cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The plasma spectrum effect on acoustic wave amplification by carrier drift in semiconductors
Creators: name: Kornyushin, Yuri
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The effect of plasma oscillations on acoustic wave amplification by carrier drift in semiconductors is discussed. A continuum theory is developed on the basis of hydrodynamical equations for the conduction electrons, the equations for the elastic vibrations of the crystal, and the Poisson equation. It is shown that if the plasma frequency is much lower than the reciprocal value of the electron relaxation time for the scattering on phonons and impurities, the results are in agreement with available calculations based on the electrical conductivity - diffusion equation. However, in the opposite case the amplification factor is orders of magnitude larger compared to the value predicted by those calculations, while the optimum drift velocity is much smaller.
description: Subj-class: Materials Science
Deconvolution of confocal microscopy images using proximal iteration and sparse representations
Creators: name: Dupé, François-Xavier
name: Fadili, Jalal
name: Starck, Jean Luc
Publisher: name: arXiv
Year: 2008
Subjects: subject: Applications (stat.AP)
subject: Optimization and Control (math.OC)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We propose a deconvolution algorithm for images blurred and degraded by a Poisson noise. The algorithm uses a fast proximal backward-forward splitting iteration. This iteration minimizes an energy which combines a \textit{non-linear} data fidelity term, adapted to Poisson noise, and a non-smooth sparsity-promoting regularization (e.g $\ell_1$-norm) over the image representation coefficients in some dictionary of transforms (e.g. wavelets, curvelets). Our results on simulated microscopy images of neurons and cells are confronted to some state-of-the-art algorithms. They show that our approach is very competitive, and as expected, the importance of the non-linearity due to Poisson noise is more salient at low and medium intensities. Finally an experiment on real fluorescent confocal microscopy data is reported.
Exact steady state of the open XX-spin chain: entanglement and transport properties
Creators: name: Benatti, Fabio
name: Floreanini, Roberto
name: Memarzadeh, Laleh
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the reduced dynamics of open quantum spin chains of arbitrary length $N$ with nearest neighbour $XX$ interactions, immersed within an external constant magnetic field along the $z$ direction, whose end spins are weakly coupled to heat baths at different temperatures, via energy preserving couplings. We find the analytic expression of the unique stationary state of the master equation obtained in the so-called global approach based on the spectralization of the full chain Hamiltonian. Hinging upon the explicit stationary state, we reveal the presence of sink and source terms in the spin-flow continuity equation and compare their behaviour with that of the stationary heat flow. Moreover, we also obtain analytic expressions for the steady state two-spin reduced density matrices and for their concurrence. We then set up an algorithm suited to compute the stationary bipartite entanglement along the chain and to study its dependence on the Hamiltonian parameters and on the bath temperatures.
On the Physical Meaning of the Robinson-Trautman-Maxwell Fields
Creators: name: Kozameh, Carlos
name: Newman, E. T.
name: Silva-Ortigoza, Gilberto
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the Robinson-Trautman-Maxwell Fields in two closely related coordinate systems, the original Robinson-Trautman (RT) coordinates (in a more general context, often referred to as NU coordinates) and Bondi coordinates. In particular, we identify one of the RT variables as a velocity and then from the Bondi energy-momentum 4-vector, we find kinematic expressions for the mass and momentum in terms of this velocity. From these kinematic expressions and the energy-momentum loss equation we obtain surprising equations of motion for `the center of mass' of the source where the motion takes place in the four-dimensional Poincare translation sub-group of the BMS group.
description: 29 pages
Additional file 11 of Claudin-2 inhibits renal clear cell carcinoma progression by inhibiting YAP-activation
Creators: name: Balawant Kumar
name: Ahmad, Rizwan
name: Giannico, Giovanna A.
name: Zent, Roy
name: Talmon, Geoffrey A.
name: Harris, Raymond C.
name: Clark, Peter E.
name: Vinata Lokeshwar
name: Punita Dhawan
name: Singh, Amar B.
Publisher: name: figshare
Year: 2021
Subjects: Biophysics
Biochemistry
Medicine
Cell Biology
Molecular Biology
Developmental Biology
Marine Biology
Cancer
Hematology

description: Additional file 11: Supplementary Table S2. Primers sequence.
New excitations in bcc $^{4}$He - an inelastic neutron scattering study
Creators: name: Pelleg, O.
name: Bossy, J.
name: Farhi, E.
name: Shay, M.
name: Sorkin, V.
name: Polturak, E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We report neutron scattering measurements on bcc solid $^{4}$% He. We studied the phonon branches and the recently discovered ''optic-like'' branch along the main crystalline directions. In addition, we discovered another, dispersionless "optic-like'' branch at an energy around 1 meV ($\sim$~11K). The properties of the two "optic-like" branches seem different. Since one expects only 3 acoustic phonon branches in a monoatomic cubic crystal, these new branches must represent different type of excitations. One possible interpretation involves localized excitations unique to a quantum solid.
description: 4 pages, 3 figures, accepted by PRB, Rapid Communications
Additional file 10 of Claudin-2 inhibits renal clear cell carcinoma progression by inhibiting YAP-activation
Creators: name: Balawant Kumar
name: Ahmad, Rizwan
name: Giannico, Giovanna A.
name: Zent, Roy
name: Talmon, Geoffrey A.
name: Harris, Raymond C.
name: Clark, Peter E.
name: Vinata Lokeshwar
name: Punita Dhawan
name: Singh, Amar B.
Publisher: name: figshare
Year: 2021
Subjects: Biophysics
Biochemistry
Medicine
Cell Biology
Molecular Biology
Developmental Biology
Marine Biology
Cancer
Hematology

