cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Iodocyclopropanes : Stereocontrolled preparation and uses in organic synthesis
Creators: name: Coish, Philip Donald Graham
Publisher: name: University of British Columbia
Year: 2009

description: The thesis is divided into three sections. Section 1 describes the stereoselective preparation of 2- and 3-iodo-2-alken-l-ols by a variety of methods and the cyclopropanation of these alkenyl iodides using the Wittig-Furukawa zinc reagent, (ClCH₂)₂Zn, derived from ClCH₂I and Et₂Zn. Cyclopropanation employing this reagent in ClCH₂CH₂Cl following the procedure of Denmark afforded highly functionalized iodocyclopropanes in good to excellent yields (13 examples). The method represents a novel preparation of functionalized iodocyclopropanes. For example, reaction of 26a with (ClCH₂)₂Zn in ClCH₂CH₂Cl resulted in smooth conversion to 60a in 87% yield. Two applications of iodocyclopropane chemistry to organic synthesis are described in Sections 2 and 3. The first application is the stereospecific synthesis of substituted cis- and trans-1,2-divinylcyclopropanes (7 examples) and 1-phenyl-2-vinylcyclopropanes (2 examples), in which the key step is the Pd(0)-catalyzed cross-coupling reaction of a vinylcyclopropylzinc chloride, derived from the corresponding vinyl iodocyclopropane, with an iodo alkene or iodobenzene. For example, treatment of iodocyclopropane 116b with 2.05 equivalents of BuLi, followed by metathesis of the resulting lithiocyclopropane with 1.5 equivalents of ZnCl₂ , provided the requisite cyclopropylzinc chloride. Coupling of the cyclopropylzinc chloride with iodo alkene 123 in the presence of Pd(PPh₃)₄ gave cis-1,2-divinylcyclopropane 152 in 54% yield. The second application of iodocyclopropane chemistry is the synthesis of spiro[2.4]heptanes via BuLi-mediated cyclization of substituted cis-1-(4-alkynyl)-2- hydroxymethyl-1-iodocyclopropanes (4 examples). For example, treatment of the iodocyclopropane 225 with 2.2 equivalents of BuLi provided the corresponding cyclopropyUithium intermediate, which subsequendy underwent 5-exo-dig cyclization to afford, on workup, the spiro[2.4]heptane 231 in 79% yield.
Spatially Resolving the Enhancement Effect in Surface-Enhanced Coherent Anti-Stokes Raman Scattering by Plasmonic Doppler Gratings
Creators: name: Ouyang, Lei
name: Meyer, Tobias
name: See, Kel-Meng
name: Chen, Wei-Liang
name: Lin, Fan-Cheng
name: Akimov, Denis
name: Ehtesabi, Sadaf
name: Richter, Martin
name: Schmitt, Michael
name: Chang, Yu-Ming
name: Gräfe, Stefanie
name: Popp, Jürgen
name: Huang, Jer-Shing
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: In this work, we introduce the platform of plasmonic Doppler grating (PDG) to experimentally investigate the enhancement effect of plasmonic gratings in the input and output beams of nonlinear surface-enhanced coherent anti-Stokes Raman scattering (SECARS). PDGs are designable azimuthally chirped gratings that provide broadband and spatially dispersed plasmonic enhancement. Therefore, they offer the opportunity to observe and compare the overall enhancement from different combinations of enhancement in individual input and output beams. We first confirm PDG's capability of spatially separating the input and output enhancement in linear surface-enhanced fluorescence and Raman scattering. We then investigate spatially resolved enhancement in nonlinear SECARS, where coherent interaction of the pump, Stokes, and anti-Stokes beams is enhanced by the plasmonic gratings. By mapping the SECARS signal and analyzing the azimuthal angle-dependent intensity, we characterize the enhancement at individual frequencies. Together with theoretical analysis, we show that while simultaneous enhancement in the input and output beams is important for SECARS, the enhancement in the pump and anti-Stokes beams plays a more critical role in the overall enhancement than that in the Stokes beam. This work provides an insight into the enhancement mechanism of plasmon-enhanced spectroscopy, which is important for the design and optimization of plasmonic gratings. The PDG platform may also be applied to study enhancement mechanisms in other nonlinear light-matter interactions or the impact of plasmonic gratings on the fluorescence lifetime.
description: ACS Nano, published online on 23 December 2020
Las cadenas del demonio
Creators: name: Merlino, Elena
name: ANTONUCCI, Fausta
name: ANTONUCCI, Fausta
Publisher: name: Zenodo
Year: 2024
Subjects: Calderón
Métrica dramática
Segmentación dramática
Bibliografía
Las cadenas del demonio

