cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Thermal freeze-out versus chemical freeze-out reexamined
Creators: name: Prorok, Dariusz
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: An alternative, to the commonly used blast-wave, model describing the freeze-out hypersurface is applied to fit the $p_{T}$-spectra of identified hadrons measured at relativistic heavy-ion collisions at $\sqrt{s_{NN}}=62.4, 130$ and 200 GeV. Decays of resonances are taken into account completely. It has turned out that the fitted freeze-out temperature and baryon number chemical potential depend weakly on the centrality of the collision and their values are close to the chemical freeze-out values determined from fits to particle yield ratios.
description: 12 pages, 12 figures, a minor change of title, the final version published in Acta Physica Polonica B
Observer Design for Linear Aperiodic Sampled-Data Systems: A Hybrid Systems Approach
Creators: name: Ferrante, Francesco
name: Seuret, Alexandre
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Observer design for linear systems with aperiodic sampled-data measurements is addressed. To solve this problem, a novel hybrid observer is designed. The main peculiarity of the proposed observer consists of the use two output injection terms, one acting at the sampling instants and one providing an intersample injection. The error dynamics are augmented with a timer variable triggering the arrival of a new measurement and analyzed via hybrid system tools. Using Lyapunov theory, sufficient conditions for the convergence of the observer are provided. Relying on those conditions, an optimal LMI-based design is proposed for the observer gains. The effectiveness of the approach is illustrated in an example.
description: V1 is the original submission before peer review. V2 is the peer-reviewed version accepted for publication. V2 includes fixes to minor typos in the early access version of the paper and matches the final printed version to appear in the IEEE Control Systems Letters. V3 includes the link to the published version. V4 includes some missing numerical values in the example
Quantum cloning in coupled states of optical field and atomic ensemble by quasi-condensation of polaritons
Creators: name: Alodjants, A. P.
name: Arakelian, S. M.
name: Bagayev, S. N.
name: Chekhonin, I. A.
name: Egorov, V. S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider a new approach for storing quantum information by macroscopic atomic excitations of two level atomic system. We offer the original scheme of quantum cloning of optical field into the cavity polaritons containing the phase insensitive parametrical amplifier and atomic cell placed in the cavity. The high temperature quasi-condensation (and/or condensation) phenomenon for polaritons arising in the cavity under the certain conditions is proposed for the first time.
description: 11 pages, 1 postscript figure, uses iopart.cls
Ergotropy from quantum and classical correlations
Creators: name: Touil, Akram
name: Çakmak, Barış
name: Deffner, Sebastian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: It is an established fact that quantum coherences have thermodynamic value. The natural question arises, whether other genuine quantum properties such as entanglement can also be exploited to extract thermodynamic work. In the present analysis, we show that the ergotropy can be expressed as a function of the quantum mutual information, which demonstrates the contributions to the extractable work from classical and quantum correlations. More specifically, we analyze bipartite quantum systems with locally thermal states, such that the only contribution to the ergotropy originates in the correlations. Our findings are illustrated for a two-qubit system collectively coupled to a thermal bath.
description: 16 pages, 3 figures. Eq. 2 in the published version has a typo, please see the current arXiv version for the correct form
Koopman Operator Dynamical Models: Learning, Analysis and Control
Creators: name: Bevanda, Petar
name: Sosnowski, Stefan
name: Hirche, Sandra
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: Dynamical Systems (math.DS)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: The Koopman operator allows for handling nonlinear systems through a (globally) linear representation. In general, the operator is infinite-dimensional - necessitating finite approximations - for which there is no overarching framework. Although there are principled ways of learning such finite approximations, they are in many instances overlooked in favor of, often ill-posed and unstructured methods. Also, Koopman operator theory has long-standing connections to known system-theoretic and dynamical system notions that are not universally recognized. Given the former and latter realities, this work aims to bridge the gap between various concepts regarding both theory and tractable realizations. Firstly, we review data-driven representations (both unstructured and structured) for Koopman operator dynamical models, categorizing various existing methodologies and highlighting their differences. Furthermore, we provide concise insight into the paradigm's relation to system-theoretic notions and analyze the prospect of using the paradigm for modeling control systems. Additionally, we outline the current challenges and comment on future perspectives.
description: This is an authors' version of the work that is published in Annual Reviews in Control journal. Changes were made to this version by the publisher prior to publication
MPEC 2024-C95 : 2024 CR1
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 CR1

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Additional file 1 of Applicability of a digital health application for cancer patients: a qualitative non-participation analysis
Creators: name: Pfeifer, Klara
name: Tewes, Mitra
name: Kasper, Stefan
name: Hense, Jörg
name: Franco, Jan
name: Schuler, Martin
name: Schöbel, Christoph
name: Ates, Gülay
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: Supplementary Material 1.
