cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Perspectives on cross-national comparisons of social work
Creators: name: Meeuwisse, Anna
Publisher: name: Locus Soci@l
Year: 2009

description: In this paper various attempts of studying and comparing social work in different countries are discussed and evaluated. Three main ways of making comparisons are identified: comparisons based on models of social policy, profession-oriented comparisons, and practice-oriented comparisons. Each of the three approaches captures essential aspects of similarities and differences in social work, but they all have obvious limitations as well.
description: Locus Soci@l, No 3 (2009)
Galactic breeze origin for the Fermi bubbles emission
Creators: name: Tourmente, Olivier
name: Rodgers-Lee, Donna
name: Taylor, Andrew M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The origin of the Fermi bubbles, which constitute two gamma-ray emitting lobes above and below the Galactic plane, remains unclear. The possibility that this Fermi bubbles gamma-ray emission originates from hadronic cosmic rays advected by a subsonic Galactic outflow, or breeze, is here explored. The simulation of a breeze solution and subsequent cosmic ray transport is carried out using the hydrodynamical code, PLUTO, in combination with a cosmic ray transport code. The Galactic outflow model obtained is found to be compatible with both inferences of the decelerating outflow velocity profile of the gas in the Fermi bubbles region, and evidence for the presence of a large amount of hot ionised gas out in the Galactic halo region. Although simple, this model is found to be able to reproduce the observed Fermi-LAT energy flux at high Galactic latitudes. Following these results a prediction concerning the gamma-ray emission for 1-3~TeV photons is made for future comparison with CTA/SWGO measurements.
Energy Positivity, Non-Renormalization, and Holomorphy in Lorentz-Violating Supersymmetric Theories
Creators: name: Clark, Adam B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This paper shows that the positive-energy and non-renormalization theorems of traditional supersymmetry survive the addition of Lorentz violating interactions. The Lorentz-violating coupling constants in theories using the construction of Berger and Kostelecky must obey certain constraints in order to preserve the positive energy theorem. Seiberg's holomorphic arguments are used to prove that the superpotential remains non-renormalized (perturbatively) in the presence of Lorentz-violating interactions of the Berger-Kostelecky type. We briefly comment on Lorentz-violating theories of the type constructed by Nibbelink and Pospelov to note that holomorphy arguments offer elegant proofs of many non-renormalization results, some known by other arguments, some new.
description: v3: Discussion and clarification added. References added. Results on gauge-kinetic function expanded
Bauspuren aus der Zeit der Stadtgründung im Stadtkern von Lippstadt
Creators: name: Gai, Sveva
name: Barthold, Peter
Publisher: name: Archäologie in Westfalen-Lippe
Year: 2016

description: .
description: Archäologie in Westfalen-Lippe, ARCHÄOLOGIE IN WESTFALEN-LIPPE 2014 (2015)
A investigação em serviço social em Portugal: uma aproximação a partir da formação pós-graduada
Creators: name: Rodrigues, Fernanda
name: Branco, Francisco
Publisher: name: Locus Soci@l
Year: 2009

description: Esta comunicação visa constituir-se numa reflexão crítica sobre a investigação na área de Serviço Social em Portugal, dando conta do estado e âmbito do conhecimento construído. Toma como base as dissertações de mestrado e teses de doutoramento produzidas no âmbito da qualificação pós-graduada em Serviço Social, tituladas por várias instituições universitárias nacionais e algumas estrangeiras no período de 1990 a 2003. De entre os eixos de análise possíveis sobre a produção existente, visa-se reflectir sobre a agenda implícita da investigação em Serviço Social em Portugal e a sua relevância para a produção de um conhecimento disciplinar. Serão igualmente exploradas linhas de análise comparada com os contextos europeu e internacional. Além da visão retrospectiva a que se acederá, serão ensaiadas reflexões propositivas para a construção de uma agenda investigativa significante para o desenvolvimento académico e científico do Serviço Social, em contexto da sociedade portuguesa. A presente comunicação retoma e desenvolve um trabalho preliminar de 2003.
description: Locus Soci@l, No 2 (2009)
title: Επίδραση των δομικών ενισχυτών CeO2 και La2O3 στην επιφανειακή και καταλυτική συμπεριφορά μονολιθικών καταλυτών Pt/Al2O3 κατά την διάσπαση του N2O
Creators: name: Δρόσου Αικατερίνη
Publisher: name: Technical University of Crete
Year: 2010

description: φ.1: Εισαγωγή -- Κεφ.2: Ατμοσφαιρική ρύπανση -- Κεφ.3: Υποδείξιο του αζώτου (N2O) -- Κεφ.4: Καταλυτική διάσπαση N2O
HyperNet: Self-Supervised Hyperspectral Spatial-Spectral Feature Understanding Network for Hyperspectral Change Detection
Creators: name: Hu, Meiqi
name: Wu, Chen
name: Zhang, Liangpei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The fast development of self-supervised learning lowers the bar learning feature representation from massive unlabeled data and has triggered a series of research on change detection of remote sensing images. Challenges in adapting self-supervised learning from natural images classification to remote sensing images change detection arise from difference between the two tasks. The learned patch-level feature representations are not satisfying for the pixel-level precise change detection. In this paper, we proposed a novel pixel-level self-supervised hyperspectral spatial-spectral understanding network (HyperNet) to accomplish pixel-wise feature representation for effective hyperspectral change detection. Concretely, not patches but the whole images are fed into the network and the multi-temporal spatial-spectral features are compared pixel by pixel. Instead of processing the two-dimensional imaging space and spectral response dimension in hybrid style, a powerful spatial-spectral attention module is put forward to explore the spatial correlation and discriminative spectral features of multi-temporal hyperspectral images (HSIs), separately. Only the positive samples at the same location of bi-temporal HSIs are created and forced to be aligned, aiming at learning the spectral difference-invariant features. Moreover, a new similarity loss function named focal cosine is proposed to solve the problem of imbalanced easy and hard positive samples comparison, where the weights of those hard samples are enlarged and highlighted to promote the network training. Six hyperspectral datasets have been adopted to test the validity and generalization of proposed HyperNet. The extensive experiments demonstrate the superiority of HyperNet over the state-of-the-art algorithms on downstream hyperspectral change detection tasks.
description: 14 pages, 17 figures
Balancing Unquantified Harms and Benefits in Antitrust Cases Under the Consumer Welfare Standard
Creators: name: Ginsburg, Douglas H.
Publisher: name: Columbia University
Year: 2019
Subjects: Antitrust law
Law enforcement
Consumer protection--Law and legislation
Corporation law

