cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Monopole-Antimonopole Pair Dyons
Creators: name: Lim, Kok-Geng
name: Teh, Rosy
name: Wong, Khai-Ming
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Monopole-antimonopole pair (MAP) with both electric and magnetic charges are presented. The MAP possess opposite magnetic charges but they carry the same electric charges. These stationary MAP dyon solutions possess finite energy but they do not satisfy the first order Bogomol'nyi equations and are not BPS solutions. They are axially symmetric solutions and are characterized by a parameter, $-1\leqη\leq 1$ which determines the net electric charges of these MAP dyons. These dyon solutions are solved numerically when the magnetic charges of the dipoles are $n=\pm 1, \pm 2$ and when the strength of the Higgs field potential $λ=0, 1$. When $λ=0$, the time component of the gauge field potential is parallel to the Higgs field in isospin space and the MAP separation distance, total energy and net electric charge increase exponentially fast to infinity when $η$ approaches $\pm 1$. However when $λ=1$, all these three quantities approach a finite critical value as $η$ approaches $\pm 1$.
description: 20 pages, 9 figures, 2 tables
A time-dependent Poisson random field model for polymorphism within and between two related biological species
Creators: name: Amei, Amei
name: Sawyer, Stanley
Publisher: name: arXiv
Year: 2010
Subjects: subject: Probability (math.PR)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Mathematics
subject: FOS: Biological sciences

description: We derive a Poisson random field model for population site polymorphisms differences within and between two species that share a relatively recent common ancestor. The model can be either equilibrium or time inhomogeneous. We first consider a random field of Markov chains that describes the fate of a set of individual mutations. This field is approximated by a Poisson random field from which we can make inferences about the amounts of mutation and selection that have occurred in the history of observed aligned DNA sequences.
description: Published in at http://dx.doi.org/10.1214/09-AAP668 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Young children’s preferences of the elements available to them in their outdoor play space
Creators: name: Donison, Laurel
Publisher: name: University of British Columbia
Year: 2018

description: Abstract Outdoor play spaces within child care centers are important because of the many opportunities they provide for children’s over all development. Outdoor play has many benefits for different areas of children’s development and is an important part of quality early childhood programs. The spaces that are provided for children impact their learning experiences. Previous research identifies the importance of outdoor play on children’s development. Much of the research done on outdoor play includes adult’s perspectives and observations. Since children are the main users of these outdoor play spaces in early years settings it is essential that their perspectives are taken into consideration. The purpose of this study was to explore children’s perspectives of the elements of the outdoor play space available to them. A child care center in Vancouver BC with a mixed zone outdoor play space was selected for this study. Four children ages 36 months to 48 months enrolled full time at this center participated in the study. The qualitative case study methodology was used to identify what elements of the outdoor play space were important to the children. Data was collected in the form of photographs taken by the children of the outdoor play space, conversational interviews using the photographs as prompts and the researchers field notes. Thematic analysis was used to discover themes emerging from the data of the elements children identified to be important in the outdoor play space. The findings revealed 4 different elements within the outdoor play space that were important to the children, the natural environment, built environment, play materials and missing features/elements. This study gave the children the opportunity to share their ideas and opinions concerning the elements available to them in their outdoor play space at the child care center. The data gathering methods supported children’s rights by giving them an active voice to share information and express their opinions. The children in this study were capable of identifying features/elements within the play space that were important to them.
Elementary excitations in homogeneous superfluid neutron star matter: Role of the proton component
Creators: name: Baldo, Marcello
name: Ducoin, Camille
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The thermal evolution of neuron stars depends on the elementary excitations affecting the stellar matter. In particular, the low-energy excitations, whose energy is proportional to the transfered momentum, can play a major role in the emission and propagation of neutrinos. In this paper, we focus on the density modes associated with the proton component in the homogeneous matter of the outer core of neutron stars (at density between one and three times the nuclear saturation density, where the baryonic constituants are expected to be neutrons and protons). In this region, it is predicted that the protons are superconductor. We study the respective roles of the proton pairing and Coulomb interaction in determining the properties of the modes associated with the proton component. This study is performed in the framework of the Random Phase Approximation, generalized in order to describe the response of a superfluid system.The formalism we use ensures that the Generalized Ward's Identities are satisfied. An important conclusion of this work is the presence of a pseudo-Goldstone mode associated with the proton superconductor in neutron-star matter. Indeed, the Goldstone mode, which characterizes a pure superfluid, is suppressed in usual superconductors due to the long-range Coulomb interaction, which only allows a plasmon mode. However, for the proton component of stellar matter, the Coulomb field is screened by the electrons and a pseudo-Goldstone mode occurs, with a velocity increased by the Coulomb interaction.
description: Submitted for publication
Architecture for Cooperative Prefetching in P2P Video-on- Demand System
Creators: name: Abbasi, Ubaid
name: Ahmed, Toufik
Publisher: name: arXiv
Year: 2010
Subjects: subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: Most P2P VoD schemes focused on service architectures and overlays optimization without considering segments rarity and the performance of prefetching strategies. As a result, they cannot better support VCRoriented service in heterogeneous environment having clients using free VCR controls. Despite the remarkable popularity in VoD systems, there exist no prior work that studies the performance gap between different prefetching strategies. In this paper, we analyze and understand the performance of different prefetching strategies. Our analytical characterization brings us not only a better understanding of several fundamental tradeoffs in prefetching strategies, but also important insights on the design of P2P VoD system. On the basis of this analysis, we finally proposed a cooperative prefetching strategy called "cooching". In this strategy, the requested segments in VCR interactivities are prefetched into session beforehand using the information collected through gossips. We evaluate our strategy through extensive simulations. The results indicate that the proposed strategy outperforms the existing prefetching mechanisms.
description: 13 Pages, IJCNC
Variational method for lattice spectroscopy with ghosts
Creators: name: Burch, Tommy
name: Gattringer, Christof
name: Glozman, Leonid Ya.
name: Hagen, Christian
name: Lang, C. B.
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: 530 Physik

