cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Energy Build-up and Triggering Leading to a M1.5 Flare on 1 August 2014
Creators: name: Liu, S.
name: Su, J. T.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The energy storage and trigger mechanisms of solar flares are important for understanding of solar activity. We analyzed multi-wavelength observations of a M1.5 flare on 1 August 2014, in active region NOAA 12127 (SOL2014-08-01T18:13). There are evident large scale sunspot rotations in positive magnetic field of the main energy release region before the eruption; the rotations contain both clockwise and counter-clockwise directions. Injection of magnetic helicity from the photosphere prior to the flare. The sign of the helicity injection is reversed after the flare. It is found that both persistent larger scale ($\approx$ one day) and impulse smaller scale ($\approx$ one to two hours) magnetic-flux emergences are associated with the flare. We conclude that larger-scale flux emergence, helicity injection and sunspot rotation contribute to the energy build up, while the small-scale magnetic-flux emergence plays crucial role in triggering the flare.
description: 10 figures 16 pages
The Construction of a Quantum Markov Partition
Creators: name: Vallejos, Raul O.
name: Saraceno, Marcos
Publisher: name: arXiv
Year: 1999
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We present a method for constructing a quantum Markov partition. Its elements are obtained by quantizing the characteristic function of the classical rectangles. The result is a set of quantum operators which behave asymptotically as projectors over the classical rectangles except from edge and corner effects. We investigate their spectral properties and different methods of construction. The quantum partition is shown to induce a symbolic decomposition of the quantum evolution operator. In particular, an exact expression for the traces of the propagator is obtained having the same structure as Gutzwiller periodic orbit sum.
description: 9 latex pages including 7 ps figures
A Tensor Train Continuous Time Solver for Quantum Impurity Models
Creators: name: Erpenbeck, A.
name: Lin, W. -T.
name: Blommel, T.
name: Zhang, L.
name: Iskakov, S.
name: Bernheimer, L.
name: Núñez-Fernández, Y.
name: Cohen, G.
name: Parcollet, O.
name: Waintal, X.
name: Gull, E.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The simulation of strongly correlated quantum impurity models is a significant challenge in modern condensed matter physics that has multiple important applications. Thus far, the most successful methods for approaching this challenge involve Monte Carlo techniques that accurately and reliably sample perturbative expansions to any order. However, the cost of obtaining high precision through these methods is high. Recently, tensor train decomposition techniques have been developed as an alternative to Monte Carlo integration. In this study, we apply these techniques to the single-impurity Anderson model at equilibrium by calculating the systematic expansion in power of the hybridization of the impurity with the bath. We demonstrate the performance of the method in a paradigmatic application, examining the first-order phase transition on the infinite dimensional Bethe lattice, which can be mapped to an impurity model through dynamical mean field theory. Our results indicate that using tensor train decomposition schemes allows the calculation of finite-temperature Green's functions and thermodynamic observables with unprecedented accuracy. The methodology holds promise for future applications to frustrated multi-orbital systems, using a combination of partially summed series with other techniques pioneered in diagrammatic and continuous-time quantum Monte Carlo.
Light escape cones in local reference frames of Kerr-de Sitter black hole spacetimes and related black hole shadows
Creators: name: Stuchlík, Zdeněk
name: Charbulák, Daniel
name: Schee, Jan
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We construct the light escape cones of isotropic spot sources of radiation residing in special classes of reference frames in the Kerr-de Sitter (KdS) black hole spacetimes, namely, in the fundamental class of 'non-geodesic' locally non-rotating reference frames (LNRFs), and two classes of 'geodesic' frames, the radial geodesic frames (RGFs), both falling and escaping, and the frames related to the circular geodesic orbits (CGFs). We compare the cones constructed in a given position for the LNRFs, RGFs, and CGFs. We have shown that the photons locally counter-rotating relative to LNRFs with positive impact parameter and negative covariant energy are confined to the ergosphere region. Finally, we demonstrate that the light escaping cones govern the shadows of black holes located in front of a radiating screen, as seen by the observers in the considered frames. For shadows related to distant static observers the LNRFs are relevant.
description: 58 pages, 136 figures
Magnetism and Metallicity in Moiré Transition Metal Dichalcogenides
Creators: name: Tscheppe, Patrick
name: Zang, Jiawei
name: Klett, Marcel
name: Karakuzu, Seher
name: Celarier, Armelle
name: Cheng, Zhengqian
name: Marianetti, Chris A.
name: Maier, Thomas A.
name: Ferrero, Michel
name: Millis, Andrew J.
name: Schäfer, Thomas
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The ability to control the properties of twisted bilayer transition metal dichalcogenides in situ makes them an ideal platform for investigating the interplay of strong correlations and geometric frustration. Of particular interest are the low energy scales, which make it possible to experimentally access both temperature and magnetic fields that are of the order of the bandwidth or the correlation scale. In this manuscript we analyze the moiré Hubbard model, believed to describe the low energy physics of an important subclass of the twisted bilayer compounds. We establish its magnetic and the metal-insulator phase diagram for the full range of magnetic fields up to the fully spin polarized state. We find a rich phase diagram including fully and partially polarized insulating and metallic phases of which we determine the interplay of magnetic order, Zeeman-field, and metallicity, and make connection to recent experiments.
description: 7+10 pages, 4+9 figures
Additional file 1: of Written narratives from immigrants following a prenatal diagnosis: qualitative exploratory study
Creators: name: Carlsson, Tommy
name: Banaz Balbas
name: Mattsson, Elisabet
Publisher: name: figshare
Year: 2019
Subjects: subject: Space Science
subject: Cell Biology
subject: Molecular Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Developmental Biology
subject: Science Policy