description: William Howard Taft—the most under-appreciated constitutional figure since George Mason, the father of the Bill of Rights—is no doubt best known as the 27th President, but his most significant contributions to our constitutional order came as Chief Justice. The federal judiciary today is the federal judiciary Taft gave us. During his tenure as Chief Justice, Taft convinced the Congress to create the Judicial Conference as the governing body of the federal courts; give the Supreme Court its own building; and, in the Judiciary Act of 1925, eliminate most of the Supreme Court’s mandatory jurisdiction.1 These reforms bolstered the independence of the federal judiciary, and permanently elevated its role in our society. Taft also made important contributions to antitrust, both as a judge2 and during his time as president. Although his predecessor, Teddy Roosevelt, is remembered as the “trustbuster,” Taft’s administration brought nearly twice as many cases in half the time.3 As Jeff Rosen explains in his excellent brief biography of Taft, TR and his successor had diametrically opposed ideas about how best to assure the competitiveness of markets.4 Roosevelt championed a regulatory model, with strict federal oversight of large corporations.5 Taft favored a law enforcement model, with aggressive prosecution of anticompetitive conduct, bearing in mind that “[m]ere size is no sin against the law.”6 In my view, Taft’s approach was preferable and has been vindicated over the course of the last century. The regulatory model would have substituted the discretion of regulators for the decisions of risk takers, with distortionary and welfare-reducing effects. The law enforcement approach, by contrast, protects competition while adhering to the rule of law.7 In this Article I hope to continue in Taft’s reformist footsteps by suggesting some additional tools antitrust enforcers and courts can use to make coherent, evidence-based decisions in the face of measurement difficulties.
title: Κέντρο Κινηματογράφου στο Μεταξουργείο και δημόσιος χώρος
Creators: name: Μπαλαδημα Ξανθη
Publisher: name: Technical University of Crete
Year: 2014

description: Αντικείμενο αυτής της εργασίας είναι η δημιουργία ενός κέντρου κινηματογράφου στην περιοχή του Μεταξουργείου, πιο συγκεκριμένα επί της πλατείας Αυδή. Πρόκειται για ένα κτήριο που συγκεντρώνει δραστηριότητες γύρω από τον κινηματογράφο. Λειτουργεί συμπληρωματικά με την Κρατική Ταινιοθήκη της Ελλάδος που βρίσκεται στην ίδια περιοχή. Το λειτουργικό πρόγραμμα είναι ένας συνδυασμός πολιτισμού, ψυχαγωγίας, τεχνολογίας και δημόσιου χώρου. Περιλαμβάνει χώρους προβολής ταινιών, συζήτησης, ψηφιακής επεξεργασίας, εκπαιδευτικών προγραμμάτων. Η κίνηση μέσα στο κτήριο αποτελεί συνέχεια της κίνησης των πεζών στην πλατεία και καταλήγει στις αίθουσες προβολής περνώντας από τα εργαστήρια επεξεργασίας οπτικό-ακουστικού υλικού και τις αίθουσες σεμιναρίων. Στόχος είναι η αδιάκοπη ροή δημόσιου χώρου από την πλατεία στο εσωτερικό του κτηρίου και η ανάπτυξη συλλογικών δραστηριοτήτων μέσω των ελεύθερων-ανοιχτών χώρων. Το κτήριο αποτελεί μια προέκταση του αστικού χώρου, σαν ένα δημόσιο καθιστικό.
Isotropic Markov semigroups on ultra-metric spaces
Creators: name: Bendikov, Alexander
name: Grigor'yan, Alexander
name: Pittet, Christophe
name: Woess, Wolfgang
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: 60J25, 47S10, 05C05, 81Q10

