cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Anisotropic spin relaxation in quantum dots
Creators: name: Olendski, O.
name: Shahbazyan, T. V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study theoretically phonon-assisted spin relaxation of an electron confined in an elliptical quantum dot (QD) subjected to a tilted magnetic field. In the presence of both Rashba and Dresselhaus spin-orbit terms, the relaxation rate is anisotropic with respect to the in-plane field orientation. This anisotropy originates from the interference, at nonzero tilt angle, between the two spin-orbit terms. We show that, in a narrow range of magnetic field orientations, the relaxation rate exhibits anomalous sensitivity to variations of the QD parameters. In this range, the relative change in the relaxation rate with in-plane field orientation is determined {\em solely} by the spin-orbit coupling strengths and by the dot geometry. This allows simultaneous determination of both Rashba and Dresselhaus coupling parameters and the dot ellipticity from analysis of the angular dependence of the relaxation rate.
description: 7 pages, 3 figures. Extended version of paper published in PRB-RC
Columnar versus smectic order in systems of charged colloidal rods
Creators: name: Wensink, H. H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the stability of inhomogeneous liquid crystalline states in systems of monodisperse, stiff, charged rods. By means of a bifurcation analysis applied to the Onsager free energy for charged rods in strongly nematic states, we investigate nematic-smectic and nematic-columnar instabilities as a function of the Debye screening length. While the nematic-smectic transition clearly pre-emts the nematic-columnar one in the regime of strong screening a marked stability of hexagonal columnar order is observed at larger screening lengths. The theoretical results are substantiated by Brownian dynamics computer simulation results based on the Yukawa-site model. Our findings connect to experiments on tobacco mosaic virus rods in particular but might be relevant for soft rod-like mesogens in strong external directional fields in general.
description: 14 pages, 6 figures, to appear in J. Chem. Phys
Marginal deformations and RG flows for type IIB S-folds
Creators: name: Arav, Igal
name: Gauntlett, Jerome P.
name: Roberts, Matthew M.
name: Rosen, Christopher
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct a continuous one parameter family of $AdS_4\times S^1\times S^5$ S-fold solutions of type IIB string theory which have nontrivial $SL(2,\mathbb{Z})$ monodromy in the $S^1$ direction. The solutions span a subset of a conformal manifold that contains the known $\mathcal{N}=4$ S-fold SCFT in $d=3$, and generically preserve $\mathcal{N}=2$ supersymmetry. We also construct RG flows across dimensions, from $AdS_5\times S^5$, dual to $\mathcal{N}=4$, $d=4$ SYM compactified with a twisted spatial circle, to various $AdS_4\times S^1\times S^5$ S-fold solutions, dual to $d=3$ SCFTs. We construct additional flows between the $AdS_5$ dual of the Leigh-Strassler SCFT and an $\mathcal{N}=2$ S-fold as well as RG flows between various S-folds.
description: 49 pages, 8 figures. Typos in table 4 corrected. Published version
title: Rollenverständnis von Pflegeexpert*innen in der Primärversorgung
Creators: name: Seismann-Petersen, Swantje
name: Köpke, Sascha
name: Inkrot, Simone
Publisher: name: German Medical Science GMS Publishing House
Year: 2021
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund/Fragestellung: Um die gesundheitliche Versorgung im ländlichen Raum zu verbessern, wird der Einsatz akademisch qualifizierter Pflegefachpersonen im Rahmen einer „erweiterten Pflegepraxis“ diskutiert. In dem Projekt „HandinHand“ führen Pflegeexpert*innen[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Who cares? – EbM und Transformation im Gesundheitswesen; 22. Jahrestagung des Deutschen Netzwerks Evidenzbasierte Medizin
Carbon Rich Extremely Metal Poor Stars: Signatures of Population-III AGB stars in Binary Systems
Creators: name: Lau, H. B.
name: Stancliffe, R. J.
name: Tout, C. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use the Cambridge stellar evolution code STARS to model the evolution and nucleosynthesis of zero-metallicity intermediate-mass stars. We investigate the effect of duplicity on the nucleosynthesis output of these systems and the potential abundances of the secondaries. The surfaces of zero-metallicity stars are enriched in CNO elements after second dredge up. During binary interaction, such as Roche lobe overflow or wind accretion, metals can be released from these stars and the secondaries enriched in CNO isotopes. We investigate the formation of the two most metal poor stars known, HE 0107-5240 and HE 1327-2326. The observed carbon and nitrogen abundances of HE 0107-5240 can be reproduced by accretion of material from the companion-enhanced wind of a seven solar star after second dredge-up, though oxygen and sodium are underproduced. We speculate that HE 1327-2326, which is richer in nitrogen and strontium, may similarly be formed by wind accretion in a later AGB phase after third dredge-up.
description: 16 pages, 1 figure, 7 tables, accepted by MNRAS
Characterization of the effects of P30-35 CAMAL on normal and leukemic myelopoiesis
Creators: name: Leitch, Heather Alice
Publisher: name: University of British Columbia
Year: 2008

