cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ellipsometry with an undetermined polarization state
Creators: name: Liu, Feng
name: Lee, Chris J.
name: Chen, Juequan
name: Louis, Eric
name: van der Slot, Peter J. M.
name: Boller, Klaus J.
name: Bijkerk, Fred
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We show that, under the right conditions, one can make highly accurate polarization-based measurements without knowing the absolute polarization state of the probing light field. It is shown that light, passed through a randomly varying birefringent material has a well-defined orbit on the Poincare sphere, which we term a generalized polarization state, that is preserved. Changes to the generalized polarization state can then be used in place of the absolute polarization states that make up the generalized state, to measure the change in polarization due to a sample under investigation. We illustrate the usefulness of this analysis approach by demonstrating fiber-based ellipsometry, where the polarization state of the probe light is unknown, and, yet, the ellipsometric angles of the investigated sample ($Ψ$ and $Δ$) are obtained with an accuracy comparable to that of conventional ellipsometry instruments by measuring changes to the generalized polarization state.
description: 6 pages, 4 figures, 1 table
Squatinidae Bonaparte 1838
Creators: name: Theiss, Susan M.
name: Ebert, David A.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Elasmobranchii
Squatiniformes
Squatinidae

description: Family Squatinidae Bonaparte, 1838
description: Published as part of Theiss, Susan M. & Ebert, David A., 2013, Lost and found: recovery of the holotype of the ocellated angelshark, Squatina tergocellatoides Chen, 1963 (Squatinidae), with comments on western Pacific squatinids, pp. 73-85 in Zootaxa 3752 (1) on page 74, DOI: 10.11646/zootaxa.3752.1.6, http://zenodo.org/record/285351
Chemical looping combustion : cold model hydrodynamics and modeling of methane combustion
Creators: name: Xu, Min
Publisher: name: University of British Columbia
Year: 2010

description: A novel interconnected fluidized bed (IFB) reactor with a bypass line for chemical looping combustion (CLC) has been developed to overcome the problem of short residence time of oxygen carrier in the air reactor. A comprehensive hydrodynamic study was carried out on the cold-flow model of the proposed reactor. Detailed mapping of the operating conditions for the reactor system was studied. Pressure transducers were applied to investigate the pressure loops and the cross-sectional average solids hold-up along the air reactor. Solids circulation flux between the two reactors was measured using butterfly valves by estimating the time interval for collecting a given volume of solids. Helium was used as gas tracer for gas leakage measurement. The experiments examined the gas leakage from air reactor to fuel reactor, from fuel reactor to air reactor, from loop-seals to fuel reactor and from fuel reactor to the cyclone. For scaling consideration, the cold-flow reactor was operated with fluidizing gas mixture of helium and air to simulate the hydrodynamics of the hot unit. The effect of density ratio of solids to gas on the solids circulation flux, pressure loops and voidage distribution along the air reactor was investigated. The connection between cold unit and hot unit is achieved by applying a scaling law. It can be stated that the cold-flow model operated with fluidizing gas mixture of 96 vol% helium and 4 vol% air can be used to simulate the hydrodynamics of an atmospheric CLC hot unit. A comprehensive model for the investigation of the reactor is introduced by combining fluidization properties and a particle population balance for calculation of the bed particle conversion, considering the chemical reaction of a single particle. The dimensionless parameters, Mrfuel and Mrair, which represent the mass ratio of input oxidized-particles to the input fuel in unit time for the fuel reactor and the mass ratio of reduced-particles to the input oxygen in unit time for the air reactor, respectively, are introduced. The model shows that Mrfuel should be more than 50 for achieving fuel conversion of 90% in the fuel reactor and Mrair should be more than 60 for achieving oxygen conversion of 85% in the air reactor. A procedure for optimizing the performance of the atmospheric CLC reactor is developed. The modeling analysis indicated that the optimum operating condition of an atmospheric CLC reactor hot unit should be chosen as follows: fuel capacity is 80 kW, Ua0=6.6 m/s, Uf0= 0.076 m/s, UA1=4Umf, UA2=1Umf, and the temperature in air reactor is 1223 K and in fuel reactor is 1173 K.
Normal Type Ia supernovae from violent mergers of white dwarf binaries
Creators: name: Pakmor, R.
name: Kromer, M.
name: Taubenberger, S.
name: Sim, S. A.
name: Roepke, F. K.
name: Hillebrandt, W.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: One of the most important questions regarding the progenitor systems of Type Ia supernovae (SNe Ia) is whether mergers of two white dwarfs can lead to explosions that reproduce observations of normal events. Here we present a fully three-dimensional simulation of a violent merger of two carbon-oxygen white dwarfs with masses of $0.9 \mathrm{M_\odot}$ and $1.1 \mathrm{M_\odot}$ combining very high resolution and exact initial conditions. A well-tested combination of codes is used to study the system. We start with the dynamical inspiral phase and follow the subsequent thermonuclear explosion under the plausible assumption that a detonation forms in the process of merging. We then perform detailed nucleosynthesis calculations and radiative transfer simulations to predict synthetic observables from the homologously expanding supernova ejecta. We find that synthetic color lightcurves of our merger, which produces about $0.62 \mathrm{M_\odot}$ of $^{56}\mathrm{Ni}$, show good agreement with those observed for normal SNe Ia in all wave bands from U to K. Line velocities in synthetic spectra around maximum light also agree well with observations. We conclude, that violent mergers of massive white dwarfs can closely resemble normal SNe Ia. Therefore, depending on the number of such massive systems available these mergers may contribute at least a small fraction to the observed population of normal SNe Ia.
description: 6 pages, 4 figures, accepted for publication in ApJL
Rpp Game Edukasi Materi Peluang Empirik Dan Peluang Teoritik Kelas 9
Creators: name: Danades, Amri
Publisher: name: Zenodo
Year: 2016
Subjects: RPP
vidyanusa
crayonpedia

