cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ion Heating in Inhomogeneous Expanding Solar Wind Plasma: The Role of Parallel and Oblique Ion-Cyclotron Waves
Creators: name: Ozak, N.
name: Ofman, L.
name: Viñas, A. -F.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Remote sensing observations of coronal holes show that heavy ions are hotter than protons and their temperature is anisotropic. In-situ observations of fast solar wind streams provide direct evidence for turbulent Alfvén wave spectrum, left-hand polarized ion-cyclotron waves, and He$^{++}$ -- proton drift in the solar wind plasma, which can produce temperature anisotropies by resonant absorption and perpendicular heating of the ions. Furthermore, the solar wind is expected to be inhomogeneous on decreasing scales approaching the Sun. We study the heating of solar wind ions in inhomogeneous plasma with a 2.5D hybrid code. We include the expansion of the solar wind in an inhomogeneous plasma background, combined with the effects of a turbulent wave spectrum of Alfvénic fluctuations and initial ion-proton drifts. We study the influence of these effects on the perpendicular ion heating and cooling and on the spectrum of the magnetic fluctuations in the inhomogeneous background wind. We find that inhomogeneities in the plasma lead to enhanced heating compared to the homogenous solar wind, and the generation of significant power of oblique waves in the solar wind plasma. The cooling effect due to the expansion is not significant for super-Alfvénic drifts, and is diminished further when we include an inhomogenous background density. We reproduce the ion temperature anisotropy seen in observations and previous models, which is present regardless of the perpendicular cooling due to solar wind expansion. We conclude that small scale inhomogeneities in the inner heliosphere can significantly affect resonant wave ion heating.
title: Six axioms for building durable concrete structures
Creators: name: Mailvaganam, N. P.
name: Litvan, G. G.
Publisher: name: National Research Council of Canada. Institute for Research in Construction
Year: 1997
Subjects: subject: Concrete
valueUri: urn:ircsubjects:IRC0740
subject: Béton
valueUri: urn:ircsubjects:IRC0740

description: When can a concrete structure be considered durable? In one way, one can say it is durable when it is able to sustain the serviceability for which it was designed. A prospective view would be to say that a durable concrete is the reward for heeding all six axioms: 1) match the materials to the environment; 2) combine only materials with similar properties; 3) assess the limitations of a particular material in its functional context; 4) protect materials from general deterioration; 5) allow for change in use in the design; and 6) provide regular maintenance through routine repair. Axioms can be a tall order but in this case they pay off.
description: Quand un ouvrage en béton peut-il être considéré comme durable? Dans un certain sens, on peut dire qu'il est durable lorsqu'il est capable d'assurer la tenue en service prévue au départ. D'un point de vue rétrospectif, on dirait qu'un béton durable est le fruit du respect de six règles : 1) choisir les matériaux en fonction de l'environnement; 2) n'associer que des matériaux ayant des caractéristiques semblables; 3) évaluer les limites d'emploi d'un matériau donné dans son contexte fonctionnel; 4) prévenir la détérioration générale des matériaux; 5) prévoir, au moment de la conception, la possibilité d'un changement d'utilisation; 6) assurer un entretien régulier grâce à des réparations faites au fur et à mesure. Les règles peuvent être exigeantes mais, dans ce cas, elles sont payantes.
Pseudomagnetic fields in graphene nanobubbles of constrained geometry: A molecular dynamics study
Creators: name: Qi, Zenan
name: Kitt, Alexander L.
name: Park, Harold S.
name: Pereira, Vitor M.
name: Campbell, David K.
name: Neto, A. H. Castro
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Analysis of the strain-induced pseudomagnetic fields (PMFs) generated in graphene nanobulges under three different substrate scenarios shows that, in addition to the shape, the graphene-substrate interaction can crucially determine the overall distribution and magnitude of strain and those fields, in and outside the bulge. We utilize a combination of classical molecular dynamics, continuum mechanics, and tight-binding electronic structure calculations as an unbiased means of studying pressure-induced deformations and the resulting PMF in graphene nanobubbles of various geometries. The interplay among substrate aperture geometry, lattice orientation, internal gas pressure, and substrate type is analyzed in view of strain-engineered graphene nanostructures capable of confining and/or guiding electrons at low energies. Except in highly anisotropic geometries, the magnitude of the PMF is generally significant only near the boundaries of the aperture and rapidly decays towards the center because under gas pressure at the scales considered here there is considerable bending at the edges and the central region displays nearly isotropic strain. When the deflection lead to sharp bends at the edges, curvature and the tilting of the $p_z$ orbitals cannot be ignored and contributes substantially to the total field. The strong and localized nature of the PMF at the boundaries and its polarity-changing profile can be exploited to trap electrons inside the bubble or of guiding them in channel-like geometries defined by edges. However, we establish that slippage of graphene against the substrate is an important factor in determining the degree of concentration of PMFs in or around the bulge since it can lead to considerable softening of the strain gradients there. The nature of the substrate emerges thus as a decisive factor determining the effectiveness of nanoscale PMFs tailoring in graphene.
description: 20 pages, 20 figures including appendices, references updated
FORMULATION AND EVALUATION OF ITOPRIDE HYDROCHLORIDE CONTROLLED RELEASE TABLETS
Creators: name: Sirigadha Ramprasad
Publisher: name: Zenodo
Year: 2023

