cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Combustion waves in a model with chain branching reaction and their stability
Creators: name: Gubernov, V. V.
name: Sidhu, H. S.
name: Mercer, G. N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: In this paper the travelling wave solutions in the adiabatic model with two-step chain branching reaction mechanism are investigated both numerically and analytically in the limit of equal diffusivity of reactant, radicals and heat. The properties of these solutions and their stability are investigated in detail. The behaviour of combustion waves are demonstrated to have similarities with the properties of nonadiabatic one-step combustion waves in that there is a residual amount of fuel left behind the travelling waves and the solutions can exhibit extinction. The difference between the nonadiabatic one-step and adiabatic two-step models is found in the behaviour of the combustion waves near the extinction condition. It is shown that the flame velocity drops down to zero and a standing combustion wave is formed as the extinction condition is reached. Prospects of further work are also discussed.
description: pages 32, figures 23
Interaction of macrophage cationic proteins with the outer membrane of Pseudomonas Aeruginosa
Creators: name: Sawyer, Janet Gail
Publisher: name: University of British Columbia
Year: 2010

description: Purified macrophage cationic proteins were used in functional assays to determine their interactions with the outer membrane and lipopolysaccharide of Pseudomonas aeruginosa. A fluorescent derivative of polymyxin B (dansyl-polymyxin) was found to bind to saturation to purified lipopolysaocharide, with similar affinity for the aminoglycoside supersensitive strain H215 and wild type strain H103 lipopolysaocharide. MCP-1 could displace more dansyl-polymyxin bound to the lipopolysaocharide of both strains, and bound with greater affinity than MCP-2. When whole cells were used, MCPs also displaced bound dansyl-polymyxin. Effects on the outer membrane of whole cells were examined by determining the initial rate of uptake of the hydrophobic fluorescent probe 1-N-phenylnaphthylamine. Uptake was enhanced in the presence of MCPs, indicating permeabilization of the outer membrane. MCP-1 caused maximal uptake of the probe at 40 µg/ml, MCP-2 at 70 µg/ml, and crude extract at only 20 µg/ml. Uptake of the probe was found to be enhanced at add pH, with maximal uptake occurring with only 7.5 µg/ml MCP-1 at pH 6.5. The data suggested that MCPs act to permeabilize the outer membranes of P. aeruginosa in a manner analagous to that defined for other polycationic agents.
Serial Interference Cancellation for Improving uplink in LoRa-like Networks
Creators: name: Tesfay, Angesom Ataklity
name: Simon, Eric Pierre
name: Ferré, Guillaume
name: Clavier, Laurent
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, we present a new receiver design, which significantly improves performance in the Internet of Things networks such as LoRa, i.e., having a chirp spread spectrum modulation. The proposed receiver is able to demodulate multiple users simultaneously transmitted over the same frequency channel with the same spreading factor. From a non-orthogonal multiple access point of view, it is based on the power domain and uses serial interference cancellation. Simulation results show that the receiver allows a significant increase in the number of connected devices in the network.
First Results From the Large Binocular Telescope: Deep Photometry of New dSphs
Creators: name: Coleman, Matthew G.
name: de Jong, Jelte
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This contribution describes photometry for two Galactic dSphs obtained with the Large Binocular Telescope to a magnitude of ~25.5. Using the Large Binocular Camera, a purpose-built wide-field imager for the LBT, we have examined the structure and star formation histories of two newly-discovered Local Group members, the Hercules dSph and the Leo T dSph/dIrr system. We have constructed a structural map for the Hercules system using three-filter photometry to V ~ 25.5. This is the first deep photometry for this system, and it indicates that Hercules is unusually elongated, possibly indicating distortion due to the Galactic tidal field. We have also derived the first star formation history for the Leo T system, and find that its oldest population of stars (age ~ 13 Gyr) were relatively metal-rich, with [Fe/H] ~ -1.5.
description: Four pages, two figures. To appear in the proceedings of "Galaxies in the Local Volume", Astrophysics and Space Science, editors B. Koribalski and H. Jerjen
Atypical Imperative constructions: The case of YOU DO THAT
Creators: name: Geka, Vassiliki
Publisher: name: Constructions
Year: 2023

