cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Remnant Black Hole Kicks and Implications for Hierarchical Mergers
Creators: name: Mahapatra, Parthapratim
name: Gupta, Anuradha
name: Favata, Marc
name: Arun, K. G.
name: Sathyaprakash, B. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: When binary black holes merge in dense star clusters, their remnants can pair up with other black holes in the cluster, forming heavier and heavier black holes in a process called hierarchical merger. The most important condition for hierarchical merger to occur is that remnants formed by mergers are retained by the host star cluster. Using the publicly available gravitational-wave event database, we infer the magnitudes of kick velocities imparted to the remnant black holes due to anisotropic emission of gravitational waves and use that to quantify the retention probability of each event as a function of the escape speed of the star cluster. Among the second gravitational-wave transient catalog (GWTC-2) events, GW190814 provides the tightest constraint on the kick magnitude with ${\rm V_{kick}}=74_{-7}^{+10}$ km/s at the 90% credible level. We find that star clusters with escape speeds of 200 km/s can retain about 50% of the events in the GWTC-2. Using the escape speed distributions of nuclear star clusters and globular clusters, we find that $\sim 17$ (2) remnants of GWTC-2 may be retained by the host star cluster if all GWTC-2 events occurred in nuclear (globular) clusters. Our study demonstrates the importance of folding in kick velocity inferences in future studies of hierarchical mergers.
description: 12 pages, 4 figures, 2 tables
Κινηματογραφική παιδεία : η επίδραση του φύλου στις στάσεις μαθητών της πρωτοβάθμιας εκπαίδευσης ως προς τα άτομα με ειδικες εκπαιδευτικές ανάγκες και αναπηρία
Creators: name: Πασσιά, Χρυσούλα Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Στάσεις
Φύλο
Κινηματογραφική παιδεία
Attitudes
Gender
Media literacy

description: Στη σύγχρονη πραγματικότητα, ο ρόλος του κινηματογράφου επαναπροσδιορίζεται αποκτώντας μία νέα παιδευτική διάσταση , όπου μέσω της κινηματογραφικής παιδείας μπορεί να συμβάλλει σε μία κοινωνική νοημοσύνη με καλύτερη γνωστική πρόσληψη, κριτική ανάλυση, και δημιουργική ικανότητα μετατρέποντας τις στάσεις των μαθητών σε διάφορα κοινωνικά θέματα, όπως για τα άτομα με ειδικές εκπαιδευτικές ανάγκες και αναπηρία, κάνοντάς τους ως ενεργούς και αυτόνομους χρήστες των πολυμέσων. Σε αυτό το σημείο αξίζει να σημειωθεί ότι οι στάσεις εξαρτώνται ως έναν βαθμό από το φύλο του κάθε ατόμου, καθώς και τις διαφορές των δύο φύλων με βάση το ρόλο που έχει το κάθε ένα από αυτά στην κοινωνία. Με βάση, λοιπόν, τα προαναφερθέντα στοιχεία επιχειρήθηκε να γίνει όχι μόνο μία απλή νύξη, αλλά μία μεγαλύτερη εμβάθυνση πάνω στο συγκεκριμένο θέμα. Στόχος της παρούσας εργασίας είναι να βρεθεί η επίδραση του φύλου στις στάσεις μαθητών της πρωτοβάθμιας εκπαίδευσης ως προς τα άτομα με ειδικές εκπαιδευτικές ανάγκες και αναπηρία μετά από την παρέμβαση ενός προγράμματος προβολής ταινιών μικρού μήκους
description: In modern reality, the role of cinema redefined acquiring a new educational dimension, where through film literacy can contribute to a social intelligence with better cognitive recruitment, critical analysis, and creative ability, changing the students' attitudes to various social issues, such as for people with special educational needs and disabilities, and placing them as active and autonomous users of multimedia. At this point it is worth noting that attitudes depend to some extent on the sex of the individual, and the differences of gender that based in the role that each one of them has in society. Therefore, based on the aforementioned elements it was attempted to become not only a simple hint, but a greater deepening on the subject. The aim of this study is to find the effect of gender on the attitude of students in primary education towards individuals with special educational needs and disability after the intervention of a short film viewer
Observation of large $h/2e$ and $h/4e$ oscillations in a proximity dc superconducting quantum interference device
Creators: name: Wei, Jian
name: Cadden-Zimansky, Paul
name: Chandrasekhar, Venkat
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have measured the magnetoresistance of a dc superconducting quantum interference device in the form of an interrupted mesoscopic normal-metal loop in contact with two superconducting electrodes. Below the transition temperature of the superconducting electrodes, large $h/2e$ periodic magnetoresistance oscillations are observed. By adding a small dc bias to the ac measurement current, $h/4e$ oscillations can be produced. Lowering the temperature further leads to even larger oscillations, and eventually to sharp switching from the superconducting state to the normal state. This flux-dependent resistance could be utilized to make highly sensitive flux detector.
description: One pdf file, 4 pages, 4 figure. For figure 1, a smaller file is uploaded
Marginal Stability Enables Memory Training in Jammed Solids
Creators: name: Arceri, Francesco
name: Corwin, Eric I.
name: Hagh, Varda F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Memory encoding by cyclic shear is a reliable process to store information in jammed solids, yet its underlying mechanism and its connection to the amorphous structure are not fully understood. When a jammed sphere packing is repeatedly sheared with cycles of the same strain amplitude, it optimizes its mechanical response to the cyclic driving and stores a memory of it. We study memory by cyclic shear training as a function of the underlying stability of the amorphous structure in marginally stable and highly stable packings, the latter produced by minimizing the potential energy using both positional and radial degrees of freedom. We find that jammed solids need to be marginally stable in order to store a memory by cyclic shear. In particular, highly stable packings store memories only after overcoming brittle yielding and the cyclic shear training takes place in the shear band, a region which we show to be marginally stable.
description: 5 pages, 4 figures
Additional file 2: of The combination of bFGF and CHIR99021 maintains stable self-renewal of mouse adult retinal progenitor cells
Creators: name: Jin, Caixia
name: Ou, Qingjian
name: Li, Zongyi
name: Wang, Juan
name: Zhang, Jieping
name: Tian, Haibin
name: Xu, Jing-Ying
name: Gao, Furong
name: Lu, Lixia
name: Xu, Guo-Tong
Publisher: name: figshare
Year: 2018
Subjects: subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Figure S1. Morphology of mNRPCs at different passages. (a) Six days of primary culture, (b) 12 days of primary culture, (c) P1, (d) P4, (e) P9, and (f) P27. Magnification, × 100; Scale bar, 200 μm. (PDF 2849 kb)
Η διαπολιτισμική δεξιότητα των νηπιαγωγών ρωτώντας τους εκπαιδευτικούς δημόσιων νηπιαγωγείων στη Θεσσαλία
Creators: name: Παππά, Ελένη Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Διαπολιτισμική εκπαίδευση
Διαπολιτισμική δεξιότητα
Νηπιαγωγοί
Multicultural education
Intercultural competence
Preschool teachers

