cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Φεμινισμός και Εκπαίδευση : Η περίπτωση της εφημερίδος των κυριών:
Creators: name: Παππά, Χριστίνα Παναγιώτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Φεμινισμός
Εκπαίδευση
Εφημερίδα των κυριών
Feminism
Education
Efymerida ton kyrion

description: Οι γυναίκες στην ελληνική κοινωνία ήταν σχεδόν αόρατες. Από το 1821-1920 δεν μπορούσαν και δεν είχαν την δυνατότητα να έχουν πρόσβαση στην εκπαίδευση όπως οι άντρες. Οι περισσότερες από αυτές ήταν κλεισμένες στο σπίτι φροντίζοντας την οικογένεια τους και μόνο. Αυτό ήταν το γυναικείο καθήκον τους. Για τις γυναίκες τα μόνα αποδεκτά επαγγέλματα στα οποία μπορούσαν να εργαστούν ήταν εκείνο της νοικοκυράς, της δασκάλας και της νοσοκόμας. Όλα τα άλλα επαγγέλματα ήταν απαγορευμένα και ακατάλληλα για αυτές. Για αυτό τον λόγο οι γυναίκες δεν εκπαιδεύονταν όπως οι άντρες. Το διάβασμα, η γραφή και τα μαθηματικά ήταν αρκετά για τις γυναίκες. Στην παρούσα εργασία θα δούμε το πρώτο γυναικείο φεμινιστικό έντυπο, το οποίο εκδίδονταν από την Καλλιρρόη Παρρέν, η οποία με την δράση της βοήθησε τις γυναίκες να αλλάξουν την κατάσταση που βίωναν. Η Καλλιρρόη Παρρέν ήταν η πρώτη φεμινίστρια που διεκδίκησε τα δικαιώματα των γυναικών στην εκπαίδευση και την εργασία. Δημιούργησε μια δημόσια σφαίρα στην οποία οι γυναίκες είχαν πρόσβαση και ένιωθαν ισότιμοι πολίτες. Ο φεμινισμός είναι ένα εξίσου σημαντικό κεφάλαιο και χωρίζεται σε δυο περιόδους. Η πρώτη ξεκινά το 1887-1917. Αυτή την περίοδο σημαντικό ρόλο θα έχει η Καλλιρρόη Παρρέν και η εφημερίδα των κυριών. Η δεύτερη περίοδος ξεκινά από το 1920 . Από εδώ και πέρα τα φεμινιστικά έντυπα αναλαμβάνουν την διεκδίκηση των γυναικείων αιτημάτων στην εργασία και την εκπαίδευση.
description: Women in Greek community had an invisible role. From 1821-1920 they could not have access in education as men. Most of them were closed at home taking care of the house and the family. This was women’s duty. For women the only accepted occupation was housekeeper, teacher and nurse. All the other occupations were inappropriate for them. This was the reason why women didn’t get education as men. Reading, writing and maths were enough for a woman. In this paper we will see how the first Greek feminist newspaper, which was edited by KallirroiParren, helped women to see that this situation can change. Women in other countries in the same period have more rights than women in Greek. KallirroiParren was the first feminist, who assert women’s rights in education and work. She developed public activities for women and managed to qualify women as active citizens. Feminism is an important chapter and has two periods. The first begins 1887-1917. In this period a very important role has KallirroiParren and efymerida ton kyrion. The second period begins in 1920. The woman press from now on will assert the women rights in education and work.
UN’EPIGRAFE CAPENATE NEL CENOBIO DI S. PAOLO A ROMA
Creators: name: Redaelli, Davide
Publisher: name: ACME
Year: 2014

description: Un’epigrafe funeraria di un veterano pretoriano è conservata nel Lapidarium del monastero di San Paolo, ubicato lungo la via Ostiense. Nel 1972 questa epigrafe fu pubblicata in un articolo come inedita. In realtà, Bormann, nell’XI volume del CIL, aveva curato la sua pubblicazione, inserendola tra le epigrafi provenienti da Capena. La corrispondenza delle due edizioni è stata riscontrata solo da Filippi nel 1998. Gli altri autori non hanno riconosciuto questa identità, attribuendo il locus inventionis dell’iscrizione a Roma. Molte altre epigrafi provenienti da Capena si trovano nel monastero di San Paolo, poiché i monaci erano i proprietari del sito dell’antica Capena, e hanno promosso i primi scavi archeologici nell’antica città, in cambio di una parte dei reperti archeologici rinvenuti. La formazione del Lapidarium è il risultato della concentrazione delle iscrizioni provenienti dalle vaste proprietà del monastero e dalla basilica. Infine, lo studio si concentra sulla datazione dell’epigrafe del veterano.
description: ACME, Vol 67, No 1 (2014)
Non-Fermi liquid regime in metallic pyrochlore iridates: Quantum Griffiths singularities
Creators: name: Ghosh, Bikash
name: Dwivedi, Vinod Kumar
name: Mukhopadhyay, Soumik
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the interplay of Kondo and RKKY coupling in presence of disorder by chemically substituting local moment Cr^{3+} at the Ir sublattice in the metallic Pr_{2}Ir_{2}O_{7}. We find evidence of non-Fermi liquid (NFL) behaviour in the transport and thermodynamic measurements at low temperature. Specifically, the magnetic susceptibility exhibits power law divergence at T=0. The nonanalytic temperature and magnetic-field dependence of magnetic susceptibility and the associated scaling suggest existence of a two-fluid system consisting of Kondo-screened paramagnetic metal coexisting with magnetically ordered rare regions dominated by inter-impurity interaction, similar to quantum critical Griffiths phase.
description: 7 pages and 4 figs
TÓPICOS DE LOS PRÓLOGOS EN LAS CARTAS INTRODUCTORIAS A LAS ETYMOLOGIAE DE ISIDORO DE SEVILLA
Creators: name: Miguel Franco, Ruth
Publisher: name: ACME
Year: 2014