description: The interactional centrality of the Imperative, its semantic-pragmatic versatility, and its different syntactic configurations have attracted considerable scholarly interest in various linguistic paradigms. Contributing to and extending this line of investigation through a Construction Grammar (CxG) approach, the present paper focuses on atypical (i.e., non-canonical) Imperatives and their Addressee-encoding in terms of overt pronominal Subjects, referred to as OBLIGATORY SUBJECT IMPERATIVES (OSIs). In so doing, the paper calls attention to ‘you do that’ as an instance of a so-called weak Imperative with a consistent discourse-responsive scope over a previous Addressee-induced proposition /p/. In this context, ‘you do that’ will be argued to couch not the Speaker’s (S’s) intentions or wishes, as conventionally expected by an Imperative, but the S’s low endorsement of the fulfillment of /p/ made manifest in gradient forms of (disinterested) acceptance, indifference or acquiescence. In empirically sketching out the constructional account of ‘you do that’, the paper draws on synchronic, corpus-attested evidence (COCA data) to set the construction apart from its seemingly formal ‘twins’, establish and statistically validate its atypicality and tease apart its inherited and idiosyncratic properties. The paper also provides a working  profile for the possible discourse correlates of ‘you do that’ while it ultimately ventures into a discussion on the productivity of its Imperative-based licensing template.
description: Constructions, Bd. 15 Nr. 2 (2023)
Continental-scale land cover mapping at 10 m resolution over Europe (ELC10)
Creators: name: Venter, Zander S.
name: Sydenham, Markus A. K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Widely used European land cover maps such as CORINE are produced at medium spatial resolutions (100 m) and rely on diverse data with complex workflows requiring significant institutional capacity. We present a high resolution (10 m) land cover map (ELC10) of Europe based on a satellite-driven machine learning workflow that is annually updatable. A Random Forest classification model was trained on 70K ground-truth points from the LUCAS (Land Use/Cover Area frame Survey) dataset. Within the Google Earth Engine cloud computing environment, the ELC10 map can be generated from approx. 700 TB of Sentinel imagery within approx. 4 days from a single research user account. The map achieved an overall accuracy of 90% across 8 land cover classes and could account for statistical unit land cover proportions within 3.9% (R2 = 0.83) of the actual value. These accuracies are higher than that of CORINE (100 m) and other 10-m land cover maps including S2GLC and FROM-GLC10. We found that atmospheric correction of Sentinel-2 and speckle filtering of Sentinel-1 imagery had minimal effect on enhancing classification accuracy (< 1%). However, combining optical and radar imagery increased accuracy by 3% compared to Sentinel-2 alone and by 10% compared to Sentinel-1 alone. The conversion of LUCAS points into homogenous polygons under the Copernicus module increased accuracy by <1%, revealing that Random Forests are robust against contaminated training data. Furthermore, the model requires very little training data to achieve moderate accuracies - the difference between 5K and 50K LUCAS points is only 3% (86 vs 89%). At 10-m resolution, the ELC10 map can distinguish detailed landscape features like hedgerows and gardens, and therefore holds potential for aerial statistics at the city borough level and monitoring property-level environmental interventions (e.g. tree planting).
Work statistics across a quantum critical surface
Creators: name: Zhang, Fan
name: Quan, H. T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the universality of work statistics of a system quenched through a quantum critical surface. By using the adiabatic perturbation theory, we obtain the general scaling behavior for all cumulants of work. These results extend the studies of Kibble-Zurek mechanism scaling of work statistics from an isolated quantum critical point to a critical surface. As an example, we study the scaling behavior of work statistics in the two-dimensional (2D) Kitaev honeycomb model featured with a critical line. By utilizing the trace formula for quadratic fermionic Hamiltonian, we obtain the exact characteristic function of work of the 2D Kitaev model at zero temperature. The results confirm our prediction.
A litmus test for Lambda
Creators: name: Zunckel, Caroline
name: Clarkson, Chris
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The critical issue in cosmology today lies in determining if the cosmological constant is the underlying ingredient of dark energy. Our profound lack of understanding of the physics of dark energy places severe constrains on our ability to say anything about its possible dynamical nature. Quoted errors on the equation of state, w(z), are so heavily dependent on necessarily over-simplified parameterisations they are at risk of being rendered meaningless. Moreover, the existence of degeneracies between the reconstructed w(z) and the matter and curvature densities weakens any conclusions still further. We propose consistency tests for the cosmological constant which provide a direct observational signal if Lambda is wrong, regardless of the densities of matter and curvature. As an example of its utility, our flat case test can warn of a small transition from w(z)=-1 of 20% from SNAP quality data at 4-sigma, even when direct reconstruction techniques see virtually no evidence for deviation from Lambda. It is shown to successfully rule out a wide range of non-Lambda dark energy models with no reliance on knowledge of Omega_m using SNAP-quality data and a large range for using 10^5 supernovae as forecasted for LSST.
description: 4 pages, 2 figures
Escherichia coli Castellani & Chalmers 1919
Creators: name: Zhang, Chi
name: Chen, Xinlu
name: Crandall-Stotler, Barbara
name: Qian, Ping
name: Köllner, Tobias G.
name: Guo, Hong
name: Chen, Feng
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Bacteria
Proteobacteria
Gammaproteobacteria
Enterobacteriales
Enterobacteriaceae
Escherichia
Escherichia coli