description: Calderón Digital: base de datos, argumentos y motivos del teatro de Calderón (dir. Fausta Antonucci). Ficha dedicada a Las cadenas del demonio, con datos bibliográficos primarios y secundarios, fecha probable de composición, cómputo de las formas métricas, análisis de las coordenadas espacio-temporales, adscripción genérica y sinopsis argumental detallada, con indicación de los principales motivos (diegéticos y simbólicos) y propuesta de segmentación articulada según los cambios de forma métrica, de espacio y tiempo dramáticos.
Flux mobility delocalization in the Kitaev spin ladder
Creators: name: Metavitsiadis, Alexandros
name: Brenig, Wolfram
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the Kitaev spin-$1/2$ ladder, a model which exhibits self-localization due to fractionalization caused by exchange frustration. When a weak magnetic field is applied, the model is described by an effective fermionic Hamiltonian, with an additional time reversal symmetry breaking term. We show that this term alone is not capable of delocalizing the system but flux mobility is a prerequisite. For magnetic fields larger but comparable to the flux gap, fluxes become mobile and drive the system into a delocalized regime, featuring finite dc transport coefficients. Our findings are based on numerical techniques, exact diagonalization and dynamical quantum typicality, from which, we present results for the specific heat, the dynamical energy current correlation function, as well as the inverse participation ratio, contrasting the spin against the fermion representation. Implications of our results for two-dimensional extensions of the model will be speculated on.
description: 7 pages, 4 figures
Remarks on stationary and uniformly-rotating vortex sheets: Rigidity results
Creators: name: Gómez-Serrano, Javier
name: Park, Jaemin
name: Shi, Jia
name: Yao, Yao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: In this paper, we show that the only solution of the vortex sheet equation, either stationary or uniformly rotating with negative angular velocity $Ω$, such that it has positive vorticity and is concentrated in a finite disjoint union of smooth curves with finite length is the trivial one: constant vorticity amplitude supported on a union of nested, concentric circles. The proof follows a desingularization argument and a calculus of variations flavor.
description: 31 pages, 4 figures
What does the literature say about the use of personal voice assistants in older adults? A scoping review
Creators: name: Arnold, Anneliese
name: Kolody, Stephanie
name: Comeau, Aidan
name: Cruz, Antonio Miguel
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences
subject: Environmental Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Mental Health

description: With ageing, people may experience loss of function which may be compensated for by using technology. This review aims to examine the range and extent of personal voice assistants used for older adults living in the community, their technology readiness level, associated outcomes, and the strength of evidence. This study complies with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) checklist. The CINAHL, EMBASE, IEEE Xplore, MEDLINE, APA PsycInfo, Scopus, and Web of Science databases were used to identify studies that explored the use of personal voice assistant technology with older adults living in the community. The search yielded 499 studies, 22 of which were included for final analysis. Consumer technologies (e.g., Amazon Alexa) were evaluated in 18 studies, while four studies evaluated novel technologies. Most of the studies exploring the use of personal voice assistants with older adults evaluated technology usability and acceptance. Personal voice assistants were most commonly used by older adults for setting up reminders, searching for information, and checking the weather. None of the included studies evaluated the effectiveness of the technologies' ability to improve the management of health conditions or to facilitate the functional capacity of older adults. More research is needed to determine the possible impact of using personal voice assistants for older adults living in the community.
IMPLICATIONS FOR REHABILITATIONThe TRL for personal voice assistants is high.Personal voice assistants are currently being used by older adults for a range of activities including setting up reminders, searching for information, and checking the weather.Whether personal voice assistants can support older adults' ability to age in place is still unknown.The use of personal voice assistants in older adults is ripe for future enquiry and intervention-based research. The TRL for personal voice assistants is high. Personal voice assistants are currently being used by older adults for a range of activities including setting up reminders, searching for information, and checking the weather. Whether personal voice assistants can support older adults' ability to age in place is still unknown. The use of personal voice assistants in older adults is ripe for future enquiry and intervention-based research.
Usability of the dynamic scaffolding system: an adaptive mobility device in children with special needs
Creators: name: Altunalan, Turgay
name: Hoşbaş, Beyzanur Dikmen
name: Vatansever, Melek
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Physical Sciences not elsewhere classified
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Mental Health
subject: Computational Biology

