cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Mean Estimate Distances for Galaxies with Multiple Estimates in NED-D
Creators: name: Steer, Ian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Numerous research topics rely on an improved cosmic distance scale (e.g., cosmology, gravitational waves), and the NASA/IPAC Extragalactic Database of Distances (NED-D) supports those efforts by tabulating multiple redshift-independent distances for 12,000 galaxies (e.g., Large Magellanic Cloud (LMC) zero-point). Six methods for securing a mean estimate distance (MED) from the data are presented (e.g., indicator and Decision Tree). All six MEDs yield surprisingly consistent distances for the cases examined, including for the key benchmark LMC and M106 galaxies. The results underscore the utility of the NED-D MEDs in bolstering the cosmic distance scale and facilitating the identification of systematic trends.
description: 18 pages, 5 figures, 6 tables, published in The Astronomical Journal, October 7, 2020
Ενεργειακό Δυναμικό Βιομάζας Φυτικών Υπολειμμάτων του Δήμου Πτολεμαΐδας:
Creators: name: Κατσάλης, Θεμιστοκλής Συμεών
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Βιομάζα
Πτολεμαΐδα
Υπολείμματα
Biomass
Ptolemaida
Residues

description: Σκοπός της διατριβής ήταν η μελέτη του ενεργειακού δυναμικού της βιομάζας των φυτικών υπολειμμάτων του δήμου Πτολεμαΐδας και η αξιοποίησή τους για παραγωγή ηλεκτρικής ενέργειας. Επιπλέον σκοπός της διατριβής ήταν να βρεθεί η ηλεκτρική ενέργεια που μπορεί να παραχθεί από την ποσότητα της βιομάζας που υπάρχει στο δήμο Πτολεμαΐδας και να συγκριθεί με το πετρέλαιο και τον λιγνίτη. Στη συνέχεια παρουσιάσαμε αναλυτικά τα χαρακτηριστικά των υπολειμμάτων των καλλιεργειών, καθώς και τους τύπους με τους οποίους υπολογίσαμε το θεωρητικό δυναμικό, το διαθέσιμο δυναμικό και το κόστος της βιομάζας. Ακόμη αναφερθήκαμε αναλυτικά στις καλλιέργειες από τις οποίες προήλθε η βιομάζα και στις αποδόσεις των καλλιεργειών. Ένα άλλο θέμα που θίξαμε ήταν οι τεχνολογίες ηλεκτροπαραγωγής που υπάρχουν για την αξιοποίηση της βιομάζας. Ασχοληθήκαμε επιπλέον με τη συλλογή, τη μεταφορά και την αποθήκευση της βιομάζας και τις μορφές βιομάζας που υπάρχουν. Τέλος, αναφερθήκαμε στη μονάδα παραγωγής ηλεκτρικής ενέργειας.
description: The aim of the present thesis was the study of the energy potential of biomass of plant residues of municipality of Ptolemais and exploited for electricity generation. Moreover, the aim of this study was to find the electricity can be produced from the quantity of biomass that exists in the municipality of Ptolemais and compared to oil and coal. Then we presented in detail the characteristics of crop residues, and the types with which we calculated the theoretical potential, available potential and cost of biomass. Even elaborated on crops from which the biomass and crop yields. Another issue touched upon was the generation technologies available for biomass. We dealt also with the collection, transport and storage of biomass and biomass types available. Finally, we discussed the power plant.
Model selection critieria in economic contexts
Creators: name: Fox, Kevin John
Publisher: name: University of British Columbia
Year: 2009

description: Model selection criteria are used in many contexts in economics. The issue of determining an appropriate criterion, or alternative method, for model selection is a topic of much interest for applied econometricians. These criteria are used when formal testing methods are difficult due to a large number of models being compared, or when a sequential modelling strategy is being used. In econometrics, we are familiar with the use of model selection criteria for determining the order of an ARMA process and the number of dependent variable lags in Augmented Dickey-Fuller equations. The latter application is examined as an interesting example of the sensitivity of results to the choice of criterion. An application of model selection criteria to spline fitting is also considered, introducing a new, flexible, modelling strategy for technical progress in a production economy and for returns to scale in a resource economics context. In this latter context we have a system of estimating equations. Two of the criteria which are compared are the Cross-Validation score (CV) and the Generalized Cross- Validation Criterion (GCV), which until now have only had single equation context expressions. Multiple equation expressions for these criteria are introduced, and are used in the two applications. Comparison of the models selected by the different criteria in each context reveals that results can differ greatly with the choice of criterion. In the unit root test application, the choice of criterion influences the number of times the false hypothesis is not rejected. In the production economy and resource applications, measures of technical progress and returns to scale differ greatly, as do own and cross price elasticities, depending on which criterion is used for selecting the appropriate spline structure. An overview of the literature on model selection is given, with new expressions and interpretations for some model selection criteria, and historical notes.
On the renormalization of the one-pion exchange potential and the consistency of Weinberg's power counting
Creators: name: Epelbaum, E.
name: Meißner, U. -G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Nogga, Timmermans and van Kolck recently argued that Weinberg's power counting in the few-nucleon sector is inconsistent and requires modifications. Their argument is based on the observed cutoff dependence of the nucleon-nucleon scattering amplitude calculated by solving the Lippmann-Schwinger equation with the regularized one-pion exchange potential and the cutoff Lambda varied in the range Lambda = 2...20 fm^(-1). In this paper we discuss the role the cutoff plays in the application of chiral effective field theory to the two-nucleon system and study carefully the cutoff-dependence of phase shifts and observables based on the one-pion exchange potential. We show that (i) there is no need to use the momentum-space cutoff larger than Lambda ~ 3 fm^(-1); (ii) the neutron-proton low-energy data show no evidence for an inconsistency of Weinberg's power counting if one uses Lambda ~ 3 fm^{-1}.
description: 15 pages, 12 figures, updated and published version
Το σύστημα εισαγωγής στην Τριτοβάθμια Εκπαίδευση από το 1964 έως το 1997 : ερμηνευτική και κριτική προσέγγιση:
Creators: name: Τότσκα, Βαΐα Πασχάλη
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Εκπαιδευτική μεταρρύθμιση
Σύστημα εισαγωγής
Ανώτατη Εκπαίδευση
Educational reform
Intake system
Higher Education