description: P30-35 CAMAL is a component of material immunoaffinity enriched from lysates of myeloid leukemia leucocytes using the monoclonal antibody CAMAL- 1. Reactivity with CAMAL- 1 is diagnostic of myeloid leukemias. CAMAL- 1 enriched material inhibited myelopoiesis by normal progenitor cells in vitro. This study demonstrates that inhibition is associated with P30-35 CAMAL. Neutrophilic granulocyte colonies were preferentially inhibited by P30-35 CAMAL while higher concentrations affected all colony types. Nonadherent progenitor cell numbers were reduced in P30-35 CAMAL-treated long term cultures of normal marrow cells whereas adherent cell numbers were increased, suggesting a block in differentiation. In addition, colony formation by murine cells was inhibited by P30-35 CAMAL. As in cultures of human cells, neutrophilic granulocyte colonies were preferentially inhibited, indicating that downregulation of normal myelopoiesis by P30-35 CAMAL crosses species barriers, and might be an important regulatory mechanism. Using highly enriched P30-35 CAMAL, a stimulatory effect on CML colony formation was defined. Stimulation of colony formation occurred at low and high concentrations of P30-35 CAMAL, but was reduced at intermediate concentrations. At low concentrations of P30-35 CAMAL primitive colonies were increased, whereas high concentrations affected all colony types. Colony formation by several myeloid leukemiaderived cell lines was increased by P30-35 CAMAL. P30-35 CAMAL prepared using protease inhibitors lacked effects on colony formation. Alterations in normal and CML colony formation were similar whether cells were preincubated or cocultured with P30-35 CAMAL. Activity was retained in the supematant of treated cells, indicating that effects were immediate and irreversible. Alterations in normal and CML colony formation were fully blocked using either phenyl methyl sulfonyl fluoride or a chloro-methyl ketone-linked peptide, both inhibitors of serine protease activity, suggesting that the alterations in myelopoiesis require serine protease activity. Experiments using characterized neutrophil proteins suggested protease activity in P30-35 CAMAL preparations which might be unique. Reactivity of the monoclonal antibodies a-P30/35, raised against P30-35 CAMAL, and CAMAL- 1 was compared. Both antibodies reacted more extensively with CML than with normal leucocytes, and cc-P30/35 reacted with several myeloid leukemia-derived cell lines, suggesting that the antigen recognized by CAMAL- 1 and the component which alters myelopoiesis might form an association.
Experimental observation of two-dimensional fluctuation magnetization in the vicinity of T_c for low values of the magnetic field in deoxygenated YBa_2Cu_3O_{7-x}
Creators: name: Salem-Sugui,, S.
name: Alvarenga, A. D.
name: Vieira, V. N.
name: Schilling, O. F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We measured isofield magnetization curves as a function of temperature in two single crystal of deoxygenated YBaCuO with T_c = 52 and 41.5 K. Isofield MvsT were obtained for fields running from 0.05 to 4 kOe. The reversible region of the magnetization curves was analyzed in terms of a scaling proposed by Prange, but searching for the best exponent $\upsilon$. The scaling analysis carried out for each data sample set with $\upsilon$=0.669, which corresponds to the 3D-xy exponent, did not produced a collapsing of curves when applied to MvsT curves data obtained for the lowest fields. The resulting analysis for the Y123 crystal with T_c = 41.5 K, shows that lower field curves collapse over the entire reversible region following the Prange's scaling with $\upsilon$=1, suggesting a two-dimensional behavior. It is shown that the same data obeying the Prange's scaling with $\upsilon$=1 for crystal with T_c = 41.5 K, as well low field data for crystal with $T_c$ = 52 K, obey the known two-dimensional scaling law obtained in the lowest-Landau-level approximation.
description: 4 pages, 3 figures
title: Die Rolle der Pflegenden in der pharmazeutischen Versorgung in Deutschland
Creators: name: Klatt, Thomas
name: Friedrichs, Juliane
name: Baltes, Marion
name: Langer, Gero
name: Meyer, Gabriele
Publisher: name: German Medical Science GMS Publishing House
Year: 2021
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund/Fragestellung: Pflegende in anderen europäischen Ländern übernehmen deutlich erweiterte Aufgaben in der pharmazeutischen Versorgung, zum Beispiel die Verschreibung vorab festgelegter Medikamente. Im Rahmen der europäischen Studie DeMoPhaC in 14 Ländern[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Who cares? – EbM und Transformation im Gesundheitswesen; 22. Jahrestagung des Deutschen Netzwerks Evidenzbasierte Medizin
Μελέτη της θερμοφωταύγειας διαφορετικής προέλευσης δειγμάτων Φθοριούχου Λιθίου (LiF: Mg+,Ti+) συναρτήσει της θερμοκρασίας ακτινοβόλησης μεταξύ 20-230οC
Creators: name: Κωνσταντινίδης, Παύλος Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Θερμοφωταύγεια
Φθοριούχο λίθιο
Ακτινοβόληση με θέρμανση
Thermoluminescence
Lithium fluoride
Irradiation with heating

