cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Investigating primary classroom assessment practices in Greek state schools and foreign language centres: a case study
Creators: name: Βαΐτση, Ευδοξία Αποστόλου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Αξιολόγηση
Πρωτοβάθμια εκπαίδευση
Μικροί μαθητές
Assessment
Primary education
Young learners

description: Η παρούσα διατριβή παρουσιάζει τα ευρήματα μιας περιπτωσιολογικής μελέτης των πρακτικών αξιολόγησης που υιοθετούνται στις τάξεις των μικρών μαθητών της πρωτοβάθμιας εκπαίδευσης. Ειδικότερα, θεωρήθηκε σημαντικό να εξετασθεί εάν το περιβάλλον, όπου λαμβάνει χώρα η διδασκαλία, υπαγορεύει συγκεκριμένες πρακτικές. Έτσι, ερευνήθηκαν οι πρακτικές αξιολόγησης που εφαρμόζονται από Έλληνες καθηγητές της αγγλικής γλώσσας σε δημόσια δημοτικά σχολεία (PSSs) και κέντρα ξένων γλωσσών (FLCs) στην Ελλάδα. Συγκεκριμένα, εξετάστηκαν πρακτικές αξιολόγησης που εφαρμόζονται πιο συχνά από τους καθηγητές της αγγλικής γλώσσας, καθώς και σε τι βαθμό χρησιμοποιούνται διάφορα εργαλεία και ασκήσεις αξιολόγησης από τις δύο ομάδες εκπαιδευτικών. Τέλος, μεταξύ των συμμετεχόντων ερευνήθηκαν επίσης οι ενδεχόμενες διαφορές της χρήσης των πρακτικών αξιολόγησης σε μικρούς μαθητές
description: This thesis presents the findings of a case study investigating the assessment practices adopted in the young language learner (YLL) classroom. More particularly, it was considered important to examine whether the context that tuition takes place dictates particular practices. Thus in the Greek context, assessment practices applied by Greek EFL teachers in primary state schools (PSSs) and foreign language centres (FLCs) were investigated. Specifically, means of assessment most frequently used by the EFL teachers was examined, as well as to what extent a variety of assessment tools and tasks were used by these two groups of teachers. Finally, potential differences among the participants’ use of assessment practices in YLLs were also investigated.
$\R$-trees and laminations for free groups I: Algebraic laminations
Creators: name: Coulbois, Thierry
name: Hilion, Arnaud
name: Lustig, Martin
Publisher: name: arXiv
Year: 2006
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: (Primary) 20F65; (Secondary) 37B, 57M

description: This paper is the first of a sequence of three papers, where the concept of an $\mathbb R$-tree dual to a measured geodesic lamination in a hyperbolic surface is generalized to arbitrary $\mathbb R$-trees provided with a (very small) action of the free group $F_N$ of finite rank $N\geq 2$ by isometries. Three different definitions are given and they are proved to be equivalent. We also describe the topology and Out$(F_N)$-action on the space of laminations.
description: 19 pages
Additional file 11 of Genomic architecture of endogenous ichnoviruses reveals distinct evolutionary pathways leading to virus domestication in parasitic wasps
Creators: name: Legeai, Fabrice
name: Santos, Bernardo F.
name: Robin, Stéphanie
name: Bretaudeau, Anthony
name: Dikow, Rebecca B.
name: Lemaitre, Claire
name: Jouan, Véronique
name: Ravallec, Marc
name: Drezen, Jean-Michel
name: Tagu, Denis
name: Baudat, Frédéric
name: Gyapay, Gabor
name: Zhou, Xin
name: Liu, Shanlin
name: Webb, Bruce A.
name: Brady, Seán G.
name: Volkoff, Anne-Nathalie
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 11 Manual analysis of the DRJ regions containing an excision site. Alignments of Sanger-sequenced DRJ regions from integrated and circular forms of seven H. didymator IV segments containing a putative excision site.
THE ROLE OF NURSING CARE FOR BED SORE PATIENTS
Creators: name: Madiha.S. Almalayo,Khalil.A.Al-Rashdi, Fatimah.E.Khobrani, Asraa S.Yankusari4 , Salha D.Al-tubiti, Mrouj W.Mukhtar ,  Layla T. AL-mowald, Mardia R.AL-Takrooni, Hashemiah S. AL-Abdulaziz, Turkiah A.AL-Sulami,  Asia K.AL-Muwallad, Sharifah A.AL-Zahrani, , Mushari  F. Al-Harbi , Nada S. Al-Abdullaziz , Fares N.Al-Muqati  , Hana M.Al-Muwallad  , Raja I..Felemban, Ayat F.Sembilan , Shahad A. Felemban, Sharifa.Z.Al-harthi, Mustafa.I.Alghamdi, Ahmed.I.Alazhrani, Majed.A.Alharby,Shatha.A.Alzahrani , Hmeed.M.Alharbi, Majed.A.Altthamali
Publisher: name: Zenodo
Year: 2023

description: the aim of the current study is, The importance of nursing care for patients with bed sores, the reasons for the formation of bed sores in patients, the importance of moving patients with bed sores on the other hand. the questionnaire was created electronically via the Google Drive program, and then it was distributed via mobile phone on the social networking program (WhatsApp)? Using e-mail for all participants to respond to the questionnaire. 650 questionnaires were distributed to all mobile groups, and 600 questionnaires were received on the researcher’s e-mail. (The target group is residents of the Holy City of Mecca, aged 25-60 years).

