cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Laser-Assisted Semi Relativistic Excitation of Atomic Hydrogen by Electronic Impact
Creators: name: Taj, S.
name: Manaut, B.
name: Idrissi, M. El
name: Oufni, L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The excitation of H ($1s-2s$) by electron impact in the presence and in the absence of the laser field is studied in the framework of the first Born approximation. The angular variation of the laser-assisted differential cross section (DCS) for atomic hydrogen by electronic impact is presented at various kinetic energies for the incident electron. The use of Darwin wave function as a semirelativistic state to represent the atomic hydrogen gives interesting results when the condition $z/c\ll1$ is fulfilled. A comparison with the non relativistic theory and experimental data gives good agreement. It was observed that beyond (2700 $eV$) which represents the limit between the two approaches, the non relativistic theory does not yield close agreement with our theory and that, over certain ranges of energy, it can be in error by several orders of magnitude. The sum rule given by Bunkin and Fedorov and by Kroll and Watson \cite{22} has been verified in both nonrelativistic and relativistic regimes.
description: 15 pages, 10 figures. arXiv admin note: substantial text overlap with arXiv:1211.0483; and text overlap with arXiv:physics/9911033 by other authors without attribution
title: Προσομοίωση κατεργασίας αποφλοίωσης οδοντώσεων με φραιζάρισμα με κύλιση βασισμένη σε σύστημα CAD
Creators: name: Αργυρός Ηλίας
Publisher: name: Technical University of Crete
Year: 2010

description: Μη διαθέσιμο
A High Efficiency Architecture for Cascaded Raman Fiber Lasers
Creators: name: Supradeepa, V. R.
name: Nichsolson, Jeffrey W.
name: Headley, Clifford E.
name: Yan, Man F.
name: Palsdottir, Bera
name: Jakobsen, Dan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate a new high efficiency architecture for cascaded Raman fiber lasers based on a single pass cascaded amplifier configuration. Conversion is seeded at all intermediate Stokes wavelengths using a multi-wavelength seed source. A lower power Raman laser based on the conventional cascaded Raman resonator architecture provides a convenient seed source providing all the necessary wavelengths simultaneously. In this work we demonstrate a 1480nm laser pumped by an 1117nm Yb-doped fiber laser with maximum output power of 204W and conversion efficiency of 65% (quantum-limited efficiency is ~75%). We believe both the output power and conversion efficiency (relative to quantum-limited efficiency) are the highest reported for cascaded Raman fiber lasers.
description: 9 pages, 7 figures, replaced with an updated version
title: Ανάπτυξη αλγορίθμου για την επίλυση του προβλήματος p-μέσων (p-median) και p-κέντρων (p-center)
Creators: name: Παπαστεφάνου Ευάγγελος
Publisher: name: Technical University of Crete
Year: 2010

description: Μη διαθέσιμο
title: Προσομοίωση της διασποράς αέριων ρύπων λέβητα κεντρικής θέρμανσης γύρω από κτήρια του Πολυτεχνείου Κρήτης
Creators: name: Κιτσάκης Παναγιώτης
Publisher: name: Technical University of Crete
Year: 2010

description: Μη διαθέσιμο
ARA-residual power series method for solving partial fractional differential equations
Creators: name: Burqan, A.
name: Saadeh, R.
name: Qazza, A.
name: Momani, S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: In this article a new approach in solving time fractional partial differential equations is introduced, that is, the ARA-residual power series method. The main idea of this technique, depends on applying the ARA-transform and using Taylor's expansion to construct approximate series solutions. The procedure of getting the approximate solutions for nonlinear time fractional partial differential equations is a difficult mission, the ARA-residual power series method over comes this trouble throughout expressing the solution in a series form then obtain the series coefficients using the idea of the residual function and the concept of the limit at infinity. This method is efficient and applicable to solve a wide family of time fractional partial differential equations. Four attractive applications are considered to show the speed and the strength of the proposed method in constructing solitary series solutions of the target equations.
title: Gefäße aus Melamin-Formaldehyd-Harz wie „Coffee to go“ Becher aus „Bambusware“ können gesundheitlich bedenkliche Stoffe in heiße Lebensmittel abgeben: Stellungnahme Nr. 046/2019 des BfR vom 25. November 2019
Creators: name: Bundesinstitut Für Risikobewertung
Publisher: name: Bundesbehörden und Einrichtungen im Geschäftsbereich des Bundesministeriums für Ernährung und Landwirtschaft (BMEL)
Year: 2019
Subjects: subject: 000

description: BfR-Stellungnahmen, vol. 2019, no. 046
Vlasov-Klimontovich Equation in Action
Creators: name: Turski, Łukasz A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: This paper outlines a variety of possible applications of the Vlasov equation and its generalization, i.e., the Klimontovich equation, in various areas of many-body physics. In particular, these equations are shown to be used in relativistic plasma physics, the theory of semi-classical Bloch electrons, and the metriplectic description of dissipative processes.
description: This article belongs to the special issue of Acta Physica Polonica A printed in honor of Professor Iwo Bialynicki-Birula on the occasion of his 90th birthday (Ed. Tomasz Sowinski, DOI:10.12693/APhysPolA.143.S0)
title: Διερεύνηση ιδιοτήτων και αποτελεσματικότητας αλγορίθμων βελτιστοποίησης μη-γραμμικών προβλημάτων
Creators: name: Φούσας Γρηγόριος
Publisher: name: Technical University of Crete
Year: 2010

