cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
I.Lock_STRING_CODEBOOK_SAMPLE_Explicating Relationships_Systematic Review
Creators: name: I.J. Lock
Publisher: name: University of Amsterdam / Amsterdam University of Applied Sciences
Year: 2019
Subjects: Social Science

description: This file is the appendix to the article "Explicating Communicative Organization-Stakeholder Relationships in the Digital Age: A Systematic Review and Research Agenda." published in Public Relations Review. It contains the search string of the systematic review, the applied codebook, and the list of references included in the analysis.
Properties of steel micro-fiber reinforced cementitious material
Creators: name: Yan, Ning
Publisher: name: University of British Columbia
Year: 2009

description: The addition of micro-fibers improves not only the tensile strain capacity but also the tensile strength of cementitious materials. Among the different types of micro-fibers currently in use, steel micro-fibers which are characterized by high strength, high stiffness and low cost, have great potential to be used in many applications. The fracture properties of steel micro-fiber reinforced cementitious are, however, not well understood and are necessary for optimization. Three aspects of steel micro-fiber reinforced cementitous materials are examined in this thesis: (1) characteristics of bond between steel microfiber and cement paste; (2) properties of steel micro-fiber reinforced mortar (SMFRM) under uniaxial tension; and (3) properties of SMFRM in flexure. Single fiber pull-out tests were used to study the characteristics of bond between steel micro-fiber and cement paste. A feed-back controlled system, which could avoid the sudden fracture of specimens at peak load, was installed in the uniaxial tensile tests. Similarly, crack-opening controlled, four-point flexural tests were performed on beams. Data collected from these tests were analyzed by computer programs written in the FORTRAN language. In pull-out tests, the highest peak pull-out load and the highest total energy absorption were obtained when the micro-fiber was aligned in the loading direction. This suggests that the optimum inclined angle of fiber is 0°. The increase of silica fume content in the matrix increased the strength of bond between steel micro-fiber and the cement-based matrix. The results of the uniaxial tensile tests and the flexural tests show, as expected, that the strength and toughness of SMFRM increases with an increase in the fiber volume fraction. SMFRM with fibers having larger diameters had higher toughness. The addition of longer fibers in SMFRM also yielded higher toughness. But, with longer fibers, the workability of steel micro-fiber mortar mixtures was inadequate. Short thick fibers, on the other hand, were easy to be mixed at high volume fractions (5% or more) without workability problems. While the inclusion of a polymer in cement mortar increased the toughness of SMFRM significantly, an increase in the sand content in cement mortar led to a significant increase in the strength. Overall, the addition of steel micro-fibers improved the properties of cementitious materials dramatically.
A translational flavor symmetry in the mass terms of Dirac and Majorana fermions
Creators: name: Xing, Zhi-zhong
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Requiring the effective mass term for a category of fundamental Dirac or Majorana fermions of the same electric charge to be invariant under the translational transformations $ψ^{}_{α\rm L (R)} \to ψ^{}_{α\rm L (R)} + n^{}_α z^{}_{ψ\rm L(R)}$ in the flavor space, where $n^{}_α$ and $z^{}_{ψ\rm L(R)}$ stand respectively for the flavor-dependent complex numbers and a constant spinor field anticommuting with the fermion fields, we show that $n^{}_α$ can be identified as the elements $U^{}_{αi}$ in the $i$-th column of the unitary matrix $U$ used to diagonalize the corresponding Hermitian or symmetric fermion mass matrix $M^{}_ψ$, and $m^{}_i = 0$ holds accordingly. We find that the reverse is also true. Now that the mass spectra of charged leptons, up- and down-type quarks are all strongly hierarchical and current experimental data allow the lightest neutrino to be massless, we argue that the zero mass limit for the first-family fermions and the translational flavor symmetry behind it should be a natural starting point for building viable fermion mass models.
description: 15 pages. A proof is given to show that the translation of a massless neutrino field, which assures the Dirac equation to be invariant, is equivalent to the translational transformations of three neutrino flavor states in the flavor space as a consequence of flavor mixing. More discussions are added. Accepted for publication in JPG
QCD phase diagram and charge fluctuations
Creators: name: Redlich, K.
name: Friman, B.
name: Sasaki, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We discuss the phase structure and fluctuations of conserved charges in two flavor QCD. The importance of the density fluctuations to probe the existence of the critical end point is summarized. The role of these fluctuations to identify the first order phase transition in the presence of spinodal phase separation is also discussed.
description: 8 pages, 8 figures, plenary talk given at the 19th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions: Quark Matter 2006 (QM 2006), Shanghai, China, 14-20 Nov 2006
Beyond Horndeski interactions induced by quantum effects
Creators: name: Latosh, Boris
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Opportunity to generate beyond Horndeski interactions is addressed. An amplitude generating a certain beyond Horndeski coupling is explicitly found. The amplitude is free from ultraviolet divergences, so it is protected from ultraviolet contributions and can be considered as a universal prediction of effective field theory.
description: accepted to Modern Physics Letters A; 10 pages; matches the accepted version
Estimation in a fluctuating medium and power-law distributions
Creators: name: Vignat, C.
name: Plastino, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We show how recent results by Bening and Korolev in the context of estimation, when linked with a classical result of Fisher concerning the negative binomial distribution, can be used to explain the ubiquity of power law probability distributions. Beck, Cohen and others have provided plausible mechanisms explaining how power law probability distributions naturally emerge in scenarios characterized by either finite dimension or fluctuation effects. This paper tries to further contribute to such an idea. As an application, a new and multivariate version of the central limit theorem is obtained that provides a convenient alternative to the one recently presented in [S. Umarov, C. Tsallis, S. Steinberg, cond-mat/0603593].
