cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Snapshot Serengeti Online Lab
Creators: name: Willis, Charles
name: Klemens, Jeffrey
name: Agrawal, Rahul
name: Hebert, Sadie
name: Palmer, Meredith
name: Moe, Annika
name: Wassenberg, Deena
name: Barry, Katherine
name: Packer, Craig
Publisher: name: QUBES Educational Resources
Year: 2023

description: Snapshot Serengeti is a fully online inquiry-based lab that uses real camera-trap data from Serengeti National Park in Tanzania to explore themes of tropical ecology and animal behavior.
Quantum non-equilibrium dynamics of Rydberg gases in the presence of dephasing noise of different strengths
Creators: name: Levi, Emanuele
name: Gutierrez, Ricardo
name: Lesanovsky, Igor
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: In the presence of strong dephasing noise the dynamics of Rydberg gases becomes effectively classical, due to the rapid decay of quantum superpositions between atomic levels. Recently a great deal of attention has been devoted to the stochastic dynamics that emerges in that limit, revealing several interesting features, including kinetically-constrained glassy behaviour, self-similarity and aggregation effects. However, the non-equilibrium physics of these systems, in particular in the regime where coherent and dissipative processes contribute on equal footing, is yet far from being understood. To explore this we study the dynamics of a small one-dimensional Rydberg lattice gas subject to dephasing noise by numerically integrating the quantum Master equation. We interpolate between the coherent and the strongly dephased regime by defining a generalised concept of a blockade length. We find indications that the main features observed in the strongly dissipative limit persist when the dissipation is not strong enough to annihilate quantum coherences at the dynamically relevant time scales. These features include the existence of a time-dependent Rydberg blockade radius, and a growth of the density of excitations which is compatible with the power-law behaviour expected in the classical limit.
description: 15 pages, 6 figures
NOVEL PHANTOMS FOR ROBUST MRI-BASED RADIOMICS IN ONCOLOGY
Creators: name: BIANCHINI, LINDA
Publisher: name: Universit� degli Studi di Milano
Year: 2020

description: Radiomics is the process of converting medical images into minable high-dimensional data to support clinical decision. A dedicated software is exploited to extract many synthetic biomarkers, called radiomic features, which can be correlated with specific clinical outcomes and may uncover disease characteristics that failed to be appreciated by visual inspection of the images. In pelvic and breast cancer, MRI-based radiomics has been investigated for its potential to describe the tumour heterogeneity, thus improving diagnosis, prognosis and early therapy assessment, and it has shown promising results. However, the process lacks standardisation and harmonisation of the methods employed, from the image processing to the building of predictive models. Parts of these challenges can be investigated with phantom studies, which offer the possibility of repeated acquisition in controlled experimental setup. In this thesis, a pelvic phantom dedicated to MRI-based radiomics has been designed, developed and validated for the first time. A research has been conducted to identify the materials and geometry of the phantom in such a way that it could mimic the MR signal and texture of a tumour and its surrounding tissues, as seen in a set of representative patients. The phantom has been used for a multicentric evaluation of the repeatability and reproducibility of the radiomic features extracted from images acquired on three MR scanners of two vendors and two magnetic field strengths. This study allowed to identify a set of robust radiomic features to support studies on clinical datasets of patients with pelvic cancer. In addition, three radiomic software products for feature extraction have been tested to assess the impact of the choice of a specific tool on the value of the features. A prototype of a radiomic breast phantom has been assembled in the last part of the thesis work, including a 3D-printed insert to mimic a real tumour.
ANDAMENTO DELLA PREVALENZA IN ITALIA DEI CEPPI NON-B DI HIV-1 NEGLI ULTIMI TRENT'ANNI
Creators: name: CARAMMA, ILARIA CHIARA
Publisher: name: Universit� degli Studi di Milano
Year: 2010

description: Background HIV-1 non-B subtypes have recently entered Western Europe following immigration from other regions. The distribution of non-B clades and their association with demographic factors, over the entire course of the HIV-1 epidemic, have not been fully investigated in Italy. Methods We carried out a phylogenetic analysis of HIV-1 pol sequences derived from 3670 patients followed at 50 Italian clinical centres over nearly three decades. Results Overall, 417 patients (11.4%) carried non-B subtypes. The prevalence of non-B strains increased from 2.6% in 1980?1992 to 18.9% in 1993?2008 (Po0.0001) in a subset of 2479 subjects with a known year of diagnosis. A multivariate analysis on a subset of 1364 patients for whom relevant demographic data were available indicated that African ethnicity, heterosexual route of infection and year of diagnosis were independently associated with non-B HIV-1 infection (P 0.0001). All pure subtypes, except for clade K, and seven circulating recombinant forms were detected, accounting for 56.6 and 34.1% of the non-B infections, respectively. The F1 subtype was the most prevalent non-B clade among Europeans and was acquired heterosexually in half of this patient population. Unique recombinant forms accounted for 9.4% of the non-B sequences and showed a B/F1 recombination pattern in one-third of cases. Conclusions The circulation of non-B clades has significantly increased in Italy in association with demographic changes. Spread of the F1 subtype and B/F recombinants appears to predominate, which may result in a redistribution of the relative proportions of the different strains, and this could lead to overlapping epidemics. Thus, the HIV-1 landscape in Italy may in future be distinct from that of the rest of Europe.
Snapshot Serengeti Faculty Mentoring Network, Summer 2022
Creators: name: Ersts, Peter
name: Klemens, Jeffrey
name: LaMar, Drew
name: Macey, Suzanne
name: Russell, Ann
name: Waisanen, Edward
name: Willis, Charles
Publisher: name: QUBES Educational Resources
Year: 2023

