cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Role of Tumor Treating Fields (TTFields) in the Management of High-Grade Gliomas
Creators: name: Farooq, Mustafa
name: Patel, Rahul
name: Farooq, Maheen
name: Mehra, Mehul
Publisher: name: Continental Journal of Medical Research
Year: 2024

description: High-grade gliomas, such as glioblastoma, are aggressive brain tumors with limited treatment options and poor patient outcomes. Tumor Treating Fields (TTFields) have emerged as a novel therapeutic approach that uses alternating electric fields to disrupt cell division. This review synthesizes current evidence on TTFields, highlighting key findings from clinical studies. The EF-14 trial demonstrated that adding TTFields to maintenance temozolomide significantly improved progression-free survival (6.7 months vs. 4.0 months; HR 0.63, 95% CI 0.52-0.76) and overall survival (20.9 months vs. 16.0 months; HR 0.63, 95% CI 0.53-0.76) compared to temozolomide alone. Other studies suggest that TTFields can enhance the effectiveness of radiation therapy by increasing DNA damage in tumor cells. However, challenges such as patient compliance, cost, and variable tumor response remain. Future research directions include combining TTFields with noveltherapies, improving device technology, and expanding its use to other cancer types.

Keywords: High-grade gliomas, Tumor Treating Fields, TTFields, glioblastoma, non-invasive therapy, electric fields, cancer treatment
IronMan: GNN-assisted Design Space Exploration in High-Level Synthesis via Reinforcement Learning
Creators: name: Wu, Nan
name: Xie, Yuan
name: Hao, Cong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Hardware Architecture (cs.AR)
subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Despite the great success of High-Level Synthesis (HLS) tools, we observe several unresolved challenges: 1) the high-level abstraction of programming styles in HLS sometimes conceals optimization opportunities; 2) existing HLS tools do not provide flexible trade-off (Pareto) solutions among different objectives and constraints; 3) the actual quality of the resulting RTL designs is hard to predict. To address these challenges, we propose an end-to-end framework, namelyIronMan. The primary goal is to enable a flexible and automated design space exploration (DSE), to provide either optimal solutions under user-specified constraints, or various trade-offs among different objectives (such as different types of resources, area, and latency). Such DSE either requires tedious manual efforts or is not achievable to attain these goals through existing HLS tools. There are three components in IronMan: 1) GPP, a highly accurate graph-neural-network-based performance and resource predictor; 2) RLMD, a reinforcement-learning-based multi-objective DSE engine that explores the optimal resource allocation strategy, to provide Pareto solutions between different objectives; 3) CT, a code transformer to assist RLMD and GPP, which extracts the data flow graph from original HLS C/C++ and automatically generates synthesizable code with HLS directives. The experimental results show that: 1) GPP achieves high prediction accuracy, reducing prediction errors of HLS tools by 10.9x in resource utilization and 5.7x in timing; 2) RLMD obtains optimal or Pareto solutions that outperform the genetic algorithm and simulated annealing by 12.7% and 12.9%, respectively; 3) IronMan is able to find optimized solutions perfectly matching various DSP constraints, with 2.54x fewer DSPs and up to 6x shorter latency than those of HLS tools while being up to 400x faster than the heuristic algorithms and HLS tools.
Portfolio Approaches in Constraint Programming
Creators: name: Amadini, Roberto <1984>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: INF/01 Informatica

description: Recent research has shown that the performance of a single, arbitrarily efficient algorithm can be significantly outperformed by using a portfolio of —possibly on-average slower— algorithms. Within the Constraint Programming (CP) context, a portfolio solver can be seen as a particular constraint solver that exploits the synergy between the constituent solvers of its portfolio for predicting which is (or which are) the best solver(s) to run for solving a new, unseen instance.
In this thesis we examine the benefits of portfolio solvers in CP. Despite portfolio approaches have been extensively studied for Boolean Satisfiability (SAT) problems, in the more general CP field these techniques have been only marginally studied and used. We conducted this work through the investigation, the analysis and the construction of several portfolio approaches for solving both satisfaction and optimization problems. We focused in particular on sequential approaches, i.e., single-threaded portfolio solvers always running on the same core.
We started from a first empirical evaluation on portfolio approaches for solving Constraint Satisfaction Problems (CSPs), and then we improved on it by introducing new data, solvers, features, algorithms, and tools. Afterwards, we addressed the more general Constraint Optimization Problems (COPs) by implementing and testing a number of models for dealing with COP portfolio solvers. Finally, we have come full circle by developing sunny-cp: a sequential CP portfolio solver that turned out to be competitive also in the MiniZinc Challenge, the reference competition for CP solvers.
The Effective Potential, the Renormalisation Group and Vacuum Stability
Creators: name: Einhorn, Martin B.
name: Jones, D. R. Timothy
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We review the calculation of the the effective potential with particular emphasis on cases when the tree potential or the renormalisation-group-improved, radiatively corrected potential exhibits non-convex behaviour. We illustrate this in a simple Yukawa model which exhibits a novel kind of dimensional transmutation. We also review briefly earlier work on the Standard Model. We conclude that, despite some recent claims to the contrary, it can be possible to infer reliably that the tree vacuum does not represent the true ground state of the theory.
description: 23 pages; 5 figures; v2 includes minor changes in text and additional references
Ναυτιλία και αλιεία στο έργο του Λουκιανού:
Creators: name: Τσαλικίδου, Μακρίνα Στέφανου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: ναυτιλία
αλιεία
Λουκιανός
shipping
fishery
Lucian

