cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The bulk expansion of the supernova remnant Cassiopeia A at 151 MHz
Creators: name: Agüeros, Marcel Andre
name: Green, D.A.
Publisher: name: Columbia University
Year: 1999
Subjects: Astronomy

description: We present observations of the supernova remnant Cassiopeia A made over 13 yr at 151 MHz with the Cambridge Low-Frequency Synthesis Telescope. These observations have been used to study the contraction of well-defined minima in the visibility (or u,v) plane, in order to determine the bulk expansion of the radio emission from Cas A. These observations show steady contraction of the first and second minima, corresponding to expansion time-scales of ∼ 400–500 yr. These time-scales are less than those inferred from the expansion of compact radio knots in Cas A, and imply, provided that shape changes are not significant, that the remnant is in the transition between free expansion and Sedov-Taylor phases.
Probing quantum entanglement, quantum discord, classical correlation, and the quantum state without disturbing them
Creators: name: Li, Zhen-ni
name: Jin, Jia-sen
name: Yu, Chang-shui
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, we present schemes for a type of one-parameter bipartite quantum states to probe the quantum entanglement, the quantum discord, the classical correlation and the quantum state based on the cavity QED. It is shown that our detection does not influence all these measured quantities. We also discuss how the spontaneous emission introduced by our probe atom influences our detection.
title: Analysis of the cavitating flow induced by an ultrasonic horn : Numerical 3D simulation for the analysis of vapour structures and the assessment of erosion-sensitive areas
Creators: name: Mottyll, Stephan
name: Müller, Saskia
name: Niederhofer, Philipp
name: Hussong, Jeanette
name: Huth, Stephan
name: Skoda, Romuald
Publisher: name: EDP Sciences
Year: 2014

description: This paper reports the outcome of a numerical study of ultrasonic cavitation using a CFD flow algorithm based on a compressible density-based finite volume method with a low-Machnumber consistent flux function and an explicit time integration [15; 18] in combination with an erosion-detecting flow analysis procedure. The model is validated against erosion data of an ultrasonic horn for different gap widths between the horn tip and a counter sample which has been intensively investigated in previous material studies at the Ruhr University Bochum [23] as well as on first optical in-house flow measurement data which is presented in a companion paper [13]. Flow features such as subharmonic cavitation oscillation frequencies as well as constricted vapour cloud structures can also be observed by the vapour regions predicted in our simulation as well as by the detected collapse event field (collapse detector) [12]. With a statistical analysis of transient wall loads we can determine the erosion sensitive areas qualitatively. Our simulation method can reproduce the influence of the gap width on vapour structure and on location of cavitation erosion.
On the Prolongations of Homogeneous Vector Bundles
Creators: name: Kadioglu, Hulya
Publisher: name: arXiv
Year: 2013
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: Primary 58A05, Secondary 22E60

description: In this paper, we introduce a study of prolongations of homogeneous vector bundles. We give an alternative approach for the prolongation. For a given homogeneous vector bundle E, we obtain a new homogeneous vector bundle. The homogeneous structure and its corresponding representation are derived. The prolongation of induced representation, which is an infinite dimensional linear representation, is also defined.
description: 8 pages
Supplementary document for Preparation and optical properties of Bi3+-doped K4SrGe3O9 as a UVA phosphor - 7147242.pdf
Creators: name: Hosseini, Hossein Ebrahim
name: Cao, JiangKun
name: Ding, Yicong
name: Ghadamyari, Marzieh
name: Galusek, Dusan
name: Klement, R.
name: Wondraczek, Lothar
Publisher: name: Optica Publishing Group
Year: 2024
Subjects: Uncategorized

description: Revised Supplement
FELASA health monitoring related to manuscript 'Phenotypic and clonal stability of antigen-inexperienced memory-like T cells across the genetic background, hygienic status, and aging'
Creators: name: Moudra, Alena
name: Niederlova, Veronika
name: Jiri Novotny
name: Schmiedova, Lucie
name: Kubovciak, Jan
name: Matejkova, Tereza
name: Ales Drobek
name: Pribikova, Michaela
name: Stopkova, Romana
name: Cizkova, Dagmar
name: Ales Neuwirth
name: Michalik, Juraj
name: Krizova, Katerina
name: Hudcovic, Tomas
name: Kolar, Michal
name: Kozakova, Hana
name: Kreisinger, Jakub
name: Stopka, Pavel
name: Stepanek, Ondrej
Publisher: name: Zenodo
Year: 2020
Subjects: FELASA