description: The goal of our summer 2022 FMN was to develop a client-side interactive dashboard that allowed students to visualize and analyze data from the Snapshot Serengeti camera-trap research project.
Gibbs measures of nonlinear Schrödinger equations as limits of many-body quantum states in dimensions $d \leq 3$
Creators: name: Fröhlich, Jürg
name: Knowles, Antti
name: Schlein, Benjamin
name: Sohinger, Vedran
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 35Q55, 81V70, 60G60, 82B10, 35Q40

description: We prove that Gibbs measures of nonlinear Schrödinger equations arise as high-temperature limits of thermal states in many-body quantum mechanics. Our results hold for defocusing interactions in dimensions $d =1,2,3$. The many-body quantum thermal states that we consider are the grand canonical ensemble for $d = 1$ and an appropriate modification of the grand canonical ensemble for $d =2,3$. In dimensions $d =2,3$, the Gibbs measures are supported on singular distributions, and a renormalization of the chemical potential is necessary. On the many-body quantum side, the need for renormalization is manifested by a rapid growth of the number of particles. We relate the original many-body quantum problem to a renormalized version obtained by solving a counterterm problem. Our proof is based on ideas from field theory, using a perturbative expansion in the interaction, organized by using a diagrammatic representation, and on Borel resummation of the resulting series.
La relación entre objetos y contextos en Arqueología: entrevista al Dr. Axel Nielsen
Creators: name: Petit, Facundo
name: Carreras, Jésica
Publisher: name: Zenodo
Year: 2023
Subjects: Objetos arqueológicos
contexto de hallazgo
arqueología argentina
entrevista

description: Realizamos una entrevista al Dr. Axel Nielsen el 18 de octubre de 2022 en el Museo Nacional Terry (Tilcara, Jujuy) a partir de la problemática de estudiar objetos cerámicos de dicha institución que no cuentan con un registro de su contexto de hallazgo. Con esto en mente, elaboramos preguntas orientadas a profundizar en la relación entre objetos arqueológicos y contextos de hallazgo en la arqueología en general y en su desarrollo específico en Tilcara, así como en distintas instancias de la práctica arqueológica, como los rescates y el estudio de colecciones.
description: {"references": ["Carballido, M. y Fern\u00e1ndez, P. (2001). El registro arqueol\u00f3gico: evidencia, contexto y procesos de formaci\u00f3n. En: Garreta, M. y Bellelli, C. (Comps.), La trama cultural. Textos de antropolog\u00eda y arqueolog\u00eda (p\u00e1gs. 75-82). Ediciones Caligraf.", "Nielsen, A. E. (1989). La Ocupaci\u00f3n Ind\u00edgena del Territorio Humahuaca Oriental durante los Per\u00edodos de Desarrollos Regionales e Inka (Tesis de doctorado in\u00e9dita). Universidad Nacional de C\u00f3rdoba, C\u00f3rdoba, Argentina.", "Nielsen, A. E. (2000). Andean Caravans: An Ethnoarchaeology (Tesis de doctorado). The University of Arizona, Tucson, United States of America."]}
Abelian Floquet symmetry-protected topological phases in one dimension
Creators: name: Roy, Rahul
name: Harper, Fenner
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Time-dependent systems have recently been shown to support novel types of topological order that cannot be realised in static systems. In this paper, we consider a range of time-dependent, interacting systems in one dimension that are protected by an Abelian symmetry group. We classify the distinct topological phases that can exist in this setting and find that they may be described by a bulk invariant associated with the unitary evolution of the closed system. In the open system, nontrivial phases correspond to the appearance of edge modes in the many-body quasienergy spectrum, which relate to the bulk invariant through a form of bulk-edge correspondence. We introduce simple models which realise nontrivial dynamical phases in a number of cases, and outline a loop construction that can be used to generate such phases more generally.
description: 13 pages, 1 figure; Published version
title: Performance testing standards for building
Creators: name: Legget, R. F.
name: Hutcheon, N. B.
Publisher: name: National Research Council of Canada. Division of Building Research
Year: 1979
Subjects: subject: Codes & guides
valueUri: urn:ircsubjects:IRC0200
subject: Codes et guides
valueUri: urn:ircsubjects:IRC0200
subject: building performance
subject: performance des ouvrages
subject: performance specifications
subject: cahier de spécification de performance
subject: test procedures
subject: méthode d'essai
subject: standard tests
subject: essai normalise

