cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Costing in the Operations and Cost Model
Creators: name: Williamson, William E.
name: Kelley, Jorell L.
name: Williamson, William E.
name: Kelley, Jorell L.
Publisher: name: Unknown
Year: 1980
Subjects: Public Economics

description: Presented at the 21st Transportation Research Forum meeting, Oct. 27-29, 1980, Philadelphia, PA
Evolution of the surface morphology of GaSb epitaxial layers deposited by molecular beam epitaxy (MBE) on GaAs (100) substrates
Creators: name: Jarosz, Dawid
name: Bobko, Ewa
name: Stachowicz, Marcin
name: Przeździecka, Ewa
name: Krzemiński, Piotr
name: Ruszała, Marta
name: Juś, Anna
name: Trzyna-Sowa, Małgorzata
name: Maś, Kinga
name: Wojnarowska-Nowak, Renata
name: Nowak, Oskar
name: Gudyka, Daria
name: Tabor, Brajan
name: Marchewka, Michał
Publisher: name: arXiv
Year: 2024
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: This study presents a demonstration of the surface morphology behavior of gallium antimonide (GaSb) layers deposited on gallium arsenide (GaAs) (100) substrates using three different methods: metamorphic, interfacial misfit (IMF) matrix, and a method based on a Polish patent application number P.443805. The first two methods are commonly used, while the third differs in the sequence of successive steps and the presence of Be doping at the initial growth stage. By comparing GaSb layers made by these methods for the same growth parameters, the most favorable procedure for forming a GaSb buffer layer is selected. Using GaAs substrates with a GaSb buffer layer is a cheaper alternative to using GaSb substrates in infrared detector structures based on II-type superlattices T2SL, such as InAs/GaSb. The quality of the GaSb buffer layer determines the quality of the subsequent layers that form the entire T2SL and affects factors such as dark current in terms of application
description: 8 pages, 11 figures
Source data for: Shambhu Yadav, Markus Waldeck-Weiermair, Fotios Spyropoulos, Roderick Bronson, Arvind K. Pandey, Apabrita Ayan Das, Alexander C. Sisti, Taylor A. Covington, Venkata Thulabandu, Shari Caplan, William Chutkow, Benjamin Steinhorn, and Thomas Michel Sensory ataxia and cardiac hypertrophy caused by neurovascular oxidative stress in chemogenetic transgenic mouse lines
Creators: name: Yadav, Shambhu
name: Spyropoulos, Fotios
name: Waldeck-Weiermair, Markus
name: Bronson, Roderick
name: Pandey, Arvind K.
name: Das, Apabrita Ayan
name: Sisti, Alexander C.
name: Covington, Taylor A.
name: Thulabandu, Venkata
name: Caplan, Shari
name: Chutkow, William
name: Steinhorn, Benjamin
name: Michel, Thomas
Publisher: name: figshare
Year: 2023
Subjects: Proteomics and intermolecular interactions (excl. medical proteomics)
Enzymes
Biochemistry and cell biology not elsewhere classified

description: Oxidative stress is associated with cardiovascular and neurodegenerative diseases. Here we report studies of neurovascular oxidative stress in new chemogenetic transgenic mouse lines expressing yeast D-amino acid oxidase (DAAO) in neurons and vascular endothelium. When these transgenic mice are fed D-amino acids, DAAO generates hydrogen peroxide in target tissues. DAAO-TGCdh5 transgenic mice express DAAO under control of the putatively endothelial-specific Cdh5 promoter. When we provide these mice with D-alanine¬, they rapidly develop sensory ataxia caused by oxidative stress and mitochondrial dysfunction in neurons within dorsal root ganglia and nodose ganglia innervating the heart. DAAO-TGCdh5 mice also develop cardiac hypertrophy after chronic chemogenetic oxidative stress. This combination of ataxia, mitochondrial dysfunction, and cardiac hypertrophy is similar to findings in patients with Friedreich’s ataxia. Our observations confirm indicate that neurovascular oxidative stress is sufficient to cause sensory ataxia and cardiac hypertrophy. Studies of DAAO-TGCdh5 mice could provide new mechanistic insights into Friedreich’s ataxia.
Behavioural ecology of a vulnerable Arctic predator in a dynamic and changing environment
Creators: name: Togunov, Ron R.
Publisher: name: University of British Columbia
Year: 2022

