cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Additional file 1: of Predicting interval and screen-detected breast cancers from mammographic density defined by different brightness thresholds
Creators: name: Nguyen, Tuong
name: Aung, Ye
name: Li, Shuai
name: Trinh, Nhut
name: Evans, Christopher
name: Baglietto, Laura
name: Krishnan, Kavitha
name: Dite, Gillian
name: Stone, Jennifer
name: English, Dallas
name: Song, Yun-Mi
name: Sung, Joohon
name: Jenkins, Mark
name: Southey, Melissa
name: Giles, Graham
name: Hopper, John
Publisher: name: figshare
Year: 2018
Subjects: subject: Space Science
subject: Medicine
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Plant Biology
subject: Computational Biology

description: Table S1. For interval and screen-detected invasive breast cancer, marginal risk estimates for Cumulus, Altocumulus and Cirrocumulus measures of dense area and percent density adjusted for age and BMI. Table S2. For interval and screen-detected invasive breast cancer, multivariable risk estimates for Cumulus, Altocumulus and Cirrocumulus measures of dense area and percent density adjusted for age and BMI. Table S3. Combined (all breast cancer); total (summary of interval and screen-detected); and -2Î of log likelihood (LL) for Cumulus, Altocumulus and Cirrocumulus measures of dense area and percent density adjusted for age and BMI and P value for the differences. (DOCX 36 kb)
Toxicity of fine and quasi-ultrafine particles: focus on the effects of extractable and non-extractable matter fractions
Creators: name: Badran, Ghidaa
name: Ledoux, Frédéric
name: Verdin, Anthony
name: Abbas, Imane
name: Roumie, Mohamed
name: Genevray, Paul
name: Lo Cuicide, Jean-Marc
name: Garcon, Guillaume
name: Courcot, Dominique
Publisher: name: Karlsruhe
Year: 2019
Subjects: fine particles
quasi-ultrafine particles
organic extractable matter
metabolic activation
genotoxicity

description: Air pollution represents today one of the major risk factors for human health. An important part of this threat is due to the presence in the atmosphere of fine particulate matter (PM$_{2.5}$). PM$_{2.5}$ forms a heterogeneous mixture of inorganic pollutants (metals, ions…), organic pollutants (volatile organic compounds (VOC), polycyclic aromatic hydrocarbons (PAHs), dioxins, polychlorobiphenyls (PCBs)…), and biological contaminants (pollen, bacteria, fungi…). To date many studies have demonstrated the toxicity of PAHs and some metals, but so far, no study has been able to clearly attribute the toxicological effects observed to a class of pollutants. Therefore, this study aims to determine the physicochemical characteristics of PM$_{2.5-0.3}$ and PM$_{0,3}$ and to compare the toxicity of native PM$_{2.5-0.3}$, organic fractions of fine (EOM$_{2.5-0.3}$) and quasi ultrafine particles (OEM$_{0.3}$), and PM$_{2.5-0.3}$ freed from this organic fraction (dPM$_{2.5-0.3}$) on BEAS-2B cells in culture. Fine and quasi-ultrafine particles were sampled in the southern suburb of Beirut, Lebanon. Chemical characterization showed that quasi-ultrafine particles were about 40 times more concentrated in PAHs than fines one suggesting a significant influence of anthropogenic activities and combustion sources (industries, road traffic and electric generators) on the emission of quasi-ultrafine particles. The influence of combustion sources was confirmed by investigation of PAHs diagnostic ratios. In addition, BEAS-2B cells exposed to PM$_{2.5-0.3}$, dPM$_{2.5-0.3}$, EOM$_{2.5-0.3}$ and EOM$_{0.3}$ lead to different results concerning metabolic activation of PAHs pathway and proteins expression of biomarkers implicated in the pathway of genotoxicity. Globally, EOM$_{0.3}$ was the most inducer for phase I and phase II enzymes implicated in the metabolic activation of PAHs (AhR, AhRR, ARNT, Cyp1A1, Cyp1B1, EPHX-1, GSTA-4) and EOM$_{0.3}$ induced DNA damage, felt by ATR and followed by a cascade of protein phosphorylations contributing to the cell cycle arrest (P21 and P53 induction).
Singularly Perturbed Self-Adjoint Operators in Scales of Hilbert spaces
Creators: name: Albeverio, S.
name: Kuzhel, S.
name: Nizhnik, L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: Spectral Theory (math.SP)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 47A10, 47A55