description: Μη διαθέσιμο
Water-assisted electron capture exceeds photorecombination in biological conditions
Creators: name: Molle, Axel
name: Zatsarinny, Oleg
name: Jagau, Thomas
name: Dubois, Alain
name: Sisourat, Nicolas
Publisher: name: arXiv
Year: 2023
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: A decade ago, an electron-attachment process called interatomic Coulombic electron capture has been predicted to be possible through energy transfer to a nearby neighbor. It has been estimated to be competitive with environment-independent photorecombination, but its general relevance has yet to be established. Here, we evaluate the capability of alkali and alkaline earth metal cations to capture a free electron by assistance from a nearby water molecule. We introduce a characteristic distance $r_{IC}$ for this energy transfer mechanism in equivalence to the Förster radius. Our results show that water-assisted electron capture dominates over photorecombination beyond the second hydration shell of each cation for electron energies above a threshold. The assisted capture reaches distances equivalent to a fifth to seventh solvation shell for the studied cations. The far reach of the assisted electron capture is of significant general interest to the broad spectrum of research fields dealing with low-energy electrons, in particular radiation-induced damage of biomolecules. The here introduced distance measure will enable quantification of the role of the environment for assisted electron attachment.
Intra-regular Abel-Grassmann's groupoids
Creators: name: Dudek, Wieslaw A.
name: Khan, Madad
name: Khan, Nasir
Publisher: name: arXiv
Year: 2013
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: We characterize intra-regular Abel-Grassmann's groupoids by the properties of their ideals and $(\in ,\in!\vee q_{k})$-fuzzy ideals of various types.
Additional file 1 of Identification of factors impairing exercise capacity after severe COVID-19 pulmonary infection: a 3-month follow-up of prospective COVulnerability cohort
Creators: name: Ribeiro Baptista, Bruno
name: d’Humières, Thomas
name: Schlemmer, Frédéric
name: Bendib, Inès
name: Justeau, Grégoire
name: Al-Assaad, Lara
name: Hachem, Mouna
name: Codiat, Rebecca
name: Bardel, Benjamin
name: Abou Chakra, Laure
name: Belmondo, Thibaut
name: Audureau, Etienne
name: Hue, Sophie
name: Mekontso-Dessap, Armand
name: Derumeaux, Geneviève
name: Boyer, Laurent
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Mental Health
subject: Virology

description: Additional file 1: Table S1. Univariate and multivariable analysis to identify the factors associated with VO2peak.
SPRING-IN ANGLE PREDICTION FOR THERMAL SHRINKAGE IN CROSS-PLY LAMINATE
Creators: name: Chinwicharnam, Kwanchai
Publisher: name: Purdue University Graduate School
Year: 2022
Subjects: Aerospace materials
Aerospace structures

