cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Human-Centred Learning Analytics and AI in Education: a Systematic Literature Review
Creators: name: Alfredo, Riordan
name: Echeverria, Vanessa
name: Jin, Yueqiao
name: Yan, Lixiang
name: Swiecki, Zachari
name: Gašević, Dragan
name: Martinez-Maldonado, Roberto
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computers and Society (cs.CY)
subject: Artificial Intelligence (cs.AI)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: The rapid expansion of Learning Analytics (LA) and Artificial Intelligence in Education (AIED) offers new scalable, data-intensive systems but also raises concerns about data privacy and agency. Excluding stakeholders -- like students and teachers -- from the design process can potentially lead to mistrust and inadequately aligned tools. Despite a shift towards human-centred design in recent LA and AIED research, there remain gaps in our understanding of the importance of human control, safety, reliability, and trustworthiness in the design and implementation of these systems. We conducted a systematic literature review to explore these concerns and gaps. We analysed 108 papers to provide insights about i) the current state of human-centred LA/AIED research; ii) the extent to which educational stakeholders have contributed to the design process of human-centred LA/AIED systems; iii) the current balance between human control and computer automation of such systems; and iv) the extent to which safety, reliability and trustworthiness have been considered in the literature. Results indicate some consideration of human control in LA/AIED system design, but limited end-user involvement in actual design. Based on these findings, we recommend: 1) carefully balancing stakeholders' involvement in designing and deploying LA/AIED systems throughout all design phases, 2) actively involving target end-users, especially students, to delineate the balance between human control and automation, and 3) exploring safety, reliability, and trustworthiness as principles in future human-centred LA/AIED systems.
description: 40 pages, 6 figures, 1 table in Appendix
Die Rolle der Beistandspersonen im Erwachsenenschutz:
Herausforderungen des Übergangs von jungen Erwachsenen ins Erwachsenenleben für den zivilrechtlichen Erwachsenenschutz
Creators: name: Baskaran, Sinthujan
Publisher: name: Hochschule Luzern – Soziale Arbeit
Year: 2024

description: Der Übergang junger Erwachsener ins Erwachsenenleben stellt eine bedeutende Herausforderung dar, sowohl für die Betroffenen selbst als auch für die Beistandspersonen im zivilrechtlichen Erwachsenenschutz. Diese Masterarbeit untersucht die Rolle der Beistandspersonen und fokussiert dabei auf sozialarbeiterische Handlungskonzepte, die sich besonders eignen, um junge Erwachsene in dieser kritischen Übergangsphase zu begleiten und zu fördern. Die zentrale Forschungsfrage lautet: Welche Handlungskonzepte der Sozialen Arbeit sind für Beistandspersonen im Erwachsenenschutz besonders geeignet, um junge Erwachsene zu begleiten und unterstützen sowie eine tragfähige Arbeitsbeziehung aufzubauen und ihnen einen erfolgreichen Übergang in die Selbstständigkeit zu ermöglichen?

Zur Beantwortung dieser Frage wurde eine Literaturstudie durchgeführt, die drei zentrale sozialarbeiterische Konzepte analysiert: den Capability-Approach, die Agency-Perspektive und das Case-Management. Der Capability-Approach konzentriert sich auf die Förderung individueller Fähigkeiten junger Erwachsener. Die Agency-Perspektive betont die Bedeutung der Selbstwirksamkeit und der Fähigkeit, eigenständig Entscheidungen zu treffen. Das Case-Management bietet eine strukturierte Methodik zur Koordination und Integration verschiedener Unterstützungsangebote.

Die Arbeit beleuchtet die vielfältigen Herausforderungen, denen junge Erwachsene in der Schweiz gegenüberstehen, darunter Bildungslücken, Arbeitslosigkeit und psychische Gesundheitsprobleme. Besonders schwierig gestaltet sich der Übergang für mehrfach belastete junge Menschen, die nach dem Verlassen der Kinder- und Jugendhilfe auf soziale oder institutionelle Unterstützung angewiesen sind.

Die Ergebnisse zeigen, dass eine Kombination der untersuchten Konzepte Beistandspersonen befähigt, gezielt auf die individuellen Bedürfnisse junger Erwachsener einzugehen und stabile, vertrauensvolle Arbeitsbeziehungen aufzubauen. Diese Beziehungen sind entscheidend für die unmittelbare Verbesserung der Lebenssituation und die langfristige Integration in die Gesellschaft.

