cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Adiabatic Condition and Quantum Geometric Potential
Creators: name: Wu, Jianda
name: Zhao, Meisheng
name: Chen, Jianlan
name: Zhang, Yongde
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, we present a U(1)-invariant expansion theory of the adiabatic process. As its application, we propose and discuss new sufficient adiabatic approximation conditions. In the new conditions, we find a new invariant quantity referred as quantum geometric potential (QGP) contained in all time-dependent processes. Furthermore, we also give detailed discussion and analysis on the properties and effects of QGP.
description: 5 pages, 1 figure
The hadronic $τ$ decay $τ^-\to K_1^-ν_τ\to (K^-ω) ν_τ\to (K^- π^+π^-π^0)ν_τ$ and the axial vector mixing angle
Creators: name: Hayasaka, K.
name: Huang, Z.
name: Kou, E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We propose to measure the $τ^-\to K_1^-ν_τ\to (K^-ω) ν_τ\to (K^- π^+π^-π^0)ν_τ$ decay in order to determine the $K_1$ axial vector mixing angle $θ_{K_1}$. We derive, for the first time, the differential decay rate formula for this decay mode. Using the obtained result, we perform a sensitivity study for the Belle (II) experiment. We will show that the $K^-π^+π^-π^0$ spectrum of the $τ^-\to K_1^-ν_τ\to (K^-ω) ν_τ\to (K^- π^+π^-π^0)ν_τ$ decay can discriminate the two solutions $θ_{K_1}=\sim 30^{\circ}$ or $\sim 60^{\circ}$ observed in the other measurements.
description: 14 pages, 2 figures
NON-MEMORY-BASED AND REAL-TIME ZEROTREE BUILDING FOR WAVELET ZEROTREE CODING SYSTEMS
Creators: name: Lu, Mi
Publisher: name: figshare
Year: 2021
Subjects: subject: 80106 Image Processing
subject: FOS: Computer and information sciences

description: The wavelet zerotree coding systems, including Embedded Zerotree Wavelet (EZW)[1] and its variants Set Partitioning In Hierarchical Trees (SPIHT)[2] and Space Frequency Quantization (SFQ)[3][4], have three common procedures:1) 2-D Discrete Wavelet Transform (DWT)[5], 2) zerotree building and symbol generation from the wavelet coefficients (illustrated in Figure 1), and 3) quantization of the magnitudes of signifi?cant coefficients and entropy coding, where the second procedure is an important one. All recently proposed architectures ([6]-[9]) for wavlelet zerotree coding use memories to build zerotrees. In this paper wecontribute to building the zerotrees in a non-memory-based way with real-time performance leading to the decrease of hardware cost and the incensement of processing rate which is especially desirable in video coding. One of our main ideas is to rearrange the DWT calculations taking advantage of parallel and pipelined processing that show any parent coefficient and its children coefficientsin zerotrees are guaranteed to be calculated and outputted simultaneously.
Halo shapes constrained from a pure sample of central galaxies in KiDS-1000
Creators: name: Georgiou, Christos
name: Hoekstra, Henk
name: Kuijken, Konrad
name: Bilicki, Maciej
name: Dvornik, Andrej
name: Erben, Thomas
name: Giblin, Benjamin
name: Heymans, Catherine
name: Hildebrandt, Hendrik
name: de Jong, Jelte T. A.
name: Kannawadi, Arun
name: Schneider, Peter
name: Schrabback, Tim
name: Shan, HuanYuan
name: Wright, Angus H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present measurements of $f_h$, the ratio of the aligned components of the projected halo and galaxy ellipticities, for a sample of central galaxies using weak gravitational lensing data from the Kilo-Degree Survey (KiDS). Using a lens galaxy shape estimation that is more sensitive to outer galaxy regions, we find $f_{\rm h}=0.50\pm0.20$ for our full sample and $f_{\rm h}=0.55\pm0.19$ for an intrinsically red (and therefore higher stellar-mass) sub-sample, rejecting the hypothesis of round halos and/or galaxies being un-aligned with their parent halo at $2.5σ$ and $2.9σ$, respectively. We quantify the 93.4% purity of our central galaxy sample using numerical simulations and overlapping spectroscopy from the Galaxy and Mass Assembly survey. This purity ensures that the interpretation of our measurements is not complicated by the presence of a significant fraction of satellite galaxies. Restricting our central galaxy ellipticity measurement to the inner isophotes, we find $f_{\rm h}=0.34\pm0.17$ for our red sub-sample, suggesting that the outer galaxy regions are more aligned with their dark matter halos compared to the inner regions. Our results are in agreement with previous studies and suggest that lower mass halos are rounder and/or less aligned with their host galaxy than samples of more massive galaxies, studied in galaxy groups and clusters.