Keywords: role of nursing care, bed sore patients
Superfluidity in Three-species Mixture of Fermi Gases across Feshbach Resonances
Creators: name: Zhai, Hui
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: In this letter a generalization of the BEC-BCS crossover theory to a multicomponent superfluid is presented by studying a three-species mixture of Fermi gas across two Feshbach resonances. At the BEC side of resonances, two kinds of molecules are stable which gives rise to a two-component Bose condensate. This two-component superfluid state can be experimentally identified from the radio-frequency spectroscopy, density profile and short noise measurements. As approaching the BCS side of resonances, the superfluidity will break down at some point and yield a first-order quantum phase transition to normal state, due to the mismatch of three Fermi surfaces. Phase separation instability will occur around the critical regime.
description: 4 pages, 3 figures, revised version
Volunteer recruitment and retention: a case study of the Vancouver Planned Parenthood Clinic
Creators: name: Parsons, Lisa A.
Publisher: name: University of British Columbia
Year: 2008

description: The purpose of this project is to conduct a detailed evaluation of the Vancouver Planned Parenthood clinic volunteer program. The primary focus of this study is volunteer recruitment and retention. The simplicity of individual perspectives commonly employed in volunteer theories and research is rejected in this research project. A multi-leveled sociological analysis stemming from an organizational behaviour framework is used as an alternative approach to broaden the scope of this case study. The five levels of analysis used to examine the volunteer program in this study are: 1) individual level of analysis, 2) group behaviour, 3) interpersonal and organizational processes, 4) organizational structure and job design, and 5) organizational environment. Multiple factors are discussed under each level of analysis. A triangulation of methods, comprised of interviews with volunteers, observational analysis, and document analysis, is used to provide a rich analysis of the volunteer program. Interpretations of the findings demonstrate that many factors beyond the individual level influence volunteer recruitment and retention. Results show that this particular volunteer program is operating below its maximum effectiveness, and that high volunteer turnover results in this atmosphere. Practical and theoretical implications of this case study are explored and recommendations are offered.
Partially Locked States in Coupled Oscillators due to Inhomogeneous Coupling
Creators: name: Ko, Tae-Wook
name: Ermentrout, Bard
Publisher: name: arXiv
Year: 2008
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: We investigate coupled identical phase oscillators with scale-free distribution of coupling strength. It is shown that partially locked states can occur due to the inhomogeneity in coupling and some properties of the coupling function. Various quantities of the partially locked states are computed through a self-consistency argument and the values show good agreement with simulation results.
description: 4 figures, 7 pages
Do gas clouds in narrow-line regions of Seyfert galaxies come from their nuclei?
Creators: name: Joh, Kazuma
name: Nagao, Tohru
name: Wada, Keiichi
name: Terao, Koki
name: Yamashita, Takuji
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The narrow-line region (NLR) consists of gas clouds ionized by the strong radiation from the active galactic nucleus (AGN), distributed in the spatial scale of AGN host galaxies. The strong emission lines from the NLR are useful to diagnose physical and chemical properties of the interstellar medium in AGN host galaxies. However, the origin of the NLR is unclear; the gas clouds in NLRs may be originally in the host and photoionized by the AGN radiation, or they may be transferred from the nucleus with AGN-driven outflows. For studying the origin of the NLR, we systematically investigate the gas density and velocity dispersion of NLR gas clouds using a large spectroscopic data set taken from the Sloan Digital Sky Survey. The [S II] emission-line flux ratio and [O III] velocity width of 9,571 type-2 Seyfert galaxies and 110,041 star-forming galaxies suggest that the gas density and velocity dispersion of NLR clouds in Seyfert galaxies (ne ~ 194 cm-3 and sigma([O III]) ~ 147 km s-1) are systematically larger than those of clouds in H II regions of star-forming galaxies (ne ~ 29 cm-3 and sigma([O III]) ~ 58 km s-1). Interestingly, the electron density and velocity dispersion of NLR gas clouds are larger for Seyfert galaxies with a higher [O III]/Hbeta flux ratio, i.e., with a more active AGN. We also investigate the spatially-resolved kinematics of ionized gas clouds using the Mapping Nearby Galaxies at the Apache Point Observatory (MaNGA) survey data for 90 Seyfert galaxies and 801 star-forming galaxies. We find that the velocity dispersion of NLR gas clouds in Seyfert galaxies is larger than that in star-forming galaxies at a fixed stellar mass, at both central and off-central regions. These results suggest that gas clouds in NLRs come from the nucleus, probably through AGN outflows.
description: 15 pages, 13 figures, 1 table. Accepted for publication in PASJ
Quaternionic Diffusion by a Potential Step
Creators: name: De Leo, Stefano
name: Ducati, Gisele C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In looking for qualitative differences between quaternionic and complex formulations of quantum physical theories, we provide a detailed discussion of the behavior of a wave packet in presence of a quaternionic time-independent potential step. In this paper, we restrict our attention to diffusion phenomena. For the group velocity of the wave packet moving in the potential region and for the reflection and transmission times, the study shows a striking difference between the complex and quaternionic formulations which could be matter of further theoretical discussions and could represent the starting point for a possible experimental investigation.
description: 10 pages, 1 figure
Additional file 7 of Genomic architecture of endogenous ichnoviruses reveals distinct evolutionary pathways leading to virus domestication in parasitic wasps
Creators: name: Legeai, Fabrice
name: Santos, Bernardo F.