description: Questions in the web-based tool. The file includes all questions in the web-based tool that the respondents answered. (PDF 42 kb)
Centre for Sustainable Information Management : a business plan
Creators: name: Svanhill, Jeff
name: Hume, Jennifer
name: Zhuang, Liya
name: Sih, Perry
name: Zhang, Ryan
Publisher: name: The University of British Columbia
Year: 2012

description: The University of British Columbia (UBC) Vancouver has grown immensely in the past ten years, as evidenced by its visible densification. Concurrently, the volume of documents produced by UBC Vancouver has grown more than eight times (Doyle A. , 2009). Over 40,000 boxes of documents are stored by the faculties, departments and schools at UBC Vancouver. The question is: where are these documents stored? Currently there are two locations: on-campus in store-rooms, basements and attics and off-campus at privately owned facilities, Iron Mountain (IM) and BC Records Management Services (BCRMS). Unfortunately, there are several problems with these locations. On campus storage space is valuable and in short supply. This space has value as potential classroom or research space. In addition, many of these documents are not well managed; for instance, some have expired, need to be destroyed or may be valuable archives to be retained. Off campus storage is expensive. For example, UBC spent nearly $190,000 on document storage at IM (Wilson, 2011) in 2010. Furthermore, storing documents off-campus at facilities owned by US companies (like IM) makes the documents susceptible to inspection by Homeland Security. Off-campus storage is also not sustainable. Over 100 tonnes of greenhouse gas emissions is produced by off-campus storage (Jackson, et al. 2009). The solution to these problems is for UBC to construct their own information management and storage facility: the UBC Centre for Sustainable Information Management (CSIM). The CSIM will provide all UBC Vancouver schools, faculties, and departments with a storage facility that is safe, convenient, cost-efficient, sustainable, and knowledgeable of UBC record policies. The CSIM will act as a world-leading research centre for records/documents management.Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Black Hole Data via a Kerr-Schild Approach
Creators: name: Bishop, Nigel T.
name: Isaacson, Richard
name: Maharaj, Manoj
name: Winicour, Jeffrey
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a new approach for setting initial Cauchy data for multiple black hole spacetimes. The method is based upon adopting an initially Kerr-Schild form of the metric. In the case of non-spinning holes, the constraint equations take a simple hierarchical form which is amenable to direct numerical integration. The feasibility of this approach is demonstrated by solving analytically the problem of initial data in a perturbed Schwarzschild geometry.
description: 13 pages, RevTeX format
The Origins of Young Stars in the Direction of the Leading Arm of the Magellanic Stream: Abundances, Kinematics, and Orbits
Creators: name: Zhang, Lan
name: Casetti-Dinescu, Dana I.
name: Bidin, Christian Moni
name: Mendez, Rene A.
name: Girard, Terrence M.
name: Vieira, Katherine
name: Korchagin, Vladimir I.
name: van Altena, William F.
name: Zhao, Gang
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We explore the origins of the young B-type stars found by Casetti-Dinescu et al.(2014) at the outskirts of the Milky-Way disk in the sky region of Leading Arm of the Magellanic Stream. High-resolution spectroscopic observations made with the MIKE instrument on the Magellan Clay 6.5m telescope for nine stars are added to the previous sample analyzed by Zhang et al. (2017). We compile a sample of fifteen young stars with well-determined stellar types, ages, abundances and kinematics. With proper motions from Gaia DR2 we also derive orbits in a realistic Milky-Way potential. We find that our previous radial-velocity selected LA candidates have substantial orbital angular momentum. The substantial amount of rotational component for these stars is in contrast with the near-polar Magellanic orbit, thus rendering these stars unlikely members of the LA. There are four large orbital-energy stars in our sample. The highest orbital-energy one has an age shorter than the time to disk crossing, with a birthplace $z=2.5$~kpc and $R_{\rm GC}\sim 28$~kpc. Therefore, the origin of this star is uncertain. The remaining three stars have disk runaway origin with birthplaces between 12 and 25 kpc from the Galactic center. Also, the most energetic stars are more metal poor ([Mg/H] =$-0.50\pm0.07$) and with larger He scatter ($σ_{\rm [He/H]} = 0.72$) than the inner disk ones ([Mg/H] $=0.12\pm0.36$, $σ_{\rm [He/H]} = 0.15$). While the former group's abundance is compatible with that of the Large Magellanic Cloud, it could also reflect the metallicity gradient of the MW disk and their runaway status via different runaway mechanisms.
description: 58 pages, 17 figures, 7 tables. Accepted for publication in ApJ
Remaining Reserve Determination with Boundary Dominated "b" Approach Method in Gas Well
Creators: name: Kaesti, Edgie Yuda
name: Widyaningsih, Ratna
name: Prapcoyo, Hari
name: Y, Muhammad Zakiy
name: Kuncoro, Aditya Satrio
name: Nuraeni, Nia
Publisher: name: Zenodo
Year: 2024