description: Additional file 10: Supplementary Table S1. List of reagents, antibodies and kits.
Additional file 12 of Claudin-2 inhibits renal clear cell carcinoma progression by inhibiting YAP-activation
Creators: name: Balawant Kumar
name: Ahmad, Rizwan
name: Giannico, Giovanna A.
name: Zent, Roy
name: Talmon, Geoffrey A.
name: Harris, Raymond C.
name: Clark, Peter E.
name: Vinata Lokeshwar
name: Punita Dhawan
name: Singh, Amar B.
Publisher: name: figshare
Year: 2021
Subjects: Biophysics
Biochemistry
Medicine
Cell Biology
Molecular Biology
Developmental Biology
Marine Biology
Cancer
Hematology

description: Additional file 12: Supplementary Table S3. Selected Potential protein Interacting with Claudin-2.
Additional file 1 of Claudin-2 inhibits renal clear cell carcinoma progression by inhibiting YAP-activation
Creators: name: Balawant Kumar
name: Ahmad, Rizwan
name: Giannico, Giovanna A.
name: Zent, Roy
name: Talmon, Geoffrey A.
name: Harris, Raymond C.
name: Clark, Peter E.
name: Vinata Lokeshwar
name: Punita Dhawan
name: Singh, Amar B.
Publisher: name: figshare
Year: 2021
Subjects: Biophysics
Biochemistry
Medicine
Cell Biology
Molecular Biology
Developmental Biology
Marine Biology
Cancer
Hematology

description: Additional file 1. Supplementary Methods and Material.
Flavor effects in thermal leptogenesis
Creators: name: Blanchet, Steve
name: Di Bari, Pasquale
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We review recent developments in leptogenesis on flavor effects. Their account discloses an important connection between the matter-antimatter asymmetry of the Universe and CP violation at low energies. Besides, they modify the upper bound on the neutrino masses holding in the unflavored case. In this respect, it is important to identify the exact condition for flavor effects to be relevant and for the `fully flavored' Boltzmann equations to be valid.
description: 3 pages, no figure ; contribution to the proceedings of NOW 2006, Conca Specchiulla, Sep. 9-16, 2006
The priest in The Temple: the relationship between George Herbert’s English poetry and The Country parson
Creators: name: Allen, Matthew
Publisher: name: University of British Columbia
Year: 2008

description: This dissertation describes the relationship between George Herbert's two principal works, The Temple (1633) and The Country Parson (1651). The introduction discusses the main problems faced by readers of The Temple: its paradoxical religious statements, its apparent lack of unity, its variable poetic voice, and its place in literary history. Chapter 1 argues that The Temple and The Country Parson are complementary: that they may have been written together and considered companionpieces, that they are similar in form and content, and that they should be read together. Chapter 2 places The Country Parson in the genre of the clerical manual, and explains its distinctive form as the influence of various kinds of renaissance prose, including the essay, the professional handbook, the courtesy book, the prose character, and the moral resolve. Chapter 3 provides the first thorough analysis of the prose style of The Country Parson, a style which may be loosely characterized as a combination of Ciceronian and Senecan attributes, but is better thought of as "Anglican" or "poetic." Chapters 4 and 5 apply The Country Parson to the problems faced by readers of The Temple, and describe the Anglican spirituality, pastoral voice, and coherence of The Temple, along with its proper place in literary history.
Extreme times for volatility processes
Creators: name: Masoliver, Jaume
name: Perello, Josep
Publisher: name: arXiv
Year: 2006
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Computational Physics (physics.comp-ph)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: We present a detailed study on the mean first-passage time of volatility processes. We analyze the theoretical expressions based on the most common stochastic volatility models along with empirical results extracted from daily data of major financial indices. We find in all these data sets a very similar behavior that is far from being that of a simple Wiener process. It seems necessary to include a framework like the one provided by stochastic volatility models with a reverting force driving volatility toward its normal level to take into account memory and clustering effects in volatility dynamics. We also detect in data a very different behavior in the mean first-passage time depending whether the level is higher or lower than the normal level of volatility. For this reason, we discuss asymptotic approximations and confront them to empirical results with a good agreement, specially with the ExpOU model.
description: 10, 6 colored figures
Inheritances, social classes, and wealth distribution
Creators: name: Patrício, Pedro
name: Araújo, Nuno A. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics and Society (physics.soc-ph)
subject: General Economics (econ.GN)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: We consider a simple theoretical model to investigate the impact of inheritances on the wealth distribution. Wealth is described as a finite resource, which remains constant over different generations and is divided equally among offspring. All other sources of wealth are neglected. We consider different societies characterized by a different offspring probability distribution. We find that, if the population remains constant, the society reaches a stationary wealth distribution. We show that inequality emerges every time the number of children per family is not always the same. For realistic offspring distributions from developed countries, the model predicts a Gini coefficient of $G\approx 0.3$. If we divide the society into wealth classes and set the probability of getting married to depend on the distance between classes, the stationary wealth distribution crosses over from an exponential to a power-law regime as the number of wealth classes and the level of class distinction increase.
description: 7 pages, 7 figures
Obstruction classes of crossed modules of Lie algebroids and Lie groupoids linked to existence of principal bundles
Creators: name: Laurent-Gengoux, Camille
name: Wagemann, Friedrich
Publisher: name: arXiv
Year: 2006
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 22A22, 17B56, 18F20, 18G40