description: FELASA health monitoring reports related to the manuscript Phenotypic and clonal stability of antigen-inexperienced memory-like T cells across the genetic background, hygienic status, and aging.
CLASH-VLT: Constraints on the Dark Matter Equation of State from Accurate Measurements of Galaxy Cluster Mass Profiles
Creators: name: Sartoris, Barbara
name: Biviano, Andrea
name: Rosati, Piero
name: Borgani, Stefano
name: Umetsu, Keiichi
name: Bartelmann, Matthias
name: Girardi, Marisa
name: Grillo, Claudio
name: Lemze, Doron
name: Zitrin, Adi
name: Balestra, Italo
name: Mercurio, Amata
name: Nonino, Mario
name: Postman, Marc
name: Czakon, Nicole
name: Bradley, Larry
name: Broadhurst, Tom
name: Coe, Dan
name: Medezinski, Elinor
name: Melchior, Peter
name: Meneghetti, Massimo
name: Merten, Julian
name: Annunziatella, Marianna
name: Benitez, Narciso
name: Czoske, Oliver
name: Donahue, Megan
name: Ettori, Stefano
name: Ford, Holland
name: Fritz, Alexander
name: Kelson, Dan
name: Koekemoer, Anton
name: Kuchner, Ulrike
name: Lombardi, Marco
name: Maier, Christian
name: Mou, Leonidas A.
name: Munari, Emiliano
name: Presotto, Valentina
name: Scodeggio, Marco
name: Seitz, Stella
name: Tozzi, Paolo
name: Zheng, Wei
name: Ziegler, Bodo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A pressureless scenario for the Dark Matter (DM) fluid is a widely adopted hypothesis, despite the absence of a direct observational evidence. According to general relativity, the total mass-energy content of a system shapes the gravitational potential well, but different test particles perceive this potential in different ways depending on their properties. Cluster galaxy velocities, being $\ll$c, depend solely on the gravitational potential, whereas photon trajectories reflect the contributions from the gravitational potential plus a relativistic-pressure term that depends on the cluster mass. We exploit this phenomenon to constrain the Equation of State (EoS) parameter of the fluid, primarily DM, contained in galaxy clusters. We use the complementary information provided by the kinematic and lensing mass profiles of the galaxy cluster MACS 1206.2-0847 at $z=0.44$, as obtained in an extensive imaging and spectroscopic campaign within the CLASH survey. The unprecedented high quality of our data-set and the properties of this cluster are well suited to determine the EoS parameter of the cluster fluid. Since baryons contribute at most $15\%$ to the total mass in clusters and their pressure is negligible, the EoS parameter we derive describes the behavior of the DM fluid. We obtain the most stringent constraint on the DM EoS parameter to date, $w=(p_r+2\,p_t)/(3\,c^2ρ)=0.00\pm0.15\mathrm{(stat)}\pm0.08\mathrm{(syst)}$, averaged over the radial range $0.5\,\mathrm{Mpc}\leq$$r$$\leq$$r_{200}$, where $p_r$ and $p_t$ are the radial and tangential pressure, and $ρ$ is the density. We plan to further improve our constraint by applying the same procedure to all clusters from the ongoing CLASH-VLT program.
description: 5 pages, 1 figures, accepted for publication in the Astrophysical Journal Letters
Dust and inclination corrected star-formation and ISM scaling relations in nearby galaxies
Creators: name: Pastrav, Bogdan Adrian
Publisher: name: Zenodo
Year: 2023

description: Following from our recent work, we present here a detailed analysis of dust and star-formation scaling relations,
done on a representative sample of nearby galaxies. H$\alpha$ images are analysed in order to derive the
integrated flux / luminosity for each galaxy, used as a more instantenous and accurate star-formation rate (SFR) tracer,
and the relevant photometric and structural parameters. Dust and inclination corrected H$\alpha$ luminosities
and SFRs are subsequently determined using a method that circumvents the assumption of a dust
attenuation curve and the use of the Balmer decrements or other hydrogen recombination lines in order to estimate
the dust attenuation, which have been shown to be affected by various biases or being inconsistent between different
types of galaxies. We investigate the extent to which dust and inclination effects bias the specific
parameters of these relations, the scatter and degree of correlation between the parameters, and which relations
are fundamental or are just a consequence of others. Most of our results are consistent within errors with other similar
studies. To understand the extent to which star-formation is distributed in the young stellar disks of galaxies we
compare the scalelengths of the B band optical and H$\alpha$ (star-forming) discs. On average, we find the distribution
of star-formation to be more extended than the stellar continuum emission one, this difference increasing with stellar mass.
Similarly, more massive galaxies have a more compact stellar emission surface density than the star-formation one. The
method proposed can be applied in larger scale studies of star-formation and ISM evolution, at low to intermediate redshifts.
description: The recorded talk can be found on Youtube at:
https://www.youtube.com/watch?v=59Xgih408gI
Monitoring the Beaufort Sea coast using very high resolution remote sensing
Creators: name: Vieira, Gonçalo
name: Pina, Pedro
name: Whalen, Dustin
name: Irrgang, Anna
name: Mora, Carla
name: Canário, João
name: Freitas, Pedro
name: Pinheiro, Daniel
Publisher: name: Zenodo
Year: 2020