description: Isidoro de Sevilla († 636) y Braulio de Zaragoza († 651) intercambiaron varias cartas sobre la redacción y el envío de las Etymologiae de Isidoro, uno de los tratados enciclopédicos más importantes de la Edad Media. Posteriormente, estas epístolas fueron añadidas al inicio de la obra de Isidoro y transmitidas conjuntamente con ella. El objetivo de este artículo es analizar algunas características de estas epístolas, que constituyen uno de los pocos documentos que poseemos sobre el proceso de escritura y difusión de las Etymologiae.
Se tratará también de mostrar que algunos de los datos que contienen las cartas y que tradicionalmente se han considerado realia, podrían en cambio ser interpretados como topoi característicos de los prólogos medievales.
description: ACME, Vol 67, No 1 (2014)
String Gyratons in Supergravity
Creators: name: Frolov, Valeri P.
name: Lin, Feng-Li
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study solutions of the supergravity equations with the string-like sources moving with the speed of light. An exact solution is obtained for the gravitational field of a boosted ring string in any dimension greater than three.
description: 7 pages;v2 minor changes & references added, final in PRD
Empirically Determining Substellar Cloud Compositions in the era of JWST
Creators: name: Luna, Jessica
name: Morley, Caroline
Publisher: name: Zenodo
Year: 2021
Subjects: Very low mass stars
brown dwarf atmospheres
silicate feature

description: Brown dwarfs have cool atmospheres with the temperatures of giant planets. Their atmospheres are cool enough to form clouds and their temperature determines which species condense. Thick layers of dust, likely made of silicates, blanket L dwarf atmospheres, limiting the depths probed by spectra; these clouds clear dramatically at the L/T transition. Cloud chemistry and microphysics is challenging to model from first principles; clouds clearly form, but the specific species that condense are not well-constrained from theory. This uncertainty is a major barrier to understanding exoplanet atmospheres. The next key step is to empirically determine which clouds form using mid-infrared spectroscopy to identify mineral species. There is tentative evidence from Spitzer that silicate features are present in L dwarf spectra. JWST could allow us to measure these features in many L dwarfs. Before these observations are made, we need to understand in detail at what wavelengths the strongest cloud absorption features will be, and predict which objects will have the largest amplitude signals. We explore the impact of individual cloud species, including how particle sizes and cloud mineralogy change spectral features. We investigate which objects are most ideal to observe, exploring a range of temperatures and surface gravities. We find that silicate and corundum clouds have a strong cloud absorption feature for small particle sizes (<1 um). Silicate clouds strongly absorb at 10 um while corundum absorbs at 11.5 um. We simulate time-series observations with the MIRI instrument on JWST for a range of nearby, cloudy, and photometrically variable brown dwarfs. Our predictions suggest that with JWST, by measuring spectroscopic variability inside and outside a mineral feature, we can uniquely identify a range of cloud species. Mid-infrared time-series spectroscopy can be used to empirically constrain the complex cloud condensation sequence in brown dwarf atmospheres.
Laser-Assisted Multilevel Non-Volatile Memory Device Based on 2D van-der-Waals Few-layer-ReS2/h-BN/Graphene Heterostructures
Creators: name: Mukherjee, Bablu
name: Zulkefli, Amir
name: Watanabe, Kenji
name: Taniguchi, Takashi
name: Wakayama, Yutaka
name: Nakaharai, Shu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Few-layer ReS2 field-effect transistors (FET) with a local floating gate (FG) of monolayer graphene separated by a thin h-BN tunnel layer for application to a non-volatile memory (NVM) device is designed and investigated. FG-NVM devices based on two-dimensional (2D) van-der-Waals (vdW) heterostructures have recently been studied as important components to realize digital electronics and multifunctional memory applications. Direct bandgap multilayer ReS2 satisfies various requirements as a channel material for electronic devices as well as being a strong light-absorbing layer, which makes it possible to realize light-assisted optoelectronic applications. The non-volatile memory operation with a high ON/OFF current ratio, a large memory window, good endurance (> 1000 cycles) and stable retention (> 104 s) have been observed. We demonstrate successive program and erase states using 10 millisecond gate pulses of +10 V and -10 V, respectively. Laser pulses along with electrostatic gate pulses provide multi-bit level memory access via opto-electrostatic coupling. The devices exhibit the dual functionality of a conventional electronic memory and can store laser-pulse excited signal information for future all-optical logic and quantum information processing.
description: 43 pages
Aging and Immortality in a Cell Proliferation Model
Creators: name: Antal, T.
name: Blagoev, K. B.
name: Trugman, S. A.
name: Redner, S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Cell Behavior (q-bio.CB)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: We investigate a model of cell division in which the length of telomeres within the cell regulate their proliferative potential. At each cell division the ends of linear chromosomes change and a cell becomes senescent when one or more of its telomeres become shorter than a critical length. In addition to this systematic shortening, exchange of telomere DNA between the two daughter cells can occur at each cell division. We map this telomere dynamics onto a biased branching diffusion process with an absorbing boundary condition whenever any telomere reaches the critical length. As the relative effects of telomere shortening and cell division are varied, there is a phase transition between finite lifetime and infinite proliferation of the cell population. Using simple first-passage ideas, we quantify the nature of this transition.
description: 6 pages, 1 figure, 2-column revtex4 format; version 2: final published form; contains various improvements in response to referee comments
LA LIBERTÀ E LE IMMAGINI: UNA DRAMMATURGIA A STAZIONI PER IL CONTROLLO DELL’AMORE. LETTURA DI PURGATORIO XVIII-XIX
Creators: name: Brigandì, Ottavio
Publisher: name: ACME
Year: 2014