description: Finite rank perturbations of a semi-bounded self-adjoint operator A are studied in the scale of Hilbert spaces associated with A. A concept of quasi-boundary value space is used to describe self-adjoint operator realizations of regular and singular perturbations of A by the same formula. As an application the one-dimensional Schrödinger operator with generalized zero-range potential is considered in the Sobolev space W^p_2(\mathbb{R}), p\in\mathbb{N}.
description: 26 pages
Dark Energy as a Born-Infeld Gauge Interaction Violating the Equivalence Principle
Creators: name: Fuzfa, A.
name: Alimi, J. -M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the possibility that dark energy does not couple to gravitation in the same way than ordinary matter, yielding a violation of the weak and strong equivalence principles on cosmological scales. We build a transient mechanism in which gravitation is pushed away from general relativity by a Born-Infeld gauge interaction acting as an "Abnormally Weighting" (dark) Energy. This mechanism accounts for the Hubble diagram of far-away supernovae by cosmic acceleration and time variation of the gravitational constant while accounting naturally for the present tests on general relativity.
description: 5 pages, 3 figures, sequel of Phys. Rev. D 73 023520 (2006), to appear in Physical Review Letters
Optical bistability in Er-Yb co-doped phosphate glass microspheres at room temperature
Creators: name: Ward, J. M.
name: O'Shea, D. G.
name: Shortt, B. J.
name: Chormaic, S. Nic
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We experimentally demonstrate optical bistability in Er3+-Yb3+ phosphate glass microspheres at 295 K. Bistability is associated with both Er3+ fluorescence and lasing behavior, and chromatic switching. The chromatic switching results from an intrinsic mechanism exploiting the thermal coupling of closely-spaced energy levels, and occurs simultaneously with the intensity switching. A contrast ratio of 3.2 has been obtained for chromatic switching, and the intensity switching shows ratios of 2.4 for 550 nm and, 1.8 for the 660 nm fluorescence emissions, and 11 for the IR lasing at 1.5 um. Concurrent with these observations, we investigate a temperature dependent absorption of pump power which exhibits bistable behavior. The influences of the host matrix on lasing and fluorescence mechanisms are highlighted.
description: 22 pages, 6 figures
CEMETERY TOURISM IN LOURES: THE VALUE OF THE TRANSFIGURATION OF A CEMETERY
Creators: name: Assunção, Ana Paula
Publisher: name: Finisterra
Year: 2019

description: The western necropolis has been structured around a texture of signs and symbols that evoke the memory of the past, on the one hand, and, on the other hand, bring to the present ancient rituals of the search for eternity that have been reproduced since the 18th century. Taking into consideration constant memories, proto-memory, and the philosophy of memory, the fact is that the evocation of what is absent has led to different discourses such as its transfiguration into cultural and tourism assets on a global scale. Since the end of 1990s, the various uses of a cemetery have been emphasized and resulted in differentiated concepts and perspectives regarding tours at the site. As such, it is now common to consider there is a wide set of attitudes vis a vis death and its records. One of the reasons and motivations for this research is also the growth and diversification of the tourist offer. This article compiles the existing scientific information on tourism, specifically cemetery tourism, analyses the above-mentioned approaches; and uses as case study the Loures Municipal Cemetery, in order to draw reliable conclusions and contribute to scientific research in this specific field. One of the main finding aspects of the observation is the hypothesis regarding the possibility of developing cemetery tourism in non-Romantic cemeteries, as it is the case with the Loures Cemetery.
description: Finisterra, Ahead of Print
Off-equatorial orbits in strong gravitational fields near compact objects
Creators: name: Kovar, Jiri
name: Stuchlik, Zdenek
name: Karas, Vladimir
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Near a black hole or an ultracompact star, motion of particles is governed by strong gravitational field. Electrically charged particles feel also electromagnetic force arising due to currents inside the star or plasma circling around. We study a possibility that the interplay between gravitational and electromagnetic action may allow for stable, energetically bound off-equatorial motion of charged particles. This would represent well-known generalized Stormer's 'halo' orbits, which have been discussed in connection with the motion of dust grains in planetary magnetospheres. We demonstrate that such orbits exist and can be astrophysically relevant when a compact star or a black hole is endowed with a dipole-type magnetic field. In the case of Kerr-Newman solution, numerical analysis shows that the mutually connected gravitational and electromagnetic fields do not allow existence of stable halo orbits above the outer horizon of black holes. Such orbits are either hidden under the inner black-hole horizon, or they require the presence of a naked singularity.
description: 16 pages, 7 figures, accepted in Class. Quantum Grav. (2008)
Die einheimische Keramik aus dem Bereich des römischen Limeskastells Hainstadt am Main (Ldkr. Offenbach)
Creators: name: Beckmann, Bernhard
name: Beckmann, Christamaria
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Bonner Jahrbücher, Bd. 178 (1978): Bonner Jahrbücher
The influence of bicycle seat height on the mechanical function of the human gastrocnmeius, soleus, and tibialis anterior muscles during steady-rate cycling
Creators: name: Amoroso, Annita T.
Publisher: name: University of British Columbia
Year: 2009