Quantum spin Hall effect in three dimensional materials: Lattice computation of Z$_2$ topological invariants and its application to Bi and Sb
Creators: name: Fukui, T.
name: Hatsugai, Y.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We derive an efficient formula for Z$_2$ topological invariants characterizing the quantum spin Hall effect. It is defined in a lattice Brillouin zone, which enables us to implement numerical calculations for realistic models even in three dimensions. Based on this, we study the quantum spin Hall effect in Bi and Sb in quasi-two and three dimensions using a tight-binding model.
description: 5 pages, 5 figures
Overcoming Restraint: Composing Verification of Foreign Functions with Cogent
Creators: name: Cheung, Louis
name: O'Connor, Liam
name: Rizkallah, Christine
Publisher: name: arXiv
Year: 2021
Subjects: subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: Cogent is a restricted functional language designed to reduce the cost of developing verified systems code. Because of its sometimes-onerous restrictions, such as the lack of support for recursion and its strict uniqueness type system, Cogent provides an escape hatch in the form of a foreign function interface (FFI) to C code. This poses a problem when verifying Cogent programs, as imported C components do not enjoy the same level of static guarantees that Cogent does. Previous verification of file systems implemented in Cogent merely assumed that their C components were correct and that they preserved the invariants of Cogent's type system. In this paper, we instead prove such obligations. We demonstrate how they smoothly compose with existing Cogent theorems, and result in a correctness theorem of the overall Cogent-C system. The Cogent FFI constraints ensure that key invariants of Cogent's type system are maintained even when calling C code. We verify reusable higher-order and polymorphic functions including a generic loop combinator and array iterators and demonstrate their application to several examples including binary search and the BilbyFs file system. We demonstrate the feasibility of verification of mixed Cogent-C systems, and provide some insight into verification of software comprised of code in multiple languages with differing levels of static guarantees.
Buckling without bending morphogenesis: Nonlinearities, spatial confinement, and branching hierarchies
Creators: name: Gandikota, M. C.
name: Schwarz, J. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: During morphogenesis, a featureless convex cerebellum develops folds. As it does so, the cortex thickness is thinnest at the crest (gyri) and thickest at the trough (sulci) of the folds. This observation cannot be simply explained by elastic theories of buckling. A recent minimal model explained this phenomenon by modeling the developing cortex as a growing fluid under the constraints of radially spanning elastic fibers, a plia membrane and a nongrowing sub-cortex (Engstrom, et. al., PRX 2019). In this minimal buckling without bending morphogenesis (BWBM) model, the elastic fibers were assumed to act linearly with strain. Here, we explore how nonlinear elasticity influences shape development within BWBM. The nonlinear elasticity generates a quadratic nonlinearity in the differential equation governing the system's shape and leads to sharper troughs and wider crests, which is an identifying characteristic of cerebellar folds at later stages in development. As developing organs are typically not in isolation, we also explore the effects of steric confinement, and observe flattening of the crests. Finally, as a paradigmatic example, we propose a hierarchical version of BWBM from which a novel mechanism of branching morphogenesis naturally emerges to qualitatively predict later stages of the morphology of the developing cerebellum.
description: 12 pages, 7 figures
Sterile neutrinos: direct mixing effects versus induced mass matrix of active neutrinos
Creators: name: Smirnov, Alexei Yu.
name: Funchal, Renata Zukanovich
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Mixing of active neutrinos with sterile ones generate ``induced'' contributions to the mass matrix of active neutrinos $\sim m_S \sin^2θ_{aS}$, where $m_S$ is the Majorana mass of the sterile neutrino and $θ_{aS}$ is the active-sterile mixing angle. We study possible effects of the induced matrix which can modify substantially the implications of neutrino oscillation results. We have identified the regions of $m_S$ and $\sin^2θ_{aS}$ where the induced matrix (i) provides the dominant structures, (ii) gives the sub-dominant effects and (iii) where its effects can be neglected. The induced matrix can be responsible for peculiar properties of the lepton mixing and neutrino mass spectrum, in particular, it can generate the tri-bimaximal mixing. We update and discuss bounds on the induced masses from laboratory measurements, astrophysics and cosmology. We find that substantial impact of the induced matrix is possible if $m_S \sim 0.1-1$ eV and $\sin^2θ_{aS} \sim 10^{-3} - 10^{-2}$ or $m_S \geq 200$ MeV and $\sin^2θ_{aS} \leq 10^{-9}$. The bounds can be relaxed in cosmological scenarios with low reheating temperature, if sterile neutrinos decay sufficiently fast, or their masses change with time.
description: Figures updated, version to be published in Phys. Rev. D
Additional file 3 of Applicability of a digital health application for cancer patients: a qualitative non-participation analysis
Creators: name: Pfeifer, Klara
name: Tewes, Mitra
name: Kasper, Stefan
name: Hense, Jörg
name: Franco, Jan
name: Schuler, Martin
name: Schöbel, Christoph
name: Ates, Gülay
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: Supplementary Material 3.