description: RPP Game Edukasi Materi Peluang Empirik dan Peluang Teoritik kelas 9
Flavour physics from an approximate U(2)^3 symmetry
Creators: name: Barbieri, Riccardo
name: Buttazzo, Dario
name: Sala, Filippo
name: Straub, David M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The quark sector of the Standard Model exhibits an approximate U(2)^3 flavour symmetry. This symmetry, broken in specific directions dictated by minimality, can explain the success of the Cabibbo-Kobayashi-Maskawa picture of flavour mixing and CP violation, confirmed by the data so far, while allowing for observable deviations from it, as expected in most models of ElectroWeak Symmetry Breaking. Building on previous work in the specific context of supersymmetry, we analyze the expected effects and we quantify the current bounds in a general Effective Field Theory framework. As a further relevant example we then show how the U(2)^3 symmetry and its breaking can be implemented in a generic composite Higgs model and we make a first analysis of its peculiar consequences. We also discuss how some partial extension of U(2)^3 to the lepton sector can arise, both in general and in composite Higgs models. An optimistic though conceivable interpretation of the considerations developed in this paper gives reasons to think that new physics searches in the flavour sector may be about to explore an interesting realm of phenomena.
description: 29 pages, 5 figures
Nucleation in a sheared Ising model: effects of external field
Creators: name: Allen, Rosalind J.
name: Valeriani, Chantal
name: Tanase-Nicola, Sorin
Publisher: name: arXiv
Year: 2011
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Simulations using the Forward Flux Sampling method have shown a nonmonotonic de- pendence of the homogeneous nucleation rate on the shear rate for a sheared two dimensional Ising model [R. J. Allen et al, arXiv cond-mat/0805.3029]. For quasi-equilibrium systems (i.e. in the absence of shear), Classical Nucleation Theory (CNT) predicts the dependence of the critical cluster size and the nucleation rate on the external magnetic field. We investigate the behaviour of the sheared Ising model as a function of the external field. At low exter- nal field strength, the same nonmonotonic behaviour holds and the peak in the nucleation rate is remarkably insensitive to the field strength. This suggests that the same external field-dependence holds for the enhancement of nucleation by shear at low shear rates and the suppression of shear at high shear rates. At high field strength, the nucleation behaviour is qualitatively different. We also analyse the size and shape of the largest cluster in the transition state configurations, as a function of the external field. In the sheared system, the transition state cluster becomes larger and more elongated as the field strength decreases. We compare our results for the sheared system to the predictions of the CNT for the quasi- equilibrium case, and find that the CNT cannot easily be used to describe nucleation in the system under shear.
Quantifying the interplay between environmental and social effects on aggregated-fish dynamics
Creators: name: Capello, Manuela
name: Soria, Marc
name: Cotel, Pascal
name: Deneubourg, Jean-Louis
name: Dagorn, Laurent
Publisher: name: arXiv
Year: 2011
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Demonstrating and quantifying the respective roles of social interactions and external stimuli governing fish dynamics is key to understanding fish spatial distribution. If seminal studies have contributed to our understanding of fish spatial organization in schools, little experimental information is available on fish in their natural environment, where aggregations often occur in the presence of spatial heterogeneities. Here, we applied novel modeling approaches coupled to accurate acoustic tracking for studying the dynamics of a group of gregarious fish in a heterogeneous environment. To this purpose, we acoustically tracked with submeter resolution the positions of twelve small pelagic fish (Selar crumenophthalmus) in the presence of an anchored floating object, constituting a point of attraction for several fish species. We constructed a field-based model for aggregated-fish dynamics, deriving effective interactions for both social and external stimuli from experiments. We tuned the model parameters that best fit the experimental data and quantified the importance of social interactions in the aggregation, providing an explanation for the spatial structure of fish aggregations found around floating objects. Our results can be generalized to other gregarious species and contexts as long as it is possible to observe the fine-scale movements of a subset of individuals.
description: 10 pages, 5 figures and 4 supplementary figures
Developing biochar-based catalyst for biodiesel production
Creators: name: Dehkhoda, Amir Mehdi
Publisher: name: University of British Columbia
Year: 2010