description: Σκοπός της μεταπτυχιακής εργασίας ήταν η διερεύνηση του συστήματος εισαγωγής στην Τριτοβάθμια Εκπαίδευση όπως ορίστηκε με τις εκπαιδευτικές μεταρρυθμίσεις από το 1964 έως και το 1997. Αρχικά παρουσιάσαμε την ιστορική διάσταση του συστήματος εισαγωγής στην Ανώτατη Εκπαίδευση. Στη συνέχεια προβάλλαμε αναλυτικά τα ιδιαίτερα χαρακτηριστικά των εκπαιδευτικών μεταρρυθμίσεων όσον αφορά την εισαγωγή των υποψηφίων στην Τριτοβάθμια Εκπαίδευση. Ακόμη εξετάσαμε στις εκάστοτε μεταρρυθμίσεις τις παραμέτρους που επηρεάζουν τις αλλαγές στο σύστημα εισαγωγής, τα αποτελέσματα στη σύνδεση της Δευτεροβάθμιας με την Τριτοβάθμια Εκπαίδευση, τη νομιμοποίηση των ανισωτικών λειτουργιών του εκπαιδευτικού συστήματος και την καθιέρωση ενός τεχνοκρατικού συστήματος. Προβήκαμε σε ερμηνευτική και κριτική προσέγγιση των συστημάτων εισαγωγής και οδηγηθήκαμε σε συμπεράσματα και σε ανάλογες προτάσεις.
description: The aim of the thesis was to investigate the intake system in higher education as determined by the educational reforms between 1964 and 1997. Originally presented the historical dimension of the intake system in Higher Education. Then view in detail the characteristics of education reforms for the introduction of candidates to higher education. Even looked at each reform parameters that influence changes in the intake system, the results in association with the Higher Secondary Education, Money anisotikon the education system and introducing a technocratic system. Made interpretive and critical approach to the intake systems and arrived at similar conclusions and recommendations.
Electronic correlations effect on nontrivial topological fermions in CoSi
Creators: name: Dutta, Paromita
name: Pandey, Sudhir K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The present study has been carried out to understand the effect of electronic correlations on the recently found fermions in CoSi. For which the spectral functions of bulk and (001) surface of CoSi have been investigated by using DFT+DMFT advanced methodology at T = 100 K with and without inclusion of spin-orbit coupling (SOC). All the newly found fermions are observed at $Γ$ and $R$ points similar to other theoretical and experimental reports. Our DFT+DMFT calculations for the bulk states have shown one extra hole pocket at $M$ point. Both coherent and incoherent features have been observed in the spectra of bulk CoSi. This indicates the presence of quasiparticle-quasiparticle (QP-QP) interactions which is eventually affecting the lifetime ($τ$) of exotic fermionic QPs. For instance, the calculated $τ$ for QPs at $ω\sim $ -30 and -186 mev are found to be $\sim 10^{-9}$ s and $\sim 10^{-12}$ s, respectively when SOC is not considered. However, $G_0W_0$ corrections have shown $τ$ for spin-1 fermionic QP at $Γ$ to be infinite while for double Weyl fermionic QP at $R$ point to be $\sim 10^{-12}$ s. Their effective masses ($m^*$) have also been calculated as $\sim$ 1.60 and 1.64 at $Γ$ and $R$ points, respectively. Furthermore, the spectral functions at T = 100 K of (001) surface have also shown both coherent and incoherent features. Consequently, at $ω$ = 0 for surface states $τ$ has been calculated of the order $\sim 10^{-8}$s for both without SOC and with SOC inclusions.
Dancing with Light: A Deep Dive into Light Painting
Creators: name: Oliveira, Jorge
Publisher: name: Empowerverse Media & Communications Agency
Year: 2024
Subjects: light painting photography
long exposure
abstract expressionism

description: Welcome to the realm where darkness becomes your canvas and light, your brush. Today we delve into the enthralling world of Light Painting, a subgenre where long exposures capture the dance of illuminated tools, transforming fleeting gestures into ethereal landscapes and abstract marvels. This article is your passport to a world beyond the ordinary, where technical mastery meets artistic vision, and every stroke of light tells a story.
Το έγκλημα της παραμέλησης εποπτείας ανηλίκου (άρθρο 360 ΠΚ):
Creators: name: Λαμπάκης, Χρήστος Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Ανήλικος
Παραμέληση
Εποπτεία
Juvenile
Neglecting
Supervision