description: Let K be a Lie group and P be a K-principal bundle on a manifold M. Suppose given furthermore a central extension 1\to Z\to \hat{K}\to K\to 1 of K. It is a classical question whether there exists a \hat{K}-principal bundle \hat{P} on M such that \hat{P}/Z is isomorphic to P. Neeb defines in this context a crossed module of topological Lie algebras whose cohomology class [ω_{\rm top alg}] is an obstruction to the existence of \hat{P}. In the present paper, we show that [ω_{\rm top alg}] is up to torsion a full obstruction for this problem, and we clarify its relation to crossed modules of Lie algebroids and Lie groupoids, and finally to gerbes.
description: 19 pages
Additional file 2 of Claudin-2 inhibits renal clear cell carcinoma progression by inhibiting YAP-activation
Creators: name: Balawant Kumar
name: Ahmad, Rizwan
name: Giannico, Giovanna A.
name: Zent, Roy
name: Talmon, Geoffrey A.
name: Harris, Raymond C.
name: Clark, Peter E.
name: Vinata Lokeshwar
name: Punita Dhawan
name: Singh, Amar B.
Publisher: name: figshare
Year: 2021
Subjects: Biophysics
Biochemistry
Medicine
Cell Biology
Molecular Biology
Developmental Biology
Marine Biology
Cancer
Hematology

description: Additional file 2: Fig. S1. Effects of claudin-2 expression on tumor grade and gender in patients with RCC: (a) Kaplan-Meir analysis to determine patient survival in relation to claudin-2 expression with tumor grade; (b) Kaplan-Meir analysis to determine patient survival in relation to claudin-2 expression with gender. High vs low expression of claudin-2 in tumor grade (P
Deciphering chaos in evolutionary games
Creators: name: Mukhopadhyay, Archan
name: Chakraborty, Sagar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Discrete-time replicator map is a prototype of evolutionary selection game dynamical models that have been very successful across disciplines in rendering insights into the attainment of the equilibrium outcomes, like the Nash equilibrium and the evolutionarily stable strategy. By construction, only the fixed point solutions of the dynamics can possibly be interpreted as the aforementioned game-theoretic solution concepts. Although more complex outcomes like chaos are omnipresent in the nature, it is not known to which game-theoretic solutions they correspond. Here we construct a game-theoretic solution that is realized as the chaotic outcomes in the selection monotone game dynamic. To this end, we invoke the idea that in a population game having two-player--two-strategy one-shot interactions, it is the product of the fitness and the heterogeneity (the probability of finding two individuals playing different strategies in the infinitely large population) that is optimized over the generations of the evolutionary process.
Cooperators overcome migration dilemma through synchronization
Creators: name: Sadhukhan, Shubhadeep
name: Chattopadhyay, Rohitashwa
name: Chakraborty, Sagar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Synchronization, cooperation, and chaos are ubiquitous phenomena in nature. In a population composed of many distinct groups of individuals playing the prisoner's dilemma game, there exists a migration dilemma: No cooperator would migrate to a group playing the prisoner's dilemma game lest it should be exploited by a defector; but unless the migration takes place, there is no chance of the entire population's cooperator-fraction to increase. Employing a randomly rewired coupled map lattice of chaotic replicator maps, modelling replication-selection evolutionary game dynamics, we demonstrate that the cooperators -- evolving in synchrony -- overcome the migration dilemma to proliferate across the population when altruism is mildly incentivized making few of the demes play the leader game.
description: 12 pages, 8 figures
A wormhole geometry from gravitational collapse
Creators: name: Chakrabarti, Soumya
name: Kar, Sayan
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss a proposal on how gravitational collapse of a NEC (Null Energy Condition) violating spherically symmetric fluid distribution can avoid the formation of a zero proper volume singularity and eventually lead to a Lorentzian wormhole geometry. Our idea is illustrated using a time-evolving wormhole spacetime in which, we show how a collapsing sphere may never reach a zero proper volume end-state. The nature of geodesic congruences in such spacetimes is considered and analyzed. Our construction is inspired from a recently proposed static wormhole geometry, the multi-parameter Simpson-Visser line element, which is known to unite wormholes and black holes (regular and singular) in a single framework.
description: 14 Pages, 8 Figures, Accepted for publication in Physical Review D
Προσδιορισμός Θέσης Κινητής Μονάδας σε Ασύρματο δίκτυο επικοινωνιών με χρήση Νευρωνικών Δικτύων
Creators: name: Λέρα, Μαρία Ευάγγελου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Ευφυείς κεραίες, νευρωνικά δίκτυα
Εύρεση διεύθυνση σήματος και απόσταση μονάδας,
Back Propagation αλγόριθμος, αποτελέσματα προσομοίωσης.
Intelligent antennas
Neural networks, signal direction, distance unit
Back Propagation, simulation results.