description: 4 pages, 2 figures
Thermodynamics of the PNJL model with nonzero baryon and isospin chemical potentials
Creators: name: Mukherjee, Swagato
name: Mustafa, Munshi G.
name: Ray, Rajarshi
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We have extended the Polyakov-Nambu-Jona-Lasinio (PNJL) model for two degenerate flavours to include the isospin chemical potential ($μ_I$). All the diagonal and mixed derivatives of pressure with respect to the quark number (proportional to baryon number) chemical potential ($μ_0$) and isospin chemical potential upto sixth order have been extracted at $μ_0 = μ_I = 0$. These derivatives give the generalized susceptibilities with respect to quark and isospin numbers. Similar estimates for the flavour diagonal and off-diagonal susceptibilities are also presented. Comparison to Lattice QCD (LQCD) data of some of these susceptibilities for which LQCD data are available, show similar temperature dependence, though there are some quantitative deviations above the crossover temperature. We have also looked at the effects of instanton induced flavour-mixing coming from the $U_A(1)$ chiral symmetry breaking 't Hooft determinant like term in the NJL part of the model. The diagonal quark number and isospin susceptibilities are completely unaffected. The off-diagonal susceptibilities show significant dependence near the crossover. Finally we present the chemical potential dependence of specific heat and speed of sound within the limits of chemical potentials where neither diquarks nor pions can condense.
description: 15 pages, 7 figures, Added discussions and references, version to appear in Phys. Rev. D
On inequalities for sums of bounded random variables
Creators: name: Pinelis, Iosif
Publisher: name: arXiv
Year: 2006
Subjects: subject: Probability (math.PR)
subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 60E15, 60G50, 60G42, 60G48, 26A48, 26D10

description: Let $η_{1},η_2,...$ be independent (not necessarily identically distributed) zero-mean random variables (r.v.'s) such that $|η_i|\le1$ almost surely for all $i$, and let $Z$ stand for a standard normal r.v. Let $a_1,a_2,...$ be any real numbers such that $a_1^2+a_2^2+...=1.$ It is shown that then $$ ¶(a_1η_1+a_2η_2+...\ge x) \le ¶(Z\ge x-\la/x) \forall x>0, $$ where $\la := \ln\frac{2e^3}9=1.495...$. The proof relies on (i) another probability inequality and (ii) a l'Hospital-type rule for monotonicity, both developed elsewhere. A multidimensional analogue of this result is given, based on a dimensionality reduction device, also developed elsewhere. In addition, extensions to (super)martingales are indicated.
description: 6 pages; the result in the previous version is strengthened and extended
Matter induced charge symmetry breaking and pion form factor in nuclear medium
Creators: name: Roy, Pradip
name: Dutt-Mazumder, Abhee K.
name: Sarkar, Sourav
name: Alam, Jan-e
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Medium modification of pion form factor has been evaluated in asymmetric nuclear matter. It is shown that both the shape and the pole position of the pion form factor in dense asymmetric nuclear matter is different from its vacuum counterpart with $ρ$-$ω$ mixing. This is due to the density and asymmetry dependent $ρ$-$ω$ mixing which could even dominate over its vacuum counterpart in matter. Effect of the in-medium pion factor on experimental observables {\it e.g.}, invariant mass distribution of lepton pairs has been demonstrated.
description: Final Version to appear in Jour. Phys. G
One dimensional stable probability density functions for rational index $\bf 0
Creators: name: Hatzinikitas, Agapitos
name: Pachos, Jiannis K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences
subject: 02.50.-r, 05.40-a, 02.30.Rz, 02.30.Gp

description: Fox's H-function provide a unified and elegant framework to tackle several physical phenomena. We solve the space fractional diffusion equation on the real line equipped with a delta distribution initial condition and identify the corresponding H-function by studying the small $x$ expansion of the solution. The asymptotic expansions near zero and infinity are expressed, for rational values of the index $α$, in terms of a finite series of generalized hypergeometric functions. In $x$-space, the $α=1$ stable law is also derived by solving the anomalous diffusion equation with an appropriately chosen infinitesimal generator for time translations. We propose a new classification scheme of stable laws according to which a stable law is now characterized by a generating probability density function. Knowing this elementary probability density function and bearing in mind the infinitely divisible property we can reconstruct the corresponding stable law. Finally, using the asymptotic behavior of H-function in terms of hypergeometric functions we can compute closed expressions for the probability density functions depending on their parameters $α, β, c, τ$. Known cases are then reproduced and new probability density functions are presented.
description: 22 pages, 1 figure
Generalising Landauer's Principle
Creators: name: Maroney, O. J. E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In a recent paper [Mar05] it is argued that to properly understand the thermodynamics of Landauer's Principle it is necessary extend the concept of logical operations to include indeterministic operations. Here we examine the thermodynamics of such operations in more detail, extending the work of Landuaer[Lan61] to include indeterministic operations and to include logical states with variable entropies, temperatures and mean energies. We derive the most general statement of Landauer's Principle and prove it's universality, extending considerably the validity of previous proofs. This confirms conjectures made in [Mar05b], in particular that all logical operations may, in principle, be performed in a thermodynamically reversible fashion. We demonstrate a physical process that can perform any computation without work requirements or heat exchange with the environment. Many widespread statements of Landauer's Principle are shown to be only special cases of our generalised principle.