description: Η πολυπολιτισμική σύνθεση των κοινωνιών και ο συνεχής ανασχηματισμός τους που παρατηρείται στις μέρες μας υποδεικνύουν την ανάγκη ενός διαπολιτισμικού σκηνικού, το οποίο θα πλαισιώνει την ετερότητα. Η σημασία της διαπολιτισμικής εκπαίδευσης και της διαπολιτισμικής επικοινωνίας αναλύεται στη σχετική βιβλιογραφία επί μακρόν, ενώ, περιεκτική αναφορά γίνεται και στις σελίδες της εργασίας. Αμφότερες, διαπολιτισμική εκπαίδευση και διαπολιτισμική επικοινωνία, οδεύουν στην κατεύθυνση εδραίωσης διαπολιτισμικών τάξεων που σέβονται τη διαφορετικότητα, αλλά εξίσου δυναμικά προς την ίδια κατεύθυνση κινείται και η διαπολιτισμική δεξιότητα. Η παρούσα διατριβή προσφέρει ενδιαφέρον υλικό για τα περιεχόμενά της διαπολιτισμικής δεξιότητας, ενώ συγκαταλέγει και, επίσης, αναλύει παραπλήσιους όρους. Η ερευνητική εστίαση της εργασίας στρέφεται στη διερεύνηση της διαπολιτισμικής δεξιότητας των νηπιαγωγών και τα αποτελέσματα προκύπτουν μέσα από τις απαντήσεις των εκπαιδευτικών. Τα αποτελέσματα συνοδεύονται από συζήτηση για τον αντίκτυπο των ευρημάτων στην ερευνητική και εκπαιδευτική πραγματικότητα.
description: The multicultural construction of the societies and their continuous reformation observed nowadays indicate the necessity of an intercultural background that will embrace diversity. The significance of multicultural education and intercultural communication has been analysed in relevant bibliography for long, whereas it is adequately referenced in the thesis, as well. Both multicultural education and intercultural communication pace into the direction of settling intercultural classrooms where diversity will be respected. Intercultural competence also heads importantly towards the same direction. This thesis provides interesting information upon the contents of intercultural competence. Furthermore, similar terms are portrayed and analysed. The research of the thesis focuses on the examination of preschool teachers’ intercultural competence. The results arise from the answers of the educators. Conclusions come along with discussion about the impact of the findings on the scientific and educational reality.
Digitization and analysis of mammographic images for early detection of breast cancer
Creators: name: Aghdasi, Farzin
Publisher: name: University of British Columbia
Year: 2009