description: Maintaining vertical position and moving are essential to healthy development. Children with motor difficulties may need assistive devices to stand upright or move. The Dynamic Scaffolding System (DSS) device was developed to support these skills. This study aims to explain the DSS's developmental stages, compare the device’s usage times based on diagnoses and motor impairment, and investigate the degree of satisfaction among parents of children using the device. The study included children with difficulty standing or stepping and their parents. We compared usage times of DSS depending on diagnosis (cerebral palsy (CP) or other diagnoses) and motor impairment levels. We assessed parental satisfaction by using the Quebec User Evaluation of Satisfaction with Assistive Technology (QUEST 2.0) and recorded adverse events. The ages of the participants (n:100) were between 9 and 108 months (44.94 ± 17.59), and 60% of the children had CP, and 40% had other diagnoses (genetic, metabolic, neuromuscular diseases). The duration of daily use of DSS ranged from 44.17 (±26.16) to 110 (±97.98) minutes, and the duration was similar among children at different levels of motor impairment (p = 0.262). The parents were most satisfied with the size, simplicity of use, and effectiveness, and they were least satisfied with the ease of adjustment, safety, and durability. They did not report any adverse events during the study. DSS can be considered a useable assistive device option for children with CP and other diagnoses with difficulty standing or stepping and a satisfactory device for parents of such children. The Dynamic Scaffolding System (DSS) is a useable trunk-supported adaptive walker for children with moderate to severe motor impairment.Parents are most satisfied with DSS's size, simplicity of use, and effectiveness.Children with moderate and severe motor impairment have similar duration of daily use time of DSS. The Dynamic Scaffolding System (DSS) is a useable trunk-supported adaptive walker for children with moderate to severe motor impairment. Parents are most satisfied with DSS's size, simplicity of use, and effectiveness. Children with moderate and severe motor impairment have similar duration of daily use time of DSS.
Physical Conditions of Five O VI Absorption Systems Towards PG $1522+101$
Creators: name: Sankar, Sriram
name: Narayanan, Anand
name: Savage, Blair D
name: Khaire, Vikram
name: Rosenwasser, Benjamin E
name: Charlton, Jane
name: Wakker, Bart P
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the analysis of five O VI absorbers identified across a redshift path of z $\sim (0.6 - 1.3)$ towards the background quasar PG $1522+101$ with information on five consecutive ionization stages of oxygen from O II to O VI. The combined $HST$ and $Keck$ spectra cover UV, redshifted EUV, and optical transitions from a multitude of ions spanning ionization energies in the range of $\sim (13 - 300)$ eV. Low ionization (C II, O II, Si II, Mg II) and very high ionization species (Ne VIII, Mg X) are non-detections in all the absorbers. Three of the absorbers have coverage of He I, in one of which it is a $> 3 σ$ detection. The kinematic structures of these absorbers are extracted from C IV detected in $HIRES$ spectra. The farthest absorber in our sample also contains the detections of Ne V and Ne VI. Assuming co-spatial absorbing components, the ionization models show the medium to be multiphased with small-scale density-temperature inhomogeneities that are sometimes kinematically unresolved. In two of the absorbers, there is an explicit indication of the presence of a warm gas phase ($T \gtrsim 10^5$ K) traced by O VI. In the remaining absorbers, the column densities of the ions are consistent with a non-uniform photoionized medium. The sub-solar [C/O] relative abundances inferred for the absorbers point at enrichment from massive Type II supernovae. Despite metal enrichment, the inferred wide range for [O/H] $\sim$ [$-2.1, +0.2$] amongst the absorbers along with their anti-correlation with the observed H I suggest poor small-scale mixing of metals with hydrogen in the regions surrounding galaxies and the IGM.
description: Accepted for publication in MNRAS. 19 Figures, 2 Tables. Additional figures and tables in the Appendix
Imaging of the Stellar Population of IC10 with Laser Guide Star Adaptive Optics and the Hubble Space Telescope
Creators: name: Vacca, William D.
name: Sheehy, Christopher D.
name: Graham, James R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present adaptive optics (AO) images of the central starburst region of the dwarf irregular galaxy IC10. The Keck 2 telescope laser guide star was used to achieve near diffraction-limited performance at H and K' (Strehls of 18% and 32%, respectively). The images are centered on the putative Wolf-Rayet (W-R) object [MAC92]24. We combine our AO images with F814W data from HST. By comparing the K' vs. [F814W]-K' color-magnitude diagram (CMD) with theoretical isochrones, we find that the stellar population is best represented by at least two bursts of star formation, one ~ 10 Myr ago and one much older (150-500 Myr). Young, blue stars are concentrated in the vicinity of [MAC92]24. This population represents an OB association with a half-light radius of about 3 pc. We resolve the W-R object [MAC92]24 into at least six blue stars. Four of these components have near-IR colors and luminosities that make them robust WN star candidates. By matching the location of C-stars in the CMD with those in the SMC we derive a distance modulus for IC10 of about 24.5 mag. and a foreground reddening of E(B-V) = 0.95. We find a more precise distance by locating the tip of the giant branch in the F814W, H, and K' luminosity functions. We find a weighted mean distance modulus of 24.48 +/- 0.08. The systematic error in this measurement, due to a possible difference in the properties of the RGB populations in IC10 and the SMC, is +/- 0.16 mag.
description: 13 pages, 13 figures, ApJ in press
Screening for primary aldosteronism on and off interfering medications Appendix
Creators: name: Li, XiaoYu
name: Liang, Jiayu
name: Hu, Jinbo
name: Ma, Linqiang
name: Yang, Jun
name: Zhang, Aipin
name: Jing, Ying
name: Song, Ying
name: Yang, Yi
name: feng, zhengping
name: Du, Zhipeng
name: wang, yue
name: luo, ting
name: he, wenwen
name: Shu, Xiaoyu
name: Li, Qifu
name: Yang, Shumin
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 320208
subject: Endocrinology