description: Il presente lavoro si propone come lettura dei canti XVIII e XIX del Purgatorio, dove il centrale discorso di Virgilio sull’amore come fondamento dell’agire umano trova esemplificazione nella doppia forma dell’incontro con le anime accidiose e del sogno (la celebre «femmina
balba»). Che sia in dialogo col maestro o nella descrizione dei purganti o per esperienza onirica, la scoperta della forza del desiderio è seguita, rassicurazione e monito insieme, dalla certezza che il libero arbitrio può trattenerci dalle azioni ree, riconducendo il potere appetitivo
a quello conoscitivo e dunque trasformando il “moto” d’amore nella feconda stasi della riflessione. Fra gli espedienti che sortiscono l’effetto di porre il lettore sullo stesso piano del Viator, si segnalano l’impianto teatrale del discorso, fitto di stazioni narrative e tematiche, e lo stile ricco di figurazioni, allusivo a un impiego della facoltà immaginativa per un fine poetico che intende mostrarsi utile all’educazione umana e davvero “libero” dal giogo amoroso.
description: ACME, Vol 67, No 1 (2014)
Black Hole Production at the LHC by Standard Model Bulk Fields in the Randall-Sundrum Model
Creators: name: Rizzo, Thomas G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We consider the production of black holes at the LHC in the Randall-Sundrum(RS) model through the collisions of Standard Model(SM) fields in the bulk. In comparison to the previously studied case where the SM fields are all confined to the TeV brane, we find substantial suppressions to the corresponding collider cross sections for all initial states, i.e., $gg$, $qq$ and $gq$, where $q$ represents a light quark or anti-quark which lie close to the Planck brane. For $b$ quarks, which are closer to the TeV brane, this suppression effect is somewhat weaker though $b$ quark contributions to the cross section are already quite small due to their relatively small parton densities. Semi-quantitatively, we find that the overall black hole cross section is reduced by roughly two orders of magnitude in comparison to the traditional TeV brane localized RS model with the exact value being sensitive to the detailed localizations of the light SM fermions in the bulk.
description: 14 pages, 3 figs; refs and discussion added
Estimating stellar spots from Ca II H&K activity proxy in solar-like stars
Creators: name: Ferreira, Rafael R.
name: Gonçalves, B.F.O.
name: Castro, Matthieu
Publisher: name: Zenodo
Year: 2021
Subjects: Cool Stars on the main sequence
sunspots
chromospheric activity
solar-like stars

description: The magnetic phenomena on the solar surface have been the subject of several investigations over the last 400 years. The early indicator of the solar magnetic activity was the sunspot counting. The main indicators now are the International Sunspot Number, the Group Number, the Total Sunspot Area, and Photometric Sunspot Index. Several improvements in observational techniques have allowed measuring the magnetic activity using the solar/stellar spectra. The standard spectroscopic activity indicator is the S-index, based on the Ca II H&K emission lines, jointly the chromospheric component R'HK. Observations to stellar spots in other stars remain unclear, it is worth proposing a theoretical estimate to spot amount on other solar-type stars using the Sun as a star. We report a calibration between the spectroscopic chromospheric activity proxies (S-index and R'HK) and the sunspot indicators over the last decades. Our results indicate a quadratic power-law relationship.
The events which facilitate and hinder entrepreneurship
Creators: name: Lee, Grant
Publisher: name: University of British Columbia
Year: 2009