description: Accepted for publication in A&A
Εντοπισμός και αξιολόγηση αστοχιών στη φαρμακοθεραπεία και τη συμμόρφωση ασθενών που προμηθεύονται τα φάρμακα τους από συνοικιακό φαρμακείο
Creators: name: Αθανασιάδης, Θεόδωρος Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Κλινική Φαρμακολογία
Βιομηχανική Φαρμακολογία
Καταγραφή
Clinical Pharmacology
Industrial Pharmacology
Reference

description: Σκοπός της διπλωματικής εργασίας αποτελεί η διερεύνηση των δυνατοτήτων ενός συνοικιακού φαρμακείου να εντοπίζει πιθανές αστοχίες στη φαρμακοθεραπεία των ασθενών, καθώς επίσης και να ελέγχει τη συμμόρφωση ή μη των ασθενών σε αυτής. Πραγματοποιήθηκε ανάλυση και καταγραφή της διαδικασίας της φαρμακοθεραπείας και εντοπίστηκαν σημεία που μπορεί να οδηγήσουν σε λάθη ή αστοχίες. Καταγράφηκε η συνέπεια των ασθενών να πραγματοποιούν τακτικούς ελέγχους της πάθησης τους, η συμμόρφωση τους στις οδηγίες των ιατρών καθώς επίσης και η τακτική λήψη σκευασμάτων αυτοθεραπείας πέρα από ό,τι συνταγογραφήθηκε από τους γιατρούς. Έγινε έλεγχος και καταγραφή των πιθανών αλληλεπιδράσεων μεταξύ των συνταγογραφημένων σκευασμάτων καθώς και των πιθανών λαθών στη συνταγογράφηση των φαρμάκων.
description: The purpose of the thesis is to investigate if a community pharmacy can detect possible failures in patients' pharmacotherapy as well as, to check whether patients comply with it or not. An analysis and recording of the pharmacotherapy process was carried out and possible errors or failures were detected. Patients' consistency in regular checkups of their illness was investigated. In addition, patients’ compliance to physician's instructions was recorded and if they take extra self-medication preparation. Potential interactions between prescribed drugs and potential errors in prescribing process have been checked and documented.
Estimating indoor occupancy through low-cost BLE devices
Creators: name: Demrozi, Florenc
name: Turetta, Cristian
name: Chiarani, Fabio
name: Kindt, Philipp H.
name: Pravadelli, Graziano
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Detecting the presence of persons and estimating their quantity in an indoor environment has grown in importance recently. For example, the information if a room is unoccupied can be used for automatically switching off the light, air conditioning, and ventilation, thereby saving significant amounts of energy in public buildings. Most existing solutions rely on dedicated hardware installations, which involve presence sensors, video cameras, and carbon dioxide sensors. Unfortunately, such approaches are costly, are subject to privacy concerns, have high computational requirements, and lack ubiquitousness. The work presented in this article addresses these limitations by proposing a low-cost occupancy detection system. Our approach builds upon detecting variations in Bluetooth Low Energy (BLE) signals related to the presence of humans. The effectiveness of this approach is evaluated by performing comprehensive tests on five different datasets. We apply several pattern recognition models and compare our methodology with systems building upon IEEE 802.11 (WiFi). On average, in multifarious environments, we can correctly classify the occupancy with an accuracy of 97.97%. When estimating the number of people in a room, on average, the estimated number of subjects differs from the actual one by 0.32 persons. We conclude that our system's performance is comparable to that of existing ones based on WiFi, while significantly reducing cost and installation effort. Hence, our approach makes occupancy detection practical for real-world deployments.
description: 7 Tabels, 2 Figures, 9 Pages
Αντιλήψεις εκπαιδευτικών αναφορικά με τη διδασκαλία του γλωσσικού μαθήματος σε μαθητές με δυσλεξία
Creators: name: Θωμαΐδου, Άννα Τρύφωνα
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Αντιλήψεις εκπαιδευτικών
Δυσλεξία
Μαθησιακές δυσκολίες
Teachers’ beliefs
Dyslexia
Learning disabilities

description: Η παρούσα εργασία διερευνά τις αντιλήψεις των εκπαιδευτικών αναφορικά με τη διδασκαλία του γλωσσικού μαθήματος σε μαθητές με δυσλεξία. Στο πρώτο μέρος, ορίζεται το θεωρητικό πλαίσιο των μαθησιακών δυσκολιών (ΜΔ) και της δυσλεξίας και επιχειρείται μια βιβλιογραφική επισκόπηση των αντιλήψεων των εκπαιδευτικών και των παραγόντων που τις καθορίζουν, σε παγκόσμιο επίπεδο. Το δεύτερο μέρος της εργασίας επικεντρώνεται στην έρευνα. Αρχικά, ορίζεται το θεωρητικό πλαίσιο της έρευνας και στη συνέχεια γίνεται μια εισαγωγή στο εργαλείο που χρησιμοποιήθηκε στην παρούσα έρευνα. Ακολουθεί η ανάλυση των αποτελεσμάτων και επιχειρείται ο καθορισμός των παραγόντων που διαμορφώνουν τις αντιλήψεις των εκπαιδευτικών. Διατυπώνονται οι περιορισμοί της έρευνας και γίνεται συζήτηση των αποτελεσμάτων της.
description: The present thesis deals with teachers’ beliefs regarding teaching language to students with dyslexia. In the first part the theoretical context of learning disabilities (LD) and dyslexia is defined. In addition, a bibliographical research of teachers’ beliefs and the factors that define them worldwide is attempted. The second part presents the research. At first, the theoretical context of the research is defined and an introduction of the questionnaire is attempted. Consequently there is an analysis of the results and the factors that define teachers’ beliefs. The limitations of the research and the results are being discussed.