description: X-ray mammography is the proven method for early detection of breast cancer. Digital processing and analysis of mammographic images can potentially assist in improved performance of radiologists in earlier detection and recognition of abnormalities. In this work a novel image acquisition system based on an area scanning CCD array has been developed for the digitization of mammograms at high spatial and photometric resolutions. The system characteristic parameters were measured. The quality of the resulting images in terms of sharpness and noise content is comparable with that obtained by the more expensive and slower drum laser-scanning microdensitometer. The clinical application of soft-copy display of digitized images are evaluated. To further improve the quality of the images, restoration algorithms were applied to restore the images from the degrading effects of the system’s blur and noise. Performance of three filtering techniques was compared. A new method for the reduction of boundary truncation artifacts in image restoration was suggested and studied. The process of radiographic image formation was modeled and two locally adaptive smoothing filters were employed to counter signal-dependent radiographic noise before application of restoration filters. The results of the restored images show a marked improvement in detectability of smallest particles of microcalcifications when judged by a human observer. Image segmentation routines were developed to separate microcalcifications from the background parenchymal pattern. Performances of two algorithmic approaches to segmentation and two artificial neural networks were compared. Over 100 numerical features were automatically extracted from the clusters of microcalcifications. These features were evaluated for their ability to separate the benign and malignant formations. Using a database of 68 digitized mammograms a discriminant function was calculated. The sensitivity and specificity of this approach in recognition of malignant microcalcification clusters is shown to be comparable to that of trained radiologists.
MAELAS 2.0: A new version of a computer program for the calculation of magneto-elastic properties
Creators: name: Nieves, P.
name: Arapan, S.
name: Zhang, S. H.
name: Kądzielawa, A. P.
name: Zhang, R. F.
name: Legut, D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: MAELAS is a computer program for the calculation of magnetocrystalline anisotropy energy, anisotropic magnetostrictive coefficients and magnetoelastic constants in an automated way. The method originally implemented in version 1.0 of MAELAS was based on the length optimization of the unit cell, proposed by Wu and Freeman, to calculate the anisotropic magnetostrictive coefficients. We present here a revised and updated version (v2.0) of MAELAS, where we added a new methodology to compute anisotropic magnetoelastic constants from a linear fitting of the energy versus applied strain. We analyze and compare the accuracy of both methods showing that the new approach is more reliable and robust than the one implemented in version 1.0, especially for non-cubic crystal symmetries. This analysis also help us to find that the accuracy of the method implemented in version 1.0 could be improved by using deformation gradients derived from the equilibrium magnetoelastic strain tensor, as well as potential future alternative methods like the strain optimization method. Additionally, we clarify the role of the demagnetized state in the fractional change in length, and derive the expression for saturation magnetostriction for polycrystals with trigonal, tetragonal and orthorhombic crystal symmetry. In this new version, we also fix some issues related to trigonal crystal symmetry found in version 1.0.
Danzare il Nāṭya. Permanenze e trasformazioni del teatro-danza indiano
Creators: name: Casari, Matteo
name: Giuditta, De Concini
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: L-ART/05 Discipline dello spettacolo
L-OR/17 Filosofie, religioni e storia dell'India e dell'Asia centrale
L-OR/18 Indologia e tibetologia

description: Danzare il Nāṭya è l’esito di un lavoro collettivo attorno ad una categoria teatrale, il Nāṭya appunto, generata dalla sapienza dell’India antica ma ancora oggi valida e necessaria a comprenderne la storia e gli sviluppi scenici. È, insomma, un tentativo volto ad articolare un discorso polifonico e al contempo unitario e rizomatico, ossia capace di evidenziare le interconnessioni a più livelli tra il Nāṭya e la cultura – non solo scenica – che lo significa. Interrogando il Nāṭya gli autori del volume hanno voluto tracciarne l’attuale panorama esplorandone le connessioni e le frizioni tra la dimensione tradizionale e la contemporaneità. 
Danzare il Nāṭya, infine, è l’omaggio ad un maestro, Giorgio Renato Franci (1933-2012), il cui lavoro ha permesso a tanti di assaporare l’India.

Dancing Nāṭya is the result of a collective work around a theatrical category –the Nāṭya in fact ¬– generated by the wisdom of ancient  India, being it yet still valid and crucial to understand the history and scenic development of this Country. It is, in short, an attempt to articulate a polyphonic speech which is unified and rhizomatous at once, and which is able to highlight the interconnections at many levels between Nāṭya and culture – not only from the scenic point of view. By questioning the Nāṭya, the authors of the volume intended to outline the current scene, exploring the connections and the frictions between its traditional and contemporary dimension.
Dancing Nāṭya, finally, is a tribute to a maestro, Giorgio Renato Franci (1933-2012), whose work has allowed many to savour India.
Resurgence of the large-charge expansion
Creators: name: Dondi, Nicola
name: Kalogerakis, Ioannis
name: Orlando, Domenico
name: Reffert, Susanne
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the O(2N) model at criticality in three dimensions in the double scaling limit of large N and large charge. We show that the large-charge expansion is an asymptotic series, and we use resurgence techniques to study the non-perturbative corrections and to extend the validity of the effective field theory to any value of the charge. We conjecture the general form of the non-perturbative behavior of the conformal dimensions for any value of N and find very good agreement with previous lattice data.
description: references added, minor fixes
Additional file 14: of Inherited and multiple de novo mutations in autism/developmental delay risk genes suggest a multifactorial model
Creators: name: Guo, Hui
name: Wang, Tianyun
name: Wu, Huidan
name: Long, Min
name: Coe, Bradley
name: Li, Honghui
name: Xun, Guanglei
name: Ou, Jianjun
name: Chen, Biyuan
name: Duan, Guiqin
name: Bai, Ting
name: Zhao, Ningxia
name: Shen, Yidong
name: Li, Yun
name: Wang, Yazhe
name: Zhang, Yu
name: Baker, Carl
name: Liu, Yanling
name: Pang, Nan
name: Huang, Lian
name: Han, Lin
name: Jia, Xiangbin
name: Liu, Cenying
name: Ni, Hailun
name: Yang, Xinyi
name: Xia, Lu
name: Chen, Jingjing
name: Shen, Lu
name: Li, Ying
name: Zhao, Rongjuan
name: Zhao, Wenjing
name: Peng, Jing
name: Pan, Qian
name: Long, Zhigao
name: Su, Wei
name: Tan, Jieqiong
name: Du, Xiaogang
name: Ke, Xiaoyan
name: Yao, Meiling
name: Hu, Zhengmao
name: Zou, Xiaobing
name: Zhao, Jingping
name: Bernier, Raphael
name: Eichler, Evan
name: Xia, Kun
Publisher: name: figshare
Year: 2018
Subjects: subject: Biophysics
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Plant Biology