description: Cycling has become a popular model in recent years for the study of muscle mechanics. The purpose of this study was to manipulate bicycle seat heights in order to perturbate muscle lengths and contraction velocities of three lower leg muscles, the soleus, medial gastrocnemius, and tibialis anterior, and to measure subsequently the effects on the muscles’ contribution to the cycling task as measured by EMG. Two groups of female subjects, riders (n=7) and non-riders (n=6), rode a bicycle mounted on a Schwinn Velodyne® at 200 Watts and cadence of 80 rpm. Individuals rode at a self-selected seat height, a 10% lowered, and 5 % raised seat position. It was hypothesized that responses in muscle EMG would differ on the basis of cycling experience but results showed this to not be true. It was also hypothesized that because the three muscles would operate at decreased contraction velocities at the low seat, the integrated EMG would be less for the lowest seat position. This hypothesis was based on the force-velocity relationship of muscle, where muscles operating at the lower end of the velocity spectrum can produce greater forces and thereby require the recruitment of fewer fibers to perform the same task. Although the soleus and medial gastrocnemius muscles did show a decrease in integrated EMG value with decreases in seat height, the tibialis anterior showed unexpected results, with the chosen seat height resulting in the lowest integrated EMG. This suggests either that EMG responses occurred independently from the calculated muscle lengths and contraction velocities or that electromyography may not be a sensitive enough tool to reflect changes in muscle force induced by altered muscle lengths and/or contraction velocities. As seat height decreased, it was also observed that the absolute muscle lengths increased for both the soleus and medial gastrocnemius muscles, but decreased for the tibialis anterior muscles. The absolute peak muscle lengths did not show a large variation across seat heights, with only an average difference of 2 %. Therefore, it is unlikely that the changes in muscle lengths affected the force production of the muscles to a significant extent. Although the muscle length and contraction velocity variables add considerably more insight into the mechanics of muscle action than either EMG or kinematic analyses of limb motion alone, their use in predicting muscle forces and muscular contributions to movement remains very limited. Furthermore, the choice of using the cycling model for investigating certain aspects of muscle mechanics should be examined further.
Discovery of atomic and molecular mid infra-red emission lines in off-nuclear regions of NGC 1275 and NGC 4696 with the Spitzer Space Telescope
Creators: name: Johnstone, R.
name: Hatch, N.
name: Ferland, G.
name: Fabian, A.
name: Crawford, C.
name: Wilman, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present Spitzer high-resolution spectra of off-nuclear regions in the central cluster galaxies NGC 1275 and NGC 4696 in the Perseus and Centaurus clusters, respectively. Both objects are surrounded by extensive optical emission-line filamentary nebulae, bright outer parts of which are the targets of our observations. The 10-37um spectra show strong pure rotational lines from molecular hydrogen revealing a molecular component to the filaments which has an excitation temperature of ~300-400K. The flux in the 0-0S(1) molecular hydrogen line correlates well with the strength of the optical lines, having about 3 per cent of the Halpha+[NII] emission. The 11.3um PAH feature is seen in some spectra. Emission is also seen from both low and high ionization fine structure lines. Molecular hydrogen cooler than ~400K dominates the mass of the outer filaments; the nebulae are predominantly molecular.
description: 15 pages. 13 figures. 12 tables. Accepted for publication in MNRAS. Moderate revision following referee's comments
Bericht über die Tätigkeit des Rheinischen Landesmuseums in Bonn in der Zeit vom 1. Januar 1951 bis 31. Dezember 1956
Creators: name: Böhner, Kurt
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Bonner Jahrbücher, Bd. 155/156, 2.1955/1956: Bonner Jahrbücher
The origins and development of the International Hockey League and its effects on the sport of professional ice hockey in North America
Creators: name: Mason, Daniel Scott
Publisher: name: University of British Columbia
Year: 2009

description: This study examined the development of the first professional ice hockey league, the International Hockey League, and its relationships with amateur and professional leagues and ideals, in both Canada and the United States, during the first decade of the twentieth century. Following the historical method, relying primarily on newspapers reports from the towns involved with the League during that period, a chronological-thematic narrative was written to analyze the following hypotheses: a) the League played an important role in the development of professional hockey in Canada, b) the League and its members reflected and affected attitudes toward professional hockey in Canada and the U.S., c) the operations and play levels of the League were the direct result of several influential individuals and events. The study was arranged into three distinct parts: an examination of background conditions existing in eastern Canada and ice hockey prior to the formation of the l.H.L.; a descriptive narrative of the l.H.L.s towns, operations and influential individuals; and an interpretation of selected issues. The study revealed that the formation and operations of the l.H.L. provided a significant influence on the trend toward the acceptance of professionalism in the Canadian senior hockey leagues. It was also determined that the factors associated with that acceptance led to the demise of the l.H.L.
Dense-Timed Petri Nets: Checking Zenoness, Token liveness and Boundedness
Creators: name: Abdulla, Parosh
name: Mahata, Pritha
name: Mayr, Richard
Publisher: name: arXiv
Year: 2006
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: F.1.1; F.3.1; F.4.1; F.4.3

description: We consider Dense-Timed Petri Nets (TPN), an extension of Petri nets in which each token is equipped with a real-valued clock and where the semantics is lazy (i.e., enabled transitions need not fire; time can pass and disable transitions). We consider the following verification problems for TPNs. (i) Zenoness: whether there exists a zeno-computation from a given marking, i.e., an infinite computation which takes only a finite amount of time. We show decidability of zenoness for TPNs, thus solving an open problem from [Escrig et al.]. Furthermore, the related question if there exist arbitrarily fast computations from a given marking is also decidable. On the other hand, universal zenoness, i.e., the question if all infinite computations from a given marking are zeno, is undecidable. (ii) Token liveness: whether a token is alive in a marking, i.e., whether there is a computation from the marking which eventually consumes the token. We show decidability of the problem by reducing it to the coverability problem, which is decidable for TPNs. (iii) Boundedness: whether the size of the reachable markings is bounded. We consider two versions of the problem; namely semantic boundedness where only live tokens are taken into consideration in the markings, and syntactic boundedness where also dead tokens are considered. We show undecidability of semantic boundedness, while we prove that syntactic boundedness is decidable through an extension of the Karp-Miller algorithm.
description: 61 pages, 18 figures
GESTÃO DE RISCOS DE DERRAMAMENTO DE HIDROCARBONETOS E DERIVADOS NA ZONA COSTEIRA: O CASO DO PORTO DE SANTOS
Creators: name: Galuzzi Da Silva, Marina Carrato
name: Mata-Lima, Herlander
Publisher: name: Finisterra
Year: 2019

