cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
SImplify: Safety Incident teaching via simulation
Creators: name: Chapman, Arabella
name: D'Souza, Amrita
name: Davies, Thomas Jacob
name: Apichaya  Amrapala
name: Orhan, Orhan
Publisher: name: F1000 Research Limited
Year: 2024

description: Background

Junior doctors who work on the frontline will inevitably be involved in patient safety incidents throughout their career. Learning from incidents is vital for patient safety and is included the Generic professional capabilities framework (General Medical Council, 2017). In our continued response to this and the Patient Safety Incident Response Framework (NHS England, 2022), we designed a pilot course of bespoke simulation sessions for our junior doctors aiming to promote a positive culture of learning from patient safety incidents, and to improve knowledge around common Patient Safety issues. 



Summary of Work

We ran pilot voluntary 1-hour simulation sessions for all junior doctors, which were based on learning points from Patient Safety Investigations. Each session focussed on specific learning from a variety of incidents. Prior to the session all candidates completed a questionnaire made up of Constructive Response Questions (CRQ) to assess baseline knowledge. They then took part in the simulation session, including a debrief and a post simulation information pack with relevant trust or national guidelines. The learning objectives focussed on reducing knowledge gaps, exploring human factors and supporting learner’s participation in incident investigation and reporting. All candidates then completed the same CRQ questionnaire post simulation session to assess immediate improvements. 



Summary of Results

The sessions were inclusive to doctors both in training and in non-training posts. Seniority ranged from foundation year 2 to medical registrar, with the mean pre-session score being 78.17% and mean post session score being 92.26%. Average knowledge on common Patient Safety topics therefore improved by a mean of 14.09% after the simulation session intervention.  



Discussion and Conclusion

In our pilot, we have shown improvements in junior doctor knowledge around common Patient Safety Issues through the use of simulation training. We will now roll out monthly sessions using this format and in future cycles will amend the questionnaire to include enjoyment of the session, to assess whether this format provides a positive learning environment.   



Take Home Message

Simulation teaching improves knowledge around common patient safety themes in junior doctors.



References:

General Medical Council (2017). Generic professional capabilities framework. General Medical

Council. Generic professional capabilities framework the essential generic capabilities needed for

safe, effective and high quality medical care in the UK GMC (gmc uk.org)



NHS England (2022). Patient Safety Incident Response Framework and supporting guidance. NHS

England. NHS England » Patient Safety Incident Response Framework and supporting guidance
Οι Μακεδονικοί τάφοι του Δίου:
Creators: name: Τσιάφης, Δημήτριος Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Μακεδονικοί τάφοι
Δίον
Νεκροταφεία
Ελληνιστική αρχιτεκτονική Μακεδονία
Αρχιτεκτονική ταφικά μνημεία
Macedonian tombs
Dion
Cemeteries
Hellenistic architecture Macedonia Greece
Architecture sepulchral monuments

description: Θέμα της παρούσας εργασίας η εικόνα του προρωμαϊκού Δίου, οι Μακεδονικοί τάφοι και τα ευρήματά τους, και συζητώνται θέματα τυπολογίας των μακεδονικών τάφων και κριτήρια χρονολόγησή τους.
description: The subject of the present paper is The Macedonian tombs of Dion. The preroman Dions is briefly presented, then Macedonian tombs and their findigs are analytically presented. There is also a furhter elaboration on some issues of the typology and the criteria of the chronology of the macedonian tombs. Additionally a specific chronology of the Macedonian Tombs of Dion is proposed
Failure patterns caused by localized rise in pore-fluid overpressure and effective strength of rocks
Creators: name: Rozhko, Alexander
name: Podladchikov, Yuri
name: Renard, François
Publisher: name: arXiv
Year: 2008
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: In order to better understand the interaction between pore-fluid overpressure and failure patterns in rocks we consider a porous elasto-plastic medium in which a laterally localized overpressure line source is imposed at depth below the free surface. We solve numerically the fluid filtration equation coupled to the gravitational force balance and poro-elasto-plastic rheology equations. Systematic numerical simulations, varying initial stress, intrinsic material properties and geometry, show the existence of five distinct failure patterns caused by either shear banding or tensile fracturing. The value of the critical pore-fluid overpressure at the onset of failure is derived from an analytical solution that is in excellent agreement with numerical simulations. Finally, we construct a phase-diagram that predicts the domains of the different failure patterns and at the onset of failure.
Coefficient of restitution: Derivation of Newtonś Experimental Law from general energy considerations
Creators: name: Marchewka, Avi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences
subject: J.2
subject: 97I40