description: The aim of the present study was to develop controlled release formulation of Itopride hydrochloride to maintain constant therapeutic levels of the drug for over 12 hrs.  HPMC K 15M, HEC 2M, HPC 2M were employed as polymers. All the formulations were passed various physicochemical evaluation parameters and they were found to be within limits. From the dissolution studies it was evident that the formulation (F7) showed better and desired drug release pattern i.e., 98.68 % in 12 hours. It contains the HPC 2M polymer. It followed Zero order release kinetics mechanism.
Keywords: Itopride hydrochloride, HPMC K 15M, HEC 2M, HPC 2M and Controlled release tablets.
A simple view of the heavy-tailed sales distributions and application to the box-office grosses of U.S. movies
Creators: name: Yamamoto, Ken
Publisher: name: arXiv
Year: 2014
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: This letter treats of the power-law distribution of the sales of items. We propose a simple stochastic model which expresses a selling process of an item. This model produces a stationary power-law distribution, whose power-law exponent is analytically derived. Next we compare the model with an actual data set of movie income. We focus on the return on investment (ROI), defined as the gross income divided by the production budget. We confirm that the power-law exponent of ROI distribution can be estimated from the ratios of income between two adjoining weeks, as predicted by the model analysis. Moreover, exponential decay of weekly income is observed both in the model and actual income. Therefore, the proposed model is simple enough, but it can quantitatively describe the power-law sales distribution.
description: 5 pages, 6 figures
Phase transition in random adaptive walks on correlated fitness landscapes
Creators: name: Park, Su-Chan
name: Szendro, Ivan G.
name: Neidhart, Johannes
name: Krug, Joachim
Publisher: name: arXiv
Year: 2014
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: We study biological evolution on a random fitness landscape where correlations are introduced through a linear fitness gradient of strength $c$. When selection is strong and mutations rare the dynamics is a directed uphill walk that terminates at a local fitness maximum. We analytically calculate the dependence of the walk length on the genome size $L$. When the distribution of the random fitness component has an exponential tail we find a phase transition of the walk length $D$ between a phase at small $c$ where walks are short $(D \sim \ln L)$ and a phase at large $c$ where walks are long $(D \sim L)$. For all other distributions only a single phase exists for any $c > 0$. The considered process is equivalent to a zero temperature Metropolis dynamics for the random energy model in an external magnetic field, thus also providing insight into the aging dynamics of spin glasses.
Non-equilibrium Optical Conductivity in Materials with Localized Electronic States
Creators: name: Janković, Veljko
name: Vukmirović, Nenad
Publisher: name: arXiv
Year: 2014
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A wide range of disordered materials contain electronic states that are spatially well localized. In this work, we investigated the electrical response of such systems in non-equilibrium conditions to external electromagnetic field. We obtained the expression for optical conductivity valid for any non-equilibrium state of electronic subsystem. In the case of incoherent non-equilibrium state, this expression contains only the positions of localized electronic states, Fermi's golden rule transition probabilities between the states and the populations of electronic states. The same form of expression is valid both in the case of weak electron-phonon interaction and weak electron-impurity interaction that act as perturbations of electronic Hamiltonian. The derivation was performed by expanding the general expression for AC conductivity in powers of small electron-phonon interaction or electron-impurity interaction parameter. Applications of the expression to two model systems, a simple one- dimensional Gaussian disorder model and the model of a realistic three-dimensional organic polymer material, were presented, as well.
TALABALARNI TAYYORLASHNING BOSQICHLI TIZIMI, UNIVERSITET PROFILI VA UNDA AMALGA OSHIRILAYOTGAN O'QUV DASTURLARI
Creators: name: Genjemuratova, Gulkhan
Publisher: name: Zenodo
Year: 2024