description: We discuss the variational method used in lattice spectroscopy calculations. In particular we address the role of ghost contributions which appear in quenched or partially quenched simulations and have a non-standard euclidean time dependence. We show that the ghosts can be separated from the physical states. Our result is illustrated with numerical data for the scalar meson.
Additional file 1 of The Minnesota attributable risk of kidney donation (MARKD) study: a retrospective cohort study of long-term (> 50 year) outcomes after kidney donation compared to well-matched healthy controls
Creators: name: Vock, David M.
name: Helgeson, Erika S.
name: Mullan, Aidan F.
name: Issa, Naim S.
name: Sanka, Sujana
name: Saiki, Alison C.
name: Mathson, Kristin
name: Chamberlain, Alanna M.
name: Rule, Andrew D.
name: Matas, Arthur J.
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Marine Biology
subject: 60506 Virology
subject: FOS: Biological sciences

description: Supplementary Material 1
An application of the variational analysis to calculate the meson spectral functions
Creators: name: Ohno, H.
name: Aoki, S.
name: Ejiri, S.
name: Kanaya, K.
name: Maezawa, Y.
name: Saito, H.
name: Umeda, T.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present a new method to calculate meson spectral functions (SPFs) on the lattice based on a variational method. Because, on a finite volume lattice, the meson SPFs have discrete spectra only, a suitable way to extract such discrete signals is needed. Using a variational method, we can calculate several discrete quantities such as the position and the area of spectral peaks for low-lying states. Moreover data accuracy can be improved by increasing the number of basis functions. In this report, we first confirm our method in the free quark case and show that our method works well. Then, we apply the method to a quenched lattice QCD simulation and calculate the charmonium SPFs for S and P-waves at zero temperature. Our results for the ground state are well consistent with the position and the area of the lowest peaks of charmonium SPFs calculated by the conventional maximum entropy method. For first excited states, the signals may be reliablly extracted with our method because the charmonium mass converges to a value close to the experimental one when the number of basis functions is increased. We also investigate the SPFs for S-wave charmonia at below and above $T_c$. Our results suggest that $J/ψ$ and $η_c$ may survive up to 1.4$T_c$.
description: 7 Pages, 6 figures, talk presented at the XXVIII International Symposium on Lattice Field Theory, June 14-19 2010, Villasimius, Italy
Dissipative effects in the electronic transport through DNA molecular wires
Creators: name: Gutiérrez, Rafael
name: Mandal, Sudeep
name: Cuniberti, Gianaurelio
Publisher: name: Universität Regensburg
Year: 2005
Subjects: subject: 530 Physik

description: We investigate the influence of a dissipative environment which effectively comprises the effects of counterions and hydration shells, on the transport properties of short DNA wires. Their electronic structure is captured by a tight-binding model which is embedded in a bath consisting of a collection of harmonic oscillators. Without coupling to the bath a temperature independent gap in the electronic spectrum opens in the electronic spectrum. Upon allowing for electron-bath interaction the gap becomes temperature dependent. It increases with temperature in the weak-coupling limit to the bath degrees of freedom. In the strong-coupling regime a bath-induced {\it pseudo-gap} is formed. As a result, a crossover from semiconducting to metallic behavior in the low-voltage region of the {\it I}-{\it V} characteristics is observed with increasing temperature. The temperature dependence of the transmission near the Fermi energy, {\it t}({\it E}$_{F}$), manifests an Arrhenius-like behavior in agreement with recent transport experiments. Moreover, {\it t}({\it E}$_{F}$) shows a weak exponential dependence on the wire length, typical of strong incoherent transport. Disorder e ects smear the electronic bands, but do not appreciably a ect the pseudo-gap formation.
Group Picnic with Bessie P. Edwards, Irving Edwards, Nat Smith, and Gilbert Miller
Creators: name: Springs Historical Society
Publisher: name: Unknown
Year: 1880
Subjects: East Hampton
Springs
Edwards Family
Picnic baskets
Picnics
Picnic grounds
Miller Family