Mit dieser Arbeit wird ein Beitrag zur Weiterentwicklung der Praxis von Berufsbeistandspersonen im zivilrechtlichen Erwachsenenschutz geleistet. Sie bietet praxisorientierte Handlungsempfehlungen, um Rahmenbedingungen zu schaffen, die jungen Erwachsenen den Übergang in ein selbstbestimmtes Leben ermöglichen. Dabei wird auch die Bedeutung der interdisziplinären Vernetzung und Zusammenarbeit betont, um eine ganzheitliche und nachhaltige Unterstützung sicherzustellen.
description: + Code Diss LU: hslusa mas sar + Fussnote: Master-Arbeit MAS Sozialarbeit und Recht, Hochschule Luzern – Soziale Arbeit, 2025 + NL-Code: NLLUHSA202502
The electrostatic potential of atomic nanostructures on a metal surface
Creators: name: Bolat, Rustem
name: Guevara, Jose M.
name: Leinen, Philipp
name: Knol, Marvin
name: Arefi, Hadi H.
name: Maiworm, Michael
name: Findeisen, Rolf
name: Temirov, Ruslan
name: Hofmann, OliverT.
name: Maurer, Reinhard J.
name: Tautz, F. Stefan
name: Wagner, Christian
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The discrete and charge-separated nature of matter - electrons and nuclei - results in local electrostatic fields that are ubiquitous in nanoscale structures and are determined by their shape, material, and environment. Such fields are relevant in catalysis, nanoelectronics and quantum nanoscience, and their control will become even more important as the devices in question reach few-nanometres dimensions. Surface-averaging techniques provide only limited experimental access to these potentials at and around individual nanostructures. Here, we use scanning quantum dot microscopy to investigate how electric potentials evolve as nanostructures are built up atom by atom. We image the potential over adatoms, chains, and clusters of Ag and Au atoms on Ag(111) and quantify their surface dipole moments. By focusing on the total charge density, these data establish a new benchmark for ab initio calculations. Indeed, our density functional theory calculations not only show an impressive agreement with experiment, but also allow a deeper analysis of the mechanisms behind the dipole formation, their dependence on fundamental atomic properties and on the atomic configuration of the nanostructures. This allows us to formulate an intuitive picture of the basic mechanisms behind dipole formation, which enables better design choices for future nanoscale systems such as single atom catalysts.
description: 11 pages, 9 figures
New Parallaxes for the Upper Scorpius OB Association
Creators: name: Donaldson, Jessica
name: Weinberger, Alycia
name: Gagné, Jonathan
name: Boss, Alan
name: Keiser, Sandy
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Upper Scorpius is a subgroup of the nearest OB association, Scorpius--Centaurus. Its young age makes it an important association to study star and planet formation. We present parallaxes to 52 low mass stars in Upper Scorpius, 28 of which have full kinematics. We measure ages of the individual stars by combining our measured parallaxes with pre-main sequence evolutionary tracks. We find there is a significant difference in the ages of stars with and without circumstellar disks. The stars without disks have a mean age of 4.9+/-0.8 Myr and those with disks have an older mean age of 8.2+/-0.9 Myr. This somewhat counterintuitive result suggests that evolutionary effects in young stars can dominate their apparent ages. We also attempt to use the 28 stars with full kinematics (i.e.\ proper motion, radial velocity, and parallax) to trace the stars back in time to their original birthplace to obtain a trackback age. We find, as expected given large measurement uncertainties on available radial velocity measurements, that measurement uncertainties alone cause the group to diverge after a few Myr.
description: Accepted to The Astrophysical Journal
Color measurements of the polarized light scattered by the dust in protoplanetary disks
Creators: name: Ma, J.
name: Schmid, H. M.
name: Stolker, T.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Ground-based high-contrast instruments have yielded reflected light images of protoplanetary disks. Quantitative measurements of the reflected radiation provide strong constraints on the scattering dust which can clarify the dust particle evolution in these disks and the composition of the forming planets. This study aimed to derive the wavelength dependence of polarized reflectivity $(\hat{Q}_φ/I_\star)_λ$ for 11 disks, constraining dust properties and identifying systematic differences. Using ESO archive data from SPHERE/ZIMPOL and SPHERE/IRDIS instruments, we obtained accurate intrinsic polarized reflectivity $\hat{Q}_φ/I_\star$ values at wavelengths from 0.62$μ$m to 2.2$μ$m.
 Polarized reflectivities ranged from $Q_φ/I_\star\approx 0.1\%$ to 1.0$\%$, with PSF-corrected values averaging 1.6 times higher than observed. Accurate PSF calibrations reduced systematic errors to $Δ\hat{Q}_φ/\hat{Q}_φ\approx 10\%$ or less. For each disk, we derived a polarized reflectivity color $η_{V/IR}$ between a visible band $λ<1~μ$m and a near-IR band $λ>1~μ$m and other wavelength combinations. Wavelength gradients $η$ varied significantly among objects. Disks around Herbig stars (HD 169142, HD 135334B, HD 100453, MWC 758, and HD 142527) showed a red color $η_{\rm V/IR}>0.5$, suggesting rather compact dust grains. T-Tauri star disks (PDS 70, TW Hya, RX J1615, and PDS 66) were predominantly gray $-0.5<η_{\rm V/IR}<0.5$, with an absence of blue colors incompatible with porous aggregates. Exceptional red colors for LkCa15 and MWC758 were attributed to potential extra reddening from hot dust near the star. Future studies incorporating parameters like fractional polarization $\langle p_φ\rangle$ hold promise for advancing our understanding of dust properties within protoplanetary disks.
