cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Scenarios of future Indian electricity demand accounting for space cooling and electric vehicle adoption
Creators: name: Barbar, Marc
name: Mallapragada, Dharik
name: Alsup, Meia
name: Stoner, Robert
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: India is expected to witness rapid growth in electricity use over the next two decades. Here, we introduce a custom regression model to project electricity consumption in India over the coming decades, which includes a bottom-up estimate of electricity consumption for two major growth drivers, air conditioning, and vehicle electrification. The model projections are available at a customizable level of spatial aggregation at an hourly temporal resolution, which makes them useful as inputs to long-term electricity infrastructure planning studies. The approach is used to develop electricity consumption data sets spanning various technology adoption and growth scenarios up to the year 2050 in five-year increments. The aim of the data is to provide a range of scenarios for India's demand growth given new technology adoption. With long-term hourly demand projections serving as an essential input for electricity infrastructure modeling, this data publication enables further work on energy efficiency, generation, and transmission expansion planning for a fast-growing and increasingly important region from a global climate mitigation perspective.
Velocity distribution of collapsing starless cores, L694-2 and L1197
Creators: name: Lee, Seok Ho
name: Park, Yong-Sun
name: Sohn, Jungjoo
name: Lee, Chang Won
name: Lee, Hyung Mok
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In an attempt to understand the dynamics of collapsing starless cores, we have onducted a detailed investigation of the velocity fields of two collapsing cores, L694-2 and L1197, with high spatial resolution HCN J=1-0 maps and Monte Carlo radiative transfer alculation. It is found that infall motion is most active in the middle and outer layers outside the central density-flat region, while both the central and outermost parts of the cores are static or exhibit slower motion. Their peak velocities are 0.28 km s^{-1} for L694-2 and 0.20 km s^{-1$ for L1197, which could not be found in simple models. These velocity fields are roughly consistent with the gravitational collapse models of the isothermal core; However, the velocity gradients inside the peak velocity position are steeper than those of the models. Our results also show that the density distributions are ~ r^{-2.5} and ~ r^{-1.5} in the outer part for L694-2 and L1197, respectively. HCN abundance relative to H_2 is spatially almost constant in L694-2 with a value of 7.0 X 10^{-9}, while for L1197, it shows a slight inward increase from 1.7 X 10^{-9} to 3.5 X 10^{-9}.
description: accepted in ApJ
Monte Carlo Investigation of Anomalous Transport in presence of a Discontinuity and of an Advection Field
Creators: name: Marseguerra, Marzio
name: Zoia, Andrea
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Anomalous diffusion has recently turned out to be almost ubiquitous in transport problems. When the physical properties of the medium where the transport process takes place are stationary and constant at each spatial location, anomalous transport has been successfully analyzed within the Continuous Time Random Walk (CTRW) model. In this paper, within a Monte Carlo approach to CTRW, we focus on the particle transport through two regions characterized by different physical properties, in presence of an external driving action constituted by an additional advective field, modeled within both the Galilei invariant and Galilei variant schemes. Particular attention is paid to the interplay between the distributions of space and time across the discontinuity. The resident concentration and the flux of the particles are finally evaluated and it is shown that at the interface between the two regions the flux is continuous as required by mass conservation, while the concentration may reveal a neat discontinuity. This result could open the route to the Monte Carlo investigation of the effectiveness of a physical discontinuity acting as a filter on particle concentration.
GLIB: Towards Automated Test Oracle for Graphically-Rich Applications
Creators: name: Chen, Ke
name: Li, Yufei
name: Chen, Yingfeng
name: Fan, Changjie
name: Hu, Zhipeng
name: Yang, Wei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: D.2.5; I.2.10
subject: 68N01, 68T45

description: Graphically-rich applications such as games are ubiquitous with attractive visual effects of Graphical User Interface (GUI) that offers a bridge between software applications and end-users. However, various types of graphical glitches may arise from such GUI complexity and have become one of the main component of software compatibility issues. Our study on bug reports from game development teams in NetEase Inc. indicates that graphical glitches frequently occur during the GUI rendering and severely degrade the quality of graphically-rich applications such as video games. Existing automated testing techniques for such applications focus mainly on generating various GUI test sequences and check whether the test sequences can cause crashes. These techniques require constant human attention to captures non-crashing bugs such as bugs causing graphical glitches. In this paper, we present the first step in automating the test oracle for detecting non-crashing bugs in graphically-rich applications. Specifically, we propose \texttt{GLIB} based on a code-based data augmentation technique to detect game GUI glitches. We perform an evaluation of \texttt{GLIB} on 20 real-world game apps (with bug reports available) and the result shows that \texttt{GLIB} can achieve 100\% precision and 99.5\% recall in detecting non-crashing bugs such as game GUI glitches. Practical application of \texttt{GLIB} on another 14 real-world games (without bug reports) further demonstrates that \texttt{GLIB} can effectively uncover GUI glitches, with 48 of 53 bugs reported by \texttt{GLIB} having been confirmed and fixed so far.
description: ESEC/FSE 2021
Electromagnetic field generated by a charge moving along a helical orbit inside a dielectric cylinder
Creators: name: Saharian, A. A.
name: Kotanjyan, A. S.