description: Screening for primary aldosteronism on and off interfering medications
Appendix 
Quantum causal histories in the light of quantum information
Creators: name: Livine, Etera R.
name: Terno, Daniel R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We use techniques of quantum information theory to analyze the quantum causal histories approach to quantum gravity. We show that while it is consistent to introduce closed timelike curves (CTCs), they cannot generically carry independent degrees of freedom. Moreover, if the effective dynamics of the chronology-respecting part of the system is linear, it should be completely decoupled from the CTCs. In the absence of a CTC not all causal structures admit the introduction of quantum mechanics. It is possible for those and only for those causal structures that can be represented as quantum computational networks. The dynamics of the subsystems should not be unitary or even completely positive. However, we show that other commonly maid assumptions ensure the complete positivity of the reduced dynamics.
description: 9 pages, 8 eps figures
New features in the simulation of neutrino oscillation experiments with GLoBES 3.0
Creators: name: Huber, Patrick
name: Kopp, Joachim
name: Lindner, Manfred
name: Rolinec, Mark
name: Winter, Walter
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present Version 3.0 of the GLoBES (``General Long Baseline Experiment Simulator'') software, which is a simulation tool for short- and long-baseline neutrino oscillation experiments. As a new feature, GLoBES 3.0 allows for user-defined systematical errors, which can also be used to simulate experiments with multiple discrete sources and detectors. In addition, the combination with external information, such as from different experiment classes, is simplified. As far as the probability calculation is concerned, GLoBES now provides an interface for the inclusion of non-standard physics without re-compilation of the software. The set of experiment prototypes coming with GLoBES has been updated. For example, built-in fluxes are now provided for the simulation of beta beams.
description: 14 pages, 3 figures, 1 table. Definition of chi2 refined, version to appear in Comput. Phys. Commun. GLoBES software available at http://www.mpi-hd.mpg.de/lin/globes/
Critical Temperature and Thermodynamics of Attractive Fermions at Unitarity
Creators: name: Burovski, Evgeni
name: Prokof'ev, Nikolay
name: Svistunov, Boris
name: Troyer, Matthias
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The unitarity regime of the BCS-BEC crossover can be realized by diluting a system of two-component lattice fermions with an on-site attractive interaction. We perform a systematic-error-free finite-temperature simulations of this system by diagrammatic determinant Monte Carlo. The critical temperature in units of Fermi energy is found to be T_c / E_F = 0.152(7). We also report the behavior of the thermodynamic functions, and discuss the issues of thermometry of ultracold Fermi gases.
description: 4+1 pages, 4 figures, published version + erratum
An excess of small-scale gravitational lenses observed in galaxy clusters
Creators: name: Meneghetti, Massimo
name: Davoli, Guido
name: Bergamini, Pietro
name: Rosati, Piero
name: Natarajan, Priyamvada
name: Giocoli, Carlo
name: Caminha, Gabriel B.
name: Metcalf, R. Benton
name: Rasia, Elena
name: Borgani, Stefano
name: Calura, Francesco
name: Grillo, Claudio
name: Mercurio, Amata
name: Vanzella, Eros
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Cold dark matter (CDM) constitutes most of the matter in the Universe. The interplay between dark and luminous matter in dense cosmic environments like galaxy clusters is studied theoretically using cosmological simulations. Observed gravitational lensing is used to test and characterize the properties of substructures - the small-scale distribution of dark matter - in clusters. An apt metric, the probability of strong lensing events produced by dark matter substructure, is devised and computed for 11 galaxy clusters. We report that observed cluster substructures are more efficient lenses than predicted by CDM simulations, by more than an order of magnitude. We suggest that hitherto undiagnosed systematic issues with simulations or incorrect assumptions about the properties of dark matter could explain our results.
description: 56 pages, 15 figures. Published in Science
Normal form transforms separate slow and fast modes in stochastic dynamical systems
Creators: name: Roberts, A. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Dynamical Systems (math.DS)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60H35; 37G05; 34C20

