cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Exploration and Estimation Petroleum Reserves.pdf
Creators: name: Mahmoud, Mahmoud
name: Abdelrahman, Dr. Eman Mohamed
Publisher: name: figshare
Year: 2023
Subjects: Applied geophysics
Electrical and electromagnetic methods in geophysics
Gravimetrics
Magnetism and palaeomagnetism
Petrophysics and rock mechanics
Seismology and seismic exploration

description: Petroleum System is principally composed of seven key elements in sedimentary basins: Source, reservoir, seal, trap, timing, maturation and migration. (4 Elements and 3 Processes of Petroleum System). Petroleum systems analysis indicates that most hydrocarbon fluids found in the Basins which are single-phase dew point fluids (gas?condensates). However, these fluids are expected to drop out oil rims if they migrate into lower pressure. The role of exploration is to provide the information required to exploit the best opportunities presented in the choice of areas, and to manage research operations on the acquired blocks. The Exploration techniques for Petroleum can be separated into two ways; surface geology i.e. Airborne Imagery, Gravimetric method, Magnetic method and Seismic method. and subsurface geology i.e. well logging, Coring and Well testing. Estimating hydrocarbon reserves is a complex process that involves integrating geological and engineering data. Depending on the amount and quality of data available. The static methods indicate to analogy and volumetric calculation which used before the start of production in the reservoir, while dynamic methods involved performance techniques applied after production started in the field
Robustness of quantum key distribution with discrete and continuous variables to channel noise
Creators: name: Lasota, Mikołaj
name: Filip, Radim
name: Usenko, Vladyslav C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the robustness of quantum key distribution protocols using discrete or continuous variables to the channel noise. We introduce the model of such noise based on coupling of the signal to a thermal reservoir, typical for continuous-variable quantum key distribution, to the discrete-variable case. Then we perform a comparison of the bounds on the tolerable channel noise between these two kinds of protocols using the same noise parametrization, in the case of implementation which is perfect otherwise. Obtained results show that continuous-variable protocols can exhibit similar robustness to the channel noise when the transmittance of the channel is relatively high. However, for strong loss discrete-variable protocols are superior and can overcome even the infinite-squeezing continuous-variable protocol while using limited nonclassical resources. The requirement on the probability of a single-photon production which would have to be fulfilled by a practical source of photons in order to demonstrate such superiority is feasible thanks to the recent rapid development in this field.
description: 13 pages, 11 figures
Characterization of electronic structure of periodically strained graphene
Creators: name: Aslani, Marjan
name: Garner, C. Michael
name: Kumar, Suhas
name: Nordlund, Dennis
name: Pianetta, Piero
name: Nishi, Yoshio
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We induced periodic biaxial tensile strain in polycrystalline graphene by wrapping it over a substrate with repeating pillar-like structures with a periodicity of 600 nm. Using Raman spectroscopy, we determined to have introduced biaxial strains in graphene in the range of 0.4% to 0.7%. Its band structure was characterized using photoemission from valance bands, shifts in the secondary electron emission, and x-ray absorption from the carbon 1s levels to the unoccupied graphene conduction bands. It was observed that relative to unstrained graphene, strained graphene had a higher work function and higher density of states in the valence and conduction bands. We measured the conductivity of the strained and unstrained graphene in response to a gate voltage and correlated the changes in their behavior to the changes in the electronic structure. From these sets of data, we propose a simple band diagram representing graphene with periodic biaxial strain.
Does the 62-day X-ray periodicity come from ULX M82 X-1?
Creators: name: Qiu, Yanli
name: Liu, JiFeng
name: Guo, Jincheng
name: Wang, Jing
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: M82 X-1 is the brightest ultraluminous X-ray source in starburst galaxy M82 and is one of the best intermediate mass black hole candidates. Previous studies based on the Rossi X-ray Timing Explorer/Proportional Counter Array (RXTE/PCA) reported a regular X-ray flux modulation of M82 with a period of 62 days, and attributed this periodic modulation to M82 X-1. However, this modulation is not necessarily from M82 X-1 because RXTE/PCA has a very poor spatial resolution of ~1 degree. In this work, we analyzed 1000 days of monitoring data of M82 X-1 from the Swift/X-ray telescope (XRT), which has a much better spatial resolution than RXTE/PCA. The periodicity distribution map of M82 reveals that the 62-day periodicity is most likely not from M82 X-1, but from the summed contributions of several periodic X-ray sources 4 arcsec southeast of M82 X-1. However, Swift/XRT is not able to resolve those periodic sources and locate the precise origin of the periodicity of M82. Thus, more long-term observations with higher spatial resolution are required.
description: 5 pages, 5 figures
An Overview of the New Test Stand for H- Ion Sources at FNAL
Creators: name: Sosa, A.
name: Bollinger, D. S.
name: Duel, K.
name: Karns, P.
name: Pellico, W.
name: Tan, C. Y.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: A new test stand at FNAL is being constructed to carry out experiments to develop and upgrade the present magnetron-type sources of H- ions of up to 80 mA at 35 keV in the context of the Proton Improvement Plan (PIP). The aim of this plan is to provide high-power proton beams for the experiments at FNAL. The technical details of the construction and layout of this test stand are presented, along with a prospective set of diagnostics to monitor the sources.
description: 3 pp. Contributed paper, published as part of the Proceedings of the 16th International Conference on Ion Sources (ICIS 2015), New York City, NY, August 2015
Geographies of Pain: The Mexican Movement for Peace with Justice and Dignity and the Configuration of Spaces of Victimhood
Creators: name: Garcia de Alba Diaz, Ana Catalina
Publisher: name: University of North Carolina at Chapel Hill
Year: 2013