description: Σκοπός της διπλωματικής εργασίας είναι η μελέτη των στοιχείων σχετικά με τη ναυτιλία και την αλιεία, όπως αυτά εντοπίζονται μέσα στο συνολικό έργο του σατιρικού συγγραφέα Λουκιανού από τα Σαμόσατα. Εξετάζονται οι διάφορες μορφές εμφάνισής τους, λόγου χάρη ως εικόνες, περιγραφές, μεταφορές ή στο πλαίσιο μιας παρομοίωσης, καθώς και η λειτουργία τους μέσα στο κείμενο. Γίνεται φανερό ότι ο κύριος στόχος της χρήσης τους είναι η σάτιρα και η πρόκληση χιούμορ μέσα από την αντιπαραβολή καταστάσεων, αντικειμένων ή έμβιων όντων από τον κόσμο της θάλασσας με αντίστοιχες καταστάσεις ή πρόσωπα της καθημερινής ζωής. Ιδιαιτέρως βάλλεται η παραποίηση της φιλοσοφίας και της ρητορικής από τους συγχρόνους του συγγραφέα, αλλά και κάθε είδους κατάχρηση. Ένα μικρό κεφάλαιο παίρνει αφορμή από τη μεταθανάτια 'ζωή' και τους κατοίκους του κάτω κόσμου
description: The purpose of this thesis is to study the details related to shipping and fishery, such as those identified in the overall work of satirical writer Lucian of Samosata. It examines the various forms of appearance, for example as images, descriptions, or transport in a simile, and their function in the text. It becomes obvious that the main objective of their use is the satire and humor challenge through the comparison of situations, objects or living beings from the world of the sea with corresponding situations or persons of everyday life. Particularly challenged is the misrepresentation of philosophy and rhetoric by the contemporaries of the author, and every other kind of abuse. A short chapter takes the occasion of the posthumous "life" and the inhabitants of the underworld.
Essays in the Economics of Ageing
Creators: name: Ferrari, Irene <1985>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: SECS-P/06 Economia applicata

description: In the first paper, I assess if financial incentives may be used as an effective device to induce workers to postpone retirement by evaluating the Italian so called “super bonus” reform. The bonus consisted in economic incentives given for a limited period to private sector workers who had reached the requirements for seniority pension. Crucially for this study, public workers were not entitled to the bonus. Using data from the Bank of Italy Survey on Household Income andWealth, and exploiting the DID-Probit strategy proposed by Blundell et al. (JEEA, 2004), I assess the effect of the bonus on the decision to postpone retirement, by comparing private and public workers before and after the reform. Results suggest a reduction of 12ppt in the proportion of private workers who decided to retire among those qualifying for retirement. Results also suggest, not trivially, that most of the effect of the reform is driven by low-income workers. Finally, I propose an estimate of the extensive margin elasticity of Italian older workers.
The second study estimates a structural reduced form of the “option value” model developed by Stock and Wise (1990) using Italian data from the Survey of Health, Ageing and Retirement in Europe (SHARE).Exploiting exogenous changes in social security wealth (SSW) results show a significant effect in the expected direction of SSW and of marginal incentives to retire. Results are robust even after controlling for individual heterogeneity and its correlation with financial incentives.
Using detailed information on individuals, the results also highlights the importance
of individual and job characteristics, which have been very little explored by this literature, as determinants of retirement. This suggests the potential of “tagging” in the design of social security incentives in order to reduce choice distortions and improve the overall efficiency of the system.
Manual de Referencia en Mejores Prácticas de Gestión de Datos Oceánicos Número 5 / 2020.
Creators: name: García Valencia, Carolina
name: Maldonado Morales, Luisa Fernanda
name: Pyszczek, Oscar Luis
name: Bernal Suárez, Néstor Ricardo
name: Rivera De La Torre, Christian Jesús
name: Ortiz Martínez, Ruby Viviana
name: Garzón Barrios, Jaime Alberto
Publisher: name: Ed. Dimar
Year: 2020
Subjects: subject: Parameter Discipline::Marine geology
subject: Parameter Discipline::Atmosphere
subject: Parameter Discipline::Cross-discipline
subject: Parameter Discipline::Biological oceanography
subject: Parameter Discipline::Terrestrial
subject: Data Management Practices::Data search and retrieval
subject: Data Management Practices::Data compression

description: In the fifth year of operation and the 2015-2020 Work Plan completed, the National Oceanic Data and Information Coordination Committee (Spanish: Comité Técnico Nacional de Coordinación de Datos e Información Oceánica, CTN Diocean) of the Colombian Ocean Commission (CCO), reliese its digital publication "Reference Manual on Ocean Best Data Management Practices" number 5 of 2020, in its commitment to provide information to the community about experiences in the implementation of good and best practices by producers, users, administrators and managers of the ocean data in the national level, in different disciplines such as oceanography, marine meteorology, biodiversity, protected areas, marine environment, etc. This title presents an inventory of colombian coastal-marine indicator; analysis of a national survey on ocean data and information access carried out in 2019; the activities development by the Committee in the last five years, and finally, a contribution from the Colombian Geological Service (SGC) with a review of geographic information standards implemented in the country since 2003, through Committee 028 of the Colombian Institute of Technical Standards and Certification (Spanish: Instituto Colombiano de Normas Técnicas y Certificación, ICONTEC)
A new, non-linear analysis of layered soil-pile-superstructure seismic response
Creators: name: Khan, Anuz K.
Publisher: name: University of British Columbia
Year: 2009