description: 2.3. Biochemical characterization of CsSABATHs expressed in E. coli
Gene expression analysis (Fig. 3) suggested that CsSABATH2, CsSABATH4 and CsSABATH6 are the most probable candidates as CAMT. To validate this prediction, we characterized the proteins encoded by all six CsSABATH genes using a biochemical approach. Full-length cDNA for each of the six CsSABATH genes was cloned by RT-PCR into a protein expression vector without any tag and expressed in E. coli to produce recombinant proteins. Each of the recombinant CsSABATH enzymes was assayed with (E)-cinnamic acid and an additional nine carboxyl acids: indole-3-acetic acid, gibberellin A3, salicylic acid, jasmonic acid, anthranilic acid, nicotinic acid, benzoic acid, p -coumaric acid and abscisic acid (Table 1). Among the six CsSABATHs, CsSABATH6 was highly active using (E)-cinnamic acid as substrate. It also showed activity with benzoic acid and p -coumaric acid, which was about 32% and 18% of the activity with (E)-cinnamic acid. CsSABATH4 also showed some activity with (E)-cinnamic acid, but the activity was very low. Instead, CsSABATH4 was most active with salicylic acid as substrate. Its activity with (E)-cinnamic acid was only about 6% of that with salicylic acid. CsSABATH6 and CsSABATH4 were renamed CsCAMT (GenBank accession no. MK673137) and CsSAMT (GeneBank accession no. MK673138), respectively. CsSABATH1, CsSABATH2, CsSABATH3 and CsSABATH5 did not show activity with any of the substrates tested.
description: Published as part of Zhang, Chi, Chen, Xinlu, Crandall-Stotler, Barbara, Qian, Ping, Köllner, Tobias G., Guo, Hong & Chen, Feng, 2019, Biosynthesis of methyl (E) - cinnamate in the liverwort Conocephalum salebrosum and evolution of cinnamic acid methyltransferase, pp. 50-59 in Phytochemistry 164 on page 53, DOI: 10.1016/j.phytochem.2019.04.013, http://zenodo.org/record/10483032
Pion freeze-out through HBT correlation in HICs from AGS/FAIR to RHIC energies
Creators: name: Li, Qingfeng
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this talk we present the results of two-pion HBT correlation at freeze-out in heavy ion collisions (HICs) from AGS to RHIC energies. The UrQMD hadron-string transport model as well as the CRAB analyzing program are adopted. Based on the cascade mode, in general, the calculations are satisfying and well in line with the experimental data although discrepancies are not negligible. Such as: I), the HBT time-related puzzle exists at all energies. II), at low AGS energies, the calculated volume as well as the mean free path of pion source at freeze-out are lower than data. It implies that a better description of interactions of particles at early stage of HICs is required.
description: 10 pages, 6 figs. For PoS CPOD2007, July 9-13, GSI,Germany
Durability of Styrene-Butadiene Latex Modified Cement Concrete
Creators: name: SWARNKAR, PRAFULL
Publisher: name: figshare
Year: 2021
Subjects: subject: 90599 Civil Engineering not elsewhere classified
subject: FOS: Civil engineering
subject: 90502 Construction Engineering
subject: 90503 Construction Materials

description: Polymer Modified Concrete (P.M.C.) has been discovered to be more potent than conventional cement because of its excellent strength and raised perseverance, so to enhance the performance, certain polymers are blended in with concrete. The impact of Styrene Butadiene Rubber (S.B.R.) over the compressive strengths, tensile strengths and carbonation of cement has been examined in this investigation, and the ideal polymer content for concrete has additionally been resolved. This examination was attempted to decide the impacts of polymer expansion on compressive and tensile strengths utilizing concrete at nearby ambient temperature with a consistent water- cement proportion blend design. The mixes were prepared with a 0 %, 5 %, 10 %, 15 % and 20 % cement-latex ratio of Styrene-Butadiene Rubber. The fresh concrete slump test was performed while the compressive and tensile strengths were analyzed at various ages. S.B.R. latex has been appeared to have an unfavourable effect at an early age, even though applying S.B.R. latex to concrete at 28 days brings about improved compressive and tensile strength. However, In the current paper, workability, impact, carbonation and acid resistance tests are performed.
Effects of log storage on zooplankton and juvenile salmonids in Babine Lake, British Columbia
Creators: name: Power, Elizabeth A.
Publisher: name: University of British Columbia
Year: 2010

description: Effects of log storage on water quality, zooplankton and juvenile salmonids were investigated at Babine Lake, British Columbia in a series of enclosure, field and laboratory experiments. Enclosures were stocked with lake zooplankton and treated with lodgepole pine (Pinus Contorta) and white spruce (Picea glauca) logs for two 25 day periods. Oxygen depletion, to levels as low as 2.5 mg/l, and increased lignin and tannin (L-T) concentration (a measure of wood leachate) occurred in log treated enclosures. Zooplankton density significantly decreased with increased log number, but changes in community diversity were not consistent. In field studies at Morrison Arm, Babine Lake, extreme oxygen depletion (<1 mg/l) was observed in localized surface waters within a log storage area. Dye tracer studies within the log bundles implied reduced water movement, which may be involved in oxygen depletion. Local zooplankton abundance was usually lower at log storage sites than nearby undisturbed littoral sites and sockeye fry held in situ for 24 h periods acquired fewer and/or a lower diversity of prey items in log storage areas. Laboratory toxicity studies indicated that spruce bark leachates were more toxic than pine, but lethally toxic bark leachates had higher L-T values than those measured in the Morrison Arm log storage area. In chronic Daphnia bioassays, mortality rates significantly increased and fecundity rates significantly decreased during long term exposure to low concentrations of bark leachates. Results of enclosure experiments, field studies and laboratory bioassays provide evidence that zooplankton are reduced in abundance by conditions which accompany log storage, possibly through chronic toxicity or reduce fecundity. Because fry diet was sensitive to small changes in food abundance, there is potential for reduced survival of sockeye fry exposed to low oxygen concentrations and reduced food levels.
The Actuator Line Model in Lattice Boltzmann Frameworks  - Wake Characteristics and Turbulence Modelling
Creators: name: Asmuth, Henrik
name: Ivanell, Stefan
name: Espinosa, Hugo Olivares
name: Nilsson, Karl
Publisher: name: Zenodo
Year: 2019
Subjects: Wind Energy
Lattice Boltzmann Method
GPU
Actuator Line
Large eddy simulation
WESC2019