name: Grigoryan, M. L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The electromagnetic field generated by a charged particle moving along a helical orbit inside a dielectric cylinder immersed into a homogeneous medium is investigated. Expressions are derived for the electromagnetic potentials, electric and magnetic fields in the region inside the cylinder. The parts corresponding to the radiation field are separated. The radiation intensity on the lowest azimuthal mode is studied.
description: 14 pages, 2 figures
Από τη ληστεία στη πολιτική δίωξη: Οι διοικητικοί εκτοπισμοί στην Ελλάδα 1871-1929
Creators: name: Κουθούρης, Παναγιώτης Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Ληστεία
Πολιτική δίωξη
Εκτοπισμοί
Banditry
Political persecution
Administrative expulsion

description: Η παρούσα εργασία αναφέρεται στο φαινόμενο του διοικητικού εκτοπισμού, έτσι όπως εφαρμόστηκε στην Ελλάδα, και στον τρόπο με τον οποίο η μέθοδος αυτή μετατράπηκε σε κεντρικό οπλοστάσιο δίωξης πολιτικών αντιπάλων. Αρχικά, εστιάζουμε στο πως ξεκίνησε να εφαρμόζεται η εκτόπιση στο ζήτημα της δίωξης της ληστείας, ενός φαινομένου που χαρακτηρίζει ολόκληρο τον 19ο αιώνα και τον αγώνα του φιλόδοξου κράτους να επιβάλλει τη θέλησή του στο σύνολο της επικράτειας που ήλεγχε. Στη συνέχεια, η έρευνα επικεντρώνεται στο πως το νομικό οπλοστάσιο δίωξης της ληστείας θα μετασχηματιστεί σε ένα κεντρικό μέσο πολιτικής καταπίεσης με αφορμή την άνοδο του συνδικαλισμού και του εργατικού κινήματος. Αργότερα, στο στόχαστρο ομοίως θα τεθεί το ίδιο το κομμουνιστικό κίνημα, τα όργανά του και η ιδεολογία του με τις ίδιες πρακτικές καταπίεσης και με επίκεντρο τη μέθοδο του εκτοπισμού. Απώτερος σκοπός είναι να επισημανθούν οι ιστορικές συνέχεις και οι τομές στην εφαρμογή της μεθόδου του εκτοπισμού σε διαφορετικές ιστορικές φάσεις της συγκρότησης του ελληνικού κράτους
description: The present paper refers to the phenomenon of administrative expulsion, thus as implemented in Greece and in the way that the process is converted into the central armory for the persecution of political opponents. First, we focus on how the method of expulsion started to apply on the question of banditry prosecution, a phenomenon which characterizes the ambitious state to impose his will on the whole territory which was supposed to be under the absolute control of the state. Subsequently, the research focuses on how the legal prosecution of robbery will be transformed into a basic instrument of political repression, in response of the rise of unionism and the labor movement. Later, the communist movement itself, its organs and its ideology will become the main target of the same repressive practices. The ultimate goal is to identify the historical continuities and the sections in the implement of the method of administrative expulsion in different historical phases of the formation of the Greek state
Deep infrared observations of the puzzling central X-ray source in RCW103
Creators: name: De Luca, A.
name: Mignani, R. P.
name: Zaggia, S.
name: Beccari, G.
name: Mereghetti, S.
name: Caraveo, P. A.
name: Bignami, G. F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: 1E 161348-5055 (1E 1613) is a point-like, soft X-ray source originally identified as a radio-quiet, isolated neutron star, shining at the center of the 2000 yr old supernova remnant RCW103. 1E 1613 features a puzzling 6.67 hour periodicity as well as a dramatic variability over a time scale of few years. Such a temporal behavior, coupled to the young age and to the lack of an obvious optical counterpart, makes 1E 1613 a unique source among all compact objects associated to SNRs. It could either be the first low-mass X-ray binary system discovered inside a SNR, or a peculiar isolated magnetar with an extremely slow spin period. Analysis of archival IR observations, performed in 2001 with the VLT/ISAAC instrument, and in 2002 with the NICMOS camera onboard HST unveils a very crowded field. A few sources are positionally consistent with the refined X-ray error region that we derived from the analysis of 13 Chandra observations. To shed light on the nature of 1E 1613, we have performed deep IR observations of the field with the NACO instrument at the ESO/VLT, searching for variability. We find no compelling reasons to associate any of the candidates to 1E 1613. On one side, within the frame of the binary system model for the X-ray source, it is very unlikely that one of the candidates be a low-mass companion star to 1E 1613. On the other side, if the X-ray source is an isolated magnetar surrounded by a fallback disc, we cannot exclude that the IR counterpart be hidden among the candidates. If none of the potential counterparts is linked to the X-ray source, 1E 1613 would remain undetected in the IR down to Ks>22.1. Such an upper limit is consistent only with an extremely low-mass star (an M6-M8 dwarf) at the position of 1E 1613, and makes rather problematic the interpretation of 1E 1613 as an accreting binary system.