description: Modelling stochastic systems has many important applications. Normal form coordinate transforms are a powerful way to untangle interesting long term macroscale dynamics from detailed microscale dynamics. We explore such coordinate transforms of stochastic differential systems when the dynamics has both slow modes and quickly decaying modes. The thrust is to derive normal forms useful for macroscopic modelling of complex stochastic microscopic systems. Thus we not only must reduce the dimensionality of the dynamics, but also endeavour to separate all slow processes from all fast time processes, both deterministic and stochastic. Quadratic stochastic effects in the fast modes contribute to the drift of the important slow modes. The results will help us accurately model, interpret and simulate multiscale stochastic systems.
First Lattice QCD Study of the Sigma -> n Axial and Vector Form Factors with SU(3) Breaking Corrections
Creators: name: Guadagnoli, D.
name: Lubicz, V.
name: Papinutto, M.
name: Simula, S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present the first quenched lattice QCD study of the form factors relevant for the hyperon semileptonic decay Sigma -> n l nu. The momentum dependence of both axial and vector form factors is investigated and the values of all the form factors at zero-momentum transfer are presented. Following the same strategy already applied to the decay K0 -> pi- l nu, the SU(3)-breaking corrections to the vector form factor at zero-momentum transfer, f1(0), are determined with great statistical accuracy in the regime of the simulated quark masses, which correspond to pion masses above ~ 0.7 GeV. Besides f1(0) also the axial to vector ratio g1(0) / f1(0), which is relevant for the extraction of the CKM matrix element Vus, is determined with significant accuracy. Due to the heavy masses involved, a polynomial extrapolation, which does not include the effects of meson loops, is performed down to the physical quark masses, obtaining f1(0) = -0.948 +/- 0.029 and g1(0) / f1(0) = -0.287 +/- 0.052, where the uncertainties do not include the quenching effect. Adding a recent next-to-leading order determination of chiral loops, calculated within the Heavy Baryon Chiral Perturbation Theory in the approximation of neglecting the decuplet contribution, we obtain f1(0) = -0.988 +/- 0.029(lattice) +/- 0.040(HBChPT). Our findings indicate that SU(3)-breaking corrections are moderate on both f1(0) and g1(0). They also favor the experimental scenario in which the weak electricity form factor, g2(0), is large and positive, and correspondingly the value of |g1(0) / f1(0)| is reduced with respect to the one obtained with the conventional assumption g2(q**2) = 0 based on exact SU(3) symmetry.
description: final version to appear in Nucl. Phys. B
Η χρηματοδότηση των πολιτικών κομμάτων και των υποψηφίων: επισκόπηση της ελληνικής νομοθεσίας και νομολογίας και συγκριτικές αναφορές σε γερμανικό και γαλλικό δίκαιο
Creators: name: Μεγρέμης- Στειακάκης, Δημήτριος Στυλιανού
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Χρηματοδότηση των πολιτικών κομμάτων, κομματικό σύστημα
Δίκαιο των πολιτικών κομμάτων, κομματικός ανταγωνισμός
Συγκριτικό συνταγματικό δίκαιο
Funding of political parties, party system
Greek party law, party competition
Comparative constitutional law

description: Η εργασία αποβλέπει στην παρουσίαση, ανάλυση και συνταγματική αξιολόγηση του νόμου 3023/2002 για τη χρηματοδότηση των πολιτικών κομμάτων και των υποψηφίων τους, καθώς και του νόμου για τα οικονομικά του εκλογικού αγώνα στους Ο.Τ.Α. (ν. 3870/2010). Εκτός από την εξέταση της ευάριθμης νομολογίας, παρατίθεται συγκριτικά το σχετικό νομοθετικό πλαίσιο της Γερμανίας και της Γαλλίας. Βασικός άξονας είναι η εφαρμογή των συνταγματικών επιταγών για ισότητα των ευκαιριών των πολιτικών κομμάτων και για διαφάνεια στα οικονομικά τους. Έτσι, πέρα από το προκαταρκτικό ζήτημα των ουσιαστικών-ποιοτικών προϋποθέσεων για τη δυνατότητα ενός κόμματος να λάβει κρατική χρηματοδότηση, αναλύονται ο τρόπος κατανομής της και η επίδρασή της στην καρτελοποίηση του κομματικού ανταγωνισμού. Εξίσου σημαντικές είναι και οι ρυθμίσεις για τους ιδιωτικούς πόρους των κομμάτων, που μολονότι καλούνται να περιορίσουν την αθέμιτη αλληλεξάρτηση πολιτικής και οικονομίας, παρουσιάζουν κρίσιμες ατέλειες. Η εργασία πραγματεύεται επίσης τις ρυθμίσεις για την διαφανή οικονομική διαχείριση και την δημοσιότητα των οικονομικών των κομμάτων και των υποψηφίων. Τέλος, εκτενής αναφορά γίνεται στον τρόπο και την αποτελεσματικότητα με την οποία το κράτος ελέγχει τα δημοσιευόμενα οικονομικά στοιχεία και επιβάλλει τις προβλεπόμενες κυρώσεις για οικονομικές παραβάσεις.
description: The present thesis aims at the presentation, analysis and constitutional evaluation of the law 3023/ 2002 on funding of political parties and candidates and the law 3870/2010 on funding of election campaigns for the local government. Apart from the examination of the little jurisprudence, we compare the Greek legal framework with the German and the French ones. The cornerstone of the analysis is the implementation of the constitutional principles of equal opportunities and transparency in party funding. Preliminarily, we touch on the question of the substantial and qualitative prerequisites for a political party to receive state funding. Then we analyze the system of distribution of public subsidies and its impact on the cartelization of party competition. We examine equally, the regulation of party private income and resources, aiming at restraining political graft, but presents crucial imperfections. Another object of analysis is the regulation on transparent financial party management and disclosure of party and candidate assets. Finally, we explore and evaluate the audit of party funding and spending, as well as the statutory sanctions.
Walking aid training as a clinical competence in Canadian entry-to-practice professional academic programs
Creators: name: Manocha, Ranita H. K.
name: Best, Krista L.
name: Charette, Caroline
name: Curlock, Hannah
name: Sigfusson, Merissa
name: Faure, Céline
name: Miller, William C.
name: Routhier, François
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Mental Health