description: Fanlar tizimi zamonaviy talabaning kasbiy tayyorgarligi mazmunini qurish uchun biz taklif qilgan barcha variantlarni oqilona amalga oshirish imkonini beradi, xususan: 1) mavjud kurslarni innovatsion kurslar bilan almashtirish; 2)kimyo o‘qitishning innovatsion metodlari asoslarini mavjud kurslar tarkibida alohida mazmun bloklari ko‘rinishida tarqoq taqsimlash va ularni keyinchalik ­turli shakllarda umumlashtirish; 3) universitetda an’anaviy tarzda o‘qiladigan fanlarni innovatsion mazmundagi qo‘shimcha kurslar bilan qo‘shish.
Phenomenology in supersymmetric neutrinophilic Higgs model with sneutrino dark matter
Creators: name: Choi, Ki-Young
name: Seto, Osamu
name: Shin, Chang Sub
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study a supersymmetric neutrinophilic Higgs model with large neutrino Yukawa couplings where neutrinos are Dirac particles and the lightest right-handed (RH) sneutrino is the lightest supersymmetric particle (LSP) as a dark matter candidate. Neutrinophilic Higgs bosons need to be rather heavy by the precise determination of the muon decay width and dark radiation constraints for large Yukawa couplings. From the Large Hadron Collider constraints, neutrinophilic Higgsino mass need to be heavier than several hundred GeV or close to the RH sneutrino LSP mass. The latter case is interesting because the muon anomalous magnetic dipole moment can be explained with a relatively large lightest neutrino mass, if RH sneutrino mixings are appropriately fine tuned in order to avoid stringent lepton flavor violation constraints. Dark matter is explained by asymmetric RH sneutrino dark matter in the favoured region by the muon anomalous magnetic dipole moment. In other regions, RH sneutrino could be an usual WIMP dark matter.
description: 25 pages, 13 figures, version accepted by JHEP
Impact of tunneling anisotropy on the conductivity of nanorod dispersions
Creators: name: Nigro, Biagio
name: Grimaldi, Claudio
Publisher: name: arXiv
Year: 2014
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: While the tunneling conductance between two spherical-like conducting particles depends on the relative inter-particle distance, the wave function overlap between states of two rod-like particles, and so the tunneling conductance, depends also on the relative orientation of the rod axes. Modeling slender rod-like particles as cylindrical quantum wells of diameter $D$ and length $L\gg D$, we calculate the matrix element of the tunneling between two rods for arbitrary relative orientations of the rod axes. We show that tunneling between two parallel rods is about $L/\sqrt{Dξ}$ times larger than the tunneling matrix element for perpendicular rods, where $ξ$ is the tunneling decay length. By considering the full dependence of the tunneling conductance on the angle between rod axes, we calculate within an effective medium theory the conductivity of dispersions of rods with different degrees of alignment. We find that for isotropically oriented rods, the effect of orientation in the tunneling processes is marginal for all rod concentrations. On the contrary, for systems of strongly aligned rods, the enhanced tunneling between nearly parallel rods increases significantly the system conductivity in a relatively large concentration range. Next, we consider systems in which short-range attraction between rods is added, as in dispersions of rods with depletion interaction. We find that the strongly anisotropic attraction promotes enhanced tunneling between neighboring parallel rods, increasing the effective medium conductivity by several orders of magnitude compared to the case in which the angular dependence of tunneling is ignored, even for relatively weak attractions.
description: 15 pages, 10 figures
Instructions for data analysis of classical random walk simulations from Quantum aspects of evolution: a contribution towards evolutionary explorations of genotype networks via quantum walks
Creators: name: Santiago-Alarcon, Diego
name: Tapia-McClung, Horacio
name: Lerma-Hernández, Sergio
name: Venegas-Andraca, Salvador E.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Biophysics
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 60114 Systems Biology

description: PDF instructions
Lattice template placement for coherent all-sky searches for gravitational-wave pulsars
Creators: name: Wette, Karl
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: All-sky, broadband, coherent searches for gravitational-wave pulsars are restricted by limited computational resources. Minimizing the number of templates required to cover the search parameter space, of sky position and frequency evolution, is one important way to reduce the computational cost of a search. We demonstrate a practical algorithm which, for the first time, achieves template placement with a minimal number of templates for an all-sky search, using the reduced supersky parameter-space metric of Wette and Prix [Phys. Rev. D 88, 123005 (2013)]. The metric prescribes a constant template density in the signal parameters, which permits that templates be placed at the vertices of a lattice. We demonstrate how to ensure complete coverage of the parameter space, including in particular at its boundaries. The number of templates generated by the algorithm is compared to theoretical estimates, and to previous predictions by Brady et al. [Phys. Rev. D 57, 2101 (1998)]. The algorithm may be applied to any search parameter space with a constant template density, which includes semicoherent searches and searches targeting known low-mass X-ray binaries.
description: 16 pages, 14 figures
Integrated Life Cycle Assessment (LCA) of Power and Heat Supply for a Neighborhood: A Case Study of Herne, Germany
Creators: name: Quest, Gemina
name: Arendt, Rosalie
name: Klemm, Christian
name: Bach, Vanessa
name: Budde, Janik
name: Vennemann, Peter
name: Finkbeiner, Matthias
Publisher: name: Technische Universität Berlin
Year: 2022
Subjects: subject: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
subject: LCA
subject: life cycle assessment
subject: ILCA
subject: SESMG
subject: energy system model
subject: urban energy system
subject: monetary evaluation
subject: urban scale
subject: renewable energy
subject: ESM

