cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
K.-H. Leven: Geschichte der Medizin. Von der Antike bis zur Gegenwart
Creators: name: Schmitz, Dietmar
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: K.-H. Leven: Geschichte der Medizin. Von der Antike bis zur Gegenwart. Verlag: C. H. Wissen. München 2008. (ISBN 978-3-406- 56252-5).
description: Forum Classicum, Nr. 4 (2008): Forum Classicum
Cognitive training and neuroplasticity in mild cognitive impairment (COG-IT): protocol for a two-site, blinded, randomised, controlled treatment trial
Creators: name: D'Antonio, Jessica
name: Simon-Pearson, Laura
name: Goldberg, Terry E.
name: Sneed, Joel R.
name: Rushia, Sara
name: Kerner, Nancy Allison
name: Andrews, Howard F.
name: Hellegers, Caroline
name: Tolbert, Sierra
name: Perea, Elena
name: Petrella, Jeffrey
name: Doraiswamy, P. Murali
name: Devanand, Devangere P.
Publisher: name: Columbia University
Year: 2019
Subjects: Mild cognitive impairment
Neuroplasticity
Brain--Aging
Clinical trials--Methodology
Psychiatry

description: Introduction: Mild cognitive impairment (MCI) is common in older adults and represents a high-risk group for progression to Alzheimer's disease (AD). Medication trials in MCI have generally failed, but new discoveries with brain plasticity in ageing have led to the study of cognitive training as a potential treatment to improve cognitive abilities. Computerised cognitive training (CCT) involves computerised cognitive exercises that target specific cognitive abilities and neural networks to potentially improve cognitive functioning through neuroplasticity. Methods and analysis: In a two-site study (New York State Psychiatric Institute/Columbia University Medical Center and Duke University Medical Center), we will randomise 100 patients with MCI (Wechsler Memory Scale-III Logical Memory II score 0-11; Folstein Mini Mental State Examination ≥23) to home-based CCT (suite of exercises: memory, matching, spatial recognition, processing speed) or a home-based active control condition (computerised crossword puzzle training (CPT)) with 12 weeks of intensive training followed by regular booster sessions up to 78 weeks. All patients will receive standard neuropsychological and functional assessments in clinic as well as structural/functional brain MRI scans at study entry and endpoint. We will test if CCT, versus CPT, leads to improved cognitive functioning, transfers to functional ability and tasks of everyday life and impacts hippocampal volume changes and changes in the default mode network of the brain measured by resting-state functional MRI. Ethics and dissemination: The study will be conducted following ethics approval and written informed consent will be obtained from all subjects. Study results will be disseminated via publication, clinicaltrials.gov, media and conference presentations. This will be the first controlled long-term trial to evaluate the effects of home-based CCT versus computerised CPT on cognitive abilities and functional measures and neural outcomes as determined by MRI indices in patients with MCI. Positive results from trial may support further development of home-based CCT.
Novas políticas sociais novas: entre "belas" e "senãos"
Creators: name: Rodrigues, Fernanda
Publisher: name: Locus Soci@l
Year: 2008

description: Neste artigo identificam-se alguns dos traços mais comummente reconhecidos às politicas sociais após o período dos sistemas públicos de bem estar. Identificam-se as dimensões que corrigem e criam alternativas às insuficiências ou necessidades de aperfeiçoamento desse período. A par deixam-se elencadas algumas das potenciais restrições, quer nas lógicas de base quer, ainda, na timidez e carácter mínimo das medidas implementadas.
description: Locus Soci@l, No 1 (2008)
Surface defects, flavored modular differential equations and modularity
Creators: name: Zheng, Haocong
name: Pan, Yiwen
name: Wang, Yufan
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Every 4d $\mathcal{N} = 2$ SCFT $\mathcal{T}$ corresponds to an associated VOA $\mathbb{V}(\mathcal{T})$, which is in general non-rational with a more involved representation theory. Null states in $\mathbb{V}(\mathcal{T})$ can give rise to non-trivial flavored modular differential equations, which must be satisfied by the refined/flavored character of all the $\mathbb{V}(\mathcal{T})$-modules. Taking some $A_1$ theories $\mathcal{T}_{g,n}$ of class-$\mathcal{S}$ as examples, we construct the flavored modular differential equations satisfied by the Schur index. We show that three types of surface defect indices give rise to common solutions to these differential equations, and therefore are sources of $\mathbb{V}(\mathcal{T})$-module characters. These equations transform almost covariantly under modular transformations, ensuring the presence of logarithmic solutions which may correspond to characters of logarithmic modules.
description: 76 pages, 3 figures
Quantum Routing of Single Photons with Cyclic Three-Level System
Creators: name: Zhou, Lan
name: Yang, Li-Ping
name: Li, Yong
name: Sun, C. P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose an experimentally accessible single-photon routing scheme using a $\bigtriangleup$-type three-level atom embedded in quantum multi-channels composed of coupled-resonator waveguides. Via the on-demand classical field applied to the atom, the router can extract a single photon from the incident channel, and then redirect it into another. The efficient functions of perfect reflection of single photon signal in the incident channel is rooted in the coherent resonance and the existence of photonic bound states.
description: 5 pages, 3 figures
title: Time lapse seismic monitoring of steam injection for EOR projects
Creators: name: Σταθοπουλου Αικατερινη
Publisher: name: Technical University of Crete
Year: 2015