description: Since 2006, Mexico has been embedded in a severe humanitarian and social crisis brought about by Calderon's drug war security strategy. On March 2011, the Movement for Peace with Justice and Dignity (MPJD), a social movement of victims was created in reaction to the growing death toll of drug related violence, the increase in human rights violations and the perception of a systematic effort by the government to belittle social costs of the war by manipulating the official narrative. Through protest marches, the MPJD articulated spaces of shared victimhood and set the path for victims' pain to be collectivized and politicized. This thesis illustrates how the spatial aspects of the official narrative of the drug war are countered by the emotional geographies constructed by the MPJD. These spaces of pain allowed for distinct emotional geographies that capture media attention to motivate collective action setting the foundations for reconstructing the social pact.
A Novel Mechanism of Epigenetic Regulation by Nitric Oxide: Inhibition of DNA Demethylation in Cancer
Creators: name: Palczewski, Marianne Barbara
Publisher: name: University of Illinois at Chicago
Year: 2023

description: The expression of inducible nitric oxide synthase (iNOS) predicts poor outcomes in triple-negative breast cancer (TNBC) patients, yet molecular mechanisms to explain this association are lacking. Epigenetics, and particularly DNA methylation, contributes significantly to the pathology of cancers including TNBC. DNA methylation (5mC) at CpG sites in the human genome is a function of the concerted activities of DNA methyltransferases (DNMT) which catalyze methylation and ten-eleven translocation (TET) dioxygenases which demethylate cytosine residues. AlkB Homolog 2 (ALKBH2) is a DNA damage response demethylase that repairs 1-methyladenine and 3-methylcytosine on alkylated DNA. Both these DNA demethylases are in the family of Fe(II)/2-OG-dependent dioxygenases which contains other enzymes that have been shown to be inhibited by nitric oxide (NO). Here, we report that the signaling molecule NO is a potent, dose-dependent, and reversible inhibitor of TET and ALKBH2 enzyme activity. Electron paramagnetic resonance (EPR) spectroscopy revealed that NO directly binds to ferrous iron in the TET catalytic pocket, forming a dinitrosyliron complex (DNIC). Genome-wide oxidative bisulfite sequencing and ELISA showed that NO causes global increases in 5mC while global 5-hydroxymethylcytosine (5hmC) levels remain unchanged. These effects were confirmed in cell-line derived and patient-derived mouse xenografts treated with a NOS inhibitor. The enrichment or absence of these adducts at gene-regulatory loci correlated to the expression of tumor-associated genes, and western blot verified that these changes are not due to altered TET or ALKBH2 protein levels or methyltransferase expression. We also observed for the first time that NO affects chromatin conformation by significantly increasing chromatin packing scaling. In summary, we have discovered a completely novel epigenetic signaling mechanism of NO by demonstrating for the first time how NO can regulate DNA methylation to control the expression of tumor-permissive genes. These studies provide a causal link between tumor NO production and more aggressive cancers and reveal potential new therapeutic pathways to target.
Characteristics of undulatory locomotion in granular media
Creators: name: Peng, Zhiwei
name: Pak, On Shun
name: Elfring, Gwynn J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Undulatory locomotion is ubiquitous in nature and observed in different media, from the swimming of flagellated microorganisms in biological fluids, to the slithering of snakes on land, or the locomotion of sandfish lizards in sand. Despite the similarity in the undulating pattern, the swimming characteristics depend on the rheological properties of different media. Analysis of locomotion in granular materials is relatively less developed compared with fluids partially due to a lack of validated force models but recently a resistive force theory in granular media has been proposed and shown useful in studying the locomotion of a sand-swimming lizard. Here we employ the proposed model to investigate the swimming characteristics of a slender filament, of both finite and infinite length, undulating in a granular medium and compare the results with swimming in viscous fluids. In particular, we characterize the effects of drifting and pitching in terms of propulsion speed and efficiency for a finite sinusoidal swimmer. We also find that, similar to Lighthill's results using resistive force theory in viscous fluids, the sawtooth swimmer is the optimal waveform for propulsion speed at a given power consumption in granular media. The results complement our understanding of undulatory locomotion and provide insights into the effective design of locomotive systems in granular media.
Microscopic origin of Heisenberg and non-Heisenberg exchange interactions in ferromagnetic bcc Fe
Creators: name: Kvashnin, Y. O.
name: Cardias, R.
name: Szilva, A.
name: Di Marco, I.
name: Katsnelson, M. I.
name: Lichtenstein, A. I.
name: Nordström, L.
name: Klautau, A. B.
name: Eriksson, O.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: By means of first principles calculations we investigate the nature of exchange coupling in ferromagnetic bcc Fe on a microscopic level. Analyzing the basic electronic structure reveals a drastic difference between the $3d$ orbitals of $E_g$ and $T_{2g}$ symmetries. The latter ones define the shape of the Fermi surface, while the former ones form weakly-interacting impurity levels. We demonstrate that, as a result of this, in Fe the $T_{2g}$ orbitals participate in exchange interactions, which are only weakly dependent on the configuration of the spin moments and thus can be classified as Heisenberg-like. These couplings are shown to be driven by Fermi surface nesting. In contrast, for the $E_g$ states the Heisenberg picture breaks down, since the corresponding contribution to the exchange interactions is shown to strongly depend on the reference state they are extracted from. Our analysis of the nearest-neighbour coupling indicates that the interactions among $E_g$ states are mainly proportional to the corresponding hopping integral and thus can be attributed to be of double-exchange origin.
description: 5 pages, 4 figures
Bibliometric assessment of sporotrichosis research
Creators: name: Albuquerque, Priscila
name: Almeida-Paes, Rodrigo
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Diseases
subject: Medicine and Health Sciences
subject: Life Sciences
subject: Microbiology
subject: FOS: Biological sciences
subject: Bacterial Infections and Mycoses