description: Στην εργασία προτείνεται μεθοδολογία με εφαρμογή Τεχνητών Νευρωνικών Δικτύων(ArtificialNeuralNetworks, ANN) για τον προσδιορισμό της θέσης κινητής μονάδας σε ασύρματο δίκτυο επικοινωνιών.Η μεθοδολογία περιλαμβάνεισαν πρώτο βήμα ειδική επεξεργασία των σημάτων που λαμβάνονται από την κεραία ανίχνευσης.Στη συνέχεια τα επεξεργασμένα σήματα χρησιμοποιούνται παράλληλα σε δύο ANN, ένα για την ανίχνευση της διεύθυνσης άφιξης του σήματος (DirectionofArrival, DoA)και ένα για την ανίχνευση της απόστασης, με παράλληλη επίσης ροή πληροφορίας από το πρώτο δίκτυο στο δεύτερο. Κλειδί για την ακριβή πρόβλεψη της θέσης αποτελεί η προτεινόμενη μέθοδος επεξεργασίας των αρχικών σημάτων. Στην εργασία περιγράφονται αναλυτικά η δομή των Νευρωνικών δικτύων που σχεδιάστηκαν, ο τρόπος λειτουργίας τους και οι αλγόριθμοι εκπαίδευσης που χρησιμοποιούν, όπως ο Κανόνας Δέλτα και ο BackPropagationΑλγόριθμος. Πραγματοποιείται αναλυτική περιγραφή του κεραιοσυστήματος και της μεθοδολογίας που προτείνεται. Ακολουθούν τα αποτελέσματα προσομοίωσης για στοιχειοκεραίες τριών, πέντε και επτά στοιχείων, με αποστάσεις στοιχείων d=0.25λ, d=0.5λ, d=0.75λ και d=1λ. Τέλος, παρουσιάζονται τα συμπεράσματα που προέκυψαν όσον αφορά την καταλληλότητα της διάταξης της στοιχειοκεραίας καθώς και την αποδοτικότητα και την αξιοπιστία της προτεινόμενης μεθόδου.
description: In this thesis a technique based on the application of Artificial Neural Network (ANN)algorithm is proposed for the localization of a mobile unit inside a wireless telecommunications network. The first step of the method is the suitable signal procession of the signals received from the elements of the tracking antenna array. The processed signals are used in parallel as inputs to two ANNs. The one of them provides the Direction of Arrival (DoA) of the incoming signal while the other one is used for the prediction of the source distance. Besides the parallel feeding of the ANNs information of the first ANN is transferred to the second one. The key for the accurate prediction of the source position is the proposed method of processing the initial signals. A detailed description is presented regarding the Neural Networks used, the mode of operation and the algorithm applied for their training as the Delta rule and the Back Propagation Algorithm. Next a detailed description of the antenna system and the proposed methodology follows and the simulated results for linear antenna array consisted of three, five and seven elements, with elements' inter-distance d=0.25λ, d=0.5λ, d=0.75λ and d=1λ are presented. Finally, the conclusions about the reliability and the effectiveness of the proposed method are commented.
A proximal iteration for deconvolving Poisson noisy images using sparse representations
Creators: name: Dupé, François-Xavier
name: Fadili, Jalal
name: Starck, Jean Luc
Publisher: name: arXiv
Year: 2008
Subjects: subject: Applications (stat.AP)
subject: Optimization and Control (math.OC)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We propose an image deconvolution algorithm when the data is contaminated by Poisson noise. The image to restore is assumed to be sparsely represented in a dictionary of waveforms such as the wavelet or curvelet transforms. Our key contributions are: First, we handle the Poisson noise properly by using the Anscombe variance stabilizing transform leading to a {\it non-linear} degradation equation with additive Gaussian noise. Second, the deconvolution problem is formulated as the minimization of a convex functional with a data-fidelity term reflecting the noise properties, and a non-smooth sparsity-promoting penalties over the image representation coefficients (e.g. $\ell_1$-norm). Third, a fast iterative backward-forward splitting algorithm is proposed to solve the minimization problem. We derive existence and uniqueness conditions of the solution, and establish convergence of the iterative algorithm. Finally, a GCV-based model selection procedure is proposed to objectively select the regularization parameter. Experimental results are carried out to show the striking benefits gained from taking into account the Poisson statistics of the noise. These results also suggest that using sparse-domain regularization may be tractable in many deconvolution applications with Poisson noise such as astronomy and microscopy.
Temporal variations of the outer atmosphere and the dust shell of the carbon-rich Mira variable V Oph probed with VLTI/MIDI
Creators: name: Ohnaka, Keiichi
name: Driebe, T.
name: Weigelt, G.
name: Wittkowski, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the first multi-epoch N-band spectro-interferometric observations of the carbon-rich Mira variable V Oph using MIDI at the ESO's Very Large Telescope Interferometer. Our MIDI observations were carried out at three different phases 0.18, 0.49, and 0.65, using three different baselines configurations (UT2-UT4, UT1-UT4, and UT2-UT3) with projected baseline lengths of 42-124 m. The wavelength dependence of the uniform-disk diameters obtained at all epochs is characterized by a roughly constant region between 8 and 10 micron with a slight dip centered at ~9.5 micron and a gradual increase longward of 10 micron. These N-band angular sizes are significantly larger than the estimated photospheric size of V Oph. The angular sizes observed at different epochs reveal that the object appears smaller at phase 0.49 (minimum light) with uniform-disk diameters of ~5-12 mas than at phases 0.18 (~12-20 mas) and 0.65 (~9-15 mas). We interpret these results with a model consisting of optically thick C2H2 layers and an optically thin dust shell. Our modeling suggests that the C2H2 layers around V Oph are more extended (~1.7-1.8 Rstar) at phases 0.18 and 0.65 than at phase 0.49 (~1.4 Rstar) and that the C2H2 column densities appear to be the smallest at phase 0.49. We also find that the dust shell consists of amorphous carbon and SiC with an inner radius of ~2.5 Rstar, and the total optical depths at phases 0.18 and 0.65 are higher than that at phase 0.49. Our MIDI observations and modeling indicate that carbon-rich Miras also have extended layers of polyatomic molecules as previously confirmed in oxygen-rich Miras.
description: 14 pages, 10 figures, accepted for publication in A&A
Additional file 3 of Claudin-2 inhibits renal clear cell carcinoma progression by inhibiting YAP-activation
Creators: name: Balawant Kumar
name: Ahmad, Rizwan
name: Giannico, Giovanna A.
name: Zent, Roy
name: Talmon, Geoffrey A.
name: Harris, Raymond C.
name: Clark, Peter E.
name: Vinata Lokeshwar
name: Punita Dhawan
name: Singh, Amar B.
Publisher: name: figshare
Year: 2021
Subjects: Biophysics
Biochemistry
Medicine
Cell Biology
Molecular Biology
Developmental Biology
Marine Biology
Cancer
Hematology