description: 15 pages, 9 figures, 5 tables, 2 appendices. Accepted by A&A
Modulation of the Interactions Between α-Synuclein and Lipid Membranes by Post-translational Modifications
Creators: name: Bell, Rosie
name: Vendruscolo, Michele
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021
Subjects: Neurology
Parkinson's disease
protein aggregation
lipid membranes
post-translational modifications
lipid homeostasis
protein homeostais

description: Parkinson's disease is characterised by the presence in brain tissue of aberrant inclusions known as Lewy bodies and Lewy neurites, which are deposits composed by α-synuclein and a variety of other cellular components, including in particular lipid membranes. The dysregulation of the balance between lipid homeostasis and α-synuclein homeostasis is therefore likely to be closely involved in the onset and progression of Parkinson's disease and related synucleinopathies. As our understanding of this balance is increasing, we describe recent advances in the characterisation of the role of post-translational modifications in modulating the interactions of α-synuclein with lipid membranes. We then discuss the impact of these advances on the development of novel diagnostic and therapeutic tools for synucleinopathies.
Coherence and Confirmation through Causation
Creators: name: Wheeler, Gregory
name: Scheines, Richard
Publisher: name: Carnegie Mellon University
Year: 2013
Subjects: subject: Philosophy
subject: FOS: Philosophy, ethics and religion

description: Coherentism maintains that coherent beliefs are more likely to be true than incoherent beliefs, and that coherent evidence provides more confirmation of a hypothesis when the evidence is made coherent by the explanation provided by that hypothesis. Although probabilistic models of credence ought to be well-suited to justifying such claims, negative results from Bayesian epistemology have suggested otherwise. In this essay we argue that the connection between coherence and confirmation should be understood as a relation mediated by the causal relationships among the evidence and a hypothesis, and we offer a framework for doing so by fitting together probabilistic models of coherence, confirmation, and causation. We show that the causal structure among the evidence and hypothesis is sometimes enough to determine whether the coherence of the evidence boosts confirmation of the hypothesis, makes no difference to it, or even reduces it. We also show that, ceteris paribus, it is not the coherence of the evidence that boosts confirmation, but rather the ratio of the coherence of the evidence to the coherence of the evidence conditional on a hypothesis.
Reconstruction of energy conditions from observations and implications for extended theories of gravity
Creators: name: Penna-Lima, M.
name: Vitenti, S. D. P.
name: Alves, M. E. S.
name: de Araujo, J. C. N.
name: Carvalho, F. C.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The attempt to describe the recent accelerated expansion of the Universe includes different propositions for dark energy models and modified gravity theories. Establish their features in order to discriminate and even rule out part of these models using observational data is a fundamental issue of cosmology. In the present work we consider a class of extended theories of gravity (ETG) that are minimally coupled to the ordinary matter fields. In this context, and assuming a homogeneous and isotropic spacetime, we derive the energy conditions for this ETG class. We then put constraints on these conditions using a model-independent approach to reconstruct the deceleration function along with the Joint Light-curve Analysis (JLA) supernova sample, 11 baryon acoustic oscillation and 22 cosmic-chronometer measurements. We also consider an additional condition imposing the strong energy condition only on the ordinary matter. This is to guarantee the presence of only attractive matter in the energy-momentum tensor, at least in the redshift range of the observations, i.e., the recent accelerated expansion of the Universe is due solely to the modifications in the gravity theory. The main result of this work is a general reconstruction of the energy conditions valid for every considered ETG.
description: 20 pages, 5 figures
UK Consumers’ Preferences for Ethical Attributes of Floating Rice: Implications for Environmentally Friendly Agriculture in Vietnam
Creators: name: Tu, Vo Hong
name: Kopp, Steven W.
name: Trang, Nguyen Thuy
name: Kontoleon, Andreas
name: Yabe, Mitsuyasu
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021
Subjects: agricultural policy
food policy
valuation of environmental effects
government policy
value chain agri-food
agriculture in international trade
carbon footprint
greenhouse gas reduction
fair trade
biodiversity

description: Vietnam plays an important role in bearing global food security. However, Vietnamese rice farmers face several challenges, including pressures to develop sustainable livelihoods while reducing the environmental impacts of their production activities. Various Vietnamese agricultural restructuring policies were promulgated to promote the adoption of environmentally friendly practices to generate high value added for rice farmers, but the farmers are reluctant to adopt them because of perceived lack of demand. Decreasing consumption of rice in Asia and increasing demands in Europe shaped Vietnamese rice exporting policies. New trade agreements, such as the UK–Vietnam Free Trade Agreement, offer new target markets for Vietnamese rice farmers. This research provides empirical evidence related to the preferences of UK consumers for ethical attributes for floating rice imported from Vietnam. Floating rice represents a traditional method of rice cultivation that relies on the natural flooding cycle. Its cultivation uses very few agrochemical inputs and provides several other environmental, economic, and social benefits. In an online survey, the study used a choice experiment that asked 306 UK consumers to report their preferences for one kilo of floating rice with three non-market attributes: reduction in carbon dioxide emissions, allocation of profits to the farmers, and restitution of biodiversity. Overall, study participants favored the attributes of floating rice, but reported utility for only the “fair trade” attribute and for a marginal willingness to pay premiums for profit allocations to farmers. Consumers did not find value in either CO2 emission reduction or biodiversity improvement. Results from the study provide recommendations to develop agricultural programs, distribution strategies, and informational methods to encourage floating rice consumption in the UK.