description: O Porto de Santos vem sofrendo expansão das atividades, impactando a gestão urbana e ambiental do município de Santos, São Paulo, Brasil. O artigo analisa globalmente os contextos referentes à política e ações de proteção marítima e costeira contra derramamentos de hidrocarbonetos (oil spill) e derivados (HD), como subsídio à proposição de uma ferramenta integrada de gestão de riscos de derramamento de HD na zona costeira. A metodologia contempla a revisão e síntese do estado atual do conhecimento, inventariação das atividades portuárias, uso de métodos quantitativos e qualitativos para avaliação do risco, identificação dos fatores que o determinam, avaliação dos paradigmas do risco (Perigo-Exposição-Vulnerabilidade) e quantificação do risco. O estudo permitiu caracterizar a evolução temporal e a distribuição espacial de acidentes envolvendo derramamentos de HD, identificar fatores críticos de sucesso de uma ferramenta para gestão de riscos de derramamento de HD e avaliar o risco de derramamento de HD na zona costeira do Porto de Santos/SP, tendo obtido uma classificação global de risco médio. Palavras-chave: Zona costeira; derramamento de hidrocarbonetos e derivados; impacto ambiental; gestão de riscos sistêmicos; Porto de Santos.
description: Finisterra, Ahead of Print
Elicitação gramatical: Frases e verbos
Creators: name: Tamuxi, Luiz
name: Bardagil Mas, Bernat
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: Manoki language

description: Uma sessão de elicitação revisando frases e verbos com Luíz Tamuxi.
An elicitation session going over sentences and verbs with Luíz Tamuxi.
Estimated Payments Under the 2014 County Agricultural Risk Coverage Program in Maryland
Creators: name: Leathers, Howard
name: Goeringer, Paul
Publisher: name: Digital Repository at the University of Maryland
Year: 2015
Subjects: Farm Bill 2014
ARC Estimate Payments
Farm Policy
ARC-CO

description: Provides an estimate of potential payments by county for the 2014 Crop Year.
Commodity Program Choices by Maryland Farmers under the 2014 Farm Bill
Creators: name: Leathers, Howard
name: Goeringer, Paul
Publisher: name: Digital Repository at the University of Maryland
Year: 2015
Subjects: 2014 Farm Bill
Program Selection
ARC-CO
PLC
ARC-IC