description: Presentation of the WESC 2019 conference. Further details to be published in the referring special issue in Wind Energy Science.
On the isolated singularities of the solutions of the Gaussian curvature equation for nonnegative curvature
Creators: name: Kraus, Daniela
name: Roth, Oliver
Publisher: name: arXiv
Year: 2008
Subjects: subject: Analysis of PDEs (math.AP)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 35J60; 32F45; 53A30

description: The precise asymptotic behaviour of the solutions to the twodimensional curvature equation $Δu=k(z) e^{2 u}$ with $e^{2 u} \in L^1$ for bounded nonnegative curvature functions $-k(z)$ near isolated singularities is obtained.
Duality in elliptic Ruijsenaars system and elliptic symmetric functions
Creators: name: Mironov, A.
name: Morozov, A.
name: Zenkevich, Y.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We demonstrate that the symmetric elliptic polynomials $E_λ(x)$ originally discovered in the study of generalized Noumi-Shiraishi functions are eigenfunctions of the elliptic Ruijsenaars-Schneider (eRS) Hamiltonians that act on the mother function variable $y_i$ (substitute of the Young-diagram variable $λ$). This means they are eigenfunctions of the dual eRS system. At the same time, their orthogonal complements in the Schur scalar product, $P_R(x)$ are eigenfunctions of the elliptic reduction of the Koroteev-Shakirov (KS) Hamiltonians. This means that these latter are related to the dual eRS Hamiltonians by a somewhat mysterious orthogonality transformation, which is well defined only on the full space of time variables, while the coordinates $x_i$ appear only after the Miwa transform. This observation explains the difficulties with getting the apparently self-dual Hamiltonians from the double elliptic version of the KS Hamiltonians.
description: 15 pages
Axiom System and Completeness Expression for Quantum Mechanics
Creators: name: Held, Carsten
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The standard axiomatization of quantum mechanics (QM) is not fully explicit about the role of the time-parameter. Especially, the time reference within the probability algorithm (the Born Rule, BR) is unclear. Using a plausible principle P1, about the role of probability in a physical theory, and a second principle P2 affording a most natural way to make BR precise, a logical conflict with the standard expression for the completeness of QM can be derived. Rejecting P1 is implausible. Rejecting P2 leads to unphysical results and to a conflict with a generalization of P2, a principle P3. It is thus made plausible that the standard expression of QM completeness must be revised. An absolutely explicit form of the axioms is provided, including a precise form of the projection postulate. An appropriate expression for QM completeness, reflecting the restrictions of the Gleason and Kochen-Specker theorems is proposed.
description: 20 pages, no figures
title: Exploring applicability of learner autonomy in Turkish EFL classrooms: how is learner autonomy perceived and practised in Turkish EFL classrooms at high school level?
Creators: name: Kocar, Eda
Publisher: name: University of Glasgow
Year: 2020
Subjects: subject: learner autonomy, EFL.

description: In the Turkish context, the notion of learner autonomy has received increasing interest nationwide in the last decade through the efforts of the Ministry of Education. This research aimed to investigate and compare the applicability of learner autonomy in Turkish EFL classrooms in state and private schools at high school level. The findings of the current study reveal and compare Turkish EFL teachers’ understandings of learner autonomy and their practices in this area, including beyond the private and state school settings. Similarly, this research helps us to understand Turkish EFL students’ interpretations of and practices in learner autonomy. The participant of present study consisted of 20 EFL teachers and 66 students in 9th grade from private and state schools in one of the Turkish cities. Data were collected by using semi-structured interviews, focus groups and classroom observations. The data revealed that most of the participating teachers in state and private schools expressed some views about learner autonomy, however, many of the participants’ views were not clear and consistent. Also, the current study revealed some alignments and mismatches between teachers’ interpretations of learner autonomy and their practices relating to it. The data also indicated that, while some of the students share their interpretations of learner autonomy, as their teachers do, the rest of the students unfortunately do not have a clear understanding of learner autonomy. Moreover, the current research found that students in private and state schools engaged in autonomous learning activities.
Light-induced dimension crossover in 1T-TiSe$_2$ dictated by excitonic correlations
Creators: name: Cheng, Yun
name: Zong, Alfred
name: Li, Jun
name: Xia, Wei
name: Duan, Shaofeng
name: Zhao, Wenxuan
name: Li, Yidian
name: Qi, Fengfeng
name: Wu, Jun
name: Zhao, Lingrong
name: Zhu, Pengfei
name: Zou, Xiao
name: Jiang, Tao
name: Guo, Yanfeng
name: Yang, Lexian
name: Qian, Dong
name: Zhang, Wentao
name: Kogar, Anshul
name: Zuerch, Michael W.
name: Xiang, Dao
name: Zhang, Jie
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In low-dimensional systems with strong electronic correlations, the application of an ultrashort laser pulse often yields novel phases that are otherwise inaccessible. The central challenge in understanding such phenomena is to determine how dimensionality and many-body correlations together govern the pathway of a non-adiabatic transition. To this end, we examine a layered compound, 1T-TiSe$_2$, whose three-dimensional charge-density-wave (3D CDW) state also features exciton condensation due to strong electron-hole interactions. We find that photoexcitation suppresses the equilibrium 3D CDW while creating a nonequilibrium 2D CDW. Remarkably, the dimension reduction does not occur unless bound electron-hole pairs are broken. This relation suggests that excitonic correlations maintain the out-of-plane CDW coherence, settling a long-standing debate over their role in the CDW transition. Our findings demonstrate how optical manipulation of electronic interaction enables one to control the dimensionality of a broken-symmetry order, paving the way for realizing other emergent states in strongly correlated systems.
Reshaping the Smart City through Civic Interventions
Creators: name: Van Oudheusden, Michiel
Publisher: name: Apollo - University of Cambridge Repository
Year: 2020
Subjects: Citizen
Democracy
Digital
Smart City
Intervention