description: Sporotrichosis has recently emerged as an important mycosis worldwide, with diverse transmission and epidemiologic profiles. For instance, in Brazil most cases are related to zoonotic transmission from naturally infected cats, and the majority of cases in China are due to external injury with environmental materials. Publications about sporotrichosis and its etiologic agent may guide the direction of the research in this field. It can also define priorities for future studies. In this study, we evaluated the trends of global research in Sporothrix and sporotrichosis, based on publications records retrieved from Scopus and Web of Science databases for the period of 1945 to 2018. The overall productivity in the field, its geographical and temporal distribution, research themes, co-authorship networks, funding sources, and the implications of research findings for health practice were assessed using bibliometric approaches. A total of 4,007 unique publications involving 102 countries were retrieved, most of them published after 2000. Authors based on institutions from the United States of America and Brazil accounted for 57.4% of the publications. Brazil was the leading country in terms of research collaboration and networking, with co-authorship with 45 countries. The thematic mapping revealed a temporal shift from clinical to applied research. Despite the large number of countries publishing in this field, most of funded studies came from Brazil, Mexico, China, South Africa, or the United States of America. The analysis of content identified few specific public health recommendations for prevention, case-management, or research. Moreover, most papers do not have a clearly defined intended audience. As the research in this field is emerging in several countries, with the generation of large number of data, it is necessary that scientists strengthen efforts to translate the research results into practice to curb this neglected infection.
X-ray long-term variations in the low-luminosity AGN NGC835 and its circumnuclear emission
Creators: name: Gonzalez-Martin, O.
name: Hernandez-Garcia, L.
name: Masegosa, J.
name: Marquez, I.
name: Rodriguez-Espinosa, J. M.
name: Acosta-Pulido, J. A.
name: Alonso-Herrero, A.
name: Arredondo, D. Esparza
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Obscured active galactic nuclei (AGNs) are thought to be very common in the Universe. Observations and surveys have shown that the number of sources increases for near galaxies and at the low-luminosity regime (the so-called LLAGNs). Furthermore, many AGNs show changes in their obscuration properties at X-rays that may suggest a configuration of clouds very close to the accretion disk. However, these variations could also be due to changes in the intrinsic continuum of the source. It is therefore important to study nearby AGN to better understand the locus and distribution of clouds in the neighbourhood of the nucleus. We aim to study the nuclear obscuration of LLAGN NGC835 and its extended emission using mid-infrared observations. We present mid-infrared 11.5 microns imaging of the LLAGN galaxy NGC835 obtained with the instrument CanariCam in the Gran Telescopio CANARIAS (GTC), archival Spitzer/IRS spectroscopy, and archival Chandra data observed in 2000, 2008, and 2013. The GTC/CanariCam 11.5 microns image reveals faint extended emission out to ~6 arcsec. We obtained a nuclear flux of F(11.5 microns) ~18 mJy, whereas the extended emission accounts for 90% of the total flux within the 6 arcsec. This means that the low angular resolution (~4 arcsec) IRS spectrum is dominated by this extended emission and not by the AGN, clearly seen in the Spitzer/IRS spectrum. Although the extended soft X-ray emission shows some resemblance with that of the mid-infrared, the knots seen at X-rays are mostly located in the inner side of this mid-infrared emission. The nuclear X-ray spectrum of the source has undergone a spectral change between 2000/2008 and 2013. We argue that this is most probably due to changes in the hydrogen column density from ~ 8x10E+23 cm-2 to ~ 3x10E+23 cm-2. NGC835 therefore is one of the few LLAGN, together with NGC1052, in which changes in the absorber can be claimed.
description: 8 pages, 6 figures, accepted for publication in A&A
Family size preferences in early adulthood: measurement error and dimensionality
Creators: name: Rybinska, Anna
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: The intended and the desired number of children are widely used measures in family studies yet, despite their popularity, some key questions about these measures remain unanswered. First, little is known about their statistical reliability. Measurement error in either, or both, constructs can cause biased estimation, blurring the relation between these concepts and observed childbearing behavior. Secondly, while extant analyses provide evidence for a distinction between childbearing intentions and desires, these studies do not consider their reliability. Given their wide use, it is necessary to confirm the dimensionality of these concepts and to do so while accounting for measurement error. In this study, the link between childbearing desires, intentions, and behavior is revisited using a structural equation modeling (SEM) approach in which I test if childbearing desires and intentions are distinct constructs while accounting for measurement error. Using data from the 1979 National Longitudinal Survey of Youth I estimate latent intentions and desires and then use the results to estimate the odds of having a(nother) child within the next three years. The results indicate that measurement error causes major bias in the relationship between childbearing intentions, desires and behavior. In models that account for measurement error, the effects of childbearing intentions and desires on childbearing behavior are twice as large as in models that assume perfect measurement. In addition, I find that while childbearing intentions and desires are distinct constructs, when used independently they might predict childbearing behavior with similar precision. Combined these results suggest that researchers interested in childbearing behaviors need to account for both measurement error and the distinction between childbearing intentions and desires in their models or risk severe bias in their results.
On the strong metric dimension of Cartesian sum graphs
Creators: name: Kuziak, Dorota
name: Yero, Ismael G.
name: Rodríguez-Velázquez, Juan A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C12, 05C69, 05C76