description: Thermal shrinkage in advanced composite manufacturing causes residual stress in a cylindrical anisotropic segment. The residual stress later induces a spring-in angle when the temperature change is negative. The superposition method in the finite element method (FEM) by ABAQUS© proves that only the residual stress in the circumferential direction controls the spring-in angle and induces the radial residual stress. To predict the angle change, the residual stress is firstly determined by using the closed-loop geometry in FEM and then implemented into the cylindrical cross-ply symmetric laminate segment. Consequently, the geometry creates the spring-in angle under the traction-free surface. The angle change is in good agreement with the Radford equation and is found to depend on the coefficient of thermal expansion (CTE) in the circumferential and radial directions rather than other material properties and geometry dimensions. The study found a new limitation of the Radford equation, in that it is accurate when the part is anisotropic symmetric laminate, but not when it is unsymmetric. The accuracy of the Radford equation is further explored with the double curve geometry. Using the superposition method, the circumferential residual stress along the major curve is found to have an influence on the angle change not only of the major curve, but also of the minor curve. The negative temperature change produces the spring-in angle on the major curve, and both spring-in and -off angles on the minor curve, which rely on the radius ratio. In addition, the spring-in angle on the major curve is coincident with the Radford equation. In sum, knowing the spring-in angle is very helpful in designing a tool in advanced composite manufacturing, and the superposition method and the Radford equation are applicable to predict the spring-in angle.
Simulating Lattice Spin Models on Graphics Processing Units
Creators: name: Levy, Tal
name: Cohen, Guy
name: Rabani, Eran
Publisher: name: arXiv
Year: 2012
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Other Computer Science (cs.OH)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Lattice spin models are useful for studying critical phenomena and allow the extraction of equilibrium and dynamical properties. Simulations of such systems are usually based on Monte Carlo (MC) techniques, and the main difficulty is often the large computational effort needed when approaching critical points. In this work, it is shown how such simulations can be accelerated with the use of NVIDIA graphics processing units (GPUs) using the CUDA programming architecture. We have developed two different algorithms for lattice spin models, the first useful for equilibrium properties near a second-order phase transition point and the second for dynamical slowing down near a glass transition. The algorithms are based on parallel MC techniques, and speedups from 70- to 150-fold over conventional single-threaded computer codes are obtained using consumer-grade hardware.
Magnification effect of Kerr metric by configurations of collisionless particles in non-isotropic kinetic equilibria
Creators: name: Cremaschini, Claudio
name: Stuchlík, Zdeněk
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: A test fluid composed of relativistic collisionless neutral particles in the background of Kerr metric is expected to generate non-isotropic equilibrium configurations in which the corresponding stress-energy tensor exhibits pressure and temperature anisotropies. This arises as a consequence of the constraints placed on single-particle dynamics by Killing tensor symmetries, leading to a peculiar non-Maxwellian functional form of the kinetic distribution function describing the continuum system. Based on this outcome, in this paper the generation of Kerr-like metric by collisionless N-body systems of neutral matter orbiting in the field of a rotating black hole is reported. The result is obtained in the framework of covariant kinetic theory by solving the Einstein equations in terms of an analytical perturbative treatment whereby the gravitational field is decomposed as a prescribed background metric tensor described by the Kerr solution plus a self-field correction. The latter one is generated by the uncharged fluid at equilibrium and satisfies the linearized Einstein equations having the non-isotropic stress-energy tensor as source term. It is shown that the resulting self-metric is again of Kerr type, providing a mechanism of magnification of the background metric tensor and its qualitative features.
description: 13 pages. arXiv admin note: text overlap with arXiv:2306.10434
A zero-sum game between a singular stochastic controller and a discretionary stopper
Creators: name: Hernandez-Hernandez, Daniel
name: Simon, Robert S.
name: Zervos, Mihail
Publisher: name: arXiv
Year: 2012
Subjects: subject: Probability (math.PR)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: We consider a stochastic differential equation that is controlled by means of an additive finite-variation process. A singular stochastic controller, who is a minimizer, determines this finite-variation process, while a discretionary stopper, who is a maximizer, chooses a stopping time at which the game terminates. We consider two closely related games that are differentiated by whether the controller or the stopper has a first-move advantage. The games' performance indices involve a running payoff as well as a terminal payoff and penalize control effort expenditure. We derive a set of variational inequalities that can fully characterize the games' value functions as well as yield Markovian optimal strategies. In particular, we derive the explicit solutions to two special cases and we show that, in general, the games' value functions fail to be $C^1$. The nonuniqueness of the optimal strategy is an interesting feature of the game in which the controller has the first-move advantage.
description: Published in at http://dx.doi.org/10.1214/13-AAP986 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Energy Hub Gas : A Multi-Domain System Modelling and Co-Simulation Approach
Creators: name: Poppenborg, Rafael
name: Ruf, Johannes
name: Chlosta, Malte
name: Liu, Jianlei
name: Hotz, Christian
name: Düpmeier, Clemens
name: Kolb, Thomas
name: Hagenmeyer, Veit
Publisher: name: Association for Computing Machinery (ACM)
Year: 2021

description: Coping with the complexity of future energy grids and the rising challenges of the energy transition to more renewable energy sources (RES), an Energy Hub Gas (EHG) concept appears to be a promising approach. This concept combines various technical components to a sector-coupling system network to support the electricity grid with ancillary and balancing services to cope with the fluctuating generation by RES and to provide (renewable) energy carriers. Additionally, the EHG serves as regional gateway and as a converter for large, centralized RES-feed-in and aggregation/distribution hub of local RES-feed-in. For combining several separate models from different domains to an EHG system model, a co-simulation approach is used with high regard on flexibility concerning the modelling aspects as well as high modularity to easily adapt the concept to further use cases. As main results presented in the paper, the coherence of the extended EHG system model and its usability for implementation in co-simulation can be shown in first simulations.
Serializability, not Serial: Concurrency Control and Availability in Multi-Datacenter Datastores
Creators: name: Patterson, Stacy
name: Elmore, Aaron J.
name: Nawab, Faisal
name: Agrawal, Divyakant
name: Abbadi, Amr El
Publisher: name: arXiv
Year: 2012
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: We present a framework for concurrency control and availability in multi-datacenter datastores. While we consider Google's Megastore as our motivating example, we define general abstractions for key components, making our solution extensible to any system that satisfies the abstraction properties. We first develop and analyze a transaction management and replication protocol based on a straightforward implementation of the Paxos algorithm. Our investigation reveals that this protocol acts as a concurrency prevention mechanism rather than a concurrency control mechanism. We then propose an enhanced protocol called Paxos with Combination and Promotion (Paxos-CP) that provides true transaction concurrency while requiring the same per instance message complexity as the basic Paxos protocol. Finally, we compare the performance of Paxos and Paxos-CP in a multi-datacenter experimental study, and we demonstrate that Paxos-CP results in significantly fewer aborted transactions than basic Paxos.
description: VLDB2012
Ultrasensitive force detection with a nanotube mechanical resonator
Creators: name: Moser, J.
name: Guttinger, J.
name: Eichler, A.
name: Esplandiu, M. J.
name: Liu, D. E.
name: Dykman, M. I.
name: Bachtold, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Since the advent of atomic force microscopy, mechanical resonators have been used to study a wide variety of phenomena, such as the dynamics of individual electron spins, persistent currents in normal metal rings, and the Casimir force. Key to these experiments is the ability to measure weak forces. Here, we report on force sensing experiments with a sensitivity of 12 zN Hz^(-1/2) at a temperature of 1.2 K using a resonator made of a carbon nanotube. An ultra-sensitive method based on cross-correlated electrical noise measurements, in combination with parametric downconversion, is used to detect the low-amplitude vibrations of the nanotube induced by weak forces. The force sensitivity is quantified by applying a known capacitive force. This detection method also allows us to measure the Brownian vibrations of the nanotube down to cryogenic temperatures. Force sensing with nanotube resonators offers new opportunities for detecting and manipulating individual nuclear spins as well as for magnetometry measurements.
description: Early version. To be published in Nature Nanotechnology
title: Ανάπτυξη συστήματος διαχείρισης ασφάλειας τροφίμων (ΣΔΑΤ) με βάση το πρότυπο ISO 22000 σε βιομηχανία παραγωγής παστεριωμένων χυμών
Creators: name: Ρουσσης Δημητριος
Publisher: name: Technical University of Crete
Year: 2014