description: The current thesis is based on a time - lapse synthetic seismic reflection study of a steam injection project in Prinos field, northern Greece. The basic attempt is to investigate whether the synthetic seismic reflection data applied on the surface of the geologic section is capable of detecting changes in the reservoir model, which are provoked by the injected steam within the reservoir formations. Two seismic reflection surveys (2D) are simulated through generation algorithm based on finite differences method. Time-lapse monitoring is comprised of a baseline survey recorded before the onset of the steam injection process, when the reservoir is fully saturated with brine and oil and a monitor survey recorded after a period, when the whole reservoir is steam injected. The final time-lapse seismic section is derived from the subtraction of the two already mentioned seismic surveys. Another way to clarify whether all the reservoir layers are stimulated over their entire length by the injected steam, is to calculate the time lag of the seismic waves caused by the lower seismic velocity of the steam saturated formations. The seismic processing was conducted with the aid of MATLABTM Software.
PowerFDNet: Deep Learning-Based Stealthy False Data Injection Attack Detection for AC-model Transmission Systems
Creators: name: Yin, Xuefei
name: Zhu, Yanming
name: Xie, Yi
name: Hu, Jiankun
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cryptography and Security (cs.CR)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Recent studies have demonstrated that smart grids are vulnerable to stealthy false data injection attacks (SFDIAs), as SFDIAs can bypass residual-based bad data detection mechanisms. The SFDIA detection has become one of the focuses of smart grid research. Methods based on deep learning technology have shown promising accuracy in the detection of SFDIAs. However, most existing methods rely on the temporal structure of a sequence of measurements but do not take account of the spatial structure between buses and transmission lines. To address this issue, we propose a spatiotemporal deep network, PowerFDNet, for the SFDIA detection in AC-model power grids. The PowerFDNet consists of two sub-architectures: spatial architecture (SA) and temporal architecture (TA). The SA is aimed at extracting representations of bus/line measurements and modeling the spatial structure based on their representations. The TA is aimed at modeling the temporal structure of a sequence of measurements. Therefore, the proposed PowerFDNet can effectively model the spatiotemporal structure of measurements. Case studies on the detection of SFDIAs on the benchmark smart grids show that the PowerFDNet achieved significant improvement compared with the state-of-the-art SFDIA detection methods. In addition, an IoT-oriented lightweight prototype of size 52 MB is implemented and tested for mobile devices, which demonstrates the potential applications on mobile devices. The trained model will be available at \textit{https://github.com/HubYZ/PowerFDNet}.
O discurso histórico sobre o serviço social: uma perspectiva analítica sobre o quadro de produção científica em Portugal (1987-2007)
Creators: name: Santos, Maria Isabel
Publisher: name: Locus Soci@l
Year: 2008

description: O trabalho desenvolvido constitui um estudo exploratório acerca do discurso histórico sobre o Serviço Social em Portugal, a partir do quadro de produção científica nacional, entre 1987 e 2007. O discurso em causa (modo de escrita e reflexão sobre a história) não resulta do trabalho produzido pelos historiadores em geral, mas de estudos desenvolvidos por assistentes sociais que indagaram historicamente a sua profissão. O estudo realizado permitiu evidenciar a necessidade de estabilizar um quadro teórico de referência sobre a natureza do Serviço Social, levando-nos a questionar se a própria história do Serviço Social não poderá carrilar elementos para o aprofundamento desta reflexão.
description: Locus Soci@l, No 1 (2008)
Analytic theory for the dynamics of wide quantum neural networks
Creators: name: Liu, Junyu
name: Najafi, Khadijeh
name: Sharma, Kunal
name: Tacchino, Francesco
name: Jiang, Liang
name: Mezzacapo, Antonio
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Parameterized quantum circuits can be used as quantum neural networks and have the potential to outperform their classical counterparts when trained for addressing learning problems. To date, much of the results on their performance on practical problems are heuristic in nature. In particular, the convergence rate for the training of quantum neural networks is not fully understood. Here, we analyze the dynamics of gradient descent for the training error of a class of variational quantum machine learning models. We define wide quantum neural networks as parameterized quantum circuits in the limit of a large number of qubits and variational parameters. We then find a simple analytic formula that captures the average behavior of their loss function and discuss the consequences of our findings. For example, for random quantum circuits, we predict and characterize an exponential decay of the residual training error as a function of the parameters of the system. We finally validate our analytic results with numerical experiments.
description: 37 pages, many figures. v2, v3: adding learning supervised perspectives and new results, close to published version
Os campos paradigmáticos do serviço social: proposta para uma categorização das teorias em presença
Creators: name: Amaro, Maria Inês
Publisher: name: Locus Soci@l
Year: 2008

description: O presente artigo prossegue um objectivo de compreensão e sistematização da informação sobre o que pode ser entendido como “as teorias do Serviço Social”. Com esse propósito faz-se uma proposta de categorização de quatro campos paradigmáticos em Serviço Social: funcionalismo, interpretativismo, estruturalismo e humanismo. A partir desta grelha inscrevem-se e analisam-se as teorias do Serviço Social, com destaque para o Serviço Social estrutural e crítico. Apresenta-se por fim a teoria da correlação de forças como uma abordagem ao Serviço Social que tenta superar as dicotomias da acção/estrutura e da ordem/conflito.
description: Locus Soci@l, No 1 (2008)
A investigação em serviço social em Portugal: trajectórias e perspectivas
Creators: name: Branco, Francisco
Publisher: name: Locus Soci@l
Year: 2008