description: 26 pages, 5 figures. Accepted for publication in ApJ
Finite element image reconstruction in microwave ablation treatment
Creators: name: Κατριοπλάς, Κωνσταντίνος-Δημήτριος Σταύρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Πεπερασμένα στοιχεία
Απεικόνιση
Μικροκυματικός καυτηριασμός
Finite elements
Imaging
Microwave ablation

description: Η αξιόπιστη απεικόνιση των βιολογικών ιστών κατά την διάρκεια του μικροκυματικού καυτηριασμού είναι κρίσιμη στο αποτέλεσμα της θεραπείας του καρκίνου. Η αξιολόγηση της υπό καυτηριασμό περιοχής σε πραγματικό χρόνο βασίζεται στην αλλαγή των διηλεκτρικών ιδιοτήτων της γύρω περιοχής. Έγινε προσομοίωση τομογραφίας ηλεκτρικού δυναμικού (EIT) για να ανακατασκευαστούν εικόνες ενός ρεαλιστικού μοντέλου μιας 26-χρονης γυναίκας κατά την διάρκεια 10-λεπτης θεραπείας στα 2,45 GΗz. Αντί για πραγματικές μετρήσεις του δυναμικού λύθηκε το ηλεκτροστατικό πεδίο χρησιμοποιώντας την μέθοδο πεπερασμένων στοιχείων (FEM). Εφαρμόστηκε ο αλγόριθμος ανακατασκευής Gauss-Newton μέσω του ανοιχτού λογισμικού EIDORS. Τα αποτελέσματα της προσομοίωσης δείχνουν την δυνατότητα ανακατασκευής της εικόνας σε πραγματικό χρόνο χρησιμοποιώντας την EIT. Η μέση τιμή της αγωγιμότητας στην περιοχή του όγκου υποδεικνύει σφάλμα μικρότερο του 5% από την υποτιθέμενη τιμή της αγωγιμότητας στο τέλος της θεραπείας
description: Reliable imaging of biological tissues during microwave ablation is crucial to the effect of cancer treatment. Real time evaluation of the ablated area is based upon the change of the dialectrical properties of the surrounding tissue. In silico electrical impedance tomography (EIT) is used to reconstruct images of a 26-year old realistic human model during a 10-minute treatment at 2.45 GHz. In place of real voltage measurements, the electrostatic field is solved using the FEM. Gauss–Newton reconstruction algorithm is implemented to obtain images via the open source numerical suite EIDORS. Simulation results evidence the possibility of real-time image reconstruction using EIT. Average electrical conductivity value of the tumor area indicates an error of less than 5% of the assumed value at the end of the treatment
Extrinsci radius pinching in space forms of nonnegative sectional curvature
Creators: name: Roth, Julien
Publisher: name: arXiv
Year: 2006
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53A07; 53C20; 53C21

description: We give new estimates for the extrinsic radius of compact hypersurfaces of the Euclidean space and the open hemisphere in terms of high order mean curvatures. Then we prove pinching results corresponding to theses estimates. We show that under a suitable pinching condition, the hypersurface is diffeomorphic and almost isometric to a geodesic hypersphere.
description: 16 pages
A nonlinear hidden layer enables actor-critic agents to learn multiple paired association navigation
Creators: name: Kumar, M Ganesh
name: Tan, Cheston
name: Libedinsky, Camilo
name: Yen, Shih-Cheng
name: Tan, Andrew Yong-Yi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Navigation to multiple cued reward locations has been increasingly used to study rodent learning. Though deep reinforcement learning agents have been shown to be able to learn the task, they are not biologically plausible. Biologically plausible classic actor-critic agents have been shown to learn to navigate to single reward locations, but which biologically plausible agents are able to learn multiple cue-reward location tasks has remained unclear. In this computational study, we show versions of classic agents that learn to navigate to a single reward location, and adapt to reward location displacement, but are not able to learn multiple paired association navigation. The limitation is overcome by an agent in which place cell and cue information are first processed by a feedforward nonlinear hidden layer with synapses to the actor and critic subject to temporal difference error-modulated plasticity. Faster learning is obtained when the feedforward layer is replaced by a recurrent reservoir network.
description: 31 pages, 8 figures. Acknowledgements revised
Σωματική άσκηση και ηγεσία: Ο θετικός ρόλος της σωματικής άσκησης των προϊσταμένων στη διαμόρφωση των αντιλήψεων των υφισταμένων
Creators: name: Παπαδόπουλος, Αλέξανδρος Δαυίδ
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: φυσική κατάσταση ηγέτη
σωματική άσκηση
θεωρία συναλλαγής ηγέτη-μέλους
leader physical fitness
physical exercise
transaction theory leader-member

description: Η παρούσα διπλωματική εργασία μελετά τη σχέση μεταξύ της φυσικής κατάστασης των προϊσταμένων όπως αυτή εκλαμβάνεται από τους υφισταμένους και κατά πόσο αυτή η αντίληψη επηρεάζει τoν σεβασμό (perceived respect) και την αποτελεσματικότητα του προϊσταμένου (leader effectiveness). Αρχικά γίνεται ανασκόπηση της ειδικής αρθρογραφίας σχετικά με την φυσική κατάσταση, τις επιδράσεις της σωματικής δραστηριότητας στην ψυχολογική ευεξία και την ικανότητα εργασίας και της σύνδεσης τους με τις μεταβλητές που συμπεριλήφθηκαν στο συγκεκριμένο ερευνητικό μοντέλο. Στη συνέχεια, αναλύονται τα αποτελέσματα της εμπειρικής έρευνας που διεξήχθη σε 136 εργαζομένους τα οποία αποδεικνύουν πως υπάρχει θετική συσχέτιση μεταξύ της συχνότητας άσκησης του προϊσταμένου με την αντιλαμβανόμενη εκτίμηση προς τον προϊστάμενο καθώς και με την αντιλαμβανόμενη αποτελεσματικότητα του προϊσταμένου.Τέλος, επισημαίνονται κάποιες πρακτικές εφαρμογές για τα διοικητικά στελέχη των οργανισμών ,οι περιορισμοί της έρευνας και οι προτάσεις για μελλοντική έρευνα
description: In the beggining an overview is done of the special editorial on the physical condition, the effects of physical activity on psychological well-being and ability to work and their association with the variables included in this research model. Then, the results of empirical research analyzes conducted on 136 workers which demonstrate that there is a positive correlation between exercise frequency of the leader with the perceived appreciation to the leader as well as the perceived effectiveness of the leader. Finally, highlighted some practical applications for managers of organizations with research limitations and suggestions for future research
Four-nucleon scattering: Ab initio calculations in momentum space
Creators: name: Deltuva, A.
