cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Millimeter wave analysis of the dielectric properties of oil shales
Creators: name: Scales, John A.
name: Batzle, Michael
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Natural sedimentation processes give rise to fine layers in shales. If these layers alternate between organic-rich and organic-poor sediments, then the contrast in dielectric properties gives rise to an effective birefringence as the presence of hydrocarbons suppresses the dielectric constant of the host rock. We have measured these effects with a quasioptical millimeter wave setup that is rapid and noncontacting. We find that the strength of this birefringence and the overall dielectric permittivity provide two useful diagnostic of the organic content of oil shales.
description: to appear in Applied Physics Letters
Predicting Nielsen Ratings from Pilot Episodes Scripts: A Content Analytical Approach
Creators: name: Hunter, Starling
Publisher: name: Series - International Journal of TV Serial Narratives
Year: 2019
Subjects: pilot episode; script; screenplay; television; television series; television ratings; Nielsen ratings; statistical analysis; panel data; regression analysis; content analysis; network analysis; semantic network analysis

description: Textual and content data were extracted from the pilot episode scripts of 183 new, dramatic television series and used to predict the 18-49 demo ratings for the first five episodes of each series’ first season. As expected, the originality of a series’ premise, the track record of success of the its creator(s), and the cognitive complexity of its pilot episode script each explain a statistically significant proportion of the variance in the Nielsen ratings over the first five episodes.
description: Series - International Journal of TV Serial Narratives, Vol 5, No 1 (2019)
Insights into serial narratives through qualitative modelling techniques
Creators: name: Rocchi, Marta
name: Chiarello, Jessica
Publisher: name: Series - International Journal of TV Serial Narratives
Year: 2019
Subjects: Narrative ecosystem; Qualitative modeling; Serial narratives

description: Serial narratives can often be seen as narrative ecosystems with a long lifespan and whose transformation and evolution can be based on external factors (relating to their media, economic and reception contexts) as well as internal ones (narrative aspects, the evolution of characters and of the plot). Considering the paradigm of narrative ecosystems, this work is a preliminary investigation regarding serial narratives, conducted through the application of a qualitative modeling technique (loop analysis), developed within the ecological domain. Loop analysis is proposed as an innovative method for the analysis of narrative ecosystems, and its aim is to reconstruct their evolutionary dynamics through the implementation of models able to consider the heterogeneity of all the possible variables (narrative, text, productive, economic spheres etc.). This paper presents two goals: (i) highlighting, through a step-by-step methodological process, the systemic approach of loop analysis, which could help to identify successful trends by modeling them in an evaluative/predictive perspective, and (ii) preliminarily applying said method to the TV series Game of Thrones (HBO, 2011-), which will be considered as a case study.
description: Series - International Journal of TV Serial Narratives, Vol 5, No 1 (2019)
H Επιστημονική Έρευνα στα Τετράδια Ανάλυσης Δεδομένων
Creators: name: Koutsoupias, Nikos
name: Skeberis, Georgios
name: Nihoritis, Georgios
Publisher: name: Zenodo
Year: 2023

description: H Επιστημονική Έρευνα στα Τετράδια Ανάλυσης ΔεδομένωνΝ. Κουτσουπιάς, Γ. Σκεμπέρης, Γ. ΝιχωρίτηςΠανεπιστήμιο Δυτικής ΜακεδονίαςΤο επιστημονικό σωματείο της Ελληνικής Εταιρίας Ανάλυσης Δεδομένων πρωτοκυκλοφόρησε το 2002επιστημονικό περιοδικό με τίτλο «Τετράδια Ανάλυσης Δεδομένων» και σκοπό τη δημοσίευση σχετικώνερευνητικών μελετών, αλλά και αξιόλογων εργασιών που παρουσιάζονται στα συνέδρια που οργανώνει.Η εργασία αυτή διερευνά στα περιεχόμενα των τευχών του περιοδικού τις εξελίξεις στο χώρο τωνμεθόδων και των εφαρμογών της Ανάλυσης Δεδομένων στην Ελλάδα, αξιοποιώντας στοιχεία όπως τοέτος έκδοσης, οι συγγραφικές συνεργασίες, τα πεδία έρευνας κ.α. Για την έρευνά μας αυτή, μεταξύάλλων, αξιοποιήθηκαν μέθοδοι της ανάλυσης δεδομένων και έγινε χρήση του λογισμικού S-pro.

Τόμος Περιλήψεων

7o Πανελλήνιο Συνέδριο Ανάλυσης Δεδομένων - Καβάλα 2013

 

Scientific Research in the Data Analysis BulletinΝ. Koutsoupias, G. Skeberis, G. NihoritisUniversity of Western MacedoniaThe Greek Society of Data Analysis in 2002 first circulated its scientific journal entitled “Data AnalysisBulletin” aiming in publishing related research along with important articles presented in its biennialconferences. This work studies the contents of the journal in an effort to depict the current Greekresearch landscape relating to theory and applications of Data Analysis methods, taking into accountarticle publication dates, authors, fields of study etc. For the purposes of this research we used methodsof data analysis as implemented in S-pro.