description: In order to describe the velocity of two bodies after they collide, Newton developed a phenomenological equation known as "Newton\' s Experimental Law" (NEL). In this way, he was able to practically bypass the complication involving the details of the force that occurs during the collision of the two bodies. Today, we use NEL together with momentum conservation to predict each bodyś velocity after collision. This, indeed, avoids the complication of knowing the forces involved in the collision, making NEL very useful. Whereas in Newtonś days the quantity of kinetic energy was not known, today it is a basic quantity that is in use. In this paper we will use the loss (or gain) of kinetic energy in a collision to show how NEL can be derived.
description: 14 pages, 4 figures
Effect of acceleration and escape of energetic particles on spectral steepening at shocks
Creators: name: Fraschetti, Federico
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Energetic particles spectra at interplanetary shocks often exhibit a power law within a narrow momentum range softening at higher energy. We introduce a transport equation accounting for particle acceleration and escape with diffusion contributed by self-generated turbulence close to the shock and by pre-existing turbulence far upstream. The upstream particle intensity steepens within one diffusion length from the shock as compared with diffusive shock acceleration rollover. The momentum spectrum, controlled by macroscopic parameters such as shock compression, speed, far upstream diffusion coefficient and escape time at the shock, can be reduced to a log-parabola and also to a broken power law. In the case of upstream uniform diffusion coefficient, the largely used power law/exponential cut off solution is retrieved.
description: 19 pages, 6 figures, accepted for publication in The Astrophysical Journal
Το νέο άρθρο 16α του Ν. 2190/1920 (όπως τροποποιήθηκε με το Ν.3604/2007):
Creators: name: Νικητίδου, Νικολέτα Χρυσόστομου
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Αρθρο 16α
ν.2190/1920
Οδηγία 68/2006
Δάνεια
Εγγυήσεις
Προκαταβολές
Ανώνυμη εταιρία
Μετοχές
Article 16a
Law 2190/1920
Directive 68/2006
s.a.
Loans
Advances
Quarantees
Financial assistance
Shares

description: Το νέο άρθρο 16α του ν. 2190/1920 όπως τροποποιήθηκε με τον ν. 3604/2007 (παροχή εγγυήσεων, δανείων και προκαταβολών από την α.ε. σε 3ους για να αποκτήσουν μετοχές της)Η 2η κοινοτική οδηγία και η μεταφορά της στο ελληνικό δίκαιο Η οδηγία 68/2006, η τροποποίηση της 2ης κοινοτικής οδηγίας και η ενσωμάτωσή της στον 2190/1920. Σκοπός της 68/2006 και του ελληνικού άρθρου 16α. Έννοια εγγυήσεων, προκαταβολών και δανείων. οι προϋποθέσεις της $1 υπό τις οποίες είανι δυνατή η χρηματοδότηση τρίτων από την α.ε. ( εύλογοι όροι αγοράς, έκθεση ΔΣ, απόφαση ΓΣ κλπ) 16α$2- Εφαρμογή της $1 στις θυγατρικές εταιρίες και στις ο.ε. και ε.ε. στις οποίες η α.ε. είναι μέλος. $3- Τι ισχύει όταν συμβαλλόμενος εινι μέλος του ΔΣ, η μητρική εταιρία κλπ. $4 - Εξαιρέσεςι από την $1 (πιστωτικά ιδρύματα και προσωπικό της εταιρίας)
description: The new article 16a of the 2190/1920 greek law ( financial assistance: advances, loans and quarantees by the s.a. to third parties in view of the acquisition of its shares). The council directives 77/91 and 68/2006, their goal and their tranfer to the greek law. Significance of the terms advances, loans and quarantees. 16a$1 Conditions under which financial assistance grom the s.a. is permitted 16a$2: Application of $1 to daughter companies etc 16a$3: financial assistance to members of the admnistrative directive etc. 16a$4:exceptions from $1
Influence of time, temperature, confining pressure and fluid content on the experimental compaction of spherical grains
Creators: name: Rossi, Magali
name: Vidal, Olivier
name: Wunder, Bernd
name: Renard, François
Publisher: name: arXiv
Year: 2008
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Theoretical models of compaction processes, such as for example intergranular pressure-solution (IPS), focus on deformation occurring at the contacts between spherical grains that constitute an aggregate. In order to investigate the applicability of such models, and to quantify the deformation of particles within an aggregate, isostatic experiments were performed in cold-sealed vessels on glass sphere aggregates at 200 MPa confining pressure and 350 degrees C with varying amounts of fluid.
Minutes of annual meeting of the Winfield and Okanagan Centre Irrigation District, May 14, 1943
Creators: name: , Winfield
Publisher: name: The University of British Columbia
Year: 2017

description: Minutes of annual meeting of the Winfield and Okanagan Centre Irrigation District, dated May 14, 1943, regarding the level of Beaver Lake, the Secretary's appointment, and the Calgary Line.
Resolvent analysis of stratification effects on wall-bounded shear flows
Creators: name: Ahmed, M. A.
name: Bae, H. J.
name: Thompson, A. F.
name: McKeon, B. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The interaction between shear driven turbulence and stratification is a key process in a wide array of geophysical flows with spatio-temporal scales that span many orders of magnitude. A quick numerical model prediction based on external parameters of stratified boundary layers could greatly benefit the understanding of the interaction between velocity and scalar flux at varying scales. For these reasons, here, we use the resolvent framework to investigate the effects of an active scalar on incompressible wall-bounded turbulence. We obtain the state of the flow system by applying the linear resolvent operator to the nonlinear terms in the governing Navier-Stokes equations with the Boussinesq approximation. This extends the formulation to include the scalar advection equation with the scalar component acting in the wall-normal direction in the momentum equations. We use the mean velocity profiles from a DNS of a stably-stratified turbulent channel flow at varying friction Richardson number. The results obtained from the resolvent analysis are compared to the premultiplied energy spectra, auto-correlation coefficient, and the energy budget terms obtained from the DNS. It is shown that despite using only a very limited range of representative scales, the resolvent model is able to reproduce the balance of energy budget terms as well as provide meaningful insight of coherent structures occurring in the flow. Computation of the leading resolvent models, despite considering a limited range of scales, reproduces the balance of energy budget terms, provides meaningful predictions of coherent structures in the flow, and is more cost-effective than performing full-scale simulations. This quick model can provide further understanding of stratified flows with only information about the mean profile and prior knowledge of energetic scales of motion in the neutrally-buoyant boundary layers.
Hermeneutik des Dritten Auges am Beispiel von Abendmahlsdeutungen in verschiedenen Kontexten der Welt
Creators: name: Lienemann-Perrin, Christine
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 52 Nr. 2 (2003): Ökumenische Rundschau, Band 52, Heft 2
Επιχειρηματικά σχέδια νεοσύστατης τεχνικής εταιρίας:
Creators: name: Ιωαννίδης, Γεώργιος Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Επιχειρηματικά σχέδια
Νεοσύστατη
Τεχνική εταιρία
Business plan
Construction company