description: This image shows a group of picnickers seated on a grassy hill. The inscription accompanied with this image identifies a few individuals seen in the picture as: Bessie P. Edwards (In white hat), Irving Edwards (seated with bent knees), Nat Smith (Dressed in black), and Gilbert Miller (Facing the group).
description: This material was lent to the Long Island Collection by the Springs Historical Society Library for digitization purposes.
GRB 090426: Discovery of a jet break in a short burst afterglow
Creators: name: Guelbenzu, A. Nicuesa
name: Klose, S.
name: Rossi, A.
name: Kann, D. A.
name: Krühler, T.
name: Greiner, J.
name: Rau, A.
name: E., F. Olivares
name: Afonso, P. M. J.
name: Filgas, R.
name: Yoldaş, A. Küpcü
name: McBreen, S.
name: Nardini, M.
name: Schady, P.
name: Schmidl, S.
name: Updike, A. C.
name: Yoldaş, A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Context: The link between the duration of GRBs and the nature of their progenitors remains disputed. Short bursts (with durations of less than ~2 s) are less frequently observed, technically more difficult to localize, and exhibit significantly fainter afterglows. Aims: It is of critical importance to establish whether the burst duration can reliably distinguish the different GRB population models of collapsars and compact stellar mergers. The Swift GRB 090426 provides an unique opportunity to address this question. Its duration (T_90=1.28 s) places GRB 090426 firmly in the short burst population, while the high redshift (z=2.609), host galaxy properties, and prompt emission spectral characteristics are more similar to those of long-duration GRBs. Methods: On the basis of data obtained with the Tautenburg 2m telescope (Germany) and the 7-channel imager GROND (La Silla, Chile), we compiled the most finely sampled light curve available for a short burst optical/NIR afterglow. The light curve was then analysed in a standard fashion. GROND and XRT data were used to determine the broad-band spectral energy distribution of the afterglow across more than three orders of magnitude. Results: Our data show that a light curve break exists at 0.4 days, which is followed by a steep decay. This light curve decay is achromatic in the optical/NIR bands, and interpreted as a post-jet break phase. The X-ray data do not disagree with this interpretation. Conclusions: The half-opening angle of the suspected jet as well as the luminosity of the optical afterglow provide additional evidence that GRB 090426 is probably linked to the death of a massive star rather than to the merger of two compact objects.
description: letter to A&A, in press
Additional file 2 of The Minnesota attributable risk of kidney donation (MARKD) study: a retrospective cohort study of long-term (> 50 year) outcomes after kidney donation compared to well-matched healthy controls
Creators: name: Vock, David M.
name: Helgeson, Erika S.
name: Mullan, Aidan F.
name: Issa, Naim S.
name: Sanka, Sujana
name: Saiki, Alison C.
name: Mathson, Kristin
name: Chamberlain, Alanna M.
name: Rule, Andrew D.
name: Matas, Arthur J.
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Marine Biology
subject: 60506 Virology
subject: FOS: Biological sciences

description: Supplementary Material 2
Physikalisch basierte mehrskalige Simulation der additiv gefertigten Nickel-Legierung Inconel 718
Creators: name: Maiwald-Immer, Tobias
Publisher: name: Karlsruhe
Year: 2019
Subjects: Additive Fertigung
Inconel 718
IN718
Ausscheidungskinetik
Streckgrenze
Werkstoffsimulation
Prozesssimulation
Nickelbasislegierung
Mikrostruktur
Integrated Computational Materials Engineering (ICME)
additive manufacturing
precipitation kinetic
yield strength
material modelling
process modelling
nickel base alloy
microstructure

description: Die Festigkeit ausscheidungsgehärteter Werkstoffe wie Inconel 718 wird durch die chemische Zusammensetzung, den Herstellprozess, die Mikrostruktur und die Wärmebehandlung bestimmt. Diese komplexen Abhängigkeiten erfordern eine detaillierte Prozess- und Materialanalyse, um das Festigkeitspotenzial im gesamten Materiallebenszyklus optimal ausnutzen zu können. Die vorliegende Arbeit entwickelt dafür eine integrierte, physikalisch basierte Simulationskette, welche in Abhängigkeit von Temperatur und Zeit die Kopplung der Legierungselemente mit der erreichbaren Materialfestigkeit ermöglicht. Ausgehend vom Erstarrungszustand werden die Thermodynamik und die Thermokinetik von IN718 basierend auf der CALPHAD-Methode mit MatCalc© berechnet. Die Streckgrenze wird anhand dieser thermokinetischen Daten berechnet. Die entscheidenden Festigkeitsbeiträge, Mischkristall- und Ausscheidungshärtung, werden auf Basis der Phasenchemie und der Interaktion zwischen Versetzungen und Ausscheidungen berechnet. Die Validierung der Ergebnisse erfolgt sowohl an umfangreichen Literaturdaten als auch an eigenen Experimenten an einkristallin gegossenen und additiv gefertigten IN718. Das additive Material wird ausgehend von einer Prozessfensteranalyse mit unterschiedlichen Materialeigenschaften hergestellt. Die erreichte hohe Modellgenauigkeit ermöglicht die Berechnung von Überalterungsprozessen von bis zu 50000 h. Eine Sensitivitätsanalyse zeigt abschließend die Signifikanz einzelner Modellparameter und identifiziert Schlüsselgrößen der Werkstoff- und Prozessmodellierung.
Additional file 3 of The Minnesota attributable risk of kidney donation (MARKD) study: a retrospective cohort study of long-term (> 50 year) outcomes after kidney donation compared to well-matched healthy controls
Creators: name: Vock, David M.
name: Helgeson, Erika S.
name: Mullan, Aidan F.
name: Issa, Naim S.
name: Sanka, Sujana
name: Saiki, Alison C.
name: Mathson, Kristin
name: Chamberlain, Alanna M.
name: Rule, Andrew D.
name: Matas, Arthur J.
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Marine Biology
subject: 60506 Virology
subject: FOS: Biological sciences