description: Entrepreneurship is very important primarily because of its role in providing jobs and economic growth in our society. By entrepreneurship, I am referring to "the launching and growth of profit making ventures through the use of innovative, risk-assuming management" (Fry, 1993, p. 27). My definition does not include intrapreneurship, that is, entrepreneurial activities carried on within an organization. Existing literature on entrepreneurship provides profiles and descriptions of entrepreneurs as well as differences between male and female entrepreneurs. However, there is a noticeable gap in the information available on the events which are instrumental in launching a new business. To address this gap, information on those critical events were elicited by conducting interviews with five entrepreneurs. In this study, an entrepreneur was defined as an individual who decides to start and is successful in a venture that leads to personal or monetary profit, [whether owning the business alone or with other partners] (Solomon & Winslow, 1988). Specifically, this study explored the critical events which facilitated and hindered entrepreneurial beginnings for five small-business entrepreneurs. One hundred and eight events were elicited using the Critical Incident Method (Flanagan, 1954). These events were organized into 22 categories and several procedures were used to determine the reliability of the categories obtained. Event categories were then organized into six themes which facilitated and hindered individuals in becoming entrepreneurs. The six themes were: gained knowledge and competence, reflected upon career goals, experienced progress in work, overcame obstacles, received support, and received an entrepreneurial opportunity. In this study, narrative accounts were analyzed to reveal how the events were dynamic. Three general patterns in becoming an entrepreneur were identified. One pattern was an experience of transition in which there was a movement towards self-fulfilment through work. The second pattern was an experience of catastrophe, followed by recovery. The third pattern was one in which individuals capitalized on entrepreneurial opportunities. The results of this study provide an incentive to further investigate actions which facilitate and hinder entrepreneurial beginnings. This type of research contributes to the development of a different type of model in launching a business, one which focuses on actions rather than on traits and characteristics. A model which focuses on action taking will not only help aspiring entrepreneurs, but will assist helpers in the field of career counselling.
Casimir effect for thin films in QED
Creators: name: Markov, V. N.
name: Pis'mak, Yu. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We consider the problem of modeling of interaction of thin material films with fields of quantum electrodynamics. Taking into account the basic principles of quantum electrodynamics (locality, gauge invariance, renormalizability) we construct a single model for Casimir-like phenomena arising near the film boundary on distances much larger then Compton wavelength of the electron. In this region contribution of Dirac fields fluctuations are not essential and can be neglected. In the model the film is presented by a singular background field concentrated on a 2-dimensional surface and interacting with quantum electromagnetic field. All properties of the film material are described by one dimensionless parameter. For two parallel plane films the Casimir force appears to be non-universal and dependent on material property. It can be both attractive and repulsive. In the model we study scattering of electromagnetic wave on the plane film, an interaction of plane film with point charge, homogeneously charged plane and straight line current. Here, besides usual results of classical electrodynamics the model predicts appearance of anomalous electromagnetic phenomena.
description: 8 pages,1 figure
Ανάλυση Βιομοριακών Δεδομένων Από CLL Με Τη Χρήση Βιοπληροφορικής
Creators: name: Γκούφας, Αθανάσιος Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Αλληλούχηση Υψηλής Απόδοσης
Χρόνια Λεμφοκυτταρική Λευχαιμία
Τ κυτταρικός Υποδοχέας
High Throughput Sequencing
Chronic Lymphocytic Leukemia
T-cell Receptor

description: Με την ανάπτυξη των αλληλουχητών υψηλής απόδοσης η τεχνική της αλληλούχησης έχει σημειώσει τεράστια πρόοδο. Η αλληλούχηση επόμενης γενιάς το τελευταίο διάστημα άρχισε να εφαρμόζεται και σε μελέτες της ανοσογενετικής για την ανάλυση των ρεπερτορίων TR και IG σε παθολογικές ή φυσιολογικές καταστάσεις. Όμως, για κάθε περίπτωση προκύπτει ένας μεγάλος όγκος δεδομένων που καθιστά απαραίτητη τη χρήση υπολογιστικών εργαλείων για την ανάλυσή του. Αντικείμενο αυτής της διπλωματικής είναι η ανάπτυξη μιας μεθοδολογίας για την ανάλυση των βιολογικών δεδομένων αλληλούχησης της β αλυσίδας του Τ κυτταρικού υποδοχέα. Στα πλαίσια αυτής της εργασίας χρησιμοποιήθηκε η βάση της ανοσογενετικής του IMGT για την ανάλυση των αλληλουχιών. Η διεξαγωγή της ανάλυσης υλοποιήθηκε με την υψηλού επιπέδου γλώσσα προγραμματισμού Python. Το αρχικό στάδιο της ανάλυσης ήταν η επεξεργασία των δεδομένων κάθε ασθενή ξεχωριστά. Στη συνέχεια, συγκρίθηκαν τα δεδομένα μεταξύ των ασθενών και τα δεδομένα NGS με τα δεδομένα Sanger του ίδιου δείγματος. Επιπλέον παρουσιάστηκαν κάποια συμπερασματικά διαγράμματα και συνοπτικοί πίνακες των αποτελεσμάτων της ανάλυσης. Τέλος, περιγράφηκε η ανάπτυξη βιοπληροφορικών εργαλείων στη διαδικτυακή πλατφόρμα του Galaxy. Η μεθοδολογία που περιγράφεται στα πλαίσια αυτής της διπλωματικής συνιστά μια πρώτη προσέγγιση της επεξεργασίας των δεδομένων αλληλούχησης υψηλής απόδοσης των αναδιατάξεων του Τ κυτταρικού υποδοχέα, η οποία μπορεί να αποτελέσει τη βάση για περαιτέρω επέκταση της μελέτης.
description: The development of Next-Sequencing Generation(NGS) improved the technique of sequencing. Recent studies of immunogenetics at TR and IG repertoire use the NGS technology. The large volume of data as a result of the analysis necessitates the use of computational tools. The subject of this thesis is a methodology of the sequencing data of TCR β chain. This study uses the immunogenetics database of IMGT for the analysis of sequences. The analysis implemented in the high level language Python. The initial stage of analysis was the data processing of each patient separately. Consequently, the data was compared among patient and the data of NGS technology with the data of Sanger technology. Finally, was depicted the development of bioinformatics tools in the web-based platform of Galaxy. The methodology of this thesis is a first approach at processing of NGS data of TCR sequences. A future study at this object could rely on this approach.
Analysis of boosting algorithms using the smooth margin function
Creators: name: Rudin, Cynthia
name: Schapire, Robert E.
name: Daubechies, Ingrid
Publisher: name: arXiv
Year: 2008
Subjects: subject: Machine Learning (stat.ML)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 68W40, 68Q25 (Primary) 68Q32 (Secondary)