description: A biochar-based catalyst was successfully prepared by sulfonation of pyrolysis char with fuming sulphuric acid. Prepared catalyst was studied for its ability to catalyze transesterification of vegetable oils (i.e., Canola Oil) and esterification of free fatty acids (i.e., oleic acid) using methanol. Thus far, biochar-based catalyst has shown significant activity, >90% conversion, in esterification of FFAs while indicating limited activity for transesterification of triglyceride-based oils such as Canola Oil. The first step in catalyst development approach was to increase the transesterification activity through employing a stronger sulfonation procedure. The total acid density of the biochar-based catalyst increased by ~90 times resulting in significantly increased transesterification yield (i.e., from being almost negligible to ~9%). Further investigations on the biochar-based catalyst were conducted to determine the effect of sulfonation time (5 and 15 h) and surface area on the transesterification reaction. Two established activation techniques (i.e., chemical activation with KOH and the silica template method) have been utilized to develop the surface area and porosity of the biochar supports. The surface area of the biochar support increased from a typical 0.2 m²/g to over 600 m²/g. In the chemical activation method with KOH, the effect of activation temperature on the transesterification yield has been investigated. Three biochar-based catalysts with activated supports at three different temperatures (450, 675 and 875C) were prepared and compared for transesterification activity. The sulfonated catalysts were characterized using the following analyses: BET surface area, elemental analysis, total acid density, Fourier Transform Infra-Red (FT-IR) spectroscopy, and X-Ray Diffraction iii (XRD) spectroscopy. The catalyst supported on biochar activated at 675C resulted the maximum transesterification yield (18.9%). The reaction yield was dependent on both catalyst surface area and total acid density. The catalytic activity of the biochar-based catalyst with activated support at 675C remained significantly high for esterification of FFAs (conversion>97%). The structural study of the catalysts prepared from activated biochars at three different temperatures suggest that the higher activation temperatures cause an increasing re-orientation of the biochar’s carbon sheets towards a more graphite-like structure, causing a decrease (> 60%) in total acid density despite of the increase in surface area.
title: Besondere Bestimmungen der Prüfungsordnung für den Bachelorstudiengang Lehramt für sonderpädagogische Förderung mit der zweiten sonderpädagogischen Fachrichtung Förderschwerpunkt Lernen an der Universität Paderborn : vom 22. Juli 2016
Creators: name: Universität Paderborn
Publisher: name: UB-PAD - Paderborn University Library
Year: 2016
Subjects: subject: Sozialwissenschaften
subject: Bildung und Erziehung
subject: Hochschulbildung

description: Amtliche Mitteilungen / Universität Paderborn
Contributions to the cross shock electric field at supercritical perpendicular shocks: Impact of the pickup ions
Creators: name: Yang, Zhongwei
name: Han, Desheng
name: Yang, Huigen
name: Hu, Hongqiao
name: Zhang, Beichen
name: Zhang, Qinhe
name: Liu, Ruiyuan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Space Physics (physics.space-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: A particle-in-cell code is used to examine contributions of the pickup ions (PIs) and the solar wind ions (SWs) to the cross shock electric field at the supercritical, perpendicular shocks. The code treats the pickup ions self-consistently as a third component. Herein, two different runs with relative pickup ion density of 25% and 55% are presented in this paper. Present preliminary results show that: (1) in the low percentage (25%) pickup ion case, the shock front is nonstationary. During the evolution of this perpendicular shock, a nonstationary foot resulting from the reflected solar wind ions is formed in front of the old ramp, and its amplitude becomes larger and larger. At last, the nonstationary foot grows up into a new ramp and exceeds the old one. Such a nonstationary process can be formed periodically. hen the new ramp begins to be formed in front of the old ramp, the Hall term mainly contributed by the solar wind ions becomes more and more important. The electric field Ex is dominated by the Hall term when the new ramp exceeds the old one. Furthermore, an extended and stationary foot in pickup ion gyro-scale is located upstream of the nonstationary/self-reforming region within the shock front, and is always dominated by the Lorentz term contributed by the pickup ions; (2) in the high percentage (55%) pickup ion case, the amplitude of the stationary foot is increased as expected. One striking point is that the nonstationary region of the shock front evidenced by the self-reformation disappears. Instead, a stationary extended foot dominated by Lorentz term contributed by the pickup ions, and a tationary ramp dominated by Hall term contributed by the solar wind ions are clearly evidenced. The significance of the cross electric field on ion dynamics is also discussed.
description: 11 pages, 6 figs and 1 table. This paper will be published in the journal: Astrophysics and Space Science
On the presence of nonjet "higher harmonic" components in 2D angular correlations from high energy heavy ion collisions
Creators: name: Trainor, Thomas A.
name: Prindle, Duncan J.
name: Ray, R. L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It is conjectured that several higher harmonic flows $v_m$ may result from initial-state geometry fluctuations in åcollisions coupled to a radially-expanding medium. But as with "elliptic flow" $v_2$ measurements, non-hydrodynamic mechanisms such as jet production may contribute to other higher azimuth multipoles $v_m$ as biases. Careful distinctions should be maintained between jet-related and nonjet (possibly hydrodynamic) contributions to $v_m$ (e.g., "nonflow" and "flow"). In this study we consider several questions: (a) To what extent do jet-like structures in two-dimensional (2D) angular correlations contribute to azimuth multipoles inferred from various $v_m$ methods? (b) If a multipole element is added to a 2D fit model is a nonzero amplitude indicative of a corresponding flow component? and (c) Can 2D correlations establish the necessity of nonjet contributions to some or all higher multipoles? Model fits to 2D angular correlations are used to establish the origins of azimuth multipoles inferred from 1D projections onto azimuth or from nongraphical numerical methods. We find that jet-like angular correlations, and specifically a 2D peak at the angular origin consistent with jet production, constitute the dominant contribution to inferred higher multipoles, and the data do not {\em require} higher multipoles in isolation from the jet-like 2D peak. Inference of "higher harmonic flows" results from identifying certain nominally jet-like structure as flow manifestations through unjustified application of 1D Fourier series analysis. Although the peak structure at the angular origin is strongly modified in more-central collisions some properties remain compatible with relevant pQCD theory expectations for jet production.
description: 14 pages, 11 figures
Sahana4Greece: A Crowd-Sourced Virtual Eoc For Supporting The Rescue & Relief Operations In Greece For The Refugees
Creators: name: Harris V Georgiou (MSc, PhD)
Publisher: name: Zenodo
Year: 2016
Subjects: refugees
ICT4D
emergency operations center