description: Η παρούσα εργασία επιχειρεί να προσεγγίσει ερμηνευτικά το έγκλημα της παραμέλησης εποπτείας ανηλίκου, όπως αυτό τυποποιείται στο άρθρο 360 ΠΚ. Αρχικά επιδιώκεται ο προσδιορισμός του προστατευόμενου από την εν λόγω διάταξη εννόμου αγαθού και εξετάζονται οι συνέπειες που αυτό επιφέρει σε ολόκληρο το έγκλημα (όπως ο χαρακτηρισμός του στοιχείου της τέλεσης αξιόποινης πράξης ή της επίδοσης στην πορνεία από τον ανήλικο ως στοιχείο της αντικειμενικής υπόστασης ή εξωτερικό όρο του αξιοποίνου). Επίσης εξετάζονται και άλλα κεντρικά ζητήματα όπως το εύρος των προσώπων που μπορεί να γίνουν δράστες του εγκλήματος, οι λόγοι άρσης του αδίκου κ.α. Τέλος, γίνεται προσπάθεια προσέγγισης δυσχερών δογματικών ζητημάτων που ανακύπτουν στην προκειμένη περίπτωση όπως η δυνατότητα απόπειρας σε έγκλημα γνήσιας παράλειψης.
description: In this paper the author tries to investigate the crime of neglecting the duty to supervise the juveniles, as it is formed in the art.360 of the penal code. At first, he seeks to identify the legal good, which this article of the penal code protects and also examines the consequences that result in the entire crime (such as the characterization of the commission of an offence or juvenile prostitution as an external condition of the illegal character of the act or not). Furthermore, he examines other key issues, such as the range of persons who are likely to become perpetrators of this crime etc. Finally, the author attempts to interpret difficult to answer dogmatic questions arising in this case such as the ability to commit an attempt in a crime by genuine omission.
QED and relativistic corrections in superheavy elements
Creators: name: Indelicato, Paul
name: Santos, J. P.
name: Boucard, S.
name: Desclaux, J. P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: In this paper we review the different relativistic and QED contributions to energies, ionic radii, transition probabilities and Landé $g$-factors in super-heavy elements, with the help of the MultiConfiguration Dirac-Fock method (MCDF). The effects of taking into account the Breit interaction to all orders by including it in the self-consistent field process are demonstrated. State of the art radiative corrections are included in the calculation and discussed. We also study the non-relativistic limit of MCDF calculation and find that the non-relativistic offset can be unexpectedly large.
description: V3, May 31st, 2007
In Vitro Επιφανειακή Τροποποίηση των πολυυδροξυαλκανοϊκών οξέων με χρήση βιομορίων
Creators: name: Ανδριώτης, Ελευθέριος Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2010
Subjects: Πολυυδροξυαληανοϊκα
Επιφανειακή τροποποίηση
PHB αποπολυμεράση
Polyhydroxy butyrate(PHB)
Surface modofication-functionalization
PHB depolymerase

description: Σκοπός της παρούσας διπλωματικής εργασίας ήταν η in vitro επιφανειακή τροποποίηση των πολυυδροξυαλκανοϊκών οξέων με τη χρήση βιομορίων. Η επιφανειακή τροποποίηση πραγματοποιήθηκε με δύο τρόπους. Αρχικά, έγινε η επιφανειακή τροποποίηση υμενίων από PHB, με τη χρήση όζοντος. Τα κατεργασμένα υμένια αντέδρασαν με ακρυλικό οξύ και στη συνέχεια έγινε καθήλωση πρωτεϊνών στην επιφάνεια τους. Ο δεύτερος τρόπος επιφανειακής τροποποίησης των πολυυδροξυαλκανοϊκών οξέων, πραγματοποιήθηκε με την χρήση της PHB αποπολυμεράσης. Στην συγκεκριμένη διαδικασία έγινε χρήση της αγχιστείας της PHB αποπολυμεράσης με το κρυσταλλικό PHB. Η PHB αποπολυμεράση δεσμεύεται πάνω στην επιφάνεια του πολυμερούς και στη συνέχεια γίνεται η καθήλωση των πρωτεϊνών με τη μέθοδο της χημικής σταυροσύνδεσης πρωτεϊνών, παρουσία γλουταραλδεΰδης. Η πρωτεΐνη που χρησιμοποιήθηκε στα συγκεκριμένα πειράματα ήταν η όξινη φωσφατάση. Η συγκεκριμένη μέθοδος μπορεί να εφαρμοστεί για την καθήλωση οποιουδήποτε ενζύμου ή συνδυασμού ενζύμων πάνω σε επιφάνεια από PHB και επαναχρησιμοποίηση των ενζύμων. Επίσης, τα αποτελέσματα έδειξαν ότι το καθηλωμένο ένζυμο μπορεί να διατηρηθεί στη συντήρηση (4ο C) χωρίς επιπλέον απώλεια δραστικότητας για πάνω από 30 ημέρες.
description: Polyhydroxyalkanoates (PHA) are a class of polyesters that can be produced by a variety of microorganisms. The first PHA to be discovered and the most studied is polyhydroxybutyrate (PHB). A remarkable characteristic of PHB is its biodegradability in various environments. Even though PHAs are hydrophobic and water-insoluble, they can be degraded by PHA depolymerases secreted by many microorganisms. There are potential applications for PHAs within chemical, medical and pharmaceutical industries, primarily due to their biodegradability. The surface properties should be modified in most of the applications. This study demonstrated that polyhydroxybutyrate (PHB) depolymerase can be employed as molecular tool to covalently immobilize acid phosphatase to PHB granule surface. T. thermophilus extracellular PHB depolymerase was purified and cross-linked to acid phosphatase in the presence of glutaraldehyde. The cross-linked enzymes were then selectively and functionally immobilized to PHB granule surface. The surface-modified PHB granules were tested for acid phosphatase activity. The immobilized enzyme was active at medium temperature with no additional loss of activity during preservation. The immobilized acid phosphatase was reused for the determination of the enzyme stability during continuous assays. The reusability of immobilized acid phosphatase was also studied with promising results, since the enzyme was active through all operational cycles used.
Bond-bond correlations, gap relations and thermodynamics of spin-$1/2$ chains with spin-Peierls transitions and bond-order-wave phases
Creators: name: Saha, Sudip Kumar
name: Kumar, Manoranjan
name: Soos, Zoltán G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The spin-$1/2$ chain with antiferromagnetic exchange $J_1$ and $J_2 = αJ_1$ between first and second neighbors, respectively, has both gapless and gapped ($Δ(α) > 0$) quantum phases at frustration $0 \le α\le 3/4$. The ground state instability of regular ($δ= 0$) chains to dimerization ($δ> 0$) drives a spin-Peierls transition at $T_{SP}(α)$ that varies with $α$ in these strongly correlated systems. The thermodynamic limit of correlated states is obtained by exact treatment of short chains followed by density matrix renormalization calculations of progressively longer chains. The doubly degenerate ground states of the gapped regular phase are bond order waves (BOWs) with long-range bond-bond correlations and electronic dimerization $δ_e(α)$. The $T$ dependence of $δ_e(T,α)$ is found using four-spin correlation functions and contrasted to structural dimerization $δ(T,α)$ at $T \le T_{SP}(α)$. The relation between $T_{SP}(α)$ and the $T = 0$ gap $Δ(δ(0),α)$ varies with frustration in both gapless and gapped phases. The magnetic susceptibility $χ(T,α)$ at $T > T_{SP}$ can be used to identify physical realizations of spin-Peierls systems. The $α= 1/2$ chain illustrates the characteristic BOW features of a regular chain with a large singlet-triplet gap and electronic dimerization.
description: 9 pages, 8 figures
Deformation Finiteness for Real Hyperkahler Manifolds
Creators: name: Degtyarev, Alex
name: Itenberg, Ilia
name: Kharlamov, Viatcheslav
Publisher: name: arXiv
Year: 2006
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 53C26, 14P25, 14J32, 32Q20