description: This Digest discusses some of the problems and limitations of performance codes and specifications for buildings. It points out some of the difficulties in devising test methods that will represent real situations and the need to supplement such tests by judgement. The authors stress that there is no quick and easy way to predict performance and that the person making a prediction must always know as much as possible about the product under review and its use.
Motivations of Premium Seat Buyers
Creators: name: Macaione, Amy
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: As a result of increased operating expenses and decreased football game attendance, a growing number of athletic departments have opted to add or increase premium seating availability in their football stadiums. The purpose of this study is to gain a better understanding of purchase motivations of premium seat holders at collegiate football games, examine the relationship between buyer demographics and motivations to purchase premium seats, and compare perceived motivations of premium seat buyers with actual motivations of premium seat buyers. Premium seat holders from a large, public Atlantic Coast Conference school were surveyed. Descriptive statistics found the most significant motivational factors for premium seat purchases are “upgraded services and amenities,” “brand image of the team,” and “value of exclusivity in the venue.” Data collected also indicated that, overall, sport professionals are wrong in their perception of premium seat buyer motivations.
A generalization of circulant Hadamard and conference matrices
Creators: name: Turek, Ondřej
name: Goyeneche, Dardo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 15B10, 15B36, 05B20

description: We study the existence and construction of circulant matrices $C$ of order $n\geq2$ with diagonal entries $d\geq0$, off-diagonal entries $\pm1$ and mutually orthogonal rows. These matrices generalize circulant conference ($d=0$) and circulant Hadamard ($d=1$) matrices. We demonstrate that matrices $C$ exist for every order $n$ and for $d$ chosen such that $n=2d+2$, and we find all solutions $C$ with this property. Furthermore, we prove that if $C$ is symmetric, or $n-1$ is prime, or $d$ is not an odd integer, then necessarily $n=2d+2$. Finally, we conjecture that the relation $n=2d+2$ holds for every matrix $C$, which generalizes the circulant Hadamard conjecture. We support the proposed conjecture by computing all the existing solutions up to $n=50$.
description: 21 pages; revised version, text partly rewritten, exposition improved, mistakes and typos corrected
Healing the scars: Tropical rainforest carbon cycling. Does it matter which tree species you plant?
Creators: name: Russell, Ann
name: Oosterom, Anneke
name: Marek, Eden
name: Zhou, Lili
Publisher: name: QUBES Educational Resources
Year: 2023

description: This online module explores how differences in traits of tropical tree species translate into differential effects on the carbon cycle, integrating ecological information across scales and the human dimension, and fostering quantitative skills.
title: Energy conservation in existing school buildings
Creators: name: Jones, L.
Publisher: name: National Research Council of Canada. Division of Building Research
Year: 1979
Subjects: subject: energy conservation
subject: conservation de l'énergie
subject: school buildings
subject: bâtiment scolaire

description: This Digest briefly outlines how energy conservation programs can be implemented in existing school buildings. It deals with energy audits, operation and maintenance practice and the upgrading that may be needed to reduce the consumption of energy in schools.
title: Text: Replication forks associated with long nuclear actin filaments in mild stress conditions display increased dynamics
Creators: name: Merigliano, Chiara
Publisher: name: CaltechDATA
Year: 2024
Subjects: human

description: Extended data script 1. This script enables automated pre-processing of focus positional data for MSD analyses. The input is an Excel file extracted from Imaris ('Detailed'.csv), and re-ordered by track ID. In this file, the positional data for each focus are shown for subsequent time points, and followed by the next focus. The script creates separate files, one for each focus, already formatted for MSD analyses, i.e. with time points starting from 001 in the first column and XYZ coordinates in the 3 subsequent columns. The resulting set of files is entered as is a previously published script for MSD calculation (Caridi et al. 2018b).
Trace Identities for the Topological Vertex
Creators: name: Bryan, Jim
name: Kool, Martijn
name: Young, Benjamin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: The topological vertex is a universal series which can be regarded as an object in combinatorics, representation theory, geometry, or physics. It encodes the combinatorics of 3D partitions, the action of vertex operators on Fock space, the Donaldson-Thomas theory of toric Calabi-Yau threefolds, or the open string partition function of $\mathbb{C}^3$. We prove several identities in which a sum over terms involving the topological vertex is expressed as a closed formula, often a product of simple terms, closely related to Fourier expansions of Jacobi forms. We use purely combinatorial and representation theoretic methods to prove our formulas, but we discuss applications to the Donaldson-Thomas invariants of elliptically fibered Calabi-Yau threefolds at the end of the paper.
description: 21 pages. Published version
Electron backscatter analyses of omphacite to constrain eclogite exhumation in the Blue Ridge of western North Carolina
Creators: name: Syvertsen, Kara Anne
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2006

description: The Lick Ridge eclogite is mapped as large bodies surrounded by accretionary wedge sediments in the Eastern Blue Ridge. The exhumation process of the Lick Ridge eclogite cannot be determined by analogy to other eclogite localities. Elsewhere, large bodies of eclogite are typically enclosed in continental rocks. Eclogite contained within accretionary wedge sediments do not exceed 25 meters in size. The orientation of the eclogite facies fabric can provide insight into the exhumation process. Two eclogite lineation directions are present, but one is dominant. Compositional and petrographic data show the two lineations were found contemporaneous and most likely reflect a strain heterogeneity during eclogite facies deformation. The pervasive lineation indicates that the different Lick Ridge eclogite blocks were exhumed within a coherent terrane rather than as large blocks within a flowing mélange.
Understanding Critical Peace Education: A Case Study of a Moroccan School
Creators: name: Forte, Rita
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2017
Subjects: critical peace education
curriculum
postmodernism
power/knowledge