description: 2015 Free & Open-Source Software Communities Meeting (FOSSCOMM 2015), 6-8 Nov 2015 @ Athens, Greece.
description: For further info see: http://www.ict4dascgr.eu
The role of metadata in the EOSC Future Science Project 'Climate Neutral and Smart Cities'
Creators: name: Orten, Hilde
name: Wackerow, Joachim
name: Gregory, Arofan
name: Beuster, Benjamin
Publisher: name: Zenodo
Year: 2023

description: The objective of the 'Climate Neutral and Smart Cities' Science Project of EOSC Future is to demonstrate that relevant environmental data and data on citizens' values, attitudes, behavior and involvement can be combined in a meaningful way for social, political and scientific analysis.
The Science Project rests on three pillars: Indicator production and integration of data from three different research domains, structured metadata for interdisciplinary use, and dissemination of data and research outcomes.
The presentation gives an introduction to the project and describes needs and usages of structured metadata in the project, with main focus on DDI-Cross Domain Integration (DDI-CDI), and how DDI-CDI and DDI-Lifecycle are used together in the project.
Prometheus: The Virtual Emergency Operations Center For Chios & Refugee Influx Data Analytics
Creators: name: Anastasiadis, Stavros
name: Harris V Georgiou (MSc, PhD)
Publisher: name: Zenodo
Year: 2016
Subjects: refugees
ICT4D
emergency operations center
signal processing
time series forecasting
machine learning

description: 2015 Free & Open-Source Software Communities Meeting (FOSSCOMM 2016), 16-17 Apr 2016 @ Athens, Greece.
description: For further info see: http://www.ict4dascgr.eu
Magnetic Fields, Relativistic Particles, and Shock Waves in Cluster Outskirts
Creators: name: Bruggen, M.
name: Bykov, A.
name: Ryu, D.
name: Rottgering, H.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: It is only now, with low-frequency radio telescopes, long exposures with high-resolution X-ray satellites and gamma-ray telescopes, that we are beginning to learn about the physics in the periphery of galaxy clusters. In the coming years, Sunyaev-Zeldovich telescopes are going to deliver further great insights into the plasma physics of these special regions in the Universe. The last years have already shown tremendous progress with detections of shocks, estimates of magnetic field strengths and constraints on the particle acceleration efficiency. X-ray observations have revealed shock fronts in cluster outskirts which have allowed inferences about the microphysical structure of shocks fronts in such extreme environments. The best indications for magnetic fields and relativistic particles in cluster outskirts come from observations of so-called radio relics, which are megaparsec-sized regions of radio emission from the edges of galaxy clusters. As these are difficult to detect due to their low surface brightness, only few of these objects are known. But they have provided unprecedented evidence for the acceleration of relativistic particles at shock fronts and the existence of muG strength fields as far out as the virial radius of clusters. In this review we summarise the observational and theoretical state of our knowledge of magnetic fields, relativistic particles and shocks in cluster outskirts.
description: 34 pages, to be published in Space Science Reviews
Refugee Influx Analysis For Smart Early-Warning Systems For The Rescue/Relief Operations In The First-Reception Islands
Creators: name: Harris V Georgiou (MSc, PhD)
name: Kiomourtzis, Ioannis
name: Alexakos, Fotis
Publisher: name: Zenodo
Year: 2016
Subjects: refugees
ICT4D
emergency operations center
signal processing
time series forecasting
machine learning