Lower Limit to the Scale of an Effective Theory of Gravitation
Creators: name: Caldwell, R. R.
name: Grin, Daniel
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider a linearized, effective quantum theory of gravitation in which gravity weakens at energies higher than ~10^-3 eV in order to accommodate the apparent smallness of the cosmological constant. Such a theory predicts departures from the static Newtonian inverse-square force law on distances below ~0.05 mm. However, we show that such a modification also leads to changes in the long-range behavior of gravity and is inconsistent with observed gravitational lenses.
description: 4 pages, 1 figures. V3: matches published version
Additional file 4 of Applicability of a digital health application for cancer patients: a qualitative non-participation analysis
Creators: name: Pfeifer, Klara
name: Tewes, Mitra
name: Kasper, Stefan
name: Hense, Jörg
name: Franco, Jan
name: Schuler, Martin
name: Schöbel, Christoph
name: Ates, Gülay
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: Supplementary Material 4.
Observational constraints and predictions of the interacting dark sector with field-fluid mapping
Creators: name: Johnson, Joseph P
name: Sangwan, Archana
name: Shankaranarayanan, S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider an interacting field theory model that describes the dark energy - dark matter interaction. Only for a specific interaction term, this interacting field theory description has an equivalent interacting fluid description. For inverse power law potentials and linear interaction function, we show that the interacting dark sector model with field-fluid mapping is consistent with \textit{four cosmological data sets} -- Hubble parameter measurements (Hz), Baryonic Acoustic Oscillation data (BAO), Supernova Type Ia data (SN), and High redshift HII galaxy measurements (HIIG). More specifically, these data sets prefer a negative value of interaction strength in the dark sector and lead to consistent best-fit values of Hubble constant and other cosmological parameters. Having established that this interacting field theory model is consistent with cosmological observations, we obtain quantifying tools to distinguish between the interacting and non-interacting dark sector scenarios. We focus on the variation of the scalar metric perturbed quantities as a function of redshift related to structure formation, weak gravitational lensing, and the integrated Sachs-Wolfe effect. We show that the difference in the evolution becomes significant for $z < 20$, for all length scales, and the difference peaks at smaller redshift values $z < 5$. We then discuss the implications of our results for the upcoming missions.
description: Version 2: Obtained revised constraints on the model parameters with updated data. No significant changes in the model parameter constraints. Accepted in JCAP, 42 pages, 33 figures, 5 tables
Additional file 2 of Applicability of a digital health application for cancer patients: a qualitative non-participation analysis
Creators: name: Pfeifer, Klara
name: Tewes, Mitra
name: Kasper, Stefan
name: Hense, Jörg
name: Franco, Jan
name: Schuler, Martin
name: Schöbel, Christoph
name: Ates, Gülay
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: Supplementary Material 2.
Computational prediction of poteintial RNA interacting bacterial proteins.
Creators: name: Malvika Sharan
Publisher: name: F1000Research
Year: 2015

description: Bacterial pathogens translocate effector proteins into host cells that typically target specific protein components of signaling pathways in order to establish colonization. TAL effectors of the plant pathogen Xanthomonas are the only known example of nucleic acid interacting effectors that specifically target host DNA to induce expression of genes, which facilitate bacterial infection. Bacterial effectors that interact with RNA in eukaryotic hosts are unknown. Hence, an efficient method is required for computational identification and characterization of candidate effector proteins with potential to interact with RNA.
Even Parity, Orbital Singlet and Spin Triplet Pairing for Superconducting $La(O_{1-x}F_x)FeAs$
Creators: name: Dai, Xi
name: Fang, Zhong
name: Zhou, Yi
name: Zhang, Fu-chun
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In the present paper, we propose the parity even,orbital singlet and spin triplet pairing state as the ground state of the newly discovered super-conductor $LaO_{1-x}F_xFeAs$.The pairing mechanism involves both the special shape of the electron fermi surface and the strong ferromagnetic fluctuation induced by Hund's rule coupling.The special behavior of the Bogoliubov quasi-particle spectrum may leads to "Fermi arc" like anisotropy super-conducting gap, which can be detected by angle resolved photo emission(ARPES).The impurity effects are also discussed.
description: 4 pages, 3 figures
Η εξέλιξη των κύριων καλλιεργειών στην Ελλάδα:
Creators: name: Καραγιάννης, Αθανάσιος Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Γεωπονία
Ελλάδα
Κύριες καλλιέργειες
Agriculture
Greece
Major crops

description: Βασικός σκοπός της παρούσας διατριβής είναι να παρουσιαστεί ο βαθμός επίδρασης ορισμένων παραγόντων (τιμές παραγωγού, όροι εμπορίου, πολιτική κ.ά.) στην παραγωγή και την καλλιεργούμενη έκταση των πιο κύριων καλλιεργειών της Ελλάδας. Συγκεκριμένα, το πλήθος των καλλιεργειών που εξετάζονται στην διατριβή, είναι οι εξής: οι βιομηχανικές καλλιέργειες (καπνός, βαμβάκι, τομάτα, ζαχαρότευτλά), οι δενδρώδεις (μήλα, πορτοκάλια, ροδάκινα-νεκταρίνια), το σιτάρι, τα, τα σταφύλια και οι ελιές. Τα πρωτογενή δεδομένα της έρευνας βασίζονται στα στατιστικά στοιχεία της Διεθνούς Οργάνωσης και Τροφίμων (FAOstat) και του ΥπΑΑτ, για το χρονικό διάστημα 1991-2010. Με τη χρήση του οικονομετρικού πακέτου Gretl, έκδοση 1.9.14 και με την μέθοδο των ελαχίστων τετραγώνων (Ordinary Least Squares, OLS) βρέθηκε το κατά πόσο αυτοί οι παράγοντες επηρεάζουν τις καλλιέργειες. Επιπλέον, με την μέθοδο Holt Winters - No Seasonal, γίνεται πρόβλεψη για την μελλοντική εξέλιξη των παραγόμενων ποσοτήτων και των καλλιεργούμενων εκτάσεων των καλλιεργειών της χώρας μας, για τα έτη 2011-2015, καθώς επίσης μελετώνται και τα αίτια των προβλέψεων αυτών. Τα αποτελέσματα της έρευνας έδειξαν ότι οι δύο σημαντικότεροι παράγοντες που επηρεάζουν σε μεγάλο βαθμό τις καλλιέργειες είναι η εφαρμοζόμενη πολιτική και οι καιρικές συνθήκες, ενώ αυτοί με την μικρότερη επίδραση είναι οι ανεξάρτητες μεταβλητές των ετήσιων τιμών παραγωγού και της τεχνολογίας.