description: Arctic permafrost coasts are major carbon (Schuur et al., 2015) and mercury pools (Schuster et al., 2018). They represent about 34% of the Earth’s coastline, with long sections affected by high erosion rates (Fritz et al, 2017), increasingly threatening coastal communities. Year-round reduction in Arctic sea ice is forecasted and by the end of the 21st century, models indicate a decrease in sea ice area from 43 to 94% in September and from 8 to 34% in February (IPCC, 2014). An increase of the sea-ice free season leads to a longer exposure of coasts to wave action. Further, climate warming is also expected to modify the contribution of terrestrial erosion (Fritz et al., 2015, Ramage et al., 2018, Irrgang et al., 2018). Within the project EU Horizon2020 project NUNATARYUK, we are updating the mapping of the Arctic coast, with the Canadian Beaufort coast as a case-study. The surveying methodology includes: i. a high resolution update of the coastline mapping and change rates using Pleiades (CNES) satellite acquisitions from 2018, ii. a survey using RTK-UAV aerial imagery of long-term monitoring sites from the Canada-US border to King Point, and iii. the experimental use of TerraSAR-X staring spotlight scenes at key sites to monitor intraseasonal dynamics of cliff edge retreat. This research is funded by the EC H2020 Project NUNATARYUK. Support on remote sensing imagery access by the WMO Polar Space Task Group.
Compact atomic gravimeter based on a pulsed and accelerated optical lattice
Creators: name: Andia, Manuel
name: Jannin, Raphael
name: Nez, François
name: Biraben, François
name: Guellati-Khélifa, Saïda
name: Cladé, Pierre
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a new scheme of compact atomic gravimeter based on atom interferometry. Atoms are maintained against gravity using a sequence of coherent accelerations performed by the Bloch oscillations technique. We demonstrate a sensitivity of 4.8$\times 10^{-8}$ with an integration time of 4 min. Combining this method with an atomic elevator allows to measure the local gravity at different positions in the vacuum chamber. This method can be of relevance to improve the measurement of the Newtonian gravitational constant $G$.
Pure spinor superfields -- an overview
Creators: name: Cederwall, Martin
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Maximally supersymmetric theories do not allow off-shell superspace formulations with traditional superfields containing a finite set of auxiliary fields. It has become clear that off-shell supersymmetric action formulations of such models can be achieved by the introduction of pure spinors. In this talk, an overview of this formalism is given, with emphasis on D=10 super-Yang-Mills theory and D=11 supergravity. This a somewhat expanded version of a talk presented at the workshop "Breaking of supersymmetry and ultraviolet divergences in extended supergravity" (BUDS), Laboratori Nazionali di Frascati, March 25-28, 2013.
description: 34 pp., 2 figs., contributions to the proceedings of the workshop "Breaking of supersymmetry and ultraviolet divergences in extended supergravity" (BUDS), Laboratori Nazionali di Frascati, March 25-28, 2013
Current-induced spin polarization in graphene due to Rashba spin-orbit interaction
Creators: name: Dyrdał, A.
name: Barnaś, J.
name: Dugaev, V. K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Spin polarization induced by an external electric field in graphene is considered theoretically in the linear response regime. The graphene is assumed to be deposited on a substrate which leads to the spin-orbit interaction of Rashba type. The induced spin polarization is shown to be in the graphene plane and perpendicular to the electric field. However, the spin polarization changes sign when the Fermi level, whose position can be controlled by an external gate voltage, crosses the Dirac points.
description: 4 pages, 4 figures
Loan processing system with a custom admin panel
Creators: name: Globaldev
Publisher: name: Zenodo
Year: 2023

description: After decades of offline business, our partner decided to build an online platform where users can easily apply for, monitor, and obtain loans without worrying about their credit score.Seeing the prosperity of the customer platform, our partner also got interested in developing a mobile application. To satisfy new requirements, we created Android and iOS apps that provide the same core functionality as the web platform.We also helped these financial businesses discover their potential: - GoalsSpread awareness of the brandProvide accessibility to customersExpand through online sales- SolutionWeb platform using React, Next.js, and Redux.Apps for iOS and Android, based on the EPIC Loan Systems API using React Native.- OutcomesWe developed a customer portal where users can easily apply for and monitor loans. The platform allows a customer to provide relevant information using a five-step form. Based on this information as well as data from various financial databases, the system then automatically determines loan eligibility.For the platform's managers, we integrated an admin panel that displays information about log collection and errors. With the help of the admin panel, managers can also handle user applications and see the time spent filling out application forms.- OutcomesThe application offers a user-friendly process for applying for a loan, communicating with the customer support team, and monitoring repayment.Integration with financial databases allows the system to process users' loans and automate the document flow.Sounds interesting? Then this awesome case study about Loan processing system with a custom admin panel is definitely for you!
Supplementary document for Preparation and optical properties of Bi3+-doped K4SrGe3O9 as a UVA phosphor - 7175326.pdf
Creators: name: Hosseini, Hossein Ebrahim
name: Cao, JiangKun
name: Ding, Yicong
name: Ghadamyari, Marzieh
name: Galusek, Dusan
name: Klement, R.
name: Wondraczek, Lothar
Publisher: name: Optica Publishing Group
Year: 2024
Subjects: Uncategorized