description: Η παρούσα διπλωματική εργασία μελετάει την ευαισθησία και την συμπεριφορά στην ακτινοβολία βήτα των ειδών της οικογένειας Φθοριούχου Λιθίου (LiF:Mg+,Tl+) σαν συνάρτηση της θερμοκρασίας ακτινοβόλησης μέσω της μεθόδου της θερμοφωταύγειας. Τα υλικά που χρησιμοποιούνται είναι Αμερικάνικης (TLD-600, TLD-700) και Πολωνικής (MTS-600, MTS-700) καταγωγής ανάλογα με τις ποσότητες των ισοτόπων 6Li και 7Li που περιέχουν. Για τα δοσίμετρα αυτά, οι δύο θερμικές διεργασίες είναι της ταυτόχρονης ακτινοβόλησης με θέρμανση και της ακτινοβόλησης με μετέπειτα θέρμανση. Πραγματοποιήθηκαν δύο φορές για κάθε υλικό σε διαφορετικές δόσεις, συγκεκριμένα 0,38 Gy και 1,9 Gy. Παρουσιάζεται η μέθοδος της ψηφιοποιημένης ανάλυσης καμπύλων (CCD), οι ενέργειες και οι τάξεις κινητικής κάθε κορυφής, τα διαγράμματα μεταβολής των φωτοκαμπύλων του εκάστοτε δείγματος κατά την διάρκεια των πειραμάτων και διαγράμματα μεταβολής ολοκληρωμάτων έντασης συναρτήσει θερμοκρασίας θέρμανσης. Στο τέλος, δίνονται τα αποτελέσματα ολοκληρωμένα και παρατίθενται ολικά τα συμπεράσματα κατά τις συγκρίσεις των τεσσάρων ειδών Φθοριούχου Λιθίου.
description: This thesis presents the study of the beta ray sensitivity and behavior of the types of the Lithium Fluoride family (LiF: Mg+, Ti+) as a function of radiation temperature via the thermoluminescence method. The materials that are used are of American (TLD-600, TLD-700) and Polish (MTS-600, MTS-700) origins depending on the quantity of 6Li and 7Li isotopes. For these dosimeters, the two thermal processes are namely the simultaneous radiation with heating and the post radiation heating. These processes took place twice for each material in different does, specifically at 0,38 Gy and 1,9 Gy. The Computerized Curve Deconvolution method, the peaks’ activation energies and their kinetic order, as well as the changes in integral intensities versus heating temperatures charts are presented. In the end, the final results are given and the conclusions are presented for the comparison of the four types of Lithium Fluoride.
description: Σε συνεργασία με το Ινστιτούτο Τεχνολογίας Γκρενόμπλ (Γαλλία), το ΕΚΕΦΕ Δημόκριτος, και το CNRS (Centre National de la Researche Scientifique, Γαλλία)
Finite-temperature effects on the number fluctuation of ultracold atoms across the Superfluid to Mott-insulator transition
Creators: name: Lu, Xiancong
name: Yu, Yue
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We study the thermodynamics of ultracold Bose atoms in optical lattices by numerically diagonalizing the mean-field Hamiltonian of the Bose-Hubbard model. This method well describes the behavior of long-range correlations and therefore is valid deep in the superfluid phase. For the homogeneous Bose-Hubbard model, we draw the finite-temperature phase diagram and calculate the superfluid density at unity filling. We evaluate the finite-temperature effects in a recent experiment probing number fluctuation [Phys. Rev. Lett. \textbf{96}, 090401 (2006)], and find that our finite-temperature curves give a better fitting to the experimental data, implying non-negligible temperature effects in this experiment.
description: 7 pages,7 figures, final version for publication
title: Die Schwangerenversorgung im Spannungsfeld zwischen Ärzten und Hebammen
Creators: name: Wende, Danny
name: Hertle, Dagmar
Publisher: name: German Medical Science GMS Publishing House
Year: 2021
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund/Fragestellung: Die Versorgung Schwangerer zählt zu den häufigsten Behandlungsanlässen in Deutschland. Im Gegensatz zu anderen Bereichen werden hier überwiegend gesunde Frauen von zwei Berufsgruppen, den Ärztinnen und den Hebammen, betreut. Das nationale Gesundheitsziel[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Who cares? – EbM und Transformation im Gesundheitswesen; 22. Jahrestagung des Deutschen Netzwerks Evidenzbasierte Medizin
Derivative-Free Reinforcement Learning: A Review
Creators: name: Qian, Hong
name: Yu, Yang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Reinforcement learning is about learning agent models that make the best sequential decisions in unknown environments. In an unknown environment, the agent needs to explore the environment while exploiting the collected information, which usually forms a sophisticated problem to solve. Derivative-free optimization, meanwhile, is capable of solving sophisticated problems. It commonly uses a sampling-and-updating framework to iteratively improve the solution, where exploration and exploitation are also needed to be well balanced. Therefore, derivative-free optimization deals with a similar core issue as reinforcement learning, and has been introduced in reinforcement learning approaches, under the names of learning classifier systems and neuroevolution/evolutionary reinforcement learning. Although such methods have been developed for decades, recently, derivative-free reinforcement learning exhibits attracting increasing attention. However, recent survey on this topic is still lacking. In this article, we summarize methods of derivative-free reinforcement learning to date, and organize the methods in aspects including parameter updating, model selection, exploration, and parallel/distributed methods. Moreover, we discuss some current limitations and possible future directions, hoping that this article could bring more attentions to this topic and serve as a catalyst for developing novel and efficient approaches.
description: This article has been accepted by Frontiers of Computer Science in 2020
title: Neue Rollen für Pflegende – Advance Care Planning im ambulanten Setting: Ergebnisse aus der Prozessevaluation der STADPLAN-Studie
Creators: name: Silies, Katharina
name: Schnakenberg, Rieke
name: Hoffmann, Falk
name: Langner, Henriette
name: Kirchner, Änne
name: Berg, Almuth
name: Meyer, Gabriele
name: Köberlein-Neu, Juliane
name: Huckle, Tilman
name: Köpke, Sascha
Publisher: name: German Medical Science GMS Publishing House
Year: 2021
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund/Fragestellung: Ziel vorausschauender Versorgungsplanung (Advance Care Planning, ACP) ist es, durch begleitete Kommunikation Wünsche und Werte eines Menschen für seine pflegerische und medizinische Versorgung zu reflektieren und ggf. zu dokumentieren, insbesondere für [zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Who cares? – EbM und Transformation im Gesundheitswesen; 22. Jahrestagung des Deutschen Netzwerks Evidenzbasierte Medizin
Disorder-induced trapping versus Anderson localization in Bose-Einstein condensates expanding in disordered potentials
Creators: name: Sanchez-Palencia, Laurent
name: Clément, David
name: Lugan, Pierre
name: Bouyer, Philippe
name: Aspect, Alain
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We theoretically investigate the localization of an expanding Bose-Einstein condensate with repulsive atom-atom interactions in a disordered potential. We focus on the regime where the initial inter-atomic interactions dominate over the kinetic energy and the disorder. At equilibrium in a trapping potential and for small disorder, the condensate shows a Thomas-Fermi shape modified by the disorder. When the condensate is released from the trap, a strong suppression of the expansion is obtained in contrast to the situation in a periodic potential with similar characteristics. This effect crucially depends on both the momentum distribution of the expanding BEC and the strength of the disorder. For strong disorder, the suppression of the expansion results from the fragmentation of the core of the condensate and from classical reflections from large modulations of the disordered potential in the tails of the condensate. We identify the corresponding disorder-induced trapping scenario for which large atom-atom interactions and strong reflections from single modulations of the disordered potential play central roles. For weak disorder, the suppression of the expansion signals the onset of Anderson localization, which is due to multiple scattering from the modulations of the disordered potential. We compute analytically the localized density profile of the condensate and show that the localization crucially depends on the correlation function of the disorder. In particular, for speckle potentials the long-range correlations induce an effective mobility edge in 1D finite systems. Numerical calculations performed in the mean-field approximation support our analysis for both strong and weak disorder.
description: New Journal of Physics; focus issue "Quantum Correlations in Tailored Matter - Common perspectives of mesoscopic systems and quantum gases"; 30 pages, 10 figures
Models for tent caterpillar-virus interactions
Creators: name: Beukema, Sarah Jenelle
Publisher: name: University of British Columbia
Year: 2008