Volume of Abstracts

7th Data Analysis Conference  - Greek Society of Data Analysis - Kavala 2013
Analysis of the Effectiveness of Face-Coverings on the Death Ratio of COVID-19 Using Machine Learning
Creators: name: Lafzi, Ali
name: Boodaghi, Miad
name: Zamani, Siavash
name: Mohammadshafie, Niyousha
name: Hasti, Veeraraghava Raju
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The recent outbreak of the COVID-19 led to the death of millions of people worldwide. To stave off the spread of the virus, the authorities in the US employed different strategies, including the mask mandate order issued by the states' governors. In the current work, we defined a parameter called the average death ratio as the monthly average of the number of daily deaths to the monthly average number of daily cases. We utilized survey data to quantify people's abidance by the mask mandate order. Additionally, we implicitly addressed the extent to which people abide by the mask mandate order that may depend on some parameters like population, income, and education level. Using different machine learning classification algorithms, we investigated how the decrease or increase in death ratio for the counties in the US West Coast correlates with the input parameters. The results showed that for most counties there, the mask mandate order decreased the death ratio reflecting the effectiveness of this preventive measure on the West Coast. Additionally, the changes in the death ratio demonstrated a noticeable correlation with the socio-economic condition of each county. Moreover, the results showed a promising classification accuracy score as high as around 90%.
Inferring Plasma Flows in the Solar Photosphere & Chromosphere using Deep Learning and Surface Observations
Creators: name: Tremblay, Benoit
name: Reardon, Kevin
name: Attié, Raphaël
name: Kazachenko, Maria
name: Asensio Ramos, Andrés
name: Tilipman, Dennis
Publisher: name: Zenodo
Year: 2021
Subjects: Deep Learning
Granulation
MHD Simulations
Sun
Velocities

description: Direct measurements of plasma motions are limited to the line-of-sight component at the Sun's surface. Multiple tracking and inversion methods were developed to infer the transverse motions from observational data. Recently, the fully convolutional DeepVel & DeepVelU neural networks were trained in conjunction with detailed magnetohydrodynamics (MHD) simulations of the Quiet Sun and sunspots to recover the instantaneous depth/height-dependent transverse velocity vector from a combination of intensitygrams, magnetograms and/or Dopplergrams of the solar surface. Through this supervised learning approach, the neural network attempts to emulate the synthetic flows, and by extension the physics, from the numerical simulation it was presented during its training, i.e. its outputs are model-dependent and may be subjected to biases. Although simulations have become increasingly realistic, the validity of flows inferred by DeepVel or DeepVelU is subject to debate when using real observational data as input. As a test, we use white light images of the Quiet Sun photosphere (optical depth tau=1) produced by the Interferometric BIdimensional Spectropolarimeter (IBIS) installed at the Dunn Solar Telescope to infer plasma motions approx. 150-200 km above the surface (i.e., near the transition between the photosphere and the chromosphere) using DeepVel. We discuss work in progress comparing the neural network estimates to the optical flows determined from a time series of observational data formed near 150-200 km above the surface. Optical flows do not directly track actual transverse plasma motions, but are correlated with physical flows over certain spatial and temporal scales.
description: Recording available for viewing: https://www.dropbox.com/s/f4x1mchlnb1cjh2/zoom_0.mp4?dl=0
“All is changing”: Interview with Joachim Kosack on Deutschland83 and transformations of German TV series industry
Creators: name: Krauß, Florian
Publisher: name: Series - International Journal of TV Serial Narratives
Year: 2019
Subjects: deutschland83; interview; german TV; Joachim Kosack

description: Series - International Journal of TV Serial Narratives, Vol 5, No 1 (2019)
Abelian subgroups of Garside groups
Creators: name: Lee, Eon-Kyung
name: Lee, Sang Jin
Publisher: name: arXiv
Year: 2006
Subjects: subject: Geometric Topology (math.GT)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20F36; 20F10

description: In this paper, we show that for every abelian subgroup $H$ of a Garside group, some conjugate $g^{-1}Hg$ consists of ultra summit elements and the centralizer of $H$ is a finite index subgroup of the normalizer of $H$. Combining with the results on translation numbers in Garside groups, we obtain an easy proof of the algebraic flat torus theorem for Garside groups and solve several algorithmic problems concerning abelian subgroups of Garside groups.
description: This article replaces our earlier preprint "Stable super summit sets in Garside groups", arXiv:math.GT/0602582
Slashburning effects on tree growth and nutrients in the Coastal Western Hemlock zone, Southern British Columbia : longer term trends
Creators: name: Curran, Michael Patrick
Publisher: name: University of British Columbia
Year: 2009