name: Robin, Stéphanie
name: Bretaudeau, Anthony
name: Dikow, Rebecca B.
name: Lemaitre, Claire
name: Jouan, Véronique
name: Ravallec, Marc
name: Drezen, Jean-Michel
name: Tagu, Denis
name: Baudat, Frédéric
name: Gyapay, Gabor
name: Zhou, Xin
name: Liu, Shanlin
name: Webb, Bruce A.
name: Brady, Seán G.
name: Volkoff, Anne-Nathalie
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 7: Dispersion of the viral loci within ichneumonid genomes. Table S8. Distance (in bp) between two segments, a segment and an IVSPER or between two IVSPERs localized in the same scaffold. Figure S2. Graphical representation of the mean distance (in Kbp) between viral loci in H. didymator and C. sonorensis genomes. Data are given between 2 segments, between a segment and an IVSPER, and/or between 2 IVSPERs.
Additional file 8 of Genomic architecture of endogenous ichnoviruses reveals distinct evolutionary pathways leading to virus domestication in parasitic wasps
Creators: name: Legeai, Fabrice
name: Santos, Bernardo F.
name: Robin, Stéphanie
name: Bretaudeau, Anthony
name: Dikow, Rebecca B.
name: Lemaitre, Claire
name: Jouan, Véronique
name: Ravallec, Marc
name: Drezen, Jean-Michel
name: Tagu, Denis
name: Baudat, Frédéric
name: Gyapay, Gabor
name: Zhou, Xin
name: Liu, Shanlin
name: Webb, Bruce A.
name: Brady, Seán G.
name: Volkoff, Anne-Nathalie
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 8: Table S9. Transposable elements (TE) found in Hyposter didymator segments, IVSPERs and neighboring regions. The LOLA package [86] was used to assess if some particular TE were enriched close to viral circles or IVSPER. Genomics positions were enlarged to 10 kbp at each segments ends and sampled against 1000 other similar regions from the genome, then used it a random reference. LOLA identifies overlaps and calculates enrichment for each TE. For each pairwise comparison, a series of columns describe the results of the statistical test (pvalueLog: -log10(pvalue) from the fisher’s exact result; oddsRatio: result from the fisher’s exact test; q-value transformation to provide false discovery rate (FDR) scores automatically). Some TE are enriched around viral locations, but after FDR correction, nothing was significant.
Practical scheme for quantum dense coding between three parties using microwave radiation in trapped ions
Creators: name: Yang, Wen-Xing
name: Gong, Zhe-Xuan
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a practical scheme for implementing two-dimension quantum dense coding (QDC) between three parties through manipulating three ions confined in microtraps addressed by microwaves and assisted by a magnetic field gradient. The ions in our scheme are not required to be strictly cooled to the vibrational ground state because single-qubit and multi-qubit operations are made via Ising terms, in which the vibrational modes of the ions remain unchanged throughout the scheme, rendering our scheme robust to the heating of the ions. We also present the detailed steps and parameters for implementing the three-party QDC experimentally and show that the proposed scheme is within the current techniques of ion-trap experiments.
description: 6 pages, 2 figures, accepted by J. Phys. B: At. Mol. Opt. Phys
The Diverse Properties of the Most Ultraviolet Luminous Galaxies Discovered by the Galaxy Evolution Explorer
Creators: name: Hoopes, Charles G.
name: Heckman, Timothy M.
name: Salim, Samir
name: Seibert, Mark
name: Tremonti, Christy A.
name: Schiminovich, David
name: Rich, R. Michael
name: Martin, D. Christopher
name: Charlot, Stephane
name: Kauffmann, Guinevere
name: Forster, Karl
name: Friedman, Peter G.
name: Morrissey, Patrick
name: Neff, Susan G.
name: Small, Todd
name: Wyder, Ted K.
name: Bianchi, Luciana
name: Donas, Jose
name: Lee, Young-Wook
name: Madore, Barry F.
name: Milliard, Bruno
name: Szalay, Alex S.
name: Welsh, Barry Y.
name: Yi, Sukyoung K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on the properties of a sample of ultraviolet luminous galaxies (UVLGs) selected by matching the Galaxy Evolution Explorer (GALEX) Surveys with the Sloan Digital Sky Survey Third Data Release. Out of 25362 galaxies between 0.02x10^10 L_solar at 1530 Angstroms (observed wavelength). The properties of this population are well correlated with ultraviolet surface brightness. We find that the galaxies with low UV surface brightness are primarily large spiral systems with a mixture of old and young stellar populations, while the high surface brightness galaxies consist primarily of compact starburst systems. In terms of the behavior of surface brightness with luminosity, size with luminosity, the mass-metallicity relation, and other parameters, the compact UVLGs clearly depart from the trends established by the full sample of galaxies. The subset of compact UVLGs with the highest surface brightness (``supercompact UVLGs'') have characteristics that are remarkably similar to Lyman Break Galaxies at higher redshift. They are much more luminous than typical local ultraviolet-bright starburst galaxies and blue compact dwarf galaxies. They have metallicities that are systematically lower than normal galaxies of the same stellar mass, indicating that they are less chemically evolved. In all these respects, they are the best local analogs for Lyman Break Galaxies.