Evidence for an Excitonic Insulator State in Ta$_2$Pd$_3$Te$_5$
Creators: name: Huang, Jierui
name: Jiang, Bei
name: Yao, Jingyu
name: Yan, Dayu
name: Lei, Xincheng
name: Gao, Jiacheng
name: Guo, Zhaopeng
name: Jin, Feng
name: Li, Yupeng
name: Yuan, Zhenyu
name: Chai, Congcong
name: Sheng, Haohao
name: Pan, Mojun
name: Chen, Famin
name: Liu, Junde
name: Gao, Shunye
name: Qu, Gexing
name: Liu, Bo
name: Jiang, Zhicheng
name: Liu, Zhengtai
name: Ma, Xiaoyan
name: Zhou, Shiming
name: Huang, Yaobo
name: Yun, Chenxia
name: Zhang, Qingming
name: Li, Shiliang
name: Jin, Shifeng
name: Ding, Hong
name: Shen, Jie
name: Su, Dong
name: Shi, Youguo
name: Wang, Zhijun
name: Qian, Tian
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The excitonic insulator (EI) is an exotic ground state of narrow-gap semiconductors and semimetals arising from spontaneous condensation of electron-hole pairs bound by attractive Coulomb interaction. Despite research on EIs dating back to half a century ago, their existence in real materials remains a subject of ongoing debate. In this study, through systematic experimental and theoretical investigations, we provide evidence for the existence of an EI ground state in a van der Waals compound Ta$_2$Pd$_3$Te$_5$. Density-functional-theory calculations suggest that it is a semimetal with a small band overlap, whereas various experiments exhibit an insulating ground state with a clear band gap. Upon incorporating electron-hole Coulomb interaction into our calculations, we obtain an EI phase where the electronic symmetry breaking opens a many-body gap. Angle-resolved photoemission spectroscopy measurements exhibit that the band gap is closed with a significant change in the dispersions as the number of thermally excited charge carriers becomes sufficiently large in both equilibrium and nonequilibrium states. Structural measurements reveal a slight breaking of crystal symmetry with exceptionally small lattice distortion in the insulating state, which cannot account for the significant gap opening. Therefore, we attribute the insulating ground state with a gap opening in Ta$_2$Pd$_3$Te$_5$ to exciton condensation, where the coupling to the symmetry-breaking electronic state induces a subtle change in the crystal structure.
description: 10 pages, 5 figures
Additional file 2 of SLC20A2-related primary familial brain calcification with purely acute psychiatric symptoms: a case report
Creators: name: Bu, Weiting
name: Hou, Lijing
name: Zhu, Meijia
name: Zhang, Renyun
name: Zhang, Xiaoyu
name: Zhang, Xiao
name: Tang, Jiyou
name: Liu, Xiaomin
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Neuroscience
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Mental Health
subject: Virology

description: Additional file 2. DNA sequencing results. A-I DNA sequencing results of individuals I: 1, I: 2, II: 1, II: 4, III: 1, III: 2, III: 3, III: 4, and III: 5.
From the triangular to the kagome lattice: Following the footprints of the ordered state
Creators: name: Arrachea, Liliana
name: Capriotti, Luca
name: Sorella, Sandro
Publisher: name: arXiv
Year: 2003
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the spin-1/2 Heisenberg model in a lattice that interpolates between the triangular and the kagome lattices. The exchange interaction along the bonds of the kagome lattice is J, and the one along the bonds connecting kagome and non-kagome sites is J', so that J'=J corresponds to the triangular limit and J'=0 to the kagome one. We use variational and exact diagonalization techniques. We analyze the behavior of the order parameter for the antiferromagnetic phase of the triangular lattice, the spin gap, and the structure of the spin excitations as functions of J'/J. Our results indicate that the antiferromagnetic order is not affected by the reduction of J' down to J'/J ~ 0.2. Below this value, antiferromagnetic correlations grow weaker, a description of the ground state in terms of a Neel phase renormalized by quantum fluctuations becomes inadequate, and the finite-size spectra develop features that are not compatible with antiferromagnetic ordering. However, this phase does not appear to be connected to the kagome phase as well, as the low-energy spectra do not evolve with continuity for J'-> 0 to the kagome limit. In particular, for any non-zero value of J', the latter interaction sets the energy scale for the low-lying spin excitations, and a gapless triplet spectrum, destabilizing the kagome phase, is expected.
description: 9 pages, 10 Figures. To be published in PRB
Electromagnetic Form Factors and the Hypercentral CQM
Creators: name: De Sanctis, M.
name: Giannini, M. M.
name: Santopinto, E.