description: Additional file 3: Fig. S2. Constitutive EGFR activation induces EMT in MDCK-II cells and specific loss of claudin-2 expression: Cells stably overexpressing the empty cloning vector (MDCKIICON) or a mutant HB-EGF construct that is constitutively secreted into the medium (MDCKIISHB) were used. Immunofluorescent analysis of the cellular expression and localization of claudin proteins and ZO-1. Arrows represent membrane tethered and disrupted expression of respective proteins.
New southern blue compact dwarf galaxies in the 2dF Galaxy Redshift Survey
Creators: name: Papaderos, P.
name: Guseva, N. G.
name: Izotov, Y. I.
name: Noeske, K. G.
name: Thuan, T. X.
name: Fricke, K. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Aiming to find new extremely metal-deficient star-forming galaxies we extracted from the Two-Degree Field Galaxy Redshift Survey (2dFGRS) 100K Data Release 14 emission-line galaxies with relatively strong [OIII] 4363 emission. Spectroscopic and photometric studies of this sample and, in addition, of 7 Tololo and 2 UM galaxies were performed on the basis of observations with the ESO 3.6m telescope. All sample galaxies qualify with respect to their photometric and spectroscopic properties as blue compact dwarf (BCD) galaxies. Additionally, they show a good overlap with a comparison sample of 100 well-studied emission-line galaxies on the 12+log(O/H) vs. log(Ne/O), log(Ar/O) and log(Fe/O) planes. From the analysis of the 2dFGRS subsample we report the discovery of two new extremely metal-deficient BCDs with an oxygen abundance 12+log(O/H) < 7.6 and of another seven galaxies with 12+log(O/H) < 7.8. Furthermore, we confirm previous oxygen abundance determinations for the BCDs Tol 1304-353, Tol 2146-391, UM 559 and UM 570 to be 12+log(O/H) < 7.8.
description: 26 pages, 65 figures, 5 tables, uses psfig.sty, Accepted for publication in Astronomy and Astrophysics. The paper with high-resolution figures can be downloaded at http://www.uni-sw.gwdg.de/~papade/Publications/Papaderos2006_2dF.pdf
SOX9 triggers different epithelial to mesenchymal transition states to promote pancreatic cancer progression
Creators: name: Carrasco-Garcia, Estefania
name: Lopez, Lidia
name: Moncho-Amor, Veronica
name: Carazo, Fernando
name: Aldaz, Paula
name: Collado, Manuel
name: Bell, Donald
name: Gaafar, Ayman
name: Karamitopoulou, Eva
name: Tzankov, Alexandar
name: Hidalgo, Manuel
name: Rubio, Ángel
name: Serrano, Manuel
name: Lawrie, Charles H
name: Lovell-Badge, Robin
name: Matheu, Ander
Publisher: name: The Francis Crick Institute
Year: 2022
Subjects: subject: Neurosciences
subject: FOS: Clinical medicine
subject: Model organisms
subject: Imaging
subject: Tumour Biology
subject: Genetics & Genomics
subject: Developmental Biology
subject: Stem Cells

description: Background: Pancreatic ductal adenocarcinoma (PDAC) is one of the most lethal cancers mainly due to spatial obstacles to complete resection, early metastasis and therapy resistance. The molecular events accompanying PDAC progression remain poorly understood. SOX9 is required for maintaining the pancreatic ductal identity and it is involved in the initiation of pancreatic cancer. In addition, SOX9 is a transcription factor linked to stem cell activity and is commonly overexpressed in solid cancers. It cooperates with Snail/Slug to induce epithelial-mesenchymal transition (EMT) during neural development and in diseases such as organ fibrosis or different types of cancer. Methods: We investigated the roles of SOX9 in pancreatic tumor cell plasticity, metastatic dissemination and chemoresistance using pancreatic cancer cell lines as well as mouse embryo fibroblasts. In addition, we characterized the clinical relevance of SOX9 in pancreatic cancer using human biopsies. Results: Gain- and loss-of-function of SOX9 in PDAC cells revealed that high levels of SOX9 increased migration and invasion, and promoted EMT and metastatic dissemination, whilst SOX9 silencing resulted in metastasis inhibition, along with a phenotypic reversion to epithelial features and loss of stemness potential. In both contexts, EMT factors were not altered. Moreover, high levels of SOX9 promoted resistance to gemcitabine. In contrast, overexpression of SOX9 was sufficient to promote metastatic potential in K-Ras transformed MEFs, triggering EMT associated with Snail/Slug activity. In clinical samples, SOX9 expression was analyzed in 198 PDAC cases by immunohistochemistry and in 53 patient derived xenografts (PDXs). SOX9 was overexpressed in primary adenocarcinomas and particularly in metastases. Notably, SOX9 expression correlated with high vimentin and low E-cadherin expression. Conclusions: Our results indicate that SOX9 facilitates PDAC progression and metastasis by triggering stemness and EMT.
Observational constraints on a decaying cosmological term
Creators: name: Nakamura, Riou
name: Hashimoto, Masa-aki
name: Ichiki, Kiyotomo
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the evolution of a universe with a decaying cosmological term (vacuum energy) that is assumed to be a function of the scale factor. In this model, while the cosmological term increases to the early universe, the radiation energy density is lower than the model with the cosmological "constant". We find that the effects of the decaying cosmological term on the expansion rate at the redshift z<2 is negligible. However, the decrease in the radiation density affects on the thermal history of the universe; e.g. the photon decoupling occurs at higher $z$ compared to the case of the standard ΛCDM model. As a consequence, a decaying cosmological term affects on the cosmic microwave background anisotropy. We show the angular power spectrum in DΛCDM model and compare with the Wilkinson Microwave Anisotropy Probe (WMAP) data.
description: 5 pages, 3 figures, Proceedings of International Symposium on Nuclear Astrophysics -Nuclei in the Cosmos IX-, CERN, Geneva, June 25-30, 2006
Χωρικές επιπτώσεις συγκοινωνιακών έργων σε υπεραστική κλίμακα
Creators: name: Κοκκάρας, Γεώργιος Σωτηρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Χωρικές
Επιπτώσεις
Υπεραστική κλίμακα
Spatial
Impacts
Interurban scale