description: This material has been presented on 3rd International Conference on Advanced Research in Engineering and Technology 2024 October 23 - 24, 2024.
Time-domain Compressive Beamforming for Medical Ultrasound Imaging
Creators: David, Guillaume
Publisher: name: Columbia University
Year: 2016
Subjects: Beamforming
Diagnostic ultrasonic imaging
Ultrasonics in medicine
Compressed sensing (Telecommunication)
Biomedical engineering
Physics
Sound

description: Over the past 10 years, Compressive Sensing has gained a lot of visibility from the medical imaging research community. The most compelling feature for the use of Compressive Sensing is its ability to perform perfect reconstructions of under-sampled signals using l1-minimization. Of course, that counter-intuitive feature has a cost. The lacking information is compensated for by a priori knowledge of the signal under certain mathematical conditions. This technology is currently used in some commercial MRI scanners to increase the acquisition rate hence decreasing discomfort for the patient while increasing patient turnover. For echography, the applications could go from fast 3D echocardiography to simplified, cheaper echography systems.
      Real-time ultrasound imaging scanners have been available for nearly 50 years. During these 50 years of existence, much has changed in their architecture, electronics, and technologies. However one component remains present: the beamformer. From analog beamformers to software beamformers, the technology has evolved and brought much diversity to the world of beam formation. Currently, most commercial scanners use several focalized ultrasonic pulses to probe tissue. The time between two consecutive focalized pulses is not compressible, limiting the frame rate. Indeed, one must wait for a pulse to propagate back and forth from the probe to the deepest point imaged before firing a new pulse.
      In this work, we propose to outline the development of a novel software beamforming technique that uses Compressive Sensing. Time-domain Compressive Beamforming (t-CBF) uses computational models and regularization to reconstruct de-cluttered ultrasound images. One of the main features of t-CBF is its use of only one transmit wave to insonify the tissue. Single-wave imaging brings high frame rates to the modality, for example allowing a physician to see precisely the movements of the heart walls or valves during a heart cycle. t-CBF takes into account the geometry of the probe as well as its physical parameters to improve resolution and attenuate artifacts commonly seen in single-wave imaging such as side lobes.
      In this thesis, we define a mathematical framework for the beamforming of ultrasonic data compatible with Compressive Sensing. Then, we investigate its capabilities on simple simulations in terms of resolution and super-resolution. Finally, we adapt t-CBF to real-life ultrasonic data. In particular, we reconstruct 2D cardiac images at a frame rate 100-fold higher than typical values.
Generation of high-energy clean multicolored ultrashort pulses and their application in single-shot temporal contrast measurement
Creators: name: Wang, Peng
name: Shen, Xiong
name: Liu, Jun
name: Li, Ruxin
Publisher: name: arXiv
Year: 2019
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate the generation of 100-μJ-level multicolored femtosecond pulses based on a single-stage cascaded four-wave mixing (CFWM) process in a thin glass plate. The generated high-energy CFWM signals can shift the central wavelength and have well-enhanced temporal contrast because of the third-order nonlinear process. They are innovatively used as clean sampling pulses of a cross-correlator for single-shot temporal contrast measurement. With a simple home-made setup, the proof-of-principle experimental results demonstrate the single-shot cross-correlator with dynamic range of 1010, temporal resolution of about 160 fs and temporal window of 50 ps. To the best of our knowledge, this is the first demonstration in which both the dynamic range and the temporal resolution of a single-shot temporal contrast measurement are comparable to those of a commercial delay-scanning cross-correlator.
description: 20 pages, 8 figures
Noisy Spherical Resonant Detector of Gravitational Waves: Veto on the Longitudinal Part of the Signal
Creators: name: Montanari, Enrico
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The equations of a resonant sphere in interaction with $N$ secondary radial oscillators (transducers) on its surface have been found in the context of Lagrangian formalism. It has been shown the possibility to exert a veto against spurious events measuring the longitudinal component of a signal. Numerical simulations has been performed, which take into account thermal noise between resonators and the sphere surface, for a particular configuration of the transducers.
description: 16 pages 2 ps-figures; revtex; accepted for publication in Nuovo Cimento B
Tipping in: School integration in gentrifying neighborhoods
Creators: Stillman, Jennifer Burns
Publisher: name: Columbia University
Year: 2011
Subjects: Education and state
School management and organization
School integration
Gentrification