name: Fonseca, A. C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The four-body equations of Alt, Grassberger and Sandhas are solved for $\nH$ scattering at energies below three-body breakup threshold using various realistic interactions including one derived from chiral perturbation theory. After partial wave decomposition the equations are three-variable integral equations that are solved numerically without any approximations beyond the usual discretization of continuum variables on a finite momentum mesh. Large number of two-, three- and four-nucleon partial waves are considered until the convergence of the observables is obtained. The total $\nH$ cross section data in the resonance region is not described by the calculations which confirms previous findings by other groups. Nevertheless the numbers we get are slightly higher and closer to the data than previously found and depend on the choice of the two-nucleon potential. Correlations between the $A_y$ deficiency in $\nd$ elastic scattering and the total $\nH$ cross section are studied.
description: Corrected Eq. (10)
On the structure of $α$-limit sets of backward trajectories for graph maps
Creators: name: Foryś-Krawiec, Magdalena
name: Hantáková, Jana
name: Oprocha, Piotr
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: In the paper we study what sets can be obtained as $α$-limit sets of backward trajectories in graph maps. We show that in the case of mixing maps, all those $α$-limit sets are $ω$-limit sets and for all but finitely many points $x$, we can obtain every $ω$-limits set as the $α$-limit set of a backward trajectory starting in $x$. For zero entropy maps, every $α$-limit set of a backward trajectory is a minimal set. In the case of maps with positive entropy, we obtain a partial characterization which is very close to complete picture of the possible situations.
A Note on the Local Cosmological Constant and the Dark Energy Coincidence Problem
Creators: name: Tajmar, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It has been suggested that the Dark Energy Coincidence Problem could be interpreted as a possible link between the cosmological constant and a massive graviton. We show that by using that link and models for the graviton mass a dark energy density can be obtained that is indeed very close to measurements by WMAP. As a consequence of the models, the cosmological constant was found to depend on the density of matter. A brief outline of the cosmological consequences such as the effect on the black hole solution is given.
Ο αλγόριθμος Two-Phase για την επίλυση του κύβου Rubik
Creators: name: Κούτρας, Γεώργιος Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Κύβος Ρούμπικ
Αλγόριθμος
Two-Phase
Rubik’s cube
Algorithm

description: Η παρούσα εργασία αναπτύχθηκε στα πλαίσια του Μεταπτυχιακού Προγράμματος Σπουδών «Θεωρητική Πληροφορική και Θεωρία Συστημάτων Αυτομάτου Ελέγχου» και αφορά τη μελέτη του Κύβου του Rubik καθώς και ενός αλγορίθμου για την επίλυση του. Σκοπός της είναι η εύρευση, η ανάλυση και κατανόηση και τέλος η ανάπτυξη σε κώδικα, ενός “optimal” αλγορίθμου για την επίλυση του κύβου. Ο αλγόριθμος που επιλέχθηκε είναι ο “Two-Phase Algorithm” ο οποίος αναπτύχθηκε από τον καθηγητή Herbert Kociemba. Για την καλύτερη κατανόηση και κυρίως παρουσίαση του αλγορίθμου, αναπτύχθηκε λογισμικό (πρόγραμμα-παιχνίδι) με γραφικά 3D, όπου ο χρήστης μπορεί να «μπερδεύει» έναν εικονικό κύβο και στη συνέχεια να ζητάει τη λύση του, η οποία θα του προσφέρεται με τη μορφή των απαιτούμενων κινήσεων. Στην εργασία λοιπόν που ακολουθεί, παρουσιάζεται αρχικά το πρόβλημα της λύσης του κύβου με όσο το δυνατόν λιγότερες κινήσεις και η πορεία του από την εφεύρευση του κύβου εώς και σήμερα, αναλύεται ο αλγόριθμος Two-Phase και τέλος γίνεται μια περιγραφή του κώδικα του λογισμικού (γραφικά, σχεδίαση,...). Ακόμη, παρατίθεται ένα εγχειρίδιο χρήσης του λογισμικού που συνοδέυει την εργασία
description: The following thesis is developed due to the MSc program “Theoretical Computer Science and Automatic Control Theory Systems” and it’s related to Rubik’s Cube and an optimal algorithm solving it. The objective, is to find, analyze, comprehend and finally develop into program an optimal algorithm concerning the Rubik’s Cube solution problem. The chosen algorithm is the “Two-Phase Algorithm” produced by Professor Herbert Kociemba. In order to fully understand the algorithm and it’s function, a software (game-program) was developed using 3D graphics, where the user is able to scramble an iconic cube and thereinafter ask for the optimal solution, which is given as a sequence of the required steps (moves). Initially, there is a description about the general problem of finding the shortest solution for any scrambled cube and how this problem developed through the years following the birth of Rubik’s Cube until today. Afterwards, the Two-Phase algorithm is detailed described as well as the source code of the software, which is included in this thesis. In the end, there is a sort manual considering the software and how to use it
Sites of humanism : intimate encounters within Black feminist geographies
Creators: name: Davis, Kiara Icely
Publisher: name: The University of Texas at Austin
Year: 2020
Subjects: English
Cultural geography