name: Vassallo, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: New results about the electromagnetic form factors of the nucleon are obtained with a semirelativistic version of the hypercentral constituent quark model (hCQM) and a relativistic current. The complex structure of the constituent quarks is taken into account implicitly by means of phenomenological constituent quark form factors. We obtain a detailed reproduction of the experimental data up to $5 GeV^2$, moreover our findings about constituent quark root mean square radii are of the same order than the recent ones obtained analyzing the proton structure functions.
description: 11 pages, 4 figures
CSSTag: Optical Nanoscale Radar and Particle Tracking for In-Body and Microfluidic Systems with Vibrating Graphene and Resonance Energy Transfer
Creators: name: Gulbahar, Burhan
name: Memisoglu, Gorkem
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences

description: Single particle tracking systems monitor cellular processes with great accuracy in nano-biological systems. The emissions of the fluorescent molecules are detected with cameras or photodetectors. However, state-of-the-art imaging systems have challenges in the detection capability, collection and analysis of imaging data, penetration depth and complicated set-ups. In this article, a \textit{signaling based nanoscale acousto-optic radar and microfluidic particle tracking system} is proposed based on the theoretical design providing nanoscale optical modulator with vibrating F{ö}rster resonance energy transfer (VFRET) and vibrating CdSe/ZnS quantum dots (QDs) on graphene resonators. The modulator structure combines the significant advantages of graphene membranes having wideband resonance frequencies with QDs having broad absorption spectrum and tunable properties. The solution denoted by chirp spread spectrum (CSS) Tag (\textit{CSSTag}) utilizes classical radar target tracking approaches in nanoscale environments based on the capability to generate CSS sequences to identify different bio-particles. Numerical and Monte-Carlo simulations are realized showing the significant performance for multiple particle tracking (MPT) with a modulator of $10 \, μ$m $\times$ $10 \, μ$m $\times$ $10 \, μ$m dimension and several picograms of weight, signal to noise ratio (SNR) in the range $-7$ dB to $10$ dB and high speed tracking capability for microfluidic and in-body environments.
description: 13 double column pages, 9 figures, 1 table
Universality on thermodynamic relation with corrections in de Sitter black holes
Creators: name: Ko, Junbeom
name: Gwak, Bogeun
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We herein investigate the universal relation proposed by Goon and Penco in de Sitter black holes with electric charge or angular momentum. Our analysis focuses on the cosmological horizon, which only exists in de Sitter and Nariai spacetimes. Because the relation is given in a general case, the overall relationship may be valid. However, we elucidate the details of the relation, highlighting distinctions from those of (anti-)de Sitter black holes while affirming the validity of the relation. Furthermore, based on our analysis of Schwarzschild--de Sitter, Reissner--Nordström--de Sitter, and Kerr--de Sitter black holes, we demonstrate the universality of the thermodynamic relation in de Sitter black holes.
description: 19 pages, published in JHEP
Demonstration of a low loss, highly stable and re-useable edge coupler for high heralding efficiency and low g^(2) (0) SOI correlated photon pair sources
Creators: name: Du, Jinyi
name: Chen, George F. R.
name: Gao, Hongwei
name: Grieve, James A.
name: Tan, Dawn T. H.
name: Ling, Alexander
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report a stable, low loss method for coupling light from silicon-on-insulator (SOI) photonic chips into optical fibers. The technique is realized using an on-chip tapered waveguide and a cleaved small core optical fiber. The on-chip taper is monolithic and does not require a patterned cladding, thus simplifying the chip fabrication process. The optical fiber segment is composed of a centimeter-long small core fiber (UHNA7) which is spliced to SMF-28 fiber with less than -0.1 dB loss. We observe an overall coupling loss of -0.64 dB with this design. The chip edge and fiber tip can be butt coupled without damaging the on-chip taper or fiber. Friction between the surfaces maintains alignment leading to an observation of +-0.1 dB coupling fluctuation during a ten-day continuous measurement without use of any adhesive. This technique minimizes the potential for generating Raman noise in the fiber, and has good stability compared to coupling strategies based on longer UHNA fibers or fragile lensed fibers. We also applied the edge coupler on a correlated photon pair source and observed a raw coincidence count rate of 1.21 million cps and raw heralding efficiency of 21.3%. We achieved an auto correlation function g^(2) (0) as low as 0.0004 at the low pump power regime.
The Travelling Salesman Problem and Adiabatic Quantum Computation: An Algorithm
Creators: name: Kieu, Tien D.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: An explicit algorithm for the travelling salesman problem is constructed in the framework of adiabatic quantum computation, AQC. The initial Hamiltonian for the AQC process admits canonical coherent states as the ground state, and the target Hamiltonian has the shortest tour as the desirable ground state. Some estimates/bounds are also given for the computational complexity of the algorithm with particular emphasis on the required energy resources, besides the space and time complexity, for the physical process of (quantum) computation in general.
description: 23 pages, 9 figures
RJK Observations of the Optical Afterglow of GRB 991216
Creators: name: Garnavich, P. M.
name: Jha, S.
name: Pahre, M. A.
name: Stanek, K. Z.
name: Kirshner, R. P.
name: Garcia, M. R.
name: Szentgyorgyi, A. H.