description: The purpose of this study is to examine the school choice process of Gentry Parents --white, middle and upper-middle class, highly-educated parents living in gentrifying neighborhoods -- to determine how, through the compounding effect of their many individual choices, a segregated urban school in a gentrifying neighborhood is able to transform into an integrated school, a process I call "tipping in." This study uses data from 52 formal interviews of Gentry Parents in three different gentrifying/gentrified neighborhoods in New York City, and data from dozens of informal interviews and observations of Gentry Parents on playgrounds, school tours, and in pre-school cubby rooms. This study found that tipping in happens through the actions and reactions of different types of Gentry Parents: Innovator and Early Adopter Gentry Parents who are willing to be the first of their peer group to enroll their child in a segregated school, and Early Majority and Late Majority Gentry Parents who will only enroll their children in a school once their peers have gone in and done the hard work of changing the culture of the school to feel "middle class." After the Innovators, each subsequent wave of Gentry Parents will only enroll their children in a school if the prior wave keeps their children enrolled. This study suggests that Gentry Parents often take their children out of a school during the tipping in process, making retention of gentry children as important to tipping in as attracting them in the first place. Attracting gentry children appears to be difficult because Gentry Parents primarily prefer schools that are diverse and progressive, attributes not typically found in segregated urban schools. Retaining gentry children appears to be difficult primarily because Gentry Parent school expectations often do not match the reality of an integrating school, and principals are described as struggling to manage the culture gap that reportedly exists between Gentry Parents and non-Gentry Parents.
HEJ 2.2: W boson pairs and Higgs boson plus jet production at high energies
Creators: name: Andersen, Jeppe R.
name: Ducloué, Bertrand
name: Elrick, Conor
name: Hassan, Hitham
name: Maier, Andreas
name: Nail, Graeme
name: Paltrinieri, Jérémy
name: Papaefstathiou, Andreas
name: Smillie, Jennifer M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present version 2.2 of the High Energy Jets (HEJ) Monte Carlo event generator for hadronic scattering processes at high energies. The new version adds support for two further processes of central phenomenological interest, namely the production of a W boson pair with equal charge together with two or more jets and the production of a Higgs boson with at least one jet. Furthermore, a new prediction for charged lepton pair production with high jet multiplicities is provided in the high-energy limit. The accuracy of HEJ 2.2 can be increased further through an enhanced interface to standard predictions based on conventional perturbation theory. We describe all improvements and provide extensive usage examples. HEJ 2.2 can be obtained from https://hej.hepforge.org.
description: 36 pages, 6 figures and many code listings. Journal version
Additional file 5: of Effect of tiotropium inhaler use on mortality in patients with tuberculous destroyed lung: based on linkage between hospital and nationwide health insurance claims data in South Korea
Creators: name: Kim, Ho
name: Kim, Tae
name: Ye-Jee Kim
name: Rhee, Chin
name: Yeon-Mok Oh
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Developmental Biology
subject: Science Policy

description: Baseline characteristics of patients in tiotropium and non-tiotropium groups among patients without airflow limitation (FEV1/FVC ratio < 0.7) after propensity score matching (DOCX 15 kb)
Additional file 1: of A school-based intervention based on self-determination theory to promote girls' physical activity: study protocol of the CReActivity cluster randomised controlled trial
Creators: name: Demetriou, Yolanda
name: Bachner, Joachim
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Developmental Biology
subject: Science Policy