description: The main purpose of the present thesis is to show the degree of influence of certain factors (producer prices, terms of trade, politics, etc.) in the production and in the cultivated area of major crops in Greece. Specifically, the number of crops covered in this thesis, are as follows: industrial crops (tobacco, cotton, tomatoes, sugar beets), tree crops (apples, oranges, peaches-nectarines), and the crops of wheat, grapes and olives. The primary research data are based on statistics of Food and Agriculture Organization (FAOstat) and Ministry of Rural Development and Food, for the period 1991-2010. With the use of econometric parcel Gretl, version 1.9.14 and with the method of least squares (Ordinary Least Squares, OLS) found the exact percentages of the impact of factors in crops. In addition, with the method Holt Winters - No Seasonal, the future evolution of produced quantities and cultivated areas of crops in our country is forecasted, for the years 2011-2015, as well as studied the causes of these predictions. The results of the research show that the two major factors that largely affect the crops is the enforced policy and weather conditions, while those with less effect are the independent variables of annual producer prices and technology.
On the entropy and index of the winding endomorphisms of p-adic ring C$^*$-algebras
Creators: name: Aiello, Valeriano
name: Rossi, Stefano
Publisher: name: arXiv
Year: 2021
Subjects: subject: Operator Algebras (math.OA)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: For $p\geq 2$, the $p$-adic ring $C^*$-algebra $\mathcal{Q}_p$ is the universal $C^*$-algebra generated by a unitary $U$ and an isometry $S_p$ such that $S_pU=U^pS_p$ and $\sum_{l=0}^{p-1}U^lS_pS_p^*U^{-l}=1$. For any $k$ coprime with $p$ we define an endomorphism $χ_k\in{\rm End}(\mathcal{Q}_p)$ by setting $χ_k(U):=U^k$ and $χ_k(S_p):=S_p$. We then compute the entropy of $χ_k$, which turns out to be $\log |k|$. Finally, for selected values of $k$ we also compute the Watatani index of $χ_k$ showing that the entropy is the natural logarithm of the index.
Additional file 5 of Applicability of a digital health application for cancer patients: a qualitative non-participation analysis
Creators: name: Pfeifer, Klara
name: Tewes, Mitra
name: Kasper, Stefan
name: Hense, Jörg
name: Franco, Jan
name: Schuler, Martin
name: Schöbel, Christoph
name: Ates, Gülay
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: Supplementary Material 5.
Hard TeV spectra of blazars and the constraints to the IR intergalactic background
Creators: name: Katarzynski, K.
name: Ghisellini, G.
name: Tavecchio, F.
name: Gracia, J.
name: Maraschi, L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent gamma-ray observations of the blazar 1ES 1101-232 (redshift z=0.186) reveal that the unabsorbed TeV spectrum is hard, with spectral index $α\lesssim 0.5$ [$F(ν) \propto ν^{-α}$]. We show that simple one-zone synchrotron self-Compton model can explain such hard spectra if we assume a power law energy distribution of the emitting electrons with a relatively high minimum energy. In this case the intrinsic TeV spectrum can be as hard as $F(ν)\propto ν^{1/3}$, while the predicted X-ray spectrum can still be much softer. The observations of 1ES 1101-232 can therefore be reconciled with relatively high intensities of the infrared background, even if some extreme background levels can indeed be excluded. We show that the other TeV sources (Mrk 421, Mrk 501 and PKS 2155-304) can be interpreted in the same framework, with a somewhat larger minimum energy.