description: Η ασφάλεια των τροφίμων συνδέεται με την ύπαρξη βλαπτικών παραγόντων, των κινδύνων στα τρόφιμα. Επειδή η εισαγωγή των κινδύνων για την ασφάλεια τροφίμων μπορεί να παρουσιαστεί σε οποιοδήποτε στάδιο της αλυσίδας παραγωγής τους, είναι απαραίτητο να υπάρχει κατάλληλος έλεγχος στα στάδια αυτά. Η ασφάλεια τροφίμων διασφαλίζεται με τις συνδυασμένες προσπάθειες όλων των επιχειρήσεων (οργανισμών) της αλυσίδας τροφίμων.

Οι οργανισμοί της αλυσίδας τροφίμων, περιλαμβάνουν τις επιχειρήσεις που ασχολούνται με την παραγωγή ζωοτροφών, την πρωτογενή παραγωγή, τη μεταποίηση, τη μεταφορά, την αποθήκευση μέχρι τη λιανική πώληση και διάθεση των τροφίμων στον καταναλωτή. Στους οργανισμούς της αλυσίδας τροφίμων περιλαμβάνονται οι εταιρείες παροχής υπηρεσιών, οι υπεργολάβοι και οι προμηθευτές των ως άνω οργανισμών (εξοπλισμού, συσκευασίας, πρόσθετων, συστατικών, καθαριστικών κ.α.).

Το ISO 22000:2005 είναι ένα πρότυπο διαχείρισης ασφάλειας τροφίμων, το οποίο ήρθε να καλύψει την ανάγκη για ένα ενιαίο, διεθνές αναγνωρισμένο πρότυπο και να αντικαταστήσει το  παλαιότερο ελληνικό πρότυπο ΕΛΟΤ 1416. Το πρότυπο ISO 22000:2005 προδιαγράφει τις απαιτήσεις για ένα σύστημα διαχείρισης της ασφάλειας τροφίμων, που συνδυάζει τα παρακάτω κοινώς αποδεκτά βασικά συστατικά στοιχεία, ώστε να διασφαλίζεται η ασφάλεια τροφίμων σε όλη την έκταση της αλυσίδας τροφίμων μέχρι την κατανάλωση:
•	Αμοιβαία επικοινωνία στην αλυσίδα τροφίμων,
•	Συστημική διαχείριση,
•	Προαπαιτούμενα,
•	Αρχές HACCP.

Στόχος της παρούσας μελέτης είναι η ανάπτυξη Συστήματος Διαχείρισης Ασφάλειας Τροφίμων (ΣΔΑΤ) με βάση το πρότυπο ISO 22000:2005 σε βιομηχανία παραγωγής παστεριωμένων χυμών.

Το ΣΔΑΤ αποκτά πολύ μεγαλύτερη σημασία για τη συγκεκριμένη εταιρία που μελετάμε, αφού πριν δεν υπήρχε σχέδιο HACCP, ούτε κάποιο άλλο σύστημα διαχείρισης ασφάλειας και κατά συνέπεια οποιασδήποτε μορφής πιστοποίηση.

Για να μπορέσει να αναπτυχθεί ένα ΣΔΑΤ κατά ISO 22000 σε μια επιχείρηση επιτυχώς, υπάρχουν ορισμένα στάδια που πρέπει να ακολουθηθούν. Έτσι λοιπόν και στη συγκεκριμένη εταιρία τα στάδια είναι τα εξής:
•	Εντοπισμός κρίσιμων σημείων ελέγχου (Critical Control Points-CCPs) με την εκπόνηση μελέτης HACCP, δημιουργία συστήματος παρακολούθησης αυτών.
•	Κάλυψη των προαπαιτούμενων (Prerequisite Programs-PRPs) για την παραγωγή προϊόντων ασφαλών για τρόφιμα.
•	Καθορισμός προαπαιτούμενων προγραμμάτων (Operational Prerequisite Programs-OPRPs).
•	Επιλογή δεικτών ασφάλειας τροφίμων και καθιέρωση στόχων.
•	Ανάπτυξη και έγκριση τεκμηρίωσης ΣΔΑΤ (PRPs, μελέτη HACCP, OPRPs, διαδικασίες, οδηγίες εργασίας).
•	Εκπαίδευση ομάδας ασφάλειας τροφίμων.
•	Εκπαίδευση προσωπικού και εσωτερικών επιθεωρητών.
Polytropic representation of the kinetic pressure tensor of non-ideal magnetized fluids in equilibrium toroidal structures
Creators: name: Cremaschini, Claudio
name: Kovář, Jiří
name: Stuchlík, Zdeněk
name: Tessarotto, Massimo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Non-ideal fluids are generally subject to the occurrence of non-isotropic pressure tensors, whose determination is fundamental in order to characterize their dynamical and thermodynamical properties. This requires the implementation of theoretical frameworks provided by appropriate microscopic and statistical kinetic approaches in terms of which continuum fluid fields are obtained. In this paper the case of non-relativistic magnetized fluids forming equilibrium toroidal structures in external gravitational fields is considered. Analytical solutions for the kinetic distribution function are explicitly constructed, to be represented by a Chapman-Enskog expansion around a Maxwellian equilibrium. In this way, different physical mechanisms responsible for the generation of non-isotropic pressures are identified and proved to be associated with the kinetic constraints imposed on single and collective particle dynamics by phase-space symmetries and magnetic field. As a major outcome, the validity of a polytropic representation for the kinetic pressure tensors corresponding to each source of anisotropy is established, whereby directional pressures exhibit a specific power-law functional dependence on fluid density. The astrophysical relevance of the solution for the understanding of fluid plasma properties in accretion-disc environments is discussed.
description: 16 pages
title: Ενεργειακή επιθεώρηση ξενοδοχειακής μονάδας
Creators: name: Ζαπαντη Αναστασια
Publisher: name: Technical University of Crete
Year: 2014