description: Figure S9. Parent carriers of CHD8 LGD mutations show autistic traits. The density plots are based on the BAPQ scores of all SSC parents. Left: father; Right: mother. Red arrows point to the corresponding BAPQ scores of the three parents with CHD8 LGD mutations. (PDF 249 kb)
The XMM-Newton/INTEGRAL monitoring campaign of IGR J16318-4848
Creators: name: Ibarra, A.
name: Matt, G.
name: Guainazzi, M.
name: Kuulkers, E.
name: Jimenez-Bailon, E.
name: Rodriguez, J.
name: Nicastro, F.
name: Walter, R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: IGR J16318-4848 is the prototype and one of the more extreme examples of the new class of highly obscured Galactic X-ray sources discovered by INTEGRAL. A monitoring campaign on this source has been carried out by XMM-Newton and INTEGRAL, consisting in three simultaneous observations performed in February, March and August 2004. The long-term variability of the Compton-thick absorption and emission line complexes will be used to probe the properties of the circumstellar matter. A detailed timing and spectral analysis of the three observations is performed, along with the reanalysis of the XMM-Newton observation performed in February 2003. The results are compared with predictions from numerical radiative transfer simulations to derive the parameters of the circumstellar matter. Despite the large flux dynamic range observed (almost a factor 3 between observations performed a few months apart), the source remained bright (suggesting it is a persistent source) and Compton-thick (NH >1.2x10^24 cm-2). Large Equivalent Width (EW) emission lines from Fe Kalpha, Fe Kbeta and Ni Kalpha were present in all spectra. The addition of a Fe Kalpha Compton Shoulder improves the fits, especially in the 2004 observations. Sporadic occurrences of rapid X-ray flux risings were observed in three of the four observations. The Fe Kalpha light curve followed the continuum almost instantaneously, suggesting that the emission lines are produced by illumination of small-scale optically-thick matter around the high-energy continuum source. Using the iron line EW and Compton Shoulder as diagnostic of the geometry of the matter, we suggest that the obscuring matter is in a flattened configuration seen almost edge-on.
description: accepted by Astronomy and Astrophysics
Towards ferroelectrically-controlled magnetism: Magnetoelectric effect in Fe/BaTiO3 multilayers
Creators: name: Duan, Chun-Gang
name: Jaswal, Sitaram S.
name: Tsymbal, Evgeny Y.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: An unexplored physical mechanism which produces a magnetoelectric effect in ferroelectric/ferromagnetic multilayers is studied based on first-principles calculations. Its origin is a change in bonding at the ferroelectric/ferromagnet interface that alters the interface magnetization when the electric polarization reverses. Using Fe/BaTiO3 multilayers as a representative model we show a sizable difference in magnetic moments of Fe and Ti atoms at the two interfaces dissimilar by the orientation of the local electric dipole moment. The predicted magnetoelectric effect is comparable in magnitude with that observed in elastically-coupled composites and opens a new direction to control magnetic properties of thin-film layered structures by electric fields.
Fermi-Pasta-Ulam phenomena and persistent breathers in the harmonic trap
Creators: name: Biasi, Anxo
name: Evnin, Oleg
name: Malomed, Boris A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider the long-term weakly nonlinear evolution governed by the two-dimensional nonlinear Schrödinger (NLS) equation with an isotropic harmonic oscillator potential. The dynamics in this regime is dominated by resonant interactions between quartets of linear normal modes, accurately captured by the corresponding resonant Hamiltonian system. In the framework of this system, we identify Fermi-Pasta-Ulam-like recurrence phenomena, whereby the normal-mode spectrum passes in close proximity of the initial configuration, and two-mode states with time-independent mode amplitude spectra that translate into long-lived breathers of the original NLS equation. We comment on possible implications of these findings for nonlinear optics and matter-wave dynamics in Bose-Einstein condensates.
description: v2: cosmetic improvements, published version
La "Tavola Strozzi" della Napoli Aragonese come progetto di Francesco di Giorgio
Creators: name: Di Battista, Rosanna
name: Molari, Pier Gabriele
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: ICAR/14 Composizione architettonica e urbana
M-STO/05 Storia della scienza e delle tecniche

description: Dopo una breve ricostruzione del periodo storico ed una sintetica rassegna degli studi sulla Tavola Strozzi, custodita al museo di San Martino di Napoli, si fa riferimento alla attività di Francesco di Giorgio a Napoli, prima come inviato dal Duca di Urbino e poi come, oggi diremmo, libero professionista e si pone l’ipotesi che la tavola sia una esposizione grafica del suo progetto per mostrare e quindi poter poi far approvare un radicale cambiamento del porto e delle nuove opere di difesa da realizzare a Napoli. Si hanno così motivi per allargare lo spazio temporale della rappresentazione pensando ai momenti più significativi del regno Aragonese, superando le varie obiezioni degli studiosi che hanno contestato la contemporaneità degli eventi rappresentati.
Da un attento esame dell’opera, delle cedole Aragonesi, dei dispacci degli ambasciatori, della Croniche di Notar Jacopo e del Ferraiolo, delle tante analogie con il dipinto della predica di San Bernardino, dal confronto con la città ideale di Berlino, si conferma l’impressione che si ha quando si vede la tavola per la prima volta e cioè che riguardi un progetto per il nuovo ciclopico porto, per opere di difesa della città e che sia frutto dell’intelligenza di Francesco di Giorgio.
Η χρήση του ενδοαορτικού ασκού στην υποστήριξη της αριστερής κοιλίας
Creators: name: Στρογγύλη, Ευλαμπία Ιωάννης
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Ενδοαορτικός ασκός
Αριστερή κοίλια καρδιάς
Ισχαιμική καρδιακή ανεπάρκεια
Intra-aortic-Ballon
Left ventricle
Ischemic heart failure