description: A vertex $w$ of a connected graph $G$ strongly resolves two vertices $u,v\in V(G)$, if there exists some shortest $u-w$ path containing $v$ or some shortest $v-w$ path containing $u$. A set $S$ of vertices is a strong metric generator for $G$ if every pair of vertices of $G$ is strongly resolved by some vertex of $S$. The smallest cardinality of a strong metric generator for $G$ is called the strong metric dimension of $G$. In this paper we obtain several tight bounds or closed formulae for the strong metric dimension of the Cartesian sum of graphs in terms of the strong metric dimension, clique number or twins-free clique number of its factor graphs.
description: arXiv admin note: text overlap with arXiv:1402.2663
Resilient Pedagogy Survey File.pdf
Creators: name: Johnson, Samantha
name: Fleming, Jessica K.
name: Caputo, Jennifer
name: Spilios, Katherine
name: Mel, Astrid
name: Stenson, Mary
Publisher: name: figshare
Year: 2023
Subjects: Medicine, nursing and health curriculum and pedagogy

description: This survey was used to collect data for a research study based on emergency remote teaching as a response to the COVID-19 pandemic.
Sensations, concepts and understanding
Creators: name: Reines, Maria Francisca
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2006

description: In this paper I argue that at least some of our concepts include phenomenal content. We could not understand the temperature talk of creatures that made non-inferential temperature ascriptions on the basis of a kind of temperature-vision rather than by touch. We could not understand them because we don't share the same sensations. If this is correct then it suggests that some concepts may be partially constituted by phenomenal content. This suggests in turn, that radically different phenomenology might make for conceptual differences sufficiently significant to constitute a difference in conceptual scheme. However, this possibility poses no threat to intra-specific understanding. The kind of phenomenal difference that can make for a difference in concept is limited primarily to creatures with different sense organs. Two creatures with radically different sense organs will have different conceptual schemes.
Texture and Wettability of Metallic Lotus Leaves
Creators: name: Frankiewicz, Christophe
name: Attinger, Daniel
Publisher: name: arXiv
Year: 2015
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Superhydrophobic surfaces with the self-cleaning behavior of lotus leaves are sought for drag reduction and phase change heat transfer applications. These superrepellent surfaces have traditionally been fabricated by random or deterministic texturing of a hydrophobic material. Recently, superrepellent surfaces have also been made from hydrophilic materials, by deterministic texturing using photolithography, without low-surface energy coating. Here, we show that hydrophilic materials can also be made superrepellent to water by chemical texturing, a stochastic rather than deterministic process. These metallic surfaces are the first analog of lotus leaves, in terms of wettability, texture and repellency. A mechanistic model is also proposed to describe the influence of multiple tiers of roughness on wettability and repellency. This demonstrated ability to make hydrophilic materials superrepellent without deterministic structuring or additional coatings opens the way to large scale and robust manufacturing of superrepellent surfaces.
Side Population Sorting Separates Subfractions of Intestinal Stem Cells
Creators: name: von Furstenberg, Richard Joseph
Publisher: name: University of North Carolina at Chapel Hill
Year: 2013