description: 2016 SafeEvros: New technologies for Civil Protection services (SafeEvros 2016), 22-25 June 2016 @ Alexandroupolis, Greece.
description: For further info see: http://www.ict4dascgr.eu
Structural modification in Au/Si(100) system: Role of surface oxide and vacuum level
Creators: name: Rath, A.
name: Dash, J. K
name: Juluri, R. R.
name: Satyam, P. V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: To understand surface structural modifications for Au/Si (100) system, a thin gold film of ~2.0 nm was deposited under ultra high vacuum (UHV) condition on reconstructed Si surfaces using molecular beam epitaxy (MBE). Post annealing was done at 500°C in three different vacuum conditions: (1) low vacuum (LV) furnace (10-2 mbar), (2) UHV (10-10 mbar) (MBE chamber), (3) high vacuum (HV) chamber. The variation in the overall shape of the gold nanostructures and finer changes at the edges, like rounding of corners has been reported in this work. Although well aligned nano rectangles were formed in both HV and LV cases, corner rounding is more prominent in LV case. Furthermore in UHV case, random structures were formed having sharp corners. In all the above three cases, samples were exposed to air (for half an hour) before annealing. To study the effect of surface oxide, in-situ annealing inside UHV-MBE chamber was done without exposing to air. Well aligned rectangles with sharp corners (no corner rounding) were formed. The details about the role of surface oxides in the corner rounding process are discussed.
description: 11 pages, 3 figures
Kinetic study of methane hydrate formation in a bed of silica sand particles using magnetic resonance imaging
Creators: name: Bagherzadeh Hosseini, Seyyed Alireza
Publisher: name: University of British Columbia
Year: 2010

description: This thesis studies the formation and decomposition of methane hydrate crystal in an unconsolidated bed of silica sand particles. Hydrate processes were visualized by taking advantage of the ¹H magnetic resonance imaging technique, and the integrated intensity of magnetic resonance images was used to quantify the rate and kinetics. For all of the experiments, the initial pressure was 8 MPa and the temperature was kept constant at 1℃. Beds composed of 2 grams of sand were saturated with different amounts of water (0.44, 0.33, 0.22 and 0.11 mL) in order to examine the effect of water content of the bed on the kinetics of hydrate formation in porous media. Also, the effect of particle size was investigated by forming hydrate in beds with different particle size ranges (210-297, 125-210, 88-177 and <74 µm). It was found that the hydrate formation process in a bed of silica sand particles can be divided into three stages: induction time, non-uniform growth and uniform growth. During the first stage, methane molecules dissolved and diffused in water. After formation of the first crystals of hydrate at the end of the induction period (nucleation point), hydrate formation proceeded through a combination and competition between nucleation and growth, and multiple nucleation occurred. During the last stage, no obvious nucleation was observed and hydrate formation continued only through the growth of the crystals which had already been formed during the previous stages. The rate of hydrate formation was found to be faster in beds with smaller particles and lower water content.
Towards Understanding First-Party Cookie Tracking in the Field
Creators: name: Demir, Nurullah
name: Theis, Daniel
name: Urban, Tobias
name: Pohlmann, N.
name: Pohlmann, Norbert
Publisher: name: Gesellschaft für Informatik (GI)
Year: 2022
Subjects: first-party tracking
cookies
privacy
CNAME cloaking
tracking method

description: Third-party tracking is a common and broadly used technique on the Web. Different defense mechanisms have emerged to counter these practices (e. g. browser vendors that ban all third-party cookies). However, these countermeasures only target third-party trackers and ignore the first party because the narrative is that such monitoring is mostly used to improve the utilized service (e.g. analytical services). In this paper, we present a large-scale measurement study that analyzes tracking performed by the first party but utilized by a third party to circumvent standard tracking preventing techniques. We visit the top 15,000 websites to analyze first-party cookies used to track users and a technique called “DNS CNAME cloaking”, which can be used by a third party to place first-party cookies. Using this data, we show that 76% of sites effectively utilize such tracking techniques. In a long-running analysis, we show that the usage of such cookies increased by more than 50% over 2021.
Tree species diversity affects litter decomposition via modification of the microenvironment
Creators: name: Zhang, Shengmin
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 310308
subject: Terrestrial ecology

description: Decomposition is a key determinant of forest functioning. Although litter-mixture effects on decomposition have been studies extensively, less is known about the indirect effects of modified microenvironments via overstorey tree species mixing. We carried out experimental set-ups in a large-scale tree diversity experiments in Belgium to address this research question. The findings are published in Ecosystems.
title: Besondere Bestimmungen der Prüfungsordnung für den Bachelorstudiengang Lehramt an Haupt-, Real-, Sekundar- und Gesamtschulen mit dem Unterrichtsfach Französisch an der Universität Paderborn : vom 22. Juli 2016
Creators: name: Universität Paderborn
Publisher: name: UB-PAD - Paderborn University Library
Year: 2016
Subjects: subject: Sozialwissenschaften
subject: Bildung und Erziehung
subject: Hochschulbildung