description: Animal behaviour may represent an early response to variation in habitat suitability. Identifying factors that promote behaviours may be particularly important in areas undergoing environmental change. Recent advances in remote tracking, satellite imagery, and associated methodologies have enabled behavioural research in animals occupying remote environments where direct observation is impractical. Moving habitats (e.g., drifting sea ice) elicit complex behaviours, affect the apparent movement of animals, and are associated with high observation error. In this thesis, I investigated the foraging ecology of polar bears (Ursus maritimus) during the winter. First, I investigated the accuracy of a commonly used model for sea ice motion using dropped GPS collars. I showed that these satellite-based models underestimate the drift speed and have large errors estimating its direction at low speeds. Second, I developed models for remote-tracking data to study behaviours with orientation bias (e.g., relative to wind). Using a popular class of statistical models, hidden Markov models, I developed movement models that allow for error-prone environmental data. I showed that my method effectively recovered behaviour and outperformed other methods when faced with coarse environmental data. Last, I developed a model to correct for sea ice drift and investigated the effect of diurnal, seasonal, and environmental covariates on polar bear behaviour. I identified a peak in diurnal activity later in the day compared to other populations, as well as an increase in activity as the season progressed, which may be indicative of an increase in active foraging. I also identified spatial patterns of distribution with respect to season, ice concentration, and bear age that may reflect high habitat quality in western Hudson Bay and the potential presence of competitive exclusion. My thesis provides a novel assessment of the error present in remotely-sensed sea ice drift models and data that can be used to improve them in the future. In addition, my thesis presents models that can be applied to investigate important, and previously difficult to model, behaviours with orientation bias across taxa. Finally, my thesis expands on our understanding of polar bear foraging ecology with novel insights on its association with the environment.
Two-photon exchange in elastic electron-pion scattering
Creators: name: Borisyuk, Dmitry
name: Kobushkin, Alexander
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate two-photon exchange amplitude for the elastic electron-pion scattering in the dispersion-relation inspired approach, including both elastic and inelastic contributions. The latter was modelled as a sum of ρand b_1(1235) meson contributions. We find that at Q^2 < 2 GeV^2 the elastic contribution is dominant, similarly to electron-proton scattering case. At higher Q^2 the inelastic contribution is not negligible, but still smaller than the elastic one. We also explain observed rapid amplitude growth at backward angles.
description: 5 pages, 3 figures. Minor text changes, Eq.(3) corrected, to appear in Phys.Rev.C
title: Evaluating Geographic Information System methods to enhance a park visit
Creators: name: Clouston, Cassandra L.
Publisher: name: Electronic version published by Vancouver Island University
Year: 2018
Subjects: subject: Parks--Geographic information systems
subject: Parks--Public use--Manitoba--Winnipeg
subject: Assiniboine Park Conservancy (Winnipeg, Man.)

description: Visitors to a park may not be aware of all the activities the park offers, due to the lack of signage or an informational kiosk. Having a system in place to allow visitors to become informed of the park’s assets will enable them to enjoy it more fully. With today’s location aware technology, an interactive and informational experience can be achieved to enhance the public’s knowledge of their surroundings. This research project evaluated Geographic Information Systems (GIS) technology as a basis for enhancing a visitor’s experience for park environments, using The Assiniboine Park English Garden located in Winnipeg, Manitoba as the grounds for this investigation. This research may set a precedent for other parks and green spaces to invest and adopt technology to create an informative and exploratory environment for their visitors. The methodology of this research was guided by multiple factors. The evaluation of existing GIS methods used in similar locations were reviewed to look at the capabilities of current technology: paper maps, QR Codes, Web Map Tours, Web Apps and Native Apps. A determination of how to use GIS to produce a database that would analyze not only the physical entities of the park like pathways and statues, but also the seasonal aspects were undertaken. A questionnaire was conducted with park visitors to gather an understanding of the visitors’ acceptance of the technology proposed. The results of the survey were used to evaluate which of the proposed technologies would be appropriate to implement and guide the prototype development and evaluation. The English Garden staff were supportive in providing their expertise about the existing methods at use in the garden and also as a source for data. This data included AutoCAD files, excel spreadsheets and hand drawn sketches. The data was converted and, along with newly collected data, was organized into a geodatabase for use in Esri ArcGIS software suite.
Railroad Network Modeling: Recent Practical Applications
Creators: name: Bongaardt, H.L.
name: Clausing, Ernest L.
name: List, George F.
name: McEvoy, Stephen A.
name: Ramp, Horace G.
name: Bongaardt, H.L.
name: Clausing, Ernest L.
name: List, George F.
name: McEvoy, Stephen A.
name: Ramp, Horace G.
Publisher: name: Unknown
Year: 1980
Subjects: Public Economics

description: Presented at the 21st Transportation Research Forum meeting, Oct. 27-29, 1980, Philadelphia, PA
Situation and behavioural analysis of consume and waste behaviour and patterns
Creators: name: Luca, Claudia De
name: Perello, Michelle
name: Romein, Arie
name: Louw, Erik
name: Fertner, Christian
name: Große, Juliane
name: Buckingham, Susan
Publisher: name: Zenodo
Year: 2019
Subjects: waste management
waste prevention
waste behaviour
tourism
municipal waste