description: 29 pages, 4 figures. v4 Major changes to thermodynamic reversibility discussion
Στατιστική ανάλυση στοιχείων μεγάλων εταιρειών που χρηματοδοτούνται από κράτη με βάση ανοιχτά δεδομένα δημόσιων πληρωμών:
Creators: name: Αδαμοπούλου, Αννα Αναστασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: subject: Πολυεθνικές εταιρείες
subject: Δημόσιες πληρωμές
subject: Στατιστική
subject: Multinational companies
subject: Public Spending
subject: Statistics
subject: FOS: Mathematics

description: Στις μέρες μας, ο ρόλος των πολυεθνικών εταιρειών ως επιταχυντών των άνευ προηγουμένου μετασχηματισμών που βιώνουμε σε παγκόσμιο επίπεδο δεν μπορεί να αμφισβητηθεί, καθώς τα στατιστικά στοιχεία δείχνουν ότι αυτού του είδους οι επιχειρήσεις διαθέτουν μεγάλη οικονομική και πολιτική δύναμη και έχουν την δυνατότητα να προωθήσουν την ανάπτυξη των κρατών. Από τις 2000 πολυεθνικές εταιρείες που βρίσκονται στη λίστα Forbes Global 2000 του 2013, 371 έχουν λάβει χρήματα από τις κυβερνήσεις των Η.Π.Α., του Ηνωμένου Βασιλείου, της Αυστραλίας, της Ελλάδας, τις πολιτείες της Αλάσκας και της Μασαχουσέτης και την πόλη του Σικάγο. Στο πλαίσιο της παρούσας διπλωματικής εργασίας αναλύουμε τα δεδομένα της λίστας Global 2000 του περιοδικού Forbes, καθώς και ανοιχτά δεδομένα χρηματοδοτήσεων από τις προαναφερθείσες κυβερνήσεις προς τις εταιρείες της λίστας αυτής με στόχο τη διερεύνηση της σχέσης που υπάρχει μεταξύ των δημόσιων πληρωμών και της οικονομικής κατάστασης των μεγάλων πολυεθνικών εταιρειών.
description: Nowadays, the role of multinational companies as an accelerator of unprecedented transformations to which we are witnessing at a global level cannot be questioned, since statistics show that such companies own great economic and political power and are able to propel the development of any state. 371 out of the 2000 companies of the Forbes Global 2000 list for 2013 have received public money from US, UK, Australia, Greece, states of Alaska and Massachusetts and the city of Chicago. Within the context of this thesis, we statistically analyze data from Forbes Global 2000 list, as well as open data related to public funds to the companies of the list coming from the above mentioned governments in order to investigate the relationship between public payments and multinational companies’ economic status.
Tightly Localized Stationary Pulses in Multi-Level Atomic System
Creators: name: Liu, Xiong-Jun
name: Liu, Xin
name: Liu, Zheng-Xin
name: Kwek, L. C.
name: Oh, C. H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show the pulse matching phenomenon can be obtained in the general multi-level system with electromagnetically induced transparency (EIT). For this we find a novel way to create tightly localized stationary pulses by using counter-propagating pump fields. The present process is a spatial compression of excitation so that it allows us to shape and further intensify the localized stationary pulses, without using standing waves of pump fields or spatially modulated pump fields.
description: 5 pages, 3 figures; final version (Fig.3 is revised); to appear in Phys. Rev. A
The closeness of the Ablowitz-Ladik lattice to the Discrete Nonlinear Schrödinger equation
Creators: name: Hennig, Dirk
name: Karachalios, Nikos I.
name: Cuevas-Maraver, Jesús
Publisher: name: arXiv
Year: 2021
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: While the Ablowitz-Ladik lattice is integrable, the Discrete Nonlinear Schrödinger equation, which is more significant for physical applications, is not. We prove closeness of the solutions of both systems in the sense of a "continuous dependence" on their initial data in the $l^2$ and $l^{\infty}$ metrics. The most striking relevance of the analytical results is that small amplitude solutions of the Ablowitz-Ladik system persist in the Discrete Nonlinear Schrödinger one. It is shown that the closeness results are also valid in higher dimensional lattices as well as for generalised nonlinearities. For illustration of the applicability of the approach, a brief numerical study is included, showing that when the 1-soliton solution of the Ablowitz-Ladik system is initiated in the Discrete Nonlinear Schrödinger system with cubic and saturable nonlinearity, it persists for long-times. Thereby excellent agreement of the numerical findings with the theoretical predicti ions is obtained.
description: 13 pages, 3 figures
Next-to-leading order mixed QCD-electroweak corrections to Higgs boson production in gluon fusion
Creators: name: Bonetti, Marco
Publisher: name: Karlsruhe
Year: 2019
Subjects: Higgs gluon fusion
Mixed QCD-EW
NLO
multi-loop

description: In this thesis next-to-leading order mixed QCD-electroweak corrections to the Higgs boson gluon-fusion cross section are evaluated. Leading order and virtual next-to-leading order amplitudes are expressed in terms of two- and three-loop master integrals. These integrals are evaluated using differential equations augmented by the choice of a basis of uniformly transcendental functions. The integration constants are fixed in a systematic way by numerically matching the solutions to their large-mass expansion. The analytic results for the master integrals are expressed in terms of uniformly transcendental combinations of Goncharov polylogarithms. The real emission contributions are implemented using the soft-gluon approximation. The evaluation of the cross section shows that the ratio between QCD and mixed QCD-electroweak contributions to the cross section remains nearly unchanged from leading order to next-to-leading order. This result removes one of the important uncertainties if the Higgs boson gluon fusion cross section.