description: Multiple healthcare professionals fit walking aids (WA) and train individuals on their use. The purpose of this investigation was to describe curricula on WA fitting and training in Canadian entry-to-practice professional programs. An online survey was administered to leads from all accredited programs (n = 199). Seventeen questions asked about the importance of WA education, instructional methods and time dedicated to WA fitting and skills training, and how the pandemic had affected WA curriculum delivery. Responses were received from 97 programs. While most occupational therapy (OT, 8/15), physiatry (PM&R, 5/9), and physical therapy (PT, 12/19) trainees received more than 3 h of instruction on WA fitting, most nursing (29/40) and pharmacy (7/8) programs spent less than 3 h on this topic. Most OT (9/15) and PT (15/19) programs spent more than 3 h on WA skills training whereas most nursing (25/40), pharmacy (4/8), and PM&R (5/9) programs spent less than 3 h on this subject. Across all programs, 52% educated students on adapting activities of daily living for WA while 18% provided education on WA maintenance and repair. Only 19/89 programs consulted a formal WA skills training resource for curriculum development. Seventeen of 55 programs modified their WA curricula due to the pandemic. There is a wide range in curricular approaches to WA education in Canadian professional programs. This highlights the need for a standardised WA education program to guide curricular development to ultimately improve safe WA use for clients with short- and long-term mobility impairments.IMPLICATIONS FOR REHABILITATIONCurricula on walking aids is extremely variable within and between programs.Navigating terrains, adapting activities of daily living, and maintenance are poorly taught.There is a need for a national standardized curriculum on walking aids.This curriculum should be modular and designed for practitioners, students, and patients. Curricula on walking aids is extremely variable within and between programs. Navigating terrains, adapting activities of daily living, and maintenance are poorly taught. There is a need for a national standardized curriculum on walking aids. This curriculum should be modular and designed for practitioners, students, and patients.
LEED crystallographic studies for chemisorption-induced relaxations and reconstructions of copper and rhodium surfaces
Creators: name: Liu, Wei
Publisher: name: University of British Columbia
Year: 2009

description: Low-energy electron diffraction (LEED) has been used to investigate some structures formed by electronegative atoms (O and P) on copper and rhodium single crystal surfaces. The motivation is to provide new atomic-scale details, to develop fundamental understanding of surface structural chemical principles, and to help establish approaches for determining relatively complex surface structures using tensor LEED. A detailed analysis for the Cu(110)-c(6x2)-O surface indicates that this structure is composed of double-stranded chains built from 12-membered rings formed by alternating O and Cu atoms. This analysis provides direct information on the structural details, which support the view that the driving force for this structure relates to sufficient O being incorporated in order to stabilize the surface as a modified (211) plane of bulk Cu20. Together with the structural details from LEED analyses for two other oxygen on copper surfaces, designated as Cu(100)-(2xl)-O and Cu(100)-(2√2x√2 )R45°-O, certain common features are identified. It is found that all these structures receive some stability from being able to fit O-Cu-0 three-atom building blocks, of the sort needed to construct bulk Cu20, on to the clean surfaces, while ensuring that each O atom maintains its favorable four-coordinate status with reasonable O-Cu bond lengths (average close to 1.90 Å). A study of the Cu(110)- [formula which cannot be rendered here; see abstract] (2 2\ ,-1 1. -P surface establishes a new type of reconstruction in which all P atoms occupy identical six-coordinate sites; the reconstruction involves 0.25 ML of "added Cu" atoms at hollow sites, each bonded to two neighboring P atoms, which line up along the [112] direction. Appreciable relaxations, both vertical and lateral, are carefully rationalized; the average P-Cu bond length is determined to be 2.33 A. An analysis for the Rh(111)-( √7x√7 )R19.1°-P surface has identified a novel reconstruction for the topmost metallic layer, which involves a packed arrangement of Rh pentagons and triangles. Each P atom has an identical environment and bonds to eight neighboring Rh atoms with P-Rh bond lengths ranging from 2.17 to 2.97'A. The nearly flat, densely-packed Rh-P layer (with five Rh and three P per seven substrate atoms in the unit mesh) appears to give this surface a high general stability. This represents the first successful determination for a complex √7x√7 surface structure. The model type identified may have wider applicability, for example the analogous system formed by S on Pd(111); suggestions are also made in the latter case on how the structural form may influence chemical reactivity, such as for the cyclization of acetylene to thiophene.
Quantifying vegetation biophysical variables from imaging spectroscopy data: a review on retrieval methods
Creators: name: Verrelst, Jochem
name: Malenovský, Zbyněk
name: Van der Tol, Christiaan
name: Camps-Valls, Gustau
name: Gastellu-Etchegorry, Jean-Philippe
name: Lewis, Philip
name: North, Peter
name: Moreno, José
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Image and Video Processing (eess.IV)
subject: FOS: Biological sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: An unprecedented spectroscopic data stream will soon become available with forthcoming Earth-observing satellite missions equipped with imaging spectroradiometers. This data stream will open up a vast array of opportunities to quantify a diversity of biochemical and structural vegetation properties. The processing requirements for such large data streams require reliable retrieval techniques enabling the spatiotemporally explicit quantification of biophysical variables. With the aim of preparing for this new era of Earth observation, this review summarizes the state-of-the-art retrieval methods that have been applied in experimental imaging spectroscopy studies inferring all kinds of vegetation biophysical variables. Identified retrieval methods are categorized into: (1) parametric regression, including vegetation indices, shape indices, and spectral transformations; (2) non-parametric regression, including linear and non-linear machine learning regression algorithms; (3) physically-based, including inversion of radiative transfer models (RTMs) using numerical optimization and look-up-table approaches; and (4) hybrid regression methods, which combine RTM simulations with machine learning regression methods. For each of these categories, an overview of widely applied methods with application to mapping vegetation properties is given. In view of processing imaging spectroscopy data, a critical aspect involves the challenge of dealing with spectral multicollinearity. The ability to provide robust estimates, retrieval uncertainties, and acceptable retrieval processing speed are other important aspects in view of operational processing. Recommendations towards new-generation spectroscopy-based processing chains for the operational production of biophysical variables are given.
Code and demo video for "pytest-ranking: A Regression Test Prioritization Tool for Python"
Creators: name: Cheng, Runxiang
name: Ke, Kaiyao
name: Marinov, Darko
Publisher: name: Zenodo
Year: 2025