Group theoretic approach to many-body scar states in fermionic lattice models
Creators: name: Pakrouski, Kiryl
name: Pallegar, Preethi N.
name: Popov, Fedor K.
name: Klebanov, Igor R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It has been shown [arXiv:2007.00845] that three families of highly symmetric states are many-body scars for any spin-1/2 fermionic Hamiltonian of the form $H_0+OT$, where $T$ is a generator of an appropriate Lie group. One of these families consists of the well-known $η$-pairing states. In addition to having the usual properties of scars, these families of states are insensitive to electromagnetic noise and have advantages for storing and processing quantum information. In this paper we show that a number of well-known coupling terms, such as the Hubbard and the Heisenberg interactions, and the Hamiltonians containing them, are of the required form and support these states as scars without fine-tuning. The explicit $H_0+OT$ decomposition for a number of most commonly used models, including topological ones, is provided. To facilitate possible experimental implementations, we discuss the conditions for the low-energy subspace of these models to be comprised solely of scars. Further, we write down all the generators $T$ that can be used as building blocks for designing new models with scars, most interestingly including the spin-orbit coupled hopping and superconducting pairing terms. We expand this framework to the non-Hermitian open systems and demonstrate that for them the scar subspace continues to undergo coherent time evolution and exhibit the "revivals". A full numerical study of an extended 2D $tJU$ model explicitly illustrates the novel properties of the invariant scars and supports our findings.
description: v3: presentation improved, typos corrected, references added
Mn Dimer can be Described Accurately with Density Functional Calculations when Self-interaction Correction is Applied
Creators: name: Ivanov, Aleksei V.
name: Ghosh, Tushar K.
name: Jónsson, Elvar Ö.
name: Jónsson, Hannes
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Qualitatively incorrect results are obtained for the Mn dimer in density functional theory calculations using the generalized gradient approximation (GGA) and similar results are obtained from local density and meta-GGA functionals. The coupling is predicted to be ferromagnetic rather than antiferromagnetic and the bond between the atoms is predicted to be an order of magnitude too strong and about an Ångstrøm too short. Explicit, self-interaction correction (SIC) applied to a commonly used GGA energy functional, however, provides close agreement with both experimental data and high-level, multi-reference wave function calculations. These results show that the failure is not due to strong correlation but rather the single electron self-interaction that is necessarily introduced in estimates of the classical Coulomb and exchange-correlation energy when only the total electron density is used as input. The corrected functional depends explicitly on the orbital densities and can, therefore, avoid the introduction of self-Coulomb interaction. The error arises because of over-stabilization of bonding $d$-states in the minority spin channel resulting from an overestimate of the $d$-electron self-interaction in the semi-local exchange-correlation functionals. Since the computational effort in the self-interaction corrected calculations scales with system size in the same way as for regular semi-local functional calculations, this approach provides a way to calculate properties of Mn nanoclusters as well as biomolecules and extended solids where Mn dimers and larger cluster are present, while multi-reference wave function calculations can only be applied to small systems.
description: 20 pages, 4 figures
H χρήση των ταμπού στη διαφήμιση: η επίδραση της έκπληξης, του εκνευρισμού και του αντιληπτού ταμπού
Creators: name: Καραφύλλη, Μαρία-Ειρήνη Παναγιώτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Ταμπού
Διαφήμιση
Εκνευρισμός
Taboo
Advertising
Irritation

description: Η παρούσα εργασία ερευνά τη χρήση των ταμπού στη διαφήμιση (Taboo Advertising) και την επίδραση της «έκπληξης», του «αντιληπτού ταμπού» και του «εκνευρισμού» στη στάση του αποδεκτών προς τη διαφήμιση, προς το διαφημιστικό μήνυμα και τη διάθεση τους να μοιραστούν μια ταμπού διαφήμιση με τον κοινωνικό τους περίγυρο. Επιπλέον μελετά το ρόλο του φύλου ως προς την αντίδρασή τους και τη στάση τους προς τη διαφήμιση. Αρχικά, γίνεται μια ανασκόπηση της διεθνούς αρθρογραφίας και βιβλιογραφίας επάνω στο αντικείμενο του ταμπού και της σημασίας του, από κοινωνιολογικής κυρίως άποψης, καθώς και στην έννοια του «Taboo Advertising», δηλαδή της χρήσης ταμπού στη διαφήμιση ως επικοινωνιακή στρατηγική και της εφαρμογής της. Έπειτα, αναφέρονται οι σημαντικότεροι παράγοντες που επηρεάζουν τη στρατηγική αυτή, όπως και ο τρόπος με τον οποίο επιδρούν. Το δεύτερο σκέλος παρουσιάζεται η ίδια η έρευνα στην ολότητά της, από το σχεδιασμό έως και την ανάλυση των αποτελεσμάτων