description: A non-linear finite element analysis for determining the seismic response of piles in multilayered soil deposit is presented. The analysis incorporates pile material and geometric non-linearities, P-A effects, non-linear load deformation behavior of soil-pile interaction, pile separation and the non-linear shear stress-strain relationship in the freefield soil. The soil shear stress-strain relation is expressed based on Hardin and Drenvich's model. The pile material stress-strain relation is based on a elastic-plastic model. Near field soil is replaced with a continuous foundation based on Yan-Byrne or American Petroleum Institute P-y curves. Time integration is performed utilizing Newmark-P integration scheme. Numerical integration of the virtual work equations has been carried out with Gauss quadrature. The resulting set of non-linear equations is solved by using the Newton-Raphson scheme. The method of analysis are incorporated in two programs : QUIVER and PILEUBC. The program QUIVER captures the seismic response of soil deposit and later is used as a module in the main program PILEUBC, in which the response of a single pile is predicted for an earthquake excitation. The program predicts time varying acceleration, velocity, displacement, bending/axial stress and strain, bending moment and shear force in the pile. The program is able to successfully simulate the seismic response of piles. Numerical investigations have been carried out to verify the results and test the capabilities of the program. A linearized closed form solution based on Laplace transformation for free-field is developed for comparison with the finite element analysis.
Group+ Γεφύρωση των Κοινωνικών Δικτύων και Σημασιολογική Αποτύπωση των Χρηστών τους:
Creators: name: Χατζηαμανέτογλου, Δημήτριος Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Σημασιολογικός Ιστός
Κοινωνικά Δίκτυα
Οντολογία
Semantic Web
Social Networks
Ontology
RDF
FOAF
Dublin Core

description: Ένας από τους κυριότερους στόχους του Σημασιολογικού Ιστού είναι η πρόσβαση σε αποθηκευμένα δεδομένα χρησιμοποιώντας οντολογίες και λογική για εξαγωγή πληροφορίας και συμπερασμάτων κατανοητά από μηχανές. Η Κοινωνική Δικτύωση στις μέρες μας έχει λάβει τεράστιες διαστάσεις, έχοντας αποθηκευμένα δεδομένα εκατομμυρίων χρηστών ανά τον κόσμο. Η πληθώρα των Κοινωνικών Δικτύων έχει οδηγήσει στο φαινόμενο της ταυτόχρονης ύπαρξης κοινών δεδομένων ιδίων χρηστών σε διαφορετικές τοποθεσίες. Στην εργασία αυτή, παρουσιάζεται η εφαρμογή Group+, η οποία συλλέγει στοιχεία των χρηστών από τέσσερα διαφορετικά Κοινωνικά Δίκτυα, εστιάζοντας σε δεδομένα ερευνητικού και ακαδημαϊκού ενδιαφέροντος καθώς επίσης και σε δεδομένα γεωτοποθεσίας, προσφέροντας αυτά σε μορφή RDF με χρήση των λεξιλογίων FOAF και Dublin Core, μέσω κατάλληλης προγραμματιστικής διεπαφής (API).
description: One of the main goals of the Semantic Web is access to stored data using ontologies and reasoning for information extraction understood by machines. The Social Networking nowadays has taken a heavy toll, having stored data of millions of users around the world. The multitude of social networks has led to the phenomenon of the simultaneous existence of common user data in different locations. In this paper, we present the application Group +, which collects user data from four different social networks, focusing on data related to research and academia as well geolocation data, offering them in RDF format using FOAF and Dublin Core vocabularies, through appropriate application programming interface (API) .
Rigorous results in Spin Glasses and Monomer-Dimer systems
Creators: name: Mingione, Emanuele <1980>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: MAT/07 Fisica matematica

description: In this  work I reported recent results in the field of Statistical
Mechanics of Equilibrium, and in particular in Spin Glass models and Monomer Dimer models . 
We start giving the mathematical background and the general formalism
for Spin (Disordered) Models with some of their applications to physical and mathematical problems.