description: Smart cities are rapidly emerging across the globe in ways that change how we know, plan, and govern urban space and city life. But what is smart about the smart city? What is new about it? How precisely is the smart city shaped, managed, and governed? And how do its inhabitants engage with smart city policies and processes? In this presentation, I seek to shed light on these questions using empirical illustrations of smart city policies and practices in Europe and elsewhere. In this process, I will explore the underlying assumptions, promises, and stakes that guide smart city developments, including the originality of integrating sensors and devices into our everyday surroundings. I will also pay specific attention to how citizens intervene in these surroundings, often mundanely and on a small scale, and in manners that intentionally or inadvertently slow down or counteract dominant renditions of ‘smartness.’ These interventions, which take the form of activist and artistic intrusions, citizen science initiatives, and ‘technology assessments’ mediated by social scientists, disturb the smooth technoptimism inscribed in official smart city visions and architectures. Building on these examples, I will argue two interrelated points: 1) official policy and strategic representations of the smart city as a joyous, tranquil space that actively engages citizens and businesses (e.g., EC 2019) fail to capture how smart environments are democratized and potentially reshaped through civic contestation; 2) while sterile and overly optimistic, these dominant representations also open a space for agonistic civic political action, and may even constitute the very conditions of civic intervention and democratic change – a point which is lost on many critical scholars.
Strength analysis of styrene-butadiene latex modified cement concrete
Creators: name: SWARNKAR, PRAFULL
Publisher: name: figshare
Year: 2021
Subjects: subject: 90599 Civil Engineering not elsewhere classified
subject: FOS: Civil engineering
subject: 91202 Composite and Hybrid Materials
subject: FOS: Materials engineering
subject: 90502 Construction Engineering
subject: 90503 Construction Materials

description: Polymer Modified Concrete (P.M.C.) has been discovered to be more potent than conventional cement because of its excellent strength and raised perseverance, so to enhance the performance, certain polymers are blended in with concrete. The impact of Styrene Butadiene Rubber (S.B.R.) over the compressive strengths, tensile strengths and carbonation of cement has been examined in this investigation, and the ideal polymer content for concrete has additionally been resolved. This examination was attempted to decide the impacts of polymer expansion on compressive and tensile strengths utilizing concrete at nearby ambient temperature with a consistent water-cement proportion blend design. The mixes were prepared with a 0 %, 5 %, 10 %, 15 % and 20 % cement- latex ratio of Styrene-Butadiene Rubber. The fresh concrete slump test was performed while the compressive and tensile strengths were analyzed at various ages. S.B.R. latex has been appeared to have an unfavourable effect at an early age, even though applying S.B.R. latex to concrete at 28 days brings about improved compressive and tensile strength. However, the dosage of S.B.R. latex for mixtures rich in cement needs to be optimized in order to preserve the desired concrete workability.
On the blow up phenomenon for the $L^2$-critical focusing Hartree equation in $\Bbb R^4$
Creators: name: Miao, Changxing
name: Xu, Guixiang
name: Zhao, Lifeng
Publisher: name: arXiv
Year: 2007
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35Q40, 35Q55, 47J35