description: Η ισχαιμική καρδιακή ανεπάρκεια αποτελεί ένα από τα κυριότερα ιατρικά προβλήματα στις μέρες μας, που από ότι φαίνεται από τις προβλέψεις θα επιταθεί στο άμεσο και απώτερο μέλλον. Η αντιμετώπιση της αποτελεί ξεχωριστό κλάδο της ιατρικής, με τη θεραπεία της να περιλαμβάνει φαρμακευτική αγωγή, καρδιοχειρουργικές επεμβάσεις, τοποθέτηση και χρήση συσκευών υποστήριξης της καρδιακής λειτουργίας, με αποκορύφωμα και κλιμάκωση την ολική τεχνητή καρδιά και τη μεταμόσχευση. Ανάμεσα στα μηχανικά μέσα που διαθέτουμε για την υποστήριξη της ανεπαρκούσας καρδιακής λειτουργίας, την αρχική βοήθεια παρέχει ο ενδοαορτικός ασκός ( Intra Aortic Ballon Pump-IABP). Ο ενδοαορτικός ασκός αποτελεί ένα εύχρηστο, αποτελεσματικό και χαμηλού κόστους εργαλείο που χρησιμοποιείται σε όλες τις στεφανιαίες και καρδιοχειρουργικές μονάδες ανά τον κόσμο. Παρέχει σημαντική υποβοήθηση στη λειτουργία της αριστερής κοιλίας που ανεπαρκεί λόγω ισχαιμίας ή επιπλοκής εμφράγματος του μυοκαρδίου. Τοποθετείται ενδαγγειακά και έχει απόλυτες ενδείξεις και αντενδείξεις χρησιμοποίησης. Παρουσιάζει διάφορες επιπλοκές, ωστόσο η προσφορά του στην υποστήριξη της αριστερής κοιλίας υπερέχει των προβλημάτων που μπορεί να προκληθούν.
description: The ischemic heart failure constitutes one of the principal medical problems nowadays, which according to predictions, will be aggravated in the foreseeable and distant future. Its medical treatment is a separate field of medicine which includes medication, cardiothoracic surgeries and the insertion and use of devices that assist the heart function culminating in the total artificial heart and transplant action. Among the mechanical means available for the support of the insufficient cardiac function, the main aid is provided by the Intra-Aortic Balloon Pump – IABP. The Intra Aortic Balloon constitutes a practical, efficient and low-cost device which is widely used in coronary and cardiothoracic care units all over the world. It provides significant facilitation of the left ventricle that is failing due to ischemia or myocardial infarction. It is inserted intravascularly and it has absolute indications and contraindications. There are various complications that can occur, however its contribution to the assistance of the left ventricle outweighs any problem that might be caused.
Quantum phase transition in the one-dimensional compass model
Creators: name: Brzezicki, Wojciech
name: Dziarmaga, Jacek
name: Oles, Andrzej M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We introduce a one-dimensional model which interpolates between the Ising model and the quantum compass model with frustrated pseudospin interactions $σ_i^zσ_{i+1}^z$ and $σ_i^xσ_{i+1}^x$, alternating between even/odd bonds, and present its exact solution by mapping to quantum Ising models. We show that the nearest neighbor pseudospin correlations change discontinuosly and indicate divergent correlation length at the first order quantum phase transition. At this transition one finds the disordered ground state of the compass model with high degeneracy $2\times 2^{N/2}$ in the limit of $N\to\infty$.
description: 6 pages, 4 figures
Thermal Conductivity Modeling of Monodispersed Microspheres using Discrete Element Method
Creators: name: Zeng, Jian
name: Chung, Ka Man
name: Zhang, Xintong
name: Adapa, Sarath
name: Feng, Tianshi
name: Pei, Yu
name: Chen, Renkun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Particle beds are widely used in various systems and processes, such as particle heat exchangers, granular flow reactors, and additive manufacturing. Accurate modeling of thermal conductivity of particle beds and understanding of their heat transfer mechanisms are important. However, previous models were based on a simple cubic packing of particles which could not accurately represent the actual heat transfer processes under certain conditions. Here, we examine the effect of the packing structure on thermal conductivity of particle beds. We use monodispersed silica microspheres with average article sizes ranging from 23 to 330 um as a model material. We employ a transient hot-wire technique to measure the thermal conductivity of the particle beds with packing density of 43 to 57% within a temperature range of room temperature to 500 deg. C and under N2 gaseous pressures of 20 to 760 Torr. We then use a discrete element method (DEM) to obtain the realistic packing structure of the particles, which is then fed into a finite-element model (FEM) to calculate the thermal conductivity, with the consideration of solid conduction, gas conduction, and radiation heat transfer. Our results show that the thermal conductivity model based on the more realistic random packing structure derived from the DEM shows better agreement with the experimental data compared to that based on the simple cubic packing structure. The combined DEM and FEM methodology can serve as a useful tool to predict effective thermal conductivity of particle beds and to quantify different heat transfer mechanisms under various conditions.
description: 23 pages, 6 figures
Testing the SUSY-QCD Yukawa coupling in a combined LHC/ILC analysis
Creators: name: Freitas, A.
name: Skands, P. Z.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In order to establish supersymmetry (SUSY) at future colliders, the identity of gauge couplings and the corresponding Yukawa couplings between gauginos, sfermions and fermions needs to be verified. Here a first phenomenological study for determining the Yukawa coupling of the SUSY-QCD sector is presented, using a method which combines information from LHC and ILC.
description: 5pp, slightly expanded version of contributions to the Proc. of the Linear Collider Workshop (LCWS 06), Bangalore, India, 9-13 March 2006, and the Proc. of the 14th International Conference on Supersymmetry and the Unification of Fundamental Interactions (SUSY 06), Irvine, California, USA, 12-17 June 2006
Time-Dependent Stochastic Particle Acceleration in Astrophysical Plasmas: Exact Solutions Including Momentum-Dependent Escape
Creators: name: Becker, P. A.
name: Le, T.
name: Dermer, C. D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Stochastic acceleration of charged particles due to interactions with magnetohydrodynamic (MHD) plasma waves is the dominant process leading to the formation of the high-energy electron and ion distributions in a variety of astrophysical systems. Collisions with the waves influence both the energization and the spatial transport of the particles, and therefore it is important to treat these two aspects of the problem in a self-consistent manner. We solve the representative Fokker-Planck equation to obtain a new, closed-form solution for the time-dependent Green's function describing the acceleration and escape of relativistic ions interacting with Alfven or fast-mode waves characterized by momentum diffusion coefficient $D(p)\propto p^q$ and mean particle escape timescale $t_esc(p) \propto p^{q-2}$, where $p$ is the particle momentum and $q$ is the power-law index of the MHD wave spectrum. In particular, we obtain solutions for the momentum distribution of the ions in the plasma and also for the momentum distribution of the escaping particles, which may form an energetic outflow. The general features of the solutions are illustrated via examples based on either a Kolmogorov or Kraichnan wave spectrum. The new expressions complement the results obtained by Park and Petrosian, who presented exact solutions for the hard-sphere scattering case ($q=2$) in addition to other scenarios in which the escape timescale has a power-law dependence on the momentum. Our results have direct relevance for models of high-energy radiation and cosmic-ray production in astrophysical environments such as $γ$-ray bursts, active galaxies, and magnetized coronae around black holes.
description: Accepted for publication in ApJ
La creazione del distretto comunale: Il caso di Reggio Emilia (XII-prima metà XIII secolo)
The creation of the Commune district: the case of Reggio Emilia (XII-first half XIII century)
Creators: name: Cavalazzi, Marco <1981>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: M-STO/01 Storia medievale