description: Del 3.2 aims at analysing the existing literature on tourism and waste behaviour of tourists. Based on this literature review and with the aim of filling the knowledge gap about waste behaviour of tourists, URBANWASTE has developed and circulated 3 surveys for 3 different categories: waste workers, tourism workers and tourists. The surveys have been circulated among the 11 pilots of the project and the results of this survey has been analysed within this Deliverable.
Chern-Simons anomaly as polarization effect
Creators: name: Semikoz, V. B.
name: Valle, J. W. F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The parity violating Chern-Simons term in the epoch before the electroweak phase transition can be interpreted as a polarization effect associated to massless right-handed electrons (positrons) in the presence of a large-scale seed hypermagnetic field. We reconfirm the viability of a unified seed field scenario relating the cosmological baryon asymmetry and the origin of the protogalactic large-scale magnetic fields observed in astronomy.
description: 4 pages, latex, matches published version
Recent Advances in Network Modeling and Their Implication for Freight Systems Planning
Creators: name: Friesz, Terry L.
name: Morlok, Edward K.
name: Friesz, Terry L.
name: Morlok, Edward K.
Publisher: name: Unknown
Year: 1980
Subjects: Public Economics

description: Presented at the 21st Transportation Research Forum meeting, Oct. 27-29, 1980, Philadelphia, PA
Freight Flow Distribution: A Comparison of Distance Versus Delivered Cost
Creators: name: Sharp, Gunter P.
name: Yu, H.C. David
name: Adaniya, Oscar
name: Jones, Paul S.
name: Sharp, Gunter P.
name: Yu, H.C. David
name: Adaniya, Oscar
name: Jones, Paul S.
Publisher: name: Unknown
Year: 1980
Subjects: Public Economics

description: Presented at the 21st Transportation Research Forum meeting, Oct. 27-29, 1980, Philadelphia, PA
Livre Particulier de Madame Elise Passavant-Streckeisen
Kontobuch
Creators: name: Streckeisen-Caesar, Emanuel
Publisher: name: [s.n.]
Year: 1865

description: Enthält: Register, 4 lose Einlagen
description: Französisch
description: Verzeichnung=Description=Inventaire 2014 ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Sebastian Preher
title: Payment Coordination and Liquidity Efficiency in the New Canadian Wholesale Payments System
Creators: name: Rivadeneyra, Francisco
name: Zhang, Nellie
Publisher: name: Bank of Canada
Year: 2022

description: We study the impact of the Bank of Canada’s choice of settlement mechanism in Lynx on participant behaviors, liquidity usage, payment delays and the overall operational efficiency of the new system.

description: Nous étudions l’incidence du mécanisme de règlement choisi par la Banque du Canada pour le système Lynx sur les comportements des participants, l’utilisation des liquidités, les retards de paiement et l’efficacité opérationnelle globale du nouveau système.
HELAS and MadGraph with spin-3/2 particles
Creators: name: Hagiwara, K.
name: Mawatari, K.
name: Takaesu, Y.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Fortran subroutines to calculate helicity amplitudes with massive spin-3/2 particles, such as massive gravitinos, which couple to the standard model and supersymmetric particles via the supercurrent, are added to the HELAS (HELicity Amplitude Subroutines) library. They are coded in such a way that arbitrary amplitudes with external gravitinos can be generated automatically by MadGraph, after slight modifications. All the codes have been tested carefully by making use of the gauge invariance of the helicity amplitudes.
description: 12 pages, 4 figures; sections rearranged, typos corrected, version to appear in EPJC
Birth and Growth of Two-dimensional Universe
Creators: name: Yukawa, Tetsuyuki
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A master equation for the evolution of two-dimensional universe is derived based on the simplicial quantum gravity regarding the evolution as the Markov process of a space-time lattice. Three typical phases, expanding, elongating and collapsing phase, which have been found in the numerical simulation, are studied together with their boundaries, analytically. Asymptotic solutions of the evolution equation for statistical quantities, such as averaged area, boundary length, and correlation of fluctuations, are obtained for each phase and boundary.After introducing a physical time the cosmological significance of each phase is discussed.
The Accuracy of Perturbative Master Equations
Creators: name: Fleming, Chris H.
name: Cummings, Nick I.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider open quantum systems with dynamics described by master equations that have perturbative expansions in the system-environment interaction. We show that, contrary to intuition, full-time solutions of order-2n accuracy require an order-(2n+2) master equation. We give two examples of such inaccuracies in the solutions to an order-2n master equation: order-2n inaccuracies in the steady state of the system and order-2n positivity violations, and we show how these arise in a specific example for which exact solutions are available. This result has a wide-ranging impact on the validity of coupling (or friction) sensitive results derived from second-order convolutionless, Nakajima-Zwanzig, Redfield, and Born-Markov master equations.
description: 6 pages, 0 figures; v2 updated references; v3 updated references, extension to full-time and nonlocal regimes
An Examination of the Traffic Consultants Role in a Changing Regulatory Environment
Creators: name: Cavinato, Joseph L.
name: Kogon, Gary B.
name: Cavinato, Joseph L.
name: Kogon, Gary B.
Publisher: name: Unknown
Year: 1980
Subjects: Public Economics