description: Sites of Humanism: Intimate Encounters Within Black Feminist Geographies explores Black women’s creation and engagement with places and spaces. In particular, these selected essays consider Black women’s ability to turn oppressive or constraining structures, systems, and theories of knowledge into what Dr. Ashanté Reese calls, spaces of “containment but not confinement.” The collection begins by reflecting on two Black geographical frameworks of the human problem, W.E.B. Du Bois’ Veil/veil and Sylvia Wynter’s demonic. I consider material accounts of these racialized geographies in The Souls of Black Folk and Harriet Ann Jacobs’ slave narrative, Incidents in the Life of a Slave Girl. The piece closes by reading Saidiya Hartman’s use of critical fabulation in Wayward Lives, Beautiful Experiments as an aspect of the demonic grounds, and a site of opportunity for an important epistemological break for our understanding of the human. The next essay analyzes Black exploitation in Stanley Kubrick’s The Shining. Film offers a level of visibility that is reminiscent of Western geographic practices that privilege seeing as knowing. Additionally, photographs of two Black women are included in the film, yet there are not any Black women characters. The film reminded me of the demonic, and I wondered what did it mean for these photographs to be included, and could they be read oppositionally? The final paper posits that the Humanities have an integral role in imagining being human anew. In particular, the novel is a medium of possibility. Its form can reach the conceptual crevices and excesses that lie beyond our epistemic boundaries. I read Rivers Solomon’s An Unkindness of Ghosts as an ushering in of Sylvia Wynter’s demonic.
Additional file 22 of Genome-wide identification, classification, and expression analysis of the JmjC domain-containing histone demethylase gene family in birch
Creators: name: Chen, Bowei
name: Ali, Shahid
name: Zhang, Xu
name: Zhang, Yonglan
name: Wang, Min
name: Zhang, Qingzhu
name: Xie, Linan
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 22: Figure S6. The expression of BpJMJ genes analyzed by transcriptome in response to salt treatment (200mM NaCl).
Finding the mechanism of wave energy flux damping in solar pores using numerical simulations
Creators: name: Riedl, Julia M.
name: Gilchrist-Millar, Caitlin A.
name: Van Doorsselaere, Tom
name: Jess, David B.
name: Grant, Samuel D. T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Context. Solar magnetic pores are, due to their concentrated magnetic fields, suitable guides for magnetoacoustic waves. Recent observations have shown that propagating energy flux in pores is subject to strong damping with height; however, the reason is still unclear. Aims. We investigate possible damping mechanisms numerically to explain the observations. Methods. We performed 2D numerical magnetohydrodynamic (MHD) simulations, starting from an equilibrium model of a single pore inspired by the observed properties. Energy was inserted into the bottom of the domain via different vertical drivers with a period of 30s. Simulations were performed with both ideal MHD and non-ideal effects. Results. While the analysis of the energy flux for ideal and non-ideal MHD simulations with a plane driver cannot reproduce the observed damping, the numerically predicted damping for a localized driver closely corresponds with the observations. The strong damping in simulations with localized driver was caused by two geometric effects, geometric spreading due to diverging field lines and lateral wave leakage.
description: 12 pages (including appendix), 13 figures, accepted for publication by A&A
Direct and Heterodyne Detection of Microwaves in a Metallic Single Wall Carbon Nanotube
Creators: name: Rodriguez-Morales, F.
name: Zannoni, R.
name: Nicholson, J.
name: Fischetti, M.
name: Yngvesson, K. S.
name: Appenzeller, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: This letter reports measurements of microwave (up to 4.5 GHz) detection in metallic single-walled carbon nanotubes. The measured voltage responsivity was found to be 114 V/W at 77K. We also demonstrated heterodyne detection at 1 GHz. The detection mechanism can be explained based on standard microwave detector theory and the nonlinearity of the DC IV-curve. We discuss the possible causes of this nonlinearity. While the frequency response is limited by circuit parasitics in this measurement, we discuss evidence that indicates that the effect is much faster and that applications of carbon nanotubes as terahertz detectors are feasible.
Type-II Weyl semimetal vs gravastar
Creators: name: Volovik, G. E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The boundary between the type I and type II Weyl semimetals serves as the event horizon for the "relativistic" fermions. The interior of the black hole is represented by the type II Weyl semimetal, where the Fermi surface is formed. The process of the filling of the Fermi surface by electrons results in the relaxation inside the horizon. This leads to the Hawking radiation and to the reconstruction of the interior vacuum state. After the Fermi surface is fully occupied, the interior region reaches the equilibrium state, for which the Hawking radiation is absent. If this scenario is applicable to the real black hole, then the final state of the black hole will be the dark energy star with the event horizon. Inside the event horizon one would have de Sitter space time, which is separated from the event horizon by the shell of the Planck length width. Both the de Sitter part and the shell are made of the vacuum fields without matter. This is distinct from the gravastar, in which the matter shell is outside the "horizon", and which we call the type I gravastar. But this is similar to the other type of the vacuum black hole, where the shell is inside the event horizon, and which we call the type II gravastar. We suggest to study the vacuum structure of the type II gravastar using the $q$-theory, where the vacuum variable is the 4-form field introduced for the phenomenological description of the quantum vacuum.