description: Despite seemingly remarkable progress on civic-political concepts in different cultural and national contexts, the co-existence of students and civilizations in the classroom remains underrepresented in critical peace education as a pedagogical approach. As a result, this qualitative case study seeks to understand the curriculum-as-planned, -implemented, and -lived of four Grade 5 classrooms at a school in Morocco. In this study, I suggest that their curriculum represents some of the key concepts taken up in critical peace education. Critical peace education works toward creating spaces of empowerment for students where they can critically analyze their relations to power. I use Foucault’s conceptions of discursive regimes, power/knowledge, care of the self, genealogy, and archaeology as the foundation for a postmodernist worldview. As part of my research methodology I collected data from curriculum documents, photos of activities/events/interactions at the school and/or within the classroom, responses from Grade 5 students to questions about their lived experiences about “making peace,” and journaling about my role as a participant-observer in the Arabic-speaking classrooms. This research seeks to mobilize knowledge that focuses on current practices for designing curriculum and pedagogical strategies that are needed to develop what we might call a “critical peace curriculum.”
Complementarity of DM Searches in a Consistent Simplified Model: the Case of Z'
Creators: name: Jacques, Thomas
name: Katz, Andrey
name: Morgante, Enrico
name: Racco, Davide
name: Rameez, Mohamed
name: Riotto, Antonio
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We analyze the constraints from direct and indirect detection on fermionic Majorana Dark Matter (DM). Because the interaction with the Standard Model (SM) particles is spin-dependent, a priori the constraints that one gets from neutrino telescopes, the LHC, direct and indirect detection experiments are comparable. We study the complementarity of these searches in a particular example, in which a heavy $Z'$ mediates the interactions between the SM and the DM. We find that for heavy dark matter indirect detection provides the strongest bounds on this scenario, while IceCube bounds are typically stronger than those from direct detection. The LHC constraints are dominant for smaller dark matter masses. These light masses are less motivated by thermal relic abundance considerations. We show that the dominant annihilation channels of the light DM in the Sun and the Galactic Center are either $b\bar b$ or $t\bar t$, while the heavy DM annihilation is completely dominated by $Zh$ channel. The latter produces a hard neutrino spectrum which has not been previously analyzed. We study the neutrino spectrum yielded by DM and recast IceCube constraints to allow proper comparison with constraints from direct and indirect detection experiments and LHC exclusions. Note that the original version of the paper contains an important error: the contribution of the $Z$-mediated processes was overlooked. This changes some of the results of the paper. For the details and the correct results please see the erratum attached to this file as an appendix.
description: v1: 38 pages, 8 figures; v2: added references; v3: matches published version: added a recast of the indirect constraints from Fermi-LAT observations of Dwarf Spheroidal Galaxies; v4: corrected an important error, by including the Z exchange, updating the result and attaching an erratum
title: Earthquakes and buildings in Canada
Creators: name: Rainer, J. H.
name: Northwood, T. D.
Publisher: name: National Research Council of Canada. Division of Building Research
Year: 1979
Subjects: subject: earthquakes
subject: séisme
subject: earthquake resistant structures
subject: structure parasismique
subject: earthquake engineering
subject: calcul parasismique

description: This Digest presents a general outline of some of the technical information available on seismic activity, seismic risk as well as some of the trends in the design of earthquake resistant structures. The summary is intended for the non-specialist in earthquake engineering who need an appreciation of the building problems connected with earthquakes and the design of structures to resist them.
Quantum Theory of Half-integer Spin Free Particles from the Perspective of the Majorana Equation
Creators: name: Nanni, Luca
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: In this study, the Majorana equation for particles with arbitrary spin is solved for a half-integer spin free particle. The solution for the fundamental state, corresponding to the reference frame in which the particle is at rest, is compared with that obtained using the Dirac equation, especially as regards the approximation in the relativistic limit, in which the speed of the particle is close to that of light. Furthermore, the solutions that Majorana defines unphysical, proving that their occupation probability increases with the particle velocity, are taken into consideration. The anomalous behavior exhibited by these states also shows that for high-energy particles with small mass, transitions from a bradyonic state to a tachyonic state become possible.
description: 17 pages, 2 figures
Arab American Parents' Attitudes Toward Their Children's Heritage Language Maintenance and Language Practices
Creators: name: Martin, Natalie
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: This study explored the language practices and attitudes towards Arabic of Arab American parents (N=94) and examined associations between perceived racism and language practices and attitudes. Self-identified Arab American parents with at least one child between the ages of 5 and 18 were surveyed. Parents were asked questions about their family's language proficiency in Arabic, how they use Arabic in their lives, whether they encourage their children to use Arabic, their attitudes towards the Arabic language, and perceived racism. Results indicate that parents hold positive attitudes towards Arabic and engage in various language practices that promote the maintenance of Arabic in their families. Results indicate that racism is not significantly associated with language attitudes or language encouragement.
A group-invariant version of Lehmer's conjecture on heights
Creators: name: van Ittersum, Jan-Willem M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11G50, 11R04, 11R06, 12D10