description: (1) The use of renewable energy for power and heat supply is one of the strategies to reduce greenhouse gas emissions. As only 14% of German households are supplied with renewable energy, a shift is necessary. This shift should be realized with the lowest possible environmental impact. This paper assesses the environmental impacts of changes in energy generation and distribution, by integrating the life cycle assessment (LCA) method into energy system models (ESM). (2) The integrated LCA is applied to a case study of the German neighborhood of Herne, (i) to optimize the energy supply, considering different technologies, and (ii) to determine the environmental impacts of the base case (status quo), a cost-optimized scenario, and a CO2-optimized scenario. (3) The use of gas boilers in the base case is substituted with CHPs, surface water heat pumps and PV-systems in the CO2-optimized scenario, and five ground-coupled heat pumps and PV-systems for the cost-optimized scenario. This technology shift led to a reduction in greenhouse gas emissions of almost 40% in the cost-optimized, and more than 50% in the CO2-optimized, scenario. However, technology shifts, e.g., due to oversized battery storage, risk higher impacts in other categories, such as terrestrial eco toxicity, by around 22%. Thus, it can be recommended to use smaller battery storage systems. (4) By combining ESM and LCA, additional environmental impacts beyond GHG emissions can be quantified, and therefore trade-offs between environmental impacts can be identified. Furthermore, only applying ESM leads to an underestimation of greenhouse gas emissions of around 10%. However, combining ESM and LCA required significant effort and is not yet possible using an integrated software.
Life-Cycle Assessment of Power-to-Liquid Kerosene Produced from Renewable Electricity and CO2 from Direct Air Capture in Germany
Creators: name: Micheli, Matteo
name: Moore, Daniel
name: Bach, Vanessa
name: Finkbeiner, Matthias
Publisher: name: Technische Universität Berlin
Year: 2022
Subjects: subject: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
subject: decarbonization
subject: defossilization
subject: life cycle assessment
subject: aviation
subject: synthetic kerosene
subject: e-kerosene
subject: sustainable aviation fuel
subject: power to liquid
subject: direct air capture
subject: green hydrogen
subject: renewable hydrogen

description: Decarbonization of the aviation sector is crucial to reaching the global climate targets. We quantified the environmental impacts of Power-to-Liquid kerosene produced via Fischer-Tropsch Synthesis from electricity and carbon dioxide from air as one broadly discussed alternative liquid jet fuel. We applied a life-cycle assessment considering a well-to-wake boundary for five impact categories including climate change and two inventory indicators. Three different electricity production mixes and four different kerosene production pathways in Germany were analyzed, including two Direct Air Capture technologies, and compared to fossil jet fuel. The environmental impacts of Power-to-Liquid kerosene varied significantly across the production pathways. E.g., when electricity from wind power was used, the reduction in CO2-eq. compared to fossil jet fuel varied between 27.6–46.2% (with non-CO2 effects) and between 52.6–88.9% (without non-CO2 effects). The reduction potential regarding CO2-eq. of the layout using low-temperature electrolysis and high-temperature Direct Air Capture was lower compared to the high-temperature electrolysis and low-temperature Direct Air Capture. Overall, the layout causing the lowest environmental impacts uses high-temperature electrolysis, low-temperature Direct Air Capture and electricity from wind power. This paper showed that PtL-kerosene produced with renewable energy could play an important role in decarbonizing the aviation sector.
Movable curves and semistable sheaves
Creators: name: Greb, Daniel
name: Kebekus, Stefan
name: Peternell, Thomas
Publisher: name: arXiv
Year: 2014
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14J60

description: This paper extends a number of known results on slope-semistable sheaves from the classical case to the setting where polarisations are given by movable curve classes. As applications, we obtain new flatness results for reflexive sheaves on singular varieties, as well as a characterisation of finite quotients of Abelian varieties via a Chern class condition.
description: 24 pages, 2 figures; v2: various minor corrections as requested by referees, will appear in International Mathematics Research Notices
The Association between Active Mobility and Subjective Wellbeing during COVID-19 in MENA Countries
Creators: name: Ranjbarnia, Behzad
name: Kamelifar, Mohammad Javad
name: Masoumi, Houshmand
Publisher: name: Technische Universität Berlin
Year: 2022
Subjects: subject: 300 Sozialwissenschaften
subject: active lifestyle
subject: subjective wellbeing
subject: ordinal logistic regression
subject: COVID-19
subject: Middle East and North Africa