description: Presented at the 21st Transportation Research Forum meeting, Oct. 27-29, 1980, Philadelphia, PA
Multicomponent fluids of hard hyperspheres in odd dimensions
Creators: name: Rohrmann, René D.
name: Santos, Andrés
Publisher: name: arXiv
Year: 2010
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Mixtures of hard hyperspheres in odd space dimensionalities are studied with an analytical approximation method. This technique is based on the so-called Rational Function Approximation and provides a procedure for evaluating equations of state, structure factors, radial distribution functions, and direct correlations functions of additive mixtures of hard hyperspheres with any number of components and in arbitrary odd-dimension space. The method gives the exact solution of the Ornstein--Zernike equation coupled with the Percus--Yevick closure, thus extending to arbitrary odd dimension the solution for hard-sphere mixtures [J. L. Lebowitz, Phys.\ Rev.\ \textbf{133}, 895 (1964)]. Explicit evaluations for binary mixtures in five dimensions are performed. The results are compared with computer simulations and a good agreement is found.
description: 16 pages, 8 figures; v2: slight change of notation
The Equivalence Theorem in Effective Theories
Creators: name: Chicherin, D.
name: Gorbenko, V.
name: Vereshagin, V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The famous equivalence theorem is reexamined in order to make it applicable to the case of intrinsically quantum infinite-component effective theories. We slightly modify the formulation of this theorem and prove it basing on the notion of generating functional for Green functions. This allows one to trace (directly in terms of graphs) the mutual cancelation of different groups of contributions.
description: 21 pages, 7 figures; v2: Section 4 is modified, plus minor corrections in other sections, version accepted for publication in PRD
Genomics of western redcedar (Thuja plicata)
Creators: name: Shalev, Tal James
Publisher: name: University of British Columbia
Year: 2022

description: Western redcedar (WRC; Thuja plicata) is an ecologically, culturally, and economically important tree species. It is a key successional tree species and a major component of old-growth stands in its range, has been revered and used by First Nations of the Pacific Northwest of North America for millennia, and represents a $1.1B industry. WRC is unique among conifers in that it readily self-fertilizes (selfs) and does not appear to be affected by inbreeding depression for most fitness traits. Further, its tolerance of environmental stressors makes it a focal tree species for future range expansion due to climate change. Development of genomic resources and methods for conifers and other trees has become fundamental over the last decade for better understanding their biology and expediting tree improvement programs for growth and defense traits. As operational forestry shifts from old-growth to second-growth harvesting, using genomic data to better understand the population genetics, demography, and important growth and defense traits of WRC is essential. In this thesis I present novel genomic resources for WRC. These are then used to explore genetic diversity, mating system, and terpene chemistry traits associated with defense against ungulate browsing and fungal pathogens. I found that the genetic diversity of WRC is exceptionally low for a continuous tree species of its range size, likely due to range expansion from a single glacial refugium and its unique self-compatibility. Analysis of selfing lines revealed that WRC’s adaptability and responsiveness to selection may be due to balancing selection as a result of its demography. Further, not only does WRC show limited inbreeding depression for growth, terpene chemistry, or dendrochronological traits, but appropriate selection intensity can mitigate the effects of inbreeding for growth traits. I found that terpene synthase (TPS) genes in WRC occupy a unique clade from other conifers, and that many loci were associated with terpene chemistry traits in WRC, with substantial variation in effect sizes of loci between different traits. This work serves as a foundation for future genomic research, and provides fundamental data for improving breeding prospects for traits of interest in WRC.
Renormalization group flow, competing phases, and the structure of superconducting gap in multi-band models of Iron based superconductors
Creators: name: Maiti, Saurabh
name: Chubukov, Andrey V.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We perform an analytical renormalization group (RG) study to address the role of Coulomb repulsion, the competition between extended s-wave superconducting order (s+-) and the spin-density wave (SDW) order and the angular dependence of the superconducting gap in multi-pocket models of Iron based superconductors. Previous analytic RG studies considered a toy model of one hole and one electron pocket. We consider more realistic models of two electron pockets and either two or three hole pockets, and also incorporate the angular dependence of interaction. We neglect for simplicity one of the two hole pockets centered at k=0, which is less nested with electron pockets, i.e., consider 3-pocket and 4-pocket models. In a toy 2-pocket model, SDW order always wins over s+- order at perfect nesting, and s+- order only appears at a finite doping, and only if RG flow extends long enough to overcome intra-pocket Coulomb repulsion. For multi-pocket models, we find two new effects. First, there always exists an attractive component of the interaction in s+- channel, such that the system necessary becomes a superconductor once it overcomes the competition from the SDW state. Second, in 3-pocket case (but not in 4-pocket case), there are situations when s+- order wins over SDW order even for perfect nesting, suggesting that SDW order is not a necessary pre-condition for the s+- order. Our results are in good agreement with recent numerical functional RG studies by Thomale et al. [arXiv:1002.3599]
description: 24 pp, 25 figures, published in PRB, uploading published version
Reactive transport modelling of greenhouse gas cycling and emissions from macroporous agricultural soils
Creators: name: Jia, Mengqi
Publisher: name: University of British Columbia
Year: 2022