description: Quick overview of which programs Maryland farmers signed up for with the 2014 Farm Bill.
A Review of Basic Energy Reconstruction Techniques in Liquid Xenon and Argon Detectors for Dark Matter and Neutrino Physics Using NEST
Creators: name: Szydagis, M.
name: Block, G. A.
name: Farquhar, C.
name: Flesher, A. J.
name: Kozlova, E. S.
name: Levy, C.
name: Mangus, E. A.
name: Mooney, M.
name: Mueller, J.
name: Rischbieter, G. R. C.
name: Schwartz, A. K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Detectors based upon the noble elements, especially liquid xenon as well as liquid argon, as both single- and dual-phase types, require reconstruction of the energies of interacting particles, both in the field of direct detection of dark matter (Weakly Interacting Massive Particles or WIMPs, axions, etc.) and in neutrino physics. Experimentalists, as well as theorists who reanalyze/reinterpret experimental data, have used a few different techniques over the past few decades. In this paper, we review techniques based on solely the primary scintillation channel, the ionization or secondary channel available at non-zero drift electric fields, and combined techniques that include a simple linear combination and weighted averages, with a brief discussion of the applications of profile likelihood, maximum likelihood, and machine learning. Comparing results for electron recoils (beta and gamma interactions) and nuclear recoils (primarily from neutrons) from the Noble Element Simulation Technique (NEST) simulation to available data, we confirm that combining all available information generates higher-precision means, lower widths (energy resolution), and more symmetric shapes (approximately Gaussian) especially at keV-scale energies, with the symmetry even greater when thresholding is addressed. Near thresholds, bias from upward fluctuations matters. For MeV-GeV scales, if only one channel is utilized, an ionization-only-based energy scale outperforms scintillation; channel combination remains beneficial. We discuss here what major collaborations use.
description: 42 Pages, 2 Tables, 11 Figures, 13 Equations
On the unlocking of color and flavor in color-superconducting quark matter
Creators: name: Nickel, Dominik
name: Alkofer, Reinhard
name: Wambach, Jochen
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The role of the strange quark mass for the phase structure of QCD at non-vanishing densities is studied by employing a recently developed self-consistent truncation scheme for the Dyson-Schwinger equations of the quark propagators in Landau gauge. Hereby the medium modification of the effective quark interaction by the polarization of gluons is implemented. Taking into account this effect results in significantly smaller dynamical quark masses at the Fermi surface. Due to this reduction the color-flavor locked phase is always the preferred color-superconducting phase at zero temperature and for a realistic strange quark mass.
description: 14 pages, 8 figures
Estimators for local non-Gaussianities
Creators: name: Creminelli, Paolo
name: Senatore, Leonardo
name: Zaldarriaga, Matias
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the Likelihood function of data given f_NL for the so-called local type of non-Gaussianity. In this case the curvature perturbation is a non-linear function, local in real space, of a Gaussian random field. We compute the Cramer-Rao bound for f_NL and show that for small values of f_NL the 3-point function estimator saturates the bound and is equivalent to calculating the full Likelihood of the data. However, for sufficiently large f_NL, the naive 3-point function estimator has a much larger variance than previously thought. In the limit in which the departure from Gaussianity is detected with high confidence, error bars on f_NL only decrease as 1/ln Npix rather than Npix^-1/2 as the size of the data set increases. We identify the physical origin of this behavior and explain why it only affects the local type of non-Gaussianity, where the contribution of the first multipoles is always relevant. We find a simple improvement to the 3-point function estimator that makes the square root of its variance decrease as Npix^-1/2 even for large f_NL, asymptotically approaching the Cramer-Rao bound. We show that using the modified estimator is practically equivalent to computing the full Likelihood of f_NL given the data. Thus other statistics of the data, such as the 4-point function and Minkowski functionals, contain no additional information on f_NL. In particular, we explicitly show that the recent claims about the relevance of the 4-point function are not correct. By direct inspection of the Likelihood, we show that the data do not contain enough information for any statistic to be able to constrain higher order terms in the relation between the Gaussian field and the curvature perturbation, unless these are orders of magnitude larger than the size suggested by the current limits on f_NL.
description: 26 pages. v2: added comments about the approximations used, published JCAP version
Extreme r-process enhanced stars at high metallicity in Fornax
Creators: name: Reichert, M.
name: Hansen, C. J.
name: Arcones, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present and discuss three extremely r-process enhanced stars located in the massive dwarf spheriodal galaxy Fornax. These stars are very unique with an extreme Eu enrichment ($1.25\le \mathrm{[Eu/Fe]} \le 1.45$) at high metallicities ($-1.3 \le \mathrm{[Fe/H]} \le -0.8$). They have the largest Eu abundances ever observed in a dwarf galaxy opening new opportunities to further understand the origin of heavy elements formed by the r-process. We derive stellar abundances of Co, Zr, La, Ce, Pr, Nd, Er, and Lu using 1-dimensional, local thermodynamic equilibrium (LTE) codes and model atmospheres in conjunction with state-of-the art yield predictions. We derive Zr in the largest sample of stars (105) known to date in a dwarf galaxy. Accurate stellar abundances combined with a careful assessment of the yield predictions have revealed three metal-rich stars in Fornax showing a pure r-process pattern. We define a new class of stars, namely Eu-stars, as r-II stars (i.e., [Eu/Fe]$>1$) at high metallicities (i.e., $\mathrm{[Fe/H]}\gtrsim -1.5$). The stellar abundance pattern contains Lu, observed for the first time in a dwarf galaxy, and reveals that a late burst of star formation has facilitated extreme r-process enhancement late in the galaxy's history ($<4$\,Gyr ago). Due to the large uncertainties associated with the nuclear physics input in the yield predictions, we cannot yet determine the r-process site leading to the three Eu-stars in Fornax. Our results demonstrate that extremely r-rich stars are not only associated with ultra faint low-mass dwarf galaxies, but can be born also in massive dwarf galaxies.
Hyperarbres, arbres enracinés et partitions pointées
Creators: name: Chapoton, Frédéric
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 05E25, O6A11

description: We compute the characteristic polynomials of the posets of hypertrees. We show that the generating series of the polynomials can be expressed using cyclic hypertrees. We also propose a conjecture on the action of the symmetric groups on the homology of these posets. On the other hand, we show that Vallette's poset of pointed partitions is homotopy equivalent to Pitman's poset of forests. The implicit common thema of the article is the combinatorics of the PreLie operad.
description: 19 pages, francais
Chiral photodetector based on GaAsN
Creators: name: Joshya, R. S.
name: Carrère, H.
name: Ibarra-Sierra, V. G.
name: Sandoval-Santana, J. C.
name: Kalevich, V. K.
name: Ivchenko, E. L.
name: Marie, X.
name: Amand, T.
name: Kunold, A.
name: Balocchi, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The detection of light helicity is key to several research and industrial applications from drugs production to optical communications. However, the direct measurement of the light helicity is inherently impossible with conventional photodetectors based on III-V or IV-VI semiconductors, being naturally non-chiral. The prior polarization analysis of the light by a series of often moving optical elements is necessary before light is sent to the detector. A method is here presented to effectively give to the conventional dilute nitride GaAs-based semiconductor epilayer a chiral photoconductivity in paramagnetic-defect-engineered samples. The detection scheme relies on the giant spin-dependent recombination of conduction electrons and the accompanying spin polarization of the engineered defects to control the conduction band population via the electrons' spin polarization. As the conduction electron spin polarization is, in turn, intimately linked to the excitation light polarization, the light polarization state can be determined by a simple conductivity measurement. This effectively gives the GaAsN epilayer a chiral photoconductivity capable of discriminating the handedness of an incident excitation light in addition to its intensity. This approach, removing the need of any optical elements in front of a non-chiral detector, could offer easier integration and miniaturisation. This new chiral photodetector could potentially operate in a spectral range from the visible to the infra-red using (In)(Al)GaAsN alloys or ion-implanted nitrogen-free III-V compounds.
description: 7 pages, 7 figures
Τα εκπαιδευτικά προγράμματα του χθές, τα εκπαιδευτικά προγράμματα του σήμερα και του αύριο
Creators: name: Τρίκου, Νικολέττα Παναγιώτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Μουσείο
Προσχολική και πρωτοσχολική ηλικία
Νέες τεχνολογίες
Museum
Preschool and preschool age
New technologies