description: 5 pages, 3 figures, accepted for publication as a letter in MNRAS
Seismic shear capacity of reinforced concrete elements
Creators: name: Webster, Scott William Frederick
Publisher: name: University of British Columbia
Year: 2009

description: The objective of this thesis was to develop a better understanding of reinforced concrete columns with minimal (widely spaced) transverse reinforcement subjected to reversed cyclic shear. This thesis involves three main parts which are described below. A rational model for the shear capacity of reinforced concrete is developed which takes into account the effect of previously existing diagonal cracks. The model is an extension of the modified compression field theory which is one of the most advanced shear design methods. The model was implemented into a computer program, and predictions based on this proposed method are compared to other shear design models. A copy of the program is included in the thesis. To forward the development of a seismic shear model, an analytic study was undertaken in which the magnitude of stresses (both compressive and shear) at an arbitrarily inclined crack were investigated. In addition, by means of a literature review, the degradation of aggregate interlock across a crack interface when subjected to reverse cyclic loads was studied. In addition to the analytical work a pilot experimental program was carried out, in which eight reinforced concrete bridge column elements were subjected to reversed cyclic loading. The columns were subjected to different load combinations (axial load, bending moment and shear), and had different distributions of longitudinal reinforcement. The results of the testing program is compared to predictions based on the analytical model presented earlier and other shear design models. An important part of this study was the construction and calibration of an element testing apparatus which was used to test the specimens. The experimental program also proved valuable as a pilot study, where much was learned about the operation of the tester and the most appropriate specimen connection details. The testing apparatus has subsequently been used to test a further 12 specimens as part of this ongoing study.
Orbital currents in extended Hubbard models of high-T$_c$ cuprates
Creators: name: Weber, Cédric
name: Laeuchli, Andreas
name: Mila, Frédéric
name: Giamarchi, Thierry
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Motivated by the recent report of broken time-reversal symmetry and zero momentum magnetic scattering in underdoped cuprates, we investigate under which circumstances orbital currents circulating inside a unit cell might be stabilized in extended Hubbard models that explicitly include oxygen orbitals. Using Gutzwiller projected variational wave functions that treat on an equal footing all instabilities, we show that orbital currents indeed develop on finite clusters, and that they are stabilized in the thermodynamic limit if additional interactions, e.g. strong hybridization with apical oxygens, are included in the model.
description: 4 pages
Appearance of Random Matrix Theory in Deep Learning
Creators: name: Baskerville, Nicholas P
name: Granziol, Diego
name: Keating, Jonathan P
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Mathematical Physics (math-ph)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We investigate the local spectral statistics of the loss surface Hessians of artificial neural networks, where we discover excellent agreement with Gaussian Orthogonal Ensemble statistics across several network architectures and datasets. These results shed new light on the applicability of Random Matrix Theory to modelling neural networks and suggest a previously unrecognised role for it in the study of loss surfaces in deep learning. Inspired by these observations, we propose a novel model for the true loss surfaces of neural networks, consistent with our observations, which allows for Hessian spectral densities with rank degeneracy and outliers, extensively observed in practice, and predicts a growing independence of loss gradients as a function of distance in weight-space. We further investigate the importance of the true loss surface in neural networks and find, in contrast to previous work, that the exponential hardness of locating the global minimum has practical consequences for achieving state of the art performance.
description: 33 pages, 14 figures
Uncertainty-Aware Semi-Supervised Method Using Large Unlabeled and Limited Labeled COVID-19 Data
Creators: name: Alizadehsani, Roohallah
name: Sharifrazi, Danial
name: Izadi, Navid Hoseini
name: Joloudari, Javad Hassannataj
name: Shoeibi, Afshin
name: Gorriz, Juan M.
name: Hussain, Sadiq
name: Arco, Juan E.
name: Sani, Zahra Alizadeh
name: Khozeimeh, Fahime
name: Khosravi, Abbas
name: Nahavandi, Saeid
name: Islam, Sheikh Mohammed Shariful
name: Acharya, U Rajendra
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: The new coronavirus has caused more than one million deaths and continues to spread rapidly. This virus targets the lungs, causing respiratory distress which can be mild or severe. The X-ray or computed tomography (CT) images of lungs can reveal whether the patient is infected with COVID-19 or not. Many researchers are trying to improve COVID-19 detection using artificial intelligence. Our motivation is to develop an automatic method that can cope with scenarios in which preparing labeled data is time consuming or expensive. In this article, we propose a Semi-supervised Classification using Limited Labeled Data (SCLLD) relying on Sobel edge detection and Generative Adversarial Networks (GANs) to automate the COVID-19 diagnosis. The GAN discriminator output is a probabilistic value which is used for classification in this work. The proposed system is trained using 10,000 CT scans collected from Omid Hospital, whereas a public dataset is also used for validating our system. The proposed method is compared with other state-of-the-art supervised methods such as Gaussian processes. To the best of our knowledge, this is the first time a semi-supervised method for COVID-19 detection is presented. Our system is capable of learning from a mixture of limited labeled and unlabeled data where supervised learners fail due to a lack of sufficient amount of labeled data. Thus, our semi-supervised training method significantly outperforms the supervised training of Convolutional Neural Network (CNN) when labeled training data is scarce. The 95% confidence intervals for our method in terms of accuracy, sensitivity, and specificity are 99.56 +- 0.20%, 99.88 +- 0.24%, and 99.40 +- 0.18%, respectively, whereas intervals for the CNN (trained supervised) are 68.34 +- 4.11%, 91.2 +- 6.15%, and 46.40 +- 5.21%.