description: The present study investigates the use of taboo in advertising (Taboo Advertising) and its effect through the intermediary variables of “surprise”, “perceived taboo” and “irritation” to the audience’s attitude towards the advertisement and the advertising message, as well as their willingness to share a “taboo advertisement” with their social environment. Furthermore, it investigates the difference in reactions and attitudes towards the advertisement, depending on the gender of the audience. The international literature is being reviewed on the subject of “taboo” and its meaning from a sociological perspective. In addition, the reader is introduced to the term “Taboo Advertising”, namely the use of taboo words, images and insinuations, as a communication strategy and the manner in which it is applied. Basic factors that affect the above strategy are also presented, along with the way in which they influence the strategy itself. The second part includes a detailed description of the research that was conducted in the context of this study, including its design and data analysis
Αναγνώριση καμπυλών από 2-D Point-Cloud και ταξινόμηση αντικειμένων με χρήση μεθόδων τεχνητής νοημοσύνης
Creators: name: Μελέτης, Αλέξανδρος Θεοδώρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Αναγνώριση Καμπυλών
Ταξινόμηση Αντικειμένων
Υπολογιστική Όραση
Νευρωνικά Δίκτυα
Curve Recognition
Object Classification
Computer Vision
Neural Networks

description: Σκοπός της παρούσας διατριβής ήταν η αναγνώριση καμπυλών από ένα διδιάστατο σύνολο σημείων (2-D Point-Cloud). Στη συνέχεια επεκτείνουμε την έρευνα αυτή στην ταξινόμηση αντικειμένων από εικόνες. Βασικό στάδιο είναι αυτό της εξαγωγής του χαρακτηριστικού που θα χρησιμοποιήσουμε για την παραπάνω διαδικασία. Αυτό επιλέχθηκε να είναι η καμπυλότητα λόγω της πολύ σημαντικής ιδιότητας της ανεξαρτησίας αυτής ως προς το Σύστημα Συντεταγμένων. Αναπτύσσουμε διάφορες τεχνικές για την εκτίμησή της από το Point-Cloud και αναλύουμε τα θετικά και αρνητικά κάθε τεχνικής, προτού καταλήξουμε στη βέλτιστη. Στη συνέχεια μελετάμε την καμπυλότητα σε έτοιμες καμπύλες-συναρτήσεις και εξετάζουμε πως επιδρά η στροφή του Cloud και η προσθήκη θορύβου. Τέλος επιχειρούμε ταξινόμηση των συναρτήσεων αυτών για διάφορες περιπτώσεις και πετυχαίνουμε πολύ ικανοποιητικά ποσοστά ταξινόμησης. Επόμενο βήμα είναι η επέκταση σε καμπύλες που προέρχονται από εικόνες και η χρήση αυτών για ταξινόμηση των αντικειμένων. Αφού επεξεργαστούμε μια εικόνα και εξάγουμε το περίγραμμα ενός αντικειμένου, υπολογίζουμε την καμπυλότητα και χρησιμοποιώντας αυτήν πραγματοποιούμε την ταξινόμηση του. Η ταξινόμηση ερευνάται για τρεις διαφορετικές τεχνικές και γίνεται με τη χρήση Τεχνητών Νευρωνικών Δικτύων. Τα αποτελέσματα σωστής ταξινόμησης αγγίζουν το 99%
description: The aim of the present thesis was the Curve Recognition from a 2-D Point-Cloud. Then we extend this research to classify objects from images. The first step is to extract the feature that we are going to use for this purpose. This was chosen to be the curvature due to it’s very important characteristic of the independence from the Coordinate System. We develop various techniques for it’s estimation from the Point-Cloud and analyze the positive and negative aspects of each technique in order to choose the best one. Then we extract the curvature from prepared curves-functions and we examine the affection of the Cloud’s rotation and the noise addition to it. Finally, we try to classify these functions testing various cases and we achieve very satisfactory classification rates. The next step is to extend this technique to curves derived from images and use them to classify objects. After we process an image and extract the contour of an object, we calculate the curvature and then we perform the object classification using it. Classification is investigated for three different techniques and is done using Artificial Neural Networks. Correct classification results reach 99%.
description: Σε συνεργασία με Λογιστικής και Χρηματοοικονομικής (Πανεπιστήμιο Μακεδονίας)
Understanding Flare Statistics of Young Stars with TESS and Machine Learning
Creators: name: Feinstein, Adina
name: Montet, Benjamin
name: Ansdell, Megan
name: Nord, Brian
name: Bean, Jacob
name: Günther, Maximillian
name: Gully-Santiago, Michael
name: Schlieder, Joshua
Publisher: name: Zenodo
Year: 2021
Subjects: young stars
cool stars 20.5

description: The evolution of young stellar magnetic fields is not well understood. By studying observable proxies, such as stellar flares and starspots, we can begin to better understand such mechanisms. All-sky photometric time-series missions have allowed for the monitoring of thousands of young stars to understand the evolution of stellar activity. We have developed a convolutional neural network, stella, specifically trained to find flares in TESS short-cadence data. We applied the network to 3200 young stars to evaluate flare rates as a function of age and spectral type. We also measured rotation periods for 1500 of our targets and found that flares of all amplitudes are present across all spot phases, suggesting high spot coverage across the entire surface. Additionally, flare rates and amplitudes decrease for stars older than 50 Myr across all temperatures hotter than 4000 K, while cooler stars show no evolution across 800 Myr. Cooler stars also show higher flare rates and amplitudes across all ages, particularly those that are fully convective.
description: {"references": ["Feinstein, A. D., Montet, B. T., Ansdell, M. et al. (2020), arXiv:2005.07710", "Feinstein, A. D., Montet, B. T., & Ansdell, M. (2020), Reference for associated software: 10.21105/joss.02347"]}
Determination of $\overline{m}_b/\overline{m}_c$ and $\overline{m}_b$ from $n_f=4$ lattice QCD$+$QED
Creators: name: Hatton, D.
name: Davies, C. T. H.
name: Koponen, J.