description: Τα Επιχειρηματικά Σχέδια αφορούν επιχειρηματίες που είναι στα προγραμματικά στάδια της ενάρξεως ή της αποκτήσεως μιας επιχείρησης, αλλά και εκείνους που δημιούργησαν μια επιχείρηση χωρίς μελέτη σκοπιμότητας. Η δημιουργία ενός Επιχειρηματικού Σχεδίου είναι ένα σημαντικό εργαλείο για τη βελτίωση της απόδοσης κάθε επιχείρησης και συμβάλλει στη δομή και οργάνωση της επιχείρησης, στη λήψη αποφάσεων με βάση τους στόχους και την πολιτική αυτής, την καταγραφή, ανάλυση και κατανόηση της αγοράς, των καταναλωτών και του ανταγωνισμού και καταδεικνύει την επίτευξη ή μη των στόχων της. Επίσης, το Επιχειρηματικό Σχέδιο αντανακλά τις ιδέες και τις επιδιώξεις της επιχείρησης, ώστε οι πιθανοί επενδυτές να σχηματίσουν άποψη για το πόσο καλή είναι η προτεινόμενη επιχειρηματική ιδέα και για την ικανότητα της διοίκησης να την εκμεταλλευτεί και να την υλοποιήσει αποτελεσματικά. Σε γενικές γραμμές, το Επιχειρηματικό Σχέδιο χρησιμεύει ως εγχειρίδιο για την επιχείρηση και ως σημείο αναφοράς για πιθανούς επενδυτές και τη διοίκηση. Πολλοί επιχειρηματίες υποεκτιμούν την σπουδαιότητα της εκπόνησης του επιχειρηματικού σχεδίου. Υποεκτιμούν το πόσο πολύ μπορεί να βοηθήσει ένα καλό επιχειρηματικό σχέδιο μια νέα επιχείρηση να αρχίσει ή να επεκταθεί, να σχεδιάσει για το μέλλον και γενικά να προοδεύσει. Στα κεφάλαια που ακολουθούν δίδεται το επιχειρηματικό σχέδιο μιας νέας κατασκευαστικής εταιρίας προκειμένου να φανεί η χρησιμότητα αυτού του σχεδίου γενικά και ειδικότερα στη περίπτωση μας.
description: Business Plans concern to entrepreneurs that are in the early stages of beginning or acquisition of enterprise, but also those that created a enterprise without a feasibility study. The development of Business Plans is an important tool for the improvement of attribution of each enterprise and contributes in the structure and organisation of enterprise, in the decision-making having as foundation the objectives and the policy of it, the recording, the analysis and comprehension of market, the consumers and competition and shows the achievement or not of its objectives. Also, the Business Plan reflects the ideas and the objectives of the venture, in order the investors, to shape a positive opinion for the proposed enterprising idea and for the faculty of administration to exploit it and to materialise it effectively. In general terms, the Business Plan is useful as handbook for the enterprise and as reference for investors and the administration of the company. Many entrepreneurs underestimate the importance of Business Plans. They underestimate the level, that a well structured Business Plan helps a new enterprise to begin or to extend, to plan the future and in general to develop. In the following chapters the Business Plan of a new construction company is given in order to show the usefulness of it in general and more specifically for our case.
From preservice teacher to emerging professional: constructing conceptualizations of teaching in a culturally diverse society
Creators: name: Wong, Nellie Susan
Publisher: name: University of British Columbia
Year: 2009

description: At a time when schools are becoming increasingly diverse in composition, this study explored five student teachers' perspectives on the changing role of teachers in a multicultural society. By using a constructivist framework and qualitative methodologies, interviews were conducted with student teachers in a Canadian elementary teacher education program. Two data sets consisting of one-on-one interviews were collected. The first set was collected after students had completed a thirteen week practicum. The second set was conducted after the student teachers had completed program requirements and had graduated from university with an education degree. Students' conceptualizations of the teacher's role in culturally diverse classrooms are described in six categories: bridging gaps in knowledge; being proactive as a role model; nurturing self-esteem and personal pride in heritage; focusing on care, respect, and acceptance; creating a safe and inclusive environment; resisting the lure of assimilation and the status quo. Life experiences which were influential in the formation of the students' conceptualizations are also described and organized by theme. The results of the study demonstrate that conceptualizations traversed a range of philosophical arguments outlined by theorists, and students' beliefs reflect key elements of conceptions portrayed in the approaches used to meet the needs of culturally diverse classrooms described in the literature. The findings underscore the need for multicultural theory in teacher education and for a pedagogical approach which encourages students to become reflective practitioners who are able to examine and critique personal beliefs in relation to the evolving needs of a multicultural society.
MPEC 2024-T202 : 2024 TP6
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 TP6