description: Let (X,d) be a locally compact separable ultra-metric space. Given a reference measure μ on X and a step length distribution on the non-negative reals, we construct a symmetric Markov semigroup P^t acting in L^2(X,μ). We study the corresponding Markov process. We obtain upper and lower bounds of its transition density and its Green function, give a transience criterion, estimate its moments and describe the Markov generator and its spectrum, which is pure point. In the particular case when X is the field of p-adic numbers, our construction recovers fractional derivative and the Taibleson Laplacian (spectral multiplier), and we can also apply our theory to the study of the Vladimirov Laplacian which is closely related to the concept of p-adic Quantum Mechanics. Even in this well established setting, several of our results are new. We also elaborate the relation between our processes and Kigami's jump processes on the boundary of a tree which are induced by a random walk. In conclusion, we provide examples illustrating the interplay between the fractional derivatives and random walks.
Memristor-based cryogenic programmable DC sources for scalable in-situ quantum-dot control
Creators: name: Mouny, Pierre-Antoine
name: Beilliard, Yann
name: Graveline, Sébastien
name: Roux, Marc-Antoine
name: Mesoudy, Abdelouadoud El
name: Dawant, Raphaël
name: Gliech, Pierre
name: Ecoffey, Serge
name: Alibart, Fabien
name: Pioro-Ladrière, Michel
name: Drouin, Dominique
Publisher: name: arXiv
Year: 2022
Subjects: subject: Hardware Architecture (cs.AR)
subject: Quantum Physics (quant-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Current quantum systems based on spin qubits are controlled by classical electronics located outside the cryostat at room temperature. This approach creates a major wiring bottleneck, which is one of the main roadblocks toward truly scalable quantum computers. Thus, we propose a scalable memristor-based programmable DC source that could be used to perform biasing of quantum dots inside of the cryostat (i.e. in-situ). This novel cryogenic approach would enable to control the applied voltage on the electrostatic gates by programming the resistance of the memristors, thus storing in the latter the appropriate conditions to form the quantum dots. In this study, we first demonstrate multilevel resistance programming of a TiO2-based memristors at 4.2 K, an essential feature to achieve voltage tunability of the memristor-based DC source. We then report hardwarebased simulations of the electrical performance of the proposed DC source. A cryogenic TiO2-based memristor model fitted on our experimental data at 4.2 K was used to show a 1 V voltage range and 100 uV in-situ memristor-based DC source. Finally, we simulate the biasing of double quantum dots enabling sub-2 minutes in-situ charge stability diagrams. This demonstration is a first step towards more advanced cryogenic applications for resistive memories such as cryogenic control electronics for quantum computers.
J. B. Nordhoff, Altwestfalen. Volk, Land, Grenzen, Münster 1898
Creators: name: Vleuten, F. Van
Publisher: name: Bonner Jahrbücher
Year: 2017

description: Rezension zu: Dr. J. B. Nordhoff, Professor an der Königl. Akademie zu Münster: Altwestfalen. Volk, Land, Grenzen. Der 53. Generalversammlung der Geschichts- und Altertumsvereine gewidmet. Münster i. W. Regensbergsche Buchhandlung 1898. 8°. 74 S.
description: Bonner Jahrbücher, Bd. 104 (1899): Bonner Jahrbücher : Jahrbücher des Vereins von Altertumsfreunden im Rheinlande
The Einstein-Hilbert action of the space of holomorphic maps from S^2 to CP^k
Creators: name: Alqahtani, L. S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Let $\mathcal{H}_{n,k}(Σ)$ be the space of degree $n\geq 1$ holomorphic maps from a compact Riemann surface $Σ$ to $\mathbb{C}P^k$. In the case $Σ=S^2$ and $n=1$, the $L^2$ metric on $\mathcal{H}_{1,k}(S^2)$ was computed exactly by Speight. In this paper, the Ricci curvature tensor and the scalar curvature on $\mathcal{H}_{1,k}(S^2)$ are determined explicitly for $k\geq 2$. An exact direct computation of the Einstein-Hilbert action with respect to the $L^2$ metric on $\mathcal{H}_{1,k}(S^2)$ is made and shown to coincide with a formula conjectured by Baptista.
description: 12 pages - updated version
Pequenos acontecimentos para novos rumos: um estudo de caso sobre os factores promotores de trajectórias de inclusão na intervenção com jovens com percursos de risco
Creators: name: Oliveira, Ana Maria Da Costa
Publisher: name: Locus Soci@l
Year: 2009

description: Este artigo resulta de um estudo de carácter exploratório sobre os factores promotores de trajectórias de inclusão junto de jovens com percursos de risco, o qual visa compreender quais os capitais aportados pelas intervenções sociais ao longo do percurso dos jovens, de forma a constituir uma base de análise sobre a diversidade das práticas profissionais e institucionais junto destes sujeitos. Este trabalho pretende, assim, constituir-se como um contributo no âmbito da intervenção em Serviço Social com jovens em risco, ao nível das respostas sociais para esta população.
description: Locus Soci@l, No 2 (2009)
Adaptive Kernel Kalman Filter
Creators: name: Sun, Mengwei
name: Davies, Mike E.
name: Proudler, Ian K.
name: Hopgood, James R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Sequential Bayesian filters in non-linear dynamic systems require the recursive estimation of the predictive and posterior distributions. This paper introduces a Bayesian filter called the adaptive kernel Kalman filter (AKKF). With this filter, the arbitrary predictive and posterior distributions of hidden states are approximated using the empirical kernel mean embeddings (KMEs) in reproducing kernel Hilbert spaces (RKHSs). In parallel with the KMEs, some particles, in the data space, are used to capture the properties of the dynamical system model. Specifically, particles are generated and updated in the data space, while the corresponding kernel weight mean vector and covariance matrix associated with the feature mappings of the particles are predicted and updated in the RKHSs based on the kernel Kalman rule (KKR). Simulation results are presented to confirm the improved performance of our approach with significantly reduced particle numbers, by comparing with the unscented Kalman filter (UKF), particle filter (PF) and Gaussian particle filter (GPF). For example, compared with the GPF, the proposed approach provides around 5% logarithmic mean square error (LMSE) tracking performance improvement in the bearing-only tracking (BOT) system when using 50 particles.
description: The manuscript has been accepted for publication as a regular paper in the IEEE Transactions on Signal Processing
Finite-size scaling of human-population distributions over fixed-size cells and its relation to fractal spatial structure
Creators: name: Corral, Alvaro
name: del Muro, Montserrat García
Publisher: name: arXiv
Year: 2022
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Using demographic data of high spatial resolution for a region in the south of Europe, we study the population over fixed-size spatial cells. We find that, counterintuitively, the distribution of the number of inhabitants per cell increases its variability when the size of the cells is increased. Nevertheless, the shape of the distributions is kept constant, which allows us to introduce a scaling law, analogous to finite-size scaling, with a scaling function reasonably well fitted by a gamma distribution. This means that the distribution of the number of inhabitants per cell is stable or invariant under addition with neighboring cells (plus rescaling), defying the central-limit theorem, due to the obvious dependence of the random variables. The finite-size scaling implies a power-law relations between the moments of the distribution and its scale parameter, which are found to be related with the fractal properties of the spatial pattern formed by the population. The match between theoretical predictions and empirical results is reasonably good.
Considerations on Artifacts of Digital Culture in English Language Teaching
Creators: name: Schildhauer, Peter
name: Gerlach, David
name: Weiser-Zurmühlen, Kristin
Publisher: name: PraxisForschungLehrer*innenBildung. Zeitschrift für Schul- und Professionsentwicklung.
Year: 2023