description: Αντικείμενο της παρούσας Διπλωματικής Εργασίας, αποτελεί η μελέτη των χωρικών επιπτώσεων των συγκοινωνιακών έργων σε υπεραστική κλίμακα. Ουσιαστικά επιχειρείται η μελέτη της αλληλεπίδρασης μεταξύ της μεταφορικής υποδομής και του χώρου μέσα από τις χωρικές επιπτώσεις που παρατηρούνται στην ακτίνα επιρροής τους εκάστοστε συγκοινωνιακού έργου, μελετώντας διάφορες περιπτώσεις. Αρχικά, πραγματοποιείται μια αναφορά στο αντικείμενο, τη δομή και τους στόχους της μελέτης. Στη συνέχεια παρουσιάζεται ο αναπτυξιακός ρόλος των συγκοινωνιακών έργων, ενώ περιγράφεται και η αλληλεπίδραση μεταξύ συγκοινωνιακών έργων και χώρου. Επίσης παρουσιάζονται κάποιες από τις χωρικές επιπτώσεις που προκαλούνται από την κατασκευή μεγάλων συγκοινωνιακών έργων. Στη συνέχεια παρουσιάζονται οι μεθοδολογικές προσεγγίσεις οι οποίες εντοπίζονται στη βιβλιογραφία και χρησιμοποιούνται για την εκτίμηση των χωρικών επιπτώσεων. Συνεχίζοντας πραγματοποιείται η μέλετη διάφορων εφαρμογών. Οι περιπτώσεις αυτές αφορούν σε διάφορα συγκοινωνιακά έργα στην Ελλάδα αλλά και σε διεθνές επίπεδο και εστιάζουν σε συγκεκριμένες χωρικές επιπτώσεις οι καθεμία. Τέλος ακολουθούν τα συμπεράσματα που προκύπτουν από τη μελέτη και την αξιολόγηση των εφαρμογών αλλά και από την θεωρητική μελέτη των χωρικών επιπτώσεων.
description: The subject of this Τhesis is to study the spatial impacts of major transport infrastructure projects in interurban scale. Basically it attempts to study the interaction between infrastructure and space through the spatial effects being observed in the influence range of a transport project, studying various cases. Initially, a report on the object, structure and objectives of the study is realized. Subsequently it presents the development role of transportation projects, and describes the interaction between transportation projects and space. It also presents some of the spatial impacts caused by the construction of large transportation projects. Then the methodological approaches identified in the literature and used to assess the spatial impacts are presented. Continuing various cases are being studied. These cases relate to various transportation projects in Greece and internationally and focus on specific spatial impact each one. Finally follow the conclusions that occur from the study and evaluation of cases and the theoretical study of spatial effects.
Evolution of gynodioecy and dioecy: theoretical issues and the case of Bidens sandvicensis and B. cervicata
Creators: name: Schultz, Stewart T.
Publisher: name: University of British Columbia
Year: 2008

description: Numerical models are shown to allow the spread of males into equilibrium nucleo-cytoplasmic populations, resulting in the evolution of subdioecy or dioecy. Conditions for the evolution of subdioecy from two classes of nucleo-cytoplasmic gynodioecy are found to be similar to, and in some cases less stringent than, those required for evolution of sub dioecy from nuclear gynodioecy. Conditions for the evolution to dioecy from nucleo-cytoplasmic gynodioecy are likewise similar to those from nuclear gynodioecy, except that for someparameter sets, dioecy is not possible from nucleo-cytoplasmic gynodioecy due to the persistence of acytoplasmic polymorphism that allows continued production of hermaphrodites. Sex ratios in gynodioecious, endemic, Kauaian Bidens sandvicensis and B. cervicata are strongly correlated with elevation, aspect, and out crossing rate as estimated from analysis of electrophoretic genotypes at the phosphglucoisomerase and shikimate dehydrogenase loci. Female frequencies at four population centers averaged 0.33, 0.27, 0.14,and 0.18 from 1989 to 1992, and 1989 measured out crossing rates at these centers were0.50, 0.55, 0.75 and 0.71. In Bidens sandvicensis, significant inbreeding depression occurs in seed set (0.2 to0.5), germination (0.40), first-year survivorship in the field on Kauai (0.42), probability of first-year flowering (0.58) and number of heads produced per flowering plant (0.68). Total inbreeding depression thus exceeds 0.9. Performance of hermaphrodites relative to females was lower than one in seed set per head (0.7), and in quality of open-pollinated progeny: germination (0.73), first-year survivorship in the field (0.78), probability of flowering (0.95), and number of heads produced per flowering plant (0.80), although only the first three components were significantly different. Inbreeding depression in hermaphrodites thus appears sufficient to maintain females in populations of Bidens sandvicensis,and is responsible for at least 75% of the over threefold fitness of females relative to hermaphrodites. These results indicate that inbreeding depression can profoundly influence the evolution of floral structure and mating system on isolated oceanic islands.
Jaconaazar Souza Silva — Symbolic and Epistemological Bio of the Creator of XChronos
Creators: name: Souza Silva, Jaconaazar
Publisher: name: Zenodo
Year: 2025
Subjects: XChronos
Chronons
Hexachronons
Metachronos
Symbolic Time
Consciousness in Motion
Idealist Ontology
Philosophy of Time
Artificial Intelligence and Epistemology
Temporal Subjectivity
Symbolic Archivist
Open Knowledge
Digital Ontology
Copernican Clock
Philosophical Identity
Peripheral Thought
Conscious Language
Independent Thinker
Artistic Time Mapping