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Flavor Democracy in Particle Physics
Creators: name: Sultansoy, Saleh
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The flavor democracy hypothesis was introduced in seventies taking in mind three Standard Model (SM) families. Later, this idea was disfavored by the large value of the t-quark mass. In nineties the hypothesis was revisited assuming that extra SM families exist. According to flavor democracy the fourth SM family should exist and there are serious arguments disfavoring the fifth SM family. The fourth SM family quarks lead to essential enhancement of the Higgs boson production cross-section at hadron colliders and the Tevatron can discover the Higgs boson before the LHC, if it mass is between 140 and 200 GeV. Then, one can handle "massless" Dirac neutrinos without see-saw mechanism. Concerning BSM physics, flavor democracy leads to several consequences: tan(beta) approx.eq. 40 if there are three MSSM families; super-partner of the right-handed neutrino can be the LSP; relatively light E(6)-inspired isosinglet quark etc. Finally, flavor democracy may give opportunity to handle "massless" composite objects within preonic models.
description: Invited presentation at the Sixth International Conference of the Balkan Physical Union (BPU-6), August 22-26, 2006, Istanbul, Turkey
Neural Network-Based Ranging with LTE Channel Impulse Response for Localization in Indoor Environments
Creators: name: Lee, Halim
name: Abdallah, Ali A.
name: Park, Jongmin
name: Seo, Jiwon
name: Kassas, Zaher M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: A neural network (NN)-based approach for indoor localization via cellular long-term evolution (LTE) signals is proposed. The approach estimates, from the channel impulse response (CIR), the range between an LTE eNodeB and a receiver. A software-defined radio (SDR) extracts the CIR, which is fed to a long short-term memory model (LSTM) recurrent neural network (RNN) to estimate the range. Experimental results are presented comparing the proposed approach against a baseline RNN without LSTM. The results show a receiver navigating for 100 m in an indoor environment, while receiving signals from one LTE eNodeB. The ranging root-mean squared error (RMSE) and ranging maximum error along the receiver's trajectory were reduced from 13.11 m and 55.68 m, respectively, in the baseline RNN to 9.02 m and 27.40 m, respectively, with the proposed RNN-LSTM.
description: Submitted to ICCAS 2020
Ortho-para transition in molecular hydrogen
Creators: name: Pachucki, Krzysztof
name: Komasa, Jacek
Publisher: name: arXiv
Year: 2008
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The radiative ortho-para transition in the molecular hydrogen is studied. This highly forbidden transition is very sensitive to relativistic and subtle nonadiabatic effects. Our result for the transition rate in the ground vibrational level $Γ(J=1\to J=0) = 6.20(62)\cdot 10^{-14} \iyr$ is significantly lower in comparison to all the previous approximate calculations. Experimental detection of such a weak line by observation of, for example, the cold interstellar molecular hydrogen is at present unlikely.
description: 4 pages, submitted to Phys. Rev. A
Solid-state Tube Wakefield Accelerator using Surface Waves in Crystals
Creators: name: Sahai, Aakash A.
name: Tajima, Toshiki
name: Taborek, Peter
name: Shiltsev, Vladimir D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Solid-state or crystal acceleration has for long been regarded as an attractive frontier in advanced particle acceleration. However, experimental investigations of solid-state acceleration mechanisms which offer $\rm TVm^{-1}$ acceleration gradients have been hampered by several technological constraints. The primary constraint has been the unavailability of attosecond particle or photon sources suitable for excitation of collective modes in bulk crystals. Secondly, there are significant difficulties with direct high-intensity irradiation of bulk solids, such as beam instabilities due to crystal imperfections and collisions etc. In this work, we model an experimentally practicable solid-state acceleration mechanism using collective electron oscillations in crystals that sustain propagating surface waves. These surface waves are driven in the wake of a submicron long particle beam in tube shaped nanostructured crystals with tube wall densities, $n_{\rm tube}\sim10^{22-24}\rm cm^{-3}$. Particle-In-Cell (PIC) simulations carried out under experimental constraints demonstrate the possibility of accessing average acceleration gradients of several $\rm TVm^{-1}$ using the solid-state tube wakefield acceleration regime. Furthermore, our modeling demonstrates the possibility that as the surface oscillations and resultantly the surface wave transitions into a nonlinear or "crunch-in" regime under $n_{\rm beam}/n_{\rm tube} \gtrsim 0.05$, not only does the average gradient increase but strong transverse focusing fields extend down to the tube axis. This work thus demonstrates the near-term experimental realizability of Solid-State Tube Wakefield Accelerator (SOTWA). (truncated to comply with submission requirements)
description: based upon long-standing work on the surface crunch-in mode of A. A. Sahai published in https://doi.org/10.1103/PhysRevAccelBeams.20.081004, arXiv:1610.03289 and http://doi.org/10.18429/JACoW-IPAC2015-WEPJE001
Knowledge needs for management: example of the program SEAMONTI runned by the Marine natural park of Cap Corse and Agriate
Creators: name: Marticorena, Julien
Publisher: name: Zenodo
Year: 2023
Subjects: deep-sea exploration
ecology
seamount
habitat mapping
AUV
Bathymetry
Corsica
Mediterranean sea
Benthic communities