description: The existence of intestinal stem cells (ISCs) which generate the epithelium has been recognized for over three decades. Recent work suggests there are two distinct ISC populations: active ISCs which are important for epithelial homeostasis, and quiescent ISCs that drive proliferation after injury. Although quiescent ISCs may be of greater therapeutic use, to date, isolation of this population has been achieved only with fluorescent reporter mice. My goal was to identify an isolation method for both ISC populations that can be used in wild-type mice and eventually humans. In the following experiments I use side population (SP) sorting to demonstrate that the USP: contains reporter cells of the active ISC, is highly proliferative by S phase analysis, and expresses high levels of the known active ISC transcripts. In contrast the LSP is: non-proliferative, de-enriched for active ISC transcripts, and enriched for those of quiescent ISCs.
Halpha line profile asymmetries and the chromospheric flare velocity field
Creators: name: Kuridze, D.
name: Mathioudakis, M.
name: Simões, P. J. A.
name: van der Voort, L. Rouppe
name: Carlsson, M.
name: Jafarzadeh, S.
name: Allred, J. C.
name: Kowalski, A. F.
name: Kennedy, M.
name: Fletcher, L.
name: Graham, D.
name: Keenan, F. P.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The asymmetries observed in the line profiles of solar flares can provide important diagnostics of the properties and dynamics of the flaring atmosphere. In this paper the evolution of the Halpha and Ca II 8542 Å lines are studied using high spatial, temporal and spectral resolution ground-based observations of an M1.1 flare obtained with the Swedish 1-m Solar Telescope. The temporal evolution of the Halpha line profiles from the flare kernel shows excess emission in the red wing (red asymmetry) before flare maximum, and excess in the blue wing (blue asymmetry) after maximum. However, the Ca II 8542 Å line does not follow the same pattern, showing only a weak red asymmetry during the flare. RADYN simulations are used to synthesise spectral line profiles for the flaring atmosphere, and good agreement is found with the observations. We show that the red asymmetry observed in Halpha is not necessarily associated with plasma downflows, and the blue asymmetry may not be related to plasma upflows. Indeed, we conclude that the steep velocity gradients in the flaring chromosphere modifies the wavelength of the central reversal in the Halpha line profile. The shift in the wavelength of maximum opacity to shorter and longer wavelengths generates the red and blue asymmetries, respectively.
description: 8 pages, 10 figures, accepted in ApJ
Quasi-Hamiltonian description of classical spin
Creators: name: Matsyuk, Roman
Publisher: name: arXiv
Year: 2015
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences
subject: 70H40, 70E99, 70H50, 49N45, 49S05

description: A family of Lagrange functions is considered, each producing the classical relativistic free spinning particle equation of motion of the third order. On this grounds a generalized Hamilton-Ostrohrads'kyj description of the free relativistic spherical top is proposed, which comply with the Pirani supplementary conditions.
description: in Ukrainian
Magnetoelectric coupling induced by interfacial orbital reconstruction
Creators: name: Cui, Bin
name: Song, Cheng
name: Mao, Haijun
name: Wu, Huaqiang
name: Li, Fan
name: Peng, Jingjing
name: Wang, Guangyue
name: Zeng, Fei
name: Pan, Feng
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The magnetoelectric coupling effect with profound physics and enormous potential applications has provoked a great number of research activities in materials science. Here, we report that the reversible orbital reconstruction driven by ferroelectric polarization modulates the magnetic performance of ferroelectric ferromagnetic heterostructure. Mn in plane orbital occupancy and related interfacial exotic magnetic state are enhanced and weakened by the negative and positive electric field, respectively. Our findings thus not only present a broad opportunity to fill the missing member, orbital in the mechanism of magnetoelectric coupling, but also make the orbital degree of freedom straight forward to the application in microelectronic device.
description: 26 pages, 5 figures, Accepted by Advanced Materials
Cosmic ray antiprotons and the Single Source model
Creators: name: Erlykin, Anatoly
name: Wolfendale, Arnold
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In view of the fact that the AMS-02 instrument has recently been used to make preliminary observations of the ratio of the antiprotons (\-{P}) to protons (P) in the primary cosmic radiation we have returned to our idea of signatures of a local recent supernova. We find that at the present level of accuracy there is no inconsistency between our predictions for the \-{P}/P ratio to some hundreds of GeV using the preliminary observations.
description: 7 PAGES, 3 FIGURES
On the Matsumoto-Yor property in free probability
Creators: name: Szpojankowski, Kamil
Publisher: name: arXiv
Year: 2015
Subjects: subject: Operator Algebras (math.OA)
subject: Probability (math.PR)
subject: FOS: Mathematics