name: Lepage, G. P.
name: Lytle, A. T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We extend HPQCD's earlier $n_f=4$ lattice-QCD analysis of the ratio of $\overline{\mathrm{MSB}}$ masses of the $b$ and $c$ quark to include results from finer lattices (down to 0.03fm) and a new calculation of QED contributions to the mass ratio. We find that $\overline{m}_b(μ)/\overline{m}_c(μ)=4.586(12)$ at renormalization scale $μ=3$\,GeV. This result is nonperturbative. Combining it with HPQCD's recent lattice QCD$+$QED determination of $\overline{m}_c(3\mathrm{GeV})$ gives a new value for the $b$-quark mass: $\overline{m}_b(3\mathrm{GeV}) = 4.513(26)$GeV. The $b$-mass corresponds to $\overline{m}_b(\overline{m}_b, n_f=5) = 4.202(21)$GeV. These results are the first based on simulations that include QED.
description: 8 pages, 4 figures
Incompatibility in Quantum Parameter Estimation
Creators: name: Belliardo, Federico
name: Giovannetti, Vittorio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper we introduce a measure of genuine quantum incompatibility in the estimation task of multiple parameters, that has a geometric character and is backed by a clear operational interpretation. This measure is then applied to some simple systems in order to track the effect of a local depolarizing noise on the incompatibility of the estimation task. A semidefinite program is described and used to numerically compute the figure of merit when the analytical tools are not sufficient, among these we include an upper bound computable from the symmetric logarithmic derivatives only. Finally we discuss how to obtain compatible models for a general unitary encoding on a finite dimensional probe.
description: We clarified the relation between LU and LAC measurements. 35 pages, 3 figures
Test Beam Study of SiPM-on-Tile Configurations
Creators: name: Belloni, A.
name: Chen, Y. M.
name: Dyshkant, A.
name: Edberg, T. K.
name: Eno, S.
name: Zutshi, V.
name: Freeman, J.
name: Krohn, M.
name: Lai, Y.
name: Lincoln, D.
name: Los, S.
name: Mans, J.
name: Reichenbach, G.
name: Uplegger, L.
name: Uzunyan, S. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Light yield and spatial uniformity for a large variety of configurations of scintillator tiles was studied. The light from each scintillator was collected by a Silicon Photomultiplier (SiPM) directly viewing the produced scintillation light (SiPM-on-tile technique). The varied parameters included tile transverse size, tile thickness, tile wrapping material, scintillator composition, and SiPM model. These studies were performed using 120 GeV protons at the Fermilab Test Beam Facility. External tracking allowed the position of each proton penetrating a tile to be measured. The results were compared to a GEANT4 simulation of each configuration of scinitillator, wrapping, and SiPM.
description: 19 pages, 15 figures, submitted to JINST
Dark Matter in the Type Ib Seesaw Model
Creators: name: Chianese, Marco
name: Fu, Bowen
name: King, Stephen F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider a minimal type Ib seesaw model where the effective neutrino mass operator involves two different Higgs doublets, and the two right-handed neutrinos form a heavy Dirac mass. We propose a minimal dark matter extension of this model, in which the Dirac heavy neutrino is coupled to a dark Dirac fermion and a dark complex scalar field, both charged under a discrete $Z_2$ symmetry, where the lighter of the two is a dark matter candidate. Focussing on the fermionic dark matter case, we explore the parameter space of the seesaw Yukawa couplings, the neutrino portal couplings and dark scalar to dark fermion mass ratio, where correct dark matter relic abundance can be produced by the freeze-in mechanism. By considering the mixing between between the standard model neutrinos and the heavy neutrino, we build a connection between the dark matter production and current laboratory experiments ranging from collider to lepton flavour violating experiments. For a GeV mass heavy neutrino, the parameters related to dark matter production are constrained by the experimental results directly and can be further tested by future experiments such as SHiP.
description: 28 pages, 4 figures, accepted by JHEP
Spin dynamics in a superconductor / ferromagnet proximity system
Creators: name: Bell, C.
name: Milikisyants, S.
name: Huber, M.
name: Aarts, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The ferromagnetic resonance of thin sputtered Ni80Fe20 films grown on Nb is measured. By varying the temperature and thickness of the Nb the role of the superconductivity on the whole ferromagnetic layer in these heterostructures is explored. The change in the spin transport properties below the superconducting transition of the Nb is found to manifest itself in the Ni80Fe20 layer by a sharpening in the resonance of the ferromagnet, or a decrease in the effective Gilbert damping co-efficient. This dynamic proximity effect is in contrast to low frequency studies in these systems, where the effect of the superconductor is confined to a small region in the ferromagnet. We interpret this in terms of the spin pumping model.