description: 7 pages, 3 figures, version accepted in JETP Letters
“Ideología de género” y activismo político del movimiento provida. El caso de Con Mis Hijos no te Metas en Argentina (2017-2020)
Creators: name: Santamarina, Sofia
Publisher: name: figshare
Year: 2021
Subjects: subject: 180114 Human Rights Law
subject: FOS: Law

description: Tesis para obtener el grado de Magister en Derechos Humanos y Democratización en América Latina y el Caribe -- Global Campus of Human Rights, Universidad Nacional de San Martín
Esta investigación se propone indagar las estrategias de incidencia política del movimiento conservador argentino a través de sus repertorio de acción y discursos en redes sociales, durante el periodo 2017-2020. Para ello se analiza el caso de Con Mis Hijos no te Metas, uno de los colectivos que organiza sus discursos y activismo entorno a la oposición de las políticas estatales inspiradas en la denominada "ideología de género". El estudio de este caso busca realizar un aporte a los estudios de los contramovimientos sociales en Argentina a partir del enfoque de la etnografía virtual.
Spectra of Sparse Random Matrices
Creators: name: Kuehn, Reimer
Publisher: name: arXiv
Year: 2008
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We compute the spectral density for ensembles of of sparse symmetric random matrices using replica, managing to circumvent difficulties that have been encountered in earlier approaches along the lines first suggested in a seminal paper by Rodgers and Bray. Due attention is payed to the issue of localization. Our approach is not restricted to matrices defined on graphs with Poissonian degree distribution. Matrices defined on regular random graphs or on scale-free graphs, are easily handled. We also look at matrices with row constraints such as discrete graph Laplacians. Our approach naturally allows to unfold the total density of states into contributions coming from vertices of different local coordination.
description: 22 papges, 8 figures (one on graph-Laplacians added), one reference added, some typos eliminated
A Statistical Study of Galactic SNRs using the PMN Survey
Creators: name: Stupar, M.
name: Filipovic, M. D.
name: Parker, Q. A.
name: White, G. L.
name: Pannuti, T. G.
name: Jones, P. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Parkes-MIT-NRAO (PMN) radio survey has been used to generate a quasi all-sky study of Galactic Supernova Remnants (SNRs) at a common frequency of 4.85 GHz. We present flux densities estimated for the sample of 110 Southern Galactic SNRs (up to Dec = - 65 deg.) observed with the Parkes 64-m radio telescope and an additional sample of 54 from the Northern PMN (up to Dec = +64 deg.) survey undertaken with the Green Bank 43-m (20 SNRs) and 91-m (34 SNRs) radio telescopes. Out of this total sample of 164 selected SNRs (representing 71% of the 231 known SNRs in the Green catalogue) we consider 138 to provide reliable estimates of flux density and surface brightness distribution. This sub-sample represents those SNRs which fall within carefully chosen selection criteria which minimises the effects of the known problems in establishing reliable fluxes from the PMN survey data. Our selection criteria are based on a judicious restriction of source angular size and telescope beam together with careful evaluation of fluxes on a case by case basis. This gives confidence in the newly derived PMN fluxes when the selection criteria are respected. We find a sharp drop off in the flux densities for Galactic SNRs beyond 4 Jy and then a fairly flat distribution from 5-9 Jy, a slight decline and a further flat distribution from 9-20 Jy though the numbers of SNR in each Jy bin are low. We also re-visit the contentious Sigma-D relation to determine a new power law index for a sub-sample of shell type SNRs which yields beta= -2.2 +/- 0.6. This new evaluation of the Sigma-D relation, applied to the restricted sample, provides new distance estimates and their Galactic scale height distribution. We find a peak in the SNR distribution between 7-11 kpc with most restricted to +/- 100 pc Galactic scale height.
description: 14 pages, 7 figures. Accepted for publishing in Astrophysics and Space Science
How singers adapt to room acoustical conditions
Creators: name: Luizard, Paul
name: Brauer, Erik
name: Weinzierl, Stefan
name: Henrich Bernardoni, Nathalie
Publisher: name: Technische Universität Berlin
Year: 2018
Subjects: subject: 600 Technik, Technologie
subject: 534 Schall und verwandte Schwingungen
subject: room acoustics
subject: singing voice
subject: adaptation

description: Previous studies on adaptation of performers to room acoustic conditions mostly focused on musicians. The present study deals with the strategies used by singers, whose musical instrument is inherently part of themselves, inducing a specific perception of the sound they produce. To overcome the variations of the acoustical characteristics of the rooms where they perform, singers tend to vary their sound production (e.g. sound intensity, spectral balance, tempo, articulation). To which extend do singers change their sound production when singing in different rooms? The methodology involves 7 rooms with different acoustical characteristics in which 4 singers performed 3 excerpts a capella of musical pieces. In each place, they were recorded by means of nearfield microphone capturing only the singing voice, i.e. without reverberation from the room. Omnidirectional and binaural room acoustic measurements were also performed on stage. Room acoustical parameters are derived from the measured impulse responses and musical descriptors are extracted from each note of the singing recordings, allowing to quantify the musical performances. The degree of correlation between singing and room acoustics is further considered, revealing both common and specific strategies used by the singers.