description: To investigate regional (southern Coastal Western Hemlock biogeoclimatic zone) trends in fire effects on longer-term tree growth and nutrient levels, 52 research blocks were resampled in five subzones, from Long Beach (west coast of Vancouver Island) to Mission Tree Farm (50 km east of Vancouver). These were on 1938 to 1985 burns studied by the Canadian Forest Service (CFS), B.C. Ministry of Forests, industry, and the University of British Columbia. Five new 1985 research blocks were monitored in cooperation with MacMillan Bloedel Ltd. and CFS. Blocks studied in detail had up to 40 impact monitoring plots (IMPlots) in each block; over 900 IMPlots were sampled for tree growth and nutrient status. Overall regional (zonal) burned versus unburned trends (38 block pairs) were analyzed using ANOVA and contrasts. Different from what had been reported in the literature, a new finding is that strong regional trends are evident and the null hypothesis (no regional trends) has been rejected for Douglas-fir (Pseudotsuga menziesii) total height growth, three year height increment, foliar B, Ca, and K; and for western hemlock foliar B, Mg, and Fe. Longer-term effects, evident or suggested, are positive for Douglas-fir (the seral species on the study sites), and negative for the climax species, western hemlock (Tsuga heterophylla) and western redcedar (Thuja plicata)). Few regional soil nutrient trends existed on two research blocks (15 and 30 years postburn). Five IMPlot fire impact rating systems were developed for different determining factors, ranging from simple measures of forest floor reduction to relative estimates of mineral ash loading. The rating systems and IMPlot approach are new to this type of study, enabling the analysis of differing studies as one large, regional data set. There was a lack of significant regional trends with the rated impact levels, similar to results reported in the few literature examples. Some general trends were evident; for example, Douglas-fir growth and nutrition appear negatively related to forest floor depth. In conclusion, slashburning appears to be a useful tool in terms of longer-term Douglas fir growth and nutrient levels on the site conditions studied. For western hemlock and western redcedar, results suggest negative effects.
Scaling relations and mass calibration of the X-ray luminous galaxy clusters at z~0.2: XMM-Newton observations
Creators: name: Zhang, Y. -Y.
name: Finoguenov, A.
name: Boehringer, H.
name: Kneib, J. -P.
name: Smith, G. P.
name: Czoske, O.
name: Soucail, G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the X-ray properties and scaling relations of a flux-limited morphology-unbiased sample of 12 X-ray luminous galaxy clusters at redshift around 0.2 based on XMM-Newton observations. The scaled radial profiles are characterized by a self-similar behavior at radii outside the cluster cores (>0.2 r500) for the temperature, surface brightness, entropy, gas mass and total mass. The cluster cores contribute up to 70% of the bolometric X-ray luminosity. The X-ray scaling relations and their scatter are sensitive to the presence of the cool cores. Using the X-ray luminosity corrected for the cluster central region and the temperature measured excluding the cluster central region, the normalization agrees to better than 10% for the cool core clusters and non-cool core clusters, irrelevant to the cluster morphology. No evolution of the X-ray scaling relations was observed comparing this sample to the nearby and more distant samples. With the current observations, the cluster temperature and luminosity can be used as reliable mass indicators with the mass scatter within 20%. Mass discrepancies remain between X-ray and lensing and lead to larger scatter in the scaling relations using the lensing masses (e.g. ~40% for the luminosity--mass relation) than using the X-ray masses (<20%) due to the possible reasons discussed.
description: 38 pages, 25 figures, 6 tables, A&A, in press (references updated)
Gex & Decosterd, Frères
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1834

description: Ort: Bahia
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Biphoton interference with a quantum dot entangled light source
Creators: name: Stevenson, R. M.
name: Hudson, A. J.
name: Young, R. J.
name: Atkinson, P.
name: Cooper, K.
name: Ritchie, D. A.
name: Shields, A. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We demonstrate optical interferometry beyond the limits imposed by the photon wavelength using 'triggered' entangled photon pairs from a semiconductor quantum dot. Interference fringes of the entangled biphoton state reveals a periodicity half of that obtained with the single photon, and much less than that of the pump laser. High fringe visibility indicates that biphoton interference is less sensitive to decoherence than interference of two sequential single photons. The results suggest that quantum interferometry may be possible using a semiconductor LED-like device.
description: Published with open access in Optics Express
Nuclear cross sections in $^{16}\text{O}$ for $β$ beam neutrinos at intermediate energies
Creators: name: Singh, S. K.
name: Athar, M. Sajjad
name: Ahmad, Shakeb
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The nuclear cross sections for charged lepton production induced by $β$ beam neutrinos (anti-neutrinos) in $^{16}$O have been presented at intermediate energies corresponding to the Lorentz boost factor $γ<250 (150)$. The calculations for quasi-elastic lepton production includes the effect of Pauli blocking, Fermi motion and renormalization of weak transition strengths in the nuclear medium. The calculations for the inelastic lepton production is done in the $Δ$ dominance model. The renormalization of $Δ$ properties in a nuclear medium and final state interactions of pions with the final nucleus are taken into account. The results may be useful in performing feasibility studies for the future CERN-FREJUS base line neutrino oscillation experiments.
description: 6 pages, 3 figures
High-Mobility p-Channel Wide Bandgap Transistors Based on h-BN/Diamond Heterostructures
Creators: name: Sasama, Yosuke
name: Kageura, Taisuke
name: Imura, Masataka
name: Watanabe, Kenji
name: Taniguchi, Takashi
name: Uchihashi, Takashi
name: Takahide, Yamaguchi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Field-effect transistors made of wide-bandgap semiconductors can operate at high voltages, temperatures and frequencies with low energy losses, and have been of increasing importance in power and high-frequency electronics. However, the poor performance of p-channel transistors compared with that of n-channel transistors has constrained the production of energy-efficient complimentary circuits with integrated n- and p-channel transistors. The p-type surface conductivity of hydrogen-terminated diamond offers great potential for solving this problem, but surface transfer doping, which is commonly believed to be essential for generating the conductivity, limits the performance of transistors made of hydrogen-terminated diamond because it requires the presence of ionized surface acceptors, which cause hole scattering. Here, we report on fabrication of a p-channel wide-bandgap heterojunction field-effect transistor consisting of a hydrogen-terminated diamond channel and hexagonal boron nitride ($h$-BN) gate insulator, without relying on surface transfer doping. Despite its reduced density of surface acceptors, the transistor has the lowest sheet resistance ($1.4$ k$Ω$) and largest on-current ($1600$ $μ$m mA mm$^{-1}$) among p-channel wide-bandgap transistors, owing to the highest hole mobility (room-temperature Hall mobility: $680$ cm$^2$V$^{-1}$s$^{-1}$). Importantly, the transistor also shows normally-off behavior, with a high on/off ratio exceeding $10^8$. These characteristics are suited for low-loss switching and can be explained on the basis of standard transport and transistor models. This new approach to making diamond transistors paves the way to future wide-bandgap semiconductor electronics.
description: 56 pages, 18 figures
The Kepler field as evidence for metallicity-dependent spin evolution
Creators: name: Amard, L.
name: Roquette, J.
name: Matt, S.P.
Publisher: name: Zenodo
Year: 2021
Subjects: Cool Stars on the main sequence
Stellar Rotation
Stellar metallicity
Low-mass stars