description: Many species of forest Lepidoptera show eight to twelve year population cycles which may involve viral disease. To examine possible interactions between viral disease and population cycles of forest Lepidoptera I explored some models for insect-virus dynamics. All of the models produced population oscillations in their original form. However, after they were modified to conform more closely to the tent caterpillar system, none of the models produced realistic cycles. I then developed a new model specifically for the tent caterpillar system that included important features such as: reduced fecundity of individuals that had been exposed to the disease, transmission of the disease from mother to progeny, a free-living infective stage of the virus, and a horizontal transmission rate that varied with the larval stage, the number of individuals, and amount of virus present. Cyclic dynamics resulted from some simulations. The parameters producing the cycles were similar to actual data. However, unlike natural populations of tent caterpillars, in the simulated population the average fecundity decreased before the population started to decline and survival decreased at approximately the same time as the population. Important further research in the field should include investigation of the distribution and survival of free-living virus and factors that would reduce caterpillar survival at peak populations but not affect fecundity.
Magnetocaloric Studies of the Peak Effect in Nb
Creators: name: Daniilidis, N. D.
name: Dimitrov, I. K.
name: Mitrovic, V. F.
name: Elbaum, C.
name: Ling, X. S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report a magnetocaloric study of the peak effect and Bragg glass transition in a Nb single crystal. The thermomagnetic effects due to vortex flow into and out of the sample are measured. The magnetocaloric signature of the peak effect anomaly is identified. It is found that the peak effect disappears in magnetocaloric measurements at fields significantly higher than those reported in previous ac-susceptometry measurements. Investigation of the superconducting to normal transition reveals that the disappearance of the bulk peak effect is related to inhomogeneity broadening of the superconducting transition. The emerging picture also explains the concurrent disappearance of the peak effect and surface superconductivity, which was reported previously in the sample under investigation. Based on our findings we discuss the possibilities of multicriticality associated with the disappearance of the peak effect.
description: 30 pages, 10 figures
title: The use of formal care for dementia from a professional perspective: a scoping review
Creators: name: Brauer, Stefanie
name: Peper, Julia
name: Bieber, Anja
Publisher: name: German Medical Science GMS Publishing House
Year: 2021
Subjects: subject: 610 Medical sciences; Medicine

description: Background/research question: The progressive character of dementia usually leads to an increasing need for support. However, access to and use of professional support take place lately. Aspects influencing access to and use of formal care are often investigated, but an overview from a professional[for full text, please go to the a.m. URL]
description: Who cares? – EbM und Transformation im Gesundheitswesen; 22. Jahrestagung des Deutschen Netzwerks Evidenzbasierte Medizin
Κατασκευή γραφικού περιβάλλοντος (GUI) μέσω του προγράμματος MATLAB για τον υπολογισμό αντισταθμιστών γραμμικών πολυμεταβλητών συστημάτων
Creators: name: Βασίλας, Νικόλαος Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Γραμμικά πολυμεταβλητά συστήματα
Διοφαντική εξίσωση
Γραφικό περιβάλλον
Linear multivariable systems
Diophantine equation
Graphical user interface