description: Τα μουσεία έχουν αναμφισβήτητα εκπαιδευτικό ρόλο στη σημερινή εποχή. Μας φέρνουν σε επαφή με τα αντικείμενα της πολιτιστικής μας κληρονομιάς, και μας βοηθάνε να κατανοήσουμε την πορεία μας και την πορεία των άλλων γύρω μας. Δεν είχαν πάντα αυτό το ρόλο. Από τη στιγμή που δημιουργήθηκαν μέχρι τη σημερινή εποχή, άλλαξαν πολλούς ρόλους και υπηρέτησαν διαφορετικούς σκοπούς. Σε αυτή την εργασία μελετάται η διαδρομή των μουσείων και των εκπαιδευτικών προγραμμάτων στο χρόνο. Παράλληλα, με ενδιαφέρει το πώς οι νέες τεχνολογίες εισχώρησαν στον χώρο αυτό και άνοιξαν καινούριους δρόμους επικοινωνίας με το μαθητικό κοινό. Ιδιαίτερα, με απασχολεί ως κοινό η σχολική κοινότητα προσχολικής και πρωτοσχολικής ηλικίας, με την οποία έρχεται σε επαφή, πλέον και μέσω ιστοσελίδων. Τα εκπαιδευτικά προγράμματα και η χρήση ψηφιακών εφαρμογών έχουν αναβαθμίσει τη μαθησιακή διαδικασία που προσφέρουν τα μουσεία. Η παρούσα έρευνα περιλαμβάνει επιλεγμένα παραδείγματα ψηφιακού εκπαιδευτικού υλικού και προγραμμάτων, μέσα από ιστοσελίδες μουσείων όλου του κόσμου. Επιπλέον, ύστερα από επιτόπια έρευνα, μελετούνται, αναλύονται και αξιολογούνται τα εκπαιδευτικά προγράμματα έξι μουσείων της Θεσσαλονίκης και της Αθήνας. Τέλος, γίνονται προτάσεις εναλλακτικών εκπαιδευτικών προγραμμάτων, τα οποία αντιλαμβάνονται την μουσειακή επίσκεψη των παιδιών ως διαδραστική εμπειρία μάθησης και ψυχαγωγίας.
description: The museums undoubtedly have an educational role nowadays. They bring us in touch with the objects of our cultural heritage, and help us to understand the development of us and the others around. They have not always played this role. Since they were created, they changed many roles and served different purposes. In this work we study the development of museums and educational programs in time. At the same time, we focused on how new technologies have entered this area and opened up new ways of communicating with the student community. Especially, we put our interest on pre-school and early-school age group, which they are in contact with museum through web pages. Educational programs and the use of digital applications have upgraded the learning process offered by museums. This research includes selected examples of digital educational material and programs, through museum websites around the world. Moreover, after field research, the educational programs of six museums in Thessaloniki and Athens are being studied, analyzed and evaluated. Finally, proposals are made for alternative educational programs, which perceive the children's museum visit as an interactive learning and entertainment experience.
Becherzeitliche Häuser in der Gemarkung Ochtendung, Kreis Mayen-Koblenz
Creators: name: Fehr, Horst
name: Fiedler, L.
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Bonner Jahrbücher, Bd. 178 (1978): Bonner Jahrbücher
Enhanced Spontaneous Emission Into The Mode Of A Cavity QED System
Creators: name: Terraciano, M. L.
name: Knell, R. Olson
name: Freimund, D. L.
name: Orozco, L. A.
name: Clemens, J. P.
name: Rice, P. R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the light generated by spontaneous emission into a mode of a cavity QED system under weak excitation of the orthogonally polarized mode. Operating in the intermediate regime of cavity QED with comparable coherent and decoherent coupling constants, we find an enhancement of the emission into the undriven cavity mode by more than a factor of 18.5 over that expected by the solid angle subtended by the mode. A model that incorporates three atomic levels and two polarization modes quantitatively explains the observations.
description: 9 pages, 2 figures, to appear in May 2007 Optics Letters
Edge effect on the current-temperature characteristic of thermionic cathodes
Creators: name: Sitek, Anna
name: Torfason, Kristinn
name: Manolescu, Andrei
name: Valfells, Ágúst
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We perform a computational study, based on the molecular dynamics method, of the shape of Miram curves obtained from microscale planar diodes. We discuss the smooth transition from the source-limited to space-charge-limited regime due to the finite size of the emitter, i.e. the "knee" in the Miram curve. In our model we find that the smoothing occurs mostly due to the increased emission at the external edges of the emitting area, and that the knee becomes softer when the size of the emitting area decreases. We relate this to the recent work which has described how a heterogeneous work function similarly affects the Miram curve.
description: 5 pages, 3 figures
Σχολιασμένη μετάφραση του κεφαλαίου «Essenze o oli essenziali» από το βιβλίο του Francesco Capasso, Farmacognosia-Botanica, Chimica e Farmacologia delle Piante Medicinali
Creators: name: Μανίτσα, Ελευθερία Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Σχολιασμένη μετάφραση
Φαρμακογνωσία, φυτοθεραπεία
Αιθέρια έλαια
Annotated translation
Pharmacognosy, phytotherapy
Essences