description: In this contribution, we present some considerations on the role digital artifacts could and should play in 21st-century language teaching. Our argument focuses on social media feeds (in particular: the Instagram feed) as a prototypical example of digital artifacts. We highlight the potentially manipulative force of the Instagram feed using the example of conspiracy theories as a case-in-point. Illustrating our argument with examples from ongoing empirical work, we suggest and elaborate on three challenges entailed by implementing social media feeds in the language classroom: They constitute a moving target due to their dynamics, inspire a false sense of security because of filter bubble as well as third-person effects and confront us with the question of “What can we do in the classroom?”. We conclude by suggesting possible components of Critical Digital Literacy as an answer to this question.
description: PraxisForschungLehrer*innenBildung. Zeitschrift für Schul- und Professionsentwicklung., Bd. 5 Nr. 3 (2023): Standards – Margins – New Horizons. Canons for 21st-century Teaching
Mitarbeiterinnen und Mitarbeiter / Équipe
Creators: name: Redaktion, Die
Publisher: name: Deutsches Forum für Kunstgeschichte (DFK Paris): Jahresbericht / Rapport annuel
Year: 2016

description: -
description: Deutsches Forum für Kunstgeschichte (DFK Paris): Jahresbericht / Rapport annuel, Jahresbericht / Rapport annuel 2014/2015
Topological mixing for some residual sets of interval exchange transformations
Creators: name: Chaika, Jon
name: Fickenscher, Jon
Publisher: name: arXiv
Year: 2013
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We show that a residual set of non-degenerate IETs on more than 3 letters is topologically mixing. This shows that there exists a uniquely ergodic topologically mixing IET. This is then applied to show that some billiard flows in a fixed direction in an L-shaped polygon are topologically mixing.
description: Update to include revisions based on referee's comments. The final publication is available at Springer via http://dx.doi.org/10.1007/s00220-014-2191-x
A política de cuidados domiciliários em instituições de solidariedade social: risco ou protecção efectiva?
Creators: name: Carvalho, Maria Irene Lopes B. De
Publisher: name: Locus Soci@l
Year: 2009

description: Este artigo pretende analisar a política de cuidados (como risco e como desafio) enquanto resposta à questão da dependência. Pretende ainda reflectir como é que, em Portugal, essa política, especialmente a de cuidados domiciliários prestados em instituições de solidariedade social, promove a participação, a protecção e a saúde das pessoas mais idosas. Dentro desta ideia geral, considera-se a noção de dependência como um processo multidimensional a ter em conta na construção da política de cuidados. A partir dos dados recolhidos numa instituição de solidariedade social especializada na prestação de cuidados no domicílio, reflecte-se o modo como esta área política responde à multidimensionalidade das situações de dependência, a partir da identificação das características dos utilizadores, dos cuidados informais familiares prestados e dos serviços formais que usufruem.
description: Locus Soci@l, No 2 (2009)
As identidades profissionais em educação de infância
Creators: name: Sarmento, Teresa
Publisher: name: Locus Soci@l
Year: 2009

description: A construção da identidade profissional requer sempre a acção directa de cada actor social, num processo de permanente relação com múltiplas condições: históricas, políticas, culturais, sociais e organizacionais. É hoje consensual que em todos os grupos profissionais nos temos que referir a identidades e não a identidade, na medida em que se sabe que não há homogeneidade na composição, nas funções, nas perspectivas, nos valores e nas atitudes de todos os membros da mesma área. Assim se passa, neste caso, com o grupo das educadoras de infância que, formadas em escolas diferentes, inseridas ou não em associações profissionais, a desenvolverem a acção profissional em contextos organizacionais diversos e com finalidades também diferentes (jardins-de-infância, centros de actividades de tempos livres, serviços de prolongamento de horário, ludotecas, pediatrias hospitalares e outros), com histórias de vida distintas, apresentam formas de ser, de pensar e de agir muito variadas. Esta diversidade, as riquezas e dificuldades que pode comportar, obrigam-nos, por isso, a reflectir o que entendemos por identidades, particularizando nas educadoras de infância. Diz-nos Dubar que “A identidade não é mais do que o resultado simultaneamente estável e provisório, individual e colectivo, subjectivo e objectivo, biográfico e estrutural, dos diversos processos de socialização que, em conjunto, constroem os indivíduos e as instituições” (1991, 105). Ao longo deste texto procurar-se-á atender às premissas desta afirmação, numa perspectiva de análise da construção das identidades das educadoras de infância. Uma análise cruzada de todas estas condições obriga-nos ao recurso de diferentes áreas do conhecimento e permite-nos aferir a complexificação crescente desta construção identitária, mantendo-se, no entanto, a centralidade do mesmo núcleo para o desenvolvimento da profissão, ou seja, a relação pedagógica com as crianças.
description: Locus Soci@l, No 2 (2009)
title: Δίκτυο Οθωμανικών οχυρώσεων του 19ου αιώνα
Creators: name: Ασημακη Ευσταθια
Publisher: name: Technical University of Crete
Year: 2014