description: Esta comunicação apresenta uma visão geral da investigação em serviço social em Portugal nas duas últimas décadas, nas suas características mais salientes, desafios e perspectivas de desenvolvimento, considerando quer a questão da investigação no plano da formação inicial em serviço social, quer no domínio da pós-graduação académica, quer ainda da pesquisa organizada em centros de investigação.
description: Locus Soci@l, No 1 (2008)
Investigação em serviço social no Portugal contemporâneo. Paradoxos e desafios
Creators: name: Martins, Alcina
Publisher: name: Locus Soci@l
Year: 2008

description: The article approaches Social Work research in contemporary Portugal, after the process of qualification and of acknowledgement of the degree (1989). The implications of this process are analyzed, looking at research as an inner part of Social Work education, of professional skills, which outcomes are knowledge production and creation of new organizations of the professional category, namely its first R&D unit – CPIHTS. The expansion movement on Social Work education is located from the nineties onwards, in private and public sector, the research component of the first and master degree is signaled, and in this picture a process of deregulation of the courses and a trend for the disqualification brought by the Bologna Process is pointed out. Finally, the article analyzes the challenges and paradoxes of Social Work research departing from the balance of the last decade.
description: Locus Soci@l, No 1 (2008)
John Fahey
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2019

description: A cover of "Blowin' In the Wind" plays. "Blowin' In the Wind" by Bob Dylan plays. "Bourgeois Blues" by Leadbelly plays. "Highway 61 Revisited" by Johnny Winter plays. Fass reads the liner notes from Blind Joe Death by John Fahey, after which he plays the album.
title: Συμβολή των σεισμικών και ηλεκτρικών μεθόδων στον γεωτεχνικό χαρακτηρισμό των γεωλογικών σχηματισμών έδρασης των επιταχυνσιογράφων του Ε.Δ.Ε. στο Νομό Ρεθύμνου
Creators: name: Γεωργιλας Κωνσταντινος
Publisher: name: Technical University of Crete
Year: 2015

description: Η παρούσα διπλωματική εργασία ολοκληρώνει τον κύκλο των γεωφυσικών ερευνών που πραγματοποιήθηκαν στο Νομό Ρεθύμνου στα πλαίσια των γεωτεχνικών – τεχνικογεωλογικών εργασιών υπαίθρου για όλες τις επιλεγμένες θέσεις έρευνας.
Στόχος της εργασίας είναι ο προσδιορισμός και η συλλογή σεισμολογικών δεδομένων με σκοπό την συσχέτιση τους με δεδομένα γεωφυσικών διασκοπήσεων. Οι μέθοδοι που χρησιμοποιήθηκαν είναι  ηλεκτρική τομογραφία, σεισμική τομογραφία, MASW, Refraction – Microtremor.
Αρχικά παρουσιάζονται τα αποτελέσματα της γεωφυσικής μελέτης στο τμήμα του Νομού Ρεθύμνου με την χρήση των μεθόδων της ηλεκτρικής τομογραφίας, πολυκάναλης ανάλυσης επιφανειακών κυμάτων και Reflaction – Microtremor. Επίσης περιγράφονται οι βασικές αρχές της μεθόδου της σεισμικής διάθλασης καθώς και η μέθοδος της σεισμικής τομογραφίας. Στην συνέχεια αφού πραγματοποιήθηκαν οι επεξεργασίες των δεδομένων με τα προγράμματα SeisImager και EarthImager προέκυψαν οι αντίστοιχες σεισμικές και γεωηλεκτρικές τομές.
Τέλος παρουσιάζονται και αξιολογούνται τα αποτελέσματα επεξεργασίας των σεισμικών και γεωηλεκτρικών τομών. Το κυριότερο συμπέρασμα της εργασίας είναι ότι από την ερμηνεία  των συνδυαστικών τομών απεικονίζονται τρία σεισμικά στρώματα, το πρώτο αντιστοιχεί σε Τεταρτογενείς αποθέσεις (ψηφίδες, χάλικες και αραιές κροκάλες), το δεύτερο σε μάργες του Νεογενούς και το τρίτο σε στιφρές μάργες.
Neural Networks for Nuclear Reactions in MAESTROeX
Creators: name: Fan, Duoming
name: Willcox, Donald E.
name: DeGrendele, Christopher
name: Zingale, Michael
name: Nonaka, Andrew
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We demonstrate the use of neural networks to accelerate the reaction steps in the MAESTROeX stellar hydrodynamics code. A traditional MAESTROeX simulation uses a stiff ODE integrator for the reactions; here we employ a ResNet architecture and describe details relating to the architecture, training, and validation of our networks. Our customized approach includes options for the form of the loss functions, a demonstration that the use of parallel neural networks leads to increased accuracy, and a description of a perturbational approach in the training step that robustifies the model. We test our approach on millimeter-scale flames using a single-step, 3-isotope network describing the first stages of carbon fusion occurring in Type Ia supernovae. We train the neural networks using simulation data from a standard MAESTROeX simulation, and show that the resulting model can be effectively applied to different flame configurations. This work lays the groundwork for more complex networks, and iterative time-integration strategies that can leverage the efficiency of the neural networks.
John Jacob Niles, Both Directions
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2019
Subjects: Folk music
Ballads

