymmetry in the above-threshold ionization plateau
Creators: name: Kübel, M.
name: Wustelt, P.
name: Zhang, Y.
name: Skruszewicz, S.
name: Hoff, D.
name: Würzler, D.
name: Kang, H.
name: Zille, D.
name: Adolph, D.
name: Sayler, A. M.
name: Paulus, G. G.
name: Dumergue, M.
name: Nayak, A.
name: Flender, R.
name: Haizer, L.
name: Kurucz, M.
name: Kiss, B.
name: Kühn, S.
name: Fetić, B.
name: Milošević, D. B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Above-threshold ionization spectra from cesium are measured as a function of the carrier-envelope phase (CEP) using laser pulses centered at 3.1 $μ$m wavelength. The directional asymmetry in the energy spectra of backscattered electrons oscillates three times, rather than once, as the CEP is changed from $0$ to $2π$. Using the improved strong-field approximation, we show that the unusual behavior arises from the interference of few quantum orbits. We discuss the conditions for observing the high-order CEP dependence, and draw an analogy with time-domain holography with electron wave packets.
Nondegenerate Representations of Continuous Product Systems
Creators: name: Skeide, Michael
Publisher: name: arXiv
Year: 2006
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46L55, 46L08, 46L53

description: We show that every (continuous) faithful product system admits a (continuous) faithful nondegenerate representation. For Hilbert spaces this is equivalent to Arveson's result that every Arveson system comes from an E_0-semigroup. We point out that for Hilbert modules this is not so. As applications we show a C*-algebra version of a result for von Neumann algebras due to Arveson and Kishimoto, and a result about existence of elementary dilations for (semi-)faithful CP-semigroups.
description: Condensed, to appear in J. Operator Theory
Grammatical elicitation: Epistemic indefinites
Creators: name: Yegon, Kiplangat
name: Bossi, Madeline
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: sgc

description: One .mp4 file and one .pdf file. Elicitation of the syntactic properties of epistemic indefinites with a focus on their inability to co-occur with possession. Also looking for epistemic indefinite forms for words with different morphological shapes.
Preparation and probing of the ground state coherence in Rubidium
Creators: name: Oberst, Martin
name: Vewinger, Frank
name: Lvovsky, A. I.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We demonstrate the preparation and probing of the coherence between the hyperfine ground states |5S_{1/2}, F=1> and |5S_{1/2}, F=2> of the Rubidium 87 isotope. The effect of various coherence control techniques, i.e. fractional Stimulated Raman Adiabatic Passage and Coherent Population Return on the coherence are investigated. These techniques are implemented using nearly degenerate pump and Stokes lasers at 795nm (Rubidium D1 transition) which couple the two hyperfine ground states via the excited state |5P_{1/2}, F=1> through a resonant two-photon process, in which a coherent superposition of the two hyperfine ground states is established. The medium is probed by an additional weak laser, which generates a four-wave mixing signal proportional to the ground state coherence, and allows us to monitor its evolution in time. The experimental data are compared with numerical simulations.
Perfect flat band with chirality and charge ordering out of strong spin-orbit interaction
Creators: name: Nakai, Hiroki
name: Hotta, Chisa
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Spin-orbit interaction established itself as a major role player for emergent phenomena in modern condensed matter including a topological insulator, spin liquid and spin-dependent transports. However, its function is rather limited to adding topological nature to each phases of matter. We prove by our spinor line graph theory that a very strong spin-orbit interaction realized in 5d pyrochlore electronic systems generates multiply degenerate perfect flat bands. Unlike any of the previous flat bands, the electrons living there localize in real space by destructively interfering with each other in a spin selective manner ruled by the SU(2) gauge field. These electrons avoid the Coulomb interaction by self-organizing their localized wave functions. This gives rise to the trimerized charge ordering hand in hand with a stiff spin chirality, which may explain the recently found exotic low-temperature insulating phase of CsW2O6.
description: 11pages, 7 figures
Ανίχνευση φαρμακευτικών στόχων για νευροεκφυλιστικές παθήσεις σε δείγματα μονιμοποιημένου εγκεφαλικού ιστού
Creators: name: Κωνσταντινίδου, Πολυάνθη Σάββα
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Νευροεκφυλιστικές παθήσεις
Ψυχοτρόπα φάρμακα
Ψυχοαναληπτικά φάρμακα
Neurodegenerative diseases
Psychotropic drugs
Antipsychotics drugs