description: Main results of the SEAMONTI project, dedicated to the exploration of a deep seamount in the Mediterranean sea, within the Marine Natural Park of Corsica Cap and Agriate. Two cruises have been conducted with an Autonomous Underwater Vehicle for bathymetry and sonar acquisitionand and secondary, a Remotely Operated Vehicle was used to acquire high resolution videos of the seafloor. We obtained a general map of deep-sea habitats on the seamount and assess the biodiversity distribution.
Constraints on the anomalous tensor operators from B\toϕK^{\ast}, ηK^{\ast}$ and ηK decays
Creators: name: Chang, Qin
name: Li, Xin-Qiang
name: Yang, Ya-Dong
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate whether the anomalous tensor operators with the Lorentz structure $σ_{μν} (1+γ_{5})\otimes σ^{μν}(1+γ_{5})$, which could provide a simple resolution to the polarization anomaly observed in $B\to ϕK^{\ast}$ decays, could also provide a coherent resolution to the large ${\cal B}(B\to ηK^{\ast})$ and survive bounds from $B\toηK$ decays. Parameter spaces satisfying all these experimental data are obtained, and found to be dominated by the color-octet tensor operator contribution. Constraints for the equivalent solution with $(1+γ_{5})\otimes(1+γ_{5})$ operators are also derived and found to be dominated by the color-singlet one. With the constrained parameter spaces, we finally give predictions for $B_{s}\to ϕϕ$ decay, which could be tested at the Fermilab Tevatron and the LHC-b experiments.
description: 27 pages, 5 tables and 6 figures. Journal version
Dzyaloshinskii-Moriya interaction induced by an ultrashort electromagnetic pulse: Application to coherent (anti)ferromagnetic skyrmion nucleation
Creators: name: Desplat, L.
name: Meyer, S.
name: Bouaziz, J.
name: Buhl, P. M.
name: Lounis, S.
name: Dupé, B.
name: Hervieux, P. -A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We show how a Dzyaloshinskii-Moriya interaction can be generated in an ultrathin metal film from the induced internal electric field created by an ultrashort electromagnetic pulse. This interaction does not require structural inversion-symmetry breaking, and its amplitude can be tuned depending on the amplitude of the field. We perform first-principles calculations to estimate the strength of the field-induced magnetoelectric coupling for ferromagnetic Fe, Co, and Ni, and antiferromagnetic Mn, as well as FePt alloys. Last, using atomistic simulations, we demonstrate how an isolated antiferromagnetic skyrmion can be coherently nucleated from the collinear background by an ultrashort pulse in electric field on a 100-fs timescale.
description: 5 pages, 4 figures
Rhombohedral calcite precipitation from CO2-H2O-Ca(OH)2 slurry under supercritical and gas CO2 media
Creators: name: Montes-Hernandez, German
name: Renard, François
name: Geoffroy, Nicolas
name: Charlet, Laurent
name: Pironon, Jacques
Publisher: name: arXiv
Year: 2008
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: The formation of solid calcium carbonate (CaCO3) from aqueous solutions or slurries containing calcium and carbon dioxide (CO2) is a complex process of considerable importance in the ecological, geochemical and biological areas. Moreover, the demand for powdered CaCO3 has increased considerably recently in various fields of industry. The aim of this study was therefore to synthesize fine particles of calcite with controlled morphology by hydrothermal carbonation of calcium hydroxide at high CO2 pressure (initial PCO2=55 bar) and at moderate and high temperature (30 and 90 degrees C). The morphology of precipitated particles was identified by transmission electron microscopy (TEM/EDS) and scanning electron microscopy (SEM/EDS). In addition, an X-ray diffraction analysis was performed to investigate the carbonation efficiency and purity of the solid product. Carbonation of dispersed calcium hydroxide in the presence of supercritical (PT=90 bar, T=90 degrees C) or gaseous (PT=55 bar, T=30 degrees C) CO2 led to the precipitation of sub-micrometric isolated particles (<1$μ$m) and micrometric agglomerates (<5$μ$m) of calcite. For this study, the carbonation efficiency (Ca(OH)2-CaCO3 conversion) was not significantly affected by PT conditions after 24 h of reaction. In contrast, the initial rate of calcium carbonate precipitation increased from 4.3 mol/h in the "90bar-90 degrees C" system to 15.9 mol/h in the "55bar-30 degrees C" system. The use of high CO2 pressure may therefore be desirable for increasing the production rate of CaCO3, carbonation efficiency and purity, to approximately 48 kg/m3h, 95% and 96.3%, respectively in this study. The dissipated heat for this exothermic reaction was estimated by calorimetry to be -32 kJ/mol in the "90bar-90 degrees C" system and -42 kJ/mol in the "55bar-30 degrees C" system.
A Preliminary Study of Machine-Learning-Based Ranging with LTE Channel Impulse Response in Multipath Environment
Creators: name: Lee, Halim
name: Seo, Jiwon
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Alternative navigation technology to global navigation satellite systems (GNSSs) is required for unmanned ground vehicles (UGVs) in multipath environments (such as urban areas). In urban areas, long-term evolution (LTE) signals can be received ubiquitously at high power without any additional infrastructure. We present a machine learning approach to estimate the range between the LTE base station and UGV based on the LTE channel impulse response (CIR). The CIR, which includes information of signal attenuation from the channel, was extracted from the LTE physical layer using a software-defined radio (SDR). We designed a convolutional neural network (CNN) that estimates ranges with the CIR as input. The proposed method demonstrated better ranging performance than a received signal strength indicator (RSSI)-based method during our field test.
description: Submitted to IEEE/IEIE ICCE-Asia 2020
Uniaxial Néel Vector Control in Perovskite Oxide Thin Films by Anisotropic Strain Engineering
Creators: name: Kjærnes, K.
name: Hallsteinsen, I.
name: Chopdekar, R. V.
name: Moreau, M.
name: Bolstad, T.
name: Svenum, I-H.
name: Selbach, S. M.
name: Tybell, T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Antiferromagnetic thin films typically exhibit a multi-domain state, and control of the antiferromagnetic Néel vector is challenging as antiferromagnetic materials are robust to magnetic perturbations. By relying on anisotropic in-plane strain engineering of epitaxial thin films of the prototypical antiferromagnetic material LaFeO3, uniaxial Néel vector control is demonstrated. Orthorhombic (011)- and (101)-oriented DyScO3, GdScO3 and NdGaO3 substrates are used to engineer different anisotropic in-plane strain states. The anisotropic in-plane strain stabilises structurally monodomain monoclinic LaFeO3 thin films. The uniaxial Néel vector is found along the tensile strained b axis, contrary to bulk LaFeO3 having the Néel vector along the shorter a axis, and no magnetic domains are found. Hence, anisotropic strain engineering is a viable tool for designing unique functional responses, further enabling antiferromagnetic materials for mesoscopic device technology.
Radiative energy transfer in disordered photonic crystals
Creators: name: Erementchouk, M. V.
name: Deych, L. I.
name: Noh, H.
name: Cao, H.
name: Lisyansky, A. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The difficulty of description of the radiative transfer in disordered photonic crystals arises from the necessity to consider on the equal footing the wave scattering by periodic modulations of the dielectric function and by its random inhomogeneities. We resolve this difficulty by approaching this problem from the standpoint of the general multiple scattering theory in media with arbitrary regular profile of the dielectric function. We use the general asymptotic solution of the Bethe-Salpeter equation in order to show that for a sufficiently weak disorder the diffusion limit in disordered photonic crystals is presented by incoherent superpositions of the modes of the ideal structure with weights inversely proportional to the respective group velocities. The radiative transfer and the diffusion equations are derived as a relaxation of long-scale deviations from this limiting distribution. In particular, it is shown that in general the diffusion is anisotropic unless the crystal has sufficiently rich symmetry, say, the square lattice in 2D or the cubic lattice in 3D. In this case, the diffusion is isotropic and only in this case the effect of the disorder can be characterized by the single mean-free-path depending on frequency.
description: 27 pages, 4 figures
KKMC-hh for Precision Electroweak Phenomenology at the LHC
Creators: name: Yost, Scott A.
name: Dittrich, Matthew
name: Jadach, Stanislaw
name: Ward, B. F. L.
name: Wąs, Zbigniew
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We describe the program KKMC-hh, which calculates Z boson processes in hadronic collisions using coherent exclusive exponentiation (CEEX) with exact second-order photonic corrections at next-to-leading log and first-order weak vertex corrections, including initial and final state photonic radiation and initial-final interference. We describe current applications to precision forward-backward asymmetry calculations for the measurement of the electroweak mixing angle at the LHC.
description: 6 pages, 8 figures. Presented by S.A. Yost at ICHEP2020, Prague (virtual conference). Version 2 has minor wording changes
Η έμμεση νομική χειροτέρευση ως μερικότερη εκδήλωση της non reformation in pejus (άρθρο 470 εδ. α' ΚΠΔ):
Creators: name: Αδάμπας, Βασίλειος Ιάσωνα
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Η αρχή της μη χειροτέρευσης της θέσης του κατηγορούμενου
Ενδικα μέσα
NOn reformation in pejus