description: We show that the number of equivariant deformation classes of real structures in a given deformation class of compact hyperkahler manifolds is finite.
description: 6 pages
การจัดโปรแกรมเส้นทางการท่องเที่ยวจังหวัดนครศรีธรรมราช โดยใช้วิธีการค้นหาเพื่อนบ้านใกล้สุด
Creators: name: ศิวพร แน่นหนา
Publisher: name: คณะเทคโนโลยีอุตสาหกรรม มหาวิทยาลัยราชภัฏสุรินทร์
Year: 2023
Subjects: โปรแกรมเส้นทางการท่องเที่ยว
การจัดเส้นทาง
วิธีการค้นหาเพื่อนบ้านใกล้สุด

description: วารสารวิชาการเทคโนโลยีอุตสาหกรรม มหาวิทยาลัยราชภัฏสุรินทร์, 8, 2, 1-12
การประเมินคุณสมบัติคอนกรีตผสมวัสดุเหลือใช้และความคุ้มค่าสำหรับการออกแบบเฟอร์นิเจอร์สนาม
Creators: name: แดน อุตรพงษ์
Publisher: name: คณะเทคโนโลยีอุตสาหกรรม มหาวิทยาลัยราชภัฏสุรินทร์
Year: 2023
Subjects: เฟอร์นิเจอร์สนาม
คอนกรีตผสม
วัสดุเหลือใช้

description: วารสารวิชาการเทคโนโลยีอุตสาหกรรม มหาวิทยาลัยราชภัฏสุรินทร์, 8, 2, 13-23
การพัฒนาเกมสองมิติไหว้พระเก้าวัดดีอุบลราชธานีศรีวะนาไล
Creators: name: ยุทธศักดิ์ ทองแสน
Publisher: name: คณะเทคโนโลยีอุตสาหกรรม มหาวิทยาลัยราชภัฏสุรินทร์
Year: 2023
Subjects: ภาพประกอบ
เกมสองมิติ
คอมพิวเตอร์กราฟิก

description: วารสารวิชาการเทคโนโลยีอุตสาหกรรม มหาวิทยาลัยราชภัฏสุรินทร์, 8, 2, 24-38
การพัฒนาเครื่องบันทึกเพื่อตรวจติดตามอุณหภูมิและความชื้นสัมพัทธ์ในโรงเลี้ยงไหมพันธุ์พื้นบ้าน
Creators: name: ทรงศักดิ์ มีสิทธิ์
Publisher: name: คณะเทคโนโลยีอุตสาหกรรม มหาวิทยาลัยราชภัฏสุรินทร์
Year: 2023
Subjects: การตรวจติดตามอุณหภูมิ
ความชื้นสัมพัทธ์
อีเอสพี8266

description: วารสารวิชาการเทคโนโลยีอุตสาหกรรม มหาวิทยาลัยราชภัฏสุรินทร์, 8, 2, 39-48
The intuitionistic fragment of computability logic at the propositional level
Creators: name: Japaridze, Giorgi
Publisher: name: arXiv
Year: 2006
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Artificial Intelligence (cs.AI)
subject: Logic (math.LO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: F.1.1; F.1.2

description: This paper presents a soundness and completeness proof for propositional intuitionistic calculus with respect to the semantics of computability logic. The latter interprets formulas as interactive computational problems, formalized as games between a machine and its environment. Intuitionistic implication is understood as algorithmic reduction in the weakest possible -- and hence most natural -- sense, disjunction and conjunction as deterministic-choice combinations of problems (disjunction = machine's choice, conjunction = environment's choice), and "absurd" as a computational problem of universal strength. See http://www.cis.upenn.edu/~giorgi/cl.html for a comprehensive online source on computability logic.
Optimal quantum control of Bose Einstein condensates in magnetic microtraps
Creators: name: Hohenester, Ulrich
name: Rekdal, Per Kristian
name: Borzi, Alfio
name: Schmiedmayer, Joerg
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Transport of Bose-Einstein condensates in magnetic microtraps, controllable by external parameters such as wire currents or radio-frequency fields, is studied within the framework of optimal control theory (OCT). We derive from the Gross-Pitaevskii equation the optimality system for the OCT fields that allow to efficiently channel the condensate between given initial and desired states. For a variety of magnetic confinement potentials we study transport and wavefunction splitting of the condensate, and demonstrate that OCT allows to drastically outperfrom more simple schemes for the time variation of the microtrap control parameters.
description: 11 pages, 7 figures
Multi Scale Temporal Graph Networks For Skeleton-based Action Recognition
Creators: name: Li, Tingwei
name: Zhang, Ruiwen
name: Li, Qing
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Graph convolutional networks (GCNs) can effectively capture the features of related nodes and improve the performance of the model. More attention is paid to employing GCN in Skeleton-Based action recognition. But existing methods based on GCNs have two problems. First, the consistency of temporal and spatial features is ignored for extracting features node by node and frame by frame. To obtain spatiotemporal features simultaneously, we design a generic representation of skeleton sequences for action recognition and propose a novel model called Temporal Graph Networks (TGN). Secondly, the adjacency matrix of the graph describing the relation of joints is mostly dependent on the physical connection between joints. To appropriately describe the relations between joints in the skeleton graph, we propose a multi-scale graph strategy, adopting a full-scale graph, part-scale graph, and core-scale graph to capture the local features of each joint and the contour features of important joints. Experiments were carried out on two large datasets and results show that TGN with our graph strategy outperforms state-of-the-art methods.
The Eigenvalues of Random Matrices
Creators: name: Meckes, Elizabeth
Publisher: name: arXiv
Year: 2021
Subjects: subject: Probability (math.PR)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: This is a brief survey of classical and recent results about the typical behavior of eigenvalues of large random matrices, written for mathematicians and others who study and use matrices but may not be accustomed to thinking about randomness.
Connections with skew-symmetric Ricci tensor on surfaces
Creators: name: Derdzinski, Andrzej
Publisher: name: arXiv
Year: 2008
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53B05 (Primary), 53C05, 53B30 (Secondary)