description: We characterize the dynamics of the finite time blow up solutions with minimal mass for the focusing mass critical Hartree equation with $H^1(\mathbb{R}^4)$ data and $L^2(\mathbb{R}^4)$ data, where we make use of the refined Gagliardo-Nirenberg inequality of convolution type and the profile decomposition. Moreover, we also analyze the mass concentration phenomenon of such blow up solutions.
description: 25pages
Electron self-energy in the presence of magnetic field: hyperfine splitting and g factor
Creators: name: Yerokhin, V. A.
name: Jentschura, U. D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: A high-precision numerical calculation is reported for the self-energy correction to the hyperfine splitting and to the bound-electron g factor in hydrogenlike ions with low nuclear charge numbers. The binding nuclear Coulomb field is treated to all orders, and the nonperturbative remainder beyond the known $Zα$-expansion coefficients is determined. For the $^3{\rm He}^+$ ion, the nonperturbative remainder yields a contribution of -450 Hz to the normalized difference of the 1S and 2S hyperfine-structure intervals, to be compared with the experimental uncertainty of 71 Hz and with the theoretical error of 50 Hz due to other contributions. In the case of the g factor, the calculation provides the most stringent test of equivalence of the perturbative and nonperturbative approaches reported so far in the bound-state QED calculations.
description: 4 pages, 1 figure
Complementarity in the Einstein-Bohr Photon Box
Creators: name: Dieks, Dennis
name: Lam, Sander
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The photon box thought experiment can be considered a forerunner of the EPR-experiment: by performing suitable measurements on the box it is possible to ``prepare'' the photon, long after it has escaped, in either of two complementary states. Consistency requires that the corresponding box measurements be complementary as well. At first sight it seems, however, that these measurements can be jointly performed with arbitrary precision: they pertain to different systems (the center of mass of the box and an internal clock, respectively). But this is deceptive. As we show by explicit calculation, although the relevant quantities are simultaneously measurable, they develop non-vanishing commutators when calculated back to the time of escape of the photon. This justifies Bohr's qualitative arguments in a precise way; and it illustrates how the details of the dynamics conspire to guarantee the requirements of complementarity. In addition, our calculations exhibit a ``fine structure'' in the distribution of the uncertainties over the complementary quantities: depending on when the box measurement is performed, the resulting quantum description of the photon differs. This brings us close to the argumentation of the later EPR thought experiment.
Aging dynamics of non-linear elastic interfaces: the Kardar-Parisi-Zhang equation
Creators: name: Bustingorry, Sebastian
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this work, the out-of-equilibrium dynamics of the Kardar-Parisi-Zhang equation in (1+1) dimensions is studied by means of numerical simulations, focussing on the two-times evolution of an interface in the absence of any disordered environment. This work shows that even in this simple case, a rich aging behavior develops. A multiplicative aging scenario for the two-times roughness of the system is observed, characterized by the same growth exponent as in the stationary regime. The analysis permits the identification of the relevant growing correlation length, accounting for the important scaling variables in the system. The distribution function of the two-times roughness is also computed and described in terms of a generalized scaling relation. These results give good insight into the glassy dynamics of the important case of a non-linear elastic line in a disordered medium.
description: 14 pages, 6 figures
MATPOWER Interior Point Solver (MIPS) User's Manual
Creators: name: Zimmerman, Ray D.
name: Wang, Hongye
Publisher: name: Zenodo
Year: 2019
Subjects: nonlinear programming
optimization

description: This is the User's Manual for the MATPOWER Interior Point Solver (MIPS), a package of MATLAB/Octave M-files for solving non-linear programming problems (NLPs) using a primal dual interior point method. MIPS is based on code written in C language by Hongye Wang as a graduate student at Cornell University for optimal power flow applications. It was later ported to the MATLAB/Octave language by Ray D. Zimmerman for use in MATPOWER.
description: {"references": ["H. Wang, C. E. Murillo-S\u00e1nchez, R. D. Zimmerman, R. J. Thomas, \"On Computational Issues of Market-Based Optimal Power Flow,\" Power Systems, IEEE Transactions on, vol. 22, no. 3, pp. 1185-1193, Aug. 2007. doi: 10.1109/TPWRS.2007.901301."]}
Glasma flux tubes and the near side ridge phenomenon at RHIC
Creators: name: Dumitru, Adrian
name: Gelis, Francois
name: McLerran, Larry
name: Venugopalan, Raju
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate the consequences of long range rapidity correlations in the Glasma. Particles produced locally in the transverse plane are correlated by approximately boost invariant flux tubes of longitudinal color electric and magnetic fields that are formed when two sheets of Colored Glass Condensate pass through one another, each acquiring a modified color charge density in the collision. We argue that such long range rapidity correlations persist during the evolution of the Quark Gluon Plasma formed later in the collision. When combined with transverse flow, these correlations reproduce many of the features of the recently observed ridge events in heavy ion collisions at RHIC.
description: 24 pages, 15 postscript figures
PowerPoint template
Creators: name: Ma, Yuet Kwan
name: Choi, Cherry
name: Yeung, Pui Sze
Publisher: name: HKU Data Repository
Year: 2023
Subjects: classificationCode: 390411
subject: Special education and disability
classificationCode: 390407
subject: Inclusive education
classificationCode: 390303
subject: Higher education
classificationCode: 460105
subject: Applications in social sciences and education