name: Tonry, J. L.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present near-infrared and optical observations of the afterglow to the Gamma-Ray Burst (GRB) 991216 obtained with the F. L. Whipple Observatory 1.2-m telescope and the University of Hawaii 2.2-m telescope. The observations range from 15 hours to 3.8 days after the burst. The temporal behavior of the data is well described by a single power-law decay with index -1.36 +/-0.04, independent of wavelength. The optical spectral energy distribution, corrected for significant Galactic reddening of E(B-V)=0.626, is well fitted by a single power-law with index -0.58 +/- 0.08. Combining the IR/optical observations with a Chandra X-ray measurement gives a spectral index of -0.8 +/- 0.1 in the synchrotron cooling regime. A comparison between the spectral and temporal power-law indices suggest that a jet is a better match to the observations than a simple spherical shock.
description: Accepted to the Astrophysical Journal, 12 pages, 4 postscript figures
Kloosterman sums and Fourier coefficients of Eisenstein series
Creators: name: Kiral, Eren Mehmet
name: Young, Matthew P.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We derive explicit formulas for some Kloosterman sums on $Γ_0(N)$, and for the Fourier coefficients of Eisenstein series attached to arbitrary cusps, around a general Atkin-Lehner cusp.
description: This material originally appeared in the first version of our preprint arXiv:1701.07507, The fifth moment of modular $L$-functions
Electro-Fluidic Shuttle Memory Device: Classical Molecular Dynamics Study
Creators: name: Kang, Jeong Won
name: Hwang, Ho Jung
Publisher: name: arXiv
Year: 2003
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigated the internal dynamics of several electro-fluid shuttle memory elements, consisting of several media encapsulated in C640 nanocapsule. The systems proposed were (i) bucky shuttle memory devices (C36+ @C420 and C60+ @C420), (ii) encapsulated-ions shuttle memory devices ((13+)@C420, (3+ -C60-2+ )@C640 and (5+ -C60)@C640) and (iii) endo-fullerenes shuttle memory devices ((K+ @C60- F-@C60)@C640). Energetics and operating responses of several electro-fluidic shuttle memory devices, such as transitions between the two states of the C640 capsule, were examined by classical molecular dynamics simulations of the shuttle media in the C640 capsule under the external force fields. The operating force fields for the stable operations of the shuttle memory device were investigated.
The Vector Analyzing Power in Elastic Electron-Nucleus Scattering
Creators: name: Cooper, E. D.
name: Horowitz, C. J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The vector analyzing power A_n is calculated for elastic electron scattering from a variety of spin zero nuclei at energies from 14 MeV to 3 GeV. Time reversal symmetry insures that A_n vanish in first Born approximation. Therefore A_n depends on Coulomb distortions and can be large for scattering from heavy nuclei. The vector analyzing power is a potential source of systematic error for parity violation experiments. We find that A_n=-0.361 ppm for the kinematics of the Parity Radius Experiment (PREX) involving 850 MeV electrons scattering at six degrees from 208Pb. This is comparable to the parity violating asymmetry. However for HAPPEX He involving 3 GeV electrons scattering on 4He we find that A_n is very small.
description: 6 pages, 6 figures, submitted to Phys. Rev. C
The superconducting gaps in FeSe studied by soft point-contact Andreev reflection spectroscopy
Creators: name: Naidyuk, Yu. G.
name: Kvitnitskaya, O. E.
name: Gamayunova, N. V.
name: Bashlakov, D. L.
name: Tyutrina, L. V.
name: Fuchs, G.
name: Huehne, R.
name: Chareev, D. A.
name: Vasiliev, A. N.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: FeSe single crystals have been studied by soft point-contact Andreev-reflection spectroscopy. Superconducting gap features in the differential resistance dV/dI(V) of point contacts such as a characteristic Andreev-reflection double-minimum structure have been measured versus temperature and magnetic field. Analyzing dV/dI within the extended two-gap Blonder-Tinkham-Klapwijk model allows to extract both the temperature and magnetic field dependence of the superconducting gaps. The temperature dependence of both gaps is close to the standard BCS behavior. Remarkably, the magnitude of the double-minimum structure gradually vanishes in magnetic field, while the minima position only slightly shifts with field indicating a weak decrease of the superconducting gaps. Analyzing the dV/dI(V) spectra for 25 point contacts results in the averaged gap values = 1.8+/-0.4meV and =1.0+/-0.2 meV and reduced values 2/kTc=4.2+/-0.9 and 2/kTc=2.3+/-0.5 for the large (L) and small (S) gap, respectively. Additionally, the small gap contribution was found to be within tens of percent decreasing with both temperature and magnetic field. No signatures in the dV/dI spectra were observed testifying a gapless superconductivity or presence of even smaller gaps.