description: Fixed error in ObjID column of Table 1. 30 pages, 12 figures. Accepted for the GALEX special issue of ApJS. Abstract abridged
PIC Simulation of Double Plasma Resonance and Zebra Pattern of Solar Radio Bursts
Creators: name: Li, Chuanyang
name: Chen, Yao
name: Ni, Sulan
name: Tan, Baolin
name: Ning, Hao
name: Zhang, Zilong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Latest study reports that plasma emission can be generated by energetic electrons of DGH distribution via the electron cyclotron maser instability (ECMI) in plasmas characterized by a large ratio of plasma oscillation frequency to electron gyro-frequency ($ω_{pe}/Ω_{ce}$). In this study, on the basis of the ECMI-plasma emission mechanism, we examine the double plasma resonance (DPR) effect and the corresponding plasma emission at both harmonic (H) and fundamental (F) bands using PIC simulations with various $ω_{pe}/Ω_{ce}$. This allows us to directly simulate the feature of zebra pattern (ZP) observed in solar radio bursts for the first time. We find that (1) the simulations reproduce the DPR effect nicely for the upper hybrid (UH) and Z modes, as seen from their variation of intensity and linear growth rate with $ω_{pe}/Ω_{ce}$, (2) the intensity of the H emission is stronger than that of the F emission by $\sim$ 2 orders of magnitude and vary periodically with increasing $ω_{pe}/Ω_{ce}$, while the F emission is too weak to be significant, therefore we suggest that it is the H emission accounting for solar ZPs, (3) the peak-valley contrast of the total intensity of H is $\sim 4$, and the peak lies around integer values of $ω_{pe}/Ω_{ce}$ (= 10 and 11) for the present parameter setup. We also evaluate the effect of energy of energetic electrons on the characteristics of ECMI-excited waves and plasma radiation. The study provides novel insight on the physical origin of ZPs of solar radio bursts.
Additional file 4 of A high-throughput drug combination screen identifies an anti-glioma synergism between TH588 and PI3K inhibitors
Creators: name: Chen, Zhen
name: Chen, Chao
name: Zhou, Tingting
name: Duan, Chao
name: Wang, Qianqian
name: Zhou, Xiaohui
name: Zhang, Xia
name: Wu, Fangrong
name: Hua, Yunfen
name: Lin, Fan
Publisher: name: figshare
Year: 2020
Subjects: Biochemistry
Medicine
Molecular Biology
Pharmacology
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Cancer
Virology

description: Additional file 4: Figure S4. Flow cytometric analysis of apoptotic cells upon treatment of TH588 and/or BKM120. Left: H460 cells were treated with vehicle (DMSO), BKM120, TH588 or combination of both for 24 h and analyzed by flow cytometry for quantification of the fraction of apoptotic cells (pre-stained with annexin V/PI). Right: Quantification of apoptotic fraction of H460 cells received each type of treatment in triplicates.
Deep Neural Networks based Invisible Steganography for Audio-into-Image Algorithm
Creators: name: Huu, Quang Pham
name: Dinh, Thoi Hoang
name: Tran, Ngoc N.
name: Van, Toan Pham
name: Minh, Thanh Ta
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In the last few years, steganography has attracted increasing attention from a large number of researchers since its applications are expanding further than just the field of information security. The most traditional method is based on digital signal processing, such as least significant bit encoding. Recently, there have been some new approaches employing deep learning to address the problem of steganography. However, most of the existing approaches are designed for image-in-image steganography. In this paper, the use of deep learning techniques to hide secret audio into the digital images is proposed. We employ a joint deep neural network architecture consisting of two sub-models: the first network hides the secret audio into an image, and the second one is responsible for decoding the image to obtain the original audio. Extensive experiments are conducted with a set of 24K images and the VIVOS Corpus audio dataset. Through experimental results, it can be seen that our method is more effective than traditional approaches. The integrity of both image and audio is well preserved, while the maximum length of the hidden audio is significantly improved.
description: Published in 2019 IEEE 8th Global Conference on Consumer Electronics (GCCE)
Reduced Fine-Tuning in Supersymmetry with R-parity violation
Creators: name: Carpenter, Linda M.
name: Kaplan, David E.
name: Rhee, Eun-Jung
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Both electroweak precision measurements and simple supersymmetric extensions of the standard model prefer a mass of the Higgs boson less than the experimental lower limit of 114 GeV. We show that supersymmetric models with R parity violation and baryon number violation have a significant range of parameter space in which the Higgs dominantly decays to six jets. These decays are much more weakly constrained by current LEP analyses and would allow for a Higgs mass near that of the $Z$. In general, lighter scalar quark and other superpartner masses are allowed and the fine-tuning typically required to generate the measured scale of electroweak symmetry breaking is ameliorated. The Higgs would potentially be discovered at hadron colliders via the appearance of new displaced vertices. The lightest neutralino could be discovered by a scan of vertex-less events LEP I data.