description: Η παρούσα ερευνητική εργασία αφορά τις οχυρώσεις των Οθωμανών κατά τη διάρκεια της ύστερης Τουρκοκρατίας. Συγκεκριμένα, μελετάται το δίκτυο των Οθωμανικών οχυρώσεων  που αναπτύχθηκε με σκοπό την παρακολούθηση και κατάπνιξη των επαναστατικών κινήσεων, τόσο στην Κρήτη όσο και στον υπόλοιπο Ελλαδικό χώρο.
     Θεωρώντας την Κρήτη ως την περιοχή με τη μεγαλύτερη ανοικοδόμηση Τούρκικων οχυρών, εξετάζεται η πορεία των επαναστάσεων, κατά τη διάρκεια της Τουρκοκρατίας και εν συνεχεία, πως η τρίχρονη Κρητική Επανάσταση (1866 – 1869)  ήταν ο λόγος ανέγερσης των οθωμανικών οχυρώσεων - κουλέδων. Επίσης, παρουσιάζονται οι κουλέδες της Κρήτης και χαρτογραφούνται. Στη συνέχεια, γίνεται αναφορά στις οθωμανικές οχυρώσεις των Βαλκανίων και επικεντρωνόμαστε στο δίκτυο του Αμβρακικού Κόλπου. Τα Οθωμανικά αμυντικά έργα του Αμβρακικού, που κατασκευάστηκαν στις αρχές του 1800, παρουσιάζονται, χαρτογραφούνται και αναφέρονται τα κοινά χαρακτηριστικά με το δίκτυο οχυρώσεων στον Κόλπο της Σούδας στην Κρήτη. Στόχος της εργασίας είναι να δοθούν συμπεράσματα σύμφωνα με τους λόγους ανάπτυξης των εν λόγω οχυρών, τους τρόπους επιλογής των στρατηγικών θέσεων κατασκευής τους αλλά και συμπεράσματα ως προς τη συνολική έρευνα.
Quantum Kernel Methods for Solving Differential Equations
Creators: name: Paine, Annie E.
name: Elfving, Vincent E.
name: Kyriienko, Oleksandr
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We propose several approaches for solving differential equations (DEs) with quantum kernel methods. We compose quantum models as weighted sums of kernel functions, where variables are encoded using feature maps and model derivatives are represented using automatic differentiation of quantum circuits. While previously quantum kernel methods primarily targeted classification tasks, here we consider their applicability to regression tasks, based on available data and differential constraints. We use two strategies to approach these problems. First, we devise a mixed model regression with a trial solution represented by kernel-based functions, which is trained to minimize a loss for specific differential constraints or datasets. Second, we use support vector regression that accounts for the structure of differential equations. The developed methods are capable of solving both linear and nonlinear systems. Contrary to prevailing hybrid variational approaches for parametrized quantum circuits, we perform training of the weights of the model classically. Under certain conditions this corresponds to a convex optimization problem, which can be solved with provable convergence to global optimum of the model. The proposed approaches also favor hardware implementations, as optimization only uses evaluated Gram matrices, but require quadratic number of function evaluations. We highlight trade-offs when comparing our methods to those based on variational quantum circuits such as the recently proposed differentiable quantum circuits (DQC) approach. The proposed methods offer potential quantum enhancement through the rich kernel representations using the power of quantum feature maps, and start the quest towards provably trainable quantum DE solvers.
description: 13 pages, 6 figures, v1
Identidades, incertezas e tarefas do serviço social contemporâneo
Creators: name: Amaro, Maria Inês
Publisher: name: Locus Soci@l
Year: 2009

description: Neste artigo é discutida a identidade profissional dos assistentes sociais. Partindo-se do reconhecimento de que se está em presença de uma crise da identidade profissional, apresenta-se a dificuldade heurística (não específica, mas mais profunda no Serviço Social) do tema, apontando-se desde logo a impossibilidade de ser abordado no singular: trata-se, efectivamente, de identidades e não de identidade. Constata-se o estado de escassez de debate no seio da comunidade profissional sobre este tema e apontam-se tarefas para o Serviço Social no século XXI.
description: Locus Soci@l, No 2 (2009)
Crystal structure and Raman active lattice vibrations of magnetic topological insulators MnBi2Te4 n(Bi2Te3) (n = 0, 1, . . . , 6)
Creators: name: Amiraslanov, I. R.
name: Aliev, Z. S.
name: Askerova, P. A.
name: Alizade, E. H.
name: Aliyeva, Y. N.
name: Abdullayev, N. A.
name: Jahangirli, Z. A.
name: Otrokov, M. M.
name: Mamedov, N. T.
name: Chulkov, E. V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Further to the structure of the intrinsic magnetic topological insulators MnBi2Te4 n(Bi2Te3) with n<4, where index n is the number of quintuple Te-Bi-Te-Bi-Te building blocks inserted between the neighboring septuple Te-Bi-Te-Mn-Te-Bi-Te building blocks, the structure of the members with n=4, 5 and 6 was studied using X-ray powder diffraction. The unit cell parameters and atomic positions were calculated. The obtained and available structural data were summarized to show that the crystal structure of all members of MnBi2Te4 n(Bi2Te3) follows the cubic close packing principle, independently of the space group of the given member. Confocal Raman spectroscopy was then applied. Comparative analysis of the number, frequency, symmetry, and broadening of the vibration modes responsible for the lines in the Raman spectra of the systems with n=1,. . . ,6, as well as MnBi2Te4 (n=0) and Bi2Te3 (n=infinity) has shown that lattice dynamics of MnBi2Te4 n(Bi2Te3) with n>0 overwhelmingly dominates by the cooperative atomic displacements in the quintuple building blocks.
Profissões sociais e género: perspectivas em torno do debate sobre serviço social e profissões femininas
Creators: name: Alves, Teresa
Publisher: name: Locus Soci@l
Year: 2009