description: A man (John Jacob Niles) discusses ballads and folk music. He plays "Barbara Allen," "Black is the Color of My True Love's Hair," "The wife wrapped up in a wether's skin," "The frog and the mouse," "The Lady and the Gypsy." The year is 1961
Social work research and evaluation: the research-minded practitioner
Creators: name: Everitt, Angela
Publisher: name: Locus Soci@l
Year: 2008

description: The paper is centred in three intertwined issues concerning Social Work research: the research-minded practitioner; evaluating for good practice; researching as a practitioner. In the attempt to shape the development of social work research, relations between theory and practice were analyzed, taking the experience of practitioners in education as influential for Social Work. The processes advocated here are complex and not likely to have easy answers or procedural manuals. Reflective critical questioning, tentativeness and uncertainty are critical features for a Social Work researcher
description: Locus Soci@l, No 1 (2008)
Mathematics, Risk, and Messy Survey Data
Creators: name: Thompson, Kristi
name: Sullivan, Carolyn
Publisher: name: Zenodo
Year: 2021

description: Data de-identification is a fraught and somewhat poorly understood area beset with intimidating ethical implications and oddly named mathematical algorithms. In addition, data needing assessment may be poorly documented and difficult to work with. Finally, data librarians are often not trained in data risk assessment, yet find themselves in the position of deciding whether a dataset can or should be shared openly. This session will introduce key topics in data de-identification and risk assessment, including various population heuristics, k-anonymity, and related concepts. Using these concepts the authors cane up with a workflow to clean, assess, and eventually publish some high-risk, neglected government survey datasets.
Tradition als Motor
Creators: name: Werle, Dirk
Publisher: name: Ruperto Carola
Year: 2016

description: Tradition ist ein wesentlicher Antriebsfaktor der Literaturgeschichte. Sie ist „Go!“ und nicht „Stop!“, denn auf ihr beruht die Dynamik, die die Literaturgeschichte vorantreibt. Ein neues Promotionskolleg an der Universität Heidelberg untersucht vielfältige Formen des literarischen Umgangs mit Tradition und erprobt dabei die Tragfähigkeit unseres Traditionsbegriffs.
description: Ruperto Carola, Nr. 9 (2016): Stop & Go
Asymptotic structure of Carrollian limits of Einstein-Yang-Mills theory in four spacetime dimensions
Creators: name: Fuentealba, Oscar
name: Henneaux, Marc
name: Salgado-Rebolledo, Patricio
name: Salzer, Jakob
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, three things are done. First, we study from an algebraic point of view the infinite-dimensional BMS-like extensions of the Carroll algebra relevant to the asymptotic structure of the electric and magnetic Carrollian limits of Einstein gravity. In the course of this study we exhibit by "Carroll-Galileo duality" a new infinite-dimensional BMS-like extension of the Galilean algebra and of its centrally extended Bargmann algebra. Second, we consider the electric Carrollian limit of the pure Einstein theory and indicate that more flexible boundary conditions than the ones that follow from just taking the limit of the Einsteinian boundary conditions are actually consistent. These boundary conditions lead to a bigger asymptotic symmetry algebra that involves spatial supertranslations depending on three functions of the angles (instead of one). Third, we turn to the Carrollian limit of the coupled Einstein-Yang-Mills system. An infinite-dimensional color enhancement of the gauge algebra is found in the electric Carrollian limit of the Yang-Mills field, which allows angle-dependent Yang-Mills transformations at spatial infinity, not available in the Einstein-Yang-Mills case prior to taking the Carrollian electric limit. This enhancement does not occur in the magnetic limit.
description: 34 pages, no figures
Hierarchies of Critical Points of a Landau-de Gennes Free Energy on Three-Dimensional Cuboids
Creators: name: Shi, Baoming
name: Han, Yucen
name: Yin, Jianyuan
name: Majumdar, Apala
name: Zhang, Lei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We investigate critical points of a Landau-de Gennes (LdG) free energy in three-dimensional (3D) cuboids, that model nematic equilibria. We develop a hybrid saddle dynamics-based algorithm to efficiently compute solution landscapes of these 3D systems. Our main results concern (a) the construction of 3D LdG critical points from a database of 2D LdG critical points and (b) studies of the effects of cross-section size and cuboid height on solution landscapes. In doing so, we discover multiple-layer 3D LdG critical points constructed by stacking 3D critical points on top of each other, novel pathways between distinct energy minima mediated by 3D LdG critical points and novel metastable escaped solutions, all of which can be tuned for tailor-made static and dynamic properties of confined nematic liquid crystal systems in 3D.
Social work education and research: present experiences and tendencies in Finland and other Nordic countries
Creators: name: Seppänen, Marjaana
Publisher: name: Locus Soci@l
Year: 2008