description: Table S1. Measurement instruments (DOCX 19 kb)
Privatisation, structural adjustment and Australian higher education policy
Creators: name: Stone, Diane
Publisher: name: The Australian National University
Year: 1989
Subjects: subject: Privatization Australia
subject: Higher education and state Australia

description: This thesis attempts to explain why privatisation, in its various forms, has taken place in Australian higher education and to assess the implications of the emergence of a small sector of private providers upon public policy in general, and of changes to the mode of provision, financing and regulation in particular. (1) It will argue that economic and fiscal pressures have curtailed the Commonwealth's ability to fund adequately higher education expansion and that privatisation, through the introduction of user-pays systems, such as the graduate tax, is seen as an expedient means for government to overcome fiscal constraints. Privatisation, however, can take a variety of forms other than user-pays such as the sale of public assets, contracting out service provision to private sector providers and the liberalisation of government controls. All of these methods transfer the responsibility of production and/or financing of goods and sendees away from the public sector to private individuals or corporations.
Exploring de Sitter Space and Holography
Creators: name: Balasubramanian, Vijay
name: de Boer, Jan
name: Minic, Djordje
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We explore aspects of the physics of de Sitter (dS) space that are relevant to holography with a positive cosmological constant. First we display a nonlocal map that commutes with the de Sitter isometries, transforms the bulk-boundary propagator and solutions of free wave equations in de Sitter onto the same quantities in Euclidean anti-de Sitter (EAdS), and takes the two boundaries of dS to the single EAdS boundary via an antipodal identification. Second we compute the action of scalar fields on dS as a functional of boundary data. Third, we display a family of solutions to 3d gravity with a positive cosmological constant in which the equal time sections are arbitrary genus Riemann surfaces, and compute the action of these spaces as a functional of boundary data from the Einstein gravity and Chern-Simons gravity points of view. These studies suggest that if de Sitter space is dual to a Euclidean conformal field theory (CFT), this theory should involve two disjoint, but possibly entangled factors. We argue that these CFTs would be of a novel form, with unusual hermiticity conditions relating left movers and right movers. After exploring these conditions in a toy model, we combine our observations to propose that a holographic dual description of de Sitter space would involve a pure entangled state in a product of two of our unconventional CFTs associated with the de Sitter boundaries. This state can be constructed to preserve the de Sitter symmetries and and its decomposition in a basis appropriate to antipodal inertial observers would lead to the thermal properties of static patch.
description: LaTeX, v2: references added
Additional file 4: of Effect of tiotropium inhaler use on mortality in patients with tuberculous destroyed lung: based on linkage between hospital and nationwide health insurance claims data in South Korea
Creators: name: Kim, Ho
name: Kim, Tae
name: Ye-Jee Kim
name: Rhee, Chin
name: Yeon-Mok Oh
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Developmental Biology
subject: Science Policy

description: Baseline characteristics of patients in tiotropium and non-tiotropium groups among patients with airflow limitation (FEV1/FVC ratio < 0.7). (DOCX 16 kb)
Notes on the quantum tetrahedron
Creators: name: Coquereaux, Robert
Publisher: name: arXiv
Year: 2000
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: This is a set of notes describing several aspects of the space of paths on ADE Dynkin diagrams, with a particular attention paid to the graph E6. Many results originally due to A. Ocneanu are here described in a very elementary way (manipulation of square or rectangular matrices). We recall the concept of essential matrices (intertwiners) for a graph and describe their module properties with respect to right and left actions of fusion algebras. In the case of the graph E6, essential matrices build up a right module with respect to its own fusion algebra but a left module with respect to the fusion algebra of A11. We present two original results: 1) Our first contribution is to show how to recover the Ocneanu graph of quantum symmetries of the Dynkin diagram E6 from the natural multiplication defined in the tensor square of its fusion algebra (the tensor product should be taken over a particular subalgebra); this is the Cayley graph for the two generators of the twelve dimensional algebra E6 \otimes_A3 E6 and E6 refer to the commutative fusion algebras of the corresponding graphs). 2) To every point of the graph of quantum symmetries one can associate a particular matrix describing the `` torus structure'' of the chosen Dynkin diagram; following Ocneanu, one obtains in this way, in the case of E6, twelve such matrices of dimension 11x11, one of them is a modular invariant and encodes the partition function of the corresponding conformal field theory. Our own next contribution is to provide a simple algorithm for the determination of these matrices.
description: 45 pages, LaTeX, 10 eps figures. Revised version: several improvements taking into account remarks of the referee
title: Berührungsfreie Lagerungen – Bleibt das „Hoverboard“ ein Zukunftstraum?
Creators: name: Canders, Wolf-Rüdiger
Publisher: name: Cramer
Year: 2016
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Jahrbuch der BWG
subject: 629