description: Τα ξενοδοχεία είναι κτήρια με ιδιαίτερα  με ιδιαίτερα υψηλές ενεργειακές καταναλώσεις λόγω της συνεχούς λειτουργίας τους και του πλήθους των φορτίων τους. Η συγκεκριμένη διπλωματική εργασία έχει σκοπό την βελτίωση της ενεργειακής απόδοσης ενός ξενοδοχείου στην Κεφαλονιά. Αυτό επιτυγχάνεται με την μείωση των ενεργειακών λειτουργιών του σε συνδυασμό με την διατήρηση ή και βελτίωση της ποιότητας των παρεχόμενων ενεργειακών υπηρεσιών. Για τον σκοπό αυτό θα γίνει αναλυτική αποτύπωση των κτηριακών εγκαταστάσεων του ξενοδοχείου καθώς και υπολογισμός των ενεργειακών καταναλώσεων εστιάζοντας στις ενεργειακές υποδομές και στην λειτουργία του. Γίνεται προσομοίωση των κτιρίων με τη χρήση του προγράμματος Google sketch up και μέσω του λογισμικού Open studio. Στη συνέχεια, με τη χρήση του ενεργειακού προγράμματος Energy plus πραγματοποιείται η ενεργειακή ανάλυσή του και εξάγονται συμπεράσματα για την ενεργειακή του απόδοση. Τέλος, παρατίθενται προτάσεις για την ενεργειακή αναβάθμιση του κτιρίου, οι οποίες προσομοιώνονται μέσω των ίδιων προγραμμάτων και αξιολογείται η αποτελεσματικότητα των προτεινόμενων λύσεων. Μετά την ολοκλήρωση της η εργασία θα δοθεί στο ξενοδοχείο προκειμένου να χρησιμοποιηθεί για την βελτίωση των εγκαταστάσεων του.
Lorentz Connections and Gravitation
Creators: name: Pereira, J. G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The different roles played by Lorentz connections in general relativity and in teleparallel gravity are reviewed. Some of the consequences of this difference are discussed.
description: Lecture presented at the Sixth International School on Field Theory and Gravity, Petropolis, Brazil, 2012
Additional file 1 of A novel and efficient CD22 CAR-T therapy induced a robust antitumor effect in relapsed/refractory leukemia patients when combined with CD19 CAR-T treatment as a sequential therapy
Creators: name: Zhang, Yu
name: Li, Saisai
name: Wang, Ying
name: Lu, Yang
name: Xu, Yingxi
name: Rao, Qing
name: Wang, Huijun
name: Xing, Haiyan
name: Tian, Zheng
name: Tang, Kejing
name: Lv, Lulu
name: Wang, Min
name: Wang, Jianxiang
Publisher: name: figshare
Year: 2022
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Additional file 1. Additional methods.
Covariant formulation of spatially non-symmetric kinetic equilibria in magnetized astrophysical plasmas
Creators: name: Cremaschini, Claudio
name: Tessarotto, Massimo
name: Stuchlík, Zdeněk
Publisher: name: arXiv
Year: 2023
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Astrophysical plasmas in the surrounding of compact objects and subject to intense gravitational and electromagnetic fields are believed to give rise to relativistic regimes. Theoretical and observational evidence suggest that magnetized plasmas of this type are collisionless and can persist for long times (e.g., with respect to a distant observer, coordinate, time), while exhibiting geometrical structures characterized by the absence of well-defined spatial symmetries. In this paper the problem is posed whether such configurations can correspond to some kind of kinetic equilibrium. The issue is addressed from a theoretical perspective in the framework of a covariant Vlasov statistical description, which relies on the method of invariants. For this purpose, a systematic covariant variational formulation of gyrokinetic theory is developed, which holds without requiring any symmetry condition on the background fields. As a result, an asymptotic representation of the relativistic particle magnetic moment is obtained from its formal exact solution, in terms of a suitably-defined invariant series expansion parameter (perturbative representation). On such a basis it is shown that spatially non-symmetric kinetic equilibria can actually be determined, an example being provided by Gaussian-like distributions. As an application, the physical mechanisms related to the occurrence of a non-vanishing equilibrium fluid 4-flow are investigated.
description: 16 pages
Additional file 1 of A randomised controlled trial to investigate the clinical effectiveness and cost effectiveness of Mindfulness-Based Cognitive Therapy (MBCT) for depressed non-responders to Increasing Access to Psychological Therapies (IAPT) high-intensity therapies: study protocol
Creators: name: Barnhofer, Thorsten
name: Dunn, Barnaby D.
name: Strauss, Clara
name: Ruths, Florian
name: Barrett, Barbara
name: Ryan, Mary
name: Ladwa, Asha
name: Stafford, Frances
name: Fichera, Roberta
name: Baber, Hannah
name: McGuinness, Ailis
name: Metcalfe, Isabella
name: Harding, Delilah
name: Walker, Sarah
name: Ganguli, Poushali
name: Rhodes, Shelley
name: Young, Allan
name: Warren, Fiona
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 60506 Virology