description: The spin-down of main sequence cool stars with time can be used as a tool to provide stellar ages under certain conditions. Large photometric surveys such as Kepler, TESS or even GAIA, thus relies on rotation period measurement to estimate the age of cool main sequence stars. Intriguingly, Davenport & Covey (2018) discovered a sequence of cool slower-than-expected rotators in the HR diagram suggesting a deviation from classical gyrochronology from an unknown source. This year, Amard & Matt (2020) and Claytor et al. (2020) showed that metal-rich stars are likely slower rotators on the main sequence due to being cooler and having thicker convective envelope. Using a compilation of mid-to-high resolution spectroscopic surveys of the Kepler field (LAMOST, APOGEE), we are now able to explore the effect of chemical composition on a population of rotating stars. Combined with Kepler and Gaia observations, and a grid of rotating stellar evolution model over a large range of mass and metallicity, this new sample allows us to reproduce the feature noticed by Davenport & Covey (2018) and to a later extent to explore and constrain the link between chemical composition, mass, rotation and activity.
description: {"references": ["Amard, Louis et al. (2020) associated to arXiv:2009.11785", "Amard; Louis & Matt, Sean, P. (2020) associated to arXiv:2001.10404", "Amard, Louis et al. (2019) associated to arXiv:1905.08516", "Claytor, Zachary et al. (2020) associated to arXiv:1911.04518", "Davenport, Jim & Covey, Kevin (2018) associated to arXiv:1807.09841", "Reinhold, Timo et al. (2020) associated to arXiv:2005.01401", "Suzuki, Takeru, K. (2018) associated to arXiv:1710.04478v2", "Witzke, Veronika et al. (2020) associated to arXiv:2001.01934v1", "Zhang, Jinghua et al. (2020) associated to arXiv:2005.02717"]}
Synchrotron X-ray study of polycrystalline wurtzite Zn1-xMgxO (0 <= x <= 0.15): Evolution of crystal structure and polarization
Creators: name: Kim, Young-Il
name: Page, Katharine
name: Seshadri, Ram
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The effect of Mg-substitution on the crystal structure of wurtzite ZnO is presented based on synchrotron X-ray diffraction studies of polycrystalline Zn1-xMgxO (0 <= x <= 0.15). Increase in Mg concentration results in pronounced c-axis compression of the hexagonal lattice, and in diminution of the off-center cation displacement within each tetrahedral ZnO4 unit. Going from ZnO to Zn0.85Mg0.15O, significant changes in the ionic polarization are observed (-5.6 to -4.8 uC/cm2), despite only subtle increments in the cell volume (~0.03 %) and the ab-area dimension (~0.1 %). The optical properties of the samples have also been characterized and the band gap changes from 3.24 eV (ZnO) to 3.35 eV (Zn0.85Mg0.15O).
description: 9 Pages, Word + PDF, 3 Figures, 1 Table
Looking for Changes in Photospheric Temperature Gradients over Solar Cycle 24 Using Hinode/SP
Creators: name: Crowley, James
name: Milic, Ivan
Publisher: name: Zenodo
Year: 2021
Subjects: photosphere, Sun, solar cylce