description: Agricultural lands are important anthropogenic sources of greenhouse gases (GHG) and play a vital role in affecting global climate change. GHGs (i.e., CO₂, N₂O and CH₄) are all produced (or consumed) as a result of microbial processes; however, the size of the concentrations and fluxes depends heavily on soil structure characteristics. Macroporous agricultural soils have a multitude of pore domains (e.g., macropores, soil matrix, soil aggregates) leading to varying degrees of fluid flow, solute and gas transport. Consequently, a spectrum of biogeochemical C-N processes may occur in macroporous soils that collectively, and coupled with flow and mass transport, determine GHG cycling. In this work, various modeling approaches were developed to assess the mechanisms of GHG production, consumption, transport and emissions, and interpret the simulation results in the context of observations at a field site in Ontario, Canada, featuring macroporous agricultural soil. The modeling approaches include a classical uniform reactive transport model, a dual-permeability reactive transport model with an emphasis on non-equilibrium gas transport and exchange, a discrete macropore model, and a more complex hybrid multi-domain model. Simulation results from all modeling approaches suggest that spatial distributions (e.g., hotspots) of GHG emissions can be attributed to differences in soil characteristics, soil nutrient supply, and organic C availability, whereas short- (hot moments) and long-term (seasonal) temporal variations are strongly affected by environmental factors including seasonal temperature and in-season acute precipitation events. In addition, results showed that all modeling approaches were successful in reproducing observed spatial and long-term temporal variations in pore gas GHG concentrations and fluxes; however, the hybrid multi-domain model clearly improved the simulation of hot moment N₂O emissions related to acute precipitation events compared to other approaches, which highlights the potential of improving the simulation of N₂O hot moments through accounting for three interconnected subdomains. The strengths and weaknesses of modeling approaches for simulating GHG cycling and emissions from macroporous agricultural soil were compared and evaluated. All modeling approaches showed promise for future studies with the aim to develop a more complete understanding of how complex soil structure affects the spatiotemporal variations of GHG cycling from macroporous agricultural soils.
Carolina von Deschwanden (1794-1870) an Joseph Wolfgang von Deschwanden (1819-1866)
Creators: name: Deschwanden, Carolina von
name: Deschwanden, Karl von
name: Deschwanden, Theodor von
Publisher: name: [s.n.]
Year: 1838

description: Brief aus Stans.
Briefzusatz von Karl von Deschwanden, von Theodor von Deschwanden und von Ad. Schnyder
Regularizations of general singular integral operators
Creators: name: Liaw, Constanze
name: Treil, Sergei
Publisher: name: arXiv
Year: 2010
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: In the theory of singular integral operators significant effort is often required to rigorously define such an operator. This is due to the fact that the kernels of such operators are not locally integrable on the diagonal, so the integral formally defining the operator or its bilinear form is not well defined (the integrand is not in L^1) even for nice functions. However, since the kernel only has singularities on the diagonal, the bilinear form is well defined say for bounded compactly supported functions with separated supports. One of the standard ways to interpret the boundedness of a singular integral operators is to consider regularized kernels, where the cut-off function is zero in a neighborhood of the origin, so the corresponding regularized operators with kernel are well defined (at least on a dense set). Then one can ask about uniform boundedness of the regularized operators. For the standard regularizations one usually considers truncated operators. The main result of the paper is that for a wide class of singular integral operators (including the classical Calderon-Zygmund operators in non-homogeneous two weight settings), the L^p boundedness of the bilinear form on the compactly supported functions with separated supports (the so-called restricted L^p boundedness) implies the uniform L^p-boundedness of regularized operators for any reasonable choice of a smooth cut-off of the kernel. If the kernel satisfies some additional assumptions (which are satisfied for classical singular integral operators like Hilbert Transform, Cauchy Transform, Ahlfors--Beurling Transform, Generalized Riesz Transforms), then the restricted L^p boundedness also implies the uniform L^p boundedness of the classical truncated operators.
description: Introduced factor 1/2 in argument section 3.1, results unchanged
An Approach to Stimulating Industrial Development by Means of Intermodal Freight Transportation Projects
Creators: name: Jones, Paul S.
name: Sharp, Gunther P.
name: Jones, Paul S.
name: Sharp, Gunther P.
Publisher: name: Unknown
Year: 1980
Subjects: Public Economics