description: Additional file 1. Consent form.
A new model for mixing by double-diffusive convection (semi-convection). II. The transport of heat and composition through layers
Creators: name: Wood, Toby S.
name: Garaud, Pascale
name: Stellmach, Stephan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Regions of stellar and planetary interiors that are unstable according to the Schwarzschild criterion, but stable according to the Ledoux criterion, are subject to a form of oscillatory double-diffusive (ODD) convection often called "semi-convection". In this series of papers, we use an extensive suite of three-dimensional (3D) numerical simulations to quantify the transport of heat and composition by ODD convection, and ultimately propose a new 1D prescription that can be used in stellar and planetary structure and evolution models. The first paper in this series demonstrated that under certain conditions ODD convection spontaneously transitions from an initially homogeneously turbulent state into a staircase of convective layers, which results in a substantial increase in the transport of heat and composition. Here, we present simulations of ODD convection in this layered regime, we describe the dynamical behavior of the layers, and we derive empirical scaling laws for the transport through layered convection.
description: 12 figures
Insertion professionnelle des enseignants issus de l’immigrant d’origine africaine : Santé Mental et défis
Creators: Ama chantal Kablan Epse Aka
Publisher: name: University of Alberta Library
Year: 2022

La recherche sur la santé mentale des enseignants immigrants de minorité visible durant leur insertion professionnelle se situe à l'étape embryonnaire au Canada, particulièrement en Alberta puisque ce champ est encore peu exploré par la communauté scientifique. Les différentes recherches s'attardent davantage au stade de la formation à l'enseignement alors que l'insertion professionnelle peut demeurer difficile pour ces enseignants. Ce projet de recherche présente, en partie, les résultats sur les trajectoires d'insertion professionnelle des nouveaux enseignants originaires de l’Afrique (NEOA) dans les écoles francophones de l'Alberta. Des entrevues semi-dirigées des récits d'expérience d'insertion professionnelle ont été réalisées auprès de 3 NEOA. L'analyse des données recueillies, en lien avec le cadre théorique du processus multidimensionnel de l'insertion professionnelle de Mukamurera, Martineau, Bouthiette et Ndoreraho (2013), montre que ces derniers ont mobilisé des stratégies d'insertion professionnelle (SIP) pour essayer de surmonter les difficultés rencontrées lors de ce parcours liées à l'accès à l'emploi, à l'affectation , aux conditions de la tâche, à la socialisation organisationnelle, à la professionnalité à l'insertion personnelle et psychologique. Cette recherche permet donc de présenter des SIP, mobilisés par des enseignants immigrants de minorité visible, pouvant faciliter leur insertion professionnelle dans les écoles francophones de l'Alberta.
title: Carbon dioxide (CO2) capture & utilization technologies
title: Τεχνολογίες δέσμευσης και μετατροπής διοξειδίου το άνθρακα (CO2)
Creators: name: Δημητριου Μαριος-Αλκινοος
Publisher: name: Technical University of Crete
Year: 2019