description: Publikationen des Instituts für Elektrische Maschinen, Antriebe und Bahnen (IMAB)
Evaluation of energy performance of UBC's residential buildings using actual data
Creators: name: Shin, Ji-Yeon
Publisher: name: The University of British Columbia
Year: 2014

description: The Canadian residential sector consumes 20 per cent of Canada’s total secondary energy as shown in Figure 1 and there are many residential buildings that are currently being built on UBC campus. All the residential buildings on campus have to be constructed according to UBC’s own building rating system, the Residential Environmental Assessment Program (REAP), to ensure lower consumption of water, energy and other resources and higher-quality indoor environment than buildings that are built without any rating systems. However, REAP is applied during planning and construction phases and hence, it does not always guarantee lower energy consumption in the post-occupancy phase. This project was undertaken to assess the energy performance of UBC’s residential buildings using actual energy consumption data. The primary objective of this study is to analyze electricity and gas consumption of three of UBC’s Faculty and Staff Housing buildings. The main sources for this project are electricity and gas consumption data provided by UBC Utilities, building floor plans from UBC Infrastructure Development, and weather data. The average total energy intensity for the three buildings was found to be 165.4 kWh/m²/yr. For a more detailed break-down of energy analysis, individual suite metering for domestic hot water heating and gas fireplaces would be required. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
An exact local mapping from clock-spins to fermions
Creators: name: Traverso, Simone
name: Fleckenstein, Christoph
name: Sassetti, Maura
name: Ziani, Niccolò Traverso
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Clock-spin models are attracting great interest, due to both their rich phase diagram and their connection to parafermions. In this context, we derive an exact local mapping from clock-spin to fermionic partition functions. Such mapping, akin to techniques introduced by Fedotov and Popov for spin $\frac{1}{2}$ chains, grants access to well established numerical tools for the perturbative treatment of fermionic systems in the clock-spin framework. Moreover, in one dimension, it allows to use bosonization to access the low energy properties of clock-spin models. Finally, aside from the direct application in clock-spin models, this new mapping enables the conception of interesting fermionic models, based on the clock-spin counterparts.
description: 26 pages, 0 figures, Submission to SciPost
EXCAVATABILITY CLASSIFICATION OF SOFT SEDIMENTARY FORMATIONS: A CASE STUDY ON OPEN-PIT COAL MINES IN THAR, PAKISTAN
Creators: name: SHAFI MUHAMMAD PATHAN
name: ABDUL GHANI PATHAN
name: MUHAMMAD SAAD MEMON
name: ZUHAIB AHMED SHAIKH
Publisher: name: Zenodo
Year: 2024
Subjects: Excavation planning, Excavatability classification, Shovel performance, Soft Sedimentary Formations, Total Loading Time (TLT).