description: Το αντικείμενο της παρούσας διπλωματικής εργασίας είναι η υλοποίηση προγράμματος όπου θα δέχεται γραμμικό, χρονικά αναλλοίωτο σύστημα πολλών εισόδων και πολλών εξόδων που περιγράφεται από αυστηρώς κανονική συνάρτηση μεταφοράς και θα υπολογίζει την οικογένεια κανονικών αντισταθμιστών που όταν τροφοδοτείται με μοναδιαία ανάδραση οδηγεί το κλειστό σύστημα σε προκαθορισμένους επιθυμητούς πόλους. Το πολυμεταβλητό σύστημα μετασχηματίζεται σε μία δεξιά πρώτη κλασματική περιγραφή και η εύρεση των κανονικών αντισταθμιστών έγκειται στην επίλυση της Διοφαντικής εξίσωσης πολυωνυμικών πινάκων. Εισάγοντας τη γενικευμένη Wolovich resultant η τελευταία δίνει ένα σύστημα γραμμικών εξισώσεων και οι λύσεις αυτών δίνουν την παραμετρική μορφή της κλάσης των κανονικών αντισταθμιστών. ´Ολα τα παραπάνω ενοποιήθηκαν σε γραφικό περιβάλλον (GUI), στη γλώσσα προγραμματισμού MATLAB, δίνοντας έτσι τη δυνατότητα μελέτης πολυμεταβλητών συστημάτων και εύρεσης όλων των αντισταθμιστών που στέλνουν το σύστημα στους επιθυμητούς πόλους. Ο σχεδιασμός του προγράμματος πραγματοποιήθηκε έτσι ώστε να αποτυπώνεται άμεσα οποιαδήποτε αλλαγή κάνοντας έτσι εύκολη τη ρύθμιση του αντισταθμιστή για να αποκτήσει το σύστημα τα επιθυμητά δυναμικά χαρακτηριστικά
description: The subject of this master thesis is the implementation of a program accepting a linear, time invariant multiple-input and multiple-output system described by a strictly proper transfer function and computes the class of proper compensators that when employed in a unity feedback loop gives rise to a closed loop system with predetermined desired poles. The multivariable system is transformed to a right coprime matrix fraction description and the calculation of the proper compensators leads to the solution of the polynomial matrix Diophantine equation. Introducing the generalized Wolovich resultant the latter yields to a system of linear equations whose solution result to the parameterized class of proper compensators. The above unified into a graphical user interface (GUI), in the MATLAB programming language, thus enables the opportunity to study multivariable systems and to find all the compensators which leads the system to the desired poles. The program designed in a way such that any change is immediately taken into account so making it easy to fine tune the compensator in order to obtain the desired dynamic characteristics
A New Measure for Weak Lensing Flexion
Creators: name: Okura, Yuki
name: Umetsu, Keiichi
name: Futamase, Toshifumi
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study a possibility to use the octopole moment of gravitationally lensed images as a direct measure of the third-order weak gravitational lensing effect, or the gravitational flexion. It turns out that there is a natural relation between flexion and certain combinations of octopole/higher-multipole moments which we call the Higher Order Lensing Image's Characteristics (HOLICs). This will allow one to measure directly flexion from observable octopole and higher-multipole moments of background images. We show based on simulated observations how the use of HOLICs can improve the accuracy and resolution of a reconstructed mass map, in which we assume Gaussian uncertainties in the shape measurements estimated using deep i'-band data of blank fields observed with Suprime-Cam on the Subaru telescope.
description: 18 pages, 2 figures, accepted for publication in ApJ
title: Restlebenserwartung als Kriterium bei der Allokation knapper intensivmedizinischer Ressourcen – eine juristische Bestandsaufnahme
Creators: name: Hübner, Joachim
name: Schewe, Denis Martin
name: Katalinic, Alexander
name: Frielitz, Fabian-S.
Publisher: name: German Medical Science GMS Publishing House
Year: 2021
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund/Fragestellung: Die Covid-19-Pandemie hat die Frage aufgeworfen, nach welchen Grundsätzen knappe Intensivkapazitäten zugeteilt werden sollen. Zweifelhaft ist insbesondere, ob eine Rolle spielen darf, wie viele Lebensjahre bei verschiedenen in Betracht kommenden Allokationsentscheidungen[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Who cares? – EbM und Transformation im Gesundheitswesen; 22. Jahrestagung des Deutschen Netzwerks Evidenzbasierte Medizin
title: ‘Good enough’? – Evaluating evidence generation for treatment recommendations on pharmaceutical therapies during the COVID-19 pandemic
Creators: name: Wüstner, Stefanie
name: Hogger, Sara
name: Leverkus, Friedhelm
Publisher: name: German Medical Science GMS Publishing House
Year: 2021
Subjects: subject: 610 Medical sciences; Medicine

description: Background/research question: Within the early COVID-19 pandemic, the established principles of evidence-based medicine were partly overridden since immediate actions were required to fight serious disease. Many critically ill patients were treated experimentally and the authors of treatment recommendations[for full text, please go to the a.m. URL]
description: Who cares? – EbM und Transformation im Gesundheitswesen; 22. Jahrestagung des Deutschen Netzwerks Evidenzbasierte Medizin
Οικονομικά της Ενέργειας : Α.Π.Ε.
Creators: name: Λασκάκης, Επαμεινώνδας Αντωνίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Οικονομικά
Ενέργεια
ΑΠΕ
Ανανεώσιμες πηγές ενέργειας
Economics
Energy
Renewable resources