Η άδεια χρήσης σήματος, ιδίως υπό το πρίσμα του Ν. 4072/2012:
Creators: name: Φωτίου, Χρήστος Ανέστη
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Σήμα
Άδεια
Χρήση
Trademark
License
Use

description: Σκοπός της παρούσας διπλωματικής εργασίας είναι η μελέτη του θεσμού της παραχώρησης άδειας χρήσης σήματος, ιδίως υπό το πρίσμα του Ν. 4072/2012. Ειδικότερα, στο πρώτο μέρος αυτής παρουσιάζονται οι ρυθμίσεις του νέου Ν. 4072/2012 με έμφαση στην έννοια και τις προϋποθέσεις προστασίας του σήματος υπό το νέο νόμο, καθώς και τη διαδικασία καταχώρησης του σήματος. Επίσης, εξετάζεται τόσο η ανακοπή ως μέσο ανατροπής της θετικής απόφασης του εξεταστή της δήλωσης κατάθεσης σήματος όσο και η προσφυγή αφενός ενώπιον της Διοικητικής Επιτροπής Σημάτων και αφετέρου ενώπιον των Διοικητικών Δικαστηρίων με παρουσίαση και σχολιασμό όλων των συναφών νομοθετικών ρυθμίσεων. Περαιτέρω, στο δεύτερο μέρος της παρούσας εργασίας, αναλύεται η έννοια της άδειας χρήσης σήματος, τα είδη, καθώς και οι προϋποθέσεις παραχώρησης αυτής. Επιπρόσθετα, εξετάζονται οι υποχρεώσεις τόσο του σηματούχου όσο και του αδειούχου και αναλύονται οι ρυθμίσεις σχετικά με τη διάρκεια και τη λήξη του δικαιώματος του αδειούχου. Τέλος, παρουσιάζεται η σχέση μεταξύ του θεσμού της παραχώρησης άδειας χρήσης σήματος και του Δικαίου του Ελεύθερου Ανταγωνισμού.
description: The purpose of the present thesis is the study of the institution of trademark licensing according to Greek Law 4072/2012. Specifically, the first part of the thesis demonstrates the settings of the new Law 4072/2012 with an emphasis on the meaning and the protection of the trademark under the new Law, as well as the procedure for registration. The present thesis also examines both the caveat as a means to overthrow the positive decision of the examiner regarding the filing of a trademark and the first action before the Administrative Trademark Committee and the Administrative Court with presentation of all relevant legislation. Furthermore, the second part of this thesis, analyzes the meaning of Trademark Licensing, as well as types and conditions of this licensing. Additionally, the present thesis demonstrates the obligations of both the trademark owner and the licensee and analyzes the legislative regulations regarding the duration and the termination of the right of the licensee. Finally, the present thesis defines the relationship between the institution of trademark licensing and the Greek Law of Free Competition.
Ανάλυση της γενετικής παραλλακτικότητας σε εγχώριες ποικιλίες φακής (Lens culinaris) με μοριακούς και μορφολογικούς δείκτες:
Creators: name: Γλερίδου, Ανθούλα Μιχαήλ
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: φακή
γενετική παραλλακτικότητα
μοριακοί δείκτες URP
lentil
genetic diversity
URP molecular markers

description: H διερεύνηση της γενετικής παραλλακτικότητας σε καλλιεργούμενες ποικιλίες φακής αποτέλεσε αντικείμενο μελέτης πολλών ερευνητών σε διάφορες χώρες. Στην παρούσα εργασία έγινε ανάλυση της γενετικής παραλλακτικότητας σε 85 δείγματα φακής, εκ των οποίων οι 27 αποτελούν γενετικό υλικό που καλλιεργείται σήμερα στην Ελλάδα, ενώ οι υπόλοιπες 58 αντιπροσωπεύουν γενετικό υλικό που συλλέχθηκε από την Ελλάδα τα έτη 1941-1942 από Γερμανούς ερευνητές κατά τη διάρκεια του Β' παγκοσμίου πολέμου. Για τη μελέτη των δειγμάτων χρησιμοποιήθηκαν 12 εκκινητές URP (Universal Rice Primers) και 18 μορφολογικά χαρακτηριστικά. Η ανάλυση τόσο των μοριακών όσο και των μορφολογικών δεδομένων ομαδοποίησε τα δείγματα με βάση τη χρονολογία συλλογής τους και την περιοχή προέλευσής τους. Όσον αφορά τη συσχέτιση μοριακών και μορφολογικών δεδομένων, βρέθηκε ότι ήταν ασθενής και το γεγονός ύπαρξης συσχέτισης κάθε μορφολογικού χαρακτηριστικού με πολλές γενετικές θέσεις οδήγησε στο συμπέρασμα ότι τα συγκεκριμένα μορφολογικά χαρακτηριστικά είναι ποσοτικά, δηλαδή η έκφρασή τους ελέγχεται από πολλά γονίδια. Η διερεύνηση ύπαρξης διαφορών ανάμεσα στα δείγματα με βάση τη χρονολογία συλλογής τους είχε ως αποτέλεσμα την ύπαρξη στατιστικώς σημαντικών διαφορών ως προς 37 γενετικές θέσεις και όλα τα μορφολογικά χαρακτηριστικά. Συμπερασματικά, η χρήση των εκκινητών URP ήταν αποτελεσματική, διευκόλυνε τη διάκριση των δειγμάτων και η χρησιμοποίηση τους προτείνεται σε έρευνες που σχετίζονται με τη μελέτη της γενετικής παραλλακτικότητας στη φακή.