description: We state and prove an equivariant version of Lehmer's conjecture on heights, generalizing papers by Zagier (1993) and Dresden (1998) which are special cases of this theorem. We also extend their three cases to a full classification of all groups satisfying the condition that the set of all orbits for which every non-zero element lies on the unit circle is finite and non-empty.
description: 8 pages, 2 tables
Preliminary Analysis of an Internal Annuloplasty Ring for the Aortic Valve
Creators: name: Sadeghi Malvajerdi, Neda
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2017
Subjects: Aortic valve
Aortic regurgitation
Reimplantation
ventriculo-aortic junction (VAJ)
Finite element (FE)
Supple Peri-Guard(SPG)
Internal annuloplasty Ring
Aortic stenosis
Heart anatomy and physiology
Sinotubular junction (STJ)
Mechanical heart valves
Tissue valves
pericardium
CellScale biaxial tester
Guccione model

description: Among the four valves of the heart, the aortic valve (AV) is frequently affected by disease. When progressive dilatation of the valve produces a leak when the valve should close (regurgitation), repair may be possible. AV repair is a desirable option because, contrary to AV replace-ment using a prosthesis, it does not require life-long anticoagulation treatment, and retains the original tissues that naturally combat structural degradation. All the AV repair procedures developed by cardiac surgeons require a good stabilization of the ventriculo-aortic junction (VAJ) diameter, through annuloplasty or reimplantation, for long-term success. In the present work, a preliminary design for a new type of annuloplasty ring is proposed that surgeons could tailor to the each valve’s shape and suture inside the VAJ. The design consists in wrapping a commonly available surgical biomaterial into a ring of controlled radial flexibility. For sizing and material selection, several models of increasing complexity were created to account for the anisotropic, hyperelastic nature of all the materials involved. First, an analytical model was programmed in MATLAB to assess the radial flexibility of annuloplasty rings formed with different biomaterials and select those that could match the physiological VAJ radial flexibility between systolic and diastolic pressures. The same program was also used to reproduce the experimental radial and longitudinal stretches of the human VAJ from 0 to 140 mmHg pressures. The analytical models were used to calibrate the parameters of independent finite element (FE) models of the VAJ and ring. Finally, the FE approach was extended to simulate the ring after suturing inside the VAJ, to determine the radial flexibility of the assembly under pulsatile pressure. Supple Peri-Guard® bo-vine pericardium patches used in transverse orientation emerged as the best currently available material option for the proposed ring, although a material providing more physiological radial flexibility would be desirable.
title: Hazards from products of combustion and oxygen depletion in occupied spaces
Creators: name: Kent, A. D.
Publisher: name: National Research Council of Canada. Division of Building Research
Year: 1979
Subjects: subject: Smoke management
valueUri: urn:ircsubjects:IRC0440
subject: Gestion de la fumée
valueUri: urn:ircsubjects:IRC0440
subject: ventilation
subject: confined spaces
subject: milieu confiné
subject: toxicity
subject: toxicité
subject: carbon dioxide
subject: dioxyde de carbone
subject: carbon monoxide
subject: monoxyde de carbone

description: In a poorly ventilated space the occupants may be exposed to hazardous air conditions of reduced oxygen content or increased carbon dioxide concentration. If unvented fuel- burning appliances are used for heating or cooking there is the possibility of further danger from carbon monoxide poisoning. The effects of these gases in varying quantities upon smokers and non-smokers are enumerated and a method is outlined for the determination of the ventilating requirements for specific quantities of toxic gas production. Results are given of tests of typical unvented camping and boating appliances using a variety of fuels, and these indicate that certain models warrant special ventilation precautions. Guidelines are suggested for users of such equipment to avoid hazardous atmospheres in confined spaces.
Regularity of the free boundary in the biharmonic obstacle problem
Creators: name: Aleksanyan, Gohar
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: In this article we use flatness improvement argument to study the regularity of the free boundary for the biharmonic obstacle problem with zero obstacle. Assuming that the solution is almost one-dimensional, and that the non-coincidence set is an non-tangentially accessible (NTA) domain, we derive the $C^{1,α}$-regularity of the free boundary in a small ball centered at the origin. From the $C^{1,α}$-regularity of the free boundary we conclude that the solution to the biharmonic obstacle problem is locally $ C^{3,α}$ up to the free boundary, and therefore $C^{2,1} $. In the end we study an example, showing that in general $ C^{2,\frac{1}{2}}$ is the best regularity that a solution may achieve in dimension $n \geq 2$.
description: 33 pages
title: Quarry tile and other ceramic floor tiles
Creators: name: Ritchie, T.
Publisher: name: National Research Council of Canada. Division of Building Research
Year: 1979
Subjects: subject: quarry tiles
subject: carreau de carrière
subject: ceramic tiles
subject: carreau de céramique
subject: adhesives
subject: adhésif (agent)
subject: property (quality)
subject: propriété
subject: maintenance (restoring)
subject: entretien