description: Στην παρούσα εργασία θα αναφερθούμε στα διάφορα ζητήματα που ανακύπτουν από την αναγκαιότητα που έχει δημιουργηθεί στη σύγχρονη πραγματικότητα για στροφή προς τις διάφορες ανανεώσιμες πηγές ενέργειας και στην εγκατάλειψη των μέχρι τώρα συμβατικών μορφών, όπως και τα συγκριτικά μειονεκτήματα και πλεονεκτήματα ανάμεσά τους. Εν συνεχεία αναλύονται οι διάφορες πολιτικές δράσης σχετικά με τις ΑΠΕ, όπως ο μετριασμός της κλιματικής αλλαγής, η ενεργειακή ασφάλεια, η πράσινη ανάπτυξη κ.α.. Μετέπειτα γίνεται αναφορά στις δυνατότητες που υπάρχουν σχετικά με τις ΑΠΕ στις αγορές δραστηριοποίησής τους. Ακόμη περιγράφεται ότι η βραχυπρόθεσμη οριακή τιμολόγηση δεν θα είναι κατάλληλος σχεδιασμός για τις μελλοντικές αγορές με μεγάλο ποσοστό ΑΠΕ ( “merit order effect of Renewable energy”). Υποστηρίζεται ότι υπό αυτές τις συνθήκες, οι επενδύσεις σε ανανεώσιμες πηγές ενέργειας δεν θα είναι σε θέση να ανακτήσουν το κόστος κεφαλαίου και τελικά δεν θα πραγματοποιηθούν. Επιπροσθέτως αναφέρονται περαιτέρω τα ζητήματα των οικονομικών ζητημάτων της χρήσης των ΑΠΕ, όπως επίσης γίνεται μια οικονομική ανάλυση και αξιολόγηση των μονάδων ΑΠΕ
description: In this paper we will address the various issues arising from the necessity that has been created in the modern reality for turning to the various renewable sources of energy and abandoning the conventional forms so far, as well as the comparative disadvantages and advantages among them. Thereafter, the various RES(Renewable energy resources)-related policies are analyzed, such as climate change mitigation, energy security, green growth etc. Later reference is made to the potential of RES in the markets, in which they could be activated . It is also described that short-term marginal pricing will not be an appropriate planning for future markets with a large percentage of RES ("merit order effect of Renewable energy"). It is argued that under these circumstances, investments in renewable energy will not be able to recover the cost of capital and will eventually not be realized. In addition, the economic issues related to the use of RES are further reported, as well as an economic analysis and evaluation of the RES units
The Curriculum Development of Morlum Folk Song of Thatpanom High School in Nakon Phanom Province
Creators: name: Rinda Prakobboon
Publisher: name: DR.KEN Institute of Academic Development and Promotion.
Year: 2022
Subjects: Curriculum Development
Morlum Folk Song

description: International Journal of Sociologies and Anthropologies Science Reviews (IJSASR), 2, 1, 13_22
Noise Threshold for a Fault-Tolerant Two-Dimensional Lattice Architecture
Creators: name: Svore, Krysta M.
name: DiVincenzo, David P.
name: Terhal, Barbara M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider a model of quantum computation in which the set of operations is limited to nearest-neighbor interactions on a 2D lattice. We model movement of qubits with noisy SWAP operations. For this architecture we design a fault-tolerant coding scheme using the concatenated [[7,1,3]] Steane code. Our scheme is potentially applicable to ion-trap and solid-state quantum technologies. We calculate a lower bound on the noise threshold for our local model using a detailed failure probability analysis. We obtain a threshold of 1.85 x 10^-5 for the local setting, where memory error rates are one-tenth of the failure rates of gates, measurement, and preparation steps. For the analogous nonlocal setting, we obtain a noise threshold of 3.61 x 10^-5. Our results thus show that the additional SWAP operations required to move qubits in the local model affect the noise threshold only moderately.
description: 20 pages, 11 figures. v2 has some small changes and a link to a website with supplementary material. v3: Corrects earlier error in fault tolerant T gate construction. Describes different strategy for non-Clifford fault tolerance
Existence and stability of static shells for the Vlasov-Poisson System with a fixed central point mass
Creators: name: Schulze, Achim
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 35B35; 85A05

description: We consider the Vlasov-Poisson system with spherical symmetry and an exterior potential which is induced by a point mass in the center. This system can be used as a simple model for a newtonian galaxy surrounding a black hole. For this system, we establish a global existence result for classical solutions with shell-like initial data, i.e. the support of the density is bounded away from the point mass singularity. We also prove existence and stability of stationary solutions which describe static shells, where we use a variational approach which was established by Y. Guo and G. Rein.
description: 26 pages
title: Die Situation von älteren Menschen zu Beginn der COVID-19 Pandemie – ein Scoping Review
Creators: name: Möhler, Ralph
name: Gärtner, Beate
name: Fuchs, Judith
name: Meyer, Gabriele
name: Scheidt-Nave, Christa
Publisher: name: German Medical Science GMS Publishing House
Year: 2021
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund/Fragestellung: Alter ist ein Risikofaktor für schwere oder tödliche Verläufe einer COVID-19 Erkrankung. Daher wurden in vielen Ländern für ältere Menschen besondere Maßnahmen ergriffen, wie Kontakteinschränkungen in Langzeitpflegeeinrichtungen[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Who cares? – EbM und Transformation im Gesundheitswesen; 22. Jahrestagung des Deutschen Netzwerks Evidenzbasierte Medizin
Kaon condensate with trapped neutrinos and high-density symmetry energy behavior
Creators: name: Odrzywolek, A.
name: Kutschera, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Effects of the neutrino trapping and symmetry energy behavior are investigated in the framework of the chiral Kaplan-Nelson model with kaon condensation. Decrease in the condensation threshold during deleptonization if found to be generic regardless uncertainties in the nucleon-kaon interactions and symmetry energy. Quantitatively however, differences are shown to be important
description: 6 pages, 10 figures, submitted to PLB
title: Pflegeheime in der COVID-19-Krise (HEICO) – Belastungen, Herausforderungen und Chancen der Pandemie – eine thematische Analyse
Creators: name: Sander, Marco
name: Bieber, Anja
name: Dammermann, Anna
name: Fleischer, Steffen
name: Dichter, Martin N.
Publisher: name: German Medical Science GMS Publishing House
Year: 2021
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund/Fragestellung: Während der COVID-19-Pandemie wurden in Deutschland Infektionsschutzmaßnahmen angeordnet, die in Pflegeheimen als Kontaktbeschränkungen, Besuchsverbote, Kohortierung und spezielle Hygienemaßnahmen umgesetzt wurden. Ziel von HEICO ist die Analyse und[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Who cares? – EbM und Transformation im Gesundheitswesen; 22. Jahrestagung des Deutschen Netzwerks Evidenzbasierte Medizin
Mit Vielfalt, Souveränität und Arbeitsteilung zu nachhaltigem Open Access: Impulse aus der ENABLE!-Community
Creators: name: Jobmann, Alexandra
name: Graf, Dorothee
name: Dalkilic, Evin
name: Gebert, Agathe
Publisher: name: Zenodo
Year: 2024
Subjects: Open access
Abhängigkeit
Souveränität
Kooperation
Gemeinschaftlichkeit