description: We introduce a useful tool for analyzing boosting algorithms called the ``smooth margin function,'' a differentiable approximation of the usual margin for boosting algorithms. We present two boosting algorithms based on this smooth margin, ``coordinate ascent boosting'' and ``approximate coordinate ascent boosting,'' which are similar to Freund and Schapire's AdaBoost algorithm and Breiman's arc-gv algorithm. We give convergence rates to the maximum margin solution for both of our algorithms and for arc-gv. We then study AdaBoost's convergence properties using the smooth margin function. We precisely bound the margin attained by AdaBoost when the edges of the weak classifiers fall within a specified range. This shows that a previous bound proved by Rätsch and Warmuth is exactly tight. Furthermore, we use the smooth margin to capture explicit properties of AdaBoost in cases where cyclic behavior occurs.
description: Published in at http://dx.doi.org/10.1214/009053607000000785 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Active nematics are intrinsically phase-separated
Creators: name: Mishra, Shradha
name: Ramaswamy, Sriram
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Two-dimensional nonequilibrium nematic steady states, as found in agitated granular-rod monolayers or films of orientable amoeboid cells, were predicted [Europhys. Lett. {\bf 62} (2003) 196] to have giant number fluctuations, with standard deviation proportional to the mean. We show numerically that the steady state of such systems is {\em macroscopically phase-separated}, yet dominated by fluctuations, as in the Das-Barma model [PRL {\bf 85} (2000) 1602]. We suggest experimental tests of our findings in granular and living-cell systems.
description: 4 pages, 6 .eps figures, accepted for publication in PRL 3 Aug 06
ATP-driven separation of liquid phase condensates in bacteria
Creators: name: Guilhas, B.
name: Walter, J. C.
name: Rech, J.
name: David, G.
name: Walliser, N. -O.
name: Palmeri, J.
name: Mathieu-Demaziere, C.
name: Parmeggiani, A.
name: Bouet, J. Y.
name: Gall, A. Le
name: Nollmann, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Subcellular Processes (q-bio.SC)
subject: FOS: Biological sciences

description: Liquid-liquid phase separated (LLPS) states are key to compartmentalise components in the absence of membranes, however it is unclear whether LLPS condensates are actively and specifically organized in the sub-cellular space and by which mechanisms. Here, we address this question by focusing on the ParABS DNA segregation system, composed of a centromeric-like sequence (parS), a DNA-binding protein (ParB) and a motor (ParA). We show that parS-ParB associate to form nanometer-sized, round condensates. ParB molecules diffuse rapidly within the nucleoid volume, but display confined motions when trapped inside ParB condensates. Single ParB molecules are able to rapidly diffuse between different condensates, and nucleation is strongly favoured by parS. Notably, the ParA motor is required to prevent the fusion of ParB condensates. These results describe a novel active mechanism that splits, segregates and localises non-canonical LLPS condensates in the sub-cellular space.
Humidity contribution to C_n^2 over a 600m pathlength in a tropical marine environment
Creators: name: Chang, Mark P. J. L.
name: Font, Carlos O.
name: Gilbreath, G. Charmaine
name: Oh, Eun
Publisher: name: arXiv
Year: 2007
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present new optical turbulence structure parameter measurements, C_n^2, over sea water between La Parguera and Magueyes Island (17.6N 67W) on the southwest coast of Puerto Rico. The 600 meter horizontal paths were located approximately 1.5 m and 10 m above sea level. No data of this type has ever been made available in the literature. Based on the data, we show that the C_n^2 measurements are about 7 times less compared to equivalent land data. This strong evidence reinforces our previous argument that humidity must be accounted for to better ascertain the near surface atmospheric turbulence effects, which current visible / near infrared C_n^2 bulk models fail to do. We also explore the generalised fractal dimension of this littoral data and compare it to our reference land data. We find cases that exhibit monofractal characteristics, that is to say, the effect of rising temperatures during the daylight hours upon turbulence are counterbalanced by humidity, leading to a single characteristic scale for the measurements. In other words, significant moisture changes in the measurement volume cancels optical turbulence increases due to temperature rises. Figures available as JPG only.
description: 7 pages, 4 figures, 1 table, SPIE Photonics West 2007, paper 6457B-29
Οι διαφορές στη επίλυση προβλημάτων στα μαθηματικά μεταξύ μαθητών δημοτικού με και δίχως μαθησιακές δυσκολίες.:
Creators: name: Παγώνη, Ειρήνη-Χρυσοβαλάντω Θωμά
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: ολιστικός
αναλυτικός
τεστ μαθησιακής επάρκειας
holistic
analytic
learning aptitude test