description: L’oggetto della ricerca è stato il processo di creazione del distretto del Comune di Reggio Emilia tra il XII e l’inizio del XIII secolo, di cui sono stati analizzati diversi aspetti salienti, così come emergono in primo luogo dall’analisi del liber iurium reggiano, il Liber grossus antiquus. L’elaborato è suddiviso in due parti. Nella prima parte  si è cercato di ricostruire le vicende, i legami e il patrimonio delle famiglie rurali reggiane nel corso del XII secolo in particolare e gli aspetti caratteristici del Comune cittadino nella sua fase iniziale. Nella seconda parte ci si è concentrati sull’analisi dei caratteri più rilevanti del processo di creazione del distretto comunale reggiano: il rapporto tra i signori del contado, i Comuni rurali e il Comune urbano; la difesa e l’incremento dei Communia cittadini; la fondazione di borghi franchi e nuovi. Il Comune di Reggio Emilia tentò di annettere l’intero territorio diocesano al distretto cittadino, non riuscendoci completamente e adottando una politica territoriale diversificata a seconda dei caratteri delle zone controllate.
description: The object of the research has been the process of creation of the Reggio Emilia Commune district between the twelfth and early thirteenth century, of which several important aspects have been analyzed, as they emerged in particular from the analysis of the Reggio liber iurium, the Liber grossus antiquus. The study is divided into two parts. The first, in which we tried to reconstruct the events, the feudal links and the possessions of rural families of Reggiano (in particular during the twelfth century) and the characteristic aspects of the urban Commune in its first phase. The second, in which the focus was the analysis of the most important characters of the process of creation of Reggio Emilia Commune district: the relationship between the lords of the contado, the rural Communes and the urban one; the defense and the increase of city Communia; the creation of “borghi franchi” and “borghi nuovi”. The Commune of Reggio Emilia tried to annex the entire diocesan territory to the city district, adopting a different territorial policy in base of the characters of the controlled areas.
Energy-efficient Communication and
Estimation in Wireless Sensor
Networks
Creators: name: Zambianchi, Vincenzo <1987>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: ING-INF/03 Telecomunicazioni

description: This thesis focuses on the energy efficiency in wireless networks under
the transmission and information diffusion points of view. In particular,
on one hand, the communication efficiency is investigated,
attempting to reduce the consumption during transmissions, while on
the other hand the energy efficiency of the procedures required to distribute
the information among wireless nodes in complex networks is
taken into account.
For what concerns energy efficient communications, an innovative
transmission scheme reusing source of opportunity signals is introduced.
This kind of signals has never been previously studied in literature
for communication purposes. The scope is to provide a way for
transmitting information with energy consumption close to zero. On
the theoretical side, starting from a general communication channel
model subject to a limited input amplitude, the theme of low power
transmission signals is tackled under the perspective of stating sufficient
conditions for the capacity achieving input distribution to be
discrete.
Finally, the focus is shifted towards the design of energy efficient
algorithms for the diffusion of information. In particular, the endeavours
are aimed at solving an estimation problem distributed over a
wireless sensor network. The proposed solutions are deeply analyzed
both to ensure their energy efficiency and to guarantee their robustness
against losses during the diffusion of information (against information
diffusion truncation more in general).
Καθοδήγηση μέσω ρομπότ κοινωνικής αλληλεπίδρασης
Creators: name: Σαρασλανίδης, Ιωάννης Πλούταρχου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Ρομποτική
ΝΑΟ
Άνοια
Robotics
NAO
Dementia