Ion beam induced modification of exchange interaction and spin-orbit coupling in the Co$_2$FeSi Heusler compound
Creators: name: Hamrle, J.
name: Blomeier, S.
name: Gaier, O.
name: Hillebrands, B.
name: Schneider, H.
name: Jakob, G.
name: Reuscher, B.
name: Brodyanski, A.
name: Kopnarski, M.
name: Postava, K.
name: Felser, C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A Co$_2$FeSi (CFS) film with L2$_1$ structure was irradiated with different fluences of 30 keV Ga$^+$ ions. Structural modifications were subsequently studied using the longitudinal (LMOKE) and quadratic (QMOKE) magneto-optical Kerr effect. Both the coercivity and the LMOKE amplitude were found to show a similar behavior upon irradiation: they are nearly constant up to ion fluences of $\approx6\times10^{15}$ ion/cm$^2$, while they decrease with further increasing fluences and finally vanish at a fluence of $\approx9\times10^{16}$ ion/cm$^2$, when the sample becomes paramagnetic. However, contrary to this behavior, the QMOKE signal nearly vanishes even for the smallest applied fluence of $3\times10^{14}$ ion/cm$^2$. We attribute this reduction of the QMOKE signal to an irradiation-induced degeneration of second or higher order spin-orbit coupling, which already happens at small fluences of 30 keV Ga$^+$ ions. On the other hand, the reduction of coercivity and LMOKE signal with high ion fluences is probably caused by a reduction of the exchange interaction within the film material.
Even values of Ramanujan's tau-function
Creators: name: Balakrishnan, Jennifer S.
name: Ono, Ken
name: Tsai, Wei-Lun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: In the spirit of Lehmer's speculation that Ramanujan's tau-function never vanishes, it is natural to ask whether any given integer $α$ is a value of $τ(n)$. For odd $α$, Murty, Murty, and Shorey proved that $τ(n)\neq α$ for sufficiently large $n$. Several recent papers have identified explicit examples of odd $α$ which are not tau-values. Here we apply these results (most notably the recent work of Bennett, Gherga, Patel, and Siksek) to offer the first examples of even integers that are not tau-values. Namely, for primes $\ell$ we find that $$ τ(n)\not \in \{ \pm 2\ell \ : \ 3\leq \ell< 100\} \cup \{\pm 2\ell^2 \ : \ 3\leq \ell <100\} \cup \{\pm 2\ell^3 \ : \ 3\leq \ell<100\ {\text {\rm with $\ell\neq 59$}}\}.$$ Moreover, we obtain such results for infinitely many powers of each prime $3\leq \ell<100$. As an example, for $\ell=97$ we prove that $$τ(n)\not \in \{ 2\cdot 97^j \ : \ 1\leq j\not \equiv 0\pmod{44}\}\cup \{-2\cdot 97^j \ : \ j\geq 1\}.$$ The method of proof applies mutatis mutandis to newforms with residually reducible mod 2 Galois representation and is easily adapted to generic newforms with integer coefficients.
description: La Matematica (2021)
Προσομοίωση εφοδιαστικής αλυσίδας στο λογισμικό πακέτο Simul8.:
Creators: name: Πουρσανίδης, Ιωάννης Αντύπα
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Εφοδιαστικές αλυσίδες
Προσομοίωση
Λογισμικό πακέτο Simul8
Supply Chain
Simulation
Software package Simul8

description: Σκοπός της παρούσας μεταπτυχιακής διπλωματικής εργασίας είναι η προσομοίωση μιας εφοδιαστικής αλυσίδας όπως αυτή περιγράφεται σε δημοσιευμένη εργασία στο επιστημονικό περιοδικό International Journal of Production Research. Αρχικά, δίνονται ορισμοί σχετικά με τις εφοδιαστικές αλυσίδες και τα συστήματα παραγωγής τύπου push και pull. Εν συνεχεία κατασκευάζεται το διάγραμμα κύκλου ενεργειών για το μελετώμενο σύστημα. Ακολουθεί η μοντελοποίηση του συστήματος στο λογισμικό πακέτο Simul8. Πραγματοποιείται ανάλυση ευαισθησίας για συγκεκριμένες εξεταζόμενες μετρικές και κατασκευάζεται παραγοντικός πειραματικός σχεδιασμός για την πληρέστερη διερεύνηση του μελετώμενου συστήματος. Τέλος, δημιουργείται ένα meta-μοντέλο για το σύστημα και παρατίθενται τα συμπεράσματα που προέκυψαν κατά τη διάρκεια εκπόνησης της παρούσας διπλωματικής εργασίας.
description: The aim of the present master thesis is the simulation of a specific supply chain as it is described in a published scientific article in the International Journal of Production Research. Initially, there are given definitions about supply chains and production systems of type push and production systems of type pull. Then, the activity cycle diagram is constructed for the considered system followed by the model of the system in software package Simul8. Sensitivity analysis is performed for selected metrics. There is also performed a factorial experimental design for the better understanding of the system. Finally, a meta-model is constructed for the considered system followed by the conclusions that were obtained during the development of the present master thesis.