description: The impending depletion of fossil resources combined with their most visible environmental consequences has led mankind to seek new methods to meet its energy needs in the direction of sustainable development. The latter implies the development of advanced energy production and storage technologies, which will be based on inexhaustible resources while being economical and environmentally friendly. In this direction, capturing and converting CO2 emissions (the most important of greenhouse gases) into alcohols (methanol and ethanol) can make the greatest contribution to meeting energy needs and protecting the environment.
The present thesis examines the existing technologies for CO2 capture and conversion. The ways of producing and exploiting the derived fuels are presented. Particular emphasis is placed on the capture, storage and chemical conversion of carbon dioxide into methanol (CH3OH).
description: Η επικείμενη εξάντληση των ορυκτών πόρων σε συνδυασμό με τις ορατές πλέον περιβαλλοντικές τους συνέπειες, έχει οδηγήσει την ανθρωπότητα στην αναζήτηση νέων μεθόδων για να καλύψει τις ενεργειακές της ανάγκες προς την κατεύθυνση της αειφόρου ανάπτυξης. Το τελευταίο συνεπάγεται την ανάπτυξη προηγμένων τεχνολογιών παραγωγής/αποθήκευσης ενέργειας, οι οποίες θα βασίζονται σε ανεξάντλητους πόρους και παράλληλα θα είναι οικονομικές και φιλικές προς το περιβάλλον. Προς την κατεύθυνση αυτή, η δέσμευση και μετατροπή εκπομπών CO2 (το κατεξοχήν αέριο του θερμοκηπίου) σε αλκοόλες (μεθανόλη και αιθανόλη) δύναται να συμβάλλει τα μέγιστα στην κάλυψη των ενεργειακών αναγκών και στην προστασία του περιβάλλοντος.
Η παρούσα εργασία εξετάζει τις υπάρχουσες τεχνολογίες για την δέσμευση και μετατροπή CO2. Παρουσιάζονται οι τρόποι παραγωγής και εκμετάλλευσής του παράγωγου καυσίμου. Ιδιαίτερη έμφαση δίνεται στη δέσμευση, αποθήκευση και χημική μετατροπή του διοξειδίου του άνθρακα σε μεθανόλη (CH3OH).
Kinetic formulation of Tolman-Ehrenfest effect: Non-ideal fluids in Schwarzschild and Kerr space-times
Creators: name: Cremaschini, Claudio
name: Kovář, Jiří
name: Stuchlík, Zdeněk
name: Tessarotto, Massimo
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A review of the original thermodynamic formulation of the Tolman-Ehrenfest effect prescribing the temperature profile of uncharged fluid at thermal equilibrium forming stationary configurations in curved space-time is proposed. A statistical description based on relativistic kinetic theory is implemented. In this context the Tolman-Ehrenfest relation arises in the Schwarzschild space-time for collisionless uncharged particles at Maxwellian kinetic equilibrium. However, the result changes considerably when non-ideal fluids, i.e., non-Maxwellian distributions, are treated, whose statistical temperature becomes non-isotropic and gives rise to a tensor pressure. This is associated with phase-space anisotropies in the distribution function, occurring both for diagonal and non-diagonal metric tensors, exemplified by the Schwarzschild and Kerr metrics respectively. As a consequence, it is shown that for these systems it is not possible to define a Tolman-Ehrenfest relation in terms of an isotropic scalar temperature. Qualitative properties of the novel solution are discussed.
description: 7 pages. arXiv admin note: text overlap with arXiv:2306.10434
A curated set of mating-type assignment for the blast fungus (Magnaporthales)
Creators: name: Latorre, Sergio M.
name: Were, Vincent M.
name: Langer, Thorsten
name: Foster, Andrew J.
name: Win, Joe
name: Kamoun, Sophien
name: Talbot, Nicholas J.
name: Burbano, Hernán A.
Publisher: name: Zenodo
Year: 2022
Subjects: Magnaporthe oryzae
Mating type
Nomenclature