description: 4 pages, 4 figures, to be submitted for publication
Influence of ozone on shelf-life and quality of silvergrey rockfish (Sebastes brevispinis)
Creators: name: Prahst, Armin-Wilhelm
Publisher: name: University of British Columbia
Year: 2009

description: Ozone treatments of the chilled water surrounding fish during storage affects microbial and sensory properties of the stored product. In the first part of the study a better understanding of the effect of ozone on the microbial and sensory properties of freshly caught Silvergrey Rockfish (SebasLes brevispinis) was obtained. In the second part of the study, a method to quantify the inactivation of various typical fishspoilage microorganisms by ozone was developed. A survey examining the unloading process of fishing boats indicated that the unloading process did not contribute to an increase in microorganisms on the skin of tested fish samples. Sensory properties of the fish were not significantly improved by ozone treatment during an experiment simulating storage conditions on British Columbia fishing boats. The only significant difference (p<O.O5) due to ozonation was the reduction of the trimethylamine (TMA) level in the fish meat which, however, did not manifest in the sensory properties of the fish meat. Ozonation also did not cause any apparent colour differences in the fish meat. Although the number of skin microorganisms was initially reduced, after day 3 the microbial population on the ozone treated fish increased. Gill samples from ozone treated fish showed consistently higher, but not significantly different (except for one day), levels of microorganisms than the control samples. A model disinfection study was adequate to estimate the sensitivity of various typical fish spoilage microorganisms to ozone under strictly defined conditions. Of the bacterial strains tested Pseudomonas tragi was the most sensitive followed by Alteromonas putrefaci ens and Alteromonas punctata subsp. punctata. Staphylococcus aureus was the least sensitive to inactivation by ozone.
On Theorem Proving in Annotated Logics
Creators: name: Lu, Mi
Publisher: name: figshare
Year: 2021
Subjects: subject: 10399 Numerical and Computational Mathematics not elsewhere classified
subject: FOS: Mathematics

description: We are concerned with the theorem proving in annotated logics. By using annotated polynomials to express knowledge, we develop an inference rule superposition.A proof procedure is thus presented, and an improvement named M-strategy is mainly described. This proof procedure uses single overlaps instead of multiple overlaps, and above all, both the proof procedure and M-strategy are refutationallycomplete.
Superlight small bipolarons in the presence of strong Coulomb repulsion
Creators: name: Hague, J. P.
name: Kornilovitch, P. E.
name: Samson, J. H.
name: Alexandrov, A. S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study a lattice bipolaron on a staggered triangular ladder and triangular and hexagonal lattices with both long-range electron-phonon interaction and strong Coulomb repulsion using a novel continuous-time quantum Monte-Carlo (CTQMC) algorithm extended to the Coulomb-Frohlich model with two particles. The algorithm is preceded by an exact integration over phonon degrees of freedom, and as such is extremely efficient. The bipolaron effective mass and bipolaron radius are computed. Lattice bipolarons on such lattices have a novel crablike motion, and are small but very light in a wide range of parameters, which leads to a high Bose-Einstein condensation temperature. We discuss the relevance of our results with current experiments on cuprate high-temperature superconductors and propose a route to room temperature superconductivity.
description: 4 pages, 4 figures, submitted to Physical Review Letters
Near-Field Terahertz Nanoscopy of Coplanar Microwave Resonators
Creators: name: Guo, Xiao
name: He, Xin
name: Degnan, Zach
name: Donose, Bogdan C.
name: Bertling, Karl
name: Fedorov, Arkady
name: Rakić, Aleksandar D.
name: Jacobson, Peter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Superconducting quantum circuits are one of the leading quantum computing platforms. To advance superconducting quantum computing to a point of practical importance, it is critical to identify and address material imperfections that lead to decoherence. Here, we use terahertz Scanning Near-field Optical Microscopy (SNOM) to probe the local dielectric properties and carrier concentrations of wet-etched aluminum resonators on silicon, one of the most characteristic components of the superconducting quantum processors. Using a recently developed vector calibration technique, we extract the THz permittivity from spectroscopy in proximity to the microwave feedline. Fitting the extracted permittivity to the Drude model, we find that silicon in the etched channel has a carrier concentration greater than buffer oxide etched silicon and we explore post-processing methods to reduce the carrier concentrations. Our results show that near-field THz investigations can be applied to quantitatively evaluate and identify potential loss channels in quantum devices.
description: 14 pages, 3 figures. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Applied Physics Letters 119 (9), 091101 and may be found at https://aip.scitation.org/doi/full/10.1063/5.0061078
Positive-definite states of a Klein-Gordon type particle
Creators: name: Semenov, A. A.
name: Usenko, C. V.
name: Lev, B. I.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A possible way for the consistent probability interpretation of the Klein-Gordon equation is proposed. It is assumed that some states of a scalar charged particle cannot be physically realized. The rest of quantum states are proven to have positive-definite probability distributions.
description: 10 pages
Ψαλτική τέχνη και υμνωδία: Αυτονομημένη καλλιτεχνία ή Λειτουργική διακονία
Creators: name: Κουνατίδης, Γεώργιος Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Βυζαντινή Εκκλησιαστική Μουσική
Ψαλτική Τέχνη
Ύμνωδία
Byzantine Church Music
Psaltic Art
Hymnody

description: Η παρούσα εργασία επικεντρώνεται στην αναζήτηση των κριτηρίων που καθορίζουν τον τρόπο ψαλμωδίας που ανταποκρίνεται στο εκκλησιαστικό λειτουργικό ήθος της Ορθοδόξου Εκκλησίας. Η αναζήτηση αυτή έχει ως αφετηρία την απόσταση που παρατηρείται την συναίσθηση της απόστασης, που χωρίζει τη σημερινή κατάσταση του εκκλησιαστικού μέλους στους ναούς, από εκείνη που αποτυπώνεται στις διάφορες μαρτυρίες του περασμένου αιώνα αλλά και στις ηχογραφήσεις που διαθέτουμε από τις αρχές του 20ου αι.
description: The present study is focused on the criteria which determine the way of chanting considered as appropriate to the ecclesiastical and liturgical ethos of the Orthodox Church. The starting point for this research has been the need to explain the differentiation observed between the present form of the ecclesiastical melos in comparison with the one reflected either in various testimonies of the last century or in the original recordings coming from the beginning of the 20th century.