description: Die seit 2019 bestehende ENABLE!-Community umfasst alle relevanten Stakeholder, die den Prozess des Open-Access-Publizierens offen, gleichberechtigt, transparent und auf Augenhöhe diskutieren. Dazu gehören Autor:innen, Herausgeber:innen, Verlagsdienstleister, Scholar-led-Plattformen, Repositorien, Bibliotheken und Intermediäre. Uns treibt die Frage um, wie wir qualitätsgeprüftes, sozialverträgliches, finanzierbares und nachhaltiges Open Access organisieren können. Die Antwort darauf kann unserer Meinung nach nur lauten: arbeitsteilig. 

Die Vielfalt in der ENABLE!-Community sowie der bisher erarbeiteten Modelle vereint souveräne und selbstständig agierende Partner:innen. Der Erfolg der Kooperationen resultiert dabei aus aufwendigen, aber konstruktiven Aushandlungsprozessen zwischen Einzel- und Gesamtinteressen. Bei gegenseitiger Achtung unserer Souveränität besteht die Abhängigkeit in der gemeinsam anerkannten Notwendigkeit, eine gemeinsame Linie zu entwickeln. 

Beispiele für erfolgreich umgesetzte Modelle des gemeinschaftlichen Open-Access-Publizierens, wie die Open Library-Pakete bei transcript und wbv, scholarly-led-Journals oder die Entwicklung von P2O (Purchase to Open), zeigen, dass arbeitsteiliger Open Access effektiv sein kann. Dennoch bleiben Fragen offen, insbesondere der Finanzierung und der konkreten Aufgabenverteilung.

Ziel dieses Workshops ist es, die Teilnehmer:innen für diese Herausforderungen im Publikationsprozess zu sensibilisieren. Wir wollen sammeln, wer wann wofür zuständig sein könnte – statt alles wie bei DEAL in eine zentrale Verhandlungsinstanz abzugeben –, um eine echte und nachhaltige Transformation voranzubringen.

Folgende zentrale Fragestellungen sollen dabei an vier Stellwänden diskutiert werden:

Welche Vorteile/ Schwierigkeiten gibt es bei der Zusammenarbeit zwischen den Beteiligten? 

Wie professionalisieren wir bestehende Diamond-OA-Zeitschriften?

Wie binden wir unabhängige kommerzielle Verlage zum Erhalt der Bibliodiversität in den Geistes- und Sozialwissenschaften ein?

Bedeutet Vielfalt automatisch Unabhängigkeit? Wieviel Einheit(lichkeit) ist nötig für Handlungsfähigkeit?

Nach einem Input wandern die Teilnehmer:innen in Form eines Worldcafés in Kleingruppen an den vier Stellwänden vorbei, so dass jede/r an jeder Wand einmal ist. Moderiert werden die Stellwände jeweils von einem Mitglied des ENABLE!-Steuerungsgremiums. So wird die Diskussion auf Augenhöhe erlebbar und das Selbstverständnis und die Aufgaben jedes Akteurs für alle sichtbar.