description: Abstract

This research explores the limitations of traditional excavatability assessment methods which predominantly focus on muck pile characteristics and offer limited insights for pre-excavation equipment selection. To address this gap, a novel empirical model was developed using key rock properties and shovel performance indicators, with Total Loading Time (TLT) as a critical metric. Regression analysis revealed a strong linear relationship between TLT and rock properties, with an R-squared value of 0.99 (p < 0.001), highlighting the predictive power of the model. Cohesion and Weight Bulk Density were identified as statistically significant predictors, validated within a 95% confidence interval. Additionally, a new excavatability classification system was proposed, integrating shovel performance and rock properties. Using a K-means clustering algorithm, three distinct excavatability classes were identified, ranging from easily excavated to difficult-to-excavate materials. This research provides a more comprehensive approach for excavation planning, facilitating more accurate equipment selection and operational efficiency in mining practices.
Topological Dissipative Photonics and Topological Insulator Lasers in Synthetic Time-Frequency Dimensions
Creators: name: Dong, Zhaohui
name: Chen, Xianfeng
name: Dutt, Avik
name: Yuan, Luqi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The study of dissipative systems has attracted great attention, as dissipation engineering has become an important candidate towards manipulating light in classical and quantum ways. Here,we investigate the behavior of a topological system with purely dissipative couplings in a synthetic time-frequency space. An imaginary bandstructure is shown, where eigen-modes experience different eigen-dissipation rates during the evolution of the system, resulting in mode competition between edge states and bulk modes. We show that distributions associated with edge states can dominate over bulk modes with stable amplification once the pump and saturation mechanisms are taken into consideration, which therefore points to a laser-like behavior for edge states robust against disorders. This work provides a scheme for manipulating multiple degrees of freedom of light by dissipation engineering, and also proposes a great candidate for topological lasers with dissipative photonics.
LST-Bench: Benchmarking Log-Structured Tables in the Cloud
Creators: name: Camacho-Rodríguez, Jesús
name: Agrawal, Ashvin
name: Gruenheid, Anja
name: Gosalia, Ashit
name: Petculescu, Cristian
name: Aguilar-Saborit, Josep
name: Floratou, Avrilia
name: Curino, Carlo
name: Ramakrishnan, Raghu
Publisher: name: arXiv
Year: 2023
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: Data processing engines increasingly leverage distributed file systems for scalable, cost-effective storage. While the Apache Parquet columnar format has become a popular choice for data storage and retrieval, the immutability of Parquet files renders it impractical to meet the demands of frequent updates in contemporary analytical workloads. Log-Structured Tables (LSTs), such as Delta Lake, Apache Iceberg, and Apache Hudi, offer an alternative for scenarios requiring data mutability, providing a balance between efficient updates and the benefits of columnar storage. They provide features like transactions, time-travel, and schema evolution, enhancing usability and enabling access from multiple engines. Moreover, engines like Apache Spark and Trino can be configured to leverage the optimizations and controls offered by LSTs to meet specific business needs. Conventional benchmarks and tools are inadequate for evaluating the transformative changes in the storage layer resulting from these advancements, as they do not allow us to measure the impact of design and optimization choices in this new setting.
 In this paper, we propose a novel benchmarking approach and metrics that build upon existing benchmarks, aiming to systematically assess LSTs. We develop a framework, LST-Bench, which facilitates effective exploration and evaluation of the collaborative functioning of LSTs and data processing engines through tailored benchmark packages. A package is a mix of use patterns reflecting a target workload; LST-Bench makes it easy to define a wide range of use patterns and combine them into a package, and we include a baseline package for completeness. Our assessment demonstrates the effectiveness of our framework and benchmark packages in extracting valuable insights across diverse environments. The code for LST-Bench is open-sourced and is available at https://github.com/microsoft/lst-bench/ .
Additional file 3: of Effect of tiotropium inhaler use on mortality in patients with tuberculous destroyed lung: based on linkage between hospital and nationwide health insurance claims data in South Korea
Creators: name: Kim, Ho
name: Kim, Tae
name: Ye-Jee Kim
name: Rhee, Chin
name: Yeon-Mok Oh
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Developmental Biology
subject: Science Policy

description: Baseline characteristics of patients in tiotropium and non-tiotropium groups among patients without airflow limitation (FEV1/FVC ratio â Ľ 0.7) after propensity score matching. (DOCX 15 kb)
To Be Out and In: Influencing factors in the recognition of SOGI-based asylum claims in South Africa and Kenya
Creators: Kremin, Marijke
Publisher: name: Columbia University
Year: 2017
Subjects: Human rights
Refugees
Refugees--Government policy
Refugees--Civil rights
Refugees--Social conditions
Sexual minorities
Civil rights

description: This thesis examines the relationship and influence of domestic law and culture on the recognition, respect, and adherence of international refugee law as it pertains to sexual orientation and gender based asylum claims in Sub-Saharan Africa. Using South Africa and Kenya as comparative case studies, the paper explores different factors that have contributed to a discovered lack of influence of policy and culture in the practice of refugee status determination, as domestic interests, bureaucratic structure and decision making, and international affairs and involvement. The purpose of the study is to better understand the fulfillment of sexual orientation and gender based claims within the context of differing legal contexts but similar cultural ones given the unacceptance of sexual and gender non-conforming individuals throughout African culture. By examining these contexts, the goal of the study was to ascertain what factors contribute to these differences so as best practices and strategies can be used and advocated for moving forward.
Minimal Off-Shell Version of N = 1 Chiral Supergravity
Creators: name: Tsuda, Motomu
name: Shirafuji, Takeshi
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We construct the minimal off-shell formulation of N = 1 chiral supergravity (SUGRA) introducing a complex antisymmetric tensor field $B_{μν}$ and a complex axial-vector field $A_μ$ as auxiliary fields. The resulting algebra of the right- and left-handed supersymmetry (SUSY) transformations closes off shell and generates chiral gauge transforamtions and vector gauge transformations in addition to the transformations which appear in the case without auxiliary fields.
description: 9 pages, latex
To Be Human in A Dehumanizing World: Black Lives Matter and the Human Rights Framework
Creators: Rohani, Maria
Publisher: name: Columbia University
Year: 2017
Subjects: Human rights
Black lives matter movement
Race relations
Racism--Political aspects
Racism
Anti-racism
Social justice