description: Σκοπός της παρούσας εργασίας ήταν η εκπόνηση σχολιασμένης μετάφρασης ειδικού κειμένου από τα ιταλικά στα ελληνικά. Πρόκειται για το κεφάλαιο «Essenze o oli essenziali» από το εγχειρίδιο Farmacognosia- Botanica, Chimica e Farmacologia delle Piante Medicinali του Francesco Capasso, εκδόσεις Springer (2011). Το κείμενο που επελέγη υπάγεται στο θεματικό πεδίο της φαρμακογνωσίας και έχει ως υποπεδίο τη φυτοθεραπεία. Εκτός από τη μετάφραση του εν λόγω κειμένου, η παρούσα εργασία περιλαμβάνει ιταλο-ελληνικό γλωσσάριο των όρων που αποδελτιώθηκαν στο κείμενο, τεκμηρίωση των όρων με ορισμό ή επεξηγηματικό συγκείμενο και παραπομπή στις πηγές, παρουσίαση της ορολογικής έρευνας και τεκμηρίωσης, ανάλυση ορισμένων χαρακτηριστικών δυσκολιών μεταφραστικής/ορολογικής φύσης και σχολιασμό του τρόπου αντιμετώπισής τους. Tέλος, συμπεριλαμβάνεται παράρτημα όπου παρατίθεται ένα δείγμα του ad hoc σώματος κειμένων που καταρτίστηκε.
description: The aim of this master thesis was to produce an annotated translation of a specialized text from Italian into Greek. The selected text is the chapter entitled “Essenze o oli essenziali” from the book Farmacognosia- Botanica, Chimica e Farmacologia delle Piante Medicinali by Francesco Capasso, published by Springer (2011). The domain in which the text falls into is pharmacognosy and the sub-domain phytotherapy. Apart from the translation of the source text, this thesis also comprises an Italian-Greek glossary of the listed terms, documentation of the terms through the use of a definition or explanatory context, bibliographic references, presentation of terminology research, analysis of some characteristic translation/term difficulties and notes on the way these difficulties were resolved. Finally, there is also an index with a sample of the ad hoc corpus compiled for this thesis.
Quark-hadron phase transition in a magnetic field
Creators: name: Agasian, N. O.
name: Fedorov, S. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Quark-hadron phase transition in QCD in the presence of magnetic field is studied. It is shown that both the temperature of a phase transition and latent heat decrease compared to the case of zero magnetic field. The phase diagram in the plane temperature--magnetic field is presented. Critical point, T_\ast=104 MeV, \sqrt{eH_\ast}=600 MeV, for which the latent heat goes to zero, is found.
description: 10 pages, 2 figures. v2: new discussion and references added; version to appear in Phys.Lett.B
Οδηγός Χρηματοδότησης Επιχειρήσεων
Creators: name: Γουλάπτση, Μαρία Πέτρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Επιχείρηση
Επένδυση
Χρηματοδότηση
Business
Investment
Financing