description: Supplementary Material 3
Cross-Layer Resource Allocation Scheme Under Heterogeneous Constraints for Next Generation High Rate WPAN
Creators: name: Khalil, Ayman
name: Crussiere, Matthieu
name: Helard, Jean-Francois
Publisher: name: arXiv
Year: 2010
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: In the next generation wireless networks, the growing demand for new wireless applications is accompanied with high expectations for better quality of service (QoS) fulfillment especially for multimedia applications. Furthermore, the coexistence of future unlicensed users with existing licensed users is becoming a challenging task in the next generation communication systems to overcome the underutilization of the spectrum. A QoS and interference aware resource allocation is thus of special interest in order to respond to the heterogeneous constraints of the next generation networks. In this work, we address the issue of resource allocation under heterogeneous constraints for unlicensed multiband ultra-wideband (UWB) systems in the context of Future Home Networks, i.e. the wireless personal area network (WPAN). The problem is first studied analytically using a heterogeneous constrained optimization problem formulation. After studying the characteristics of the optimal solution, we propose a low-complexity suboptimal algorithm based on a cross-layer approach that combines information provided by the PHY and MAC layers. While the PHY layer is responsible for providing the channel quality of the unlicensed UWB users as well as their interference power that they cause on licensed users, the MAC layer is responsible for classifying the unlicensed users using a two-class based approach that guarantees for multimedia services a high-priority level compared to other services. Combined in an efficient and simple way, the PHY and MAC information present the key elements of the aimed resource allocation. Simulation results demonstrate that the proposed scheme provides a good tradeoff between the QoS satisfaction of the unlicensed applications with hard QoS requirements and the limitation of the interference affecting the licensed users.
description: 17 Pages, IJCNC
Spin transitions in an incompressible liquid Coulomb-coupled to a quantum dot
Creators: name: Apalkov, V. M.
name: Chakraborty, T.
name: Schüller, Christian
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: 530 Physik

description: We report on our investigation of the low- lying energy spectra and charge density of a two-dimensional quantum Hall liquid at v=2/5 that is Coulomb-coupled to a quantum dot. The dot contains a hole and two/three electrons. We found that any external perturbation caused by the close proximity of the quantum dot locally changes the spin polarization of the incompressible liquid. The effect depends crucially on the separation distance of the quantum dot from the electron plane. Electron density distribution in the quantum Hall layer indicates creation of a quasihole that is localized by the close proximity of the quantum dot. Manifestation of this effect in the photoluminescence spectroscopy is also discussed.
Sets with more differences than sums
Creators: name: Schlage-Puchta, Jan-Christoph
Publisher: name: arXiv
Year: 2011
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11P70

description: We show that a random set of integers with density 0 has almost always more differences than sums. This proves a conjecture by Martin and O'Bryant.
Photoluminescence Characteristics of Ir(ppy)3 and PtOEP doped in TPD Host Material
Creators: name: Tsuboi, Taiju
name: Murayama, Hideyuki
name: Penzkofer, Alfons
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: Endothermic energy transfer; Photoluminescence; Phosphorescence; Ir(ppy)3; PtOEP; OLED
subject: 530 Physik

description: Thin films of triphenylamine dimer, N,N′-bis(3 methylphenyl)-N,N′-bis(phenyl)-benzidine (TPD), fac tris(2-phenylpyridine) iridium (Ir(ppy)3) doped TPD, and platinum octaethyl porphine (PtOEP) doped TPD have been characterized by photoluminescence measurements at several excitation wavelengths in the temperature range from 10 K to room temperature. The investigated doped films are phosphorescent OLED materials whereby TPD acts as triplet reservoir for Ir(ppy)3 (endothermic transfer system) and as pathway intermediate for PtOEP (exothermic transfer system). At low temperature, phosphorescence of TPD was observed. At short-wavelength excitation, where TPD is absorbing, Förster-type energy transfer to Ir(ppy)3 and PtOEP was resolved. The temperature-dependent phosphorescence studies revealed Dexter-type triplet–triplet forth and back excitation transfer between Ir(ppy)3 and TPD and are compatible with Dexter-type triplet–triplet forward excitation transfer from TPD to PtOEP.
description: Proceedings of the 6th International Conference on Nano-Molecular Electronics, ICNME2004, Kobe, Japan, Dec. 15-17, 2004.
Class Based Admission Control by Complete Partitioning -Video on Demand Server
Creators: name: Kanrar, Soumen
name: Siraj, Mohammad
Publisher: name: arXiv
Year: 2010
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: In the next generation network (NGN) environment specific consideration is on bandwidth minimization, because this reduces the cost of network. In response to the growing market demand for multimedia traffic transmission, NGN concept has been produced. The next generation network provides multimedia services over high speed networks, which supports DVD quality video on demand. Although it has numerous advantages, more exploration of the large-scale deployment video on demand is still needed. The focus of the research presented in this paper is a class based admission control by the complete partitioning of the video on demand server. In this paper we present analytically and by simulation how the blockage probability of the server significantly affects the on demand video request and the service. We also present how the blockage probability affects the performance of the video on demand server.
description: 12 Pages, IJCNC
Toward uniform nanotubular compounds: Synthetic approach and ab initio calculations
Creators: name: Miller, Glen P.
name: Okano, Shinya
name: Tomanek, David
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: 530 Physik