description: This Digest discusses several factors that need to be considered in applying and using quarry and other ceramic tile floors. These include the nature of the base to which tiles are applied, the properties of the tiles, their bonding agents as well as proper maintenance practice.
Una reflexión del encuentro de Arianna Valentini, Francesc Pedró y Axel Rivas en ChatGPT, inteligencia artificial y educación superior: ¿Qué deben saber las instituciones de educación superior? Organizado por la UNESCO IESALC
Creators: name: Yma, Javier Zanabria
Publisher: name: Zenodo
Year: 2023
Subjects: ChatGPT-Evaluación-Investigación

description: El impacto de las Inteligencias Artifiales y las nuevas estrategias de las instituciones superiores con respecto de las nuevas prácticas de investigación.
Isospin properties of quark matter from a 3-flavor NJL model
Creators: name: Liu, He
name: Xu, Jun
name: Chen, Lie-Wen
name: Sun, Kai-Jia
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We have studied the properties of hot and dense quark matter based on the 3-flavor Nambu-Jona-Lasinio (NJL) model as well as its Polyakov-loop extension (pNJL) with scalar-isovector and vector-isovector couplings. Provided a considerable large isospin asymmetry or isospin chemical potential, isospin splittings of constituent mass, chiral phase transition boundary, and critical point for $u$ and $d$ quarks can be observed for positive isovector coupling constants but are suppressed for negative ones. The quark matter symmetry energy decreases with the increasing isovector coupling constant, and is mostly enhanced in the pNJL model than in the NJL model. A positive scalar-isovector coupling constant is more likely to lead to an unstable isospin asymmetric quark matter. The isovector coupling has been further found to affect particle fractions as well as the equation of state in hybrid stars. Possible effects on the isospin properties of quark matter have also been discussed if the strangeness sector is further broken among the flavor symmetry.
description: 12 pages, 11 figures, significantly revised, version to appear in Phys. Rev. D
On Optimal Policies in Full-Duplex Wireless Powered Communication Networks
Creators: name: Abd-Elmagid, Mohamed A.
name: Biason, Alessandro
name: ElBatt, Tamer
name: Seddik, Karim G.
name: Zorzi, Michele
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: The optimal resource allocation scheme in a full-duplex Wireless Powered Communication Network (WPCN) composed of one Access Point (AP) and two wireless devices is analyzed and derived. AP operates in a full-duplex mode and is able to broadcast wireless energy signals in downlink and receive information data in uplink simultaneously. On the other hand, each wireless device is assumed to be equipped with Radio-Frequency (RF) energy harvesting circuitry which gathers the energy sent by AP and stores it in a finite capacity battery. The harvested energy is then used for performing uplink data transmission tasks. In the literature, the main focus so far has been on slot-oriented optimization. In this context, all the harvested RF energy in a given slot is also consumed in the same slot. However, this approach leads to sub-optimal solutions because it does not take into account the Channel State Information (CSI) variations over future slots. Differently from most of the prior works, in this paper we focus on the long-term weighted throughput maximization problem. This approach significantly increases the complexity of the optimization problem since it requires to consider both CSI variations over future slots and the evolution of the batteries when deciding the optimal resource allocation. We formulate the problem using the Markov Decision Process (MDP) theory and show how to solve it. Our numerical results emphasize the superiority of our proposed full-duplex WPCN compared to the half-duplex WPCN and reveal interesting insights about the effects of perfect as well as imperfect self-interference cancellation techniques on the network performance.
description: Proc. IEEE Symp. Modeling and Optimization in Mobile, Ad Hoc and Wireless Networks (WiOpt), May 2016
title: Glass fibre-reinforced polyester composites
Creators: name: Blaga, A.
Publisher: name: National Research Council of Canada. Division of Building Research
Year: 1979
Subjects: subject: Skylights
valueUri: urn:ircsubjects:IRC06111
subject: Lanterneaux
valueUri: urn:ircsubjects:IRC06111
subject: Plastics
valueUri: urn:ircsubjects:IRC0710
subject: Plastiques
valueUri: urn:ircsubjects:IRC0710
subject: reinforced plastics
subject: plastique renforcé
subject: application
subject: property (quality)
subject: propriété
subject: durability
subject: durabilité

description: Glass fibre-reinforced polyester composites are extensively used in buildings as panels, skylights, luminous ceilings and canopies. The nature, general properties, applications and durability of GRP composite materials are discussed.
Permutation groups arising from pattern involvement
Creators: name: Lehtonen, Erkko
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: For an arbitrary finite permutation group $G$, subgroup of the symmetric group $S_\ell$, we determine the permutations involving only members of $G$ as $\ell$-patterns, i.e., avoiding all patterns in the set $S_\ell \setminus G$. The set of all $n$-permutations with this property constitutes again a permutation group. We consequently refine and strengthen the classification of sets of permutations closed under pattern involvement and composition that is due to Atkinson and Beals.
description: 39 pages; extensively reorganized and rewritten, misprints corrected
A random field formulation of Hooke's law in all elasticity classes
Creators: name: Malyarenko, Anatoliy
name: Ostoja-Starzewski, Martin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 60G60, 74B05