description: This is a companion website for the demonstration "pytest-ranking: A Regression Test Prioritization Tool for Python" to be appeared in ACM International Conference on the Foundations of Software Engineering (FSE) Demonstrations 2025.

Regression Test Prioritization (RTP) can find test failures quicker and provide faster feedback to developers to help in debugging. pytest-ranking is an RTP tool for Python and its most popular testing framework Pytest. We evaluate pytest-ranking on thousands builds for over a dozen open-source Python projects running on the GitHub Actions CI. Our experiments show that our tool integrates well with the Pytest ecosystem, has a low runtime overhead, and finds test failures faster than the baseline orders.

For links on pytest-ranking, please see below:

PyPI Page

GitHub Page

Demo Video

Experiment Artifact and Data
Black hole growth and stellar assembly at high-z
Creators: name: Polletta, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Context. Observations indicate a strong link between star formation and black hole (BH) growth, but some questions remain unanswered: whether both activities are coeval or whether one precedes the other, what their characteristic timescales are, and what kinds of physical processes are responsible for this interplay. Aims. We examine stellar and BH masses (M_star and M_BH) in z~2 active systems at the peak of their AGN or star formation activity to investigate how they are linked and whether AGN radiative or else radio power provides a feedback mechanism that regulates the stellar growth in these systems. Methods. We analyze the infrared (IR) spectral energy distributions of radio, sub-millimeter and mid-IR selected AGNs at z~1-3 and constrain their stellar and AGN luminosities using AGN and host-galaxy templates. Results. We find evidence of increasing stellar light, thereby decreasing the AGN mid-IR power going from mid-IR selected AGNs, to radio galaxies, and to sub-millimeter AGNs. This trend can be explained by either decreasing Eddington ratios or increasing offsets from the local M_BH-M_star relation. All systems are characterized by high star formation rates regardless of their different AGN powers, thus neither AGN radiative power nor AGN-driven radio activity seems to influence the star formation rate in the selected AGNs. We discuss two possible evolutionary scenarios that might link these three AGN classes.
description: A&A Letters accepted
Unitary long-time evolution with quantum renormalization groups and artificial neural networks
Creators: name: Burau, Heiko
name: Heyl, Markus
Publisher: name: arXiv
Year: 2020
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In this work we combine quantum renormalization group approaches with deep artificial neural networks for the description of the real-time evolution in strongly disordered quantum matter. We find that this allows us to accurately compute the long-time coherent dynamics of large, many-body localized systems in non-perturbative regimes including the effects of many-body resonances. Concretely, we use this approach to describe the spatiotemporal buildup of many-body localized spin glass order in random Ising chains. We observe a fundamental difference to a non-interacting Anderson insulating Ising chain, where the order only develops over a finite spatial range. We further apply the approach to strongly disordered two-dimensional Ising models highlighting that our method can be used also for the description of the real-time dynamics of nonergodic quantum matter in a general context.
description: 4 pages, 3 figures
The perspectives of older adults with mild cognitive impairment and their caregivers on the use of socially assistive robots in healthcare: exploring factors that influence attitude in a pre-implementation stage
Creators: name: Van Assche, Maaike
name: Petrovic, Mirko
name: Cambier, Dirk
name: Calders, Patrick
name: Van Gelder, Patrick
name: Van de Velde, Dominique
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Neuroscience
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Mental Health