Στάσεις, απόψεις και τρόποι διαχείρισης της θρησκευτικής ετερότητας από τους/τις νηπιαγωγούς:
Creators: name: Λυτσιούση, Στυλιανή Κυριάκου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Νηπιαγωγείο
Θρησκευτική αγωγή
Θρησκευτική ετερότητα
Kindergarten school
Religious education
Religious diversity

description: Η θρησκευτική ετερότητα στο ελληνικό νηπιαγωγείο αποτελεί πλέον μία πραγματικότητα που συναντάται σε όλες σχεδόν τις σχολικές αίθουσες. Οι νηπιαγωγοί καλούνται να διαχειριστούν με αποτελεσματικό τρόπο την ετερότητα αυτή. Το νομοθετικό πλαίσιο της θρησκευτικής ετερότητας οριοθετεί ως ένα βαθμό το εύρος των πρακτικών που θα εφαρμοστούν. Σημαντικό ρόλο όμως παίζουν οι απόψεις και οι στάσεις των ίδιων των νηπιαγωγών, εφόσον είναι αυτοί που υλοποιούν τη θρησκευτική αγωγή στο νηπιαγωγείο. Τις στάσεις, τις απόψεις και τους τρόπους διαχείρισης της θρησκευτικής ετερότητας από τους/τις νηπιαγωγούς εξετάζει η παρούσα έρευνα. Για το σκοπό αυτό δημιουργήθηκε ένα ερωτηματολόγιο, το οποίο δόθηκε σε 173 νηπιαγωγούς από διάφορες περιοχές της Ελλάδας. Για την ανάλυση των αποτελεσμάτων χρησιμοποιήθηκε το στατιστικό πακέτο spss 16. Τα αποτελέσματα έδειξαν ότι οι νηπιαγωγοί γνωρίζουν θεωρητικά πώς να διαχειρίζονται τη θρησκευτική ετερότητα, αλλά στην πράξη δεν τα εφαρμόζουν πάντα. Οι νεότεροι σε ηλικία νηπιαγωγοί και η κατηγορία των αναπληρωτών φάνηκαν να εφαρμόζουν πρακτικές που λαμβάνουν περισσότερο υπόψη τα αλλόθρησκα παιδιά.
description: Nowadays, the religious diversity is a reality in Greek kindergarten and it is found in almost all the classrooms. The kindergarten teachers are invited to manage effectiveness with this diversity. The legislative framework of religious diversity defines in some extent the range of practices that will be implemented. The opinions and the attitudes of kindergarten teachers play an important role, as they are those who implement the religious education in kindergarten school. This research examines the attitudes, the opinions and the ways of managing with religious diversity by kindergartener teachers. For this purpose, a questionnaire was given to 173 kindergarten teachers from various regions of Greece. The analysis of the results was made by the statistical package spss16. The results shown that teachers know how to manage with religion diversity theoretically, but in practice they do not implement always. Younger kindergarten teachers and assistants seemed to implement practices which take more into account of children of another religion
ImmuneRegulation: A web based tool for identifying human immune regulatory elements
Creators: name: Kalayci, Selim
name: Myvizhi Esai Selvan
name: Ramos, Irene
name: Cotsapas, Chris
name: Harris, Eva
name: Kim, Eun-Young
name: Montgomery, Ruth R.
name: Poland, Gregory
name: Bali Pulendran
name: Tsang, John S.
name: Klein, Robert J.
name: Gümüş, Zeynep H.
Publisher: name: F1000 Research Limited
Year: 2019

description: ImmuneRegulation is an open-access web tool that enables exploration of immune regulatory elements in multiple cohorts. Users can interactively explore its massive repository in a single interface to identify associations between gene(s) of interest and their regulators. These regulators can explain cohort or cell type dependent genetic variations which may be critical in hypothesis generation.
ImmuneRegulation currently provides the largest centrally integrated resource available in the literature on regulation of whole blood and blood cell types in a single, user-friendly web interface. ImmuneRegulation runs on all modern web browsers as it utilizes only standard libraries and does not necessitate any external plug-ins. Query Browser guides users to construct their queries properly; multiple curated queries are provided for users to gain familiarity; multiple tutorials help explain different functionalities.
ImmuneRegulation is freely available at http://immuneregulation.mssm.edu.
Weak-lensing Mass Reconstruction of Galaxy Clusters with Convolutional Neural Network
Creators: name: Hong, Sungwook E.
name: Park, Sangnam
name: Jee, M. James
name: Bak, Dongsu
name: Cha, Sangjun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We introduce a novel method for reconstructing the projected matter distributions of galaxy clusters with weak-lensing (WL) data based on convolutional neural network (CNN). Training datasets are generated with ray-tracing through cosmological simulations. We control the noise level of the galaxy shear catalog such that it mimics the typical properties of the existing ground-based WL observations of galaxy clusters. We find that the mass reconstruction by our multi-layered CNN with the architecture of alternating convolution and trans-convolution filters significantly outperforms the traditional reconstruction methods. The CNN method provides better pixel-to-pixel correlations with the truth, restores more accurate positions of the mass peaks, and more efficiently suppresses artifacts near the field edges. In addition, the CNN mass reconstruction lifts the mass-sheet degeneracy when applied to our projected cluster mass estimation from sufficiently large fields. This implies that this CNN algorithm can be used to measure cluster masses in a model-independent way for future wide-field WL surveys.