description: Η παρούσα μελέτη λαμβάνει το χαρακτήρα της διπλωματικής μου εργασίας στο αντικείμενο του δικονομικού ποινικού δικαίου. Μέσω αυτής γίνεται μία προσπάθεια ερμηνευτικής προσέγγισης της σπουδαιότερης ίσως πτυχής της αρχής της μη χειροτέρευσης της θέσης του κατηγορουμένου, η οποία καθιερώνεται ρητά στο άρθρο 470 εδ. α΄ ΚΠΔ. Σημείο αναφοράς για κάθε ερμηνευτική απόπειρα παρέχει η κριτική ανάγνωση των θέσεων της θεωρίας και της νομολογίας. Μόνο αυτή η συνδυαστική θεώρηση των πραγμάτων αναδεικνύει την κατά περίπτωση ενδεικνυόμενη δογματικά ορθή λύση στα μερικότερα ζητήματα που ανακύπτουν. Στο πρώτο μέρος της εργασίας επιχειρείται ο προσδιορισμός της ίδιας της έννοιας της έμμεσης νομικής χειροτέρευσης. Εν συνεχεία, καταγράφονται οι μερικότερες εκδηλώσεις αυτής, ενώ ταυτόχρονα αναζητούνται οι κατά περίπτωση θεωρητικές και νομολογιακές προσεγγίσεις. Σε κάθε περίπτωση, αυτονόητη τυγχάνει η περιγραφή της προσωπικής τοποθέτησης.
description: This study takes the character of my diplomatic work in the subject of penal procedural law. Through this effort I am trying to achieve an interpreting approach of perhaps the most important aspect of the principle of “non reformatio in pejus” which is clearly established in the Article 470 of penal procedure code. It is of great importance the critique reading of the positions of the theory and jurisprudence. Only this combining procedure can lead to proper solution to issues arising .In the first part of the study, an effort is made to define the concept itself. Then some expessions of the concept are recorded and finally the personal thesis (opinion) is obvious.
Campos magnéticos em um cilindro supercondutor pelo modelo de London
Creators: name: Lessa Bernardineli, Danilo
Publisher: name: Zenodo
Year: 2018
Subjects: electromagnetism
physics