description: We propose to synthesize a new class of single-walled nanotubular compounds (SWNCs) and investigate the interplay between their structural and electronic properties using ab initio density functional calculations. SWNCs are composed of cyclacenes of variable diameter interconnected by various linker compounds. Cyclacenes map directly onto and can be viewed as the shortest segments of (n,0) zigzag carbon nanotubes. We focus on cyclacenes with n=6–12 fused benzene rings interconnected by biphenyl, tetrazine, or acetylene linkers. Depending upon the nature and the orientation of the linkers, we find it possible to change the systems from narrow-gap to wide-gap semiconductors, and to modulate the band dispersion, suggesting the possibility of band gap engineering.
ปัญหาแรงงานบังคับกับมาตรการทางกฎหมายเพื่อลดผลกระทบต่อการส่งออกสินค้าประมงไปยังประเทศสหรัฐอเมริกา
Creators: name: พนิชกร สินชัยกิจ
Publisher: name: สำนักวิชานิติศาสตร์ มหาวิทยาลัยแม่ฟ้าหลวง
Year: 2563
Subjects: การค้ามนุษย์
แรงงานบังคับ
แรงงานประมง

description: วารสารนิติศาสตร์ มหาวิทยาลัยแม่ฟ้าหลวง, 3, 2, 89-116
Magnetic forces and localized resonances in electron transfer through quantum rings
Creators: name: Poniedziałek, M. R.
name: Szafran, B.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the current flow through semiconductor quantum rings. In high magnetic field the current is usually injected to the arm of the ring preferred by classical magnetic forces. However, for narrow magnetic field intervals that appear periodically on the magnetic field scale the current is injected to the other arm of the ring. We indicate that the appearance of the anomalous -- non-classical -- current circulation results from Fano interference involving localized resonant states. The identification of the Fano interference is based on the comparison of the solution of the scattering problem with the results of the stabilization method. The latter employs the bound-state type calculations and allows to extract both the energy of metastable states localized within the ring and the width of resonances by analysis of the energy spectrum of a finite size system in function of its length. The Fano resonances involving states of anomalous current circulation become extremely narrow on both magnetic field and energy scales. This is consistent with the orientation of the Lorentz force that tends to keep the electron within the ring and thus increases the lifetime of the electron localization within the ring. Absence of periodic Fano resonances in electron transfer probability through a quantum ring containing an elastic scatterer is also explained.
description: This paper explains the origins of anomalous (non-classical) current circulation reported in http://arxiv.org/abs/1004.2196
Пізньосередньовічні матеріали з досліджень Вишгорода 2002 р.
Creators: name: Козюба, Віталій
name: Орлов, Руслан
name: Чекановський, Андрій
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 430101
subject: Archaeological science

description: Козюба В., Орлов Р., Чекановський А. Пізньосередньовічні матеріали з досліджень Вишгорода 2002 р. - Нові дослідження пам’яток козацької доби в Україні. Вип.12. - Київ, 2003. - с.47-48.
Experimental and numerical investigation of hydraulic stimulation as a risk mitigation technique for fault slip rockburst hazards in deep underground mining
Creators: name: Schmidt, Erika Susan
Publisher: name: University of British Columbia
Year: 2018

description: Fault slip and associated rockbursting present a significant risk to the safety of personnel and infrastructure in deep underground mines. Sudden displacement can occur on pre-existing fault planes when mining alters the stress regime present at depth, with the resulting energy release causing potentially extensive damage to mine workings. Recently, hydraulic stimulation, defined here as the injection of fluid in proximity to a fault, has been explored as a method of reducing fault slip risk. This has the potential to release the built-up stress and strain energy driving slip events before mining is advanced and workers are exposed; however, field trials to date have yielded varying degrees of success. In response, a two-part investigation has been conducted to examine the effectiveness of hydraulic stimulation in preventing fault slip for a range of geometric characteristics. In the first investigation, a laboratory testing procedure was developed in which pressurized water was injected through cylindrical granite specimens containing different offset saw cuts subject to triaxial loading. A state-of-the-art servo-controlled system was used to measure displacements, stress drops and moment magnitudes. Results indicate that heterogeneous fault surfaces produce slip events with greater moment magnitudes than smooth surfaces, and tend to respond less effectively to injection. Three-dimensional (3D) post-test specimen imaging demonstrates that variations in moment magnitude and stress release are linked to the breakdown of asperities and accompanying cohesive strength loss that occurs during shearing. This explains why stimulation is less effective on highly irregular fault surfaces, such as those containing asperities or rock bridges, since fluid pressure acts to reduce frictional strength only. In the second investigation, a numerical model of a hypothetical mining sequence was created to determine the effect of hydraulic stimulation on the frequency and severity of mining-induced slip. Though injection was effective at mitigating slip in planar fault models, increasing fault strength was observed to correlate with larger, more damaging slip events. Additionally, when fault heterogeneity was explicitly incorporated, stimulation treatments were less effective as slip and fluid propagation were impeded by intact rock segments, illustrating the importance of understanding fault geometry before the successful implementation of field-scale treatments.
Microscopic analysis of optical gain in InGaN/GaN quantum wells
Creators: name: Witzigmann, B.
name: Laino, V.
name: Luisier, M.
name: Schwarz, Uli
name: Feicht, Georg
name: Wegscheider, Werner
name: Engl, K.
name: Furitsch, M.
name: Leber, A.
name: Lell, A.
name: Härle, V.
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: 530 Physik