description: Some known results on torsionfree connections with skew-symmetric Ricci tensor on surfaces are extended to connections with torsion, and Wong's canonical coordinate form of such connections is simplified.
description: 22 pages
Αξιολόγηση των χρονόμετρων αντίστροφης μέτρησης(countdown signal timers)για πεζούς σε σηματοδοτούμενους κόμβους. Η περίπτωση του κόμβου Αιγαίου-Ανδριανουπόλεως στην Καλαμαριά:
Creators: name: Λαμπριανίδου, Πολυξένη Χαραλάμπους
Publisher: name: Aristotle University of Thessaloniki
Year: 2010
Subjects: Αξιολόγηση
Χρονόμετρο
Πεζός
Evaluation
Countdown
Pedestrian

description: Στην παρούσα Μεταπτυχιακή Διπλωματική Εργασία παρουσιάζεται η αξιολόγηση της αποτελεσματικότητας των χρονομέτρων αντίστροφης μέτρησης για τους πεζούς σε σηματοδοτούμενους κόμβους. Αυτή βασίζεται στην αξιολόγηση της συμπεριφοράς των πεζών στην περίπτωση του κόμβου Αιγαίου – Ανδριανουπόλεως του Δήμου Καλαμαριάς στη Θεσσαλονίκη. Για την αξιολόγηση της συμπεριφοράς των πεζών πραγματοποιήθηκαν μετρήσεις καθώς και συνεντεύξεις των πεζών. Από την στατιστική ανάλυση των δεδομένων προκύπτει ότι τα χρονόμετρα αντίστροφης μέτρησης είναι σε θέση να παρέχουν στους πεζούς πολύτιμες πληροφορίες που ενισχύουν το αίσθημα ασφάλειας τους σε ότι αφορά στη διάσχιση της διάβασης. Οι συνεντεύξεις των πεζών αποκαλύπτουν ότι οι περισσότεροι εξ΄ αυτών σωστά ερμηνεύουν τη σημασία του σήματος με το πράσινο ανθρωπάκι και το χρονόμετρο. Τέλος κρίνεται ότι είναι επιθυμητή η εγκατάσταση χρονομέτρων αντίστροφης μέτρησης για πεζούς και σε άλλες αντίστοιχες διαβάσεις.
description: An evaluation of the effectiveness of pedestrian countdown signals at signalised pedestrian crossings is presented in this Thesis. This is based on an evaluation of the behavior of pedestrians and motorists in the case of the intersection Aigaiou – Andrianoupoleos in the city of Thessaloniki. A series of surveys and pedestrian interviews were used to evaluate the behavior of pedestrians and motorists. Data statistical analyses indicated that the countdown signals are able to provide pedestrians with valuable information that enhances the safety level as far as crossing of the intersection is considered. The pedestrian interviews revealed that most of them correctly interpreted the meaning of the “green man” sign and the countdown clock. Finally, it is considered desirable to install pedestrian countdown signals in others signalized pedestrian crossings as well.
Γιάννης Βαρβέρης: Προβληματισμοί ποιητικής:
Creators: name: Καταβούτα, Ουρανία Χαριλαου
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Γιάννης Βαρβέρης
Ποιητική
Θάνατος
Yiannis Varveris
Poetics
Death

description: Η παρούσα μεταπτυχιακή εργασία πραγματεύεται το ποιητικό έργο του Γιάννη Βαρβέρη, ενός σύγχρονου ποιητή που ανήκει στη γενιά του ’70. Συγκεκριμένα, αναλύουμε ορισμένους προβληματισμούς της ποιητικής του. Αρχικά, μελετάμε θέματα περιεχομένου, όπως είναι η πολυπρόσωπη παρουσία του θανάτου, οι μεταμορφώσεις του έρωτα, η κυριαρχία του αστικού τοπίου και η ανεστραμμένη μορφή του Φιλέα Φογκ. Στη συνέχεια, όσον αφορά τα θέματα μορφής, εξετάζουμε τη ρυθμικότητα που χαρακτηρίζει την ποίηση του Βαρβέρη και την «υπέρβαση του ρεαλισμού» μέσα από τη χρήση της μεταφοράς και της μετωνυμίας. Επίσης, βλέπουμε τις κύριες ποιητικές του διασταυρώσεις με τον Κ. Π. Καβάφη, τον Μίλτο Σαχτούρη και τον Κώστα Καρυωτάκη. Τελικά, αυτό που γίνεται κατανοητό είναι ότι ο θάνατος μετουσιώνεται σε κύριο προβληματισμό της ποιητικής του και αποτελεί τον βασικό άξονα γύρω από τον οποίο περιστρέφονται όλα τα θέματα του Γιάννη Βαρβέρη.
description: The present study deals with poetry of Yannis Varveris, a modern Greek poet of the generation of the ’70s. Specifically, I examine certain questions of his poetics. First, I study topics related to content such as the multiple presence of death, the metamorphosis of love, the dominance of urban landscape and the inverted image of Phileas Fog. Later on, I analyse questions of form such as the rhythmicity of Varveris’ poetry and the ‘excess of realism’ through the use of metaphor and metonymy. Furthermore, I examine the poetic convergences with C.-P. Cavafy, Miltos Sachtouris and Kostas Karyotakis. Finally, I discover that death becomes the main problem of his poetry and that all the topics of Yannis Varveris revolve around the central axis of death.
การพัฒนาเครื่องแยกของเหลวออกจากมูลโค
Creators: name: อธิรัช ลี้ตระกูล
Publisher: name: คณะเทคโนโลยีอุตสาหกรรม มหาวิทยาลัยราชภัฏสุรินทร์
Year: 2023
Subjects: การพัฒนา
เครื่องแยกของเหลว
มูลโค