description: Amtliche Mitteilungen / Universität Paderborn
The first resolved imaging of milliarcsecond-scale jets in Circinus X-1
Creators: name: Miller-Jones, J. C. A.
name: Moin, A.
name: Tingay, S. J.
name: Reynolds, C.
name: Phillips, C. J.
name: Tzioumis, A. K.
name: Fender, R. P.
name: McCallum, J. N.
name: Nicolson, G. D.
name: Tudose, V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present the first resolved imaging of the milliarcsecond-scale jets in the neutron star X-ray binary Circinus X-1, made using the Australian Long Baseline Array. The angular extent of the resolved jets is ~20 milliarcseconds, corresponding to a physical scale of ~150 au at the assumed distance of 7.8 kpc. The jet position angle is relatively consistent with previous arcsecond-scale imaging with the Australia Telescope Compact Array. The radio emission is symmetric about the peak, and is unresolved along the minor axis, constraining the opening angle to be less than 20 degrees. We observe evidence for outward motion of the components between the two halves of the observation. Constraints on the proper motion of the radio-emitting components suggest that they are only mildly relativistic, although we cannot definitively rule out the presence of the unseen, ultra-relativistic (Lorentz factor >15) flow previously inferred to exist in this system.
description: Accepted for publication in MNRAS Letters. 6 pages, 4 figures
For-Hire Trucking of Exempt Farm Products: Operating Practices and Nature of Competition
Creators: name: Wright, Bruce H.
name: Wright, Bruce H.
Publisher: name: Unknown
Year: 1964
Subjects: subject: Agricultural and Food Policy
subject: Marketing
subject: FOS: Economics and business
subject: Production Economics

description: Excerpts from the report: Motor carriers hauling certain unprocessed agricultural commodities across State lines on a for-hire basis are exempt from economic regulation by the Interstate Commerce Commission. Much of the transportation involved in marketing agricultural commodities is performed by these operators. The exemption was written into the Interstate Commerce Act of 1935, and has been somewhat modified since that time. The part of the Act relating to the exemption, as it now reads, is given in the Appendix, together with a list of exempt and non-exempt commodities based on Administration Rulings 107 and 110 of the Bureau of Motor Carriers. This report summarizes the findings of a study of the activities of firms engaged in for-hire carrying of exempt farm products. It covers source of loads, methods by which rates are established, principal sources of competition, operating costs, trip-leasing, and type and amount of equipment used.
Uputstvo za Python instalaciju (MSR)
Creators: name: Miljković, Nadica
Publisher: name: Zenodo
Year: 2020
Subjects: Python
električna merenja
programabilna instrumentacija
programiranje
matplotlib
numpy
vpython
pyserial

description: Uputstvo za instalaciju i pokretanje Python koda na Windows operativnom sistemu za MSR (Merni sistemi u računarstvu - 13E053MSR) predmet na Univerzitetu u Beogradu - Elektrotehničkom fakultetu. Uputstvo za instalaciju Python-a su u školskoj 2020/21. godini pripremili Pavle Radojković i Nikola Valzorio, a uputstvo je dostupno na https://youtu.be/VeEEHKcZwMM.
description: Ovo uputstvo sadrži i Python kod, kao i fajlove sa primerima signala za vežbanje osnovnog računa merne nesigurnosti. Python kod je realizovan u verziji 3.
Handling, inspection and repair of aircraft composites: a pilot study on the awareness of maintenance personnel
Creators: name: Jong, C.M.
name: COMER, ANTHONY
name: CHATZI, ANNA
name: KOUROUSIS, KYRIAKOS
Publisher: name: University of Limerick
Year: 2023
Subjects: subject: Health sciences
subject: FOS: Health sciences
subject: Engineering

description: Composite materials are enjoying an increasing use in aircraft structures. As more fleets transition from metal to more composite aircraft, the practice of maintenance is also adjusting. Handling, inspection and repair of aircraft composites following non-visible or barely visible damage are among the areas of concern, due to associated cost and safety implications. A pilot study was performed to explore the level of awareness and understanding of aviation maintenance practitioners around these issues. In addition, this research project sought to identify factors related to the technical/engineering judgement capacity of the personnel working with composites and to gauge the need for specialised education and training. A questionnaire survey was administered to a group of 40 professionals working for an aircraft maintenance, repair and overhaul (MRO) organisation. Descriptive statistics in conjunction with analysis of variance (ANOVA) were used to analyse the results. The sources of impact and common areas affected on the aircraft have been identified, with situational awareness suggested as the most important mitigator against impact damage. Over 70% of the participants would refer to their engineering manager for instructions on how to handle composite damage. The need for higher standardisation for composites’ maintenance, repair and handling issues emerged as a common theme across different sections of the survey. Almost all respondents agree on the need for specialised knowledge and training for the handling, repair and inspection of composites.
Sahana4Greece (Brochure A5)
Creators: name: Harris V Georgiou (MSc, PhD)
Publisher: name: Zenodo
Year: 2016
Subjects: refugees
ICT4D
emergency operations center

description: Sahana platform is an internationally recognized and award-winning free software (FOSS) for logistical support of volunteering/rescue teams, relief organizations and NGOs in emergency response situations and disaster relief missions. The operational deployment of Sahana in Greece provides a substantial boost to the logistics of teams, organizations and even individual volunteers that engage actively in the islands of eastern Aegean sea, as well as improved collaboration and coordination with larger NGOs and access to state infrastructures.