description: This document is the symbolic and epistemological biography of Jaconaazar Souza Silva, creator of the XChronos project — a Copernican clock of consciousness in motion. As a symbolic archivist of time, philosopher, public educator, and multimedia artist from Brazil, Jaconaazar develops original concepts such as Chronons, Hexachronons, and Metachronos, forming a unique ontological model of subjective time. This biography is registered with a DOI to ensure public citation, semantic preservation, and future visibility in open knowledge networks and artificial intelligences. The text also includes his academic background, artistic presence, and philosophical mission.
DUA - MultiD4CAD: Multimodal Dataset composed of CT and Clinical Features for Coronary Artery Disease Analysis
Creators: name: Prinzi, Francesco
name: Militello, Carmelo
name: Sollami, Giulia
name: Toia, Patrizia
name: La Grutta, Ludovico
name: Vitabile, Salvatore
Publisher: name: Zenodo
Year: 2025

description: Data Use Agreement for requesting the MultiD4CAD dataset.
D4.5 BMS Validation
Creators: name: MARBEL partners
Publisher: name: Zenodo
Year: 2025

description: This report contains the validation of the BMS developed in the framework of project MARBEL during the commissioning phase to ensure proper operation during the testing phase. The scope of the report is limited to the innovation present in the novel system.
description: MARBEL project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 963540
Dynamics of Quintessence Models of Dark Energy with Exponential Coupling to the Dark Matter
Creators: name: Gonzalez, Tame
name: Leon, Genly
name: Quiros, Israel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We explore quintessence models of dark energy which exhibit non-minimal coupling between the dark matter and the dark energy components of the cosmic fluid. The kind of coupling chosen is inspired in scalar-tensor theories of gravity. We impose a suitable dynamics of the expansion allowing to derive exact Friedmann-Robertson-Walker solutions once the coupling function is given as input. Self-interaction potentials of single and double exponential types emerge as result of our choice of the coupling function. The stability and existence of the solutions is discussed in some detail. Although, in general, models with appropriated interaction between the components of the cosmic mixture are useful to handle the coincidence problem, in the present study the coincidence can not be evaded due to the choice of the solution generating ansatz.
description: 10 pages, 7 figures
Περιέργεια ως χαρακτηριστικό προσωπικότητας και πρόθεση εξερεύνησης: επίδραση έργου κι αλληλεπιδράσεις με μεταγνωστικές εμπειρίες και θυμικό
Creators: name: Σιδηροπούλου, Ελένη Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Περιέργεια
Αυτορύθμιση
Μεταγιγνώσκειν
Curiosity
Self regulation
Metacognition