description: The intent of this project is to study the effects of the solar magnetic cycle on the thermal structure of the solar atmosphere in the quiet Sun. Using data from the spectropolarimeter onboard the Hinode satellite, four datasets were selected from throughout Solar Cycle 24; all datasets selected were near the disk center and without any obvious magnetic signatures. Using an inversion based on the Milne-Eddington model, a quarter-million pixels were inverted from each dataset, using two different inversion schemes. By inverting the data and analyzing the differences in the inverted parameters between the datasets, we attempt to see if the resolution of the Hinode data combined with a Milne-Eddington approach is able to detect meaningful differences in photospheric structure throughout the solar cycle, primarily the source function and its gradient. Our results so far suggest that more detailed inversion and /or data preprocessing is needed to detect eventual presence of the changes. 
Gardère, E., & Co
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1834

description: Ort: Paris
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Dark matter admixed neutron stars
Creators: name: Kain, Ben
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Neutron stars could contain a mixture of ordinary nuclear matter and dark matter, such that dark matter could influence observable properties of the star, such as its mass and radius. We study these dark matter admixed neutron stars for two choices of dark matter: a free Fermi gas and mirror dark matter. In addition to solving the multi-fluid Tolman-Oppenheimer-Volkoff equations for static solutions and presenting mass-radius diagrams, we focus on two computations that are lacking in the literature. The first is a rigorous determination of stability over the whole of parameter space, which we do using two different methods. The first method is based on harmonic time-dependent perturbations to the static solutions and on solving for the radial oscillation frequency. The second method, which is less well-known, conveniently makes use of unperturbed, static solutions only. The second computation is of the radial oscillation frequency, for fundamental modes, over large swaths of parameter space.
description: 13 pages, 9 figures; v2: references added; v3: typos corrected
Flubacher, Sohn
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1834

description: Ort: Basel
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Branching ratio measurement of a "Lambda" system in Tm3+:YAG under magnetic field
Creators: name: Louchet, Anne
name: Habib, Jamil S.
name: Crozatier, Vincent
name: Lorgeré, Ivan
name: Goldfarb, Fabienne
name: Bretenaker, Fabien
name: Gouët, Jean-Louis Le
name: Guillot-Noël, Olivier
name: Goldner, Philippe
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A three-level Lambda system in Tm3+ doped YAG crystal is experimentally investigated in the prospect of quantum information processing. Zeeman effect is used to lift the nuclear spin degeneracy of this ion. In a previous paper [de Seze et al. Phys. Rev. B, 73, 85112 (2006) we measured the gyromagnetic tensor components and concluded that adequate magnetic field orientation could optimize the optical connection of both ground state sublevels to each one of the excited state sublevels, thus generating Lambda systems. Here we report on the direct measurement of the transition probability ratio along the two legs of the Lambda. Measurement techniques combine frequency selective optical pumping with optical nutation or photon echo processes.
3D Virtual Reality vs. 2D Desktop Registration User Interface Comparison
Creators: name: Bueckle, Andreas
name: Buehling, Kilian
name: Shih, Patrick C.
name: Borner, Katy
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Working with organs and extracted tissue blocks is an essential task in surgery and anatomy environments. To prepare specimens from human donors for analysis, wet-bench workers must dissect human tissue and collect metadata for downstream analysis, including information about the spatial origin of tissue. The Registration User Interface (RUI) was developed to allow stakeholders in the Human Biomolecular Atlas Program (HuBMAP) to register tissue blocks, i.e., to record the size, position, and orientation of human tissue data with regard to reference organs. In this paper, we compare three setups for registering one 3D tissue block object to another 3D reference organ (target) object. The first setup is a 2D Desktop implementation featuring a traditional screen, mouse, and keyboard interface. The remaining setups are both virtual reality (VR) versions of the RUI: VR Tabletop, where users sit at a physical desk which is replicated in virtual space; VR Standup, where users stand upright while performing their tasks. We then ran a user study for these three setups involving 42 human subjects completing 14 increasingly difficult and then 30 identical tasks in sequence and reporting position accuracy, rotation accuracy, completion time, and satisfaction. While VR Tabletop and VR Standup users are about three times as fast and about a third more accurate in terms of rotation than 2D Desktop users (for the sequence of 30 identical tasks), there are no significant differences between the three setups for position accuracy when normalized by the height of the virtual kidney across setups.
description: 45 pages/9 figures in main text (incl. references); 6 pages with 2 tables in Supporting Information
Gouget, J. B
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1834

description: Ort: Bordeaux
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Απόψεις των εκπαιδευτικών της Θεσσαλονίκης σχετικά με την παρουσία, την επίδοση και τη σημασία της μητρικής γλώσσας των δίγλωσσων μαθητών.
Creators: name: Χατζησακούλα, Χρυσούλα Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Διγλωσσία
Μητρική γλώσσα
Απόψεις εκπαιδευτικών
Bilingualism
Mother tongue
Opinions of teachers