description: A microscopic theory is used to analyze optical gain in InGaN/GaN quantum wells (QW). Experimental data are obtained from Hakki–Paoli measurements on edge-emitting lasers for different carrier densities. The simulations are based on the solution of the quantum kinetic Maxwell–Bloch equations, including many-body effects and a self-consistent treatment of piezoelectric fields. The results confirm the validity of a QW gain description for this material system with a substantial inhomogeneous broadening due to structural variation. They also give an estimate of the nonradiative recombination rate.
คนไม่ใช่ เขียนตอบอะไรก็ผิด
Creators: name: ปิ่นหยก ศาสน์ประดิษฐ์
Publisher: name: สำนักวิชานิติศาสตร์ มหาวิทยาลัยแม่ฟ้าหลวง
Year: 2563
Subjects: ความแตกต่างระหว่างการเขียนตอบที่ไม่ถูกต้องและถูกต้อง
เทคนิคในการเขียนตอบข้อสอบกฎหมาย
ผู้ที่กำลังเตรียมสอบกฎหมาย

description: วารสารนิติศาสตร์ มหาวิทยาลัยแม่ฟ้าหลวง, 3, 2, 117-130
Pairing, crystallization and string correlations of mass-imbalanced atomic mixtures in one-dimensional optical lattices
Creators: name: Roscilde, Tommaso
name: Boschi, Cristian Degli Esposti
name: Dalmonte, Marcello
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We numerically determine the very rich phase diagram of mass-imbalanced binary mixtures of hardcore bosons (or equivalently -- fermions, or hardcore-Bose/Fermi mixtures) loaded in one-dimensional optical lattices. Focusing on commensurate fillings away from half filling, we find a strong asymmetry between attractive and repulsive interactions. Attraction is found to always lead to pairing, associated with a spin gap, and to pair crystallization for very strong mass imbalance. In the repulsive case the two atomic components remain instead fully gapless over a large parameter range; only a very strong mass imbalance leads to the opening of a spin gap. The spin-gap phase is the precursor of a crystalline phase occurring for an even stronger mass imbalance. The fundamental asymmetry of the phase diagram is at odds with recent theoretical predictions, and can be tested directly via time-of-flight experiments on trapped cold atoms.
description: 4 pages, 4 figures + Supplementary Material
หลักพื้นฐานกฎหมายมหาชน
Creators: name: ชนินทร์ อินทรปัญญา
Publisher: name: สำนักวิชานิติศาสตร์ มหาวิทยาลัยแม่ฟ้าหลวง
Year: 2563
Subjects: กฎหมายมหาชน
หลักพื้นฐานกฎหมายมหาชน
หลักทั่วไปเกี่ยวกับกฎหมายมหาชน
วิชากฎหมายมหาชน
องค์ความรู้ด้านกฎหมายมหาชน

description: วารสารนิติศาสตร์ มหาวิทยาลัยแม่ฟ้าหลวง, 3, 2, 131-149
Epigenetic heterogeneity revealed through single-cell DNA methylation sequencing
Creators: name: Hui, Zhao Kun (Tony)
Publisher: name: University of British Columbia
Year: 2018

description: Increasing evidence of functional and transcriptional heterogeneity in phenotypically similar single-cells has prompted interest in protocols for obtaining parallel methylome data. Despite appreciable advancements in experimental protocols for single-cell DNA methylation measurements, methods for analyzing the resulting data are still immature. To address the challenge of stochastic data loss associated with single cell measurements, current strategies average methylation in windows or region sets. However previous studies have demonstrated that single CpGs are functional and our analysis of single cell methylation measurements revealed a rapid decay in concordance neighbouring CpG states beyond 1kb. To leverage the information content of individual CpGs in the context of single cell methylation measurements we developed an analytical strategy for deriving single-cell DNA methylation states using individual CpGs, which we term PDclust. We validated PDclust on existing datasets and on data we generated from single index-sorted murine and human hematopoietic stem cells (HSCs) that are highly enriched in functionally defined stem cells. Using PDClust, we identified epigenetically distinct subpopulations within these HSC populations. Strikingly, human cord blood derived HSC populations were separable by donor specific methylation states whereas more differentiated hematopoietic cells separated solely by cell type. Interestingly, removal of methylation sites near genetic variants did not impact this separation, suggesting that these epigenetic states may be a consequence of environmental differences. Finally, through protocol optimization and deep sequencing we generated one of the most comprehensive sets of single cell methylome profiles (20% of CpGs on average) and from these were able to generate genomewide profiles from as little as 6 epigenetically related HSCs to derive subtype-specific regulatory states.
อำนาจสถาปนารัฐธรรมนูญและกฎหมาย
Creators: name: ณัฐดนัย นาจันทร์
Publisher: name: สำนักวิชานิติศาสตร์ มหาวิทยาลัยแม่ฟ้าหลวง
Year: 2563
Subjects: อำนาจสถาปนารัฐธรรมนูญ
รัฐธรรมนูญ
กฎหมาย