description: Objective: To augment the international scientific approach to raising public mental health through active lifestyle among adults, we added the evidence of the association between physical activity and subjective wellbeing in the Middle East and North Africa region by emphasizing the mediator—COVID-19. This study aimed to identify the correlations between active mobility and subjective wellbeing during the COVID-19 pandemic in a sample from Tabriz, Iran, which has not yet been tackled in previous study. Methods: We finalized an online survey (N = 603) from adults between 5 June and 15 July 2021. This group reported their individual and socio-economic characteristics and their perception features and location (e.g., home, work) during COVID-19. The paper developed three ordinal logistic regression (OLR) models to examine the association between active mobility types such as commute, non-commute, frequency of active travel to parks and services per week, and different subjective wellbeing including: 1- life satisfaction, 2- feeling energetic, and 3- peaceful mind while controlling for socio-economic variables (e.g., age, gender, education, job, and income) and objective commute distance. We also incorporated the most relevant objective (street length, land-use mix, number of intersections, and building and population density) and subjective (perceived distance to different services, perceived walking places, and perceived facilities attractiveness) factors. Results: Positive response relationships between four types of physical activity levels and subjective wellbeing scores were demonstrated in all of the three developed models (with significant levels of 0.05, and 0.1) with appropriate model fits, which confirmed the existing literature. However, these relationships showed different patterns (varied significant levels) for each type of subjective wellbeing. In addition, the factors including street length (p value: 0.004), perceived walkable places (p value: 0.021, 0.068, 0.017, and 0.025) (positively), population density, and perceived distance to shopping malls (p value: 0.076, <0.0001, and 0.059 (negatively) were associated with different indicators of subjective wellbeing. Conclusion: As for the implication of our study, special actions by urban authorities such as increasing mixed-use and creating attractive places will be required to enhance the walkability of the neighborhoods. Moreover, notifying the adults regarding the benefits of physical activity is much more needed.
Instructions to build the genotype network from Quantum aspects of evolution: a contribution towards evolutionary explorations of genotype networks via quantum walks
Creators: name: Santiago-Alarcon, Diego
name: Tapia-McClung, Horacio
name: Lerma-Hernández, Sergio
name: Venegas-Andraca, Salvador E.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Biophysics
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 60114 Systems Biology

description: PDF instructions
Accelerating the Sinkhorn Algorithm for Sparse Multi-Marginal Optimal Transport via Fast Fourier Transforms
Creators: name: Ba, Fatima Antarou
name: Quellmalz, Michael
Publisher: name: Technische Universität Berlin
Year: 2022
Subjects: subject: 510 Mathematik
subject: multi-marginal optimal transport
subject: Sinkhorn algorithm
subject: fast Fourier transform
subject: image processing
subject: optimal transport
subject: Wasserstein barycenter

description: We consider the numerical solution of the discrete multi-marginal optimal transport (MOT) by means of the Sinkhorn algorithm. In general, the Sinkhorn algorithm suffers from the curse of dimensionality with respect to the number of marginals. If the MOT cost function decouples according to a tree or circle, its complexity is linear in the number of marginal measures. In this case, we speed up the convolution with the radial kernel required in the Sinkhorn algorithm via non-uniform fast Fourier methods. Each step of the proposed accelerated Sinkhorn algorithm with a tree-structured cost function has a complexity of O(KN) instead of the classical O(KN2) for straightforward matrix–vector operations, where K is the number of marginals and each marginal measure is supported on, at most, N points. In the case of a circle-structured cost function, the complexity improves from O(KN3) to O(KN2). This is confirmed through numerical experiments.
Inverse design and implementation of a wavelength demultiplexing grating coupler
Creators: name: Piggott, Alexander Y.
name: Lu, Jesse
name: Babinec, Thomas M.
name: Lagoudakis, Konstantinos G.
name: Petykiewicz, Jan
name: Vučković, Jelena
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Nanophotonics has emerged as a powerful tool for manipulating light on chips. Almost all of today's devices, however, have been designed using slow and ineffective brute-force search methods, leading in many cases to limited device performance. In this article, we provide a complete demonstration of our recently proposed inverse design technique, wherein the user specifies design constraints in the form of target fields rather than a dielectric constant profile, and in particular we use this method to demonstrate a new demultiplexing grating. The novel grating, which has not been developed using conventional techniques, accepts a vertical-incident Gaussian beam from a free-space and separates O-band $(1300\mathrm{nm})$ and C-band $(1550\mathrm{nm})$ light into separate waveguides. This inverse design concept is simple and extendable to a broad class of highly compact devices including frequency splitters, mode converters, and spatial mode multiplexers.
description: 17 pages, 4 figures, 1 table. A supplementary section describing the inverse-design algorithm in detail has been added, in addition to minor corrections and updated references
Instructions for data analysis of quantum walk simulations from Quantum aspects of evolution: a contribution towards evolutionary explorations of genotype networks via quantum walks
Creators: name: Santiago-Alarcon, Diego
name: Tapia-McClung, Horacio
name: Lerma-Hernández, Sergio
name: Venegas-Andraca, Salvador E.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Biophysics
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 60114 Systems Biology