description: Η παρούσα εργασία συντάσσεται στα πλαίσια του Κοινού ελληνογαλλικό μεταπτυχιακό: Διδακτικές της πολυγλωσσίας και γλωσσικές πολιτικές. Διάδοση των γλωσσών σε πολύγλωσσα και πολυπολιτισμικά περιβάλλοντα. Το θέμα που επέλεξα είναι «Απόψεις των εκπαιδευτικών της Θεσσαλονίκης σχετικά με τη σημασία της μητρικής γλώσσας, την παρουσία και τη σχολική επίδοση των δίγλωσσων μαθητών - Opinions of teachers in Thessaloniki on the importance of the mother tongue, presence and school performance of bilingual students - Opinions des enseignants en Thessalonique sur l'importance de la langue maternelle, la présence et la performance scolaire des enfants bilingues». Πρωταρχικός σκοπός ήταν να εξεταστεί τι είναι η μητρική γλώσσα και πως αυτή αντιμετωπίζεται από διάφορες οπτικές γωνίες. Εξετάσαμε την ορολογία που χρησιμοποιείται στη βιβλιογραφία και τους ορισμούς που έχουν προταθεί. Στη συνέχεια παρουσιάσαμε το πώς κατακτάει κάποιος τη μητρική ή τις μητρικές του γλώσσες, τι σημασία έχει για το άτομο και πως το αντιμετωπίζουν οι άλλοι γύρω του. Τέλος, έγινε αναφορά στον τρόπο που αντιλαμβάνονται και αντιμετωπίζουν την παρουσία και τη σχολική επίδοση των δίγλωσσων παιδιών από τη σκοπιά τόσο των γονιών όσο και της σχολικής μονάδας και του Υπ. Παιδείας.
description: This work was written in the context of the Joint Greek-French master : Teaching multilingualism and language policies. Dissemination of languages in multilingual and multicultural environments. The theme I chose is "Attitudes of teachers of Thessaloniki on the importance of the mother tongue, the presence and the academic performance of bilingual students - Opinions of teachers in Thessaloniki on the importance of the mother tongue, presence and school performance of bilingual students - Opinions des enseignants en Thessalonique sur l'importance de la langue maternelle, la présence et la performance scolaire des enfants bilingues». The primary objective was to examine what is the native language and how it is treated from different angles. We examined the terminology used in the literature and the definitions that have been proposed. Then we presented how someone conquers his mother tongue or mother tongues, what does it matter for the individual and how the people around him face it. Finally , reference was made in the way we perceive and treat the presence and academic performance of bilingual children from the perspective of both parents and the school unit the Ministry of Education.
description: Συνεργαζόμενα Τμήματα Πανεπιστήμιο Λε Μαν (Maine France, Γαλλία)
A local field emission study of partially aligned carbon-nanotubes by AFM probe
Creators: name: Di Bartolomeo, A.
name: Scarfato, A.
name: Giubileo, F.
name: Bobba, F.
name: Biasucci, M.
name: Cucolo, A. M.
name: Santucci, S.
name: Passacantando, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report on the application of Atomic Force Microscopy (AFM) for studying the Field Emission (FE) properties of a dense array of long and vertically quasi-aligned multi-walled carbon nanotubes grown by catalytic Chemical Vapor Deposition on a silicon substrate. The use of nanometric probes enables local field emission measurements allowing investigation of effects non detectable with a conventional parallel plate setup, where the emission current is averaged on a large sample area. The micrometric inter-electrode distance let achieve high electric fields with a modest voltage source. Those features allowed us to characterize field emission for macroscopic electric fields up to 250 V/$μ$m and attain current densities larger than 10$^5$ A/cm$^2$. FE behaviour is analyzed in the framework of the Fowler-Nordheim theory. A field enhancement factor $γ\approx$ 40-50 and a turn-on field $E_{turn-on} \sim$15 V/$μ$m at an inter-electrode distance of 1 $μ$m are estimated. Current saturation observed at high voltages in the I-V characteristics is explained in terms of a series resistance of the order of M$Ω$. Additional effects as electrical conditioning, CNT degradation, response to laser irradiation and time stability are investigated and discussed.
Sparse Representation of HINODE/SOT/SP Spectra Using Convolutional Neural Networks
Creators: name: Flint, Serena
name: Milic, Ivan
Publisher: name: Zenodo
Year: 2021
Subjects: spectroscopy
photosphere
sun
machine learning

description: A fundamental problem in solar spectropolarimetry is relating observed spectra and their polarization to the physical parameters of the underlying atmosphere. One of the difficulties in this process is the fact that the spectra usually can be represented with a much smaller number of hyperparameters than what is suggested by the number of wavelength points used for sampling. Said differently, spectra can usually be compressed or described in a sparser basis. In this work, we use the neural networks to investigate the dimensionality of photospheric spectra, and to compare the compressed spectra with the maps of physical parameters used to generate the said spectra.
Forcart, Esther, de Joh. Rud. (Jungfrau)
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1834

description: Ort: Basel
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A bias-free measure of crossmodal audiovisual action adaptation
Creators: name: Barraclough, Nick
Publisher: name: F1000Research
Year: 2015