Next we move on general aspects of
the theory of spin glasses, in particular to the Sherrington-Kirkpatrick model which is of fundamental interest for the
work. In Chapter 3, we introduce the Multi-species Sherrington-Kirkpatrick
model (MSK), we prove the existence of the thermodynamical limit and the
Guerra's Bound for the quenched pressure together with a detailed analysis of
the annealed and the replica symmetric regime. The result is a multidimensional
generalization of the Parisi's theory. Finally we brie
y illustrate the strategy of
the Panchenko's proof of the lower bound.
In Chapter 4 we discuss the Aizenmann-Contucci and the Ghirlanda-Guerra identities for a wide class of Spin Glass models. As an example of
application, we discuss the role of these identities in the proof of the lower bound.
 In Chapter 5 we introduce the basic mathematical formalism of Monomer
Dimer models. We introduce a Gaussian representation of the partition function
that will be fundamental in the rest of the work.
In Chapter 6, we introduce an interacting Monomer-Dimer model. 
Its exact solution is derived and a detailed study of its analytical properties and
related physical quantities is performed.
In Chapter 7, we introduce a quenched randomness in the 
Monomer Dimer model 
 and show that, under suitable conditions the
pressure is a self averaging quantity. The main result is that, if we consider
randomness only in the monomer activity, the model is exactly solvable.
Detecting scale anomaly in chiral phase transition of QCD: new critical endpoint pinned down
Creators: name: Kawaguchi, Mamiya
name: Matsuzaki, Shinya
name: Tomiya, Akio
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Violation of scale symmetry, scale anomaly, being a radical concept in quantum field theory, is of importance to comprehend the vacuum structure of QCD, and should potentially contribute to the chiral phase transition in thermal QCD, as well as the chiral and U(1) axial symmetry. Though it should be essential, direct evidence of scale anomalies has never been observed in the chiral phase transition. We propose a methodology to detect a scale anomaly in the chiral phase transition, which is an electromagnetically induced scale anomaly: apply a weak magnetic field background onto two-flavor massless QCD with an extremely heavy strange quark, first observe the chiral crossover; second, adjusting the strange quark mass to be smaller and smaller, observe the second-order chiral phase transition, and then the first-order one in the massless-three flavor limit. Thus, the second-order chiral phase transition, observed as the evidence of the quantum scale anomaly, is a new critical endpoint. It turns out that this electromagnetic scale anomaly gets most operative in the weak magnetic field regime, rather than a strong field region. We also briefly address accessibility of lattice QCD, a prospected application to dense matter system, and implications to astrophysical observations, such as gravitational wave productions provided from thermomagnetic QCD-like theories.
description: 23 pages, 7 figures, some references added, minor corrections made, version accepted in JHEP
Size dependence of the minimum excitation gap in the Quantum Adiabatic Algorithm
Creators: name: Young, A. P.
name: Knysh, S.
name: Smelyanskiy, V. N.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the typical (median) value of the minimum gap in the quantum version of the Exact Cover problem using Quantum Monte Carlo simulations, in order to understand the complexity of the quantum adiabatic algorithm (QAA) for much larger sizes than before. For a range of sizes, N <= 128, where the classical Davis-Putnam algorithm shows exponential median complexity, the QAA shows polynomial median complexity. The bottleneck of the algorithm is an isolated avoided crossing point of a Landau-Zener type (collision between the two lowest energy levels only).
description: 4 pages, 5 figures
Cooperative Cognitive Wireless Networks over TV White and Gray Spaces
Reti Wireless Cognitive Cooperanti su TV White e Grey Spaces
Creators: name: Bedogni, Luca <1985>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: INF/01 Informatica

description: Wireless networks rapidly became a fundamental pillar of everyday activities. Whether at work or elsewhere, people often benefits from always-on connections. This trend is likely to increase, and hence actual technologies struggle to cope with the increase in traffic demand. To this end, Cognitive Wireless Networks have been studied. These networks aim at a better utilization of the spectrum, by understanding the environment in which they operate, and adapt accordingly. In particular recently national regulators opened up consultations on the opportunistic use of the TV bands, which became partially free due to the digital TV switch over. In this work, we focus on the indoor use of of TVWS. Interesting use cases like smart metering and WiFI like connectivity arise, and are studied and compared against state of the art technology. New measurements for TVWS networks will be presented and evaluated, and fundamental characteristics of the signal derived. Then, building on that, a new model of spectrum sharing, which takes into account also the height from the terrain, is presented and evaluated in a real scenario. The principal limits and performance of TVWS operated networks will be studied for two main use cases, namely Machine to Machine communication and for wireless sensor networks, particularly for the smart grid scenario.

The outcome is that TVWS are certainly interesting to be studied and deployed, in particular when used as an additional offload for other wireless technologies. Seeing TVWS as the only wireless technology on a device is harder to be seen: the uncertainity in channel availability is the major drawback of opportunistic networks, since depending on the primary network channel allocation might lead in having no channels available for communication. TVWS can be effectively exploited as offloading solutions, and most of the contributions presented in this work proceed in this direction.
A psychometric modeling approach to fuzzy rating data
Creators: name: Calcagnì, Antonio
name: Cao, Niccolò
name: Rubaltelli, Enrico
name: Lombardi, Luigi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applications (stat.AP)
subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences
subject: 62P25, 62-08, 62P15

description: Modeling fuzziness and imprecision in human rating data is a crucial problem in many research areas, including applied statistics, behavioral, social, and health sciences. Because of the interplay between cognitive, affective, and contextual factors, the process of answering survey questions is a complex task, which can barely be captured by standard (crisp) rating responses. Fuzzy rating scales have progressively been adopted to overcome some of the limitations of standard rating scales, including their inability to disentangle decision uncertainty from individual responses. The aim of this article is to provide a novel fuzzy scaling procedure which uses Item Response Theory trees (IRTrees) as a psychometric model for the stage-wise latent response process. In so doing, fuzziness of rating data is modeled using the overall rater's pattern of responses instead of being computed using a single-item based approach. This offers a consistent system for interpreting fuzziness in terms of individual-based decision uncertainty. A simulation study and two empirical applications are adopted to assess the characteristics of the proposed model and provide converging results about its effectiveness in modeling fuzziness and imprecision in rating data.
FFT-Mutant kit: A novel library for the design of de-novo mutations using mathematical modeling techniques, data mining and machine learning
Creators: name: Medina, David
name: Olivera-Nappa, Álvaro
Publisher: name: F1000 Research Limited
Year: 2019