description: For each of the $8$ isotropy classes of elastic materials, we consider a homogeneous random field taking values in the fixed point set $\mathsf{V}$ of the corresponding class, that is isotropic with respect to the natural orthogonal representation of a group lying between the isotropy group of the class and its normaliser. We find the general form of the correlation tensors of orders $1$ and $2$ of such a field, and the field's spectral expansion.
description: Modified version, typos corrected, 100 pages, 1 figure
Random motion on finite rings, I: commutative rings
Creators: name: Ayyer, Arvind
name: Singla, Pooja
Publisher: name: arXiv
Year: 2016
Subjects: subject: Representation Theory (math.RT)
subject: Probability (math.PR)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 20C05, 13M05, 16W22, 60J10

description: We consider irreversible Markov chains on finite commutative rings randomly generated using both addition and multiplication. We restrict ourselves to the case where the addition is uniformly random and multiplication is arbitrary. We first prove formulas for eigenvalues and multiplicities of the transition matrices of these chains using the character theory of finite abelian groups. The examples of principal ideal rings (such as $\mathbb{Z}_{n}$) and finite chain rings (such as $\mathbb{Z}_{p^k}$) are particularly illuminating and are treated separately. We then prove a recursive formula for the stationary probabilities for any ring, and use it to prove explicit formulas for the probabilities for finite chain rings when multiplication is also uniformly random. Finally, we prove constant mixing time for our chains using coupling.
description: 24 pages, 2 figures, minor changes, published version
Improving the modelling of redshift-space distortions - II. A pairwise velocity model covering large and small scales
Creators: name: Bianchi, Davide
name: Percival, Will J.
name: Bel, Julien
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We develop a model for the redshift-space correlation function, valid for both dark matter particles and halos on scales $>5\,h^{-1}$Mpc. In its simplest formulation, the model requires the knowledge of the first three moments of the line-of-sight pairwise velocity distribution plus two well-defined dimensionless parameters. The model is obtained by extending the Gaussian-Gaussianity prescription for the velocity distribution, developed in a previous paper, to a more general concept allowing for local skewness, which is required to match simulations. We compare the model with the well known Gaussian streaming model and the more recent Edgeworth streaming model. Using N-body simulations as a reference, we show that our model gives a precise description of the redshift-space clustering over a wider range of scales. We do not discuss the theoretical prescription for the evaluation of the velocity moments, leaving this topic to further investigation.
description: 18 pages, 10 figures, published in MNRAS
title: Calculating resistance to fire
Creators: name: Lie, T. T.
Publisher: name: National Research Council of Canada. Division of Building Research
Year: 1979
Subjects: subject: Walls
valueUri: urn:ircsubjects:IRC0484
subject: Murs
valueUri: urn:ircsubjects:IRC0484
subject: fire resistance
subject: résistance au feu
subject: structural members
subject: élément de structure
subject: calculations

description: This Digest presents a state-of-the-art summary of some studies on the fire resistance of various structural members now being conducted at the Division of Building Research. For example, the fire resistance of beams, columns and walls can be determined by calculation which is far less expensive and time-consuming than by testing. Several fire resistance formulas are now available for making design calculations.
Truncated Random Measures
Creators: name: Campbell, Trevor
name: Huggins, Jonathan H.
name: How, Jonathan P.
name: Broderick, Tamara
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistics Theory (math.ST)
subject: Methodology (stat.ME)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Completely random measures (CRMs) and their normalizations are a rich source of Bayesian nonparametric priors. Examples include the beta, gamma, and Dirichlet processes. In this paper we detail two major classes of sequential CRM representations---series representations and superposition representations---within which we organize both novel and existing sequential representations that can be used for simulation and posterior inference. These two classes and their constituent representations subsume existing ones that have previously been developed in an ad hoc manner for specific processes. Since a complete infinite-dimensional CRM cannot be used explicitly for computation, sequential representations are often truncated for tractability. We provide truncation error analyses for each type of sequential representation, as well as their normalized versions, thereby generalizing and improving upon existing truncation error bounds in the literature. We analyze the computational complexity of the sequential representations, which in conjunction with our error bounds allows us to directly compare representations and discuss their relative efficiency. We include numerous applications of our theoretical results to commonly-used (normalized) CRMs, demonstrating that our results enable a straightforward representation and analysis of CRMs that has not previously been available in a Bayesian nonparametric context.
description: To appear in Bernoulli; 58 pages, 3 figures
title: Superplastifiants et béton
Creators: name: Ramachandran, V. S.
Publisher: name: Conseil national de recherches du Canada. Division des recherches en construction
Year: 1979
Subjects: subject: Admixtures
valueUri: urn:ircsubjects:IRC0742
subject: Adjuvants
valueUri: urn:ircsubjects:IRC0742
subject: water reducing plasticizers
subject: plastifiant réducteur d'eau
subject: concrete (materials)
subject: béton (matériau)