description: Ο στόχος της παρούσας διπλωματικής εργασίας, αφορά τα φάρμακα-στόχους ενάντια στις νευροεκφυλιστικές παθήσεις και την ανίχνευση δραστικών ουσιών σε δείγματα εγκεφαλικού ιστού. Οι νευροεκφυλιστικές ασθένειες είναι ανίατες παθήσεις που επιφέρουν αναπηρία και οδηγούν στην προοδευτική εκφύλιση ή/και τον θάνατο των νευρικών κυττάρων. Αυτή η εξέλιξη προκαλεί προβλήματα στην κίνηση (αταξία) ή στη νοητική λειτουργία (άνοια). Οι κυριότερες νευροκεφυλιστικές παθήσεις είναι η νόσος Alzheimer με ποσοστό εμφάνισης 60%-70% και άλλες μορφές άνοιας. Οι νευροεκφυλιστικές ασθένειες συνοψίζονται παρακάτω: • η νόσος Alzheimer (AD) και άλλες μορφές άνοιας • η νόσος Parkinson (PD) και οι σχετιζόμενες με την PD διαταραχές • οι Prion ασθένειες • οι νόσοι του κινητικού νευρώνα (MND) • η νόσος Huntington (HD) • η νωτιαιοπαρεγκεφαλιδική αταξία (SCA) • η νωτιαία μυϊκή ατροφία (SMA). Η φαρμακευτική αγωγή των παραπάνω παθήσεων περιλαμβάνει ντοπαμινεργικά φάρμακα, αναστολείς χολινεστεράσης, αντιψυχωσικά- αντικαταθλιπτικά και ψυχοαναληπτικά φάρμακα. Σκοπός της μελέτης αυτής είναι η παρουσίαση και κατηγοριοποίηση των ανωτέρω φαρμάκων και η ανίχνευση ορισμένων δραστικών ουσιών σε νεκροτομικό μονιμοποιημένο εγκεφαλικό ιστό.
description: The aim of the present thesis is to investigate the objective drugs against neurodegenerative diseases and the detection of active substances in samples of brain tissue. Neurodegenerative diseases are a heterogeneous group of disorders that are characterized by the progressive degeneration of the structure and function of the central nervous system or peripheral nervous system. This development causes problems in movement (disorder) or mental functioning (dementia). The various forms of dementia are responsible for the greater burden of these diseases, with Alzheimer's disease accounting for approximately 60-70% of cases. Neurodegenerative diseases are summarized below: • Alzheimer's disease (AD) and other forms of dementia • Parkinson's disease (PD) and PD-related disorders • Prion disease • Motor neuron disease (MND) • Huntington's disease (HD) • Spinal cord ataxia (SCA) • Spinal muscular atrophy (SMA). The treatment of the above conditions includes dopaminergic drugs, cholinesterase inhibitors, antipsychotic-antidepressants and psychoactive drugs. The purpose of this study is to present and categorize the above drugs and to detect certain active substances in necrotized brain tissue.
Spin-torque shot noise in magnetic tunnel junctions
Creators: name: Chudnovskiy, A. L.
name: Swiebodzinski, J.
name: Kamenev, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Spin polarized current may transfer angular momentum to a ferromagnet, resulting in a spin-torque phenomenon. At the same time the shot noise, associated with the current, leads to a non-equilibrium stochastic force acting on the ferromagnet. We derive stochastic version of Landau-Lifshitz-Gilbert equation for a magnetization of a ''free'' ferromagnetic layer in contact with a ''fixed'' ferromagnet. We solve the corresponding Fokker-Planck equation and show that the non-equilibrium noise yields to a non-monotonous dependence of the precession spectrum linewidth on the current.
description: 5 pages, 2 figures
Optimize quantum simulation using a force-gradient integrator
Creators: name: Zou, Yi-Tong
name: Bo, Yu-Jiao
name: Yang, Ji-Chong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum simulation has shown great potential in many fields due to its powerful computational capabilities. However, the limited fidelity can lead to a severe limitation on the number of gate operations, which requires us to find optimized algorithms. Trotter decomposition and high order Trotter decompositions are widely used in quantum simulations. We find that they can be significantly improved by force-gradient integrator in lattice QCD. By using two applications as examples, we show that the force-gradient decomposition can reduce the number of gate operations up to about a third of those using high order Trotter decompositions. Therefore, force-gradient decomposition shows a great prospective in future applications of quantum simulation.
description: 7 pages, 5 figures