description: Clean Copy Supplement
H_2 Suppression with Shocking Inflows: Testing a Pathway for Supermassive Black Hole Formation
Creators: name: Fernandez, Ricardo
name: Bryan, Greg L.
name: Haiman, Zoltan
name: Li, Miao
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The presence of quasars at redshifts z > 6 indicates the existence of supermassive black holes (SMBHs) as massive as a few times 10^9 Msun, challenging models for SMBH formation. One pathway is through the direct collapse of gas in T_{vir} > 10^4 K halos; however, this requires the suppression of H_2 cooling to prevent fragmentation. In this paper, we examine a proposed new mechanism for this suppression which relies on cold-mode accretion flows leading to shocks at high densities (n > 10^4 cm^{-3}) and temperatures (T > 10^4 K). In such gas, H_2 is efficiently collisionally dissociated. We use high-resolution numerical simulations to test this idea, demonstrating that such halos typically have lower temperature progenitors, in which cooling is efficient. Those halos do show filamentary flows; however, the gas shocks at or near the virial radius (at low densities), thus preventing the proposed collisional mechanism from operating. We do find that, if we artificially suppress H_2 formation with a high UV background, so as to allow gas in the halo center to enter the high-temperature, high-density "zone of no return", it will remain there even if the UV flux is turned off, collapsing to high density at high temperature. Due to computational limitations, we simulated only three halos. However, we demonstrate, using Monte Carlo calculations of 10^6 halo merger histories, that a few rare halos could assemble rapidly enough to avoid efficient H_2 cooling in all of their progenitor halos, provided that the UV background exceeds J_{21} ~ few at redshifts as high as z ~ 20.
description: 12 pages, 8 figures, submitted to MNRAS (after making referee's changes)
Borane-functionalized polyolefins for catalysis and materials application
Creators: name: Lin, Huina
Publisher: name: No Publisher Supplied
Year: 2020

description: Boron-containing polymers have received tremendous attention over the past decades due to the diverse potential applications, including their use as polymer-supported catalysts, in drug delivery, optoelectronic materials, and sensors for anions. The ability of the empty pB-orbital in tri-coordinate boranes to delocalize π–electrons and to form Lewis acid-base complexes is widely applied in Lewis acid catalysis, supramolecular assembly, and the development of luminescent materials. Here we focus on the incorporation of tri-coordinate borane moieties into the side chains of polystyrene (PS) and its derivatives for catalysis applications. An alternative strategy to incorporate boron into polymeric systems is the replacement of a C-C unit for an isosteric B-N unit. Nowadays, the study of carbon-boron-nitrogen (CBN) heterocycles has become one of the most popular topics in organic and materials chemistry. Numerous BN-embedded aromatic compounds have been synthesized. Thus, in a second direction of this thesis, we targeted new azaborine-substituted polymers, with the goal of expanding the diversity and functionality of polystyrene via BN for CC substitution.We designed a new class of polymers that feature bulkier groups in the ortho-position to boron to stabilize the borane moiety. The attachment of the tailored triarylborane moieties to the polyolefin backbone provides access to new polymer-supported Lewis acids with improved stability and recyclability that we applied in the catalytic hydrosilylation of unsaturated organic substrates. In addition, we discovered that both the model compounds and copolymers are strongly luminescent, and display thermally activated delayed fluorescence (TADF), a phenomenon that is attracting much current interest. To expand the diversity and functionality of polystyrenes via BN for CC substitution, we successfully prepared a series of new isomeric azaborine-substituted polymers with high molecular weights via standard free-radical polymerization. Furthermore, we investigated the effects of the position of the vinyl group relative to the BN moiety on the polymerization reactivity and physical properties of the respective polymers. The results revealed that the reactivity and physical properties strongly depends on the substitution pattern. Lastly, the ring opening metathesis polymerization of BN Dewar isomers was accomplished with Grubbs 2nd generation catalyst. The synthesized polymer features four-membered BN-heterocycles alternating with vinylene groups in the main chain.
Supplementary document for Preparation and optical properties of Bi³+-doped K₄SrGe₃O₉ as a UVA phosphor - 7046952.pdf
Creators: name: Hosseini, Hossein Ebrahim
name: Cao, JiangKun
name: Ding, Yicong
name: Ghadamyari, Marzieh
name: Galusek, Dusan
name: Klement, R.
name: Wondraczek, Lothar
Publisher: name: Optica Publishing Group
Year: 2024
Subjects: Uncategorized

description: Additional figures, data not included in manuscript itselfs
Data and analytics engineers for Gentrack Logical Data Model
Creators: name: Globaldev
Publisher: name: Zenodo
Year: 2023

description: The energy and utilities industry is facing several challenges as it moves towards sustainability, like legacy infrastructure, more complex processes, pressure from consumers and government, and data interpreting issues. Out of all those challenges, legacy infrastructure and issues with data gathering are the hardest ones to overcome. Assets are aging rapidly and are often insubstantial to meet the needs of a changing industry. The process of updating crucial energy infrastructure with more efficient, digital-ready parts can't be achieved overnight. And with digital transformation in place, sometimes companies end up drowning in too much data from too many assets. It isn't easy to know which data to focus on and what it tells us.To solve these problems, energy & utilities companies need to use new technology, come up with new business models, and, most importantly, get help from experts who can guide them through the whole process. One of the leading tech companies in New Zealand, Gentrack, made it their goal to simplify the sustainability journey for energy & utilities companies.With Globaldev's experts, they were able to design and develop a completely new data and analytics layer, Gentrack Logical Data Model, to process a wealth of data. GLDM acts as a single source of data, gives a complete overview of the customer, can generate reports and analytics quickly, and allows the implementation of AI/ML use cases on top of 100s of predefined utility-centric KPIs. To accomplish this, Gentrack leveraged Globaldev's BI and D&A specialists that were integrated into the in-house team. Read more
title: Emissionsoptimierung am hybriden Sattelzug mittels Most Relevant Testing
Creators: name: Hummel, Nicolas
name: Thiem, Mikula
name: Steinhaus, Tim
name: Beidl, Christian
Publisher: name: UNSPECIFIED
Year: 2021

description: In Vergangenheit wurde am VKM eine Methode zur Identifikation emissionsrelevanter Betriebsphasen entwickelt, die in ihrer Anwendung bisher vornehmlich auf den Einsatz in Personenkraftwagen unter Real-Driving-Emissions (RDE) Bedingungen beschränkt war. Das parallel entwickelte Projekt evTrailer hybridisiert Nutzfahrzeuge, indem der Trailer als elektrifizierte Komponente dient und damit eine hohe Variabilität der darstellbaren Betriebszustände des konventionellen Dieselaggregates der Zugmaschine erlaubt. Dieser Freiheitsgrad wird in dem vorgestellten Beitrag genutzt, um die mithilfe der Most-Relevant-Methode identifizierten Betriebsphasen zu verschieben. Am Truck-in-the-Loop Prüfstand werden damit die entstehenden Emissionen unter Realbedingungen möglichst effizient reduziert. Mit fortschreitender Entwicklung der Abgasapplikation auf Basis von realfahrtbezogenen Emissionsgrenzwerten wird zunehmend deutlich, dass ein emissionsminimaler Betrieb von Verbrennungsmotoren unter betriebswarmen Bedingungen technisch lösbar ist. Besonders relevant für die Gesamtemission ist damit das Erreichen und das Beibehalten jener betriebswarmen Bedingungen durch ein entsprechendes Thermomanagement. Dies gilt insbesondere für hybridisierte Antriebstränge. Deren gesteigerte Flexibilität in Punkto Betriebsweise führt allerdings zu deutlichen Aufwandssteigerungen bei der Applikation. Der zusätzlich vorgestellte Co-Simulations-Workflow beschreibt eine Herangehensweise, durch deren Einsatz den neuen Herausforderungen durch Modularität, Konsistenz und Echtzeitfähigkeit effizient begegnet werden kann. Kennzeichnendes Merkmal ist dabei die flexible Austauschbarkeit von virtuellen und realen Werkzeugen.
Transmission channels for light in absorbing random media: from diffusive to ballistic-like transport
Creators: name: Liew, Seng Fatt
name: Popoff, Sebastien M.
name: Mosk, Allard P.
name: Vos, Willem L.
name: Cao, Hui
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: While the absorption of light is ubiquitous in nature and in applications, the question remains how absorption modifies the transmission channels in random media. We present a numerical study on the effects of optical absorption on the maximal transmission and minimal reflection channels in a two-dimensional disordered waveguide. In the weak absorption regime, where the system length is less than the diffusive absorption length, the maximal transmission channel is dominated by diffusive transport and it is equivalent to the minimal reflection channel. Its frequency bandwidth is determined by the underlying quasimode width. However, when the absorption is strong, light transport in the maximal transmission channel undergoes a sharp transition and becomes ballistic-like transport. Its frequency bandwidth increases with absorption, and the exact scaling varies with the sample's realization. The minimal reflection channel becomes different from the maximal transmission channel and becomes dominated by absorption. Counterintuitively, we observe in some samples that the minimum reflection eigenvalue increases with absorption. Our results show that strong absorption turns open channels in random media from diffusive to ballistic-like.
description: 11 pages, 7 figures
Monte Carlo simulation of light scattering in the atmosphere and effect of atmospheric aerosols on the point spread function
Creators: name: Colombi, J.
name: Louedec, K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: We present a Monte Carlo simulation for the scattering of light in the case of an isotropic light source. The scattering phase functions are studied particularly in detail to understand how they can affect the multiple light scattering in the atmosphere. We show that although aerosols are usually in lower density than molecules in the atmosphere, they can have a non-negligible effect on the atmospheric point spread function. This effect is especially expected for ground-based detectors when large aerosols are present in the atmosphere.
description: 10 pages, 7 figures, journal paper, accepted in J. Opt. Soc. Am. A
Boosting the metropolis
Creators: name: Bauer, Matthew A.
Publisher: name: No Publisher Supplied
Year: 2012

description: Focusing on post-9/11 New York City as a case study, the central hypothesis of this dissertation is that cities affected by a terrorist action utilize, at least temporarily, the actors of their respective tourism-related industries to reaffirm the emotional affiliation that their residents and business leaders have with their affected city, and to instill a sense of confidence that re-investing in the city is a wise economic and personal choice. Building upon the growth machine thesis of Logan and Molotch (1987), and expanding upon the research of Greenberg (2008a) and Gladstone and Fainstein (2001), this dissertation confirms that at least in the case of post 9/11 New York, the tourism-led growth coalition was employed to boost the morale and sense of connectedness to New York for those already residing and conducting business in the city. During the height of the tourism-led growth coalition’s influence, the city’s real estate industry focused its energies on securing public funding for physical redevelopment and residential & office tenancy incentive programs that were less in the public eye than were the tourism-led growth coalition’s efforts. The city’s bid to secure the 2012 Olympic Games and its efforts to extend the Midtown Central Business District to include the West Side rail yards area placed New York’s real estate interests back in the forefront of public discourse about growth. While its hegemony in leading city growth may have been fleeting, the tourism-led coalition acted swiftly and purposefully to serve as a salve against a pervasive sense of fear and instability caused by the rapid succession of terrorist attacks on New York, first on the World Trade Center and then by Anthrax-tainted letters. Through its actions, the tourism-led growth coalition helped stem the potential tide of businesses and residents leaving New York for more safe and secure locales.
Superconducting Spintronics with Magnetic Domain Walls
Creators: name: Linder, Jacob
name: Halterman, Klaus
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The recent experimental demonstration of spin-polarized supercurrents offer a venue for establishment of a superconducting analogue to conventional spintronics. Whereas domain wall motion in purely magnetic structures is a well-studied topic, it is not clear how domain wall dynamics may influence superconductivity and if some functional property can be harnessed from such a scenario. Here, we demonstrate that domain wall motion in superconducting systems offers a unique way of controlling the quantum state of the superconductor. Considering both the diffusive and ballistic limits, we show that moving the domain wall to different locations in a Josephson junction will change the quantum ground state from being in a 0 state to a $π$ state. Remarkably, we also show that domain wall motion can be used to turn on and off superconductivity: the position of the domain wall determines the critical temperature $T_c$ and thus if the system is in a resistive state or not, causing even a quantum phase transition between the dissipationless and normal state at $T=0$. In this way, one achieves dynamical control over the superconducting state within a single sample by utilizing magnetic domain wall motion.
Diasporic childhoods: reimagining Africa in 21st century literature
Creators: name: Lombardi, Bernard
Publisher: name: No Publisher Supplied
Year: 2020

description: Diasporic Childhoods examines representations of queer diasporic childhood in twenty-first century transnational African literature—novels, short stories, and memoir—for how they offer ways to reimagine citizenship and belonging for queer Africans that transform historically-accepted interpretations of Africanity in American, African, and African diaspora discourses. It is primarily concerned with how representations of diasporic childhood lead to reimaginings of African continental space in ways that both challenge heteropatriarchal nationalism as it defines postcolonial societies and subvert Western interpretations of Africa as the anti-modern. Their writing reflects a commitment to using the various spaces they occupy and their concurrent migratory experiences to flesh out these reimaginings and to repositioning Africa, diaspora, and queerness in mutual positive relation. A consequence of this transnational framework is that it simultaneously incites new ways of interpreting America and the West within the scope of both domestic and global socio-cultural politics. The writers studied include Uzodinma Iweala, Chimamanda Ngozi Adichie, and Chinelo Okparanta, who all work between Nigeria and the United States, as well as Somali-born Diriye Osman, who spent his childhood in Kenya and now resides in England, and the late Kenyan Binyavanga Wainaina, whose work carries us throughout sub-Saharan Africa and the United States.In each text analyzed, the presence of queer children, and their varying marginalized experiences, reveals the socio-sexual limits of national identity (and its circulations transnationally) as manifested in the diegetic worlds in which they exist. The extents by which representations of queer childhood disrupt these narratives and/or orient the reader towards possibilities outside a narrative’s dominant socio-historical framework, albeit mostly unknown, exemplify an excavation of queer space as an aesthetic methodology in literary studies. By highlighting the imbrications of form, theory, and social practice in literary production and analysis, Diasporic Childhoods presents childhood as a marker of queer space and as an aesthetic device that overlaps with cultural and political investments in queer diaspora as a collective consciousness oriented towards the future and beyond racialized and sexualized forms of oppression.
IMPETUS D7.1 Data Management Plan
Creators: name: Thuermer, Gefion
Publisher: name: Zenodo
Year: 2023
Subjects: Data Management

description: IMPETUS is a Horizon Europe project which aims to enable and support citizen science initiatives. As part of that process, IMPETUS provides funding for citizen science initiatives through an open call. In this document, we set out a summary of the first open call, which ran from 10th January to 13th March 2023, with successful applicants joining the IMPETUS accelerator in June 2023.This document outlines the collection and use of data in the project, as of M12 (July 2023).
title: Methodikbaukasten zur effizienten, zielgerichteten RDE-Entwicklung – Potenziale und Perspektiven
Creators: name: Hipp, Johannes
name: Schmidt, D.
name: Bauer, S.
name: Steinhaus, Tim
name: Beidl, Christian
Publisher: name: UNSPECIFIED
Year: 2019

description: Die Umsetzung der aktuellen Emissionsgesetzgebung führt zu einem Paradigmenwechsel in der Entwicklung von Verbrennungsmotoren. Neben einer neuen Prüfprozedur (WLTP) inklusive neuem Prüfzyklus (WLTC) wurde zum 01. September 2017 auch die Typprüfung unter Berücksichtigung der Emissionen im realen Straßenverkehr (RDE) verpflichtend. Damit erfolgt die Homologation nicht länger mittels synthetischer Prüfprozeduren unter kontrollierten Randbedingungen.
On the Theory of Wave Packets
Creators: name: Naumov, D. V.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper we discuss some aspects of the theory of wave packets. We consider a popular non-covariant Gaussian model used in various applications and show that it predicts too slow a longitudinal dispersion rate for relativistic particles. We revise this approach by considering a covariant model of Gaussian wave packets, and examine our results by inspecting a wave packet of arbitrary form. A general formula for the time dependence of the dispersion of a wave packet of arbitrary form is found. Finally, we give a transparent interpretation of the disappearance of the wave function over time due to the dispersion --- a feature often considered undesirable, but which is unavoidable for wave packets. We find, starting from simple examples, proceeding with their generalizations and finally by considering the continuity equation, that the integral over time of both the flux and probability densities are asymptotically proportional to the factor 1/L^2 in the rest frame of the wave packet, just as in the case of an ensemble of classical particles.
description: Accepted to PEPAN Letters
Staff augmentation for P2P investment platform
Creators: name: Globaldev
Publisher: name: Zenodo
Year: 2023

description: Peer to Peer lending platforms offers advantages and disadvantages to both borrowers and investors.For borrowers, P2P lending can be a convenient and potentially faster way to secure a loan, as the application process is often streamlined and decisions can be made more quickly than with traditional lenders.In addition, P2P loans may have lower interest rates than those offered by banks or other financial institutions, making them more affordable for borrowers. For investors, P2P lending can provide an opportunity to earn higher returns on their investments than they might receive through traditional savings or investment options.Let's take a closer look at Tarya.Tarya is an Israeli company that leverages fintech technology.Tarya operates an advanced technology platform that brings borrowers and lenders together without the banks in the middle. Tarya develops innovative solutions that enable customers to fully utilize their financial abilities and control their financial future. P2P investments (social loans) and consumer loans that do not tap out the individual's credit facility and mortgages.Tarya is a pioneer and a leader in the oversight and regulation revolution in the P2P loan market. Tarya's activity has been regulated by the Israel Capital Market, Insurance and Savings Authority since February 2018. In June 2021, it received a license from the Capital Market Authority.Sounds interesting and want to know more about building your own P2P investment platform? Learn more
Evolutionary genetic optimization of the injector beam dynamics for the ERL test facility at IHEP
Creators: name: Yi, Jiao
Publisher: name: arXiv
Year: 2013
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: The energy recovery linac test facility (ERL-TF), a compact ERL-FEL (free electron laser) two-purpose machine, was proposed at the Institute of High Energy Physics, Beijing. As one important component of the ERL-TF, the photo-injector started with a photocathode direct-current gun was designed and preliminarily optimized. In this paper an evolutionary genetic method, non-dominated sorting genetic algorithm II, is applied to optimize the injector beam dynamics, especially in the high-charge operation mode. Study shows that using an incident laser with rms transverse size of 1~1.2 mm, the normalized emittance of the electron beam can be kept below 1 mm.mrad at the end of the injector. This work, together with the previous optimization for the low-charge operation mode by using the iterative scan method, provides guidance and confidence for future constructing and commissioning of the ERL-TF injector.
description: 9 pages, 10 figures, submitted to Chinese Physics C
Analyzing cardiac medical device failures with a machine learning approach
Creators: name: Baltes, Angela
Publisher: name: No Publisher Supplied
Year: 2020

description: Background: Cardiovascular disease is a prominent burden on modern day society. A wide variety of medical devices have been necessary in the treatment and therapy of disease that affect the cardiovascular system. Despite the ubiquitous nature of these devices, limited research exists regarding patient safety and device failure. The US Food and Drug Administration collects medical device data but the problem codes assigned to events as well as data integrity are problematic means of understanding the device failures and patient outcomes.Methods: Supervised machine learning and data filtering methods were used to create tags and identify cardiac medical device failures that were related to: migration, extrusion and expulsion between 1997 and 2017. The results were then used to analyze patient outcomes.Results: Approximately 20% to 21% of cardiac devices were identified from the base dataset, and of that .69% pertained to migrations, extrusions and expulsions. When evaluating results of cardiac and non-cardiac devices, injury was the most frequently occurring adverse outcome of the three failures. Death was an uncommon outcome in cardiac and non-cardiac failures, resulting in low percentages. Statistical significance between cardiac and non-cardiac injury was found. The problem codes associated with records as well as names for devices were unreliable within the realm of this research.Conclusions: Cardiac medical devices account for approximately 20% to 21% of overall medical device events reported to the FDA each year. The risk of injury for medical device failures are high, and data would be more useful for research if accessible and accurate.
PRE & POST MERGER & ACQUISITIONS (M&A) PERFORMANCE OF SELECTED COMPANIES
Creators: name: DEEP HIMMATBHAI AJABANI
Publisher: name: Zenodo
Year: 2023
Subjects: Merger, Acquisition, Amalgamation, Pre, Post, IT Industries, Performance, Statistics Ratios.

description: Abstract
This study is mainly focus on pre and post-merger and acquisition of companies and their performance before five years of M&A and after five years of the M&A. this will helpful to entrepreneur to take decision in future that what kind of thing to be done first for M&A process of their companies or businesses. The Problem Area: In present scenario many merger and takeover took places specially in IT companies. To provide them authentic/ statistical information about positive or negative changes in market this study is important. It is very hard for all the stake holder to judge the co. performance from all angle. And statistics give us spectra analysis.  Research Gap:  This type of study till date not done by anyone in the area of pre and post-merger performance of various selected co Significances of the Study: To know the co. performance is as same as before merger and after merger or any kind of positive or negative changes happened statically.  Objectives of the Study: To know the pre and post-merger performance of selected co. on the bases of authentic data collection and suitable statistical analysis of ten years. Sample Design: 15 companies taken for study purpose by using convenient sample methods in descriptive type of research design. Special five years' performance before merger and five years' performance after merger.  Usefulness: Students, research scholars, and other stake holders also get right information and benefits through this paper.
A type of localized quadripartite entanglement
Creators: name: Wu, Shao-xiong
name: Yu, Chang-shui
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, we show that the average three-tangle of the reduced tripartite density matrix for some quadripartite pure states can be increased by some potential measurements on the fourth subsystem, which means this type of quadripartite entanglement can be localized. In particular, we prove that the maximal increment with all potential measurements taken into account is a quadripartite entanglement monotone, so it quantifies this localized quadripartite entanglement. By analyzing quadripartite pure states based on the previous classification, we find that this quadripartite entanglement monotone is not only present in the standard GHZ state and absent in the standard W states. In addition, based on the proposed entanglement measure, we construct a new monogamy relation.
description: 5 pages. (A tough version before publication)
Diesel exhaust exposure and mortality among males in the American Cancer Society prospective study
Creators: name: Boffetta, Paolo
name: Stellman, Steven D.
name: Garfinkel, Lawrence
Publisher: name: Columbia University
Year: 1988
Subjects: Epidemiology
Public health

description: In 1982, the American Cancer Society enrolled over 1.2 million American men and women in a prospective mortality study of cancer and other causes in relation to different risk factors. The 2-year mortality of 461,981 males aged 40-79 years with known smoking habit has been analyzed in relation to exposure to diesel exhaust (DE) and to employment in selected occupations related to DE exposure. The relative risk (RR) for all causes of death for those exposed was 1.05 (95% confidence interval [CI]: 0.97-1.13). For lung cancer, the RR was 1.18 (95% CI: 0.97-1.44). A dose-response effect was present. Railroad workers, heavy equipment operators, miners, and truck drivers had a higher mortality both for all causes and for lung cancer when compared with subjects with other occupations and no exposure to DE. Truck drivers exposed to DE were not at excess risk of lung cancer if compared with truck drivers unexposed to DE, but a trend of increasing risk with duration of exposure was suggested. DE exposure was also associated with increase in mortality for accidents, cerebrovascular disease, arteriosclerosis, and cirrhosis of the liver. An association based on small numbers was also present for Hodgkin’s disease and lymphoid leukemia. No association with chronic non-neoplastic pulmonary diseases or with bladder cancer was found.
Dictators without Borders
Creators: name: Heathershaw, John
name: Cooley, Alexander A.
Publisher: name: Columbia University
Year: 2014
Subjects: subject: Political science
subject: FOS: Political science
subject: Asians
subject: International relations

description: Central Asian dictators close down the space for domestic political opposition. But politics is still present, only it has moved offshore, out of the region.
КИЧИК БИЗНЕС ВА ХУСУСИЙ ТАДБИРКОРЛИКНИНГ МАМЛАКАТ ИҚТИСОДИЁТДАГИ ТУТГАН ЎРНИ
Creators: name: Душабоев, Миржалол
Publisher: name: Zenodo
Year: 2023

description: Мамлакатимизда амалга оширилаётган иқтисодий ислоҳотларнинг ҳозирги босқичи кичик бизнес ва хусусий тадбиркорликни ривожлантириш, унга кенг иқтисодий эркинлик бериш билан самарадорлигини оширишни такомиллаштиришни тақозо этмоқда. Бу мақсадга эришиш учун мамлакатимиз раҳбари томонидан бир қанча фармон ва қарорларнинг ишлаб чиқилиши кичик бизнес ва хусусий тадбиркорликни самарадорлини оширишга албатта хизмат қилади.
Semiotic Practice and Internet Freedom Discourse
Creators: name: Carrasco, William J.
Publisher: name: Columbia University
Year: 2012
Subjects: Communication
Internet

description: This paper delineates some of the dominant thematics and enunciative structures that characterize semiotic situations that emerge when internet freedom is at stake. Given the vast extension and complexity of signifying systems and utterances that are put into play, our initial goal is to understand how a resolution of these heterogeneities is achieved. By examining a selection of internet practices that articulate the theme of internet freedom, we will demonstrate how the different semiotic planes of immanence (i.e., signs, text-utterances, objects, practices, strategies, forms of life) are integrated. Our primary focus is on the level of semiotic practices, and how its integration with other levels of pertinence can contribute to defining internet freedom discourse within the framework of a Semiotics of Culture.