description: Nesta comunicação apresentam-se, de forma exploratória, algumas das perspectivas teóricas que se vêm afigurando como mais sugestivas para a análise do Serviço Social como profissão feminina. Essencialmente exploram-se algumas pistas teóricas sugerindo que os estereótipos de género encerram consequências para o Serviço Social, enquanto profissão fortemente marcada pela diferenciação sexual, na sua história e estatuto que se apresentam como relevantes para a compreensão da profissão na actualidade num contexto societário em que se observa uma dinâmica de reconfiguração das profissões sociais.
description: Locus Soci@l, No 2 (2009)
Turbulent Prandtl number from isotropically forced turbulence
Creators: name: Käpylä, Petri J.
name: Singh, Nishant K.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Turbulent motions enhance the diffusion of large-scale flows and temperature gradients. Such diffusion is often parameterized by coefficients of turbulent viscosity ($ν_{\rm t}$) and turbulent thermal diffusivity ($χ_{\rm t}$) that are analogous to their microscopic counterparts. We compute the turbulent diffusion coefficients by imposing large-scale velocity and temperature gradients on a turbulent flow and measuring the response of the system. We also confirm our results using experiments where the imposed gradients are allowed to decay. To achieve this, we use weakly compressible three-dimensional hydrodynamic simulations of isotropically forced homogeneous turbulence. We find that the turbulent viscosity and thermal diffusion, as well as their ratio the turbulent Prandtl number, ${\rm Pr}_{\rm t} = ν_{\rm t}/χ_{\rm t}$, approach asymptotic values at sufficiently high Reynolds and Peclét numbers. We also do not find a significant dependence of ${\rm Pr}_{\rm t}$ on the microscopic Prandtl number ${\rm Pr} = ν/χ$. These findings are in stark contrast to results from the $k-ε$ model which suggests that ${\rm Pr}_{\rm t}$ increases monotonically with decreasing ${\rm Pr}$. The current results are relevant for the ongoing debate of, for example, the nature of the turbulent flows in the very low ${\rm Pr}$ regimes of stellar convection zones.
description: 10 pages, 5 figures, submitted to JFM Rapids
Higgs decay into diphoton in the Composite Higgs Model
Creators: name: Cai, Haiying
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We explore the Higgs couplings to gauge bosons in the minimal $SO(5)/SO(4)$ 4D composite Higgs model. The pions scatterings put unitary constraints on the couplings and therefore determine the branch ratios of various Higgs decays. Through fine tuning the parameters, enhancement of Higgs to diphoton rate is possible to be achieved with the existence of vector meson fields.
description: 19 pages, and 4 figures, new form factor for H-Z-photon coupling from non diagonal gauge interaction is added in the appendix, final version
Ecstasy use and suicidal behavior among adolescents: findings from a national survey
Creators: name: Kim, Jueun
name: Fan, Bin
name: Liu, Xinhua
name: Kerner, Nancy Allison
name: Wu, Ping
Publisher: name: Columbia University
Year: 2011
Subjects: Ecstasy (Drug)
Teenagers--Suicidal behavior
Suicidal behavior--Risk factors

description: The relationship between ecstasy use and suicidal behavior among adolescents in the United States was examined. Data from the adolescent subsample (ages 12-17, N = 19,301) of the 2000 National Household Survey on Drug Abuse were used in the analyses. Information on adolescent substance use, suicidal behaviors, and related sociodemographic, family, and individual factors was obtained in the survey. The rate of past year suicide attempt among adolescents with lifetime ecstasy use was almost double that of adolescents who had used other drugs only, and nine times that of adolescents with no history of illicit drug use. In multinomial logistic regression analyses controlling for related factors, the effect of ecstasy use remained significant. Adolescent ecstasy users may require enhanced suicide prevention and intervention efforts.
Shadow thermodynamics of non-linear charged Anti-de Sitter black holes
Creators: name: Du, Yun-Zhi
name: Li, Huai-Fan
name: Zhou, Xiang-Nan
name: Guo, Wei-Qi
name: Zhao, Ren
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Non-linear interaction between the electromagnetic fields (EMF) are occurred when vacuum polarization in quantum electrodynamics (QED) happens. The field of non-linear electrodynamics which may be resulting from this interaction could have important effects on black hole physics. In this work, we investigate the relationship between the observable quantity, the shadow radius and the first-order phase transition for the non-linear charged AdS black hole in the frame of the Einstein-power-Yang-Mills (EPYM) gravity. Through the analysis, we find with a certain condition there exist the non-monotonic behaviors between the shadow radius, the horizon radius, and temperature (or pressure). And from the viewpoint of the shadow radius, the phase transition temperature is higher than that from the viewpoint of the horizon radius with the same condition. These indicate that the shadow radius can be regarded a probe to reveal the thermodynamic phase transition information of black holes. When the system is undergoing the phase transition in two cases of the different non-linear YM charge parameter values: $γ=1,~1.5$, the thermal profiles of the coexistent big and small black hole phases with the temperature are presented. Furthermore, the effects of non-linear YM charge parameter on the shadow radius and the thermal profile are also investigated.
description: arXiv admin note: substantial text overlap with arXiv:2204.01007; text overlap with arXiv:1507.04217 by other authors
Assistentes sociais e profissões sociais em Portugal: notas sobre um itinerário de pesquisa
Creators: name: Branco, Francisco
Publisher: name: Locus Soci@l
Year: 2009