description: 5 pages, 2 figures. Significant detail added to the arguments regarding LEP limits - made more quantitative. Better figures used, plotting more physical quantities. Typos corrected and references updated. Conclusions unchanged
Η συνεργατική μέθοδος και η λειτουργία του χώρου σ’ένα πολυπολιτισμικό περιβάλλον μάθησης νηπιαγωγείου
Creators: name: Δαδουλίδου, Παρασκευή Αδαμαντίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Συνεργατική μέθοδος
Λειτουργία του χώρου
Πολυπολιτισμικό περιβάλλον
The collaborative method
The operation of space
A multicultural environment

description: Σκοπός της συγκεκριμένης διατριβής είναι η μελέτη της συνεργατικής μεθόδου πρώτον, σε σχέση με μια πολυπολιτισμική τάξη νηπιαγωγείου και δεύτερον, σε σχέση με το χώρο και τα χαρακτηριστικά που θα πρέπει αυτός να φέρει. Στο πρώτο κεφάλαιο της εργασίας, γίνεται μια αναλυτική μελέτη για τα χαρακτηριστικά και τις αρχές της συνεργατικής μεθόδου, καθώς επίσης και για τη στάση που οφείλει να έχει ο εκπαιδευτικός, σε συνάρτηση φυσικά με την πολυπολιτισμικότητα. Στο δεύτερο κεφάλαιο παρουσιάζονται οι αρχές και οι προϋποθέσεις που θα πρέπει να πληροί ο χώρος, σε μια πολυπολιτισμική συνεργατική τάξη. Στο τρίτο και τελευταίο κεφάλαιο της εργασίας, παρουσιάζεται η πραγματοποιηθείσα έρευνα με τη χρήση ερωτηματολογίων. Μέσα από την έρευνα διερευνάται η στάση των εκπαιδευτικών μέσα σε μια συνεργατική πολυπολιτισμική τάξη, όπως επίσης και οι μέθοδοι που χρησιμοποιούνται κατά την εκπαιδευτική διαδικασία.
description: The present doctoral research aims at examining the collaborative method firstly, regarding the multicultural kindergarten and secondly, in relation to the space and features that such environments should uphold. In the first chapter we explore the characteristics and the core principles of the collaborative method and we undertake a detailed study of the teacher’s attitude towards the multicultural class. The second chapter studies the principals and the conditions that the space itself requires in terms of a multicultural collaborative class. The third and last chapter of the study presents the realised research conducted by questionnaires. The research seeks to reveal the teachers’ attitude within the frame of a collaborative multicultural class, and at the same time point out the methods used during their educational process.
description: Συνεργαζόμενα Τμήματα Πανεπιστήμιο Λε Μαν (Maine France, Γαλλία)
Magnetic Fields and Rotations of Protostars
Creators: name: Machida, Masahiro N.
name: Inutsuka, Shu-ichiro
name: Matsumoto, Tomoaki
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The evolution of the magnetic field and angular momentum in the collapsing cloud core is studied using three-dimensional resistive MHD nested grid simulations. Starting with a Bonnor-Ebert isothermal cloud rotating in a uniform magnetic field, we calculate the cloud evolution from the molecular cloud core (n=10^4 cm^-3) to the stellar core (n \simeq 10^22 cm^-3). The magnetic field strengths at the center of the clouds converge to a certain value as the clouds collapse, when the clouds have the same angular momenta but different strengths of the magnetic fields at the initial state. For 10^12 cm^-3 < n < 10^16 cm^-3, Ohmic dissipation considerably removes the magnetic field from the collapsing cloud core, and the magnetic field lines, which are strongly twisted for n <10^12 cm^-3, is de-collimated. The magnetic field lines are twisted and amplified again for nc > 10^16 cm^-3, because the magnetic field is recoupled with the warm gas. Finally, protostars at their formation epoch have 0.1-1kG of the magnetic fields, which are comparable to observations. The magnetic field strength of protostar slightly depends on the angular momentum of the host cloud. The protostar formed from the slowly rotating cloud core has a stronger magnetic field. The evolution of the angular momentum is closely related to the evolution of the magnetic field. The angular momentum in the collapsing cloud is removed by the magnetic effect. The formed protostars have 0.1-2 days of the rotation period at their formation epoch, which are slightly shorter than the observation. This indicates that the further removal mechanism of the angular momentum such as interaction between the protostar and disk, wind gas or jet is important in further evolution of the protostar.
description: 39 pages,11 figures, Submitted to ApJ, For high resolution figures see http://www2.scphys.kyoto-u.ac.jp/~machidam/protostar/proto/ms.pdf
Excitonic Bound State in the Extended Anderson Model with c-f Coulomb Interaction
Creators: name: Otsuki, Junya
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The Anderson model with the Coulomb interaction between the local and conduction electrons is studied in the semiconducting phase. Based on a perturbation theory from the atomic limit, leading contributions for the c-f Coulomb interaction are incorporated as a vertex correction to hybridization. An analytical solution shows that the effective attraction in the intermediate states leads to a bound state localized at the local electron site. Self-consistent equations are constructed as an extension of the non-crossing approximation (NCA) to include the vertex part yielding the bound state. A numerical calculation demonstrates the excitonic bound state inside the semiconducting gap for single-particle excitations, and a discontinuity at the gap edge for magnetic excitations.
description: 15 pages, 20 figures, submitted to J. Phys. Soc. Jpn
Critical Effect of Bottom Electrode on Ferroelectricity of Epitaxial Hf0.5Zr0.5O2 Thin Films
Creators: name: Estandia, Saul
name: Gazquez, Jaume
name: Varela, Maria
name: Dix, Nico
name: Qian, Mengdi
name: Solanas, Raul
name: Fina, Ignasi
name: Sanchez, Florencio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Epitaxial orthorhombic Hf0.5Zr0.5O2 (HZO) films on La0.67Sr0.33MnO3 (LSMO) electrodes show robust ferroelectricity, with high polarization, endurance and retention. However, no similar results have been achieved using other perovskite electrodes so far. Here, LSMO and other perovskite electrodes are compared. A small amount of orthorhombic phase and low polarization is found in HZO films grown on La-doped BaSnO3 and Nb-doped SrTiO3, while null amounts of orthorhombic phase and polarization are detected in films on LaNiO3 and SrRuO3. The critical effect of the electrode on the stabilized phases is not consequence of differences in the electrode lattice parameter. The interface is critical, and engineering the HZO bottom interface on just a few monolayers of LSMO permits the stabilization of the orthorhombic phase. Furthermore, while the specific divalent ion (Sr or Ca) in the manganite is not relevant, reducing the La content causes a severe reduction of the amount of orthorhombic phase and the ferroelectric polarization in the HZO film.