description: The aim of this paper is to give an overall description of the Social Work research trends in Finland and other Nordic countries, departing from the hypothesis that the education system in the field of Social Work in the Nordic countries is a key to understand those research tendencies. This description puts an emphasis on the situation in Finland and Sweden, given that these two countries have the longest research traditions in social work. One of the most critical debates concerning Social Work research is the one of the relationship between theory and practice. It is argued that this duality can be overcome through a new research approach which embodies one of the strongest research trends in Finland: the practice research. Along with that model, evaluation research and “what works” focused research can be pointed out as the main current research tendencies on Social Work in Finland.
description: Locus Soci@l, No 1 (2008)
Association of Obstructive Sleep Apnea with Episodic Memory and Cerebral Microvascular Pathology: A Preliminary Study
Creators: name: Kerner, Nancy Allison
name: Roose, Steven P.
name: Pelton, Gregory H.
name: Ciarleglio, Adam J.
name: Scodes, Jennifer
name: Lentz, Cody
name: Sneed, Joel R.
name: Devanand, Devangere P.
Publisher: name: Columbia University
Year: 2017
Subjects: Sleep apnea syndromes
Memory
Depression, Mental
Mild cognitive impairment
White matter
Neurology

description: Objectives: To evaluate the impact of obstructive sleep apnea (OSA) on neurocognitive function and brain morphology in older adults with depression and cognitive impairment. Methods: We prospectively screened OSA with the STOP-Bang questionnaire in the last 25 patients enrolled into the Donepezil Treatment of Cognitive Impairment and Depression (DOTCODE) trial. High and low probability of OSA were defined as a STOP-Bang score of ≥5 (h-OSA) and of <5 (l-OSA), respectively. Baseline magnetic resonance imaging (MRI) was used to evaluate brain morphology. The initial 16 weeks of antidepressant treatment were part of the DOTCODE trial. Results: After 16 weeks of antidepressant treatment, the h-OSA group performed significantly worse on the Selective Reminding Test delayed recall task than the l-OSA group, controlling for baseline performance (F = 19.1, df = 1,22, p < 0.001). In 19 of 25 participants who underwent brain MRI, the h-OSA group had significantly greater volumes of MRI hyperintensities in deep white matter, periventricular white matter, and subcortical gray matter compared with the l-OSA group. There was no significant association between OSA and hippocampal or entorhinal cortex volumes in our sample, even after controlling for intracranial volume. Conclusions: OSA is associated with impaired verbal episodic memory and microvascular damage in older adults with depression and cognitive impairment. One possibility is that by contributing to cerebral microvascular damage, OSA may exacerbate progressive memory decline.
title: Ανάπτυξη και προσομοίωση τεχνικών βελτιστοποίησης και αποθήκευσης ενέργειας για τη μεγιστοποίηση της διείσδυσης τεχνολογιών Ανανεώσιμων Πηγών Ενέργειας (ΑΠΕ) στο αυτόνομο νησί της Μήλου
title: Development and simulation of optimization and energy storage techniques for the maximization of the renewable sources penetration in the autonomous island of Milos
Creators: name: Μαυρογιαννη Αμαλια
Publisher: name: Technical University of Crete
Year: 2019