description: Visa-se neste artigo, por um lado, ensaiar uma análise exploratória baseada na apresentação de um conjunto de hipóteses sobre o estado da jurisdição do Serviço Social em Portugal num itinerário analítico guiado pela sociologia das profissões e, por outro lado, apresentar, em termos gerais, a perspectiva analítica que vem sendo sustentada, por trabalhos não filiados na designada tradição americana da sociologia das profissões, da necessidade de um novo olhar sobre as profissões do campo social como requisito para apreender as dinâmicas e mutações que neste âmbito vêm ocorrendo no contexto das transformações do Estado Social e das políticas públicas em resposta à «nova questão social».
description: Locus Soci@l, No 2 (2009)
Forschungsprojekte / Les projets de recherche
Creators: name: Redaktion, Die
Publisher: name: Deutsches Forum für Kunstgeschichte (DFK Paris): Jahresbericht / Rapport annuel
Year: 2016

description: -
description: Deutsches Forum für Kunstgeschichte (DFK Paris): Jahresbericht / Rapport annuel, Jahresbericht / Rapport annuel 2014/2015
Current electroconvulsive therapy practice and research in the geriatric population
Creators: name: Kerner, Nancy Allison
name: Prudic, Joan
Publisher: name: Columbia University
Year: 2014
Subjects: Electroconvulsive therapy
Geriatric psychiatry
Psychiatry

description: Electroconvulsive therapy (ECT) is utilized worldwide for various severe and treatment-resistant psychiatric disorders. Research studies have shown that ECT is the most effective and rapid treatment available for elderly patients with depression, bipolar disorder and psychosis. For patients who suffer from intractable catatonia and neuroleptic malignant syndrome, ECT can be life saving. For elderly patients who cannot tolerate or respond poorly to medications and who are at a high risk for drug-induced toxicity or toxic drug interactions, ECT is the safest treatment option. Organic causes are frequently associated with late-life onset of neuropsychiatric conditions, such as parkinsonism, dementia and stroke. ECT has proven to be efficacious even when these conditions are present. During the next decade, research studies should focus on the use of ECT as a synergistic therapy, to enhance other biological and psychological treatments, and prevent symptom relapse and recurrence.
On the Statistical Significance of the Bulk Flow Measured by the PLANCK Satellite
Creators: name: Atrio-Barandela, F.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A recent analysis of data collected by the Planck satellite detected a net dipole at the location of X-ray selected galaxy clusters, corresponding to a large-scale bulk flow extending at least to $z\sim 0.18$, the median redshift of the cluster sample. The amplitude of this flow, as measured with Planck, is consistent with earlier findings based on data from the Wilkinson Microwave Anisotropy Probe (WMAP). However, the uncertainty assigned to the dipole by the Planck team is much larger than that found in the WMAP studies, leading the authors of the Planck study to conclude that the observed bulk flow is not statistically significant. We here show that two of the three implementations of random sampling used in the error analysis of the Planck study lead to systematic overestimates in the uncertainty of the measured dipole. Random simulations of the sky do not take into account that the actual realization of the sky leads to filtered data that have a 12% lower root-mean-square dispersion than the average simulation. Using rotations around the Galactic pole (the Z axis), increases the uncertainty of the X and Y components of the dipole and artificially reduces the significance of the dipole detection from 98-99% to less than 90% confidence. When either effect is taken into account, the corrected errors agree with those obtained using random distributions of clusters on Planck data, and the resulting statistical significance of the dipole measured by Planck is consistent with that of the WMAP results.
description: A & A, in press
title: Επανάκτηση και εναλλακτική αξιοποίηση του παράκτιου μετώπου: κατοίκηση και πολιτισμός στην υποβαθμισμένη περιοχή Κόβα της Ρόδου
Creators: name: Καζα Κατερινα
Publisher: name: Technical University of Crete
Year: 2014

description: Η παρούσα διπλωματική εργασία πραγματεύεται το σχεδιασμό ενός συγκροτήματος κτιρίων στην υποβαθμισμένη περιοχή Κόβα του νησιού της Ρόδου. Σε αυτό το κομβικό σημείο της περιοχής, η πρόταση στοχεύει μέσω των χρήσεων και του δημοσίου χώρου, να δρομολογήσει μια στροφή στη φύση της ανάπτυξης στο εν λόγω ιδιαίτερο παράκτιο τμήμα της πόλης, το οποίο με τη χωροθέτηση της υπό κατασκευή Νέας Μαρίνας Ρόδου οδεύει να παρασυρθεί από την άκριτη τουριστική ανάπτυξη, αποκόπτοντας έτσι ένα ακόμη παράκτιο τμήμα της πόλης-και κατά συνέπεια τον κάτοικο-από το παραθαλάσσιο μέτωπο. Έτσι, προς αντιστάθμιση της κατάστασης χωροθετούνται χρήσεις κοινωνικές, κατοικίας και πολιτισμού, προς το σχηματισμό ενός μικρού  "πυρήνα ενεργοποίησης", καλώντας τον κάτοικο να εισρεύσει στην περιοχή, έχοντας παράλληλα στο επίκεντρο την παραμελημένη φοιτητική κοινότητα του νησιού, η οποία παρά τον αυξανόμενο πληθυσμό της και την εναλλακτική οικονομία που μπορεί να πυροδοτήσει σε ένα νησί που αυτή βασίζεται σχεδόν αποκλειστικά στον εποχιακό τουρισμό, ολοένα περιθωριοποιείται. Στο σχεδιασμό λαμβάνονται υπόψη τα ιδιαίτερα αστικά (νέα μαρίνα, διέλευση περιφερικού δρόμου) και αρχιτεκτονικά χαρακτηριστικά της περιοχής, η οποία προσφέρεται για την ανάδειξη της σύγχρονης πλευράς, μιας κατά τα άλλα ιστορικής πόλης σαν αυτή της Ρόδου.
20 Jahre DFK Paris. Ein Forum für die Kunstgeschichte in Paris / 20 ans DFK Paris. Un forum pour l'histoire de l'art à Paris
Creators: name: Drost, Julia
name: Castor, Markus A.
name: Ebeling, Jörg
Publisher: name: Deutsches Forum für Kunstgeschichte (DFK Paris): Jahresbericht / Rapport annuel
Year: 2017