description: 18 pages, 13 figures, ApJ accepted
An examination of trace metal contamination and land use in an urban watershed
Creators: name: McCallum, Donald Wayne
Publisher: name: University of British Columbia
Year: 2009

description: The Brunette River Watershed is intensely urbanized, occupying 7200 hectares in the geographic centre of the Greater Vancouver Regional District in British Columbia. This study examines lake, stream, and street sediment trace metal contaminant history in the watershed in relation to changing land uses. Contamination of Burnaby Lake surface sediments with Pb, Cu, Zn, and Cd is indicated by their respective enrichment factors of 10, 6, 3.8, and 1.5. Chromium, Ni, Mg, Fe, and Mh are not enriched in the surface sediments. Calculated fluxes of Pb, Cu, and Zn entering Burnaby Lake are from 3 to 10 times higher than measured in two comparable urban lakes. Stream contamination is indicated by the failure of all 33 stream stations to meet watershed sediment criteria for Pb, Cu, and Zn and 13 stream stations for Hg. Trace metal concentrations in Burnaby Lake sediments increased steadily from 1950, during a period of rapid urbanization. A sharp peak in Cu, Cr, Cd, and Ni concentrations in 1970 is related to industrial discharges in the Still Creek area at the time. Lead has decreased over the past 20 years in lake, stream, and street sediments as a result of the removal of the Pb additive, TEL, from gasoline. During this time, Zn, Cu, Mn, and Hg increased in stream sediments by 45 , 81, 130, and 290 percent respectively. Land use changes since 1973 have been small compared to demographic and traffic changes. Lake sediment contaminant profiles and spatial patterns of stream and street sediment contamination indicate that traffic contributes a large proportion of the Pb, Cu, and Zn loading to the watershed. The large Mn increases in stream sediments since 1973 may be related to in-stream chemical transformations, possibly resulting from usage of the gasoline additive, MMT. Increases in stream sediment Hg levels may be related to point-source emissions originating outside the watershed. Permeable land cover in the upland areas has mitigated some of the effects of nonpoint source pollution generated in more densely populated lower river reaches and has contributed to a relatively healthy aquatic habitat in the eastern region of the watershed. Much of the recent reduction in permeable land cover has occurred in these upland areas.
Nucleon mass: from lattice QCD to the chiral limit
Creators: name: Procura, M.
name: Musch, B. U.
name: Wollenweber, T.
name: Hemmert, T. R.
name: Weise, W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Previous extrapolations of lattice QCD results for the nucleon mass to the physically relevant region of small quark masses, using chiral effective field theory, are extended and expanded in several directions. A detailed error analysis is performed. An approach with explicit delta(1232) degrees of freedom is compared to a calculation with only pion and nucleon degrees of freedom. The role of the delta(1232) for the low-energy constants of the latter theory is elucidated. The consistency with the chiral perturbation theory analysis of pion-nucleon scattering data is examined. It is demonstrated that this consistency can indeed be achieved if the delta(1232) dominance of the P-wave pion-nucleon low-energy constant c3 is accounted for. Introduction of the delta(1232) as an explicit propagating degree of freedom is not crucial in order to describe the quark-mass dependence of the nucleon mass, in contrast to the situation with spin observables of the nucleon. The dependence on finite lattice volume is shown to yield valuable additional constraints. What emerges is a consistent and stable extrapolation scheme for pion masses below 0.6 GeV.
description: 15 pages, 11 figures; revised version, added one section
Η κατάπτωση των μη ληξιπρόθεσμων μισθωμάτων κατά την καταγγελία της σύμβασης leasing από τον εκμισθωτή:
Creators: name: Ματθαιάδου, Γεωργία Αλέξανδρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Χρηματοδοτική μίσθωση
Καταγγελία σύμβασης
Ποινική ρήτρα
leasing
termination of a contract
penalty clause

description: Αντικείμενο έρευνας της παρούσας μεταπτυχιακής εργασίας συνιστούν οι έννομες συνέπειες της καταγγελίας της σύμβασης leasing λόγω υπερημερίας του μισθωτή ως προς την καταβολή του μισθώματος. Ιδιαίτερα αναλύεται η λειτουργία της συμφωνίας περί καταβολής των μελλοντικών, μη ληξιπρόθεσμων, μισθωμάτων. Στο πρώτο μέρος της μελέτης αναπτύσσονται τα γενικά χαρακτηριστικά της σύμβασης leasing. Ειδικότερα αναλύονται η έννοια και οι μορφές εμφάνισης της, τα ουσιώδη στοιχεία της, η νομική της φύση, τα δικαιώματα και οι υποχρεώσεις των μερών. Στο δεύτερο μέρος αναλύεται η καταγγελία της σύμβασης leasing και η συμφωνηθείσα ρήτρα περί κατάπτωσης των μη ληξιπρόθεσμων μισθωμάτων. Για λόγους συστηματικούς το δεύτερο μέρος διακρίνεται σε δύο κεφάλαια. Το πρώτο κεφάλαιο πραγματεύεται τους τρόπους λύσης της σύμβασης με έμφαση στην καταγγελία από τον εκμισθωτή. Στο δεύτερο κεφάλαιο ερευνάται η νομική φύση της ρήτρας κατάπτωσης των μελλοντικών, μη ληξιπρόθεσμων, μισθωμάτων. Η ρήτρα αυτή κρίνεται ως ποινική ρήτρα. Στην συνέχεια ελέγχεται αν και υπό ποιες προϋποθέσεις μπορεί να θεωρηθεί υπέρμετρη κατά τα άρθρα 409 και 281 ΑΚ. Εφόσον πρόκειται για ΓΟΣ, κατά τον έλεγχο του κύρους της εφαρμόζεται το άρθρο 2 του ν. 2251/1994. Στο τρίτο και τελευταίο μέρος παρατίθενται τα γενικά χαρακτηριστικά της σύμβασης της Οττάβα που αφορά το διεθνές leasing.
description: This postgraduate thesis concerns the legal consequences stemming from the termination of leasing contract, due to the late payment of the rent by the lessee. It analyzes in particular the operation of the agreement on the payment of future and non-overdue rents. In its first part, the study explains the general characteristics of the leasing contract. It examines its notion and forms; its essential elements; its legal nature; and the rights and obligations of the parties. In its second part, the study analyzes the termination of leasing contract and the agreed clause of forfeiture of non-overdue rents. For systematic reasons, the second part of the thesis is divided into two chapters. The first chapter deals with ways to terminate a leasing contract, with emphasis on its termination by the lessor. The second chapter examines the legal nature of the clause of forfeiture of future and non-overdue rents. This clause is considered as a penalty clause. It is examined then whether and under which conditions it may be considered as excessive, pursuant to Articles 409 and 281 of the Civil Code. As concerns General Terms and Conditions, their validity assessment is carried out pursuant to Article 2 of Law 2251/1994. In its third and last part, the thesis presents the general characteristics of the Ottawa Convention on international leasing.