description: Σκοπός αυτής εδώ της εργασίας είναι η μελέτη του νησιού της Μήλου ως προς το ενεργειακό του ενδιαφέρον. Αρχικά θα εξεταστεί την ήδη υπάρχουσα λειτουργία της ως ένα αυτόνομο νησί που είναι. Πάνω σε αυτήν τη μελέτη προσομοιώνοντας το υπάρχον σύστημα  θα εξετάσουμε το κόστος λειτουργίας αλλά και στοιχεία όπως είναι ο σωστός τρόπος λειτουργίας αλλά και πως λειτουργεί στην πραγματικότητα ένα τέτοιο σύστημα.
           Επιπλέον, θα θεωρηθούν τρία βασικά σενάρια ανάπτυξης της Μήλου, τα οποία επιμέρους θα έχουν επιπλέον ανάπτυξη ως προς τις δυνατότητες τους. Τα τρία αυτά σενάρια είναι η διασύνδεση της Μήλου με την ηπειρωτική Ελλάδα σε συνδυασμό με την γεωθερμία, η προσθήκη ΑΠΕ σε συνδυασμό με αποθήκευση ενέργειας και τέλος ο συνδυασμός μορφών ΑΠΕ με καλώδιο διασύνδεσης αλλά και την γεωθερμία. Οτιδήποτε αναφέρεται σε μορφή αποθήκευσης και ΑΠΕ υπάρχουν τρεις συνδυασμοί οι οποίοι είναι ανάλογοι με το μέγεθος της ζήτησης της ηλεκτρικής ενέργειας του νησιού. Τέλος μετά την υλοποίηση των υπολογισμών θα βρεθεί το αποδοτικότερο σενάριο όσων αφορά το κόστος λειτουργίας, την επιβάρυνση του περιβάλλοντος αλλά και το κόστος κατασκευής.
          Η υλοποίηση και οι υπολογισμοί θα γίνουν με το πρόγραμμα MATPOWER.  Η εργασία αυτή στηρίζεται σε πραγματικά στοιχεία ως προς τις υπάρχουσες εγκαταστάσεις αλλά και τα στοιχεία ζήτησης ηλεκτρικής ενέργειας είναι τα πραγματικά δεδομένα από το έτος 2014 της Μήλου.
Early results from GLASS-JWST VIII: An Extremely Magnified Blue Supergiant Star at Redshift 2.65 in the Abell 2744 Cluster Field
Creators: name: Chen, Wenlei
name: Kelly, Patrick L.
name: Treu, Tommaso
name: Wang, Xin
name: Roberts-Borsani, Guido
name: Keen, Allison
name: Windhorst, Rogier A.
name: Zhou, Rui
name: Bradac, Marusa
name: Brammer, Gabriel
name: Strait, Victoria
name: Broadhurst, Tom J.
name: Diego, Jose M.
name: Frye, Brenda L.
name: Meena, Ashish K.
name: Zitrin, Adi
name: Pascale, Massimo
name: Castellano, Marco
name: Marchesini, Danilo
name: Morishita, Takahiro
name: Yang, Lilan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report the discovery of an extremely magnified star at redshift $z=2.65$ in James Webb Space Telescope (JWST) NIRISS pre-imaging of the Abell 2744 galaxy-cluster field. The star's background host galaxy lies on a fold caustic of the foreground lens, and the cluster creates a pair of images of the region close to the lensed star. We identified the bright transient in one of the merging images at a distance of $\sim 0.15"$ from the critical curve, by subtracting the JWST F115W and F150W imaging from coadditions of archival Hubble Space Telescope (HST) F105W and F125W images and F140W and F160W images, respectively. Since the time delay between the two images should be only hours, the transient must be the microlensing event of an individual star, as opposed to a luminous stellar explosion which would persist for days to months. Analysis of individual exposures suggests that the star's magnification is not changing rapidly during the observations. From photometry of the point source through the F115W, F150W, and F200W filters, we identify a strong Balmer break, and modeling allows us to constrain the star's temperature to be approximately 7,000--12,000 K.
description: 10 pages, 3 figures, submitted to ApJL
Leading correction to the local density approximation for exchange in large-$Z$ atoms
Creators: name: Argaman, Nathan
name: Redd, Jeremy
name: Cancio, Antonio C.
name: Burke, Kieron
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The large-$Z$ asymptotic expansion of atomic energies has been useful in determining exact conditions for corrections to the local density approximation in density functional theory. The correction for exchange is fit well with a leading $Z \ln Z$ term, and we find its coefficient numerically. The gradient expansion approximation also has such a term, but with a smaller coefficient. Analytic results in the limit of vanishing interaction with hydrogenic orbitals (a Bohr atom) lead to the conjecture that the coefficients are precisely 2.7 times larger than their gradient expansion counterparts, yielding an analytic expression for the exchange-energy correction which is accurate to $\sim 5\%$ for all $Z$.
description: Published version. 6 pages, 3 figures + 5 page supplement
title: Метод тензорных полей в теории линейного отклика
Creators: name: Зубков, Виктор
name: Майфат, Денис
name: Яшкин, Кирилл
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2022

description: Предложен новый метод вычисления функций распределения, характеризующих степень неоднородности макроскопических сред. Введенные функции распределения строятся на основе процедуры сглаживания по определенному объему, величину которого можно выбирать достаточно произвольно, в зависимости от типа поставленной задачи. Показано, что функции распределения могут быть выражены в терминах локальных тензорных полей, использование которых упрощает процедуру замыкания иерархии кинетических уравнений благодаря прозрачному физическому смыслу тензорных полей. На основе предложенного метода рассмотрена задача линейного отклика и получено аналитическое выражение для реакции локальной плотности среды на малое внешнее механическое возмущение. Показано, что полученное выражение для распределения плотности совпадает с результатом расчетов, проведенных на основе производящего функционала в эргодическом приближеннии Вейля.
Die Projekte der Stipendiatinnen und Stipendiaten / Présentation des projets des boursiers
Creators: name: Redaktion, Die
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
Obstructive Sleep Apnea is Linked to Depression and Cognitive Impairment: Evidence and Potential Mechanisms
Creators: name: Kerner, Nancy Allison
name: Roose, Steven P.
Publisher: name: Columbia University
Year: 2016
Subjects: Sleep apnea syndromes
Depression, Mental
Mild cognitive impairment
Dementia
Anoxemia
Cerebrovascular disease