description: วารสารวิชาการเทคโนโลยีอุตสาหกรรม มหาวิทยาลัยราชภัฏสุรินทร์, 8, 2, 49-62
การพัฒนาไม้ระดับที่ต่อความยาวด้วยเศษวัสดุ
Creators: name: สมภพ เพ็ชรดี
Publisher: name: คณะเทคโนโลยีอุตสาหกรรม มหาวิทยาลัยราชภัฏสุรินทร์
Year: 2023
Subjects: การระดับ
ไม้ระดับ
ความคลาดเคลื่อนเข้าบรรจบ

description: วารสารวิชาการเทคโนโลยีอุตสาหกรรม มหาวิทยาลัยราชภัฏสุรินทร์, 8, 2, 63-74
Black hole formation from collisions of cosmic fundamental strings
Creators: name: Iengo, R.
name: Russo, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We develop the general formalism for joining, splitting and interconnection of closed and open strings. As an application, we study examples of fundamental cosmic string collisions leading to gravitational collapse. We find that the interconnection of two strings of equal and opposite maximal angular momentum and arbitrarily large mass generically leads to the formation of black holes, provided their relative velocity is small enough.
description: 22 pages, 4 figures. Added comments
Quantum control of polaron states in semiconductor quantum dots
Creators: name: Hohenester, Ulrich
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study phonon-assisted dephasing in optically excited semiconductor quantum dots within the frameworks of the independent Boson model and optimal control. Using a realistic description for the quantum dot states and the phonon coupling, we demonstrate that such dephasing has a drastic impact on the coherent optical response. We employ optimal control theory to search for control strategies that allow to fight decoherence, and show that appropriate tailoring of laser pulses allows a complete control of the optical excitation despite the phonon dephasing.
description: 20 pages, 5 figures
Field test of an active flap system on a multi mw wind turbine
Creators: name: Gomez Gonzalez, Alejandro
name: Enevoldsen, Peder Bay
name: Barlas, Athanasios
name: Madsen, Helge Aagaard
Publisher: name: Zenodo
Year: 2019
Subjects: wind energy
aerodynamics
active flow control
active flaps
field test
rotor blades

description: Presentation regarding active flap field test on a full scale multi megawatt wind turbine
Cognitive and behavioural responses to illness information in health anxiety
Creators: name: Hadjistavropoulos, Heather Deanne
Publisher: name: University of British Columbia
Year: 2009

description: A cognitive-behavioural theory (CBT) has been put forth to explain hypochondriasis and less extreme forms of health anxiety (Warwick & Salkovskis, 1990). The extent to which less extreme forms of health anxiety are relevant for understanding illness behaviour remains unclear, however. Further, the independence of health anxiety from a more general construct of negative affectivity, as well as response styles is not known. The CBT of health anxiety predicts that in response to illness information health anxious individuals will show a characteristic cognitive (e.g., attend to and misinterpret information) and behavioural (e.g., avoidance and reassurance seeking) response. Although the predictions are supported by clinical observations, rigorous and systematic contrasts of health anxious and non-health anxious individuals to the same objective health related information have not yet been carried out. Further, there are a number of additional issues that need to be clarified with respect to the theory, including: (a) Are there additional cognitive and behavioural responses involved in health anxiety not predicted by the CBT?; (b) Are health anxious individuals deficient in there use of certain adaptive responses to illness information?; and (c) Are the cognitive and behavioural responses shown by health anxious individuals moderated under certain circumstances? In the present study, students scoring either within normal or nonclinically high ranges on a measure of health anxiety underwent a physiological test ostensibly examining risk for medical complications and were randomly assigned to receive positive, negative, or ambiguous test results. They then underwent a cold pressor task ostensibly to examine physiological activity and were asked questions tapping their responses to the diagnostic information and painful procedure. They were also judged for facial expressiveness. Unmistakable support was found for a dysfunctional cognitive (e.g., negative interpretational focus) and behavioural (e.g., reassurance seeking) response style among health anxious individuals. Little support was found for either cognitive or behavioural avoidance in health anxiety. Not anticipated by the CBT, as time went on health anxious individuals became more expressive of their pain; this may have important implications, since increased expressiveness could result in an increase in the felt emotional experience. Adding to the CBT, evidence was found to suggest that health anxious individuals may have a deficit or be deficient in their use of a positive concrete somatic monitoring strategy. Finally, the results suggested that there are statistically and clinically significant differences among nonclinically health anxious individuals and normals that can not be accounted for by differences in negative affectivity or response styles.
Κυτταροτοξικότητα επιφανείων PET/SiOx
Creators: name: Χανέλλη, Φατίον Αγκίμ Chanelli Fation Akim
Publisher: name: Aristotle University of Thessaloniki
Year: 2010
Subjects: Κυτταροτοξικότητα
Λεπτά υμένια
Βιοϋλικά
Cytotoxicity
Thin films Biomaterials