description: Presented at the 21st Transportation Research Forum meeting, Oct. 27-29, 1980, Philadelphia, PA
Violation of a Leggett-Garg inequality with ideal non-invasive measurements
Creators: name: Knee, George C.
name: Simmons, Stephanie
name: Gauger, Erik M.
name: Morton, John J. L.
name: Riemann, Helge
name: Abrosimov, Nikolai V.
name: Becker, Peter
name: Pohl, Hans-Joachim
name: Itoh, Kohei M.
name: Thewalt, Mike L. W.
name: Briggs, G. Andrew D.
name: Benjamin, Simon C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The quantum superposition principle states that an entity can exist in two different states simultaneously, counter to our 'classical' intuition. Is it possible to understand a given system's behaviour without such a concept? A test designed by Leggett and Garg can rule out this possibility. The test, originally intended for macroscopic objects, has been implemented in various systems. However to-date no experiment has employed the 'ideal negative result' measurements that are required for the most robust test. Here we introduce a general protocol for these special measurements using an ancillary system which acts as a local measuring device but which need not be perfectly prepared. We report an experimental realisation using spin-bearing phosphorus impurities in silicon. The results demonstrate the necessity of a non-classical picture for this class of microscopic system. Our procedure can be applied to systems of any size, whether individually controlled or in a spatial ensemble.
description: 6+4 pages. Supplementary Methods section included
Extremal black holes, gravitational entropy and nonstationary metric fields
Creators: name: Edery, Ariel
name: Constantineau, Benjamin
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that extremal black holes have zero entropy by pointing out a simple fact: they are time-independent throughout the spacetime and correspond to a single classical microstate. We show that non-extremal black holes, including the Schwarzschild black hole, contain a region hidden behind the event horizon where all their Killing vectors are spacelike. This region is nonstationary and the time $t$ labels a continuous set of classical microstates, the phase space $[\,h_{ab}(t), P^{ab}(t)\,]$, where $h_{ab}$ is a three-metric induced on a spacelike hypersurface $Σ_t$ and $P^{ab}$ is its momentum conjugate. We determine explicitly the phase space in the interior region of the Schwarzschild black hole. We identify its entropy as a measure of an outside observer's ignorance of the classical microstates in the interior since the parameter $t$ which labels the states lies anywhere between 0 and 2M. We provide numerical evidence from recent simulations of gravitational collapse in isotropic coordinates that the entropy of the Schwarzschild black hole stems from the region inside and near the event horizon where the metric fields are nonstationary; the rest of the spacetime, which is static, makes no contribution. Extremal black holes have an event horizon but in contrast to non-extremal black holes, their extended spacetimes do not possess a bifurcate Killing horizon. This is consistent with the fact that extremal black holes are time-independent and therefore have no distinct time-reverse.
description: 12 pages, 2 figures. To appear in Class. and Quant. Gravity. Based on an essay selected for honorable mention in the 2010 gravity research foundation essay competition
An Affine-Invariant Sampler for Exoplanet Fitting and Discovery in Radial Velocity Data
Creators: name: Hou, Fengji
name: Goodman, Jonathan
name: Hogg, David W.
name: Weare, Jonathan
name: Schwab, Christian
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Markov Chain Monte Carlo (MCMC) proves to be powerful for Bayesian inference and in particular for exoplanet radial velocity fitting because MCMC provides more statistical information and makes better use of data than common approaches like chi-square fitting. However, the non-linear density functions encountered in these problems can make MCMC time-consuming. In this paper, we apply an ensemble sampler respecting affine invariance to orbital parameter extraction from radial velocity data. This new sampler has only one free parameter, and it does not require much tuning for good performance, which is important for automatization. The autocorrelation time of this sampler is approximately the same for all parameters and far smaller than Metropolis-Hastings, which means it requires many fewer function calls to produce the same number of independent samples. The affine-invariant sampler speeds up MCMC by hundreds of times compared with Metropolis-Hastings in the same computing situation. This novel sampler would be ideal for projects involving large datasets such as statistical investigations of planet distribution. The biggest obstacle to ensemble samplers is the existence of multiple local optima; we present a clustering technique to deal with local optima by clustering based on the likelihood of the walkers in the ensemble. We demonstrate the effectiveness of the sampler on real radial velocity data.
description: 24 pages, 7 figures, accepted to ApJ
Many-body spin interactions and the ground state of a dense Rydberg lattice gas
Creators: name: Lesanovsky, I.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study a one-dimensional atomic lattice gas in which Rydberg atoms are excited by a laser and whose external dynamics is frozen. We identify a parameter regime in which the Hamiltonian is well-approximated by a spin Hamiltonian with quasi-local many-body interactions which possesses an exact analytic ground state solution. This state is a superposition of all states of the system that are compatible with an interaction induced constraint weighted by a fugacity. We perform a detailed analysis of this state which exhibits a cross-over between a paramagnetic phase with short-ranged correlations and a crystal. This study also leads us to a class of spin models with many-body interactions that permit an analytic ground state solution.
The CDF dijet excess from intrinsic quarks
Creators: name: He, Xiao-Gang
name: Ma, Bo-Qiang
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The CDF collaboration reported an excess in the production of two jets in association with a $W$. We discuss constraints on possible new particle state interpretations of this excess. The fact of no statistically significant deviation from the SM expectation for {$Z$+dijet} events in CDF data disfavors the new particle explanation. We show that the nucleon intrinsic strange quarks provide an important contribution to the $W$ boson production in association with a single top quark production. Such {$W$+t} single top quark production can contribute to the CDF {$W$+dijet} excess, thus the nucleon intrinsic quarks can provide a possible explanation to the CDF excess in {$W$+dijet} but not in {$Z$+dijet} events.
description: 4 latex pages, 1 figure. Version for journal publication
Semiclassical Propagation of Coherent States for the Hartree equation
Creators: name: Athanassoulis, Agissilaos
name: Paul, Thierry
name: Pezzotti, Federica
name: Pulvirenti, Mario
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this paper we consider the nonlinear Hartree equation in presence of a given external potential, for an initial coherent state. Under suitable smoothness assumptions, we approximate the solution in terms of a time dependent coherent state, whose phase and amplitude can be determined by a classical flow. The error can be estimated in $L^2$ by $C \sqrt {\var}$, $\var$ being the Planck constant. Finally we present a full formal asymptotic expansion.
Measurement of Z boson production in proton-protonand heavy-ion collisions in CMS
Creators: name: Bermudez Martinez, Armando
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2019