description: Les superplastifiants sont une classe de produits appelés réducteurs d'eau qui sont utilisés pour diminuer les besoins en eau du béton. Les réducteurs d'eau normaux sont capables de réduire les besoins en eau de 10 à 15% tandis que les superplastifiants sont capables de réduire ces besoins jusqu'à 30%. On les appelle selon les cas des superplastifiants, des superfluidifiants, des super-réducteurs d'eau ou des réducteurs d'eau de haute capacité. Leurs applications et leurs effets sur le béton sont analysés dans cet article.
Reseña: Saberes expertos. Ceramistas y Arqueología del Salado. (Entramando Saberes, 2022)
Creators: name: De Luca, Candela
Publisher: name: Zenodo
Year: 2023
Subjects: reseña, documental, arqueología, ceramistas

description: Reseña sobre el documental producido por el programa de extensión Entramando Saberes (Facultad de Filosofía y Letras - Universidad de Buenos Aires) en el que se aborda el vínculo entre un equipo de investigación arqueológica y ceramistas del interior de la provincia de Buenos Aires que recuperan técnicas prehispánicas. URL del video: https://www.youtube.com/watch?v=t8skhpyGgGI
description: {"references": ["Entramando Sabres (6 de junio de 2022). Saberes Expertos. Ceramistas y arqueolog\u00eda del Salado [Video]. Youtube. https://www.youtube.com/watch?v=t8skhpyGgGI"]}
Formality and Kontsevich--Duflo type theorems for Lie pairs
Creators: name: Liao, Hsuan-Yi
name: Stiénon, Mathieu
name: Xu, Ping
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Algebra (math.QA)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: $\newcommand{\poly}{_{\operatorname{poly}}^{\bullet}}\newcommand{\td}{(\operatorname{td}_{L/A}^{\nabla})^{\frac{1}{2}}}\newcommand{\cx}[1]{\operatorname{tot}\big(Γ(Λ^\bullet A^\vee)\otimes_R\mathcal{#1}\poly\big)}\newcommand{\cy}[1]{\mathbb{H}^\bullet_{\operatorname{CE}}(A,\mathcal{#1}\poly)}$Kontsevich's formality theorem states that there exists an $L_\infty$ quasi-isomorphism from the dgla $T\poly(M)$ of polyvector fields on a smooth manifold $M$ to the dgla $D\poly(M)$ of polydifferential operators on $M$, which extends the classical Hochschild--Kostant--Rosenberg map. In this paper, we extend Kontsevich's formality theorem to Lie pairs, a framework which includes a range of diverse geometric contexts such as complex manifolds, foliations, and $\mathfrak{g}$-manifolds. The spaces $\cx{T}$ and $\cx{D}$ associated with a Lie pair $(L,A)$ each carry an $L_\infty$ algebra structure canonical up to $L_\infty$ isomorphism. These two spaces serve as replacements for the spaces of polyvector fields and polydifferential operators, respectively. Their corresponding cohomology groups $\cy{T}$ and $\cy{D}$ admit canonical Gerstenhaber algebra structures. We establish the following formality theorem for Lie pairs: there exists an $L_\infty$ quasi isomorphism from $\cx{T}$ to $\cx{D}$ whose first Taylor coefficient is equal to $\operatorname{hkr}\circ\td$. Here $\td$ acts on $\cx{T}$ by contraction. Furthermore, we prove a Kontsevich--Duflo type theorem for Lie pairs: the Hochschild--Kostant--Rosenberg map twisted by the square root of the Todd class of the Lie pair $(L,A)$ is an isomorphism of Gerstenhaber algebras from $\cy{T}$ to $\cy{D}$. As applications, we establish formality theorems and Kontsevich--Duflo type theorems for complex manifolds, foliations, and $\mathfrak{g}$-manifolds. In the case of complex manifolds, we recover the Kontsevich--Duflo theorem of complex geometry.
description: 55 pages, several typos corrected, some references added, some minor cosmetic changes in the presentation
title: Les joints dans les couvertures bitumineuses classiques
Creators: name: Turenne, R. G.
Publisher: name: Conseil national de recherches du Canada. Division des recherches en construction
Year: 1979
Subjects: subject: Roofs
valueUri: urn:ircsubjects:IRC0770
subject: Toits
valueUri: urn:ircsubjects:IRC0770
subject: Roofs
valueUri: urn:ircsubjects:IRC0370
subject: Toitures
valueUri: urn:ircsubjects:IRC0370
subject: roofing
subject: couvertures
subject: bituminous roofings
subject: couverture bitumineuse
subject: roof expansion joints
subject: joint de dilatation (toiture)
subject: design
subject: conception (design)

description: On utilise divers types de joints dans les couvertures de facon à permettre la dilatation et la contraction et à empêcher la fissuration ou un retrait excessif au bord du toit, mais fréquemment ces joints ne donnent pas un rendement satisfaisant. L'article traite des diviseurs de zones et des joints de dilatation et fournit des indications sur l'amélioration de la conception et du positionnement de ces joints dans un système de couverture classique.