description: PDF instructions
Exact ground states of a spin-1/2 Ising-Heisenberg model on the Shastry-Sutherland lattice in a magnetic field
Creators: name: Verkholyak, Taras
name: Strecka, Jozef
name: Mila, Frederic
name: Schmidt, Kai P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Exact ground states of a spin-1/2 Ising-Heisenberg model on the Shastry-Sutherland lattice with Heisenberg intra-dimer and Ising inter-dimer couplings are found by two independent rigorous procedures. The first method uses a unitary transformation to establish a mapping correspondence with an effective classical spin model, while the second method relies on the derivation of an effective hard-core boson model by continuous unitary transformations. Both methods lead to equivalent effective Hamiltonians providing a convincing proof that the spin-1/2 Ising-Heisenberg model on the Shastry-Sutherland lattice exhibits a zero-temperature magnetization curve with just two intermediate plateaus at one-third and one-half of the saturation magnetization, which correspond to stripe and checkerboard orderings of singlets and polarized triplets, respectively. The nature of the remarkable stripe order relevant to the one-third plateau is thoroughly investigated with the help of the corresponding exact eigenvector. The rigorous results for the spin-1/2 Ising-Heisenberg model on the Shastry-Sutherland lattice are compared with the analogous results for the purely classical Ising and fully quantum Heisenberg models. Finally, we discuss to what extent the critical fields of SrCu2(BO3)2 and (CuCl)Ca2Nb3O10 can be described within the suggested Ising-Heisenberg model.
description: 15 pages, 6 figures, minor corrections
$Λ_{\bar{\textrm{MS}}}^{(n_f=2)}$ from a momentum space analysis of the quark-antiquark static potential
Creators: name: Karbstein, Felix
name: Peters, Antje
name: Wagner, Marc
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We determine $Λ_{\bar{\textrm{MS}}}^{(n_f=2)}$ by fitting perturbative expressions for the quark-antiquark static potential to lattice results for QCD with $n_f=2$ dynamical quark flavors. To this end we use the perturbative static potential at the presently best known accuracy, i.e. up to ${\cal O}(α_s^4)$, in momentum space. The lattice potential is computed on a fine lattice with $a \approx 0.042 \, \textrm{fm}$ in position space. To allow for a comparison and matching of both results, the lattice potential is transformed into momentum space by means of a discrete Fourier transform. The value of $Λ_{\bar{\textrm{MS}}}^{(n_f=2)}$ is extracted in momentum space. All sources of statistical and systematic errors are discussed. The uncertainty in the value of $Λ_{\bar{\textrm{MS}}}^{(n_f=2)}$ is found to be smaller than that obtained in a recent position space analysis of the static potential based on the same lattice data.
description: 30 pages, 6 figures; some clarifications added, matches journal version
From Jack polynomials to minimal model spectra
Creators: name: Ridout, David
name: Wood, Simon
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In this note, a deep connection between free field realisations of conformal field theories and symmetric polynomials is presented. We give a brief introduction into the necessary prerequisites of both free field realisations and symmetric polynomials, in particular Jack symmetric polynomials. Then we combine these two fields to classify the irreducible representations of the minimal model vertex operator algebras as an illuminating example of the power of these methods. While these results on the representation theory of the minimal models are all known, this note exploits the full power of Jack polynomials to present significant simplifications of the original proofs in the literature.
description: 14 pages, corrected typos and added comment on connections to the AGT conjecture in introduction, version to appear in J. Phys. A
Counterdiabatic driving of the quantum Ising model
Creators: name: Damski, Bogdan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The system undergoes adiabatic evolution when its population in the instantaneous eigenbasis of its time-dependent Hamiltonian changes only negligibly. Realization of such dynamics requires slow-enough changes of the parameters of the Hamiltonian, a task that can be hard to achieve near quantum critical points. A powerful alternative is provided by the counterdiabatic modification of the Hamiltonian allowing for an arbitrarily quick implementation of the adiabatic dynamics. Such a counterdiabatic driving protocol has been recently proposed for the quantum Ising model [A. del Campo et al., Phys. Rev. Lett. 109, 115703 (2012)]. We derive an exact closed-form expression for all the coefficients of the counterdiabatic Ising Hamiltonian. We also discuss two approximations to the exact counterdiabatic Ising Hamiltonian quantifying their efficiency of the dynamical preparation of the desired ground state. In particular, these studies show how quantum criticality enhances finite-size effects in the counterdiabatic dynamics.
description: 11 pages, version accepted in JSTAT
Instructions to calculate classical and quantum probabilities from Quantum aspects of evolution: a contribution towards evolutionary explorations of genotype networks via quantum walks
Creators: name: Santiago-Alarcon, Diego
name: Tapia-McClung, Horacio
name: Lerma-Hernández, Sergio
name: Venegas-Andraca, Salvador E.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Biophysics
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 60114 Systems Biology

description: PDF instructions
title: Résistance au feu des poteaux d’acier remplis de béton
Creators: name: Kodur, V. K. R.
Publisher: name: Conseil national de recherches du Canada. Institut de recherche en construction
Year: 1997
Subjects: subject: Concrete columns
valueUri: urn:ircsubjects:IRC0481
subject: Poteaux de béton
valueUri: urn:ircsubjects:IRC0481