description: -
description: Deutsches Forum für Kunstgeschichte (DFK Paris): Jahresbericht / Rapport annuel, Jahresbericht / Rapport annuel 2015/2016
Bichromatic four-wave mixing and quadrature-squeezing from biexcitons in atomically thin semiconductor microcavities
Creators: name: Denning, Emil V.
name: Knorr, Andreas
name: Katsch, Florian
name: Richter, Marten
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Nonlinear optical effects such as four-wave mixing and generation of squeezed light are ubiquitous in optical devices and light sources. For new devices operating at low optical power, the resonant nonlinearity arising from the two-photon sensitive bound biexciton in a semiconductor microcavity is an interesting prospective platform. Due to the particularly strong Coulomb interaction in atomically thin semiconductors, these materials have strongly bound biexcitons and operate in the visible frequency range of the electromagnetic spectrum. To remove the strong pump laser from the generated light in optical devices or to simultaneously excite non-degenerate polaritons, a bichromatic-pump configuration with two spectrally separated pump lasers is desirable. In this paper, we theoretically investigate spontanous four-wave mixing and quadrature-squeezing in a bichromatically pumped atomically thin semiconductor microcavity. We explore two different configurations that support degenerate and non-degenerate scattering from polaritons into bound biexcitons, respectively. We find that these configurations lead to the generation strongly single- and two-mode quadrature-squeezed light.
description: Accepted in Phys. Rev. B
Caesar. Ausgew. u. komm. v. Peter Glatz
Creators: name: Wölke, Hansjörg
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Caesar. Ausgew. u. komm. v. Peter Glatz. 2. Aufl. Wien: öbv & hpt VerlagsgmbH 1999. 113 S., (Lateinlektüre aktiv!; Vertrieb in Deutschland durch Klett: ISBN 3-12- 657840-3).
description: Forum Classicum, Nr. 2 (2000): Forum Classicum
Duden. Richtiges und gutes Deutsch
Creators: name: Werner, Jürgen
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Duden. Richtiges und gutes Deutsch. 6., vollständig überarbeitete Auflage (Duden Bd. 9). Dudenverlag Mannheim usw. 2007. 1053 S. (ISBN-13: 978-3- 411-04096-4)
description: Forum Classicum, Nr. 2 (2008): Forum Classicum
title: Αξιολόγηση πιθανών προβλημάτων διασφάλισης ροής σε ένα πηγάδι παραγωγής
title: Assessment of possible flow assurance issues in a production well
Creators: name: Βαρβαντακης Μιχαηλ
Publisher: name: Technical University of Crete
Year: 2015

description: Hydrocarbon exploration becomes complicated due to recent developments in offshore, deepsea and permafrost zones. Field developments in areas never explored before introduce new issues that have to be tackled from the production engineers to achieve economic production rates. Flow assurance in pipelines and specifically hydrate formation, becomes an issue of major importance in the system design of hydrocarbon fields.
The objective of this thesis is the assessment of the hydrate forming conditions in a hydrocarbons production system when the system design parameters are varied. The first part is introductory and deals with the flow assurance issues occurring in petroleum industry operations. Subsequently, it focuses on one of the most important flow assurance issues, the hydrate formation. A review on hydrate thermodynamics and probable areas of formation in gas and oil-dominated systems is given, followed by a brief analysis on how hydrate plugs are formed. Finally a short discussion about the hydrate potential as a hydrocarbon resource is given followed by a presentation of all possible remedial applications on the hydrate problem, be it prevention or treatment.
The second part deals with hydrate formation on two hydrocarbon systems (Light Oil and Gas condensate) at two developed fields which represent an onshore arctic and a deep offshore region. A sensitivity analysis was done to study how the system parameters affect the hydrate forming conditions. For this task, PROSPER by PetEx, the industry standard production simulation software was utilized to simulate all possible scenaria. The sensitivity analysis is split into two parts. The first discusses the effect of system parameters that affect the well deliverability (VLP curve) and the second deals with the effect of two thermodynamic inhibitors in various concentrations.
 Concluding, the effect of all system parameters on the hydrate formation is given. The parameters that stand out are: the water percentage of the flow stream and the pipeline insulation. Both are equally important parameters that can deteriorate or eliminate the hydrate formation problem regardless the environmental conditions prevailing at the field development.
Classical design against hydrate formation is targeting to the avoidance of the hydrate stability region, however new methods are under development, which shift their targeting in producing the hydrate particles and further research must stand up to that task.