description: Actions can be perceived through multiple sensory modalities including vision and audition. It is currently uncertain if audiovisual actions are coded multimodally or in discrete unimodal areas. In order to test if actions are coded multimodally, we used a crossmodal adaptation paradigm to test whether the perception of hand action sounds was influenced by prior adaptation to visual and auditory actions. We generated an action sound continuum between the sound of a hand knocking and slapping by blending the sounds between the two action extremes. Following adaptation to auditory knocks, subsequent ambiguous test sounds appeared more like slaps; following adaptation to auditory slaps, subsequent ambiguous test sounds appeared more like knocks. Smaller but significant auditory aftereffects were generated by adaptation to purely visual information, whilst visual adaptation to visually presented orthographic action information did not generate auditory aftereffects. We also tested whether crossmodal adaptation improved action sound sensitivity around the adapting stimulus to rule out the possibility of observer response bias (Morgan 2013). Just-noticeable differences (JNDs) were calculated for knock sounds after participants adapted to auditory, visual, and audiovisual knocks, or did not adapt. Participants completed a two-interval forced-choice (2-IFC) adaptive staircase procedure, in which they judged which sound was more like a knock. JNDs were derived from a psychometric function fitted to the data. Auditory, audiovisual, and importantly visual only adaptation improved sensitivity to knock sounds when compared to no adaptation. A further experiment confirmed that auditory sensitivity to knock sounds was most enhanced following adaptation to visual knock actions compared to visual slap actions. These results suggest that adaptation to actions, irrespective of the adaptor modality can selectively enhance mechanisms underlying the coding of actions to improve perceptual sensitivity.  Such crossmodal action aftereffects may result from adaptation of multimodal neurons tuned to specific actions.
Detecting small structural variants with SoftSV using soft-clipping information
Creators: name: Bartenhagen, Christoph
name: Dugas, Martin
Publisher: name: F1000Research
Year: 2015

description: We implemented and evaluated a greedy approach for the detection of structural variations (SVs) without a minimum requirement on breakpoint support and mapping quality. Our goal was to overcome issues of low mutation coverage due to experiment design or a heterogeneous population of cancer cells, ambiguous mappings and passenger mutations at the breakpoints, without facing a large amount of false-positive predictions.
Haas, Heinrich Wilhelm
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1834

description: Ort: Wassenberg / Crefeld
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Fehr, E. & A
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1834

description: Ort: Philadelphia
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The priority of biological diversity conservation in forest land-use decision-making
Creators: name: Wood, Paul Malcolm
Publisher: name: University of British Columbia
Year: 2009

description: This thesis addresses one aspect of the following question: ‘On what basis should governments make forest land-use decisions?’ It focuses on biodiversity conservation, and explores a connection between this issue and the legitimacy of curtailments on government action (or majority rule) in a constitutional democracy. I conclude that biodiversity conservation is a legitimate constraint on the public interest and this carries implications for constitutional and statutory legal reform. World-wide, biodiversity (in the form of species at least) is rapidly being depleted due to human activities, particularly as manifested in land-use patterns. The cumulative effects are potentially catastrophic, and future generations will be the most likely to experience these effects. This leads to two central issues. First, what is biodiversity and why is it valuable? Second, how and to what extent should the interests of future generations be taken into account in forest land-use decisions? Biodiversity is a multidimensional concept, but admits to one root idea: it refers to the differences among biological entities. Thus biodiversity and its anthropocentric value can be clearly distinguished from biological resources (actual or potential) and their respective values. The claim is made that biodiversity is valuable because it is a necessary precondition for the very existence of biological resources in the long term. The thesis examines the three most prominent criteria for determining the public interest in public forest land-use decision-making: utility maximization, economic efficiency, and consensus among stakeholders in negotiation, and concludes that none can meaningfully or appropriately handle future generations’ interests. Instead, by drawing on a selection of five political theories, the thesis finds that in a liberal democracy biodiversity must be conserved for the sake of future generations even if it is not in the existent public interest to do so. Thus state authority must be curtailed in order to prevent the existent public from exerting a ‘tyranny of the majority’ over future generations by way of preemptive land-uses that may deplete biodiversity. Consequently, biodiversity conservation must take priority in forest land-use decisions. The implications for constitutional and statutory legal reform are discussed.
Μελέτη της προγνωστικής σημασίας της ανοσοϊστοχημικής έκφρασης της κλαυδίνης 7, της Ε-καντχερίνης και του Ρ53 σε καρκινώματα του μαστού που χαρακτηρίζονται ως τριπλά αρνητικά.:
Creators: name: Λέββα, Σοφία Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: τριπλά αρνητικός καρκίνος του μαστού
κλαυδίνη-7
triple negative breast cancer
claudin-7
p53