description: Les architectes aiment construire des immeubles à poteaux d'acier apparents. Les poteaux métalliques creux sont très vulnérables en cas d'incendie, mais ceux qui sont remplis de béton peuvent résister très bien au feu. Le degré de résistance au feu dépend du type de remplissage : béton ordinaire, béton renforcé de fibres d'acier ou béton armé traditionnel. Selon les équations de calcul et un programme d'ordinateur, ce sont les poteaux remplis de béton ordinaire qui résistent le moins au feu. Mais il y a tellement de variables en cause qu'on ne peut être aussi catégorique.
description: Architects like to design buildings with exposed steel columns. Whereas unfilled steel columns are quite vulnerable to fire, those filled with concrete can be quite fire-resistant. Just how fire-resistant depends on the concrete filling, which can be just plain concrete, steel-fibre concrete or bar-reinforced concrete. The plain-concrete-filled columns, according to design equations and a computer program, are the least fire-resistant of the three. But there are really too many variables involved to be so categorical.
Machine Learning for Brain MRI Data Harmonization: A Systematic Review
Creators: name: Wen, Grace
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Biomedical Engineering and Bioengineering
subject: Engineering
subject: Machine learning
subject: MRI

description: This is a registration of the systematic review methodology after the completion of data collection. This review synthesized the existing literature on MRI harmonization using machine learning techniques and algorithms. The goal was to provide insights into the effectiveness and limitations of current harmonization methods and to identify areas for further research and development. The summary of the methodologies and the reason of conducting the resignation are attached below.
Renormalized stress-energy tensor for spin-1/2 fields in expanding universes
Creators: name: del Rio, Adrian
name: Navarro-Salas, Jose
name: Torrenti, Francisco
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We provide an explicit expression for the renormalized expectation value of the stress-energy tensor of a spin-$1/2$ field in a spatially flat FLRW universe. Its computation is based on the extension of the adiabatic regularization method to fermion fields introduced recently in the literature. The tensor is given in terms of UV-finite integrals in momentum space, which involve the mode functions that define the quantum state. As illustrative examples of the method efficiency, we see how to compute the renormalized energy density and pressure in two interesting cosmological scenarios: a de Sitter spacetime and a radiation-dominated universe. In the second case, we explicitly show that the late-time renormalized stress-energy tensor behaves as that of classical cold matter. We also check that, if we obtain the adiabatic expansion of the scalar field mode functions with a similar procedure to the one used for fermions, we recover the well-known WKB-type expansion.
description: Latex file, 26 pages
title: La condensation dans les fenêtre des bâtiments historiques à vocation modifiée
Creators: name: Brown, W. C.
Publisher: name: Conseil national de recherches du Canada. Institut de recherche en construction
Year: 1997
Subjects: subject: Moisture performance
valueUri: urn:ircsubjects:IRC0392
subject: Performance hygrométrique
valueUri: urn:ircsubjects:IRC0392

description: Lorsqu'un édifice du patrimoine est modifié pour servir à une autre fin, les changements apportés à l'environnement intérieur peuvent occasionner des problèmes de condensation. Cet article fait état d'une évaluation de certaines fenêtres de la maison Laurier faite par des chercheurs de l'IRC et visant à déterminer leur capacité de contrôler la condensation. L'évaluation d'un bâtiment à valeur patrimoniale, couramment appelé « historique », en vue de prévoir sa performance dans de nouvelles conditions exige que l'on détermine : la vocation précise du bâtiment; les niveaux de température et d'humidité relative qui seront nécessaires; les conditions climatiques existant à cet endroit (c'est-à-dire la température de calcul en hiver, qui est connue pour toutes les localités canadiennes); enfin, la performance effective de l'enveloppe du bâtiment, qui peut être évaluée grâce à un programme de surveillance. Il se peut que celui-ci montre que le bâtiment satisfait aux critères définis et donc qu'il n'a pas à subir de modifications.
description: When a heritage building is adapted for a new use, changes to the indoor environment can lead to condensation problems. This Update describes an evaluation of selected windows undertaken by IRC researchers at Ottawa’s Laurier House (now being used as a museum) to determine their effectiveness in controlling condensation. The evaluation of a heritage or ‘historic’ building to determine how it will perform under new conditions involves the following steps: identifying the specific uses to which the building will be put; establishing the temperature and relative humidity needed to support this use; determining the climatic conditions in which the building has to operate (i.e., the winter design temperature, which is readily available for any location in Canada) and determining the actual performance of the building envelope through a program of monitoring. Such a program may demonstrate that the level of performance the building provides is adequate for the proposed use under the proposed conditions and that no modifications are required.
A CNSM APPROACH TO THE TRANSITION FROM BEING A STAY-AT-HOME MOTHER TO A WORKING MOTHER AFTER THE DISSOLUTION OF MARRIAGE
Creators: name: Navarro, Jessica Dee
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: classificationCode: 470108
subject: Organisational, interpersonal and intercultural communication