description: Open access, published (2021) in Journal of Materials Chemistry C
Ο πολιτισμός και η γλώσσα του σπιτιού γέφυρα μάθησης στο νηπιαγωγείο
Creators: name: Γαβριηλίδου, Χρυσούλα Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Εκπαίδευση Ρομά
Πολιτισμικά κατάλληλη θεωρία
Ενταξιακή εκπαίδευση
Συνεργασία σχολείου-οικογένειας
Education of Roma children
Culturally relevant theory
Inclusive education
School-family collaboration

description: Η εργασία διερευνά τις προοπτικές εφαρμογής της ενταξιακής και πολιτισμικά κατάλληλης εκπαίδευσης σε ένα νηπιαγωγείο με μαθητικό πληθυσμό παιδιά Ρομά. Στο πλαίσιο αυτό, αναδεικνύεται η σπουδαιότητα της συνεργασίας με το σπίτι, ιδιαίτερα με τις μητέρες των νηπίων, και υποστηρίζεται η αναγκαιότητα διαπραγμάτευσης των τρόπων εμπλοκής των μητέρων μέσα από τη διερεύνηση των προσδοκιών και των προτάσεων των ίδιων. Οι μητέρες ενθαρρύνθηκαν να συμμετέχουν σε δράσεις που δε σχετίζονταν με τη συνηθισμένη εμπλοκή τους στην εκπαίδευση των παιδιών τους, στις οποίες θεώρησαν ότι μπορούσαν να συνεισφέρουν. Η εφαρμογή του συγκεκριμένου προγράμματος και η συνεργασία με τις μητέρες των νηπίων είχε ως αποτέλεσμα την αύξηση του ποσοστού φοίτησης των παιδιών. Επίσης, διαπιστώθηκε πως ανάλογη με τις προσωπικές σχολικές εμπειρίες των μητέρων ήταν και η σχέση τους με το σχολείο ως μητέρες. Πολύ μικρό ποσοστό των μητέρων δεν ανταποκρίθηκε στην πρόσκληση για ουσιαστική επαφή με το νηπιαγωγείο, όχι τόσο σε επίπεδο φοίτησης των παιδιών τους, αλλά κυρίως σε επίπεδο προσωπικής εμπλοκής. Ένα από τα σημαντικά ευρήματα της έρευνας είναι οι μεγάλες προσδοκίες των μητέρων για την εκπαίδευση των παιδιών τους: εκφράζουν σαφώς την επιθυμία για ολοκλήρωση των σπουδών των παιδιών τους και την συνδέουν άμεσα με την επαγγελματική και κοινωνική τους ανέλιξη.
description: This paper examines the prospects of implementing inclusive and culturally relevant teaching in a kindergarten with exclusively Roma student population. The paper highlights the importance of school-home cooperation, especially with the students’ mothers, and supports the need for negotiation of the mothers’ sort of engagement through the investigation of their own expectations and suggestions. Mothers were encouraged to participate in activities that were not typical of their usual engagement in their children’s education, which they expected they could manage. The implementation of the specific program as well as the cooperation with the mothers resulted in the increase of the students’ attendance rate. Furthermore, it was found that the mothers’ personal experiences from school reflected their current relationship with their children’s school. There was a very small percentage of the mothers that did not respond to the school’s invitation for substantial connection, not so much regarding their children’s school attendance but, mainly, regarding their personal engagement. One of the most important findings of our research was the mothers’ great expectations: they clearly expressed their wish for their children to complete their schooling, which they associated with the children’s professional and social advancement.
High Energy Spin Excitations in Electron-Doped Superconducting Pr$_{0.88}$LaCe$_{0.12}$CuO$_{4-δ}$ with $T_c=21$ K
Creators: name: Wilson, Stephen D.
name: Li, Shiliang
name: Woo, H.
name: Dai, Pengcheng
name: Mook, H. A.
name: Frost, C. D.
name: Komiya, Seiki
name: Ando, Yoichi
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We use high-resolution inelastic neutron scattering to study the low-temperature magnetic excitations of electron-doped superconducting Pr$_{0.88}$LaCe$_{0.12}$CuO$_{4-δ}$ ($T_c=21\pm 1$ K) over a wide energy range (4 meV$\le\hbarω\le 330$ meV). The effect of electron-doping is to cause a wave vector ($Q$) broadening in the low-energy ($\hbarω\le 80$ meV) commensurate spin fluctuations at ($π$,$π$) and to suppress the intensity of spin-wave-like excitations at high energies ($\hbarω\ge 100$ meV). This leads to a substantial redistribution in the spectrum of the local dynamical spin susceptibility $χ^{\prime\prime}(ω)$, and reveals a new energy scale similar to that of the lightly hole-doped YB$_2$Cu$_3$O$_{6.353}$ ($T_c=18$ K).