description: Designing mutations to get desirable biological activities is one of the most recurrent problems in biotechnology. Experimental methods imply large time, economic costs and limit the search space for mutants. Computational tools appear as a powerful solution for this challenge. Nevertheless, the latent problem still persists.
We propose FFT-Mutant Kit, a novel tool that allows to design mutations from linear sequences, digitizing their physicochemical properties, considering for their evaluation, structural and phylogenetic information and the application of techniques of data mining and pattern recognition. Tool trains models through meta-learning techniques. The descriptors are based on frequency spectra of the protein obtained from the coding of the residues and digitized through Fourier Transforms. Dataset is composed of homolog proteins whose characteristics are known. New mutations and to evaluate their potential effect, physicochemical, thermodynamic and phylogenetic properties are considered as a pre-filter stage. The tool applies trained models to associate mutations and their expected effect on the target variable and the relevant physicochemical properties for describing the suggested mutations.
Finally, it is believed that this tool will be a significant contribution when designing mutants with desirable biological activities and a powerful means of studying proteins from the digitalization of their physicochemical properties.
Θρησκεία και κοινωνία στον Γεώργιο Γεμιστό- Πλήθωνα:
Creators: name: Γκίλια, Ουρανία Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Γεώργιος Γεμιστός
Υστεροβυζαντινή περίοδος
Πλατωνική πολιτεία
George Gemistos
Ysterobyzantini era
Platwn society

description: Η ισχυρή προσωπικότητα του Γεωργίου Γεμιστού Πλήθωνα, ήταν καταλυτική στη διαμόρφωση του πνευματικού κόσμου του «Μορέως», της «Αναγέννησης», αλλά και του μετέπειτα σύγχρονου κόσμου. Το συγγραφικό έργο του Πλήθωνος το οποίο κινείται σε πολλούς θεματικούς άξονες, επηρέασε σημαντικά συγχρόνους του, αλλά και μεταγενέστερους του και δέχθηκε την αναγνώριση πολλών μεγάλων προσωπικοτήτων της εποχής που έζησε. Ο Γεμιστός ήθελε την αποκατάσταση του Γένους των Ελλήνων, με την ανόρθωση της πολιτείας, την αρμονική της λειτουργία και την εθνική της ενότητα. Οι κοινωνικοπολιτικές του απόψεις αποκτούν ιδιαίτερη σπουδαιότητα για τον Νεοελληνισμό, γιατί είναι ίσως ο πρώτος «νεοέλλην» πολιτικός που είχε στρέψει το βλέμμα του στο απώτερο και μακρύτερο Ελληνικό παρελθόν, αλλά ακόμα και στο μέλλον, ξεπερνώντας το Βυζαντινό παρόν. Η προσωπικότητα του Γεωργίου Γεμιστού Πλήθωνα, αντιμετωπίστηκε διττά, κάποιες φορές με αυστηρότητα και κάποιες άλλες με εναντίωση, άλλες με θαυμασμό και αναγνώριση, ανάλογα κάθε φορά με τις θρησκευτικές, ιδεολογικές, και κοινωνικές αντιλήψεις και πεποιθήσεις των κριτών του. Στην παρούσα εργασία θα εστιάσουμε στις απόψεις του Γεωργίου Γεμιστού Πλήθωνα για την θρησκεία και το ρόλο της στα ταραγμένα εκείνα χρόνια που βρισκόταν το βυζάντιο καθώς και την ιδανική κοινωνία που σύμφωνα με τις σκέψεις του δεν είναι άλλη από την Πλατωνική.
description: The strong personality of George Gemistos Plethon, was a catalyst in the formation of the spiritual world of the "Morea", "rebirth", and the later modern world The writings of Plethon which moves in many thematic axes, significantly influenced contemporaries, but downstream of and accepted the recognition of many great personalities of the era who lived. George Gemistos wanted the restoration of the genus of the Greeks, the recovery of state and the harmonic function and its national unity. His socio-political views have particular importance for the Neoellinismo, because he is probably the first "neoellin" politician who had turned his gaze on distant and longest Greek past, but even in the future, overcoming the Byzantine present. The personality of George Gemistos Plethon, countered dually, sometimes encountered with rigor and some other with hostility, other with admiration and recognition, accordingly each time with religious, ideological, and social perceptions and beliefs of his judges. In this paper we will focus on the views of George Gemistos Plethon for the religion and its role in troubled those years it was Byzantium as well as the ideal society according to his thoughts is none other than Platonic.
Structural patterns for document engineering: from an empirical bottom-up analysis to an ontological theory
Creators: name: Poggi, Francesco <1982>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: INF/01 Informatica