description: Στην παρούσα έρευνα εξετάστηκαν για τη συμπεριφορά εξερεύνησης οι επιδράσεις των χαρακτηριστικών προσωπικότητας, των χαρακτηριστικών του έργου και οι αλληλεπιδράσεις μεταξύ της επίδοσης, του θυμικού και των μεταγνωστικών εμπειριών, όπως αυτές προβλέπονται από το Μεταγνωστικό και Θυμικό Μοντέλο για την Αυτο-ρύθμιση (Efklides, 2011). Οι αντιπροσωπευτικοί παράγοντες προσωπικότητας συνήχθησαν από τις παραγοντικές αναλύσεις πέντε ερωτηματολογίων που χορηγήθηκαν σε δείγμα 283 ατόμων και συμπεριλάμβαναν την επιστημική περιέργεια, την αντιληπτική περιέργεια, την περιέργεια ως αίσθημα αποστέρησης, την ανάγκη για σκέψη, την έννοια του εαυτού σε σχέση στα μαθηματικά και τις στάσεις απέναντι στα μαθηματικά. Οι παράγοντες προσωπικότητας συσχετίστηκαν με το θυμικό, τις μεταγνωστικές εμπειρίες και την πρόθεση εξερεύνησης που ανέκυψαν κατα τη διάρκεια ενός έργου επίλυσης αριθμητικών ακολουθιών. Οι αριθμητικές ακολουθίες κατασκευάστηκαν ώστε να χαρακτηρίζονται από διαφορετικό βαθμό δυσκολίας, είδος πρότυπου επίλυσης και μέγεθος γραμματοσειράς,. Βρέθηκε σημαντική αρνητική μεταξύ συμπεριφοράς εξερεύνησης και επιστημικής περιέργειας. Διαπιστώθηκε, σημαντική αλληλεπίδραση της δυσκολίας και του είδους του προβλήματος αλλά και αλληλεπίδραση της δυσκολίας του προβλήματος και του μεγέθους γραμματοσειράς στην πρόθεση εξερεύνησης.
description: In this research the effects of curiosity as trait and task characteristics on the intention for exploration were examinated. We also studied the interactions between task performance, affect and metacognitive experiences, according to Metacognitive and Affective Model of Self-Regulated Learning (Efklides, 2011). The personality factors were deduced via factor analysis of five questionnaires which were administered to a sample of 283 students and included epistemic curiosity, perceptive curiosity, curiosity as feeling of deprivation, need for cognition, self concept in mathematics and attitude towards mathematics. These personality factors were correlated with affect, metacognitive experiences and the intention for exploration during an arithmetic sequence problem-solving task. The arithmetic sequences were constructed so that they differed in difficulty, pattern of solution and font size. A negative correlation was found between the intention for exploration and epistemic curiosity. Various interactions were found between the intention for exploration and task difficulty and type of task.
A Markov Process Inspired Cellular Automata Model of Road Traffic
Creators: name: Wang, Fa
name: Li, Li
name: Hu, Jianming
name: Ji, Yan
name: Yao, Danya
name: Zhang, Yi
name: Jin, Xuexiang
name: Su, Yuelong
name: Wei, Zheng
Publisher: name: arXiv
Year: 2008
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: To provide a more accurate description of the driving behaviors in vehicle queues, a namely Markov-Gap cellular automata model is proposed in this paper. It views the variation of the gap between two consequent vehicles as a Markov process whose stationary distribution corresponds to the observed distribution of practical gaps. The multiformity of this Markov process provides the model enough flexibility to describe various driving behaviors. Two examples are given to show how to specialize it for different scenarios: usually mentioned flows on freeways and start-up flows at signalized intersections. The agreement between the empirical observations and the simulation results suggests the soundness of this new approach.
description: revised according to the helpful comments from the anonymous reviewers
ANIMA D6.13 - Roadmap Final version
Creators: name: Van Oosten, Nico
Publisher: name: Zenodo
Year: 2022

description: ANIMA Task 6.1 is dedicated to the definition and update of a common strategic research roadmap for aviation noise reduction, involving all key aspects related to mitigation solutions, assessment of noise effects on populations and community engagement.
 In the past, strategic research roadmaps have been elaborated, mainly for aircraft noise reduction technology and, more recently, management of aviation noise impact. These roadmaps have been defined and maintained as an essential part of the work of the X-Noise network, funded through subsequent Coordination Actions in FP5, FP6 and FP7. However, in H2020 this network was no longer funded, and the maintenance of the roadmaps was stalled, until some funding became available in ANIMA to resume this work.
 In ANIMA Deliverable D6.3, a first version of a new set of roadmaps was presented. A new structure of subsets was developed, together with the design of a new, common, format. Since the enlarged scope with non-technology related topics, the standard Technology Readiness Level (TRL) scaling needed to be extended to reflect also the maturity level of these topics.
 In D6.8 several improvements to the first version of the roadmaps were included: A harmonised definition of the maturity scale Addition of a roadmap for UAV development Description of subtopics After the release of D6.8 the roadmaps have been reviewed and updated where needed. Also missing information was added where possible.
 In ANIMA a scenario-based revision process of the common roadmap was introduced. It was envisaged that the results from the scenario calculations V2 (presented in D4.10) would inform this process. However, due to time constraints the assessment of these results (D4.13 and D6.11) became available very late, due to which it was not possible to consider these as a source of information for the update process. These deliverables were therefore mainly used to check whether the latest available roadmaps are compatible with the findings of the scenario simulations.
 The present document presents the final version (V3) of the roadmaps, as elaborated in ANIMA.
description: This document is the public part of ANIMA D6.13 deliverable.
Additional file 4 of Claudin-2 inhibits renal clear cell carcinoma progression by inhibiting YAP-activation
Creators: name: Balawant Kumar
name: Ahmad, Rizwan
name: Giannico, Giovanna A.
name: Zent, Roy
name: Talmon, Geoffrey A.
name: Harris, Raymond C.
name: Clark, Peter E.
name: Vinata Lokeshwar
name: Punita Dhawan
name: Singh, Amar B.
Publisher: name: figshare
Year: 2021
Subjects: Biophysics
Biochemistry
Medicine
Cell Biology
Molecular Biology
Developmental Biology
Marine Biology
Cancer
Hematology

description: Additional file 4: Fig. S3. EGFR activation induces EMT in MDCK-II cells and specific loss of claudin-2 expression: (a) Representative phase-contrast images, and Immunofluorescent analysis of the Na+K+ ATPase expression and primary cilium (acetylated-tubulin); (b-c) Immunofluorescent co-localization of Ki-67 and claudin-2 proteins, and Quantitative analysis; (d-e) Representative images of MDCKIICON and MDCKII cells treated with EGF(100ng/ml), subjected to wound-healing (time-course analysis), and Quantitative analysis; (f-g) Anchorage-independent growth (Colony formation assay) in soft agar, and Quantitative analysis; (h-i) Immunoblot analysis of claudin proteins and EMT marker (vimentin and fibronectin), and Densitometric analysis (C= control); (j) Immunofluorescent analysis of the cellular expression and localization of claudin proteins and ZO-1. Arrow represent membrane tethered and disrupted expression of respective proteins. CON represent Control. Data is presented as mean+sem (scale bar =50 μM). Statistical significance was determined by student t test. **P