description: XVII Workshop on Nuclear Physics, WONP 2019, Havana, Cuba, 1 Apr 2019 - 5 Apr 2019
Wilson loop remainder function for null polygons in the limit of self-crossing
Creators: name: Dorn, Harald
name: Wuttke, Sebastian
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The remainder function of Wilson loops for null polygons becomes divergent if two vertices approach each other. We apply RG techniques to the limiting configuration of a contour with self-intersection. As a result for the two loop remainder we find a quadratic divergence in the logarithm of the distance between the two approaching vertices. The divergence is multiplied by a factor, which is given by a pure number plus the product of two logarithms of cross-ratios characterising the conformal geometry of the self-crossing.
description: 12 pages, 2 figures, typos corrected, references added, note added
Bilayer graphene inclusions in rotational-stacked multilayer epitaxial graphene
Creators: name: Orlita, M.
name: Faugeras, C.
name: Borysiuk, J.
name: Baranowski, J. M.
name: Strupinski, W.
name: Sprinkle, M.
name: Berger, C.
name: de Heer, W. A.
name: Basko, D. M.
name: Martinez, G.
name: Potemski, M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Additional component in multi-layer epitaxial graphene grown on the C-terminated surface of SiC, which exhibits the characteristic electronic properties of a AB-stacked graphene bilayer, is identified in magneto-optical response of this material. We show that these inclusions represent a well-defined platform for accurate magneto-spectroscopy of unperturbed graphene bilayers.
description: 5 pages, 2 figures, to appear in Phys. Rev. B
Carolina von Deschwanden (1794-1870) an Joseph Wolfgang von Deschwanden (1819-1866) und an Karl von Deschwanden (1823-1889)
Creators: name: Deschwanden, Carolina von
name: Deschwanden von, verheiratete Zürcher, Anna
Publisher: name: [s.n.]
Year: 1841

description: Brief aus Stans.
Briefzusatz von Anna von Deschwanden
Machine learning assisted Raman spectroscopy for monitoring radiation treatment response in cancer cells and tissues.
Creators: name: Deng, Xinchen
Publisher: name: University of British Columbia
Year: 2022