description: 8 pages, 4 figs., 3 tables. Shortened version without fig.4 and Table 3 is accepted for publication in Phys. Rev. B
title: ADCO, Cartulaire de Cîteaux pour les domaines de Beaune (XVe siècle), Cart. 177 (11 H 289), 197 folios, f. 0096
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2015
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire

description: Cartulaire de Cîteaux pour les domaines de Beaune (XVe siècle), Archives départementales de la Côte-d'Or, Cart. 177 (11 H 289), 197 folios, f. 0096, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de Cîteaux pour les possessions d’Izeure (XVe siècle), Archives départementales de la Côte-d'Or, Cart. 177 (11 H 289), 197 folios, f. 0096, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
The simplest origin of the big bounce and inflation
Creators: name: Popławski, Nikodem
Publisher: name: arXiv
Year: 2018
Subjects: subject: Popular Physics (physics.pop-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Torsion is a geometrical object, required by quantum mechanics in curved spacetime, which may naturally solve fundamental problems of general theory of relativity and cosmology. The black-hole cosmology, resulting from torsion, could be a scenario uniting the ideas of the big bounce and inflation, which were the subject of a recent debate of renowned cosmologists.
description: 5 pages, 2 figures; published version. This essay received an Honorable Mention in the 2018 Essay Competition of the Gravity Research Foundation
Nonlinear Rydberg exciton-polaritons in Cu$_2$O microcavities
Creators: name: Makhonin, Maxim
name: Delphan, Anthonin
name: Song, Kok Wee
name: Walker, Paul
name: Isoniemi, Tommi
name: Claronino, Peter
name: Orfanakis, Konstantinos
name: Rajendran, Sai Kiran
name: Ohadi, Hamid
name: Heckötter, Julian
name: Aßmann, Marc
name: Bayer, Manfred
name: Tartakovskii, Alexander
name: Skolnick, Maurice
name: Kyriienko, Oleksandr
name: Krizhanovskii, Dmitry
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Rydberg excitons (analogues of Rydberg atoms in condensed matter systems) are highly excited bound electron-hole states with large Bohr radii. The interaction between them as well as exciton coupling to light may lead to strong optical nonlinearity, with applications in sensing and quantum information processing. Here, we achieve strong effective photon-photon interactions (Kerr-like optical nonlinearity) via the Rydberg blockade phenomenon and the hybridisation of excitons and photons forming polaritons in a Cu$_2$O-filled microresonators. Under pulsed resonant excitation polariton resonance frequencies are renormalised due to the reduction of the photon-exciton coupling with increasing exciton density. Theoretical analysis shows that the Rydberg blockade plays a major role in the experimentally observed scaling of the polariton nonlinearity coefficient as $\propto n^{4.4 \pm 1.8}$ for principal quantum numbers up to n = 7. Such high principal quantum numbers studied in a polariton system for the first time are essential for realisation of high Rydberg optical nonlinearities, which paves the way towards quantum optical applications and fundamental studies of strongly-correlated photonic (polaritonic) states in a solid state system.
D-dimensional Ideal Quantum Gases in $Ar^{n}+Br^{-n}$ Potential
Creators: name: Jellal, Ahmed
name: Daoud, Mohammed
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The paper is concerned with thermostatistics of both $D$-dimensional Bose and Fermi ideal gases in a confining potential of type $Ar^{n}+Br^{-n}$. The investigation is performed in the framework of the semiclassical approximation. Some physical quantities for such systems are derived, like density of states, density profiles and number of particles. Bose-Einstein condensation (BEC) is discussed in the high and low temperature regimes.
description: 13 pages, Latex
Correlations at intermediate $p_T$
Creators: name: Hwa, Rudolph C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Correlations among hadrons in jets produced in heavy-ion collisions are discussed in the framework of the recombination model. The basic correlation at the parton level is among the shower partons arising from kinematical constraint. The resultant correlation between hadrons at intermediate $p_T$ is amazingly rich in characteristics.
description: 10 pages including 12 figures. Talk presented at the MIT Workshop on Correlations and Fluctuations in Relativistic Nuclear Collisions, April 2005
Certain functional identities on division rings
Creators: name: Lee, Tsiu-Kwen
name: Lin, Jheng-Huei
Publisher: name: arXiv
Year: 2024
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16R60 (Primary) 16R50, 16K40 (Secondary)

description: We study the functional identity $G(x)f(x)=H(x)$ on a division ring $D$, where $f \colon D\to D$ is an additive map and $G(X)\ne 0, H(X)$ are generalized polynomials in the variable $X$ with coefficients in $D$. Precisely, it is proved that either $D$ is finite-dimensional over its center or $f$ is an elementary operator. Applying the result and its consequences, we prove that if $D$ is a noncommutative division ring of characteristic not $2$, then the only solution of additive maps $f, g$ on $D$ satisfying the identity $f(x) = x^n g(x^{-1})$ with $n\ne 2$ a positive integer is the trivial case, that is, $f=0$ and $g=0$. This extends Catalano and Merchán's result in 2023 to get a complete solution.