description: This thesis aims at investigating a new approach to document analysis based on the idea of structural patterns in XML vocabularies. My work is founded on the belief that authors do naturally converge to a reasonable use of markup languages and that extreme, yet valid instances are rare and limited. Actual documents, therefore, may be used to derive classes of elements (patterns) persisting across documents and distilling the conceptualization of the documents and their components, and may give ground for automatic tools and services that rely on no background information (such as schemas) at all. 
The central part of my work consists in introducing from the ground up a formal theory of eight  structural patterns (with three sub-patterns) that are able to express the logical organization of any XML document, and verifying their identifiability in a number of different vocabularies. This model is characterized by and validated against three main dimensions: terseness (i.e. the ability to represent the structure of a document with a small number of objects and composition rules), coverage (i.e. the ability to capture any possible situation in any document) and expressiveness (i.e. the ability to make explicit the semantics of structures, relations and dependencies).
An algorithm for the automatic recognition of structural patterns is then presented, together with an evaluation of the results of a test performed on a set of more than 1100 documents from eight very different vocabularies. This language-independent analysis confirms the ability of patterns to capture and summarize the guidelines used by the authors in their everyday practice.
Finally, I present some systems that work directly on the pattern-based representation of documents. The ability of these tools to cover very different situations and contexts confirms the effectiveness of the model.
Selective entanglement breaking
Creators: name: Kinoshita, Yuma
name: Namiki, Ryo
name: Yamamoto, Takashi
name: Koashi, Masato
name: Imoto, Nobuyuki
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We discuss the cases where local decoherence selectively degrades one type of entanglement more than other types. A typical case is called state ordering change, in which two input states with different amounts of entanglement undergoes a local decoherence and the state with the larger entanglement results in an output state with less entanglement than the other output state. We are also interested in a special case where the state with the larger entanglement evolves to a separable state while the other output state is still entangled, which we call selective entanglement breaking. For three-level or larger systems, it is easy to find examples of the state ordering change and the selective entanglement breaking, but for two-level systems it is not trivial whether such situations exist. We present a new strategy to construct examples of two-qubit states exhibiting the selective entanglement breaking regardless of entanglement measure. We also give a more striking example of the selective entanglement breaking in which the less entangled input state has only an infinitesimal amount of entanglement.
description: 6 pages, 2 figures
On High Explosive Launching of Projectiles for Shock Physics Experiments
Creators: name: Swift, Damian C.
name: Forest, Charles A.
name: Clark, David A.
name: Buttler, William T.
name: Marr-Lyon, Mark
name: Rightley, Paul
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The hydrodynamic operation of the `Forest Flyer' type of explosive launching system for shock physics projectiles was investigated in detail using one- and two-dimensional continuum dynamics simulations. The simulations were insensitive to uncertainties in the material properties, and reproduced measurements of the projectile. The most commonly-used variant, with an Al alloy case, was predicted to produce a slightly curved projectile, subjected to some shock heating, and likely exhibiting some porosity from tensile damage. The flatness can be improved by using a case of lower shock impedance, such as polymethyl methacrylate. High-impedance cases, including Al alloys but with denser materials improving the launching efficiency, can be used if designed according to the physics of oblique shock reflection. The tensile stress induced in the projectile depends on the relative thickness of the explosive, expansion gap, and projectile. The thinner the projectile with respect to the explosive, the smaller the tensile stress. If the explosive is initiated with a plane wave lens, the tensile stress is lower than for initiation with multiple detonators over a plane. The previous plane wave lens designs did however induce a tensile stress close to the spall strength of the projectile. The tensile stress can be reduced by changes in the component thicknesses. Experiments to verify the operation of explosively-launched projectiles should attempt to measure porosity induced in the projectile: arrival time measurements may be insensitive to porous regions caused by damaged or recollected material.
The Ablowitz-Ladik Hierarchy Revisited
Creators: name: Gesztesy, Fritz
name: Holden, Helge
name: Michor, Johanna
name: Teschl, Gerald
Publisher: name: arXiv
Year: 2007
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We provide a detailed recursive construction of the Ablowitz-Ladik (AL) hierarchy and its zero-curvature formalism. The two-coefficient AL hierarchy under investigation can be considered a complexified version of the discrete nonlinear Schrödinger equation and its hierarchy of nonlinear evolution equations. Specifically, we discuss in detail the stationary Ablowitz-Ladik formalism in connection with the underlying hyperelliptic curve and the stationary Baker-Akhiezer function and separately the corresponding time-dependent Ablowitz-Ladik formalism.
description: 46 pages
HI constraints from the cross-correlation of eBOSS galaxies and Green Bank Telescope intensity maps
Creators: name: Wolz, Laura
name: Pourtsidou, Alkistis
name: Masui, Kiyoshi W.
name: Chang, Tzu-Ching
name: Bautista, Julian E.
name: Mueller, Eva-Maria
name: Avila, Santiago
name: Bacon, David
name: Percival, Will J.
name: Cunnington, Steven
name: Anderson, Chris
name: Chen, Xuelei
name: Kneib, Jean-Paul
name: Li, Yi-Chao
name: Liao, Yu-Wei
name: Pen, Ue-Li
name: Peterson, Jeffrey B.
name: Rossi, Graziano
name: Schneider, Donald P.
name: Yadav, Jaswant
name: Zhao, Gong-Bo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the joint analysis of Neutral Hydrogen (HI) Intensity Mapping observations with three galaxy samples: the Luminous Red Galaxy (LRG) and Emission Line Galaxy (ELG) samples from the eBOSS survey, and the WiggleZ Dark Energy Survey sample. The HI intensity maps are Green Bank Telescope observations of the redshifted 21cm emission on 100deg2 covering the redshift range $0.6
description: 18 pages, 19 figures, 1 table; accepted by MNRAS
Χρηματοδοτική μίσθωση ακινήτων:
Creators: name: Σαράντη, Κλεοπάτρα Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: χρηματοδοτική
μίσθωση
ακίνητα
Leasing
Sale and lease back
Real estate
3. ακίνητα
ΛΕΞΕΙΣ ΚΛΕΙΔΙΑ (ΑΓΓΛΙΚΑ)
1. Leasing
2. Sale and lease back
3. Real estate