description: We study the Matsumoto-Yor property in free probability. We prove that the limiting empirical eigenvalue distribution of the GIG matrices and the Marchenko-Pastur distribution have the free Matsumoto-Yor property. Finally we characterize these distributions by a regression properties in free probability.
Monolithically Integrated O-Band Coherent ROSA Featuring 2D Grating Couplers for Self-Homodyne Intra Data Center Links
Creators: name: Seiler, Pascal M.
name: Georgieva, Galina
name: Peczek, Anna
name: Oberon, Matthieu
name: Mai, Christian
name: Lischke, Stefan
name: Malignaggi, Andrea
name: Zimmermann, Lars
Publisher: name: Technische Universität Berlin
Year: 2023
Subjects: subject: 600 Technik, Medizin, angewandte Wissenschaften::600 Technik::600 Technik, Technologie
subject: BiCMOS
subject: coherent communication
subject: data center
subject: ePIC
subject: O-band
subject: self-homodyne

description: In this work, we present an O-band dual-polarization coherent receiver optical sub-assembly (cROSA), monolithically integrated in a 0.25 μ m BiCMOS technology. The receiver features 248 nm deep ultra violet compatible 2-dimensional grating couplers (2D-GRCs), and an adaptive polarization controller, suitable for mitigation of local oscillator induced power fading in self-homodyne transmission systems. The cROSA is evaluated in system experiments at 64 GBd quadrature-phase shift-keying. Experimental results are related to grating coupler induced polarization crosstalk through Monte-Carlo simulations. Second generation 2D-GRCs are proposed.
Temperate Climate
Creators: name: Raji, Babak
name: Tenpierik, Martin J.
name: Van Den Dobbelsteen, Andy
Publisher: name: A+BE | Architecture and the Built Environment
Year: 2018

description: The building envelope is the interface between the interior of the building and the outdoor environment. A building’s energy consumption to a large extent depends on certain envelope design elements. As a consequence, for achieving high levels of energysaving in buildings, design measures with high impact should be firstly defined and then optimised. This paper aims at finding energy-saving solutions for the envelope design of high-rise office buildings in temperate climates. For this purpose, an existing tall office building is selected as a typical high-rise design in the Netherlands and the energy use prior and after refurbishment is compared through computer simulations with DesignBuilder. A sensitivity analysis in line with a large number of energy performance simulations showed which building envelope parameters have a significant impact on the building’s energy consumption; hence need more consideration for improvement. The four measures selected for uplifting the energy performance of the building envelope include glazing type, window-to-wall ratio, sun shading and roof strategies. By taking the base case as a reference and optimising one parameter at each step, this study resulted in a high-performance envelope design that offers a considerable energy-saving by around 42% for total energy use, 64% for heating and 34% for electric lighting.
description: A+BE | Architecture and the Built Environment, No. 19 (2018): Sustainable High-rises
Envelope design strategies
Creators: name: Raji, Babak
Publisher: name: A+BE | Architecture and the Built Environment
Year: 2018