Classification and Filtering of Spectra: A Case Study in Mineralogy
Creators: name: Moody, Jonathan
name: Silva, Ricardo
name: Vanderwaart, Joseph
name: Ramsey, Joseph
name: Glymour, Clark
Publisher: name: Carnegie Mellon University
Year: 2002
Subjects: subject: Philosophy
subject: FOS: Philosophy, ethics and religion

description: The ability to identify the mineral composition of rocks and soils is an important tool for the exploration of geological sites. Even though expert knowledge is commonly used for this task, it is desirable to create automated systems with similar or better performance. For instance, NASA intends to design robots that are sufficiently autonomous to perform this task on planetary missions. Spectrometer readings provide one important source of data for identifying sites with minerals of interest. Reflectance spectrometers measure intensities of light reflected from surfaces over a range of wavelengths. Spectral intensity patterns may in some cases be sufficiently distinctive for proper identification of minerals or classes of minerals. For some mineral classes, carbonates for example, specific short spectral intervals are known to carry a distinctive signature. Finding similar distinctive spectral ranges for other mineral classes is not an easy problem. We propose and evaluate data-driven techniques in two stages: first, evaluating algorithms to identify which components are probably present in a given rock; second, trying to improve this classification by automatically searching for spectral ranges optimized for specific classes of minerals. In one set of studies, we partition the whole interval of wavelengths available in our data into sub-intervals, or bins, and use a genetic algorithm to evaluate a candidate selection of subintervals. As an alternative to these computationally expensive search techniques, we present an entropy-based heuristic that gives higher scores for wavelengths more likely to distinguish between classes. Results are presented for four different classes, showing reasonable improvements in identifying some, but not all, of the mineral classes tested.
Persée
Creators: name: Quinault, Philippe
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2021
Subjects: Livret d'Opéra
Tragédie en musique
Académie royale de musique
Première génération d'opéras français
Paris

description: Tragédie représentée par l'Académie royale de musique en 1682. Les paroles sont de Philippe Quinault et la musique de Jean-Baptiste Lully. Le livret est consultable de manière publique par un portail qui donne accès simultanément au fac-similé, à une version du corpus qui respecte la graphie d’origine et une version du corpus normalisé exploitable à travers toutes les fonctionnalités de la plateforme TXM : http://fanum-txm.univ-fcomte.fr/txm/?command=edition&path=/LIVRETSOPERA&editions=facs,originale,normalis%C3%A9e&textid=09_PERSEE
description: Bibliographic citation: Cote (ELLIADD) : 09_PERSEE
description: URL TXM : http://fanum-txm.univ-fcomte.fr/txm/?command=edition&path=/LIVRETSOPERA&editions=facs,originale,normalis%C3%A9e&textid=09_PERSEE
The Central Gas Systems of Early-Type Galaxies Traced by Dust Feature: Based on the HST WFPC2 Archival Images
Creators: name: Tomita, Akihiko
name: Aoki, Kentaro
name: Watanabe, Masaru
name: Takata, Tadafumi
name: Ichikawa, Shin-ichi
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigated the central gas systems of E/S0 galaxies by making use of the WFPC2 images of the Hubble Space Telescope archive. We searched the gas systems that were traced by the dust with a new method of making color excess images in F555W - F814W (V-I). Out of 25 sample galaxies, we detected gas system in 14 galaxies. The dust was newly detected in two galaxies that were thought to contain no dust based on single band, pre-refurbishment data. The full extents of the gas systems are 0.1 to 3.5 kpc, and the masses of the gas, log M(gas) [M(solar)], are 4.2 to 7.2. The AGN activity is well correlated with existence of the gas systems. None of galaxies without the gas systems show the AGN activity. On the other hand, some galaxies with the gas systems show the AGN activity; optical AGN activities are shown in 5 out of 11 galaxies of which AGNs are optically studied, and radio activities are shown in 6 out of 14 galaxies. This shows that the AGN activity is driven with the gas system.
description: gzipped tarred file containing 7 files: Tomita.tex (main text, needs aaspp4.sty), Tomita.tab[1,2].tex (tables, need aj_pt4.sty), Tomita.fig [1a,1b,1c,2].ps (PS figures). To be appeared in AJ, Vol.120, No.1 (July 2000)
Energy-Delay Efficient Power Control in Wireless Networks
Creators: name: Zappone, Alessio
name: Sanguinetti, Luca
name: Debbah, Merouane
Publisher: name: arXiv
Year: 2017
Subjects: subject: Signal Processing (eess.SP)
subject: Information Theory (cs.IT)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: This work aims at developing a power control framework to jointly optimize energy efficiency (measured in bit/Joule) and delay in wireless networks. A multi-objective approach is taken to deal with both performance metrics, while ensuring a minimum quality-of-service to each user in the network. Each user in the network is modeled as a rational agent that engages in a generalized non-cooperative game. Feasibility conditions are derived for the existence of each player's best response, and used to show that if these conditions are met, the game best response dynamics will converge to a unique Nash equilibrium. Based on these results, a convergent power control algorithm is derived, which can be implemented in a fully decentralized fashion. Next, a centralized power control algorithm is proposed, which also serves as a benchmark for the proposed decentralized solution. Due to the non-convexity of the centralized problem, the tool of maximum block improvement is used, to trade-off complexity with optimality.
description: 13 pages, 6 figures, to appear on IEEE Transactions on Communications