description: 4 figures and 4 pages. Accepted by Phys. Rev. Lett.; Published April 18th, 2006
The ethics of animal experimentation: the Littlewood report
Creators: name: Pittalwala, Raheema
Publisher: name: University of British Columbia
Year: 2008

description: The Littlewood Committee's defence of a laissez-faire approach to animal experimentation is ethically indefensible on grounds that non-human animals are sentient, autonomous beings who express an acute interest in their continued existence and demonstrate an aversion to the frustration of their interests; as such, non-human animals can be considered moral subjects. The defenders of the rationalist tradition discount the moral significance of welfare interests and therefore cannot satisfactorily explain our moral obligations to either non-rational humanity nor to the non-human animal, who both lack ac ontra-causal free will. Though the moral significance of our prereflective capacities establishes that there can be no equality of interests between the human and the non-human animal, an animal's will to live nevertheless precludes the compromise of its vital interests in other than exceptional cases in which the interests of the beneficiaries of animal research are mortally threatened and no alternatives to the animal model exist. A modified account of the interest theory of rights which emphasizes both the elements of will and interest not only satisfactorily explains our legal obligation to nonrational humanity, but also underlines the plausibility of extending the fundamental right to life and the right not to be harmed to non-experimentation which embodies both deontological and utilitarian principles is required and offers the best means for an objective evaluation of an experimental protocol, the ethical propriety of which is often obstructed by a strong presumptive case in favour of the researcher and by certain incoherent ideological commitments of the scientific and medical research establishment which claim that science is 'value-free' and that knowledge is an absolute value.
Fermionic decays of NMSSM Higgs bosons under LHC 13 TeV constraints
Creators: name: Telba, Marwa
name: Binjonaid, Maien
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: This paper investigates the impact of the recent LHC constraints on the Higgs sector in the semi-constrained version of the Next-to-Minimal Supersymmetric Standard Model. Our analysis focuses on the parameter space for which the value of the Higgs doublet-singlet coupling, $λ$, is large as possible, while the ratio between the vacuum expectation values of the two Higgs doublets, $\tanβ$, is small as possible. Under the current constraints, we present the possible fermionic decay channels and reduced cross-section into fermions final states for the lightest neutral Higgs bosons in the NMSSM, $(h_{1}$, $h_{2}$, and $a_{1})$. We found that the branching ratios of the non SM-like Higgs ($a_{1}$ and $h_{2}$) into a pair of bottom quarks are near 90\% level when the Higgs mass below 400 GeV. Moreover, the branching ratio of $h_{2}/a_{1}\rightarrow t\bar{t}$ can reach unity for all mass ranges when these bosons are mostly singlet.
description: 7 pages, 5 figures
Exact solutions to the focusing nonlinear Schrodinger equation
Creators: name: Aktosun, Tuncay
name: Demontis, Francesco
name: van der Mee, Cornelis
Publisher: name: arXiv
Year: 2007
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A method is given to construct globally analytic (in space and time) exact solutions to the focusing cubic nonlinear Schrodinger equation on the line. An explicit formula and its equivalents are presented to express such exact solutions in a compact form in terms of matrix exponentials. Such exact solutions can alternatively be written explicitly as algebraic combinations of exponential, trigonometric, and polynomial functions of the spatial and temporal coordinates.
description: 60 pages, 18 figures
QSO photometric redshifts using machine learning and neural networks
Creators: name: Curran, S. J.
name: Moss, J. P.
name: Perrott, Y. C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The scientific value of the next generation of large continuum surveys would be greatly increased if the redshifts of the newly detected sources could be rapidly and reliably estimated. Given the observational expense of obtaining spectroscopic redshifts for the large number of new detections expected, there has been substantial recent work on using machine learning techniques to obtain photometric redshifts. Here we compare the accuracy of the predicted photometric redshifts obtained from Deep Learning(DL) with the k-Nearest Neighbour (kNN) and the Decision Tree Regression (DTR) algorithms. We find using a combination of near-infrared, visible and ultraviolet magnitudes, trained upon a sample of SDSS QSOs, that the kNN and DL algorithms produce the best self-validation result with a standard deviation of σ = 0.24. Testing on various sub-samples, we find that the DL algorithm generally has lower values of σ, in addition to exhibiting a better performance in other measures. Our DL method, which uses an easy to implement off-the-shelf algorithm with no filtering nor removal of outliers, performs similarly to other, more complex, algorithms, resulting in an accuracy of Δz < 0.1$ up to z ~ 2.5. Applying the DL algorithm trained on our 70,000 strong sample to other independent (radio-selected) datasets, we find σ < 0.36 over a wide range of radio flux densities. This indicates much potential in using this method to determine photometric redshifts of quasars detected with the Square Kilometre Array.
description: Accepted by MNRAS
Size-dependent effects on electrical contacts to nanotubes and nanowires
Creators: name: Leonard, F.
name: Talin, A. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Metal-semiconductor contacts play a key role in electronics. Here we show that for quasi-one dimensional (Q1D) structures such as nanotubes and nanowires, side contact with the metal only leads to weak band realignment, in contrast with bulk metal-semiconductor contacts. Schottky barriers are much reduced compared with the bulk limit, and should facilitate the formation of good contacts. However, the conventional strategy of heavily doping the semiconductor to obtain Ohmic contacts breaks down as the nanowire diameter is reduced. The issue of Fermi level pinning is also discussed, and it is demonstrated that the unique density of states of Q1D structures makes them less sensitive to this effect. Our results agree with recent experimental work, and should apply to a broad range of Q1D materials.
description: Physical Review Letters 97, 026804 (2006)
Threshold Effects in Multi-channel Coupling and Spectroscopic Factors in Exotic Nuclei
Creators: name: Michel, N.