description: วารสารนิติศาสตร์ มหาวิทยาลัยแม่ฟ้าหลวง, 3, 2, 151-158
Tunnelling rates for the nonlinear Wannier-Stark problem
Creators: name: Wimberger, Sandro
name: Schlagheck, Peter
name: Mannella, Riccardo
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: 530 Physik

description: We present a method to numerically compute accurate tunnelling rates for a Bose-Einstein condensate which is described by the nonlinear Gross-Pitaevskii equation. Our method is based on a sophisticated real-time integration of the complex-scaled Gross-Pitaevskii equation, and it is capable of finding the stationary eigenvalues for the Wannier-Stark problem. We show that even weak nonlinearities have significant effects in the vicinity of very sensitive resonant tunnelling peaks, which occur in the rates as a function of the Stark field amplitude. The mean-field interaction induces a broadening and a shift of the peaks, and the latter is explained by analytic perturbation theory.
Photodynamics of the small BLUF protein BlrB from Rhodobacter sphaeroides
Creators: name: Zirak, Peyman
name: Penzkofer, Alfons
name: Schiereis, T.
name: Hegemann, P.
name: Jung, A.
name: Schlichting, I.
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: BLUF domain; BlrB from Rhodobacter sphaeroides; Blue-light photoreceptor; Absorption spectroscopy; Fluorescence spectroscopy; Photo-cycle; Photo-degradation; Photo-reduction; Flavoprotein; Flavins; FAD; Flavin-semiquinone
subject: 530 Physik

description: The BLUF protein BlrB from the non-sulphur anoxyphototrophic purple bacterium Rhodobacter sphaeroides is characterized by absorption and emission spectroscopy. BlrB expressed from E. coli binding FAD, FMN, and riboflavin (called BrlBI) and recombinant BlrB containing only FAD (called BlrBII) are investigated. The dark-adapted proteins exist in two different receptor conformations (receptor states) with different sub-nanosecond fluorescence lifetimes (BLUFr,f and BLUFr,sl). Some of the flavin-cofactor (ca. 8%) is unbound in thermodynamic equilibrium with the bound cofactor. The two receptor conformations are transformed to putative signalling states (BLUFs,f and BLUFs,sl) of decreased fluorescence efficiency and shortened fluorescence lifetime by blue-light excitation. In the dark at room temperature both signalling states recover back to the initial receptor states with a time constant of about 2 s. Quantum yields of signalling state formation of about 90% for BlrBII and about 40% for BlrBI were determined by intensity dependent transmission measurements. Extended blue-light excitation causes unbound flavin degradation (formation of lumichrome and lumiflavin-derivatives) and bound cofactor conversion to the semiquinone form. The flavin-semiquinone further reduces and the reduced flavin re-oxidizes back in the dark. A photo-dynamics scheme is presented and relevant quantum efficiencies and time constants are determined.
Double scaling limit for modified Jacobi-Angelesco polynomials
Creators: name: Deschout, Klaas
name: Kuijlaars, Arno B. J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: We consider multiple orthogonal polynomials with respect to two modified Jacobi weights on touching intervals [a,0] and [0,1], with a < 0, and study a transition that occurs at a = -1. The transition is studied in a double scaling limit, where we let the degree n of the polynomial tend to infinity while the parameter a tends to -1 at a rate of O(n^{-1/2}). We obtain a Mehler-Heine type asymptotic formula for the polynomials in this regime. The method used to analyze the problem is the steepest descent technique for Riemann-Hilbert problems. A key point in the analysis is the construction of a new local parametrix.
description: 47 pages, 9 figures
Vibrational effects in the linear conductance of carbon nanotubes
Creators: name: Gheorghe, Marieta
name: Gutiérrez, Rafael
name: Ranjan, N.
name: Pecchia, A.
name: Carlo, A.
name: Cuniberti, Gianaurelio
Publisher: name: Universität Regensburg
Year: 2005
Subjects: subject: 530 Physik