description: Obstructive sleep apnea (OSA) is highly prevalent but very frequently undiagnosed. OSA is an independent risk factor for depression and cognitive impairment/dementia. Herein the authors review studies in the literature pertinent to the effects of OSA on the cerebral microvascular and neurovascular systems and present a model to describe the key pathophysiologic mechanisms that may underlie the associations, including hypoperfusion, endothelial dysfunction, and neuroinflammation. Intermittent hypoxia plays a critical role in initiating and amplifying these pathologic processes. Hypoperfusion and impaired cerebral vasomotor reactivity lead to the development or progression of cerebral small vessel disease (C-SVD). Hypoxemia exacerbates these processes, resulting in white matter lesions, white matter integrity abnormalities, and gray matter loss. Blood-brain barrier (BBB) hyperpermeability and neuroinflammation lead to altered synaptic plasticity, neuronal damage, and worsening C-SVD. Thus, OSA may initiate or amplify the pathologic processes of C-SVD and BBB dysfunction, resulting in the development or exacerbation of depressive symptoms and cognitive deficits. Given the evidence that adequate treatment of OSA with continuous positive airway pressure improves depression and neurocognitive functions, it is important to identify OSA when assessing patients with depression or cognitive impairment. Whether treatment of OSA changes the deteriorating trajectory of elderly patients with already-diagnosed vascular depression and cognitive impairment/dementia remains to be determined in randomized controlled trials.
Ionization rate and plasma dynamics at 3.9 micron femtosecond photoionization of air
Creators: name: Patel, Adam
name: Gollner, Claudia
name: Jutas, Rokas
name: Shumakova, Valentina
name: Shneider, Mikhail N.
name: Pugzlys, Audrius
name: Baltuska, Andrius
name: Shashurin, Alexey
Publisher: name: arXiv
Year: 2022
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The introduction of mid-IR optical parametric chirped pulse amplifiers (OPCPAs) has catalyzed interest in multi-millijoule, infrared femtosecond pulse-based filamentation. As tunneling ionization is a fundamental first stage in these high-intensity laser-matter interactions, characterizing the process is critical to understand derivative topical studies on femtosecond filamentation and self-focusing. Here, we report constructive-elastic microwave scattering-based measurements of total electron count, electron number densities, and photoionization rates generated by 3.9 micron femtosecond mid-infrared tunneling ionization of atmospheric air. Consequently, we determine photoionization rates in the range of 5.0x10$^{8}$-6.1x10$^{9}$ s$^{-1}$ for radiation intensities 1.3x10$^{13}$-1.9x10$^{14}$ W/cm$^{2}$, respectively. The proposed approach paves the wave to precisely tabulate photoionization rates in mid-IR for broad range of intensities and gas types and to study plasma dynamics at mid-IR filamentation.
Full halo coronal mass ejections: Do we need to correct the projection effect in terms of velocity?
Creators: name: Shen, Chenglong
name: Wang, Yuming
name: Pan, Zonghao
name: Zhang, Min
name: Ye, Pinzhong
name: Wang, S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The projection effect is one of the biggest obstacles in learning the real properties of coronal mass ejections (CMEs) and forecasting their geoeffectiveness. To evaluate the projection effect, 86 full halo CMEs (FHCMEs) listed in the CDAW CME catalog from 2007 March 1 to 2012 May 31 are investigated. By applying the Graduated Cylindrical Shell (GCS) model, we obtain the de-projected values of the propagation velocity, direction and angular width of these FHCMEs, and compare them with the projected values measured in the plane-of-sky. Although these CMEs look full halo in the view angle of SOHO, it is found that their propagation directions and angular widths could vary in a large range, implying projection effect is a major reason causing a CME being halo, but not the only one. Furthermore, the comparison of the de-projected and projected velocities reveals that most FHCMEs originating within 45$^\circ$ of the Sun-Earth line with a projected speed slower than 900 km s$^{-1}$ suffer from large projection effect, while the FHCMEs originating far from the vicinity of solar disk center or moving faster than 900 km s$^{-1}$ have small projection effect. The results suggest that not all of FHCMEs need to correct projection effect for their velocities.
description: 8 pages, 8 figures, Submitted to JGR
title: Distributed (network) sequence detection for batteryless Internet of Things (IoT)
title: Κατανεμημένη (δικτυακή) ανίχνευση ακολουθιών για το Διαδίκτυο των Πραγμάτων χωρίς μπαταρία
Creators: name: Ουρουτζογλου Μιχαηλ
Publisher: name: Technical University of Crete
Year: 2019