description: This research studies post-stay-at-home mothers from a traditional nuclear family who enter the workforce after divorce. While family communication scholars have explored topics surrounding divorce, very little about how mothers make sense of their transition from being stay-at-home mothers (SAHMs) to working mothers (WMs) after divorce.Through an interdisciplinary approach, this research uses Transitional Theory (Anderson et al., 2012; Schlossberg, 1981; Schlossberg, 2008) and Communicated Narrative Sense Making (CNSM) (Koenig Kellas, 2018; Koenig Kellas & Horstman, 2014) to understand how mothers make sense of their experiences during this change in their lives. It further studies the participants through mixed methods, using the Shift and Persist Scale (Chen et al., 2015) and Sense of Control Scale (Lachman & Weaver, 1998a, 1998b) along with reflexive thematic analysis (TA) (Braun & Clarke; 2021; 2006).The results of the qualitative section of this study brought forth seven themes displayed in the realms of sense-making during transition. These themes are Belief themes: Out of control, taking back life, and finding a place to belong; the Value themes: Finding the wherewithal to survive, discovering and reclaiming self, and accepting of accomplishments; and the Meaning-Making theme: Recognizing resolve.The quantitative results of this study indicated that there were significantly higher levels of persistence and personal mastery with those who told narratives framed positively as opposed to those who told narratives framed negatively. There was, however, no significance in their ability to shift or in their perceived constraints.
title: Comment réduire la formation de boursouflures dans les couvertures multicouches
Creators: name: Paroli, R. M.
name: Booth, R. J.
Publisher: name: Conseil national de recherches du Canada. Institut de recherche en construction
Year: 1997
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

description: Over the past two decades, blistering has been the most common problem with built-up roofs. The problem is most noticeable on hot, sunny days. Given that a perfect, void-free roof cannot be laid even under ideal conditions, there are nevertheless ways to reduce blisteriing. To address some of them: dry materials should be used in dry conditions. Not just dry conditions, but warm conditions as well, because voids in asphalt tend to occur more readily when asphalt cools quickly. With regard to materials, it's a good idea to use fibrous coverboards over all cellular plastic insulation so that gases formed during application can escape.
description: Au cours des deux dernières décennies, la formation de boursouflures a été le problème le plus courant dans les couvertures multicouches. C'est lors des jours ensoleillés et chauds que ce phénomène se manifeste le plus. Il n'est pas possible, même dans les conditions idéales, de réaliser une couverture parfaite et exempte de vides, mais il existe des moyens de réduire la formation de boursouflures. L'un d'eux consiste à utiliser des matériaux secs dans des conditions sèches. Et aussi dans des conditions chaudes, car des vides sont plus susceptibles de se produire dans l'asphalte lorsque celui-ci refroidit rapidement. En ce qui a trait aux matériaux, c'est une bonne idée de poser des doublures fibreuses sur tous les isolants en plastique cellulaire pour permettre aux gaz qui se sont formés lors des travaux de s'échapper.
Experimental quantum key distribution with source flaws
Creators: name: Xu, Feihu
name: Wei, Kejin
name: Sajeed, Shihan
name: Kaiser, Sarah
name: Sun, Shihai
name: Tang, Zhiyuan
name: Qian, Li
name: Makarov, Vadim
name: Lo, Hoi-Kwong
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Decoy-state quantum key distribution (QKD) is a standard technique in current quantum cryptographic implementations. Unfortunately, existing experiments have two important drawbacks: the state preparation is assumed to be perfect without errors and the employed security proofs do not fully consider the finite-key effects for general attacks. These two drawbacks mean that existing experiments are not guaranteed to be secure in practice. Here, we perform an experiment that for the first time shows secure QKD with imperfect state preparations over long distances and achieves rigorous finite-key security bounds for decoy-state QKD against coherent attacks in the universally composable framework. We quantify the source flaws experimentally and demonstrate a QKD implementation that is tolerant to channel loss despite the source flaws. Our implementation considers more real-world problems than most previous experiments and our theory can be applied to general QKD systems. These features constitute a step towards secure QKD with imperfect devices.
description: 12 pages, 4 figures, updated experiment and theory
Meeting the rehabilitation needs of rural major traumatic injury survivors
Creators: name: SHARP, VANESSA LOUISE
Publisher: name: Monash University
Year: 2022
Subjects: Rural and remote health services
Clinical neuropsychology
Rehabilitation

description: Survivors of major traumatic injury residing in rural locations experience challenges accessing rehabilitation services for persistent conditions due to their geographic location. Through four separate studies, this thesis explored a range of participant perspectives, including major traumatic injury survivors, rehabilitation practitioners, and compensation claims managers. The overarching aim was to understand whether the rehabilitation needs of rural major traumatic injury survivors are being met by the current services available. Overall, substantial unmet rehabilitation needs across major traumatic injury survivors in both metropolitan and rural regions were found. However, living in a rural location posed additional challenges to accessing rehabilitation services.