description: Σκοπός της διατριβής ήταν να αναπαράγουμε τις δραστηριότητες αυτές που μειώνουν τον κίνδυνο της άνοιας χρησιμοποιώντας ρομποτική αλληλεπίδραση με τον χρήστη (Συγκεκριμένα τον ΝΑΟ). Θέλουμε να δούμε τις διαφορές, αν υπάρχουν, στην αντιμετώπιση της αλληλεπίδρασης αυτής σε ηλικιωμένους που ζουν σε οίκο ευγηρίας με τις έρευνες που έχουν ήδη γίνει καθώς και τις προτιμήσεις τους στις δραστηριότητες. Απώτερος στόχος μας είναι να βελτιώσουμε το βιοτικό επίπεδο των ηλικιωμένων
description: The aim of the present thesis was to reproduce activities that reduce the risk of dementia using robotic interaction with the user (namely NAO). We want to see the differences, if any, in addressing this interaction among elderly people living in a nursing home with the research already done and their preferences in activities. Our ultimate goal is to improve the standard of living of the elderly
description: Σε συνεργασία με το τμήμα Λογιστικής και Χρηματοοικονομικής (Πανεπιστήμιο Μακεδονίας)
Temporal sequencing, nominal tone melodies, H tone spreading
Creators: name: Koutouan, Evelyne
name: Jarvis, Rebecca
name: Russell, Katherine
name: Kouadio, Timothée
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: ebr

description: Elicitation of aspect in contexts involving temporally sequenced events. Exploration of possible tone melodies on nouns as well as effects of H-final subjects on following material. Includes a brief self-introduction text at the end.
Schur expansion of random-matrix reproducing kernels
Creators: name: Santilli, Leonardo
name: Tierz, Miguel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We give expansions of reproducing kernels of the Christoffel-Darboux type in terms of Schur polynomials. For this, we use evaluations of averages of characteristic polynomials and Schur polynomials in random matrix ensembles. We explicitly compute new Schur averages, such as the Schur average in a $q$-Laguerre ensemble, and the ensuing expansions of random matrix kernels. In addition to classical and $q$-deformed cases on the real line, we use extensions of Dotsenko-Fateev integrals to obtain expressions for kernels on the complex plane. Moreover, a known interplay between Wronskians of Laguerre polynomials, Painlevé tau functions and conformal block expansions is discussed in relationship to the Schur expansion obtained.
description: 26 pages. v2: minor revision, references added. Published version
Probing charge density wave phases and the Mott transition in $1T$-TaS$_2$ by inelastic light scattering
Creators: name: Mijin, S. Đurđić
name: Baum, A.
name: Bekaert, J.
name: Šolajić, A.
name: Pešić, J.
name: Liu, Y.
name: He, Ge
name: Milošević, M. V.
name: Petrovic, C.
name: Popović, Z. V.
name: Hackl, R.
name: Lazarević, N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a polarization-resolved, high-resolution Raman scattering study of the three consecutive charge density wave (CDW) regimes in $1T$-TaS$_2$ single crystals, supported by \textit{ab initio} calculations. Our analysis of the spectra within the low-temperature commensurate (C-CDW) regime shows $\mathrm{P3}$ symmetry of the system, thus excluding the previously proposed triclinic stacking of the "star-of-David" structure, and promoting trigonal or hexagonal stacking instead. The spectra of the high-temperature incommensurate (IC-CDW) phase directly project the phonon density of states due to the breaking of the translational invariance, supplemented by sizeable electron-phonon coupling. Between 200 and 352\,K, our Raman spectra show contributions from both the IC-CDW and the C-CDW phase, indicating their coexistence in the so-called nearly-commensurate (NC-CDW) phase. The temperature-dependence of the symmetry-resolved Raman conductivity indicates the stepwise reduction of the density of states in the CDW phases, followed by a Mott transition within the C-CDW phase. We determine the size of the Mott gap to be $Ω_{\rm gap}\approx 170-190$ meV, and track its temperature dependence.
An electron beam lithography system: setup and characterization
Creators: name: Busch, Alexander Anthony
Publisher: name: University of British Columbia
Year: 2009