description: In the present study, a genetic analysis of Greek lentil germplasm was conducted using 85 lentil samples. The samples represented 27 currently cultivated lentil landraces and 58 accessions from the IPK- Gatersleben Genebank that were collected between 1941-1942 from various locations in Greece. The samples were analysed using 12 URP (Universal Rice Primers) primers and 18 morphological traits. The lentil's samples were grouped by molecular and morphological analysis, into clusters and sub-clusters on the basis of their collection date and their origin. Concerning the relation between molecular and morphological data a weak correlation was recorded indicating that no major markers affecting each morphological trait could be identified with this analysis. The study of samples' differences on the basis of their collection date resulted in statistical differences for 37 genetic loci and all morphological traits. The use of URP primers was effective, facilitated samples' discrimination and their use is recommended for genetic diversity studies in lentil.
ChIP-Array 2: integrating multiple omics data to construct gene regulatory networks
Creators: name: Panwen Wang
name: Qin, Jing
name: Yiming Qin
name: Zhu, Yun
name: Wang, Lily Yan
name: Mulin Jun Li
name: Zhang, Michael Q.
name: Junwen Wang
Publisher: name: F1000Research
Year: 2015

description: Transcription factors (TFs) play an important role in gene regulation. The interconnections among TFs, chromatin interactions, epigenetic marks and cis-regulatory elements form a complex gene transcription apparatus. Our previous work, ChIP-Array, combined TF binding and transcriptome data to construct gene regulatory networks (GRNs). Here we present an enhanced version, ChIP-Array 2, to integrate additional types of omics data including long-range chromatin interaction, open chromatin region and histone modification data to dissect more comprehensive GRNs involving diverse regulatory components. Moreover, we substantially extended our motif database for human, mouse, rat, fruit fly, worm, yeast and Arabidopsis, and curated large amount of omics data for users to select as input or backend support. With ChIP-Array 2, we compiled a library containing regulatory networks of 18 TFs/chromatin modifiers in mouse embryonic stem cell (mESC). The web server and the mESC library are publicly free and accessible at http://jjwanglab.org/chip-array.
Integrate everything but the kitchen sink: Data set selection and sensitivity estimation in collective factor models
Creators: name: Zitnik, Marinka
name: Blaz Zupan
Publisher: name: F1000Research
Year: 2015

description: Molecular biology data is rich in volume as well as heterogeneity. We can view individual data sets as relations between objects of different types, for example, function annotations describe relationships between genes and functions. We represent a large data compendium with a multiscale and multiplex relation graph. Recently, latent factor models were developed to fuse such representations and collectively infer accurate prediction models (Zitnik & Zupan, 2015). Here, we are interested in how changes in one relation (data set) affect the latent model of another relation in the context of a given collective latent factor model. For example, in a user-movie recommendation system, how would a change of casting affect user's movie preferences? In bioinformatics, how would a change in gene expression data influence prediction of gene-disease associations?

We have developed Forensic, an approach to estimate sensitivity between any two relations within a single run of inference algorithm. Forensic derives from the theory of Frechet derivation and matrix conditioning and can be used with any collective matrix factorization. We applied Forensic to a compendium of 100 experimental protein interaction data sets, whose sheer number increased the likelihood of outlier relations of lower quality. Forensic provided reliable estimates of data relevance and identified inconsistent relations. The estimated sensitivity correlated highly with the changes of relation reconstruction error when inconsistent relations were removed.

Our results suggest that Forensic could be used to detect low-quality experimental data sets and recommend which data sets should be included in data fusion.
Additional file 1 of Optimal lifestyle patterns for delaying ageing and reducing all-cause mortality: insights from the UK Biobank
Creators: name: Liu, Ce
name: Yang, Zhaoru
name: He, Li
name: Xiao, Ya
name: Zhao, Hao
name: Zhang, Ling
name: Liu, Tong
name: Chen, Rentong
name: Zhang, Kai
name: Luo, Bin
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: Supplementary Material 1
Stability of scar states in 2D PXP model against random disorders
Creators: name: Huang, Ke
name: Wang, Yu
name: Li, Xiao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Recently a class of quantum systems exhibiting weak ergodicity breaking has attracted much attention. These systems feature a special band of eigenstates called quantum many-body scar states in the energy spectrum. In this work we study the fate of quantum many-body scar states in a two-dimensional lattice against random disorders. We show that in both the square lattice and the honeycomb lattice the scar states can persist up to a finite disorder strength, before eventually being erased by the disorder. We further study the localization properties of the system in the presence of even stronger disorders and show that whether a full localization transition occurs depends on the type of disorder we introduce. Our study thus reveals the fascinating interplay between disorder and quantum many-body scarring in a two-dimensional system.