name: Nazarewicz, W.
name: Ploszajczak, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In the threshold region, the cross section and the associated overlap integral obey the Wigner threshold law that results in the Wigner-cusp phenomenon. Due to flux conservation, a cusp anomaly in one channel manifests itself in other open channels, even if their respective thresholds appear at a different energy. The shape of a threshold cusp depends on the orbital angular momentum of a scattered particle; hence, studies of Wigner anomalies in weakly bound nuclei with several low-lying thresholds can provide valuable spectroscopic information. In this work, we investigate the threshold behavior of spectroscopic factors in neutron-rich drip-line nuclei using the Gamow Shell Model, which takes into account many-body correlations and the continuum effects. The presence of threshold anomalies is demonstrated and the implications for spectroscopic factors are discussed.
description: Accepted in Physical Review C Figure corrected
Voltage control of skyrmions: creation, annihilation and zero-magnetic field stablization
Creators: name: Zhou, Yifan
name: Mansell, Rhodri
name: van Dijken, Sebastiaan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Voltage manipulation of skyrmions is a promising path towards low-energy spintronic devices. Here, voltage effects on skyrmions in a GdOx/Gd/Co/Pt heterostructure are observed experimentally. The results show that the skyrmion density can be both enhanced and depleted by the application of an electric field, along with the ability, at certain magnetic fields to completely switch the skyrmion state on and off. Further, a zero magnetic field skyrmion state can be stablized under a negative bias voltage using a defined voltage and magnetic field sequence. The voltage effects measured here occur on a few-second timescale, suggesting an origin in voltage-controlled magnetic anisotropy rather than ionic effects. By investigating the skyrmion nucleation rate as a function of temperature, we extract the energy barrier to skyrmion nucleation in our sample. Further, micromagnetic simulations are used to explore the effect of changing the anisotropy and Dzyaloshinskii-Moriya interaction on skyrmion density. Our work demonstrates the control of skyrmions by voltages, showing functionalities desirable for commercial devices.
description: 5 pages, 5 figures
Ποιμαντική φροντίδα για παιδιά με χρόνια νοσήματα
Creators: name: Asfoura, Rand Fuad
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Χρόνια νοσήματα
Ποιμαντική παρηγορητική φροντίδα
Καρκίνος
Chronic diseases
Pastoral palliative care
Cancer

description: Σκοπός της παρούσας εργασίας είναι να παρουσιάσει τις διάφορες ανάγκες των παιδιών με ειδικές ανάγκες και των παιδιών με καρκίνο και των οικογενειών τους και στη συνέχεια να κάνει προτάσεις για διάφορες ποιμαντικές δραστηριότητες από την πλευρά της Εκκλησίας ώστε να εκπληρώσει η Εκκλησία τον σπουδαίο και αναγκαίο ρόλο της στην φροντίδα αυτών των παιδιών. Στο πρώτο κεφάλαιο παρουσιάσαμε μια θεολογική προσέγγιση στην οποία φανερώσαμε ότι ο Θεός δεν είναι η αιτία του πόνου, του θανάτου και της αρρώστιας αλλά αυτά τα γεγονότα είναι συνέπειες της πτώσης του ανθρώπου. Ο Θεός τα παραχωρεί και δίνει την ευκαιρία στον άνθρωπο να τα μετατρέψει σε σωτήρια γεγονότα. Στο δεύτερο κεφάλαιο ασχοληθήκαμε με τις ανάγκες των παιδιών με ειδικές ανάγκες και προτείναμε την δημιουργία Γραφείου Υποστήριξης και Συμβουλευτικής που θα αποτελεί σημείο αναφοράς για τους γονείς και θα τους προσφέρει βοήθεια σε πνευματικό και πρακτικό επίπεδο. Στο τρίτο κεφάλαιο μελετήσαμε το θέμα των καρκινοπαθών παιδιών και προτείναμε την ίδρυση ενός Κέντρου Ανακουφιστικής Παιδιατρικής Φροντίδας μέσω του οποίου θα παρέχεται μια ολική περίθαλψη, σωματική και πνευματική, αλλά και συλλογική δηλαδή και στο παιδί και στα άλλα μέλη της οικογένειάς του, στα διάφορα στάδια της αρρώστιας, ακόμα και στην περίοδο του πένθους αν τελικά πεθάνει το παιδί. Όταν η Εκκλησία δημιουργεί Γραφεία και Κέντρα Υποστήριξης και επιτυγχάνει να τα κάνει κοινότητες αγάπης τότε γίνονται αληθινά θεραπευτήρια.
description: The purpose of this thesis is to present the different needs of children with special needs and children with cancer and their families, and then to make suggestions for various pastoral activities on the part of the Church to fulfill her important and necessary role in the care of these children. In the first chapter we presented a theological approach which revealed that God is not the cause of pain, death and disease but they are consequences of the fall of man. God permit these events and gives to the man the opportunity to transform them into lifesaving events. In the second chapter we dealt with the needs of children with special needs and proposed the creation of an Office for Support and Counseling that will be a reference point for parents and will offer them help in spiritual and practical level. In the third chapter we studied the issue of children with cancer and proposed the establishment of a Centre for Pediatric Palliative Care through which a total care will be provided, physical and spiritual care, and not only for the child but for the other family members at different stages of illness, even in the period of mourning if the child dies. When the Church raises Offices and Support Centers and achieves to make them communities of love, then they will be real hospitals.