description: Conflicting mating type annotations are frequent in Magnaporthe (Syn. Pyricularia) oryzae literature. Here, we classify the mating types of 14 standard strains and 258 genome samples of Magnaporthe sp. based on the protein structure-based nomenclature of Turgeon & Yoder (2000). We hope that our dataset will help to reduce confusion about mating type nomenclature in Magnaporthales and will facilitate comparisons across studies.
Polytropic representation of non-isotropic kinetic pressure tensor for non-ideal plasma fluids in relativistic jets
Creators: name: Cremaschini, Claudio
Publisher: name: arXiv
Year: 2023
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Non-ideal fluids are likely to be affected by the occurrence of pressure anisotropy effects, whose understanding for relativistic systems requires knowledge of the energy-momentum tensor. In this paper the case of magnetized jet plasmas at equilibrium is considered, in which both microscopic velocities of constituent particles as well as the continuum fluid flow are treated as relativistic ones. A theoretical framework based on covariant statistical kinetic approach is implemented, which permits the proper treatment of single-particle and phase-space kinetic constraints and, ultimately, the calculation of the system continuum fluid fields associated with physical observables. A Gaussian-like solution for the kinetic distribution function (KDF) is constructed, in which the physical mechanism responsible for the generation of temperature anisotropy is identified with magnetic moment conservation. A Chapman-Enskog representation of the same KDF is then obtained in terms of expansion around an equilibrium isotropic Juttner distribution. This permits the analytical calculation of the fluid 4-flow and stress-energy tensor and the consequent proof that the corresponding kinetic pressure tensor is non-isotropic. As a notable result, the validity of a polytropic representation for the perturbative non-isotropic pressure contributions is established, whereby directional pressures exhibit specific power-law functional dependences on fluid density.
description: 20 pages
The progenitor of SN 2011ja: Clues from circumstellar interaction
Creators: name: Chakraborti, Sayan
name: Ray, Alak
name: Smith, Randall
name: Ryder, Stuart
name: Yadav, Naveen
name: Sutaria, Firoza
name: Dwarkadas, Vikram V.
name: Chandra, Poonam
name: Pooley, David
name: Roy, Rupak
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Massive stars, possibly red supergiants, which retain extended hydrogen envelopes until core collapse, produce Type II Plateau (IIP) supernovae. The ejecta from these explosions shock the circumstellar matter originating from the mass loss of the progenitor during the final phases of its life. This interaction accelerates particles to relativistic energies which then lose energy via synchrotron radiation in the shock-amplified magnetic fields and inverse Compton scattering against optical photons from the supernova. These processes produce different signatures in the radio and X-ray part of the electromagnetic spectrum. Observed together, they allow us to break the degeneracy between shock acceleration and magnetic field amplification. In this work we use X-rays observations from the Chandra and radio observations from the ATCA to study the relative importance of processes which accelerate particles and those which amplify magnetic fields in producing the non-thermal radiation from SN 2011ja. We use radio observations to constrain the explosion date. Multiple Chandra observations allow us to probe the history of variable mass loss from the progenitor. The ejecta expands into a low density bubble followed by interaction with a higher density wind from a red supergiant consistent with ZAMS mass greater than 16 solar masses. Our results suggest that a fraction of type IIP supernovae may interact with circumstellar media set up by non-steady winds.
description: 9 pages, 5 figures, updated
Higgs Mass from D-Terms: a Litmus Test
Creators: name: Cheung, Clifford
name: Roberts, Hannes L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We explore supersymmetric theories in which the Higgs mass is boosted by the non-decoupling D-terms of an extended $U(1)_X$ gauge symmetry, defined here to be a general linear combination of hypercharge, baryon number, and lepton number. Crucially, the gauge coupling, $g_X$, is bounded from below to accommodate the Higgs mass, while the quarks and leptons are required by gauge invariance to carry non-zero charge under $U(1)_X$. This induces an irreducible rate, $σ$BR, for $pp \rightarrow X \rightarrow \ell\ell$ relevant to existing and future resonance searches, and gives rise to higher dimension operators that are stringently constrained by precision electroweak measurements. Combined, these bounds define a maximally allowed region in the space of observables, ($σ$BR, $m_X$), outside of which is excluded by naturalness and experimental limits. If natural supersymmetry utilizes non-decoupling D-terms, then the associated $X$ boson can only be observed within this window, providing a model independent `litmus test' for this broad class of scenarios at the LHC. Comparing limits, we find that current LHC results only exclude regions in parameter space which were already disfavored by precision electroweak data.
description: 7 pages, 9 figures
Properties of relativistic star in 5-D Einstein-Gauss-Bonnet gravity
Creators: name: Bhattacharya, Soumik
name: Thirukkanesh, Suntharalingam
name: Sharma, Ranjan
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In recent years, there has been a growing interest in stellar modelling in the framework of Einstein-Gauss-Bonnet gravity. In this paper, for a relativistic star in static equilibrium, we invoke the $5$ dimensional Einstein-Gauss-Bonnet gravity and solve the system by assuming a matter distribution that admits a linear equation of state (EOS). We fix the model parameters by matching the interior solution to the exterior Boulware-Deser metric which facilitates physical analysis of the resultant configuration. We analyze the star's gross physical properties, which brings to attention the role of the Gauss-Bonnet coupling parameter $α$ in fine-tuning the values of the matter variables.
Automatic Partitioning of Database Applications
Creators: name: Cheung, Alvin
name: Arden, Owen
name: Madden, Samuel
name: Myers, Andrew C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: Database-backed applications are nearly ubiquitous in our daily lives. Applications that make many small accesses to the database create two challenges for developers: increased latency and wasted resources from numerous network round trips. A well-known technique to improve transactional database application performance is to convert part of the application into stored procedures that are executed on the database server. Unfortunately, this conversion is often difficult. In this paper we describe Pyxis, a system that takes database-backed applications and automatically partitions their code into two pieces, one of which is executed on the application server and the other on the database server. Pyxis profiles the application and server loads, statically analyzes the code's dependencies, and produces a partitioning that minimizes the number of control transfers as well as the amount of data sent during each transfer. Our experiments using TPC-C and TPC-W show that Pyxis is able to generate partitions with up to 3x reduction in latency and 1.7x improvement in throughput when compared to a traditional non-partitioned implementation and has comparable performance to that of a custom stored procedure implementation.
description: VLDB2012
Molecules with an Induced Dipole Moment in a Stochastic Electric Field
Creators: name: Band, Y. B.
name: Ben-Shimol, Y.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The mean-field dynamics of a molecule with an induced dipole moment (e.g., a homonuclear diatomic molecule) in a deterministic and a stochastic (fluctuating) electric field is solved to obtain the decoherence properties of the system. The average (over fluctuations) electric dipole moment and average angular momentum as a function of time for a Gaussian white noise electric field are determined via perturbative and nonperturbative solutions in the fluctuating field. In the perturbative solution, the components of the average electric dipole moment and the average angular momentum along the deterministic electric field direction do not decay to zero, despite fluctuations in all three components of the electric field. This is in contrast to the decay of the average over fluctuations of a magnetic moment in a stochastic magnetic field with a Gaussian white noise magnetic field in all three components. In the nonperturbative solution, the component of the average electric dipole moment and the average angular momentum in the deterministic electric field direction also decay to zero.
description: 7 pages, 9 figures. arXiv admin note: substantial text overlap with arXiv:1305.3501
Dirac Gauginos and the 125 GeV Higgs
Creators: name: Benakli, Karim
name: Goodsell, Mark D.
name: Staub, Florian
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the mass, production and branching ratios of a 125 GeV Higgs in models with Dirac gaugino masses. We give a discussion of naturalness, and describe how deviations from the Standard Model in the key Higgs search channels can be simply obtained. We then perform parameter scans using a SARAH package upgrade, which produces SPheno code that calculates all relevant quantities, including electroweak precision and flavour constraint data, to a level of accuracy previously impossible for this class of models. We study three different variations on the minimal Dirac gaugino extension of the (N)MSSM.
description: 32 pages, 9 figures