description: Neste trabalho, desenvolverá-se expressões para o potencial vetor e o campo magnético originário de um cilindro supercondutor infinito de acordo com a equação de London e de modo a rediscutir o artigo de Miguel C. N. Fiolhais e Hanno Essén ao mesmo tempo em que são feitas visualizações para a configuração do campo magnético - os quais indicam o surgimento e evolução de vórtices e turbulência internamente e externamente conforme o cilindro passa de um estado normal para um supercondutivo. Por último, são colocados ingredientes para uma eventual tentativa de caracterizar a corrente dos elétrons superfluidos no supercondutor.
Component based engineering σε embedded real time systems με τη χρήση του Generic modelling environment:
Creators: name: Τασόπουλος, Χρήστος
name: Κυδωνοπούλου, Μαρίνα Ηλία
name: Παπαδημόπουλος, Αναστάσιος Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2009

description: Ο σκοπός της παρούσης διπλωματικής εργασίας είναι να παρουσιάσει τις βασικές αρχές της μεθοδολογίας ανάπτυξης λογισμικού Component-Based System Engineering (CBSE) και τα διαθέσιμα (υπό τη μορφή ανοικτού κώδικα) λογισμικά εργαλεία υποστήριξης της μεθοδολογίας αυτής, να εγκαταστήσει ένα τέτοιο αντιπροσωπευτικό εργαλείο και να επιδείξει μια περίπτωση εφαρμογής της μέσω της χρήσης του εργαλείου αυτού. Το εργαλείο που επελέγη είναι το περιβάλλον μοντελοποίησης GME της σουίτας εργαλείων CoSMIC, και η μελετηθείσα εφαρμογή αφορά στην ανάπτυξη μιας δικτυακής δομής υπολογιστών μικρής εταιρείας.Στο κεφάλαιο 1 αναπτύσσονται οι γενικές αρχές της προαναφερθείσας μεθοδολογίας, ενώ στο κεφάλαιο 2 γίνεται εκτενέστερη αναφορά στα real-time embedded systems, όπου και γίνεται φανερή η σύνδεσή τους με το μοντέλο του component-based programming και του component middleware.Τέλος, στα κεφάλαια 3 και 4 γίνεται μια εκτενής περιγραφή του εργαλείου ανάπτυξης (και πιο συγκεκριμένα μοντελοποίησης) τέτοιων συστημάτων, και υλοποιείται ένα παράδειγμα εφαρμογής του για καλύτερη κατανόηση.
description: Current thesis purpose is to develop the general principles of Component based Software Engineering (CBSE) and all the available software tools for particular software methodology.A new GUI tool was downloaded so as to design a new application of a small company. Particular tool is a part of a greater tools-platform which is called CoSmic.In chapter 1 all the principles of Component based engineering are mentioned, while in chapter 2 basic principles of real time embedded systems are reffered.Finally, in chapters 3 and 4, we have a brief analysis of GME platform and an application paradigm, so as to indicate particular use of specific application.
Go and return propagation of biphotons in fiber and polarization entanglement
Creators: name: Brida, G.
name: Chekhova, M. V.
name: Genovese, M.
name: Krivitsky, L. A.
name: Predazzi, E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Propagation of entangled photons in optical fiber is one of the fundamental issues for realizing quantum communication protocols. When entanglement in polarization is considered, arises the problem of compensating for the fiber effect on photons polarization. In this paper we demonstrate an effective solution where a Faraday mirror allows to cancel undesired effects of polarization drift in fiber. This technique is applied to a protocol for generating Bell states by a narrow temporal selection of the second-order intensity correlation function.
description: 6 pages, 4 figures
Single-File diffusion in a Box
Creators: name: Lizana, Ludvig
name: Ambjörnsson, Tobias
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study diffusion of (fluorescently) tagged hard-core interacting particles of finite size in a finite one-dimensional system. We find an exact analytical expression for the tagged particle probability density using a coordinate Bethe-ansatz, from which the mean square displacement is calculated. The analysis show the existence of three regimes of drastically different behavior for short, intermediate and large times. The results show excellent agreement with stochastic simulations (Gillespie algorithm). The findings of the Letter holds promise for the development of novel bio-nano sensors.
description: 5 pages, 4 figures
RSS-based LTE Base Station Localization Using Single Receiver in Environment with Unknown Path-Loss Exponent
Creators: name: Jeong, Suhui
name: Lee, Halim
name: Kang, Taewon
name: Seo, Jiwon
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: With the increasing demand for location-based services, localization technology research has recently intensified. Received signal strength (RSS)-based localization has the advantage of simplicity. However, as RSS-based localization requires the path-loss model parameters, it is difficult to use in place on which those parameters are unknown. In prior research, a transmitter localization algorithm with multiple stationary receivers was proposed for use under unknown path-loss exponent (PLE) conditions. However, if a mobile receiver is utilized, the localization would be possible with a single receiver alone. In this paper, we suggest a method of RSS-based LTE base station (BS) localization with a single mobile receiver when the PLE is unknown. We also propose an efficient mobile-receiver movement method to improve the PLE estimation and BS localization accuracy. Simulation results demonstrate the performance of the proposed methods.
description: Submitted to ICTC 2020
Υλοποίηση οπτικής γεννήτριας υπερσυνεχούς φάσματος και παραγωγή ακτινοβολίας THz:
Creators: name: Ακακιάδου, Γεωργία Ανάργυρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Υπερσυνεχές φάσμα
THz ακτινοβολία
PCF ίνες
Fabry-Perot φίλτρο
Supercontinuum generation
THz radiation
PCF fibers
Fabry-Perot filter