description: Τα τελευταία χρόνια οι μαθητές με μαθησιακές δυσκολίες έχουν γίνει αντικείμενο έντονης μελέτης Οι μαθησιακές δυσκολίες παρατηρούνται σε σημαντικό ποσοστό του μαθητικού πληθυσμού και επιδρούν στην ακαδημαϊκή πρόοδο αλλά και στην κοινωνική ανάπτυξη των μαθητών. Οι μαθητές με μαθησιακές δυσκολίες αντιμετωπίζουν προβλήματα κυρίως στη γραφή την ανάγνωση και στα μαθηματικά. Η παρούσα διπλωματική εργασία επιχειρεί να μελετήσει και να συγκρίνει τους τρόπους επεξεργασίας που χρησιμοποιούν οι μαθητές με μαθησιακές ή δίχως δυσκολίες που φοιτούν στην Ε΄καιΣτ΄δημοτικού, προκειμένου να λύσουν μαθηματικά προβλήματα αλλά και τη δυνατότητα επίλυσης των προβλημάτων. Η έρευνα πραγματοποιήθηκε σε δημοτικά σχολεία του νομού Χαλκιδικής και συμμετείχαν 93 μαθητές εκ των οποίων 48 ήταν με μαθησιακές και 45 τυπικής ανάπτυξης. Από τα δεδομένα της έρευνας προέκυψε ότι κατά μεγάλο ποσοστό οι μαθητές με μαθησιακές δυσκολίες χρησιμοποιούν ολιστικούς τρόπους επεξεργασίας ενώ οι μαθητές τυπικής ανάπτυξης, αναλυτικούς. Επιπλέον οι μαθητές με μαθησιακές τείνουν να μην επιλύουν τα προβλήματα σε αντίθεση με τους μαθητές τυπικής.
description: Recently children with learning disabilities have become the subject of intensive studies as nowadays learning disabilities are observed in a significant proportion of the children population and have a significant impact onchildren’ academic progress and social development. Childrenwith learning disabilities encounter problems mainly in writing, reading and mathematics.This thesis attempts to study and compare the cognitive methods used by children with and without learning disabilities attending the fifth and sixth grade of primary school in order to solve mathematical problems and their ability to solve mathematical problems. The study took place in primary schools of Halkidiki and included a total of 93 students of which 48 had learning disabilities and 45 were typically developing children. The results of the current study showed that children with learning disabilities fail to solve mathematical problems and tend to use a holistic cognitive method while typically developing children succeeded in solving the problems and tend to use an analytic cognitive method.
NATI DUE VOLTE DI GIUSEPPE PONTIGGIA: LA RETICENZA E LE FORME DELLA RAGIONE
Creators: name: Neri, Laura
Publisher: name: ACME
Year: 2014

description: Nel 2000 viene pubblicato da Mondadori Nati due volte, di Giuseppe Pontiggia. Il romanzo ottiene un grande successo di pubblico, e narra la vicenda del rapporto tra un padre e un figlio disabile. La storia, che si origina da un nucleo autobiografico, segue l’ordine cronologico, mentre la scrittura, filtrata dalla memoria del narratore, rievoca un percorso di sofferenza, di pause ragionative, di profonde intese affettive.
description: ACME, Vol 67, No 1 (2014)
L'APPARTAMENTO DI RISERVA PER PRINCIPI NEL PALAZZO REALE DI MILANO
Creators: name: Eusebio, Flavio
Publisher: name: ACME
Year: 2014