description: Due to increasing age and an increasing prevalence rate of neurocognitive disorders such as Mild Cognitive Impairment (MCI) and dementia, independent living may become challenging. The use of socially assistive robots (SARs) is one solution that can enable older adults with cognitive impairment to remain independent. However, at present, there is a lack of knowledge about the attitudes of older adults with MCI and their caregivers towards SARs. This study relies on a constructivist grounded theory approach. Semi-structured interviews were conducted to gain a deeper insight into attitudes of two different stakeholder groups; older adults with MCI and their (in)formal caregivers. Forty individual semi-structured interviews were conducted with older adults with MCI (N = 30) and (in)formal caregivers (N = 10). Data revealed different perspectives on SARs in healthcare for the involved stakeholders. Two main topics could be derived: (1) perspectives on robot assistance, discussing different viewpoints on the potential value of robots as helpers, and (2) perspectives on implementation, revealing different factors that could affect implementation. Both topics may explain a positive, impartial or negative attitude towards SARs. This study identified different factors that should be taken into account when implementing a SAR in the home environment of older adults. Despite the fact that the benefits of SARs are often recognized, many older participants currently seem not ready yet to commit to the use of a SAR.IMPLICATIONS FOR REHABILITATIONThis study explores the attitudes towards a SAR, developed to stimulate and support older adults with Mild Cognitive Impairment (MCI) on a physical, cognitive and social level.The results give a deeper insight into different factors contributing to a (non-) successful implementation of SARs in the home environment of older adults with MCI. This study explores the attitudes towards a SAR, developed to stimulate and support older adults with Mild Cognitive Impairment (MCI) on a physical, cognitive and social level. The results give a deeper insight into different factors contributing to a (non-) successful implementation of SARs in the home environment of older adults with MCI.
Finding nonlinear system equations and complex network structures from data: a sparse optimization approach
Creators: name: Lai, Ying-Cheng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Dynamical Systems (math.DS)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: In applications of nonlinear and complex dynamical systems, a common situation is that the system can be measured but its structure and the detailed rules of dynamical evolution are unknown. The inverse problem is to determine the system equations and structure based solely on measured time series. Recently, methods based on sparse optimization have been developed. For example, the principle of exploiting sparse optimization such as compressive sensing to find the equations of nonlinear dynamical systems from data was articulated in 2011 by the Nonlinear Dynamics Group at Arizona State University. This article presents a brief review of the recent progress in this area. The basic idea is to expand the equations governing the dynamical evolution of the system into a power series or a Fourier series of a finite number of terms and then to determine the vector of the expansion coefficients based solely on data through sparse optimization. Examples discussed here include discovering the equations of stationary or nonstationary chaotic systems to enable prediction of dynamical events such as critical transition and system collapse, inferring the full topology of complex networks of dynamical oscillators and social networks hosting evolutionary game dynamics, and identifying partial differential equations for spatiotemporal dynamical systems. Situations where sparse optimization is effective and those in which the method fails are discussed. Comparisons with the traditional method of delay coordinate embedding in nonlinear time series analysis are given and the recent development of model-free, data driven prediction framework based on machine learning is briefly introduced.
description: 23 pages, 2 figures. arXiv admin note: text overlap with arXiv:1704.08764
Pre-Merger Localization of Gravitational-Wave Standard Sirens With LISA I: Harmonic Mode Decomposition
Creators: name: Kocsis, Bence
name: Haiman, Zoltán
name: Menou, Kristen
name: Frei, Zsolt
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The continuous improvement in localization errors (sky position and distance) in real time as LISA observes the gradual inspiral of a supermassive black hole (SMBH) binary can be of great help in identifying any prompt electromagnetic counterpart associated with the merger. We develop a new method, based on a Fourier decomposition of the time-dependent, LISA-modulated gravitational-wave signal, to study this intricate problem. The method is faster than standard Monte Carlo simulations by orders of magnitude. By surveying the parameter space of potential LISA sources, we find that counterparts to SMBH binary mergers with total mass M~10^5-10^7 M_Sun and redshifts z
description: 29 pages, 12 figures, version accepted by Phys Rev D
LSE ORWG Guide to Preregistration, Pre-Analysis Plans, and Registered Reports
Creators: name: London School of Economics and Political Science
Publisher: name: Zenodo
Year: 2025
Subjects: Open Research
Preregistration
Registered reports
Pre-analysis Plans

description: This is the second in a series of guides to open research created for LSE researchers under the auspices of LSE's Open Research Working Group. This guide covers the basic steps you will need to take when creating and submitting a preregistration, pre-analysis plan, or registered report. All three of these methods will enhance the reproducibility of methods. This also makes research more efficient by  ensuring negative results are published, preventing others from pursuing paths that have already proven fruitless.

Preregistration and pre-analysis plans are ways to document your methods and analysis decisions ahead of time. A registered report adds a journal’s peer review process before data is collected (you’ll get feedback on your preregistration and can modify it before conducting the work you describe).