Μελέτη διόγκωσης υδρογέλης σε διαλύματα
Creators: name: Κυριακοπούλου, Αννα Αντωνίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: υδρογέλη
υπεραπορροφητικό πολυμερές
διόγκωση
hydrogel
superabsorbent polymer
swelling

description: Αντικείμενο της παρούσας διπλωματικής εργασίας είναι η μελέτη ενός «έξυπνου» υπεραπορροφητικού πολυμερούς το οποίο καλείται υδρογέλη ή υδροπήκτωμα (hydrogel). Στο θεωρητικό μέρος της εργασίας, ορίζονται και μελετώνται βασικές έννοιες, όπως τα έξυπνα υλικά και τα πολυμερή. Αναλυτικότερα παρουσιάζεται η υδρογέλη και συγκεκριμένα οι κατηγορίες υδρογελών, οι μέθοδοι παρασκευής της, οι ιδιότητες και ο μηχανισμός διόγκωσης της. Αναφέρονται επίσης, οι μέθοδοι χαρακτηρισμού και εφαρμογές των υδρογελών. Στο πειραματικό μέρος, γίνεται μελέτη της διόγκωσης της υδρογέλης μέσα στο νερό και μέσα σε διαλύματα. Συγκεκριμένα, πέρλες υδρογέλης τοποθετήθηκαν μέσα σε νερό και μέσα σε υδατικά διαλύματα χλωριούχου νατρίου, όξινου ανθρακικού νατρίου και σακχαρόζης και λήφθησαν μετρήσεις όγκου συναρτήσει του χρόνου. Τα πειράματα επανελήφθησαν πολλές φορές μεταβάλλοντας κάθε φορά την συγκέντρωση της εκάστοτε διαλυμένης ουσίας. Από τις πειραματικές τιμές όγκου, υπολογίστηκαν οι τιμές της ακτίνας και έγινε προσαρμογή των πειραματικών δεδομένων με τα θεωρητικά δεδομένα της βιβλιογραφίας. Έτσι, προέκυψαν κάποια συμπεράσματα όσον αφορά την συμπεριφορά της υδρογέλης σε κάθε διάλυμα και όσον αφορά τον μηχανισμό διόγκωσης της.
description: The subject of this thesis is the study of a "smart" superabsorbent polymer called hydrogel. In the theoretical part of this work, basic concepts, such as smart materials and polymers are defined and studied. Specifically, the hydrogel occurs and also the types of hydrogel, methods of preparation, the properties of hydrogel and the mechanism of swelling. Methods of characterization and applications of hydrogel are mentioned too. In the experimental part takes place a study of hydrogel swelling in water and in solutions. Specifically, the hydrogel beads were placed in water and in aqueous solutions of sodium chloride, sodium bicarbonate and sucrose and volume measurements over time were obtained. The experiments repeated several times by changing each time the concentration of each solute. Using the experimental values of volume, the values of radius were calculated and then a fitting between experimental and theoretical data took place. Thus, some conclusions arose regarding the behavior of the hydrogel to each solution and regarding the mechanism of swelling.
description: Σε συνεργασία με το Ινστιτούτο Τεχνολογίας Γκρενόμπλ (Γαλλία), το ΕΚΕΦΕ Δημόκριτος, και το CNRS (Centre National de la Researche Scientifique, Γαλλία)
Gaussian core model phase diagram and pair correlations in high Euclidean dimensions
Creators: name: Zachary, Chase E.
name: Stillinger, Frank H.
name: Torquato, Salvatore
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The physical properties of a classical many-particle system with interactions given by a repulsive Gaussian pair potential are extended to arbitrarily high Euclidean dimensions. The goals of this paper are to characterize the behavior of the pair correlation function (pcf) in various density regimes and to understand the phase properties of the Gaussian core model (GCM) as parametrized by dimension d. To this end, we explore the fluid and crystalline solid phases. For the dilute regime of the fluid phase, a cluster expansion of the pcf in reciprocal temperature is presented, the coefficients of which may be evaluated analytically due to the nature of the Gaussian potential. We present preliminary results concerning the convergence properties of this expansion. The analytical cluster expansion is related to numerical approximations for the pcf in the dense fluid regime by utilizing hypernetted chain, Percus-Yevick, and mean-field closures to the Ornstein-Zernike equation. Based on the results of these comparisons, we provide evidence in support of a decorrelation principle for the GCM in high Euclidean dimensions. In the solid phase, we consider the behavior of the freezing temperature in the limit of zero density and show that it approaches zero itself in this limit for any d via a collective coordinate argument. Duality relations with respect to the energies of a lattice and its dual are then discussed, and these relations aid in the Maxwell double-tangent construction of phase coexistence regions between dual lattices based on lattice summation energies. The results from this analysis are used to draw conclusions about the ground-state structures of the GCM for a given dimension.