description: Ο τριπλά αρνητικός καρκίνος του μαστού (ΤΑΚΜ) αποτελεί μια ετερογενή ομάδα καρκινωμάτων με αποτέλεσμα η υποκατηγοριοποίησή του να είναι απαραίτητη για την καλύτερη αναγνώριση στοχευμένων θεραπειών. Προκειμένου να μειωθεί η θνησιμότητα που εμφανίζει ο ΤΑΚΜ, υπάρχει ανάγκη να εξετασθούν και να χαρακτηριστούν οι όγκοι που εμφανίζουν πτωχή πρόγνωση και να εξασφαλιστεί κατάλληλη θεραπεία. Ως εκ τούτου, επιπρόσθετοι δείκτες μελετώνται προσπαθώντας να βελτιώσουν περαιτέρω την ταξινόμηση της νόσου. Στην παρούσα μελέτη, ελέγχθηκε εάν η ανοσοϊστοχημική έκφραση της κλαυδίνης-7, της Ε-καντχερίνης και της πρωτεΐνης p53 μεμονωμένα ή σε συνδυασμό θα μπορούσαν να αποτελέσουν χρήσιμο εργαλείο για την ταξινόμηση των ΤΑΚΜ σε προγνωστικές υποομάδες. Καθώς δεν ανευρέθηκε διαφορά στο διάστημα ελεύθερο νόσου ή τη συνολική επιβίωση ανάλογα με τα επίπεδα έκφρασης των ανωτέρω πρωτεϊνών, δεν μπορεί να υποστηριχθεί η χρησιμοποίησή τους για τον καθορισμό της βιολογικής συμπεριφοράς των όγκων αυτών και την πρόβλεψη της επιθετικότητας της νόσου.
description: Triple-negative breast cancer (TNBC) is a highly diverse group of cancers, and subtyping is necessary to better identify molecular-based therapies. To reduce mortality from TNBC further, there is a demand to examine and characterize tumors of poor prognosis and ensure appropriate therapy. Therefore, additional biomarkers are studied to improve further classification of the disease. In this study, we examined whether the immunohistochemical expression of claudin-7, E-cadherin and p53, individually or in combination, could be a useful tool for the classification of TNBCs in prognostic subgroups. As no statistical significance in DFS or OS was observed among the groups, formed according to the expression levels of the above proteins, their use cannot be supported in defining the biological behavior of these tumors and in predicting the aggressiveness of the disease.
The Deep X-Ray Radio Blazar Survey (DXRBS). III. Radio Number Counts, Evolutionary Properties, and Luminosity Function of Blazars
Creators: name: Padovani, P.
name: Giommi, P.
name: Landt, H.
name: Perlman, E. S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Our knowledge of the blazar surface densities and luminosity functions, which are fundamental parameters, relies still on samples at relatively high flux limits. As a result, our understanding of this rare class of active galactic nuclei is mostly based on relatively bright and intrinsically luminous sources. We present the radio number counts, evolutionary properties, and luminosity functions of the faintest blazar sample with basically complete (~ 95%) identifications. Based on the Deep X-ray Radio Blazar Survey (DXRBS), it includes 129 flat-spectrum radio quasars (FSRQ) and 24 BL Lacs down to a 5 GHz flux and power ~ 50 mJy and ~ 10^{24} W/Hz, respectively, an order of magnitude improvement as compared to previously published (radio-selected) blazar samples. DXRBS FSRQ are seen to evolve strongly, up to redshift ~ 1.5, above which high-power sources show a decline in their comoving space density. DXRBS BL Lacs, on the other hand, do not evolve. High-energy (HBL) and low-energy (LBL) peaked BL Lacs share the same lack of cosmological evolution, which is at variance with some previous results. The observed luminosity functions are in good agreement with the predictions of unified schemes, with FSRQ getting close to their expected minimum power. Despite the fact that the large majority of our blazars are FSRQ, BL Lacs are intrinsically ~ 50 times more numerous. Finally, the relative numbers of HBL and LBL in the radio and X-ray bands are different from those predicted by the so-called "blazar sequence" and support a scenario in which HBL represent a small minority (~ 10%) of all BL Lacs.
description: 19 pages, 14 figures (1 color), accepted for publication in the Astrophysical Journal
Rotation-activity relations and flares of M dwarfs with K2 long- and short-cadence data
Creators: name: Raetz, St
name: Stelzer, B
name: Damasso, M
name: Scholz, A.
Publisher: name: Zenodo
Year: 2021
Subjects: Cool Stars on the main sequence

description: Studies of the rotation-activity relation of late-type stars are essential to enhance our understanding of stellar dynamos and angular momentum evolution. Photometric observations with space telescopes provide rotation periods even with low amplitudes as well as a wealth of activity diagnostics. Our previous study of the rotation-activity relation based on photometric activity indicators from long cadence K2 data revealed, that, at a critical rotation period of ~10d, the activity level changes abruptly. This phenomenon represents an open problem within the framework of dynamo theory. We have now extended our work to K2 short cadence data to examine a possible influence of the data sampling on the shape of the rotation-activity relation, in particular with respect to the different sensitivity to the detection of stellar flares. Our sample comprises 56 bright and nearby M dwarfs observed by K2 during campaigns C0-C18 in long and short cadence mode. In my poster I will show the results of our K2 study with a special focus on stellar flares. I will show how a higher data cadence improves the detection and analysis of such events. The analysis of the short cadence light curves results in a 4.6 times higher flare rate than the long cadence data. We confirm in the short cadence data the abrupt change of the activity level in the rotation-activity relation at a critical period of ~10d. This change is most drastic in the flare duration and the flare frequency for short cadence data. Our flare studies revealed that the highest flare rates are not found among the fastest rotators and that the stars with the highest flare rates do not show the most energetic flares. Finally, we found a ~2 times larger superflares frequency for the fast rotating M stars than for solar-like stars in the same period range.
Friederichs, Gottfried Dietrich
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1834

description: Ort: Unna / Arnsberg
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert