cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Spin flip scattering at Al surfaces
Creators: name: Poli, N.
name: Urech, M.
name: Korenivski, V.
name: Haviland, D. B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Non-local measurements are performed on a multi terminal device to $in-situ$ determine the spin diffusion length and in combination with resistivity measurements also the spin relaxation time in Al films. By varying the thickness of Al we determine the contribution to spin relaxation from surface scattering. From the temperature dependence of the spin diffusion length it is established that the spin relaxation is impurity dominated at low temperature. A comparison of the spin and momentum relaxation lengths for different thicknesses reveals that the spin flip scattering at the surfaces is weak compared to that within the bulk of the Al films.
description: 11 pages, 5 figures
PERCEIVED QUALITY AS A KEY BRAND EQUITY FACTOR AND ITS IMPACT ON WOMEN'S WASHING MACHINE CHOICES
Creators: name: R. Visalakshi & Dr. R. Tamilselvi
Publisher: name: Zenodo
Year: 2025

description: Perceived quality plays a crucial role in shaping consumer preferences and brand loyalty, especially in durable goods like washing machines. The study examines the role of demographic factors in influencing perceived quality in women's washing machine choices, along with identifying key factors that shape their quality perception. A structured survey was conducted among respondents in Pollachi Taluk, and statistical tools such as Chi-Square analysis, ANOVA, and T-Test were used to analyze the impact of variables like age, education, income, marital status, family type, and decision-making role on perceived quality. The findings reveal that age, education, income, and marital status significantly influence perceived quality, while occupation and family type show no significant impact. Additionally, a Weighted Average Ranking Method was applied to determine the most influential factors affecting perceived quality in washing machine choices. Results indicate that brand reputation, durability, and energy efficiency are the primary determinants, whereas technology and features rank lower in importance. The study highlights the importance of consumer awareness, affordability, and product reliability in shaping purchase decisions. These insights are valuable for marketers and washing machine brands to strategize their product positioning, emphasizing quality, durability, and strong brand reputation to attract women consumers.
Oral health and quality of life in older adults
Creators: name: Guest, Jean Lynn
Publisher: name: University of British Columbia
Year: 2009

description: Previous studies have shown a link between oral health and quality of life in older adults. To further explore this relation the question was asked: How do older adults describe the connection between their oral health and their quality of life? The purpose was to explore the link between oral health and quality of life with a group of older adults. The research utilized a case study method. Thirteen independent living elders, ranging in age from 65 to 80 years, participated in tape-recorded interviews. The interviews were structured and followed an interview guide. Participants were asked to describe, in their own terms, their past and present dental experiences, their oral health, and any impacts oral health had on eating, speaking, socializing and general health. They were also asked for their interpretation of the term quality of life and to describe any connection between oral health and quality of life. Findings propose a model of quality of life in the context of oral health. Findings further suggest that the relationship of oral health and quality of life is influenced by factors such as the ability to cope with existing mouth conditions and an individual's level of satisfaction with their mouth condition. Results add a new perspective that can guide future research into the relationship between oral health and quality of life.
ระบบเทคโนโลยีภูมิสารสนเทศเพื่อการจัดการที่ดินโดยชุมชนและการใช้ประโยชน์ที่ดินในพื้นที่ปลูกพืชเศรษฐกิจ เขตองค์การบริหารส่วนตำบลแม่พูล อำเภอลับแล จังหวัดอุตรดิตถ์
Creators: name: ครรชิต พิระภาค
Publisher: name: Industrial Technology Lampang Rajabhat University
Year: 2015
Subjects: Geo-informatics Technology Systems, Geo-informatics Online, Land management by communities

description: 1, 8, วารสารวิชาการคณะเทคโนโลยีอุตสาหกรรม  มหาวิทยาลัยราชภัฏลำปาง
Origin of Galactic Spurs: New Insight from Radio/X-ray All-sky Maps
Creators: name: Kataoka, Jun
name: Yamamoto, Marino
name: Nakamura, Yuki
name: Ito, Soichiro
name: Sofue, Yoshiaki
name: Inoue, Yoshiyuki
name: Nakamori, Takeshi
name: Totani, Tomonori
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In this study, we analyze giant Galactic spurs seen in both radio and X-ray all-sky maps to reveal their origins. We discuss two types of giant spurs: one is the brightest diffuse emission near the map's center, which is likely to be related to Fermi bubbles (NPSs/SPSs, north/south polar spurs, respectively), and the other is weaker spurs that coincide positionally with local spiral arms in our Galaxy (LAS, local arm spur). Our analysis finds that the X-ray emissions, not only from the NPS but from the SPS are closer to the Galactic center by ~5 deg compared with the corresponding radio emission. Furthermore, larger offsets of 10-20 deg are observed in the LASs; however, they are attributed to different physical origins. Moreover, the temperature of the X-ray emission is kT ~ 0.2 keV for the LAS, which is systematically lower than those of the NPS and SPS (kT ~ 0.3 keV) but consistent with the typical temperature of Galactic halo gas. We argue that the radio/X-ray offset and the slightly higher temperature of the NPS/SPS X-ray gas are due to the shock compression/heating of halo gas during a significant Galactic explosion in the past, whereas the enhanced X-ray emission from the LAS may be due to the weak condensation of halo gas in the arm potential or star formation activity without shock heating.
description: 11 pages, 4 figures, accepted for publication in ApJ
Detecting neutral hydrogen at z > 3 in large spectroscopic surveys of quasars
Creators: name: Fumagalli, Michele
name: Fotopoulou, Sotiria
name: Thomson, Laura
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present a pipeline based on a random forest classifier for the identification of high column-density clouds of neutral hydrogen (i.e. the Lyman limit systems, LLSs) in absorption within large spectroscopic surveys of z>3 quasars. We test the performance of this method on mock quasar spectra that reproduce the expected data quality of the Dark Energy Spectroscopic Instrument (DESI) and the WHT Enhanced Area Velocity Explorer (WEAVE) surveys, finding >90% completeness and purity for N(HI)> 10^17.2 cm^-2 LLSs against quasars of g < 23 mag at z~3.5-3.7. After training and applying our method on 10,000 quasar spectra at z~3.5-4.0 from the Sloan Digital Sky Survey (Data Release 16), we identify ~6600 LLSs with N(HI)>10^17.5 cm^-2 between z~3.1-4.0 with a completeness and purity of >90% for the classification of LLSs. Using this sample, we measure a number of LLSs per unit redshift of 2.32 +/- 0.08 at z=[3.3,3.6]. We also present results on the performance of random forest for the measurement of the LLS redshifts and HI column densities, and for the identification of broad absorption line quasars.
description: 12 pages, 13 figures. MNRAS in press. The classification of the full dataset is available as supplementary data at MNARS online
title: Plamen Dojnovs „Ball der Tyrannen“. Paradoxien des Politischen in der zeitgenössischen bulgarischen Lyrik
title: Plamen Doynov’s “The Tyrants’ Ball”: Paradoxes of the Political in Contemporary Bulgarian Poetry
Creators: name: Schmidt, Henrike
Publisher: name: Trier University
Year: 2023
Subjects: subject: Bulgarian Poetry
subject: New Political Poetry
subject: Engaged Literature
subject: Plamen Doynov
subject: “The Tyrants’ Ball”

description: In 2016, the Bulgarian poet and philologist Plamen Doynov initiated a poetic project called “The New Political Poetry” (NPP). Doynov presented examples of his new political poems at two readings in 2016 and 2019 and published “fragments of a manifesto” in his poetry collection “The Tyrants’ Ball” (2016). The NPP strives to overcome the trauma of politicized ideological writing in the communist era. This article analyzes Doynov’s NPP project against the background of a general tendency towards political engagement in literature that has recently emerged in Bulgaria as well as elsewhere in Europe and beyond. It posits that Doynov’s New Political Poetry, alongside other literary trends in contemporary Bulgaria, paradoxically addresses the political precisely by returning art to heightened cultural autonomy, and rejects the idea of engagement in a narrower sense.
Anomalous Higgs couplings in egamma collision with initial beam and final state polarizations
Creators: name: Sahin, I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the constraints on the anomalous WWH couplings through the process $e^{-}γ\to ν_{e} W^{-} H$. Considering incoming beam polarizations and the longitudinal and transverse polarization states of the final W boson, we find 95% confidence level limits on the anomalous coupling parameters with an integrated luminosity of 500 $fb^{-1}$ and $\sqrt{s}$= 0.5 and 1 TeV energy. We show that initial beam and final state polarizations highly improve the sensitivity limits of the anomalous coupling parameters $b_{W}$ and $β_{W}$.
description: 15 pages, 10 figures, 2 tables
Non-blind catalogue of extragalactic point sources from the Wilkinson Microwave Anisotropy Probe (WMAP) first 3--year survey data
Creators: name: Lopez-Caniego, M.
name: Gonzalez-Nuevo, J.
name: Herranz, D.
name: Massardi, M.
name: Sanz, J. L.
name: De Zotti, G.
name: Toffolatti, L.
name: Argueso, F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have used the MHW2 filter to obtain estimates of the flux densities at the WMAP frequencies of a complete sample of 2491 sources, mostly brighter than 500 mJy at 5 GHz, distributed over the whole sky excluding a strip around the Galactic equator (b < 5 degrees). After having detected 933 sources above the 3 sigma level in the MHW2 filtered maps - our New Extragalactic WMAP Point Source (NEWPS_3sigma) Catalogue - we are left with 381 sources above 5 sigma in at least one WMAP channel, 369 of which constitute our NEWPS_5sigma catalogue. It is remarkable to note that 98 (i.e. 26%) sources detected above 5 sigma are `new', they are not present in the WMAP catalogue. Source fluxes have been corrected for the Eddington bias. Our flux density estimates before such correction are generally in good agreement with the WMAP ones at 23 GHz. At higher frequencies WMAP fluxes tend to be slightly higher than ours, probably because WMAP estimates neglect the deviations of the point spread function from a Gaussian shape. On the whole, above the estimated completeness limit of 1.1 Jy at 23 GHz we detected 43 sources missed by the blind method adopted by the WMAP team. On the other hand, our low-frequency selection threshold left out 25 WMAP sources, only 12 of which, however, are 5 sigma detections and only 3 have fluxes S at 23 GHz > 1.1 Jy. Thus, our approach proved to be competitive with, and complementary to the WMAP one.
description: 18 pages, 6 figures, 5 tables. Accepted for publication in ApJS
title: Continuous monitoring of microplastic abundance in the North Atlantic
Creators: name: Lusher, Amy
name: O’Connor, Ian
name: Officer, Rick
Publisher: name: ASC 2013 - Theme session A
Year: 2024
Subjects: The sea and human culture and societies
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. Pollution levels of marine debris, including microplastics, are largely undocumented in the Atlantic Ocean. A standardised monitoring method is required to understand the distribution and abundance of microplastic pollution. Sampling of the Northeast Atlantic was conducted during research cruises aboard Ireland’s research vessel, the R.V. Celtic Explorer. Transects covering a total of 14,200 km were sampled through continuous monitoring of open ocean surface water resulting in 482 samples. Items classified as potential plastic were identified in 99% of samples. A total of 6,608 particles were identified, 92.5% were less than 5 mm in length therefore classifying them as microplastic. This is the first report of ubiquitous nature of microplastic pollution in the Northeast Atlantic Ocean and highlights the potential for the method to be used as a standardised monitoring protocol.
The Dwarf Novae During Quiescence
Creators: name: Urban, Joel A.
name: Sion, Edward M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a synthetic spectral analysis of nearly the entire FUV IUE archive of spectra of DNe in or near quiescence. We have examined all of the systems for which S/N permitted an analysis. The study includes 53 systems of all DN subtypes both above and below the period gap. The spectra were uniformly analyzed using synthetic spectral codes for optically thick accretion disks and stellar photospheres along with the best-available distance measurements or estimates. We present newly determined approximate WD temperatures or upper limits and estimated accretion rates. The average temperature of WDs in DNe below the period gap is ~18,000K. For WDs in DNe above the period gap, the average WD temperature is ~26,000K. There is a flux component, in addition to a WD photosphere, which contributes >60% of the flux in the FUV in 53% of the quiescent DNe in this study. We find that for 41% of the DNe in our sample, a WD photosphere provides >60% of the FUV flux. Accretion rates estimated from the FUV alone for the sample of DNe during quiescence ranged from 10^-12 Msun/yr to 10^-10 Msun/yr.The additional flux component is almost certainly not an optically thick accretion disk since, according to the disk instability model, the disk should be optically thin and too cool during DN quiescence to be a significant FUV continuum emitter. Among the candidates for the second component of FUV light are the quiescent inner disk, a hot equatorial accretion belt, and a hot rotating ring. The implications of our study for disk accretion physics and CV evolution are discussed.
description: 36 pages, 3 tables, 8 figures, final accepted version of manuscript
Charge mobility of discotic mesophases: A multiscale quantum/classical study
Creators: name: Kirkpatrick, J.
name: Marcon, V.
name: Nelson, J.
name: Kremer, K.
name: Andrienko, D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A correlation is established between the molecular structure and charge mobility of discotic mesophases of hexabenzocoronene derivatives by combining electronic structure calculations, Molecular Dynamics, and kinetic Monte Carlo simulations. It is demonstrated that this multiscale approach can provide an accurate ab-initio description of charge transport in organic materials.
Frenet-Serret analysis of helical Bloch modes in N-fold rotationally symmetric rings of coupled spiralling optical waveguides
Creators: name: Chen, Yang
name: Russell, Philip St. J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The behavior of electromagnetic waves in chirally twisted structures is a topic of enduring interest, dating back at least to the invention in the 1940s of the microwave travelling wave tube amplifier and culminating in contemporary studies of chiral metamaterials, metasurfaces, and photonic crystal fibers (PCFs). Optical fibers with chiral microstructures, drawn from a spinning preform, have many useful properties, exhibiting for example circular birefringence and circular dichroism. It has recently been shown that chiral fibers with N fold rotationally symmetric (symmetry group CN) transverse microstructures support families of helical Bloch modes (HBMs), each of which consists of a superposition of azimuthal Bloch harmonics (or optical vortices). An example is a fiber with N coupled cores arranged in a ring around its central axis (N core single ring fiber). Although this type of fiber can be readily modelled using scalar coupled mode theory, a full description of its optical properties requires a vectorial analysis that takes account of the polarization state of the light particularly important in studies of circular and vortical birefringence. In this paper we develop, using an orthogonal two dimensional helicoidal coordinate system embedded in a cylindrical surface at constant radius, a rigorous vector coupled mode description of the fields using local Frenet Serret frames that rotate and twist with each of the N cores. The analysis places on a firm theoretical footing a previous HBM theory in which a heuristic approach was taken, based on physical intuition of the properties of Bloch waves. We believe this study provides clarity in what can sometimes be a rather difficult field, and will facilitate further exploration of real-world applications of these fascinating waveguiding systems.
description: 20 pages, 10 figures
Modeling protoplanetary disk SEDs with artificial neural networks: Revisiting the viscous disk model and updated disk masses
Creators: name: Ribas, Á.
name: Espaillat, C. C.
name: Macías, E.
name: Sarro, L. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We model the spectral energy distributions (SEDs) of 23 protoplanetary disks in the Taurus-Auriga star-forming region using detailed disk models and a Bayesian approach. This is made possible by combining these models with artificial neural networks to drastically speed up their performance. Such a setup allows us to confront $α$-disk models with observations while accounting for several uncertainties and degeneracies. Our results yield high viscosities and accretion rates for many sources, which is not consistent with recent measurements of low turbulence levels in disks. This inconsistency could imply that viscosity is not the main mechanism for angular momentum transport in disks, and that alternatives such as disk winds play an important role in this process. We also find that our SED-derived disk masses are systematically higher than those obtained solely from (sub)mm fluxes, suggesting that part of the disk emission could still be optically thick at (sub)mm wavelengths. This effect is particularly relevant for disk population studies and alleviates previous observational tensions between the masses of protoplanetary disks and exoplanetary systems.
description: 24 pages (including appendices), 13 figures. Accepted for publication in Astronomy and Astrophysics
Zuhause im Quartier - Die räumliche Gestaltung der Umwelt zwecks Förderung der Ortsverbundenheit
Creators: name: Wyss, Bettina
Publisher: name: Karlsruhe
Year: 2019
Subjects: Ortsverbundenheit
Heimat
Lebensqualität
Quartier
Verdichtung
Stadtplanung
Place Attachment
quality of life
densification
city planning

description: Problemstellung: Weltweit leben immer mehr Menschen in Städten, der Wohnraum wird dichter. Negative Konsequenzen der Verdichtung beeinträchtigen die Lebensqualität. Deshalb ist es notwendig, die Lebensqualität in Städten zu fördern. Ein wichtiger Ansatz dazu ist, Städte so zu planen, dass Ortsverbundenheit ermöglicht; beziehungsweise gefördert wird. Ortsverbundenheit ist die emotionale Bindung von Menschen zu Orten, welche ein Bedürfnis von Menschen darstellt. Aus dem Vorhandensein von Ortsverbundenheit resultiert Lebensqualität. Ziel: Hat man Kenntnisse darüber, zu welchen Orten Menschen ortsverbunden sind, und wieso dies der Fall ist, so hat man die Möglichkeit Städte gezielt so zu planen, dass sie Ortsverbundenheit ermöglichen. Diese Arbeit ist deshalb folgenden Forschungsfragen nachgegangen: • Welche Orte sind für Menschen besonders wichtig? • Wieso sind diese Orte für Menschen besonders wichtig? • Wie wichtig ist das lokale Wohnumfeld für Menschen? Methode: Dazu wurde im Quartier Wipkingen in Zürich eine qualitative Studie durchgeführt. Mit acht Bewohnern des Quartiers, sowie mit acht Personen die im beruflichen Kontext mit dem Quartier zu tun haben, wurden Experteninterviews durchgeführt. Die Interviews wurden anschliessend gemäss der Inhaltsanalyse nach Mayring ausgewertet. Ausserdem wurde ein intensives Literaturstudium betrieben. Die Ergebnisse aus Literaturrecherche und Studie wurden danach anhand, der vom Fotografen und Sozialpädagogen Stefan Dinter im karlsruher Quartier Weststadt durchgeführten Studie «Karlsruhe. Eine Stadt erleben: Fotografien», reflektiert. Schlussfolgerungen: Orte erfüllen für Menschen wichtige Funktionen, dadurch befriedigen sie Bedürfnisse von Menschen, was in erhöhter Lebensqualität resultiert. Resultate: Orte müssen bestimmte Funktionen erfüllen, damit Ortsverbundenheit entsteht. Diese Funktionen sind die in dieser Studie erarbeiteten «sieben Aspekte der Ortsverbundenheit». Dies sind: Infrastrukturorte, soziale Orte, Erinnerungsorte, Erholungsorte, Atmosphäre, Geborgenheit im Raum und Aneignung. Das lokale Wohnumfeld ist dann für Menschen wichtig, wenn möglichst viele der «sieben Aspekte der Ortsverbundenheit» erfüllt werden. Anwendbarkeit und Übertragbarkeit der Ergebnisse: In Planungen sollen die «sieben Aspekte der Ortsverbundenheit» gezielt einbezogen werden, damit so ein Ort entsteht, die Ortsverbundenheit ermöglicht und dadurch die Lebensqualität der Raumnutzer steigert. Die vorliegende Arbeit hat gezeigt, dass die «sieben Aspekte der Ortsverbundenheit» auf verschiedene Räume übertragbar sind.
Repulsive Energies and their Applications
Creators: name: Yu, Christopher
Publisher: name: Carnegie Mellon University
Year: 2022
Subjects: subject: 80103 Computer Graphics
subject: FOS: Computer and information sciences

description: Functionals that penalize bending or stretching of a surface play a key role in geometric and scientific computing, but to date have ignored a very basic requirement: in many situations, shapes must not pass through themselves or each other. This condition is critical, for instance, when shapes represent physical membranes (e.g. in biological simulation), physical products (e.g. in digital manufacturing), or certain mathematical objects (e.g. isotopy classes of embeddings). This thesis develops a numerical framework for the intersection-free optimization of curves and surfaces. The starting point is the tangent-point energy, a “repulsive energy” that effectively pushes apart pairs of points that are close in space but distant along the domain. We develop discretization of this energy for curves and surfaces, and introduce a novel acceleration scheme based on a fractional Sobolev inner product. We further accelerate this scheme via hierarchical approximation, and describe how to incorporate a variety of constraints (lengths, areas, volumes, etc,). Finally, we explore how this machinery might be applied to problems in mathematical visualization, geometric modeling, and geometry processing.
การศึกษาวัสดุปลูกกล้วยไม้จากส่วนผสม ดินเบา กากดินขาว และดินแดงพื้นบ้าน
Creators: name: ศิริมา   เอมวงษ์
Publisher: name: Industrial Technology Lampang Rajabhat University
Year: 2013
Subjects: Orchid planting media, Diatomite, Kaolin tailing, Red local clay

description: 1, 6, วารสารวิชาการคณะเทคโนโลยีอุตสาหกรรม  มหาวิทยาลัยราชภัฏลำปาง
The Past, Present, and Future of African American Literary History
Creators: name: Basseler, Michael
Publisher: name: KULT_online
Year: 2012

description: At a time when the project of literary history is eyed with increasing suspicion, two recent publications expand and complicate discussions of what constitutes the canon of African American literature: With their Cambridge History of African American Literature, Maryemma Graham and Jerry Ward have edited an impressive, comprehensive survey that will no doubt impact further discussions on the development of African American literature in the early 21st century. While its chapters offer a multiperspective view that defies any single narrative to explain 'AfAm Lit', Kenneth Warren, by asking the polemical question of What Was African American Literature?, tells quite a revisionary story: African American literature, Warren claims, was first and foremost a "representational and rhetorical strategy" (p. 9) in response to the social reality of the Jim Crow era, and therefore no longer exists. Particularly in conjunction with each other, these two publications might represent a crucial moment in African American literary studies, as many of the well-established theoretical and ideological frameworks are being renegotiated.
description: KULT_online, Nr. 31 (2012): KULT_online 31 (2012)
Violence Beyond the Categories of Life and Death
Creators: name: Willaert, Thijs
Publisher: name: KULT_online
Year: 2012

description: Debrix and Barder's Beyond Biopolitics constitutes an attempt to comprehend forms of violence that escape the current biopolitical paradigm. In proposing the concept of 'agonal sovereignty,' the authors seek to sketch the contours of a particular formation of power that not only supersedes the questions of life and death, but also actively works to undo the distinction between them by inflicting violence upon the already dead body. Although the book's theoretical approach does not seem attuned to local and historical differences, it raises useful questions about both the potential and the limitations of the concept of biopolitics.
description: KULT_online, Nr. 31 (2012): KULT_online 31 (2012)
Discovering Network Topology in the Presence of Byzantine Faults
Creators: name: Nesterenko, Mikhail
name: Tixeuil, Sébastien
Publisher: name: arXiv
Year: 2006
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Data Structures and Algorithms (cs.DS)
subject: Operating Systems (cs.OS)
subject: FOS: Computer and information sciences

description: We study the problem of Byzantine-robust topology discovery in an arbitrary asynchronous network. We formally state the weak and strong versions of the problem. The weak version requires that either each node discovers the topology of the network or at least one node detects the presence of a faulty node. The strong version requires that each node discovers the topology regardless of faults. We focus on non-cryptographic solutions to these problems. We explore their bounds. We prove that the weak topology discovery problem is solvable only if the connectivity of the network exceeds the number of faults in the system. Similarly, we show that the strong version of the problem is solvable only if the network connectivity is more than twice the number of faults. We present solutions to both versions of the problem. The presented algorithms match the established graph connectivity bounds. The algorithms do not require the individual nodes to know either the diameter or the size of the network. The message complexity of both programs is low polynomial with respect to the network size. We describe how our solutions can be extended to add the property of termination, handle topology changes and perform neighborhood discovery.
Relativistic few-body quantum mechanics
Creators: name: Monahan, Adam Hugh
Publisher: name: University of British Columbia
Year: 2009

description: This thesis develops relativistic quantum mechanical models with a finite number of degrees of freedom and the scattering theories associated with these models. Starting from a consideration of the Poincare Group and its irreducible unitary representations, we develop such representations on Hilbert Spaces of physical states of one, two, and three particles. In the two- and three- particle cases, we consider systems in which the particles are non-interacting and in which the particles experience mutual interactions. We are also careful to ensure that for the three-body system, the formalism predicts that subsystems separated by infinite spatial distances behave independently. We next develop the Faddeev equations, which simplify the solution of multi-channel scattering equations. These are specialised to the three-body system introduced earlier and a series solution of the Faddeev Equations is obtained. A simple mechanical model is introduced to provide a heuristic understanding of this solution. The series solution is also expressed in a diagrammatic form complementary to this mechanical model. A system in which particle production and annihilation are allowed is then introduced by working on an Hilbert Space which is the direct sum of the two- and three-body Hilbert Spaces considered earlier. It is found that in this 2-3 system, as the mass operator and the number operators do not commute, it is not possible for a system to simultaneously have a sharply defined mass and number of particles. The Faddeev Equations for this system are then considered, and a series solution of these equations is developed and discussed. It is also shown that the particle production and annihilation potential has a non-trivial effect on pure two-body and three-body scattering. In the last chapter we consider an attempt to derive from a more elementary field theory, using the dressing transformation, a form for the potential coupling the two- and three-body sectors of the Hilbert Space in the 2-3 system. It is found that this method is inherently ambiguous and is not, therefore, able to provide such information.
Προσφυτική ικανότητα των φυραμάτων τελικής έμφραξης στην οδοντίνη. Σημασία -Μέθοδοι αξιολόγησης -Νεώτερα δεδομένα.:
Creators: name: Μπατά, Ισμήνη Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Προσφυτική ικανότητα φυράματος
Μέθοδοι αξιολόγησης προσφυτικής ικανότητας
Παράγοντες πρόσφυσης
Sealer adhesion
Assessment methods of sealer adhesion
Adhesion parameters

description: Σκοπός της παρούσας εργασίας είναι η βιβλιογραφική ανασκόπηση της πρόσφυσης ενδοδοντικών φυραμάτων στην οδοντίνη, καθώς επίσης και της χρήσης ρητινωδών υλικών εντός των ριζικών σωλήνων. Εν συντομία, εξετάζεται το φαινόμενο της πρόσφυσης, διερευνώνται οι μέθοδοι εργαστηριακής εκτίμησης της πρόσφυσης, καθώς επίσης αναλύονται οι μέθοδοι αξιολόγησης της προσφυτικής ικανότητας των ενδοδοντικών φυραμάτων και οι παράγοντες που συμβάλλουν στην πρόσφυση φυραμάτων. Έπεται η αξιολόγηση της προσφυτικής ικανότητας ενδοδοντικών φυραμάτων με την εκάστοτε μέθοδο, η διερεύνηση των ερευνητικών εργασιών και των αποτελεσμάτων τους, η συζήτηση και τέλος τα συμπεράσματα της μελέτης.
description: The aim of the study was to review the literature regarding of the adhesion of endodontic sealers to dentin and the use of resin materials into the root canal. In short, it focuses on the examination of adhesion, it explores and analyzes available laboratory techniques for testing the adhesion of endodontic sealers, and it presents factors that contribute to the adhesion of sealers. The adhesion of endodontic sealers is also evaluated based on the techniques presented and there is a comparative analysis of the results, a discussion, as well as, the conclusions of the review held.
A generalized Gaeta's Theorem
Creators: name: Gorla, Elisa
Publisher: name: arXiv
Year: 2007
Subjects: subject: Algebraic Geometry (math.AG)
subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 14M06; 14M10; 14M12; 13C40

description: We generalize Gaeta's Theorem to the family of determinantal schemes. In other words, we show that the schemes defined by minors of a fixed size of a matrix with polynomial entries belong to the same G-biliaison class of a complete intersection whenever they have maximal possible codimension, given the size of the matrix and of the minors that define them.
description: 17 pages, submitted
การศึกษาสมบัติทางกายภาพของเถ้าลอยจีโอโพลิเมอร์เพสต์ผสมปูนซีเมนต์ปอร์ตแลนด์
Creators: name: สกลวรรณ ห่านจิตสุวรรณ์ ธนากร ภูเงินขำ และ ปริญญา จินดาประเสริฐ
Publisher: name: Industrial Technology Lampang Rajabhat University
Year: 2013
Subjects: geopolymer, fly ash, ordinary Portland cement, compressive strength, morphology

description: 1, 6, วารสารวิชาการคณะเทคโนโลยีอุตสาหกรรม  มหาวิทยาลัยราชภัฏลำปาง
Organisational issues in the implementation of municipal geographic information systems
Creators: name: Shapira, Daṿid
Publisher: name: University of British Columbia
Year: 2009

description: GIS represents new ways of collecting, storing, managing, analysing and presenting spatial information related to urban planning. Manual procedures that took hours or even days to complete can now be undertaken in often a fraction of the time. As well, GIS offers planners the opportunity to ask questions and investigate spatial phenomena in ways unheard of in the past. Many of the benefits that GIS holds for the planning field have been recognised. These include the ability to query spatial databases and overlay different types of cartographic information. On a broader scale, GIS allows planners to share information, resulting in reduced duplication, waste and redundancy. These are only a few of the advantages that GIS represents for planners. Ironically, the adoption and acceptance of such systems by planning agencies has not always been wholehearted. Because the technological issues behind the operation of GIS are often quite complex, its functions and capabilities are seldom correctly perceived. Many misunderstandings persist among planners and municipal officials about the capabilities of GIS. There are a great many obstacles to the proper implementation and adoption of a municipal GIS. Technical problems can exist throughout the process, but can usually be surmounted given proper equipment and effective technical support. Still, a vast array of managerial and personnel issues have the capacity to affect the success of a GIS implementation scheme: lack of management commitment, ineffective user training, lack of expertise and awareness of GIS capabilities, and an unmotivated staff. The fact that planning processes operate on a level that tends to be less concrete and dichotomous than GIS can also affect its use and acceptance among planners. This thesis examines some of the key issues raised by the obstacles to GIS implementation, and seeks to underscore the critical nature of those obstacles that are organisational in nature. The main findings of this research can be summarised by three categories of critical issues: (1) organisational issues—solving organisational challenges requires a deeper understanding of how the introduction of technological innovations will affect workflow processes, departmental relations and organisational hierarchy; (2) educational issues—end users and managers require a heightened awareness of geography and the true capabilities of GIS in order to use these systems to their fullest potential; (3) political issues—GIS challenges existing organisational structures by empowering those who can operate GISs and allowing them access to a multitude of information.
On Infusing Reachability-Based Safety Assurance within Planning Frameworks for Human-Robot Vehicle Interactions
Creators: name: Leung, Karen
name: Schmerling, Edward
name: Zhang, Mengxuan
name: Chen, Mo
name: Talbot, John
name: Gerdes, J. Christian
name: Pavone, Marco
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Action anticipation, intent prediction, and proactive behavior are all desirable characteristics for autonomous driving policies in interactive scenarios. Paramount, however, is ensuring safety on the road -- a key challenge in doing so is accounting for uncertainty in human driver actions without unduly impacting planner performance. This paper introduces a minimally-interventional safety controller operating within an autonomous vehicle control stack with the role of ensuring collision-free interaction with an externally controlled (e.g., human-driven) counterpart while respecting static obstacles such as a road boundary wall. We leverage reachability analysis to construct a real-time (100Hz) controller that serves the dual role of (i) tracking an input trajectory from a higher-level planning algorithm using model predictive control, and (ii) assuring safety by maintaining the availability of a collision-free escape maneuver as a persistent constraint regardless of whatever future actions the other car takes. A full-scale steer-by-wire platform is used to conduct traffic weaving experiments wherein two cars, initially side-by-side, must swap lanes in a limited amount of time and distance, emulating cars merging onto/off of a highway. We demonstrate that, with our control stack, the autonomous vehicle is able to avoid collision even when the other car defies the planner's expectations and takes dangerous actions, either carelessly or with the intent to collide, and otherwise deviates minimally from the planned trajectory to the extent required to maintain safety.
description: arXiv admin note: text overlap with arXiv:1812.11315
Integrable Lattice Maps: $Q_5$, a Rational Version of $Q_4$
Creators: name: Viallet, Claude
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We give a rational form of a generic two-dimensional "quad" map, containing the so-called $Q_4$ case, but whose coefficients are free. Its integrability is proved using the calculation of algebraic entropy.
Το νομικό πλαίσιο των μεταμοσχεύσεων ιστών και οργάνων βάσει του Ν. 2737/1999.:
Creators: name: Σακελλαρίου, Αικατερίνη Ευτυχίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Μεταμοσχεύσεις
Ιστοί
Όργανα
Transplantations
Tissues
Organs

description: Η παρούσα εργασία πραγματεύεται το νομικό πλαίσιο των μεταμοσχεύσεων ανθρώπινων ιστών και οργάνων σύμφωνα με τον νόμο 2737 του 1999. Αναλύονται οι προϋποθέσεις αφαίρεσης ιστών και οργάνων από ζώντες και νεκρούς δότες. Γίνεται αναφορά στο κριτήριο του εγκεφαλικού θανάτου στη διαδικασία διάγνωσής του και τις ενστάσεις κατά αυτού. Αναλύεται επίσης το ποινικό πλαίσιο των μεταμοσχεύσεων το εμπόριο ανθρώπων οι αιτίες έλλειψης μοσχευμάτων η κριτική κατά του νόμου 2737 του 1999 και οι προτάσεις τροποποίησης του ισχύοντος νόμου. Γίνεται αναφορά επίσης στα ηθικά διλήμματα των μεταμοσχεύσεων και στα κύρια σημεία της κριτικής κατά των μεταμοσχεύσεων. Τέλος γίνεται μνεία σχετικά με θέματα της διοίκησης των μεταμοσχεύσεων στην Ελλάδα και άλλες ευρωπαϊκές χώρες.
description: The present essay treats the legal frame of human organs and tissues transplantations according to the 2737 act of 1999. It is analyzed the tissues and organs removal conditions from living or cadaveric donors. There is reference to the criterion of brain death its diagnostic proceedings and the objections against it. It is also analyzed the transplantations penal frame the human trafficking the causes of grafts deficiency the criticism of 2737 act of 1999 and the proposals for amendment of the current act. There is reference also to the transplantations ethical dilemmas and the criticism’s main points of transplantations. Finishing there is mention of the transplantations administration in Greece and other European countries.
Parity Violating Metric-Affine Gravity Theories
Creators: name: Iosifidis, Damianos
name: Ravera, Lucrezia
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study a parity violating Metric-Affine gravitational theory given by the Einstein-Hilbert action plus the so-called Holst term in vacuum. We find out that for a certain value of the Barbero-Immirzi parameter the total action possesses a remarkable invariance under particular transformations of the affine connection. We prove that in all cases, with appropriate gauge choices, the connection reduces to the Levi-Civita one and that the theory turns out to be equivalent to general relativity in vacuum. Subsequently, we generalize our discussion and analyze the case of Metric-Affine $f(R)$ gravity plus the Holst term. In particular, we show that for $f'(R) \neq \text{constant}$ the theory results to be on-shell equivalent to a metric-compatible torsionless Scalar-Tensor model. Matter coupling of the aforementioned models is also discussed, together with explicit examples and applications.
description: 38 pages
Bericht zur Tagung "Ein goldenes Zeitalter der Stagnation? Perspektiven auf die Brežnev-Zeit, 1964-1982"
Creators: name: Mühlbauer, Julius
Publisher: name: KULT_online
Year: 2012

description: -
description: KULT_online, Nr. 31 (2012): KULT_online 31 (2012)
On the complexity of XPath containment in the presence of disjunction, DTDs, and variables
Creators: name: Neven, Frank
name: Schwentick, Thomas
Publisher: name: arXiv
Year: 2006
Subjects: subject: Databases (cs.DB)
subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: H.2; I.7.2; F.4

description: XPath is a simple language for navigating an XML-tree and returning a set of answer nodes. The focus in this paper is on the complexity of the containment problem for various fragments of XPath. We restrict attention to the most common XPath expressions which navigate along the child and/or descendant axis. In addition to basic expressions using only node tests and simple predicates, we also consider disjunction and variables (ranging over nodes). Further, we investigate the containment problem relative to a given DTD. With respect to variables we study two semantics, (1) the original semantics of XPath, where the values of variables are given by an outer context, and (2) an existential semantics introduced by Deutsch and Tannen, in which the values of variables are existentially quantified. In this framework, we establish an exact classification of the complexity of the containment problem for many XPath fragments.
description: 30 pages, will appear in Logical Methods in Computer Science (http://www.lmcs-online.org)
CARE flow and checklist: Recalcitrant Oral Lichen Planus Involving Bilaterally Buccal Mucosae Treated with A Combination of Photodynamic and Photobiomodulation Therapies: A Case Report
Creators: name: Sattayut, Sajee
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 510202
subject: Lasers and quantum electronics
classificationCode: 320303
subject: Dental therapeutics, pharmacology and toxicology

description: The flow and checklist based on CARE to report the clinical case of Recalcitrant Oral Lichen Planus Involving Bilaterally Buccal Mucosae Treated with A Combination of Photodynamic and Photobiomodulation Therapies
One-to-one correspondence between entanglement mechanics and black hole thermodynamics
Creators: name: Chandran, S. Mahesh
name: Shankaranarayanan, S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We establish a one-to-one mapping between entanglement entropy, energy, and temperature (quantum entanglement mechanics) with black hole entropy, Komar energy, and Hawking temperature, respectively. We show this explicitly for 4-D spherically symmetric asymptotically flat and non-flat space-times with single and multiple horizons. We exploit an inherent scaling symmetry of entanglement entropy and identify scaling transformations that generate an infinite number of systems with the same entanglement entropy, distinguished only by their respective energies and temperatures. We show that this scaling symmetry is present in most well-known systems starting from the two-coupled harmonic oscillator to quantum scalar fields in spherically symmetric space-time. The scaling symmetry allows us to identify the cause of divergence of entanglement entropy to the generation of (near) zero-modes in the systems. We systematically isolate the zero-mode contributions using suitable boundary conditions. We show that the entanglement entropy and energy of quantum scalar field scale differently in space-times with horizons and flat space-time. The relation $E=2TS$, in analogy with the horizon's thermodynamic structure, is also found to be universally satisfied in the entanglement picture. We then show that there exists a one-to-one correspondence leading to the Smarr-formula of black hole thermodynamics for asymptotically flat and non-flat space-times.
description: 24 pages, 10 figures, 2 tables
Theoretical analysis of thermal boundary conductance of MoS2-SiO2 and WS2-SiO2 interface
Creators: name: Ong, Zhun-Yong
name: Cai, Yongqing
name: Zhang, Gang
name: Zhang, Yong-Wei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Understanding the physical processes involved in interfacial heat transfer is critical for the interpretation of thermometric measurements and the optimization of heat dissipation in nanoelectronic devices that are based on transition metal dichalcogenide (TMD) semiconductors. We model the phononic and electronic contributions to the thermal boundary conductance (TBC) variability for the MoS$_{2}$-SiO$_{2}$ and WS$_{2}$-SiO$_{2}$ interface. A phenomenological theory to model diffuse phonon transport at disordered interfaces is introduced and yields $G$=13.5 and 12.4 MW/K/m$^{2}$ at 300 K for the MoS$_{2}$-SiO$_{2}$ and WS$_{2}$-SiO$_{2} $ interface, respectively. We compare its predictions to those of the coherent phonon model and find that the former fits the MoS$_{2}$-SiO$_{2}$ data from experiments and simulations significantly better. Our analysis suggests that heat dissipation at the TMD-SiO$_{2}$ interface is dominated by phonons scattered diffusely by the rough interface although the electronic TBC contribution can be significant even at low electron densities ($n\leq10^{12}$ cm$^{-2}$) and may explain some of the variation in the experimental TBC data from the literature. The physical insights from our study can be useful for the development of thermally aware designs in TMD-based nanoelectronics.
description: 10 pages, 5 figures