description: Radiation therapy aims to kill tumour cells while sparing healthy tissue. However, a current bottleneck in radiation therapy remains in the area of personalization of radiation dose to match inherent individual tumour and patient radiosensitivity. This dissertation is devoted to developing a radiation response monitoring tool by combining Raman spectroscopy (RS) with machine learning methods to monitor radiation response in cellular and tissue materials. RS is a non-invasive optical technique that provides detailed spectroscopic information on the molecular composition of the sample and can potentially be used to monitor biological radiation response in both healthy and cancerous tissues. This dissertation has three main objectives. The first objective is to apply and evaluate the non-negative matrix factorization (NMF) performance as a dimension reduction tool in RS data analysis. This dissertation shows that the non-negativity constraint of NMF helps the interpretation of decomposed chemical bases. NMF identified new radiation response biomarker such as lipids that were not previously discovered. The second objective is to combine a semi-supervised dimension technique, GBR-NMF, with a classifier method such as random forest (RF) as a data analytical framework (GBR-NMF-RF) to classify the tumour samples into radiation response groups. It is shown that GBR-NMF-RF helped RS identify radiation response biomarkers such as glycogen, lipids, DNA, and amino acids in cancer cell samples. The third objective is to investigate the performance of GBR-NMF-RF in different types of Raman samples (e.g., cells and tissues). Using RS and GBR-NMF-RF, radiation responses are compared in data sets acquired from cancer cells and tissue xenografts from the murine model. It is shown that GBR-NMF-RF and RS also discovered correlations between biochemicals such as glycogen and amino acids with hypoxia in RS xenograft tissue samples. In conclusion, the work conducted in this dissertation demonstrates the potential of RS, combined with machine learning methods, to be used as a tool to monitor radiation response in cellular and tissue environments. These tools may aid in the overall goal of personalized radiation therapy.
Event-Triggered Non-Linear Control of Offshore MMC Grids for Asymmetrical AC Faults
Creators: name: Cherat, Naajein
name: Nougain, Vaibhav
name: Majstorović, Milovan
name: Palensky, Peter
name: Lekić, Aleksandra
Publisher: name: arXiv
Year: 2024
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Fault ride-through capability studies of MMC-HVDC connected wind power plants have focused primarily on the DC link and onshore AC grid faults. Offshore AC faults, mainly asymmetrical faults have not gained much attention in the literature despite being included in the future development at national levels in the ENTSO-E HVDC code. The proposed work gives an event-triggered control to stabilize the system once the offshore AC fault has occurred, identified, and isolated. Different types of control actions such as proportional-integral (PI) controller and super-twisted sliding mode control (STSMC) are used to smoothly transition the post-fault system to a new steady state operating point by suppressing the negative sequence control. Initially, the effect of a negative sequence current control scheme on the transient behavior of the power system with a PI controller is discussed in this paper. Further, a non-linear control strategy (STSMC) is proposed which gives quicker convergence of the system post-fault in comparison to PI control action. These post-fault control operations are only triggered in the presence of a fault in the system, i.e., they are event-triggered. The validity of the proposed strategy is demonstrated by simulation on a $\pm$525 kV, three-terminal meshed MMC-HVDC system model in Real Time Digital Simulator (RTDS).
Rank Minimization over Finite Fields: Fundamental Limits and Coding-Theoretic Interpretations
Creators: name: Tan, Vincent Y. F.
name: Balzano, Laura
name: Draper, Stark C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Information Theory (cs.IT)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: This paper establishes information-theoretic limits in estimating a finite field low-rank matrix given random linear measurements of it. These linear measurements are obtained by taking inner products of the low-rank matrix with random sensing matrices. Necessary and sufficient conditions on the number of measurements required are provided. It is shown that these conditions are sharp and the minimum-rank decoder is asymptotically optimal. The reliability function of this decoder is also derived by appealing to de Caen's lower bound on the probability of a union. The sufficient condition also holds when the sensing matrices are sparse - a scenario that may be amenable to efficient decoding. More precisely, it is shown that if the n\times n-sensing matrices contain, on average, Ω(nlog n) entries, the number of measurements required is the same as that when the sensing matrices are dense and contain entries drawn uniformly at random from the field. Analogies are drawn between the above results and rank-metric codes in the coding theory literature. In fact, we are also strongly motivated by understanding when minimum rank distance decoding of random rank-metric codes succeeds. To this end, we derive distance properties of equiprobable and sparse rank-metric codes. These distance properties provide a precise geometric interpretation of the fact that the sparse ensemble requires as few measurements as the dense one. Finally, we provide a non-exhaustive procedure to search for the unknown low-rank matrix.
description: Accepted to the IEEE Transactions on Information Theory; Presented at IEEE International Symposium on Information Theory (ISIT) 2011
Evolution of the CKM Matrix in the Universal Extra Dimension Model
Creators: name: Cornell, A. S.
name: Liu, Lu-Xin
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The evolution of the Cabibbo-Kobayashi-Maskawa matrix and the quark Yukawa couplings is performed for the one-loop renormalization group equations in the universal extra dimension model. It is found that the evolution of mixing angles and the CP violation measure J may rapidly vary in the presence of the Kaluza-Klein modes, and this variation becomes dramatic as the energy approaches the unification scale.
description: 10 pages, 4 figures
Carolina von Deschwanden (1794-1870) an Karl von Deschwanden (1823-1889) und an Joseph Wolfgang von Deschwanden (1819-1866)
Creators: name: Deschwanden, Carolina von
name: Deschwanden von, verheiratete Zürcher, Anna
Publisher: name: [s.n.]
Year: 1839

description: Brief aus Stans.
Briefzusatz von Anna von Deschwanden
Adaptive Single-Terminal Fault Location for DC Microgrids
Creators: name: Nougain, Vaibhav
name: Mishra, Sukumar
name: Rodriguez-Bernuz, Joan-Marc
name: Junyent-Ferre, Adria
name: Shekhar, Aditya
name: Lekic, Aleksandra
Publisher: name: arXiv
Year: 2024
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Identifying faulty lines and their accurate location is key for rapidly restoring distribution systems. This will become a greater challenge as the penetration of power electronics increases, and contingencies are seen across larger areas. This paper proposes a single terminal methodology (i.e., no communication involved) that is robust to variations of key parameters (e.g., sampling frequency, system parameters, etc.) and performs particularly well for low resistance faults that constitute the majority of faults in low voltage DC systems. The proposed method uses local measurements to estimate the current caused by the other terminals affected by the contingency. This mimics the strategy followed by double terminal methods that require communications and decouples the accuracy of the methodology from the fault resistance. The algorithm takes consecutive voltage and current samples, including the estimated current of the other terminal, into the analysis. This mathematical methodology results in a better accuracy than other single-terminal approaches found in the literature. The robustness of the proposed strategy against different fault resistances and locations is demonstrated using MATLAB simulations.
description: SEST 2024
Carolina von Deschwanden (1794-1870) an Joseph Wolfgang von Deschwanden (1819-1866) und an Karl von Deschwanden (1823-1889)
Creators: name: Deschwanden, Carolina von
name: Deschwanden von, verheiratete Zürcher, Anna
Publisher: name: [s.n.]
Year: 1840

description: Brief aus Stans.
Briefzusatz von Anna von Deschwanden