description: Batteryless Gen2 RFID and other Internet-Of-Things (IoT) tags communicate via means of reflection radio, i.e., backscattering. This is achieved by alternating the antenna of the tag between two different loads/states, one for RF energy reflection, and one for RF energy harvesting. Since the tag is passive, i.e., batteryless, it needs to ensure that 50% of the time, its antenna terminates in the harvesting state. This is possible with the use of line codes like Miller 2/4/8. However, line codes ensure powering in the case that the tag can be powered in the first place. Considering the low RF harvesting sensitivity of contemporary tags, the illuminating source needs to be very close (order of a few meters) to the tag in order to power it. The problem of bringing the illuminator closer to the tags has troubled the research community, inspiring the use of multiple expensive RF coaxial cables, amplifiers and multiplexers, or other monostatic front-ends wired to baseband processing units. This work provides a multistatic RFID interrogating solution, based on Ethernet-connected software defined radios (SDRs). However, this multistatic proposal raises important challenges, e.g., carrier frequency
offset (CFO) and timing constraints, not highlighted in existing monostatic setups. Most importantly, with the introduction of CFO, coherent detection faces performance issues. This work addresses the above challenges and offers a robust, low-complexity and high-performance noncoherent sequence detection algorithm, that reliably detects the backscattered data. The proposed linear complexity Miller 2/4/8 sequence detection algorithm performs near-optimally (in terms of bit error rate), even compared to ideal coherent sequence detection. It is experimentally shown with commercial Gen2 RFID tags that the proposed architecture is able to both extend the reading range (reader-to-illuminator ≥ 30 m), as well as cover a large area with inexpensive SDRs and Ethernet infrastructure (instead of expensive RF cables). Thus, a robust, low-cost, high-performance Ethernet-based multistatic RFID interrogation setup is offered that could potentially inspire the convergence of contemporary e.g., LAN) or future (e.g., cellular) network infrastructure with the RFID industry.
Nationale Vergangenheit und gemeinsame Geschichte. Das Aufkommen der Genremalerei mit historischen Sujets und ihre länderübergreifende Dimension in Frankreich, Deutschland und Italien in der ersten Hälfte des 19. Jahrhunderts / Passé national et histoire partagée. L'émergence de la peinture de genre à sujets historiques et sa dimension transnationale entre la France, l'Allemagne et l'Italie pendant la première moitié du XIXe siècle
Creators: name: Deneer, Eveline
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
Das Weltgerichtsportal der Kathedrale von Reims. Konstruktion - Rezeption - Repräsentation / Le portail du Jugement dernier de la cathédrale de Reims. Construction - réception - représentation
Creators: name: Huppertz, Lukas
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
The evolution of the galaxy UV luminosity function at redshifts z ~ 8-15 from deep JWST and ground-based near-infrared imaging
Creators: name: Donnan, C. T.
name: McLeod, D. J.
name: Dunlop, J. S.
name: McLure, R. J.
name: Carnall, A. C.
name: Begley, R.
name: Cullen, F.
name: Hamadouche, M. L.
name: Bowler, R. A. A.
name: Magee, D.
name: McCracken, H. J.
name: Milvang-Jensen, B.
name: Moneti, A.
name: Targett, T.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We reduce and analyse the available James Webb Space Telescope (JWST) ERO and ERS NIRCam imaging (SMACS0723, GLASS, CEERS) in combination with the latest deep ground-based near-infrared imaging in the COSMOS field (provided by UltraVISTA DR5) to produce a new measurement of the evolving galaxy UV luminosity function (LF) over the redshift range $z = 8 - 15$. This yields a new estimate of the evolution of UV luminosity density ($ρ_{\rm UV}$), and hence cosmic star-formation rate density ($ρ_{\rm SFR}$) out to within $< 300$\, Myr of the Big Bang. Our results confirm that the high-redshift LF is best described by a double power-law (rather than a Schechter) function up to $z\sim10$, and that the LF and the resulting derived $ρ_{\rm UV}$ (and thus $ρ_{\rm SFR}$), continues to decline gradually and steadily up to $z\sim15$ (as anticipated from previous studies which analysed the pre-existing data in a consistent manner to this study). We provide details of the 61 high-redshift galaxy candidates, 47 of which are new, that have enabled this new analysis. Our sample contains 6 galaxies at $z \ge 12$, one of which appears to set a new redshift record as an apparently robust galaxy candidate at $z \simeq 16.4$, the properties of which we therefore consider in detail. The advances presented here emphasize the importance of achieving high dynamic range in studies of early galaxy evolution, and re-affirm the enormous potential of forthcoming larger JWST programmes to transform our understanding of the young Universe.
description: 28 pages, 4 figures in main manuscript, accepted for publication in MNRAS. Updated zero-point corrections noted in Appendix C
Social work research development in the United States
Creators: name: Nichols-Casebolt, Ann
Publisher: name: Locus Soci@l
Year: 2008

description: This article summarizes and analyzes the outcomes of the recommendations extracted from the Plan for Research Development, produced in 1991 by a Task Force on Social Work Research created by the National Institute of Mental Health. The Plan responded to the claim of the profession identifying a crisis in social work research, due to the fact that very little time was spent on research to improve social work services and that less than ½ of 1% of members of the National Association of Social Workers – the largest professional social work organization - identified themselves as researchers. Almost 20 years later, it is today considered that the crisis has abated, but has not been eliminated. There is a continuing need for capacity building as well as dissemination research activities.
description: Locus Soci@l, No 1 (2008)
Probing phonon-driven symmetry alterations in graphene via high-harmonic spectroscopy
Creators: name: Rana, Navdeep
name: Dixit, Gopal
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: High-harmonic spectroscopy has become an essential ingredient in probing various ultrafast electronic processes in solids with sub-cycle temporal resolution. Despite its immense importance, sensitivity of high-harmonic spectroscopy to phonon dynamics in solids is not well known. This work addresses this critical question and demonstrates the potential of high-harmonic spectroscopy in probing intertwined phonon-electron dynamics in solids. A pump pulse excites in-plane optical phonon modes in monolayer graphene and a circularly polarised pulse is employed to probe the excited phonon dynamics that generates higher-order harmonics. We show that the coherent phonon dynamics alters the dynamical symmetry of graphene with the probe pulse and leads the generations of the symmetry-forbidden harmonics. Moreover, sidebands associated with the prominent harmonic peaks are generated as a result of the coherent dynamics. It is found that the symmetries and the characteristic timescale of the excited phonon mode determine the polarisation and positions of these sidebands. Present work opens an avenue in time-resolved probing of phonon-driven processes and dynamical symmetries in solids with sub-cycle temporal resolution.
description: 15 pages, 4 figures
Efficient atomic clocks operated with several atomic ensembles
Creators: name: Borregaard, Johannes
name: Sørensen, Anders S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Atomic clocks are typically operated by locking a local oscillator (LO) to a single atomic ensemble. In this article we propose a scheme where the LO is locked to several atomic ensembles instead of one. This results in an exponential improvement compared to the conventional method and provides a stability of the clock scaling as $(αN)^{-m/2}$ with $N$ being the number of atoms in each of the $m$ ensembles and $α$ is a constant depending on the protocol being used to lock the LO
description: 10 pages, 8 figures