description: This thesis explores the relationship between Black Lives Matter and the human rights regime. First, the thesis contextualizes the contemporary movement within the long and complicated historical relationship between racial justice struggles and the international human rights system. Second, the paper looks at the available human rights tools that could advance the goals of Black Lives Matter, with a focus on relevant international treaties, the Inter-American System, and the Universal Periodic Review. Third, the project studies the ways in which Black Lives Matter has, on its own, already engaged with human rights discourse. Here, a sample of Twitter content will be examined as well as a selection of literature drafted by Black Lives Matter’s leaders. Lastly, the paper discusses the ways in which the human rights system, as it currently functions, may not support the vision and values of Black Lives Matter. This final section will rely on two key discussions: first, one that looks at the international system through the lens of critical race theory and second, one that complicates the role of the nation-state in the human rights regime. Ultimately, this thesis works to unpack the connection between Black Lives Matter and human rights and to interrogate the underlying complexities of this relationship.
International time transfer between precise timing facilities secured with a quantum key distribution network
Creators: name: Picciariello, Francesco
name: Vedovato, Francesco
name: Orsucci, Davide
name: Dominguez, Pablo Nahuel
name: Zechel, Thomas
name: Avesani, Marco
name: Padovan, Matteo
name: Foletto, Giulio
name: Calderaro, Luca
name: Dequal, Daniele
name: Shrestha, Amita
name: Blumel, Ludwig
name: Furthner, Johann
name: Vallone, Giuseppe
name: Villoresi, Paolo
name: Schmidt, Tobias D.
name: Moll, Florian
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Global Navigation Satellite Systems (GNSSs), such as GPS and Galileo, provide precise time and space coordinates globally and constitute part of the critical infrastructure of modern society. To reliably operate GNSS, a highly accurate and stable system time is required, such as the one provided by several independent clocks hosted in Precise Timing Facilities (PTFs) around the world. Periodically, the relative clock offset between PTFs is measured to have a fallback system to synchronize the GNSS satellite clocks. The security and integrity of the communication between PTFs is of paramount importance: if compromised, it could lead to disruptions to the GNSS service. Therefore, it is a compelling use-case for protection via Quantum Key Distribution (QKD), since this technology provides information-theoretic security. We have performed a field trial demonstration of such use-case by sharing encrypted time synchronization information between two PTFs, one located in Oberpfaffenhofen (Germany) and one in Matera (Italy) - more than 900km apart as the crow flies. To bridge this large distance, a satellite-QKD system is required, plus a "last-mile" terrestrial link to connect the optical ground station (OGS) to the actual location of the PTF. In our demonstration we have deployed two full QKD systems to protect the last-mile connection at both the locations and have shown via simulation that upcoming QKD satellites will be able to distribute keys between Oberpfaffenhofen and Matera exploiting already existing OGSs.
Gauged N=2 Supergravity in Nine-Dimensions and Domain Wall Solutions
Creators: name: Nishino, Hitoshi
name: Rajpoot, Subhash
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present massive N=2 supergravity with SO(2)-gauging in nine-dimensions by direct construction. A full lagrangian and transformation rules are fixed, respectively up to quartic and quadratic fermion terms. Corresponding to the generalized Scherk-Schwarz dimensional reduction utilizing SL(2,R) symmetry, this theory allows three arbitrary mass parameters m_0, m_1and m_2 in addition to the minimal gauge coupling g, so that our system has the most general form compared with other results in the past. Unlike ordinary gauged maximal supergravity theories in other dimensions, the scalar potential is positive definite for arbitrary values of the mass parameters. As an application, we also analyze the stability and supersymmetry for 7-brane domain wall solutions for this gauged maximal supergravity, keeping the three mass parameters.
description: 14 pages, 0 figure, One reference with acknowledgment added
Explaining dark matter halo density profiles with neural networks
Creators: name: Lucie-Smith, Luisa
name: Peiris, Hiranya V.
name: Pontzen, Andrew
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We use explainable neural networks to connect the evolutionary history of dark matter halos with their density profiles. The network captures independent factors of variation in the density profiles within a low-dimensional representation, which we physically interpret using mutual information. Without any prior knowledge of the halos' evolution, the network recovers the known relation between the early time assembly and the inner profile, and discovers that the profile beyond the virial radius is described by a single parameter capturing the most recent mass accretion rate. The results illustrate the potential for machine-assisted scientific discovery in complicated astrophysical datasets.
description: 7 pages, 5 figures. Minor changes to match version accepted for publication in PRL