description: Στη παρούσα διπλωματική εργασία επιχειρήθηκε η συγκέντρωση όλων των απαραίτητων πληροφοριών και στοιχείων, για την δημιουργία έγκυρου και πλήρους οδηγού-βοηθήματος χρηματοδότησης των επιχειρήσεων. Αρχικά, προσεγγίστηκαν θεωρητικά έννοιες αλλά και τρόποι εύρεσης χρηματοδότησης. Στη συνέχεια καταγράφονται όλες οι διαθέσιμες εναλλακτικές επιλογές χρηματοδότησης επιχειρήσεων, αλλά και οι δυνατότητες επιδότησης και επιχορήγησης μέσω ευρωπαϊκών προγραμμάτων, οι οποίες είναι ενεργές κατά την συγγραφή της διπλωματικής εργασίας. Οι δυνατότητες είναι πολλές, από τον τραπεζικό δανεισμό, τα χρηματοδοτικά δάνεια, τη συμμετοχική χρηματοδότηση, τους business angels, μέχρι την ένταξη σε Αναπτυξιακό Νόμο ή σε κάποια πρόσκληση του νέου Επιχειρησιακού Προγράμματος. Με τη δημιουργία αυτού του οδηγού συμπεραίνουμε ότι μόνο η ανάπτυξη και οι επενδύσεις είναι αυτές που μπορούν να οδηγήσουν, σε αύξηση της επιχειρηματικότητας, της ανταγωνιστικότητας, της απασχόλησης και της καινοτομίας στην Ελλάδα
description: This master thesis has attempted to gather all the necessary information and data, in addition to creating a valid and complete guide-aid for business financing. Initially, theoretical concepts and ways of finding funding were approached. All available business financing options are then listed, as well as grant opportunities through European programs that were opened when this diploma thesis was written. The options varied, including banks loans, venture capital, crowd funding, business angels and joining the Development Law or invitation of the new Operational Program. By creating this guide, we conclude that only growth and investment are those that can lead to increased entrepreneurship, competitiveness, employment and innovation in Greece.
Gravitational bending of light by planetary multipoles and its measurement with microarcsecond astronomical interferometers
Creators: name: Kopeikin, Sergei
name: Makarov, Valeri
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: General relativistic deflection of light by mass, dipole, and quadrupole moments of gravitational field of a moving massive planet in the Solar system is derived. All terms of order 1 microarcsecond are taken into account, parametrized, and classified in accordance with their physical origin. We calculate the instantaneous patterns of the light-ray deflections caused by the monopole, the dipole and the quadrupole moments, and derive equations describing apparent motion of the deflected position of the star in the sky plane as the impact parameter of the light ray with respect to the planet changes due to its orbital motion. The present paper gives the physical interpretation of the observed light-ray deflections and discusses the observational capabilities of the near-future optical (SIM) and radio (SKA) interferometers for detecting the Doppler modulation of the radial deflection, and the dipolar and quadrupolar light-ray bendings by the Jupiter and the Saturn.
description: 33 pages, 10 figures, accepted to Phys. Rev. D
New unexpected flow patterns in the problem of the stellar wind interaction with the interstellar medium: stationary ideal-MHD solutions
Creators: name: Korolkov, Sergey
name: Izmodenov, Vladislav
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The astropause (heliopause for the Sun) is the tangential discontinuity separating the stellar wind from the interstellar plasma. The global shape of the heliopause is a matter of debates. Two types of the shape are under discussion: comet-like and tube-like. In the second type the two-jets oriented toward the stellar rotation axis are formed by the action of azimuthal component of the stellar magnetic field. We explore a simplified global astrosphere in which: (1) the surrounding and moving with respect to the star circumstellar medium is fully ionized, (2) the interstellar magnetic field is neglected, (3) the radial component of the stellar magnetic field is neglected as compared with the azimuthal component, (4) the stellar wind outflow is spherically symmetric and supersonic. We present the results of numerical 3D MHD modelling and explore how the global structure depends on the gas-dynamic Mach number of the interstellar flow, $M_\infty$, and the Alfvenic Mach number in the stellar wind. It is shown that the astropause has a tube-like shape for small values of $M_\infty$. The wings of the tube are distorted toward the tail as larger as larger the Mach number is. The new (to our knowledge) result is the reverse interstellar flow in the vicinity of the astropause in the tail. The larger the interstellar Mach number is the narrower the reverse flow is. At some values of the Mach number the stellar wind overcomes the reverse interstellar flow and moves out in downwind. In this regime the astropause changes its topology from tube-like to sheet-like.
description: Typos have been corrected compared to the previous version. Added some clarifications and links to other authors. Results have not been changed
Indirect study of 19Ne states near the 18F+p threshold
Creators: name: de Sereville, N.
name: Coc, A.
name: Angulo, C.
name: Assuncao, M.
name: Beaumel, D.
name: berthoumieux, E.
name: Bouzid, B.
name: Cherubini, S.
name: Couder, M.
name: Demaret, P.
name: Santos, F de Oliveira
name: Figuera, P.
name: Fortier, S.
name: Gaelens, M.
name: Hammache, F.
name: Kiener, J.
name: Lefebvre-Schuhl, A.
name: Labar, D.
name: Leleux, P.
name: Loiselet, M.
name: Ninane, A.
name: Ouichaoui, S.
name: Ryckewaert, G.
name: Smirnova, N.
name: Tatischeff, V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The early E < 511 keV gamma-ray emission from novae depends critically on the 18F(p,a)15O reaction. Unfortunately the reaction rate of the 18F(p,a)15O reaction is still largely uncertain due to the unknown strengths of low-lying proton resonances near the 18F+p threshold which play an important role in the nova temperature regime. We report here our last results concerning the study of the d(18F,p)19F(alpha)15N transfer reaction. We show in particular that these two low-lying resonances cannot be neglected. These results are then used to perform a careful study of the remaining uncertainties associated to the 18F(p,a)15O and 18F(p,g)19Ne reaction rates.
description: 18 pages, 8 figures. Accepted in Nuclear Physics A
Constraints on Large-Scale Magnetic Fields in the Intergalactic Medium Using Cross-Correlation Methods
Creators: name: Amaral, Ariel
name: Vernstrom, Tessa
name: Gaensler, Bryan M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Large-scale coherent magnetic fields in the intergalactic medium are presumed to play a key role in the formation and evolution of the cosmic web, and in large scale feedback mechanisms. However, they are theorized to be extremely weak, in the nano-Gauss regime. To search for a statistical signature of these weak magnetic fields we perform a cross-correlation between the Faraday rotation measures of 1742 radio galaxies at $z > 0.5$ and large-scale structure at $0.1 < z< 0.5$, as traced by 18 million optical and infrared foreground galaxies. No significant correlation signal was detected within the uncertainty limits. We are able to determine model-dependent $3 σ$ upper limits on the parallel component of the mean magnetic field strength of filaments in the intergalactic medium of $\sim 30 \ \mathrm{nG}$ for coherence scales between $1$ and $2.5 \ \mathrm{Mpc}$, corresponding to a mean upper bound RM enhancement of $\sim 3.8 \ \mathrm{rad/m^{2}}$ due to filaments along all probed sight-lines. These upper bounds are consistent with upper bounds found previously using other techniques. Our method can be used to further constrain intergalactic magnetic fields with upcoming future radio polarization surveys.
description: 15 pages, 8 figures, MNRAS, in press