description: Σκοπός της παρούσας εργασίας είναι να παρουσιαστεί ο θεσμός της χρηματοδοτικής μίσθωσης στο χώρο των ακίνητων. Στο πρώτο κεφάλαιο δίνεται ο ορισμός του leasing, γίνεται μια σύντομη ιστορική αναδρομή στην εξέλιξη του θεσμού, παρουσιάζεται το ισχύον θεσμικό πλαίσιο στην Ελλάδα, σύμφωνα με τις διατάξεις του Ν.1665/1986 που εισήγαγε τη χρηματοδοτική μίσθωση στην χώρα μας, ενώ αναλύονται και οι ειδικότερες μορφές με τις οποίες εμφανίζεται ο θεσμός στις συναλλαγές. Στο δεύτερο κεφάλαιο γίνεται αναφορά στη νομική φύση του leasing, στον τύπο, τη διάρκεια, το αντικείμενο και το λοιπό περιεχόμενο της σύμβασης, καθώς και στα συμβαλλόμενα μέρη και τις σχέσεις που αναπτύσσονται μεταξύ τους. Στο ίδιο κεφάλαιο εξετάζονται τα διάφορα στάδια της σύμβασης και τέλος αναλύονται οι λόγοι λήξης αυτής. Το τρίτο και τελευταίο κεφάλαιο είναι αφιερωμένο σε ειδικότερα ζητήματα που μπορούν να ανακύψουν κατά την εφαρμογή του θεσμού στο χώρο των ακινήτων, ενώ ακολουθεί ιδιαίτερη και εκτενής αναφορά στα πλεονεκτήματα και μειονεκτήματα του θεσμού και το φορολογικό καθεστώς αυτού.
description: The objective of the present thesis is to present the concept of financial leasing in the real estate field. In the first chapter, the concept of leasing is described, a brief historical reference of the financial leasing is presented, the standing institutional framework in Greece, according to the Law Ν. 1665/1986, which introduced the financial leasing to our country, is analysed, while the main forms of leasing are subscribed. In the second chapter, the legal nature, the form, the duration, the subject and the general content of the contract, the contracting parties and the relationship that develops between them are analysed. In the same chapter, the various stages of the contract are described and finally the reasons for the termination of the contract are analyzed. The third and final chapter of the present thesis is dedicated to the particular issues that may arise during the implementation of the institution in the real estate field, while specific and extensive reference is made to the advantages and disadvantages of the institution and the applicable tax regime
A ULX microquasar in NGC 5408?
Creators: name: Soria, Roberto
name: Fender, Rob
name: Hannikainen, Diana
name: Read, Andrew
name: Stevens, Ian
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We studied the radio source associated with the ultraluminous X-ray source in NGC 5408 (L_X ~ 10^{40} erg/s). The radio spectrum is steep (index ~ -1), consistent with optically-thin synchrotron emission, not with flat-spectrum core emission. Its flux density (~ 0.28 mJy at 4.8 GHz, at a distance of 4.8 Mpc) was the same in the March 2000 and December 2004 observations, suggesting steady emission rather than a transient outburst. However, it is orders of magnitude higher than expected from steady jets in stellar-mass microquasar. Based on its radio flux and spectral index, we suggest that the radio source is either an unusually bright supernova remnant, or, more likely, a radio lobe powered by a jet from the black hole. Moreover, there is speculative evidence that the source is marginally resolved with a radius ~ 30 pc. A faint HII region of similar size appears to coincide with the radio and X-ray sources, but its ionization mechanism remains unclear. Using a self-similar solution for the expansion of a jet-powered electron-positron plasma bubble, in the minimum-energy approximation, we show that the observed flux and (speculative) size are consistent with an average jet power ~ 7 x 10^{38} erg/s ~ 0.1 L_X ~ 0.1 L_{Edd}, an age ~ 10^5 yr, a current velocity of expansion ~ 80 km/s. We briefly discuss the importance of this source as a key to understand the balance between luminosity and jet power in accreting black holes.
description: 14 pages, accepted by MNRAS
On the nature of the hard X-ray source IGR J2018+4043
Creators: name: Bykov, A. M.
name: Krassilchtchikov, A. M.
name: Uvarov, Yu. A.
name: Kennea, J. A.
name: Pavlov, G. G.
name: Dubner, G. M.
name: Giacani, E. B.
name: Bloemen, H.
name: Hermsen, W.
name: Kaastra, J.
name: Lebrun, F.
name: Renaud, M.
name: Terrier, R.
name: DeBecker, M.
name: Rauw, G.
name: Swings, J. -P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We found a very likely counterpart to the recently discovered hard X-ray source IGR J2018+4043 in the multi-wavelength observations of the source field. The source, originally discovered in the 20-40 keV band, is now confidently detected also in the 40-80 keV band, with a flux of (1.4 +/- 0.4) x 10(-11) erg cm(-2) s(-1). A 5 ks Swift observation of the IGR J2018+4043 field revealed a hard point-like source with the observed 0.5-10 keV flux of 3.4(+0.7)(-0.8) x 10(-12) erg cm(-2) s(-1) (90% confidence level) at alpha = 20h18m38.55s, delta = +40d41m00.4s (with a 4.2" uncertainty). The combined Swift-INTEGRAL spectrum can be described by an absorbed power-law model with photon index gamma = 1.3 +/- 0.2 and N_H = 6.1(+3.2)(-2.2) x 10(22) cm(-2). In archival optical and infrared data we found a slightly extended and highly absorbed object at the Swift source position. There is also an extended VLA 1.4 GHz source peaked at a beam-width distance from the optical and X-ray positions. The observed morphology and multiwavelength spectra of IGR J2018+4043 are consistent with those expected for an obscured accreting object, i.e. an AGN or a Galactic X-ray binary. The identification suggests possible connection of IGR J2018+4043 to the bright gamma-ray source GEV J2020+4023 (3EG J2020+4017) detected by COS B and CGRO EGRET in the gamma-Cygni SNR field.
description: 5 pages, 3 figures, uses emulateapj style
Electron spin resonance investigation of Mn^{2+} ions and their dynamics in manganese doped SrTiO_3
Creators: name: Laguta, V. V.
name: Kondakova, I. V.
name: Bykov, I. P.
name: Glinchuk, M. D.
name: Vilarinho, P. M.
name: Tkach, A.
name: Jastrabik, L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Using electron spin resonance, lattice position and dynamic properties of Mn2+ ions were studied in 0.5 and 2 % manganese doped SrTiO3 ceramics prepared by conventional mixed oxide method. The measurements showed that Mn2+ ions substitute preferably up to 97 % for Sr if the ceramics is prepared with a deficit of Sr ions. Motional narrowing of the Mn2+ ESR spectrum was observed when temperature increases from 120 K to 240-250 K that was explained as a manifestation of off-center position of this ion at the Sr site. From the analysis of the ESR spectra the activation energy Ea = 86 mV and frequency factor 1/?0 ? (2-10)x10^(-14) 1/s for jumping of the impurity between symmetrical off-center positions were determined. Both values are in agreement with those derived previously from dielectric relaxation. This proves the origin of dielectric anomalies in SrTiO3:Mn as those produced by the reorientation dynamics of Mn2+ dipoles.
description: 16 pages, 6 figures
Orthogonality of fluxes in general nonlinear reaction networks
Creators: name: Renger, D. R. Michiel
name: Zimmer, Johannes
Publisher: name: Weierstrass Institute
Year: 2019
Subjects: subject: Chemical reactions
subject: reaction fluxes
subject: large deviations
subject: orthogonality
subject: 60J27
subject: 80A30
subject: 82C22
subject: 82C35