Hellenic Informatics Union (HIU), the Greek ICT4D team (ICT4dascgr) and Sahana Foundation come together for the first time and collaborate for the support of refugees and volunteering teams in the frontline islands in Eastern Aegean sea.
description: For further info see: http://www.ict4dascgr.eu
Open data for the publication entitled 'Tree species diversity affects litter decomposition via modification of the microenvironment'
Creators: name: Zhang, Shengmin
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 310308
subject: Terrestrial ecology

description: Decomposition is a key determinant of forest functioning. Although litter-mixture effects on decomposition have been studies extensively, less is known about the indirect effects of modified microenvironments via overstorey tree species mixing. We carried out experimental set-ups in a large-scale tree diversity experiments in Belgium to address this research question. The findings are published in Ecosystems.
On particle acceleration rate in GRB afterglows
Creators: name: Sagi, Eran
name: Nakar, Ehud
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: It is well known that collisionless shocks are major sites of particle acceleration in the Universe, but the details of the acceleration process are still not well understood. The particle acceleration rate, which can shed light on the acceleration process, is rarely measured in astrophysical environments. Here we use observations of gamma-ray burst afterglows, which are weakly magnetized relativistic collisionless shocks in ion-electron plasma, to constrain the rate of particle acceleration in such shocks. We find, based on X-ray and GeV afterglows, an acceleration rate that is most likely very fast, approaching the Bohm limit, when the shock Lorentz factor is in the range of 10-100. In that case X-ray observations may be consistent with no amplification of the magnetic field in the shock upstream region. We examine the X-ray afterglow of GRB 060729, which is observed for 642 days showing a sharp decay in the flux starting about 400 days after the burst, when the shock Lorentz factor is about 5. We find that inability to accelerate X-ray emitting electrons at late time provides a natural explanation for the sharp decay, and that also in that case acceleration must be rather fast, and cannot be more than a 100 times slower than the Bohm limit. We conclude that particle acceleration is most likely fast in GRB afterglows, at least as long as the blast wave is ultra-relativistic.
description: ApJ in press
Concentration of bacterial pathogens using microfluidic dielectrophoresis systems
Creators: name: Lin, Tao
Publisher: name: University of British Columbia
Year: 2010

description: Over the course of human history, people have been always troubled by unpredictable outbreaks of pathogenic bacteria. A rapid, specific and durable diagnostic sensor for detecting pathogens in a timely fashion is essential for identifying unknown infectious diseases and reacting by offering proper patient management and public health involvement without delay. Development of a microfluidic system incorporating interdigitated electrodes for characterizing concentration, purification and differentiation of pathogenic bacteria is presented. Polystyrene microspheres, Salmonella typhimurium, Campylobacter jejuni, Escherichia coli and Mycobacterium smegmatis are trapped by the positive dielectrophoretic force produced by the microelectrodes deposited and arrayed on a glass substrate covered with a PDMS microchannel. Diluted buffer used for producing positive dielectrophoresis for capturing cells is selected after evaluating the viability of the cells suspended in different buffers. Trapping efficiencies of Escherichia coli and Mycobacterium smegmatis are acquired by comparing input concentration and output concentration from plating results. Effective conductivities of both Escherichia coli and Mycobacterium smegmatis are calculated by obtaining optical density measurements corresponding to certain buffers with a range of different conductivity values used for trapping. Separation of a mixture with Escherichia coli and Mycobacterium smegmatis is achieved through the microconcentrator, although the results conflict with the calculated cellular conductivity values. The microfluidic DEP concentrator is shown to be an effective tool for studying and separating bacterial populations, and the results clearly indicate exciting directions for future work.
title: Besondere Bestimmungen der Prüfungsordnung für den Masterstudiengang Lehramt an Haupt-, Real-, Sekundar- und Gesamtschulen mit dem Unterrichtsfach Französisch an der Universität Paderborn : vom 22. Juli 2016
Creators: name: Universität Paderborn
Publisher: name: UB-PAD - Paderborn University Library
Year: 2016
Subjects: subject: Sozialwissenschaften
subject: Bildung und Erziehung
subject: Hochschulbildung