description: Το PET ως βιοσυμβατό υλικό ( βιοϋλικό) βρίσκει εφαρμογές στην ιατρική την κατασκευή τεχνητών αγγείων. Εντούτοις, η επίστρωση του υλικού αυτού με πυρίτιο εθεωρείτο απαγορευτική για ιατρικές εφαρμογές λόγω της τοξικότητάς τους.Αντίθετα ,σε μελέτες έχει αναφερθεί ότι η χρήση υλικών με επικάλυψη SiOx στην οδοντιατρική επάγει την ανάπτυξη και την προσκόλληση ινοβλαστών στην επιφάνεια τους .Προκειμένου να διευκρινιστεί εάν και πότε υλικά με επίστρωση πυριτίου είναι κυτταροτοξικά χρησιμοποιήθηκαν λεπτά υμένια ΡΕΤ /SiOx (x=1.6) τα οποία ελέγχθηκαν ως προς τις βιο-ιδιότητές τους σε κυτταρικές καλλιέργειες. Χρησιμοποιήθηκαν τόσο κύτταρα φυσιολογικά ( ανθρώπινοι ινοβλάστες δέρματος) όσο και καρκινικά (τραχήλου μήτρας). Ο έλεγχος της βιωσιμότητας των κυττάρων έγινε με την ποσοτικοποίηση των ενεργών μιτοχονδρίων στα μελετούμενα κύτταρα(MTT assay) και με την μελέτη της μορφολογίας των κυττάρων με Οπτική Μικροσκοπία και με Ηλεκτρονική μικροσκοπία σάρωσης (SEM). Το συμπέρασμα από την μελέτη μιας σειράς δειγμάτων ήταν ότι τα συγκεκριμένα λεπτά υμένια PET/SiOx δεν απελευθερώνουν συστατικά πού να παρεμποδίζουν τον πολλαπλασιασμό των κυττάρων , που συν-επωάζονται μαζί τους, αλλά ταυτόχρονα δεν επάγουν την κυτταρική προσκόλληση στην επιφάνεια τους.
description: PET (Polyethylene terepthalate) is a biocompatible material. Although silicon oxide (SiOx) is not proper for using it in biomedical science due to toxicity. According to a recently published paper [29] the use of SiOx coating on materials that were not suitable for cell adhesion and proliferation, induced the fibroblasts adhesion on that materiarls. In order to clearify if SiOx coating is cytotoxic or not, we studied PET/SiOx(x=1.6) thin films that were incubated with human skin fibroblasts. The toxicity of the material and the morphological changes on the cells structures were examined with MTT assay, optical microscopy and with Scanning Electron Microscopy(SEM). The conclusion from the experiments was that the SiOx did not inhibit the fibroblasts proliferation around it, but the surface was not suitable for cell adhesion.
Determination of Heating Time and Heat Flux of Particle Board by Multiple Regression Models to Apply for Fire Scene Investigation
Creators: name: Tanawin Tattananan
name: Ratchapak Chittaree
name: Tosporn Boonyarith
Publisher: name: วารสารวิจัย มสด สาขาวิทยาศาสตร์และเทคโนโลยี
Year: 2556
Subjects: ฟลักซ์ความร้อน,ระยะเวลาการเผาไหม้,พาร์ติเคิลบอร์ด,สถานที่เกิดเหตุเพลิงไหม้

description: 2, 6, วารสารวิจัย มสด สาขาวิทยาศาสตร์และเทคโนโลยี
Stature Estimation and Sex Determination: An Evaluation of the Reliability of Phalange : Bumrungrad International Hospital staff case
Creators: name: Keowali Phumkeson
Publisher: name: วารสารวิจัย มสด สาขาวิทยาศาสตร์และเทคโนโลยี
Year: 2556
Subjects: กระดูกนิ้วมือ,ข้อต่อข้อแรกของกระดูกนิ้วมือ

description: 2, 6, วารสารวิจัย มสด สาขาวิทยาศาสตร์และเทคโนโลยี
Free fall in KvN mechanics and Einstein's principle of equivalence
Creators: name: Sen, Abhijit
name: Dhasmana, Shailesh
name: Silagadze, Zurab K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The implementation of Einstein's principle of equivalence in Koopman-von Neumann (KvN) mechanics is discussed. The implementation is very similar to the implementation of this principle in quantum mechanics. This is not surprising, because KvN mechanics provides a Hilbert space formulation of classical mechanics that is very similar to the quantum mechanical formalism. Both in KvN mechanics and quantum mechanics, a propagator in a homogeneous gravitational field is simply related with a free propagator. As a result, the wave function in a homogeneous gravitational field in a freely falling reference frame differs from the free wave function only in phase. Fisher information, which quantifies our ability to estimate mass from coordinate measurements, does not depend on the magnitude of the homogeneous gravitational field, and this fact constitutes the formulation of Einstein's principle of equivalence, which is valid both in quantum mechanics and KvN mechanics.
description: 46 pages, no figures, to be published in Annals of Physics
Trigonal layered rosiaite-related antiferromagnet MnSnTeO6: ion-exchange preparation, structure and magnetic properties
Creators: name: Nalbandyan, V. B.
name: Evstigneeva, M. A.
name: Vasilchikova, T. M.
name: Bukhteev, K. Yu.
name: Vasiliev, A. N.
name: Zvereva, E. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Ion-exchange treatment of Na2SnTeO6 in molten salt mixtures resulted in rosiaite (PbSb2O6)-related MnSnTeO6. Its crystal structure was refined by the Rietveld method. Of the three possible models of Sn/Te distribution, the disordered model ((P3 Im, a = 5.23093(11) A, c = 4.62430(16) A was preferred based on bond distances. However, it is supposed that each individual (SnTeO6)2- layer retains complete ordering of the precursor and the apparent disorder is only due to stacking faults. The magnetic studies have shown that MnSnTeO6 orders antiferromagnetically at Neel temperature TN = 9.8 K. The effective magnetic moment reasonably agrees with theoretical estimations assuming high-spin configuration of Mn2+ (S = 5/2). Electron spin resonance reveals spin dynamics in accordance with aniferromagnetic ordering with critical broadening of ESR linewidth indicating the low-dimentional type of exchange interactions. Based on the temperature and field-dependent magnetization studies, the magnetic phase diagram of the new compound was constructed.
Gleason-Kahane-Żelazko theorems in function spaces
Creators: name: Mashreghi, Javad
name: Ransford, Thomas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Functional Analysis (math.FA)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 15A86 (primary) 30H10, 46H05, 46H40, 47B49