description: An electron beam lithography system was realized by externally controlling a Hitachi S-4 100 field emission scanning electron microscope with a computer. Associated facilities were established for applying resist layers to substrates and for developing and etching exposed patterns. Procedures for the system’s use were developed and optimized as it is anticipated that many researchers will use the system in the future. The system’s performance was characterized with importance being placed on those issues that impacted on the goal of achieving sub 50 nm resolution with high pattern uniformity. The results were found to depend on many parameters including the resist thickness, resist composition, development time, and the specific pattern that was written. Resolutions of—50 nm with feature spacings of -200 rim were achieved in polymethylmethacrylate (PMMA) resist layers —200 imi thick. Indications are that moving to thinner resist layers, shorter development times, and higher contrast developers will enable better resolution to be achieved in the future. Nonuniformities on the order of -10 nm over —5 p.m scales have been achieved on both line and dot array patterns. These patterns were emphasized because of their applications in distributed feedback semiconductor lasers, and in the construction of artificial atom arrays. Systematic and random noise limitations were encountered that require further investigation to improve the uniformity beyond this level. Several patterning and processing concerns were also investigated to provide data important for the design of devices that incorporate nanometre scale structures. The most important issues are a limitation on the overall pattern size due to a fluctuating beam current, and a rotation effect that changes the orientation of the patterns on the substrate as the beam energy and working distance are varied.
Universal deformation rings and dihedral defect groups
Creators: name: Bleher, Frauke M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Representation Theory (math.RT)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 20C20; 20C15; 16G10

description: Let k be an algebraically closed field of characteristic 2, and let W be the ring of infinite Witt vectors over k. Suppose G is a finite group, and B is a block of kG with dihedral defect group D which is Morita equivalent to the principal 2-modular block of a finite simple group. We determine the universal deformation ring R(G,V) for every kG-module V which belongs to B and has stable endomorphism ring k. It follows that R(G,V) is always isomorphic to a subquotient ring of WD. Moreover, we obtain an infinite series of examples of universal deformation rings which are not complete intersections.
description: 37 pages, 13 figures. Changed introduction, updated references
Ο χρόνος έναρξης της παραγραφής στον ΑΚ
Creators: name: Κωνσταντινίδης, Νικόλαος Παρμενίων Σωτηρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Παραγραφή
Αξίωση
Έναρξη
Statute of limitation
Claim
Commencement

description: Το περιεχόμενο της παρούσας διατριβής ήταν το ζήτημα του χρόνου έναρξης της παραγραφής στον ΑΚ. Η θέσπιση χρόνου παραγραφής είναι κοινό χαρακτηριστικό των νομικών συστημάτων των κρατών του Δυτικού Κόσμου, και αποσκοπεί στο να εγγυηθεί την ασφάλεια δικαίου ορίζοντας όριο στις δράσεις και στο να εμποδίσει την αδικία που θα μπορούσε να προκύψει, εάν τα δικαστήρια έπρεπε να αποφανθούν για γεγονότα που συνέβησαν στο μακρινό παρελθόν. Η παραπάνω σημασία της παραγραφής αποτέλεσε κίνητρο να αναλύσουμε κυρίως το χρόνο έναρξης της, σύμφωνα με τις διατάξεις των άρθρων 251 έως 254 ΑΚ. Παράλληλα, αναλύσαμε τον χρόνο έναρξης της παραγραφής σε ειδικές αξιώσεις, όπως στην 554 ΑΚ, 693 ΑΚ, 937 ΑΚ και 1401 ΑΚ. Επιπρόσθετα, εξετάσαμε συγκεκριμένες προβληματικές αναφορικά με το χρόνο έναρξης, καθώς και τις λύσεις που εφαρμόστηκαν από το Ανώτατο Ακυρωτικό. Τέλος, επιχειρήσαμε να δώσουμε απάντηση για το λόγο που ο νομοθέτης δεν έθεσε ενιαία έναρξη της παραγραφής σε όλες τις αξιώσεις.
description: The topic of the present thesis was the commencement of statute of limitation in the Civil Code. The enactment statue of limitation is a common feature of the domestic legal systems of the Contracting States, ensured legal certainty and prevented the injustice which might arise if courts were required to decide upon events which took place in the distant past. The above importance of the statute of limitation became a motive for analyzing mainly with the commencement, according to law articles 251 to 254 C.C. Also, we analyzed the commencement of the statute of limitation in special claims, such as 554 C.C., 693 C.C., 937 C.C. and 1401 C.C. Furthermore, we examined specific problems related to the commencement of the statute of limitation, as well as the solutions applied by the Supreme Court of Justice. Finally, we tried to give an answer to the question why the legislator didn’t set the same commencement of statute of limitation to all claims.
Cosmology and the Bispectrum
Creators: name: Sefusatti, Emiliano
name: Crocce, Martin
name: Pueblas, Sebastian
name: Scoccimarro, Roman
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The present spatial distribution of galaxies in the Universe is non-Gaussian, with 40% skewness in 50 Mpc/h spheres, and remarkably little is known about the information encoded in it about cosmological parameters beyond the power spectrum. In this work we present an attempt to bridge this gap by studying the bispectrum, paying particular attention to a joint analysis with the power spectrum and their combination with CMB data. We address the covariance properties of the power spectrum and bispectrum including the effects of beat coupling that lead to interesting cross-correlations, and discuss how baryon acoustic oscillations break degeneracies. We show that the bispectrum has significant information on cosmological parameters well beyond its power in constraining galaxy bias, and when combined with the power spectrum is more complementary than combining power spectra of different samples of galaxies, since non-Gaussianity provides a somewhat different direction in parameter space. In the framework of flat cosmological models we show that most of the improvement of adding bispectrum information corresponds to parameters related to the amplitude and effective spectral index of perturbations, which can be improved by almost a factor of two. Moreover, we demonstrate that the expected statistical uncertainties in sigma8 of a few percent are robust to relaxing the dark energy beyond a cosmological constant.
description: 28 pages, 14 figures. Added appendix with results updated to WMAP 3-year data. Revised version accepted for publication in Phys. Rev. D