description: Un inaspettato percorso di undici sale rimaste inalterate dal 1838, uniche a non aver subito le devastazioni belliche, da poco restaurate e aperte al pubblico, costituiscono il corpus di un appartamento di Riserva all’interno del Palazzo Reale di Milano. Questo contributo racconta passo per passo la storia della sua costruzione, dalle intenzioni dell’arciduca Ranieri che lo commissionò alle vicende artistiche del cantiere. Progettato dall’architetto di corte Giacomo Tazzini e affrescato dai pittori ornatisti Gaetano Vaccani,
Aristomene Ghislandi, Pietro Mariani, Angelo Sornasca, Giovan Battista Airaghi, e da altri ugualmente oggi quasi sconosciuti, l’appartamento rappresenta un eccellente esempio di allestimento della prima metà del XIX secolo, e conserva gli affreschi originali insieme a marmorini, parquet, pavimenti a terrazzo, porte ed arredi fissi.
description: ACME, Vol 67, No 1 (2014)
Extending Shannon's Ionic Radii Database Using Machine Learning
Creators: name: Baloch, Ahmer A. B.
name: Alqahtani, Saad M.
name: Mumtaz, Faisal
name: Muqaibel, Ali H.
name: Rashkeev, Sergey N.
name: Alharbi, Fahhad H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: In computational material design, ionic radius is one of the most important physical parameters used to predict material properties. Motivated by the progress in computational materials science and material informatics, we extend the renowned Shannon's table from 475 ions to 987 ions. Accordingly, a rigorous Machine Learning (ML) approach is employed to extend the ionic radii table using all possible combinations of Oxidation States (OS) and Coordination Numbers (CN) available in crystallographic repositories. An ionic-radius regression model for Shannon's database is developed as a function of the period number, the valence orbital configuration, OS, CN, and Ionization Potential. In the Gaussian Process Regression (GPR) model, the reached R-square $R^2$ accuracy is 99\% while the root mean square error of radii is 0.0332 Å. The optimized GPR model is then employed for predicting a new set of ionic radii for uncommon combinations of OS and CN extracted by harnessing crystal structures from materials project databases. The generated data is consolidated with the reputable Shannon's data and is made available online in a database repository \url{https://cmd-ml.github.io/}.
description: 11 pages , 4 figures
Long-term dynamics driven by resonant wave-particle interactions: from Hamiltonian resonance theory to phase space mapping
Creators: name: Artemyev, Anton V.
name: Neishtadt, Anatoly I.
name: Vasiliev, Alexei. A.
name: Zhang, Xiao-Jia
name: Mourenas, Didier
name: Vainchtein, Dmitri
Publisher: name: arXiv
Year: 2020
Subjects: subject: Space Physics (physics.space-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: In this study we consider the Hamiltonian approach for the construction of a map for a system with nonlinear resonant interaction, including phase trapping and phase bunching effects. We derive basic equations for a single resonant trajectory analysis and then generalize them into the map in the energy/pitch-angle space. The main advances of this approach are the possibility to consider effects of many resonances and to simulate the evolution of the resonant particle ensemble on long time ranges. For illustrative purposes we consider the system with resonant relativistic electrons and field-aligned whistler-mode waves. The simulation results show that the electron phase space density within the resonant region is flattened with reduction of gradients. This evolution is much faster than the predictions of quasi-linear theory. We discuss further applications of the proposed approach and possible ways for its generalization.
Gauge-Invariant Formulation of Adiabatic Self-Consistent Collective Coordinate Method
Creators: name: Hinohara, Nobuo
name: Nakatsukasa, Takashi
name: Matsuo, Masayuki
name: Matsuyanagi, Kenichi
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The adiabatic self-consistent collective coordinate (ASCC) method is a practical microscopic theory of large-amplitude collective motions in nuclei with superfluidity. We show that its basic equations are invariant against transformations involving the gauge angle in the particle-number space. By virtue of this invariance, a clean separation between the large-amplitude collective motion and the pairing rotational motion can be achieved, enabling us to restore the particle-number symmetry broken by the Hartree-Fock-Bogoliubov (HFB) approximation. We formulate the ASCC method explicitly in a gauge-invariant form. In solving the ASCC equations, it is necessary to fix the gauge. Applying this new formulation to the multi-O(4) model, we compare different gauge-fixing procedures and demonstrate that calculations using different gauges indeed yield the same results for gauge-invariant quantities, such as the collective path and quantum spectra. We suggest a gauge-fixing prescription that seems most convenient in realistic calculations.
description: 27 pages, 7 figures, submitted to Prog. Theor. Phys
A link between radio loudness and X-ray/optical properties of AGN
Creators: name: Jester, Sebastian
name: Koerding, Elmar
name: Fender, Rob
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have found empirically that the radio loudness of AGN can be understood as function of both the X-ray and optical luminosity. This way of considering the radio loudness was inspired by the hardness-intensity diagrams for X-ray binaries, in which objects follow a definite track with changes to their radio properties occurring in certain regions. We generalize the hardness-intensity diagram to a "disk-fraction luminosity diagram", which can be used to classify the accretion states both of X-ray binaries and of AGN. Using a sample of nearly 5000 SDSS quasars with ROSAT matches, we show that an AGN is more likely to have a high radio:optical flux ratio when it has a high total luminosity or a large contribution from X-rays. Thus, it is necessary to take into account both the optical and the X-ray properties of quasars in order to understand their radio loudness. The success of categorizing quasars in the same way as X-ray binaries is further evidence for the unification of accretion onto stellar-mass and supermassive compact objects.
description: Proceedings VI Microquasar Workshop, Como, 2006. 8 pages, 8 figures. Published online at http://pos.sissa.it/cgi-bin/reader/conf.cgi?confid=33 ; v2 has correct plot in right-hand panel of Fig. 4; v3 has updated acknowledgement to match resubmitted version
Single-particle and collective excitations in quantum wires comprised of vertically stacked quantum dots: Finite magnetic field
Creators: name: Kushwaha, Manvir S
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A theoretical investigation has been made of the magnetoplasmon excitations in a quasi-one-dimensional electron system comprised of vertically stacked, self-assembled InAs/GaAs quantum dots. The smaller length scales involved in the experiments impel us to consider a perfectly periodic system of two-dimensionally confined InAs quantum dot layers separated by GaAs spacers. Subsequent system is subjected to a two-dimensional confining (harmonic) potential in the x-y plane and an applied magnetic field (B) in the symmetric gauge. This scheme defines virtually a system of quantum wire comprised of vertically stacked quantum dots (VSQD). We derive and discuss the Dyson equation, the generalized (nonlocal and dynamic) dielectric function, and the inverse dielectric function for investigating the single-particle and collective (magnetoplasmon) excitations within the framework of (full) random-phase approximation (RPA). As an application, we study the influence of the confinement potential and the magnetic field on the component eigenfunctions, the density of states (DOS), the Fermi energy, the collective excitations, and the inverse dielectric functions. These findings demonstrate, for the very first time, the significance of investigating the system of VSQD subjected to a quantizing magnetic field. Given the edge over the planar quantum dots and the foreseen applications in the single-electron devices and quantum computation, investigating the system of VSQD is deemed vital. The results suggest exploiting magnetoplasmon qubits to be a potential option for implementing the solemn idea of quantum state transfer in devising quantum gates for the quantum computation and quantum communication networks.
description: 36 pages, 15 figures
What is a crystal?
Creators: name: Lifshitz, Ron
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Almost 25 years have passed since Shechtman discovered quasicrystals, and 15 years since the Commission on Aperiodic Crystals of the International Union of Crystallography put forth a provisional definition of the term crystal to mean ``any solid having an essentially discrete diffraction diagram.'' Have we learned enough about crystallinity in the last 25 years, or do we need more time to explore additional physical systems? There is much confusion and contradiction in the literature in using the term crystal. Are we ready now to propose a permanent definition for crystal to be used by all? I argue that time has come to put a sense of order in all the confusion.
description: Submitted to Zeitschrift fuer Kristallographie
The effect of experience on counsellor schema of sexually abused clients
Creators: name: Sheehan, Heidemarie
Publisher: name: University of British Columbia
Year: 2009