description: We study the influence of structural lattice fluctuations on the elastic electron transport in single-wall carbon nanotubes within a density-functional-based scheme. Results obtained from a frozen-phonon approach as well as from molecular dynamics simulations are compared. The linear conductance can be calculated after appropriate configurational averages. We demonstrate that the effect of structural fluctuations can be captured by the Anderson model of disorder. Further, the influence of individual vibrational modes on the electronic transport is discussed and it is shown that at different energies the normal modes hierarchically contribute to the charge transport process.
Testing the black disk limit in $pp$ collisions at very high energy
Creators: name: Brogueira, P.
name: de Deus, J. Dias
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We use geometric scaling invariant quantities to measure the approach, or not, of the imaginary and real parts of the elastic scattering amplitude, to the black disk limit, in $pp$ collisions at very high energy.
description: 11 pages, 4 figures
The NOvA neutrino experiment and its astrophysics program
Creators: name: Strait, Matthew
Publisher: name: Zenodo
Year: 2021
Subjects: Neutrino Masses and Mixing

description: Plenary Contributed Talk at the
 "XIX International Workshop on Neutrino Telescopes"
 on line - 18-26 February, 2021
description: for the NOvA collaboration
Дослідження вишгородського гончарного центру ХІ-ХІІ ст.
Creators: name: Орлов, Руслан
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 430101
subject: Archaeological science

description: Орлов Р.С. Дослідження вишгородського гончарного центру ХІ-ХІІ ст. Старожитності Вишгородщини: Збірник тез доповідей і повідомлень 10-ої науково-практичної конференції присвяченої "Дню пам'яті Ярослава Мудрого", 28 лютого 2003р. М.Вишгород, (Вишгородський історико-культурний заповідник), Вишгоро, 2003. - с.34-65
Catalogs of Hot White Dwarfs in the Milky Way from GALEX's Ultraviolet Sky Surveys. Constraining Stellar Evolution
Creators: name: Bianchi, Luciana
name: Efremova, Boryana
name: Herald, James
name: Girardi, Leo
name: Zabot, Alexandre
name: Marigo, Paola
name: Martin, Christopher
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present comprehensive catalogs of hot star candidates in the Milky Way, selected from GALEX far-UV (FUV, 1344-1786 AA) and near-UV (NUV, 1771-2831 AA) imaging. The FUV and NUV photometry allows us to extract the hottest stellar objects, in particular hot white dwarfs (WD), which are elusive at other wavelengths because of their high temperatures and faint optical luminosities. We generated catalogs of UV sources from two GALEX's surveys: AIS (All-Sky Imaging Survey, depth ABmag~19.9/20.8 in FUV/NUV) and MIS (Medium-depth Imaging Survey, depth ~22.6/22.7mag). The two catalogs (from GALEX fifth data release) contain 65.3/12.6 million (AIS/MIS) unique UV sources with error(NUV)<0.5mag, over 21,435/1,579 square degrees. We also constructed subcatalogs of the UV sources with matched optical photometry from SDSS (7th data release): these contain 0.6/0.9million (AIS/MIS) sources with errors <0.3mag in both FUV and NUV, excluding sources with multiple optical counterparts, over an area of 7,325/1,103 square degrees. All catalogs are available online. We then selected 28,319(AIS)/9,028(MIS) matched sources with FUV-NUV0.1 isolates binaries with largely differing Teff's, and some intruding QSOs. Available spectroscopy for a subsample indicates that hot-star candidates with NUV-r<0.1 have negligible contamination by non-stellar objects. We discuss the distribution of sources in the catalogs, and the effects of error and color cuts on the samples. The density of hot-star candidates increases from high to low Galactic latitudes, but drops on the MW plane due to dust extinction. Our hot-star counts at all latitudes are better matched by Milky Way models computed with an initial-final mass relation that favours lower final masses. (ABRIDGED)
description: To appear in MNRAS. Better printed in colour
Macrosegregation in solidification of A356
Creators: name: Khadivinassab, Hatef
Publisher: name: University of British Columbia
Year: 2018

description: A combined experimental / numerical approach has been applied to investigate the bulk transfer of solute due to liquid metal feeding during shape casting of aluminum alloy A356 (Al-7Si-0.3Mg). A series of dumbbell-shaped experimental casting geome- tries have been developed, which promote solute redistribution due to liquid metal feeding. Three of the castings were produced in small moulds with natural cooling, forced cooling and insulated conditions and one casting was made in a large mould with natural cooling. The redistribution of solute in the castings has been evaluated using a novel image processing technique based on the area fraction of silicon. The results show that the casting with the forced cooling configuration exhibited a larger degree of macrosegregation. In the numerical model, silicon segregation during solidification is calculated as- suming the Scheil approximation, and is coupled with a macro-scale transport model that considers resistance in the mushy zone and feeding flow. The model has been implemented within the commercial CFD software, FLUENT, which simultaneously solves the thermal, fluid flow fields and species segregation on the macro-scale. The results from the simulation agree with the experimental results, except for the cases where significant liquid encapsulation occurs. The model predicts high levels of enrich- ment when liquid encapsulation is present in the joint section of the dumbbell-shaped castings. Finally, a constitutive behaviour relationship was developed based on the Ludwik- Hollomon equation to predict the flow stress of Al-Si-Mg alloys with varying silicon composition and Dendrite Arm Spacing (das) in the as-cast (ac) or T6 condition with high accuracy. This model was then used with the results of the segregation model to predict yield strength distribution in the aforementioned dumbbell-shaped casting. The results show that silicon segregation has a more significant effect on the yield strength than das.