description: Amtliche Mitteilungen / Universität Paderborn
Improved Semiconductor Lattice Parameters and Band Gaps from a Middle-Range Screened Hybrid Functional
Creators: name: Lucero, Melissa J.
name: Henderson, Thomas M.
name: Scuseria, Gustavo E.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We show that the middle-range exchange-correlation hybrid of Henderson, Izmaylov, Scuseria and Savin (HISS) performs extremely well for elemental and binary semiconductors with narrow or visible spectrum band gaps, as well as some wider gap or more ionic systems used commercially. The lattice parameters are superior to those predicted by the screened hybrid functional of Heyd, Scuseria and Ernzerhof (HSE), and provide a significant improvement over geometries predicted by semilocal functionals. HISS also yields band gaps superior to those produced by functionals developed specifically for the solid state. Timings indicate that HISS is more computationally efficient than HSE, implying that the high quality lattice constants coupled with improved optical band gap predictions render HISS a useful adjunct to HSE in the modeling of geometry-sensitive semiconductors.
description: 10 pages, 5 figures, 3 tables
Home Healthcare Process: Challenges and Open Issues
Creators: name: Arbaoui, Selma
name: Cislo, N.
name: Smith-Guerin, N.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Home healthcare is part of the most critical research and development healthcare areas. The objective is to decentralize healthcare, leading to a shift from in-hospital care to more advanced home healthcare, while improving efficiency, individualisation, equity and quality of healthcare delivery and limiting financial resources. In this paper, we adopt a process approach to tackle the home healthcare domain in order to highlight the importance of organisational aspects in the success of an ICT-home healthcare project. Such projects should be supported by an automated system, called in this paper, Home Healthcare support system. We examine HH processes from two selected perspectives (complexity and dynamics) to illustrate the requirements of a HH support system. We advocate that satisfying these requirements is part of the most important challenges in the home healthcare research domain and we propose first track of solutions by attempting to benefit from past experiences in 3 process research communities.
EXPERIMENTAL STUDY ON THE EFFECT OF WOOD SPECIES ON THE PERFORMANCE OF WOOD PLASTIC COMPOSITE
Creators: name: ABRAHAM MURAD HAMZA
Publisher: name: Zenodo
Year: 2021

description: The actual demand for new materials has motivated the research of alternative materials especially, composites materials. With its market demand expands and increased application areas, products of wood plastic composite (WPC) have been developing and growing rapidly in many countries over the last decades. There are a lot of studies on WPCs in which most of them are not focused on the effect of wood species on the performance of wood-plastic composites (WPCs). This paper attempt to investigate the effect of wood species which are waste from furniture industries on the performance of wood-plastic composites (WPCs). 30wt% of Cordia Africana’s /wanza’s/ and 30wt% Austria pine’s wood species fine sawdust separately used with 70wt% of pure high-density polyethylene (HDPE) in two samples and the mixture of both species sawdust in 15wt% of each in another sample were used to prepare the samples and studied the performance of the resulted composites. The composites were tested with tensile and impact tests followed by morphological analysis, in addition, a physical property test was also performed which is the water absorption test
Enough With Trickle Down Reproducibility: Scientists, Open This Gate! Scientists, Tear Down This Wall!
Creators: name: Ram, Karthik
Publisher: name: Zenodo
Year: 2016
Subjects: reproducibility

description: Slides from my invited talk at the Joint Statistical Meeting held in Chicago on August  3rd. Interactive version of these slides available at http://inundata.org/talks/jsm2016/#/
title: Besondere Bestimmungen der Prüfungsordnung für den Bachelorstudiengang Lehramt an Haupt-, Real-, Sekundar- und Gesamtschulen mit dem Unterrichtsfach Geschichte an der Universität Paderborn : vom 22. Juli 2016
Creators: name: Universität Paderborn
Publisher: name: UB-PAD - Paderborn University Library
Year: 2016
Subjects: subject: Sozialwissenschaften
subject: Bildung und Erziehung
subject: Hochschulbildung

description: Amtliche Mitteilungen / Universität Paderborn
Active Warming of Open Cup Nests Reveals Contrasting Effects of Temperature on Development and Size in Wild Songbirds
Creators: name: Klemz, Madeleine
Publisher: name: My University
Year: 2022
Subjects: subject: birds
subject: climate change
subject: size

description: Temperatures during development can affect bird physiology and morphology. As the climate changes, understanding these impacts across diverse sets of species in natural systems is increasingly important. Previous studies of the relationship between temperature and bird development have largely relied on field experiments using nest boxes, or have warmed eggs ex situ in an incubator. Fewer studies have tried to manipulate the temperature of open cup nests, largely limiting experiments to cavity-nesting species that are willing to nest in nest boxes. We developed an active warming device that consistently and accurately warms nests to a specified level above the ambient temperature and maintains this elevated temperature throughout the incubation period. We then used this method to warm the nests of three North American passerines—gray catbirds (Dumetella carolinensis), American robins (Turdus migratorius), and northern cardinals (Cardinalis cardinalis)—2C above ambient temperature throughout the incubation and nestling period, and to quantify the impacts of warming on developmental rate and size. We find contrasting effects of the experimental warming across species, with warming resulting in faster development and smaller size in catbirds and slower development and larger size in robins. These contrasting responses may be explained by differences in the relationships between the ambient temperature at the study site and the optimum developmental temperature for each species. Our results show that large scale comparative analyses of warming-mediated developmental plasticity are needed in order to better-understand observed impacts of global warming on birds.