description: Η παραγωγή supercontinuum generation έχει προσελκύσει το ενδιαφέρον της επιστημονικής κοινότητας γιατί έχει πολλαπλές εφαρμογές σε διάφορες ερευνητικές περιοχές, όπως στην βιοϊατρική για την παραγωγή THz ακτινοβολίας για απεικόνιση. Στα πλαίσια της παρούσας διπλωματικής εργασίας μελετήθηκε σε πρώτη φάση το φαινόμενο supercontinuum generation σε PCF ίνες και στη συνέχεια έγινε χρήση ενός συμβολόμετρου Fabry-Perot, προκειμένου να παραχθεί THz ακτινοβολία με φασματική απόσταση που κατά την πειραματική διαδικασία ρυθμίστηκε στο 0.5THz, στο 1ΤΗz και στα 2THz. Η φασματική εξάπλωση με την παραγωγή suprecontinuum είναι το αποτέλεσμα της συνέργειας γραμμικών αλλά και ισχυρά μη γραμμικών φαινομένων μέσα σε ένα μη γραμμικό μέσο. Στην παρούσα εργασία η ιδέα της χρήσης των PCF ινών για ενίσχυση των μη γραμμικών φαινομένων τα οποία διεγείρουν την παραγωγή supercontinuum, στηρίζεται στην ικανότητα τους να περιορίζουν το φως σε μια πολύ μικρή περιοχή, με αποτέλεσμα να αυξάνεται η ένταση του φωτός στον πυρήνα πολύ περισσότερο από ότι σε μια τυπική μονορυθμική ίνα. Αυτή η ικανότητα των PCF οφείλεται στο υψηλό βήμα του δείκτη διάθλασης μεταξύ του πυρήνα και της μικροδομής του περιβλήματος. Γενικά οι ιδιότητες των PCF ινών τις καθιστούν ελκυστικές για παραγωγή supercontinuum.
description: Broadband optical supercontinuum sources continue to attract intense research interest because of their numerous important applications in various domains such as biophotonic imaging by generation of THz radiation. Supercontinuum generation leads to the spectral broadening of the input spectrum. The spectral broadening is usually accomplished by propagating optical pulses through a strongly nonlinear device, such as an optical fiber. Of special interest are photonic crystal fibers, mainly due to their characteristics, which can allow a strong nonlinear interaction over a significant length of fiber. Supercontinuum has attracted a great deal of attention in recent years thanks to the development of photonic crystal fibres (PCFs) which have proven to be ideal media for nonlinear optical interactions. In the present diploma thesis a short Gaussian pulse is spectrally broadened via supecontinuum generation in a photonic crystal fiber. The spectral component choice of this supercontinuum signal is achieved via optical filtering using a Fabry-Perot interferometer. During the experimental procedure were obtained frequency distances at 0.5THz, 1THz and 2THz.
Systematic and Statistical Uncertainties of the Hilbert-Transform Based High-precision FID Frequency Extraction Method
Creators: name: Hong, Ran
name: Corrodi, Simon
name: Charity, Saskia
name: Baessler, Stefan
name: Bono, Jason
name: Chupp, Timothy
name: Fertl, Martin
name: Flay, David
name: Garcia, Alejandro
name: George, Jimin
name: Giovanetti, Kevin Louis
name: Gorringe, Timothy
name: Grange, Joseph
name: Hong, Kyun Woo
name: Kawall, David
name: Kiburg, Brendan
name: Li, Bingzhi
name: Osofsky, Rachel
name: Pocanic, Dinko
name: Ramachandran, Suvarna
name: Smith, Matthias
name: Swanson, Herbert Erik
name: Tewsley-Booth, Alec
name: Winter, Peter
name: Yang, Tianyu
name: Zheng, Kai
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Pulsed nuclear magnetic resonance (NMR) is widely used in high-precision magnetic field measurements. The absolute value of the magnetic field is determined from the precession frequency of nuclear magnetic moments. The Hilbert transform is widely used to extract the phase function from the observed free induction decay (FID) signal and then its frequency. In this paper, a detailed implementation of a Hilbert-transform based FID frequency extraction method is described. How artifacts and noise level in the FID signal affect the extracted phase function are derived analytically. A method of mitigating the artifacts in the extracted phase function of an FID is discussed. Correlations between noises of the phase function samples are studied for different noise spectra. We discovered that the error covariance matrix for the extracted phase function is nearly singular and improper for constructing the $χ^2$ used in the fitting routine. A down-sampling method for fixing the singular covariance matrix has been developed, so that the minimum $χ^2$-fit yields properly the statistical uncertainty of the extracted frequency. Other practical methods of obtaining the statistical uncertainty are also discussed.