Asymptotics of input-constrained binary symmetric channel capacity
Creators: name: Han, Guangyue
name: Marcus, Brian
Publisher: name: arXiv
Year: 2008
Subjects: subject: Probability (math.PR)
subject: Information Theory (cs.IT)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 60K99, 94A15 (Primary) 60J10 (Secondary)

description: We study the classical problem of noisy constrained capacity in the case of the binary symmetric channel (BSC), namely, the capacity of a BSC whose inputs are sequences chosen from a constrained set. Motivated by a result of Ordentlich and Weissman [In Proceedings of IEEE Information Theory Workshop (2004) 117--122], we derive an asymptotic formula (when the noise parameter is small) for the entropy rate of a hidden Markov chain, observed when a Markov chain passes through a BSC. Using this result, we establish an asymptotic formula for the capacity of a BSC with input process supported on an irreducible finite type constraint, as the noise parameter tends to zero.
description: Published in at http://dx.doi.org/10.1214/08-AAP570 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Effect of Plasmonic Coupling in Different Assembly of Gold Nanorods Studied by FDTD
Creators: name: Sahu, Aditya K.
name: Raj, Satyabrata
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The influence of the orientation of gold nanorods in different assemblies has been investigated using the Finite Difference Time Domain (FDTD) simulation method. To understand the relative orientation, we vary the size and angle in dimer geometries. Significant effects of plasmon coupling emerged in longitudinal resonances having end-to-end configurations of gold nanorods. The effect of orientational plasmon coupling in dimers gives rise to both bonding and anti-bonding plasmon modes. Effects of various geometries like primary monomer, dimer, trimer, and tetramer structures have been explored and compared with their higher nanorod ensembles. The asymmetric spectral response in a 4 * 4 gold nanorods array indicates a Fano-like resonance. The variation of gap distance in ordered arrays allowed modulation of the Fano resonance mode. The plasmon modes' resonance wavelength and field enhancement have been tuned by varying the gap distance, angular orientation, size irregularity between the nanorods, and nanorod numbers in an array. The integrated nanostructures studied here are not only significant for fundamental research but also applications in plasmon-based devices.
description: 21 pages, 7 figures
TAKE ADVANTAGE OF THE COMPUTING POWER OF DNA COMPUTERS
Creators: name: Lu, Mi
Publisher: name: figshare
Year: 2021
Subjects: subject: 10399 Numerical and Computational Mathematics not elsewhere classified
subject: FOS: Mathematics

description: Ever since Adleman [1] solved the Hamilton Path problemusing a combinatorial molecular method, many other hard computational problems have been investigated with the proposed DNA computer [3] [25] [9] [12] [19] [22] [24] [27] [29] [30]. However, these computation methods all work toward one destination through a couple of stepsbased on the initial conditions. If there is a single change on these given conditions, all the procedures need to be gone through no matter how complicate these procedures are and how simple the change is. The new method we are proposing here in the paper will take care of this problem.Only a few extra steps are necessary to take when the initial condition has been changed. This will provide a lot of savings in terms of time and cost.
Full-Signature Real-Time Corrosion Detection of Underground Casing Pipes
Creators: name: Lu, Mi
Publisher: name: figshare
Year: 2021
Subjects: subject: 10399 Numerical and Computational Mathematics not elsewhere classified
subject: FOS: Mathematics

description: Corrosion monitoring and early detection of pits andwall thinning for casing pipes are considerably important to gas and petroleum industries since the frequently occurring corrosion at the internal or external parts of those steel casing pipes used in underground gas storage or oil fields causes production and environmental protection problems. In this paper, a new version of the direct current (dc) electromagnetic induction system is introduced in which a sensor system, based on the dc electromagneticinduction instrument, is coupled with an updated data acquisition system. Unlike the conventional dc induction instrument, the new system can achieve a full-signature logging response by providing all the measured flux leakage (FL) signals and eddy current (EC) signals to the computer logging system (CLS) on the surface. To transmit the information represented by large amounts of data acquired by downhole instruments to the CLS on the surface, a wavelet data compression technique has been incorporated. A VLSI integrated circuit (IC) which realizes the wavelet transform has been designed so that the real-time mode can be achieved during the logging operation. The circuit has been designed using CMOS n-well 2- m technology and has been fabricated by MOSIS.
Berkeley Field Methods: Uyghur
Creators: name: Bucholtz, Mary
name: Yusuf, Anwar
name: Baker, Collin
name: BrightCloud, Hal
name: Chung, Yoon-Suk
name: Hsu, Wen
name: Jacobs, Adam
name: Matisoff, James
name: Moore, Kevin
name: Orgun, Cemil Orhan
name: Salih, Hashim
name: Taub, Sarah
name: Wee, Lionel
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2024

description: Field notes, class papers, administrative documents, published articles.