description: The main objective of this study is to assess the role of building envelope design strategies on reducing the energy consumption of typical high-rise office buildings in tropical climates. For this purpose, the KOMTAR building was selected as a typical case building, and the energy usage pattern prior to and after the refurbishment was compared through a computer simulation. Through the simulations, the effect of each strategy was quantified as the percentage of reduction or increase in the total energy usage compared to the reference model. However, to have a better understanding of how retrofitting strategies can contribute to energy-saving, the effect of each strategy on cooling and lighting energy demand will be discussed additionally. In some cases, in order to apply a new strategy, there is a need to change the floor plan configuration, which means a different floor area of the conditioned space. In order to make different strategies comparable, the total energy consumption per conditioned area was used as an indicator.
description: A+BE | Architecture and the Built Environment, No. 19 (2018): Sustainable High-rises
nCTEQ15 - Global analysis of nuclear parton distributions with uncertainties
Creators: name: Kusina, A.
name: Kovarik, K.
name: Jezo, T.
name: Clark, D. B.
name: Keppel, C.
name: Lyonnet, F.
name: Morfin, J. G.
name: Olness, F. I.
name: Owens, J. F.
name: Schienbein, I.
name: Yu, J. Y.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present the first official release of the nCTEQ nuclear parton distribution functions with errors. The main addition to the previous nCTEQ PDFs is the introduction of PDF uncertainties based on the Hessian method. Another important addition is the inclusion of pion production data from RHIC that give us a handle on constraining the gluon PDF. This contribution summarizes our results from arXiv:1509.00792 and concentrates on the comparison with other groups providing nuclear parton distributions.
description: Presented at the XXIII International Workshop on Deep Inelastic Scattering and Related Subjects, April 27 - May 1, 2015, Southern Methodist University, Dallas, Texas
Fermilab Muon Campus g-2 Cryogenic Distribution Remote Control System
Creators: name: Pei, L.
name: Theilacker, J.
name: Klebaner, A.
name: Soyars, W.
name: Bossert, R.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: The Muon Campus (MC) is able to measure Muon g-2 with high precision and comparing its value to the theoretical prediction. The MC has four 300 KW screw compressors and four liquid helium refrigerators. The centerpiece of the Muon g-2 experiment at Fermilab is a large, 50-foot-diameter superconducting muon storage ring. This one-of-a-kind ring, made of steel, aluminum and superconducting wire, was built for the previous g-2 experiment at Brookhaven. Due to each subsystem has to be far away from each other and be placed in the distant location, therefore, Siemens Process Control System PCS7-400, Automation Direct DL205 & DL05 PLC, Synoptic and Fermilab ACNET HMI are the ideal choices as the MC g-2 cryogenic distribution real-time and on-Line remote control system. This paper presents a method which has been successfully used by many Fermilab distribution cryogenic real-time and On-Line remote control systems.
description: 7 pp
Higgs Boson Production via Gluon Fusion: Soft-Gluon Resummation including Mass Effects
Creators: name: Schmidt, Timo
name: Spira, Michael
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We analyze soft and collinear gluon resummation effects at the N$^3$LL level for Standard Model Higgs boson production via gluon fusion $gg\to H$ and the neutral scalar and pseudoscalar Higgs bosons of the minimal supersymmetric extension at the N$^3$LL and NNLL level, respectively. We introduce refinements in the treatment of quark mass effects and subleading collinear gluon effects within the resummation. Soft and collinear gluon resummation effects amount to up to about 5% beyond the fixed-order results for scalar and pseudoscalar Higgs boson production.
description: 24 pages, 3 figures, comments and references added, corrected scale dependence, conclusions unchanged
Healthcare professionals' knowledge of aphasia: conveying prognosis for language recovery and life participation to patients
Creators: name: Mortimer, Kaitlyn T.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: Aphasia is an acquired disorder that affects all language modalities, but does not affect intelligence. Recovery from aphasia is variable and may continue for years after onset. Life participation is possible for people with aphasia and effective strategies can be used to facilitate communication. The purpose of this study was to understand respondents' knowledge of aphasia, of prognosis for recovery and life participation, and of strategies used for communicating. Respondents reported level of comfort felt when answering patients' questions about aphasia. Information was obtained through a questionnaire administered to resident physicians in neurology, occupational therapy students, and physical therapy students. Results indicated respondents feel somewhat comfortable answering patients' questions about aphasia. Respondents had decreased understanding of language modalities affected by aphasia, language recovery time, and life participation outcomes; but had adequate knowledge of strategies used to facilitate communication. Education is recommended to increase respondents' overall knowledge of aphasia in order to improve interactions with patients with aphasia.
Determination of the symmetry classes of orientational ordering tensors
Creators: name: Turzi, Stefano S.
name: Bisi, Fulvio
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The orientational order of nematic liquid crystals is traditionally studied by means of the second-rank ordering tensor $\mathbb{S}$. When this is calculated through experiments or simulations, the symmetry group of the phase is not known \emph{a-priori}, but needs to be deduced from the numerical realisation of $\mathbb{S}$, which is affected by numerical errors. There is no generally accepted procedure to perform this analysis. Here, we provide a new algorithm suited to identifying the symmetry group of the phase. As a by product, we prove that there are only five phase-symmetry classes of the second-rank ordering tensor and give a canonical representation of $\mathbb{S}$ for each class. The nearest tensor of the assigned symmetry is determined by group-projection. In order to test our procedure, we generate uniaxial and biaxial phases in a system of interacting particles, endowed with $D_{\infty h}$ or $D_{2h}$, which mimic the outcome of Monte-Carlo simulations. The actual symmetry of the phases is correctly identified, along with the optimal choice of laboratory frame.
Towards QoE-Aware Dynamic Adaptive Streaming Over HTTP
Creators: name: Sobhani, Ashkan
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2017
Subjects: Dynamic Adaptive Streaming Over HTTP
DASH
QoE
Optimization
Fairness
Fuzzy-Logic