Am Ende des Workshops erfolgt ein Wrap-Up durch die Stellwand-Moderator:innen anhand der Aufzeichnungen aus den vier Diskussionsrunden an ihren Wänden und im Nachgang wird eine ausführliche Ergebnisdarstellung auf der ENABLE!-Webseite erscheinen.
title: Barrieren und Förderfaktoren in der Primärversorgung während der COVID-19-Pandemie in Baden-Württemberg aus Sicht grundversorgender Ärzt*innen (PrimaryCovCare/„MWK Lessons learned COVID-19“)
Creators: name: Stengel, Sandra
name: Roth, Catharina
name: Breckner, Amanda
name: Cordes, Lara
name: Peters-Klimm, Frank
name: Schwill, Simon
name: Szecsenyi, Joachim
name: Wensing, Michel
Publisher: name: German Medical Science GMS Publishing House
Year: 2021
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund/Fragestellung: An der Bewältigung der COVID-19-Pandemie sind verschiedene Akteure des Gesundheitswesens beteiligt. Laut Kassenärztlicher Vereinigung wurden in Deutschland 86% der COVID-19-Patient*innen bislang ambulant versorgt. Weltweit ist das komplexe Einwirken[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Who cares? – EbM und Transformation im Gesundheitswesen; 22. Jahrestagung des Deutschen Netzwerks Evidenzbasierte Medizin
Separation of Variables in the open XXX chain
Creators: name: Frahm, H.
name: Seel, A.
name: Wirth, T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Other Condensed Matter (cond-mat.other)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We apply the Sklyanin method of separation of variables to the reflection algebra underlying the open spin-1/2 XXX chain with non-diagonal boundary fields. The spectral problem can be formulated in terms of a TQ-equation which leads to the known Bethe equations for boundary parameters satisfying a constraint. For generic boundary parameters we study the asymptotic behaviour of the solutions of the TQ-equation.
description: 19 pages, references added; to appear in Nucl. Phys. B
Ionization of large-scale absorbing haloes and feedback events from high-redshift radio galaxies
Creators: name: Binette, L.
name: Wilman, R. J.
name: Villar-Martin, M.
name: Fosbury, R. A. E.
name: Jarvis, M. J.
name: Rottgering, H. J. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present photoionization calculations for the spatially-extended absorbers observed towards the extended emission line spectrum of two high-redshift radio galaxies: 0943-242 (z=2.922) and 0200+015 (z=2.230), with the aim of reproducing the absorber column ratio, N(CIV)/N(HI). We explore the effects of using different UV continua in the photoionization calculations. A comparison is drawn between the absorber in 0200+015 and the two absorbers in the lensed Lynx Arc Nebula at z=3.36, which present similar N(CIV)/N(HI) ratios. We find that hot stars from a powerful starburst, or a metagalactic background radiation (MBR) in which stars dominate over quasars, are equally successful in producing the observed N(CIV)/N(HI), assuming subsolar absorber metallicities. These softer SEDs eliminate the factor 1000 difference in metallicity between the two absorbers encountered in earlier work assuming a powerlaw SED. The detected level of continuum flux in 0943-242 is consistent with stellar ionization. If the MBR is responsible for the ionization of the radio galaxy absorbing shells, their radii (if spherical) would be large (> 100 kpc) and their mass would be huge (>1E12 M_Sun), implying that a feedback event within the radiogalaxy has expelled more baryonic material than left within it. If, as we believe more likely, stellar sources within the radiogalaxy are responsible for the absorber's ionization, smaller radii of ~25 kpc and much smaller masses (~1E8-1E10 M_Sun) are inferred. This radius is consistent with the observed transition in radio source size between smaller sources where strong HI absorption is almost ubiquitous, and the larger sources where it is mostly lacking. Finally, we outline additional absorption line diagnostics which could further constrain the properties of the haloes and their ionization sources.
description: 15 pages, 10 figures. Accepted by A&A
Spontaneous propulsion of an isotropic colloid in a phase-separating environment
Creators: name: Decayeux, Jeanne
name: Dahirel, Vincent
name: Jardat, Marie
name: Illien, Pierre
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The motion of active colloids is generally achieved through their anisotropy, as exemplified by Janus colloids. Recently, there was a growing interest in the propulsion of isotropic colloids, which requires some local symmetry breaking. Although several mechanisms for such propulsion were proposed, little is known about the role played by the interactions within the environment of the colloid, which can have a dramatic effect on its propulsion. Here, we propose a minimal model of an isotropic colloid in a bath of solute particles that interact with each other. These interactions lead to a spontaneous phase transition close to the colloid, to directed motion of the colloid over very long timescales and to significantly enhanced diffusion, in spite of the crowding induced by solute particles. We determine the range of parameters where this effect is observable in the model, and we propose an effective Langevin equation that accounts for it and allows one to determine the different contributions at stake in self-propulsion and enhanced diffusion.
title: ExpertInnenräte in der SARS-CoV-2-Pandemie in Deutschland: eine Dokumentenanalyse aus Public-Health-Perspektive
Creators: name: Saringer-Hamiti, Lea
name: Sell, Kerstin
name: Geffert, Karin
name: Strahwald, Brigitte
name: Stratil, Jan
name: Pfadenhauer, Lisa
Publisher: name: German Medical Science GMS Publishing House
Year: 2021
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund/Fragestellung: In der SARS-CoV-2-Pandemie muss die Politik weitreichende Entscheidungen treffen. Diese sollten von wissenschaftlichen Erkenntnissen gestützt werden. Angesichts der meist limitierten Evidenz in Krisensituationen stellt dies eine große Herausforderung dar. Wissenschaftliche[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Who cares? – EbM und Transformation im Gesundheitswesen; 22. Jahrestagung des Deutschen Netzwerks Evidenzbasierte Medizin
A no-go theorem for polytropic spheres in Palatini f(R) gravity
Creators: name: Barausse, Enrico
name: Sotiriou, Thomas P.
name: Miller, John C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Non-vacuum static spherically-symmetric solutions in Palatini f(R) gravity are examined. It is shown that for generic choices of f(R), there are commonly-used equations of state for which no satisfactory physical solution of the field equations can be found within this framework, apart from in the special case of General Relativity, casting doubt on whether Palatini f(R) gravity can be considered as giving viable alternatives to General Relativity.
description: 7 pages, 1 figure. Version accepted for publication as a Fast Track Communication in CQG