description: The sexual abuse schemas of 97 counsellors were compared on the bases of experience (general counselling, specific sexual abuse counselling, and combined counselling), current client population (working with sexually abused clients or not), and whether they had their own history of childhood sexual abuse. Three inferential measures on a questionnaire were used to evaluate the dimensions of schematic complexity: organization, breadth, and extremity. They were, in order: two versions (one explicit and one disguised) of an "intake" vignette describing an adult woman with a history of childhood sexual abuse; a 100 list of adjectives to describe a sexually abused client; and 20 statements concerning sexual abuse effects. The primary finding was a strong relationship on the dimension of organization: counsellors were significantly more likely to identify sexual abuse as a treatment issue in response to an explicit sexual abuse vignette version than to a disguised version. There was no experience effect but post hoc analyses found significant results on likelihood of identifying sexual abuse in response to the disguised version when counsellors' client focus and personal childhood history of sexual abuse were considered. Current sexual abuse counsellors were more likely to identify it than non sexual abuse counsellors, and counsellors who had themselves been sexually abused as children were more likely to identify sexual abuse than were counsellors who had not. No differences were found on measures of breadth or extremity. Post hoc analyses suggested a tendency for counsellors of high and low experience to respond differently to a list of adjectives and a list of sexual abuse effects but these results did not reach significance.
Noncommutativity in interpolating string: A study of gauge symmetries in noncommutative framework
Creators: name: Gangopadhyay, Sunandan
name: Hazra, Arindam Ghosh
name: Saha, Anirban
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A new Lagrangian description that interpolates between the Nambu--Goto and Polyakov version of interacting strings is given. Certain essential modifications in the Poission bracket structure of this interpolating theory generates noncommutativity among the string coordinates for both free and interacting strings. The noncommutativity is shown to be a direct consequence of the nontrivial boundary conditions. A thorough analysis of the gauge symmetry is presented taking into account the new modified constraint algebra, which follows from the noncommutative structures and finally a smooth correspondence between gauge symmetry and reparametrisation is established.
description: 14 pages Latex
Dissipation-induced topological phase transition and periodic-driving-induced photonic topological state transfer in a small optomechanical lattice
Creators: name: Qi, Lu
name: Wang, Guo-Li
name: Liu, Shutian
name: Zhang, Shou
name: Wang, Hong-Fu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a scheme to investigate the topological phase transition and the topological state transfer based on the small optomechanical lattice under the realistic parameters regime. We find that the optomechanical lattice can be equivalent to a topologically nontrivial Su-Schrieffer-Heeger (SSH) model via designing the effective optomechanical coupling. Especially, the optomechanical lattice experiences the phase transition between topologically nontrivial SSH phase and topologically trivial SSH phase by controlling the decay of the cavity field and the optomechanical coupling. We stress that the topological phase transition is mainly induced by the decay of the cavity field, which is counter-intuitive since the dissipation is usually detrimental to the system. Also, we investigate the photonic state transfer between the two cavity fields via the topologically protected edge channel based on the small optomechanical lattice. We find that the quantum state transfer assisted by the topological zero energy mode can be achieved via implying the external lasers with the periodical driving amplitudes into the cavity fields. Our scheme provides the fundamental and the insightful explanations toward the mapping of the photonic topological insulator based on the micro-nano optomechanical quantum optical platform.
description: 11 pages, 10 figures, to appear in Frontiers of Physics
The role of personality in cross-cultural adjustment: qualitative exploration of introversion and extraversion
Creators: name: Munteanu, Mircea Alexandru
Publisher: name: University of British Columbia
Year: 2009

description: Supplementing the traditional descriptive emic (intra-cultural) studies, and comparative etic (inter-cultural) analyses, with an idiographic approach (individual personality factors) seems to be an effective strategy for researching the process of cross-cultural adjustment, as experienced by immigrants or refugees. In a phenomenological research format, this double-case study, preceded by a pilot study, has tried to identify patterns of introversion and extraversion in the experience of recent immigrants to Canada during their cross-cultural adjustment process. The analytical perspective of C. G. Jung has been used in viewing the cross-cultural adjustment experience as part of the individuation process, as well as in defining and operationalizing the constructs of introversion and extraversion. The content analyses in the two case studies (one introvert participant and one extravert participant) and the pilot study (one introvert participant) have drawn from multiple sources of evidence: a two-hour in-depth semi-structured interview with each participant, their scores on the Myers Briggs Type Indicator, and the participants' responses on a sentence completion blank. In these three case studies (including the pilot study), typical introversion and extraversion themes have been identified and have been found to play an essential role in the immigrants' experience of adjustment to a different culture. The effectiveness of certain assessment techniques and intervention strategies has also been discussed. Implications of the Jungian type theory for the research and practice of cross-cultural counselling have been examined. This study may serve as a basis for the development of a three-dimensional model in cross-cultural counselling.