description: 11 pages, 11 figures, published version
Ultraluminous Infrared Galaxies
Creators: name: Lonsdale, Carol
name: Farrah, Duncan
name: Smith, Harding
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Ever since their discovery in the 1970's, UltraLuminous InfraRed Galaxies (ULIRGs; classically Lir>10^12Lsun) have fascinated astronomers with their immense luminosities, and frustrated them due to their singularly opaque nature, almost in equal measure. Over the last decade, however, comprehensive observations from the X-ray through to the radio have produced a consensus picture of local ULIRGs, showing that they are mergers between gas rich galaxies, where the interaction triggers some combination of dust-enshrouded starburst and AGN activity, with the starburst usually dominating. Very recent results have thrown ULIRGs even further to the fore. Originally they were thought of as little more than a local oddity, but the latest IR surveys have shown that ULIRGs are vastly more numerous at high redshift, and tantalizing suggestions of physical differences between high and low redshift ULIRGs hint at differences in their formation modes and local environment. In this review we look at recent progress on understanding the physics and evolution of local ULIRGs, the contribution of high redshift ULIRGs to the cosmic infrared background and the global history of star formation, and the role of ULIRGs as diagnostics of the formation of massive galaxies and large-scale structures.
description: Review article, published in "Astrophysics Update 2 - topical and timely reviews on astronomy and astrophysics". Ed. John W. Mason. Springer/Praxis books. ISBN: 3-540-30312-X. 53 pages, 5 figures. Higher quality figures available on request
Από τη γλώσσα της επιστήμης στη γλώσσα της διδασκαλίας;
Creators: name: Stogiannidis, Athanasios
name: Koutsoupias, Nikos
Publisher: name: Zenodo
Year: 2023

description: Από τη γλώσσα της επιστήμης στη γλώσσα της διδασκαλίας;  Ανάλυση περιεχομένου για τις Χριστολογικές και Εκκλησιολογικές έννοιες στο διδακτικό εγχειρίδιο  του Μαθήματος των Θρησκευτικών της Β’ Γυμνασίου.

Αθανασίου Στογιαννίδη,Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης

Νίκολάου Κουτσουπιά,Πανεπιστήμιο Δυτικής Μακεδονίας

Με την παρούσα μελέτη επιδιώκουμε να αναλύσουμε θεματικά το περιεχόμενοδύο βιβλίων: α. ενός σημαντικού θεολογικού συγγράματος (αρχιμ. Ι. Πόποβιτς,Άνθρωπος και Θεάνθρωπος.) και β. ενός σχολικού εγχειριδίου: Γ. Τσανανά – Α.Μπάρλου, Θρησκευτικά Β’ Γυμνασίου, εκδ. 2006. Το πρώτο βιβλίο, κατά τηγνώμη μας, αποδίδει με πολύ γλαφυρό τρόπο όλα τα θεμελιώδη στοιχεία τηςορθόδοξης θεολογίας σχετικά με το πρόσωπο του Χριστού και το περιεχόμενοτης έννοιας “Εκκλησία”. Σκοπός της έρευνάς μας είναι να διαπιστώσουμε κατάπόσο τα βασικά αυτά εννοιολογικά στοιχεία της ορθόδοξης θεολογίαςενυπάρχουν στο διδακτικό εγχειρίδιο του Μαθήματος των Θρησκευτικών της Β’Γυμνασίου – τηρουμένων των αναλογίων, πάντοτε, λόγω του εκπαιδευτικού καιπαιδαγωγικού χαρακτήρα ενός διδακτικού εγχειριδίου. Οι μέθοδοι πουχρησιμοποιούμε στην παρούσα μελέτη είναι η Παραγοντική Ανάλυση τωνΑντιστοιχιών και η Θεματική Ανάλυση Περιεχομένου. Τα πορίσματα της εν λόγωμελέτης έχουν εφαρμογή στην επιστήμη της Διδακτικής του Μαθήματος τωνΘρησκευτικών καθότι αφορούν στην ύλη και στο περιεχόμενο του εν λόγωμαθήματος.
Event-by-event fluctuations of azimuthal particle anisotropy in Au+Au collisions at sqrt(s_NN) = 200 GeV
Creators: name: Alver, B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: This paper presents the first measurement of event-by-event fluctuations of the elliptic flow parameter v_2 in Au+Au collisions at sqrt(s_NN) = 200GeV as a function of collision centrality. The relative non-statistical fluctuations of the v_2 parameter are found to be approximately 40%. The results, including contributions from event-by-event elliptic flow fluctuations and from azimuthal correlations that are unrelated to the reaction plane (non-flow correlations), establish an upper limit on the magnitude of underlying elliptic flow fluctuations. This limit is consistent with predictions based on spatial fluctuations of the participating nucleons in the initial nuclear overlap region. These results provide important constraints on models of the initial state and hydrodynamic evolution of relativistic heavy ion collisions.
description: 5 pages, 2 figures, Published in Phys. Rev. Lett.