description: The Gleason-Kahane-Żelazko theorem states that a linear functional on a Banach algebra that is non-zero on invertible elements is necessarily a scalar multiple of a character. Recently this theorem has been extended to certain Banach function spaces that are not algebras. In this article we present a brief survey of these extensions.
description: arXiv admin note: text overlap with arXiv:1510.08128
Mixture of partially linear experts
Creators: name: Hwang, Yeongsan
name: Seo, Byungtae
name: Oh, Sangkon
Publisher: name: arXiv
Year: 2024
Subjects: subject: Methodology (stat.ME)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: In the mixture of experts model, a common assumption is the linearity between a response variable and covariates. While this assumption has theoretical and computational benefits, it may lead to suboptimal estimates by overlooking potential nonlinear relationships among the variables. To address this limitation, we propose a partially linear structure that incorporates unspecified functions to capture nonlinear relationships. We establish the identifiability of the proposed model under mild conditions and introduce a practical estimation algorithm. We present the performance of our approach through numerical studies, including simulations and real data analysis.
Wages, hours, earnings and employment under unionism
Creators: name: Kim, Woo-Yung
Publisher: name: University of British Columbia
Year: 2009

description: Most studies on unions have concentrated on examining the union impact on wages. This thesis, in two essays, examines the union impact on wages, hours, earnings and employment, particularly focussing on the union impact on hours of work. The first essay summarizes previous theoretical union models which normally assume fixed hours of work and extends them so that hours as well as wages and employment can be determined by collective bargaining. Three kinds of union models are employed to examine union impacts on hours as well as union impacts on wages and employment: the monopoly union model (Oswald [1982]), the right to manage model (Nickell [1981]; Nickell and Andrews [1983]) and the efficient contracts model (McDonald and Solow [1980]). The predicted union impact on hours and employment is found to be ambiguous while the union impact on wages is found to be positive. The second essay is concerned with estimating union-nonunion wage, hours and earn ings differentials. Using the 1990 Labour Market Activity Survey, this essay finds that (1) union-nonunion hours differentials are ambiguous for males, but they are positive for females, (2) employers in the union sector extract more hours from more able workers and this contributes greatly to the positive union-nonunion hours differential and (3) union-nonunion hours differentials are smaller for males than for females and as a result, union-nonunion earnings differentials are larger for females than for males.
Calculated Unconventional Superconductivity via Charge Fluctuations in Kagome Metal CsV3Sb5
Creators: name: Tian, Yuan
name: Savrasov, Sergey Y.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Electrons on Kagome lattice exhibit a wealth of features including Dirac points, van Hove singularities and flatbands. When the Fermi level is placed at the van Hove saddle point, the Fermi surface is perfectly nested and a rich variety of electronic instabilities is known to occur. The material realization of such scenario is a recently discovered Kagome system CsV3Sb5 whose superconductivity near charge-density wave instability at low temperatures points to an unconventional, non-electron-phonon, pairing mechanism. Here we use a recently developed combination of density functional theory with momentum and frequency-resolved self-energies deduced from the so-called fluctuational-exchange-type random phase approximation to study charge fluctuation mediated pairing tendencies in CsV3Sb5. Based on our numerical diagonalization of the BCS gap equation, two competing solutions emerge from these calculations with A_{1g} (anisotropic s-wave-like) and B_{2g} (d_{x2-y2},d_{xy}-like) symmetries of the superconducting order parameter. Our evaluated Eliashberg spectral functions α2F(ω) are purely due to electronic correlations; they were found to be strongly peaked in the vicinity of frequency 7 meV that sets the scale of charge fluctuations. The superconducting coupling constants for the leading pairing channels are estimated as a function of the nearest neighbor Coulomb interaction V, a well-known prime parameter of the extended Hubbard model. They were found in the range of 0.2-0.4 depending on V. We evaluate the superconducting T_{c} close to the values that are observed experimentally that point to the charge fluctuations to provide a substantial contribution to the pairing mechanism in CsV3Sb5.
description: 6 pages, 4 figures
Stability and growth in a global economy
Creators: name: Visco, Ignazio
Publisher: name: PSL Quarterly Review
Year: 2019
Subjects: subject: globalisation, technological progress, climate change
subject: F6, O33, Q54, J11

description: The hopes that dawned with the end of the Cold War of improving everyone’s well-being through globalisation and technological progress have been partly disappointed. They have been replaced by uncertainty about the effects of these profound changes on the distribution of wealth, the availability of work, the possibility of growth continuing at the same pace as in the last few decades, the impact on the environment, the consequences of demographic trends, and the balance of power between countries, between companies, and between companies and consumers. The need to govern these changes is now clear and greater attention must be paid to those who have difficulty adapting, not only in advanced countries, where automation and global competition are displacing many workers employed in routine jobs, but also in emerging and developing countries, where the prospects of further poverty reduction are diminishing. These are crucial challenges for the world economy. JEL codes: F6, O33, Q54, J11
description: PSL Quarterly Review, V. 72, N. 289 (2019): june