Probing galaxy bias and intergalactic gas pressure with KiDS Galaxies-tSZ-CMB lensing cross-correlations
Creators: name: Yan, Ziang
name: van Waerbeke, Ludovic
name: Tröster, Tilman
name: Wright, Angus H.
name: Alonso, David
name: Asgari, Marika
name: Bilicki, Maciej
name: Erben, Thomas
name: Gu, Shiming
name: Heymans, Catherine
name: Hildebrandt, Hendrik
name: Hinshaw, Gary
name: Koukoufilippas, Nick
name: Kannawadi, Arun
name: Kuijken, Konrad
name: Mead, Alexander
name: Shan, HuanYuan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We constrain the redshift dependence of gas pressure bias $\left\langle b_{y} P_{\mathrm{e}}\right\rangle$ (bias-weighted average electron pressure), which characterises the thermodynamics of intergalactic gas, through a combination of cross-correlations between galaxy positions and the thermal Sunyaev-Zeldovich (tSZ) effect, as well as galaxy positions and the gravitational lensing of the cosmic microwave background (CMB). The galaxy sample is from the fourth data release of the Kilo-Degree Survey (KiDS). The tSZ $y$ map and the CMB lensing map are from the {\textit{Planck}} 2015 and 2018 data releases, respectively. The measurements are performed in five redshift bins with $z\lesssim1$. With these measurements, combining galaxy-tSZ and galaxy-CMB lensing cross-correlations allows us to break the degeneracy between galaxy bias and gas pressure bias, and hence constrain them simultaneously. In all redshift bins, the best-fit values of $\bpe$ are at a level of $\sim 0.3\, \mathrm{meV/cm^3}$ and increase slightly with redshift. The galaxy bias is consistent with unity in all the redshift bins. Our results are not sensitive to the non-linear details of the cross-correlation, which are smoothed out by the {\textit{Planck}} beam. Our measurements are in agreement with previous measurements as well as with theoretical predictions. We also show that our conclusions are not changed when CMB lensing is replaced by galaxy lensing, which shows the consistency of the two lensing signals despite their radically different redshift ranges. This study demonstrates the feasibility of using CMB lensing to calibrate the galaxy distribution such that the galaxy distribution can be used as a mass proxy without relying on the precise knowledge of the matter distribution.
description: 20 pages, 14 figures, 3 tables, accepted for publication on Astronomy & Astrophysics
Beyond Gross-Pitaevskii equation for 1D gas: quasiparticles and solitons
Creators: name: Kopyciński, Jakub
name: Łebek, Maciej
name: Marciniak, Maciej
name: Ołdziejewski, Rafał
name: Górecki, Wojciech
name: Pawłowski, Krzysztof
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Describing properties of a strongly interacting quantum many-body system poses a serious challenge both for theory and experiment. In this work, we study excitations of one-dimensional repulsive Bose gas for arbitrary interaction strength using a hydrodynamic approach. We use linearization to study particle (type-I) excitations and numerical minimization to study hole (type-II) excitations. We observe a good agreement between our approach and exact solutions of the Lieb-Liniger model for the particle modes and discrepancies for the hole modes. Therefore, the hydrodynamical equations find to be useful for long-wave structures like phonons and of a limited range of applicability for short-wave ones like narrow solitons. We discuss potential further applications of the method.
description: 27 pages, 11 figures. Submission to SciPost
Photon emission from inside the innermost stable circular orbit
Creators: name: Igata, Takahisa
name: Kohri, Kazunori
name: Ogasawara, Kota
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider a situation where a light source orbiting the innermost stable circular orbit (ISCO) of the Kerr black hole is gently falling from the marginally stable orbit due to an infinitesimal perturbation. Assuming that the light source emits photons isotropically, we show that the last radius at which more than 50\% of emitted photons can escape to infinity is approximately halfway between the ISCO radius and the event horizon radius. To evaluate them, we determine emitter orbits from the vicinity of the ISCO, which are uniquely specified for each black hole spin, and identify the conditions for a photon to escape from any point on the equatorial plane of the Kerr spacetime to infinity by specifying regions in the two-dimensional photon impact parameter space completely. We further show that the proper motion of the emitter affects the photon escape probability and blueshifts the energy of emitted photons.
description: 21 pages, 9 figures; v2: published version
A survey on Functional Encryption
Creators: name: Mascia, Carla
name: Sala, Massimiliano
name: Villa, Irene
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences
subject: A.1; E.3; G.2.3; I.1.4
subject: 11T71, 94A60, 14G50

description: Functional Encryption (FE) expands traditional public-key encryption in two different ways: it supports fine-grained access control and allows learning a function of the encrypted data. In this paper, we review all FE classes, describing their functionalities and main characteristics. In particular, we mention several schemes for each class, providing their security assumptions and comparing their properties. To our knowledge, this is the first survey that encompasses the entire FE family.
description: To appear in Advances in Mathematics of Communications, https://www.aimsciences.org/article/doi/10.3934/amc.2021049
Femtoscopic correlations in multiparticle production and beta-decay
Creators: name: Lednicky, Richard
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The basics of formalism of femtoscopic and spectroscopic correlations are given, the orthogonal character of these correlations is stressed. The similarity and difference of femtoscopic correlations in multiparticle production and beta-decay is discussed.
description: 8 pages, 3 figures, Workshop on Particle correlations and Femtoscopy (WPCF 2006), Sao Paulo, Brazil, September 9-11, 2006; to be published in Braz. J. Phys