description: Accessibility designs in this PowerPoint template:Having a slide title on each slideReading order of pre-formatted slide items (“placeholders”): Slide title will be read first. Other items will be read basically from top to bottom, and from left to right.Formatted font, font size, bullet points and numbered listsColour scheme with sufficient colour contrast between text, hyperlinks, and backgroundReserved frame for captions at the bottom of slideInstructions to use this PowerPoint template:Go through the sample slides for the important instruction to use this template.Note that this template does not guarantee “full accessibility”.Go to the video on enhancing accessibility of PowerPoint and the video on the creation and use of templates for more information.This PowerPoint template is one of the deliverables of the Project entitled “Promoting accessibility of virtual teaching and learning through a train-the-trainer approach” funded by the UGC Special Grant for Strategic Development of Virtual Teaching and Learning in 2021-2023.Suggested citation:Ma, G. Y. K., Choi, C., & Yeung, P. P. S. (2023). PowerPoint template. IDEALeaders Self-learning Series: Co-creation of virtual learning accessibility. HKU Data Repository. https://doi.org/10.25442/hku.22683433Virtual Learning Accessibility Toolkit: PDF version and Website versionPoints to note:This work is intended to serve as a general guide for enhancing the accessibility of PowerPoint slides. The recommended practices in this work are not exhaustive or best solutions. This work does not necessarily guarantee “full accessibility”. This work is created for knowledge exchange and educational purposes. Teaching and learning practices might vary across academic disciplines, as well as individual preferences and needs. The recommended practices need to be fit and applied to various disciplinary contexts and authentic practices.Please be aware that fulfilling all the practices suggested by this work would not guarantee “full accessibility”. Use your own best judgment. Always be aware of and respect the diverse access needs of different individuals.This work does not contain any business promotion elements.Software, programmes, and operating systems are constantly and rapidly developing along with changing accessibility functions. Statements in this work about the functions of any software, programmes, and operating systems may no longer represent their current status.It is possible that the hyperlinks of the cited resources in this work might be edited or removed by the corresponding contributors after the publication of this work.
Canted antiferromagnetic order and spin dynamics in the honeycomb-lattice Tb2Ir3Ga9
Creators: name: Ye, Feng
name: Morgan, Zachary
name: Tian, Wei
name: Chi, Songxue
name: Wang, Xiaoping
name: Manley, Michael E.
name: Parker, David
name: Khan, Mojammel A.
name: Mitchell, J. F.
name: Fishman, Randy
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Single crystal neutron diffraction, inelastic neutron scattering, bulk magnetization measurements, and first-principles calculations are used to investigate the magnetic properties of the honeycomb lattice $\rm Tb_2Ir_3Ga_9$. While the $R\ln2$ magnetic contribution to the low-temperature entropy indicates a $\rm J_{eff}=1/2$ moment for the lowest-energy crystal-field doublet, the Tb$^{3+}$ ions form a canted antiferromagnetic structure below 12.5 K. Due to the Dzyalloshinskii-Moriya interactions, the Tb moments in the $ab$ plane are slightly canted towards $b$ by $6^\circ$ with a canted moment of 1.22 $μ_{\rm B} $ per formula unit. A minimal $xxz$ spin Hamiltonian is used to simultaneously fit the spin-wave frequencies along the high symmetry directions and the field dependence of the magnetization along the three crystallographic axes. Long-range magnetic interactions for both in-plane and out-of-plane couplings up to the second nearest neighbors are needed to account for the observed static and dynamic properties. The $z$ component of the exchange interactions between Tb moments are larger than the $x$ and $y$ components. This compound also exhibits bond-dependent exchange with negligible nearest exchange coupling between moments parallel and perpendicular to the 4$f$ orbitals. Despite the $J_{\rm eff}=1/2$ moments, the spin Hamiltonian is denominated by a large in-plane anisotropy $K_z \sim -1$ meV. DFT calculations confirm the antiferromagnetic ground state and the substantial inter-plane coupling at larger Tb-Tb distances.
description: 6 figures
PowerPoint template
Creators: name: Ma, Yuet Kwan
name: Choi, Cherry
name: Yeung, Pui Sze
Publisher: name: HKU Data Repository
Year: 2023
Subjects: classificationCode: 390411
subject: Special education and disability
classificationCode: 390407
subject: Inclusive education
classificationCode: 390303
subject: Higher education
classificationCode: 460105
subject: Applications in social sciences and education

description: Accessibility designs in this PowerPoint template:

 Having a slide title on each slide
 Reading order of pre-formatted slide items (“placeholders”): Slide title will be read first. Other items will be read basically from top to bottom, and from left to right.
 Formatted font, font size, bullet points and numbered lists
 Colour scheme with sufficient colour contrast between text, hyperlinks, and background
 Reserved frame for captions at the bottom of slide

Instructions to use this PowerPoint template:

 Go through the sample slides for the important instruction to use this template.
 Note that this template does not guarantee “full accessibility”.
 Go to the video on enhancing accessibility of PowerPoint for more information.

This PowerPoint template is one of the deliverables of the Project entitled “Promoting accessibility of virtual teaching and learning through a train-the-trainer approach” funded by the UGC Special Grant for Strategic Development of Virtual Teaching and Learning in 2021-2023.
Suggested citation:
Ma, G. Y. K., Choi, C., & Yeung, P. P. S. (2023). PowerPoint template [.pptx file]. #IDEALeaders Self-learning Series: Co-creation of virtual learning accessibility. HKU Data Repository. https://doi.org/10.25442/hku.22683433
Virtual Learning Accessibility Toolkit: PDF version and Website version
Points to note:

 This work is intended to serve as a general guide for enhancing the accessibility of PowerPoint slides. The recommended practices in this work are not exhaustive or best solutions. This work does not necessarily guarantee “full accessibility”. This work is created for knowledge exchange and educational purposes. Teaching and learning practices might vary across academic disciplines, as well as individual preferences and needs. The recommended practices need to be fit and applied to various disciplinary contexts and authentic practices.
 Please be aware that fulfilling all the practices suggested by this work would not guarantee “full accessibility”. Use your own best judgment. Always be aware of and respect the diverse access needs of different individuals.
 This work does not contain any business promotion elements.
 Software, programmes, and operating systems are constantly and rapidly developing along with changing accessibility functions. Statements in this work about the functions of any software, programmes, and operating systems may no longer represent their current status.
 It is possible that the hyperlinks of the cited resources in this work might be edited or removed by the corresponding contributors after the publication of this work.
ViT-ResNet Assessment of Breast Density from MRI
Creators: name: Meysam, Khalaj
name: Arvin, Arian
name: Ala, Torabi
name: Nasrin, Ahmadinejad
name: Masoumeh, Gity
name: Seyedeh Nooshin, Miratashi Yazdi
name: Mohammad Pooya, Afshari
name: Melika, Sadeghi Tabrizi
name: Hamid, Soltanian-Zadeh
Publisher: name: Zenodo
Year: 2025

description: This poster was presented at the 7th International Conference on Pattern Recognition and Image Analysis (IPRIA 2025, IEEE Conference). It summarizes the study "ViT-ResNet Assessment of Breast Density from MRI," which explores the use of a hybrid Vision Transformer and ResNet model for automated breast density classification from MRI scans. The poster highlights the study’s motivation, methodology, experimental setup, and key findings. Designed to visually communicate the research to a broad academic audience, the poster supports knowledge dissemination in the fields of medical imaging and deep learning.
Spin-torque induced wall motion in perpendicularly magnetized discs: ballistic versus oscillatory behavior
Creators: name: Bouquin, Paul
name: Kim, Joo-Von
name: Bultynck, Olivier
name: Rao, Siddharth
name: Couet, Sebastien
name: Kar, Gouri Sankar
name: Devolder, Thibaut
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We use time-resolved measurement and modeling to study the spin-torque induced motion of a domain wall in perpendicular anisotropy magnets. In disc of diameters between 70 and 100 nm, the wall drifts across the disc with pronounced back-and-forth oscillations that arise because the wall moves in the Walker regime. Several switching paths occur stochastically and lead to distinct switching durations. The wall can cross the disc center either in a ballistic manner or with variably marked oscillations before and after the crossing. The crossing of the center can even occur multiple times if a vertical Bloch line nucleates within the wall. The wall motion is analyzed using a collective coordinate model parametrized by the wall position $q$ and the tilt $ϕ$ of its in-plane magnetization projection. The dynamics results from the stretch field, which describes the affinity of the wall to reduce its length and the wall stiffness field describing the wall tendency to reduce dipolar energy by rotating its tilt. The wall oscillations result from the continuous exchange of energy between to the two degrees of freedom $q$ and $ϕ$. The stochasticity of the wall dynamics can be understood from the concept of the retention pond: a region in the $q-ϕ$ space in which walls are transiently bound to the disc center. Walls having trajectories close to the pond must circumvent it and therefore have longer propagation times. The retention pond disappears for a disc diameter of typically 40 nm: the wall then moves in a ballistic manner irrespective of the dynamics of its tilt. The propagation time is then robust against fluctuations hence reproducible.
description: submitted to Phys. Rev. B
O uso do aplicativo "Atlas Água e Esgotos" em disciplinas relacionadas à gestão de recursos hídricos
Creators: name: Esther Moura Moreira
name: and others
Publisher: name: Zenodo
Year: 2023

description: R E S U M OO ciclo do uso da água envolve a utilização dela pela sociedade através de redes técnicas de abastecimento, bem como a sua transformação após o consumo. Portanto, o objetivo deste trabalho é avaliar o potencial do aplicativo “Atlas Água e Esgotos” como ferramenta didática para a disciplina de Hidrogeografia, a fim de abordar o ciclo do uso da água e a questão da escassez hídrica. Foi desenvolvida uma atividade avaliativa com alunos do 3° período da disciplina de Hidrogeografia do curso de Geografia. A partir do aplicativo, foi solicitado aos estudantes que descrevessem as seguintes informações: percentual da população urbana do estado e do município escolhido; tipos de sistema de abastecimento; tipos de mananciais utilizados; demanda de água urbana (no município); prestador de serviço; situação de abastecimento que o município está inserido; e analisar o croqui de abastecimento disponível. A análise de desempenho da atividade demonstrou a potencialidade do aplicativo para fins didáticos, uma vez que mais de 80% dos estudantes demonstraram a relação entre aspectos conceituais do ciclo do uso da água com os dados disponibilizados pelo aplicativo. Porém, quase metade dos estudantes demonstraram dificuldade com relação a análise dos croquis de abastecimento, refletindo provavelmente uma dificuldade na leitura e compreensão da legenda específica sobre as redes técnicas de abastecimento. Contudo, o aplicativo “Atlas Água e Esgotos” demonstrou ser uma importante ferramenta para a divulgação e compreensão dos temas relacionados à utilização da água pela sociedade, onde a grande maioria desconhece a origem da água consumida e as redes técnicas envolvidas no abastecimento hídrico.Palavras-Chaves: Ciclo do uso da água, redes técnicas, recursos hídricos