description: HTTP Adaptive Streaming (HAS) has now become ubiquitous, and it accounts for a large proportion of multimedia delivery over the Internet. Consequently, it poses new challenges for content providers and network operators. In this study, we aim to improve the user’s Quality of Experience (QoE) for HAS using from two main approaches including client centric approach and network assisted approach. In the client centric approach, we address the issue of enhancing the client’s QoE by proposing a fuzzy logic–based video bitrate adaptation and prediction mechanism for Dynamic Adaptive Streaming over HTTP (DASH) players. This adaptation mechanism allows HAS players to take appropriate actions sooner than existing methods to prevent playback interruptions caused by buffer underrun and reduce the ON-OFF traffic phenomena, which causes instability and unfairness among competing players. Our results show that compared to other studied methods, our proposed method has two advantages: better fairness among multiple competing players by almost 50% on average and as much as 80% as indicated by Jain’s fairness index, and better perceived quality of video by almost 8% on average and as much as 17%, according to the eMOS model. In the network assisted approach, we propose a novel mechanism for HAS stream adaptation in the context of wireless mobile networks. The proposed mechanism leverages recent advances in the 3GPP DASH specification, including the optional feature of QoE measurement and reporting for DASH clients. As part of the proposed mechanism, we formulate a utility-maximization problem that incorporates factors influencing QoE to specify the optimum value of Quality of Service (QoS)-related parameters for HAS streams within a wireless mobile network. The results of our simulations demonstrate that our proposed system results in better perceived quality of video, measured by Mean Opinion Score (MOS), by almost 7% on average, while lowering the freezing period by almost 20% on average across HAS users when compared to other approaches where HAS users only rely on local adaptation logics.
Integral formula for elliptic SOS models with domain walls and a reflecting end
Creators: name: Lamers, J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In this paper we extend previous work of Galleas and the author to elliptic SOS models. We demonstrate that the dynamical reflection algebra can be exploited to obtain a functional equation characterizing the partition function of an elliptic SOS model with domain-wall boundaries and one reflecting end. Special attention is paid to the structure of the functional equation. Through this approach we find a novel multiple-integral formula for that partition function.
description: 31 pages, 3 figures; v2: minor improvements, reference added
Introduction
Creators: name: Raji, Babak
Publisher: name: A+BE | Architecture and the Built Environment
Year: 2018

description: The main aim of this research is to reduce the energy demand of tall office buildings through architectural design. To achieve high levels of energy-saving, however, it is important to acquire a good understanding of how architectural design strategies can influence the total energy use (and different energy end-uses) individually and as a group. Energy simulations, if well-validated, can help us to correctly apply design strategies to achieve considerable energy-savings.
description: A+BE | Architecture and the Built Environment, No. 19 (2018): Sustainable High-rises
Interface control of electronic transport across the magnetic phase transition in SrRuO_3/SrTiO_3 heterointerface
Creators: name: Roy, S.
name: Autieri, C.
name: Sanyal, B.
name: Banerjee, T.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The emerging material class of complex-oxides, where manipulation of physical properties lead to new functionalities at their heterointerfaces, is expected to open new frontiers in Spintronics. For example, SrRuO_3 is a promising material where external stimuli like strain, temperature and structural distortions control the stability of electronic and magnetic states, across its magnetic phase transition, useful for Spintronics. Despite this, not much has been studied to understand such correlations in SrRuO_3. Here we explore the influence of electron-lattice correlation to electron-transport, at interfaces between SrRuO_3 and Nb:SrTiO_3 across its ferromagnetic transition, using a nanoscale transport probe and first-principles calculations. We find that the geometrical reconstructions at the interface and hence modifications in electronic structures dominate the transmission across its ferromagnetic transition, eventually flipping the charge-transport length-scale in SrRuO_3. This approach can be easily extended to other devices where competing ground states can lead to different functional properties across their heterointerfaces.
description: 12 pages, 5 figures
Traveling Majorana solitons in a one-dimensional spin-orbit coupled Fermi superfluid
Creators: name: Zou, Peng
name: Brand, Joachim
name: Liu, Xia-Ji
name: Hu, Hui
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We investigate traveling solitons of a one-dimensional spin-orbit coupled Fermi superfluid in both topologically trivial and non-trivial regimes by solving the static and time-dependent Bogoliubov-de Gennes equations. We find a critical velocity $v_{h}$ for traveling solitons that is much smaller than the value predicted using the Landau criterion due to the presence of spin-orbit coupling, which strongly upshifts the energy level of the soliton-induced Andreev bound states towards the quasi-particle scattering continuum. Above $v_{h}$, our time-dependent simulations in harmonic traps indicate that traveling solitons decay by radiating sound waves. In the topological phase, we predict the existence of peculiar Majorana solitons, which host two Majorana fermions and feature a phase jump of $π$ across the soliton, irrespective of the velocity of travel. These unusual properties of Majorana solitons may open an alternative way to manipulate Majorana fermions for fault-tolerant topological quantum computations.
description: 5 pages, 5 figures