description: We consider the chemical reaction networks and study currents in these systems. Reviewing recent decomposition of rate functionals from large deviation theory for Markov processes, we adapt these results for reaction networks. In particular, we state a suitable generalisation of orthogonality of forces in these systems, and derive an inequality that bounds the free energy loss and Fisher information by the rate functional.
Quantum supremacy and hardness of estimating output probabilities of quantum circuits
Creators: name: Kondo, Yasuhiro
name: Mori, Ryuhei
name: Movassagh, Ramis
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Motivated by the recent experimental demonstrations of quantum supremacy, proving the hardness of the output of random quantum circuits is an imperative near term goal. We prove under the complexity theoretical assumption of the non-collapse of the polynomial hierarchy that approximating the output probabilities of random quantum circuits to within $\exp(-Ω(m\log m))$ additive error is hard for any classical computer, where $m$ is the number of gates in the quantum computation. More precisely, we show that the above problem is $\#\mathsf{P}$-hard under $\mathsf{BPP}^{\mathsf{NP}}$ reduction. In the recent experiments, the quantum circuit has $n$-qubits and the architecture is a two-dimensional grid of size $\sqrt{n}\times\sqrt{n}$. Indeed for constant depth circuits approximating the output probabilities to within $2^{-Ω(n\log{n})}$ is hard. For circuits of depth $\log{n}$ or $\sqrt{n}$ for which the anti-concentration property holds, approximating the output probabilities to within $2^{-Ω(n\log^2{n})}$ and $2^{-Ω(n^{3/2}\log n)}$ is hard respectively. We then show that the hardness results extend to any open neighborhood of an arbitrary (fixed) circuit including the trivial circuit with identity gates. We made an effort to find the best proofs and proved these results from first principles, which do not use the standard techniques such as the Berlekamp--Welch algorithm, the usual Paturi's lemma, and Rakhmanov's result.
description: 10 pages + References + short appendix. Has 2 figures. v3: New material added and changed the original title in v1 "Fine-Grained Analysis and Improved Robustness of Quantum Supremacy for Random Circuit Sampling"
Quantum nonlocality of four-qubit entangled states
Creators: name: Wu, Chunfeng
name: Yeo, Ye
name: Kwek, L. C.
name: Oh, C. H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum nonlocality of several four-qubit states is investigated by constructing a new Bell inequality. These include the Greenberger-Zeilinger-Horne (GHZ) state, W state, cluster state, and the state $|χ>$ that has been recently proposed in [PRL, {\bf 96}, 060502 (2006)]. The Bell inequality is optimally violated by $|χ>$ but not violated by the GHZ state. The cluster state also violates the Bell inequality though not optimally. The state $|χ>$ can thus be discriminated from the cluster state by using the inequality. Different aspects of four-partite entanglement are also studied by considering the usefulness of a family of four-qubit mixed states as resources for two-qubit teleportation. Our results generalize those in [PRL, {\bf 72}, 797 (1994)].
description: 13 pages, 1 figure