description: 23 pages, 8 figures, 1 table
WH-Movement: The Case of Greek Learners of English:
Creators: name: Κατσανίδη, Θεοδώρα Πολύκαρπου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Μετακίνηση wh-φράσης
Ελληνικά
Αγγλικά
wh-movement
Greek
English

description: Η παρούσα μελέτη αναλύει τον τρόπο με τον οποίο η μετακίνηση των wh- φράσεων πραγματοποιείται στις αγγλικές και ελληνικές ερωτηματικές προτάσεις. Επιπλέον, παρουσιάζονται τα αποτελέσματα μιας έρευνας που δείχνουν τί έχουν κατακτήσει οι νεαροί μαθητές που διδάσκονται τα Αγγλικά ως ξένη γλώσσα όσον αφορά τη μετακίνηση των wh- φράσεων, καθώς και εάν η μητρική τους γλώσσα προωθεί ή εμποδίζει την κατάκτηση του συγκεκριμένου συντακτικού φαινόμενου. Οι συμμετέχοντες στην έρευνα είναι πενήντα μαθητές δημοτικού σχολείου στην Ελλάδα. Τα συμπεράσματα της έρευνας δείχνουν πως οι μαθητές που έχουν ως μητρική γλώσσα τα Ελληνικά μαθαίνουν τα βασικά στοιχεία της μετακίνησης wh- φράσεων στην Αγγλική, και πως η πλειοψηφία των λαθών που παρατηρούνται σχετίζεται με τη γραμματική κλίση. Επιρροή από τη γνώση της ελληνικής γλώσσας- ως μητρική- παρατηρείται όσον αφορά τη σειρά των λέξεων στη σύνταξη, ενώ στις περισσότερες περιπτώσεις η επιρροή αυτή δε φαίνεται να εμποδίζει την κατάκτηση της μετακίνησης των WH- φράσεων σε γενικό επίπεδο.
description: The present study analyses the way in which wh- movement is realised in English and Greek interrogative sentences. Furthermore, the results of a study are reported, showing what Greek young learners of English as a foreign language have mastered regarding wh- movement and whether their native language inhibits or promotes learning at the specific area of syntax. The participants in the study were fifty students of a primary school in Greece. The results revealed that the major components of wh- movement in English are learnt by Greek learners and the majority of mistakes made were related to inflection. Influence from the Greek language was only observed as far as word order is concerned, while in most cases it did not seem to inhibit the learning of wh-movement in English.
Test of the reaction mechanism for gamma N -> K Lambda(1520) using the polarized photon
Creators: name: Nam, Seung-il
name: Choi, Ki-Seok
name: Hosaka, Atsushi
name: Kim, Hyun-Chul
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the reaction mechanism for the photoproduction of the Lambda(1520), based on an effective Lagrangian approach. We investigate each contribution of the s-, u-, t-channel processes and contact term, separately. One of the most characteristic features of this reaction is the contact-term dominance which governs the photoproduction from the proton, when the K*-exchange contribution is possibly not too large. We suggest several different ways of the polarizations and arrangement of the beam and target to make to understand the role of each contribution separately in future experiments.
description: 10 pages, 14 figures, accepted for publication in PRD
Measuring the W-t-b Interaction at the ILC
Creators: name: Batra, Puneet
name: Tait, Tim M. P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The large top quark mass suggests that the top plays a pivotal role in Electroweak symmetry-breaking dynamics and, as a result, may have modified couplings to Electroweak bosons. Hadron colliders can provide measurements of these couplings at the ~10% level, and one of the early expected triumphs of the International Linear Collider is to reduce these uncertainties to the per cent level. In this article, we propose the first direct measurement of the Standard Model W-t-b coupling at the ILC, from measurements of t tbar-like signals below the t tbar production threshold. We estimate that the ILC with 100 fb^{-1} can measure a combination of the coupling and top width to high precision, and when combined with a direct measurement of the top width from the above-threshold scan, results in a model-independent measurement of the W-t-b interaction of the order of ~ 3%.
Quantum data hiding with continuous variable systems
Creators: name: Lami, Ludovico
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Suppose we want to benchmark a quantum device held by a remote party, e.g. by testing its ability to carry out challenging quantum measurements outside of a free set of measurements $\mathcal{M}$. A very simple way to do so is to set up a binary state discrimination task that cannot be solved efficiently by means of free measurements. If one can find pairs of orthogonal states that become arbitrarily indistinguishable under measurements in $\mathcal{M}$, in the sense that the error probability in discrimination approaches that of a random guess, one says that there is data hiding against $\mathcal{M}$. Here we investigate data hiding in the context of continuous variable quantum systems. First, we look at the case where $\mathcal{M}=\mathrm{LOCC}$, the set of measurements implementable with local operations and classical communication. While previous studies have placed upper bounds on the maximum efficiency of data hiding in terms of the local dimension and are thus not applicable to continuous variable systems, we establish more general bounds that rely solely on the local mean photon number of the states employed. Along the way, we perform a rigorous quantitative analysis of the error introduced by the non-ideal Braunstein-Kimble quantum teleportation protocol, determining how much squeezing and local detection efficiency is needed in order to teleport an arbitrary multi-mode local state of known mean energy with a prescribed accuracy. Finally, following a seminal proposal by Sabapathy and Winter, we look at data hiding against Gaussian operations assisted by feed-forward of measurement outcomes, providing the first example of a relatively simple scheme that works with a single mode only.
description: 25 pages; v2 has a generally improved presentation and is close to the published version