A radiation driven implosion model for the enhanced luminosity of protostars near HII regions
Creators: name: Motoyama, K.
name: Umemoto, T.
name: Shang, H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Context. Molecular clouds near the H II regions tend to harbor more luminous protostars. Aims. Our aim in this paper is to investigate whether or not radiation-driven implosion mechanism enhances luminosity of protostars near regions of high-ionizing fluxes. Methods. We performed numerical simulations to model collapse of cores exposed to UV radiation from O stars. We investigated dependence of mass loss rates on the initial density profiles of cores and variation of UV fluxes. We derived simple analytic estimates of accretion rates and final masses of protostars. Results. Radiation-driven implosion mechanism can increase accretion rates of protostars by 1-2 orders of magnitude. On the other hand, mass loss due to photo-evaporation is not large enough to have a significant impact on the luminosity. The increase of accretion rate makes luminosity 1-2 orders higher than those of protostars that form without external triggering. Conclusions. Radiation-driven implosion can help explain the observed higher luminosity of protostars in molecular clouds near H II regions.
description: 9 pages, 6 figures, accepted for publication in Astronomy and Astrophysics
A survey for non-transiting planets with Kepler
Creators: name: Καρπούζας, Κωνσταντίνος Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Εξω-πλανήτες
Ανάλυση δεδομένων
Πλανητικό σύστημα
exoplanets
Kepler mission
planet formation

description: In addition to a potential transit event, the existence of an exoplanet around a star introduces also out-of-transit signatures in the photometric light-curves. These signatures are present even if the inclination of the planetary orbit is below the critical value for a transit. In this work we search for non-transiting exoplanets in the Κepler data and, in particular, for planetary reflected/emitted light, ellipsoidal variations and Doppler beaming effects. Based on statistics, we estimated that there are approximately 50 detectable non-transiting hot Jupiters in the total kepler sample, although the total number of non-transiting planets should be around 958. We analysed 196,468 light-curves from all the 17 quarters and found 64 candidates with minimum masses between 3 and 145 Jupiter masses. We report the detection of 14 candidates in the hot Jupiter regime and 11 brown dwarf candidates with masses between 35-55 Jupiter masses, in the so called brown dwarf desert regime of the Mass-Period diagram. Because of the lack of transits, radial velocity measurements are necessary in order to confirm the existence of these candidate
description: Εκτός από το σύνηθες φαινόμενο της διάβασης, η ύπαρξη ενος εξω-ηλιακού πλανήτη γύρω από ενα αστέρι είναι συνδεδεμένη με περιοδικές μεταβολές που αποτυπώνονται στην καμπύλη φωτός του αστέρα. Αυτές οι μεταβολές, ειναι εμφανείς ακόμα και αν η κλίση της τροχιάς του πλανήτη είναι μικρότερη της κρίσιμης τιμής για να πραγματοποιηθεί μια διάβαση. Σε αυτή την εργασία αναζητούμε εξω-ηλιακούς πλανήτες στα δεδομένα του δορυφόρου Kepler, μέσω της ανιχνευσης περιοδικών μεταβολών που αυτοι προκαλούν στο παρατηρούμενο συνεχές αστρικό σήμα, λόγω μετατόπισης Doppler, ελλειψοειδούς παραμόρφωσης και ανακλώμενου φωτός. Με βάση στατιστικών υπολογισμών, προβλέψαμε οτι περίπου 50 από τους συνολικά 958 εξω-πλανήτες τύπου '' hot Jupiter'' είναι δυνατόν να ανιχνευθούν με τη μέθοδο που ακολουθήσαμε. Αναλύσαμε 196,468 καμπύλες φωτός από το διαθέσιμο αρχείο και καταφέραμε να κατασκευάσουμε εναν κατάλογο από 64 υποψήφια αντικείμενα με μάζες μεταξύ 3 και 145 μάζες Δία. Από τα 64 αυτά αντικείμενα, 14 είχαν μάζες μικρότερες από 13 μαζες Δία και συνεπώς θεωρήθηκαν υποψήφιοι εξω-πλανήτες. Επιπροσθέτως, 11 υποψήφιοι με μάζες μεταξύ 35 και 55 μάζες Δία εντοπίστηκαν σε μια περιοχή του διαγράμματος μάζας-περιόδου η οποία, σύμφωνα με επικρατούσες θεωρίες, θα έπρεπε να είναι κενή από τέτοια αντικείμενα. Εξαιτίας της απουσίας διαβάσεων στα συστήματα αυτά, για να επιβεβαιώσουμε εαν πρόκειται για πλανήτες χρειαζονται επιπλέον ακριβείς μετρήσεις μάζας με την μέθοδο των ακτινικών ταχυτήτων
Gravitomagnetic Fields in Rotating Superconductors to Solve Tate's Cooper Pair Mass Anomaly
Creators: name: Tajmar, M.
name: de Matos, C. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Superconductors have often been used to claim gravitational anomalies in the context of breakthrough propulsion. The experiments could not be reproduced by others up to now, and the theories were either shown to be wrong or are often based on difficult to prove assumptions. We will show that superconductors indeed could be used to produce non-classical gravitational fields, based on the established disagreement between theoretical prediction and measured Cooper-pair mass in Niobium. Tate et al failed to measure the Cooper-pair mass in Niobium as predicted by quantum theory. This has been discussed in the literature without any apparent solution. Based on the work from DeWitt to include gravitomagnetism in the canonical momentum of Cooper-pairs, the authors published a number of papers discussing a possibly involved gravitomagnetic field in rotating superconductors to solve Tate's measured anomaly. Although one possibility to match Tate's measurement, a number of reasons were developed by the authors over the last years to show that the gravitomagnetic field in a rotating quantum material must be different from its classical value and that Tate's result is actually the first experimental sign for it. This paper reviews the latest theoretical approaches to solve the Tate Cooper-pair anomaly based on gravitomagnetic fields in rotating superconductors.
The Hyperfine Einstein-Infeld-Hoffmann Potential
Creators: name: Porto, Rafael A.
name: Rothstein, Ira Z.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We use recently developed effective field theory techniques to calculate the third order post-Newtonian correction to the spin-spin potential between two spinning objects. This correction represents the first contribution to the spin-spin interaction due to the non-linear nature of general relativity and will play an important role in forthcoming gravity wave experiments.
description: 4 pages, 2 figures, RevTex
Πειραματική υλοποίηση εργαστηριακών ασκήσεων σε οπτικά συστήματα επικοινωνιών
Creators: name: Γεωργιάδου, Ελενα Ηλία
name: Στεργίου, Αθανάσιος Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Οπτικά συστήματα επικοινωνιών
Παθητικά οπτικά δίκτυα
Οπτική διαμόρφωση σήματος
Optical communication systems
Passive optical networks
Optical signal modulation

description: Αντικείμενο της παρούσας διπλωματικής εργασίας είναι η πειραματική μελέτη και υλοποίηση εργαστηριακών ασκήσεων σε οπτικά συστήματα επικοινωνιών. Η μελέτη αφορά στην πειραματική εργαστηριακή υλοποίηση, χαρακτηρισμό και αξιολόγηση της απόδοσης οπτικών δομικών στοιχείων ενός δικτύου PON, συγκεκριμένα ενός οπτικού διαμορφωτή νιοβικού λιθίου, οπτικού ενισχυτή ίνας ερβίου, οπτικού διαχωριστή PON, φωτοδιόδου και οπτικών ινών. Για τη μετάδοση του οπτικού σήματος χρησιμοποιήθηκε ένα DFB laser, καθώς και δύο LDTC drivers, τόσο για το laser όσο και για το laser άντλησης του ενισχυτή ίνας ερβίου. Περιγράφεται το θεωρητικό υπόβαθρο των αρχών λειτουργίας των οπτικών αυτών στοιχείων, καθώς επίσης και τα πειραματικά αποτελέσματα, τα οποία αναλύονται και σχολιάζονται
description: The present thesis regards the experimental study and implementation of optical communication systems. The main points of interest are the performance and characterization of certain optical elements to be used in a PON network, such as a lithium niobate optical modulator, an erbium-doped fiber amplifier, a PON splitter, a photodiode and optical fibers. A DFB laser is used for transmitting the optical signals, as well as two LDTC drivers, one for the laser and one for the EDFA’s laser pump. The theoretical background and the principles of operation of the aforementioned optical elements are described, as well as the experimental results, which are analyzed and commented upon
FC-families, and improved bounds for Frankl's Conjecture
Creators: name: Morris, Robert
Publisher: name: arXiv
Year: 2007
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: A family of sets F is said to be union-closed if A \cup B is in F for every A and B in F. Frankl's conjecture states that given any finite union-closed family of sets, not all empty, there exists an element contained in at least half of the sets. Here we prove that the conjecture holds for families containing three 3-subsets of a 5-set, four 3-subsets of a 6-set, or eight 4-subsets of a 6-set, extending work of Poonen and Vaughan. As an application we prove the conjecture in the case that the largest set has at most nine elements, extending a result of Gao and Yu. We also pose several open questions.
description: 19 pgs, no figures
Hybrid star properties from an extended linear sigma model
Creators: name: Takátsy, János
name: Kovács, Péter
name: Wolf, György
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The equation of state provided by effective models of strongly interacting matter should comply with the restrictions imposed by current astrophysical observations on compact stars. Using the equation of state given by the (axial-)vector meson extended linear sigma model, we determine the mass-radius relation and study whether these restrictions are satisfied under the assumption that most of the star is filled with quark matter. We study the dependence of the mass-radius relation on the parameters of the model.
description: 6 pages, 4 figures. arXiv admin note: substantial text overlap with arXiv:1907.05841
Moderate Asphericity of the SN 2002ic Circumstellar Envelope
Creators: name: Chugai, Nikolai N.
name: Chevalier, Roger A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The polarization of SN 2002ic interacting with a dense circumstellar envelope is calculated in the context of the asymmetric version of a previously proposed spherical interaction model. The circumstellar envelope is taken to be oblate. The observed polarization (Wang et al. 2004) can be reproduced for an aspect ratio of 0.65-0.7 assuming inclination angles >60 degrees. This model predicts a weak sensitivity of the line profiles to the orientation, in agreement with the absence of significant variations of the line profiles among SN 2002ic-like supernovae. We propose a test for distinguishing between the binary and single star progenitor scenarios based upon the polarization distribution function for the growing sample of these events.
description: 13 pages, 4 figs., ApJ, accepted