cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Approximation of fractional integrals by means of derivatives
Creators: name: Pooseh, Shakoor
name: Almeida, Ricardo
name: Torres, Delfim F. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 26A33, 33F05

description: We obtain a new decomposition of the Riemann-Liouville operators of fractional integration as a series involving derivatives (of integer order). The new formulas are valid for functions of class $C^n$, $n \in \mathbb{N}$, and allow us to develop suitable numerical approximations with known estimations for the error. The usefulness of the obtained results, in solving fractional integral equations and fractional problems of the calculus of variations, is illustrated.
description: Submitted 15-10-2011; revised 24-01-2012; accepted 25-01-2012; for publication in Computers and Mathematics with Applications
Astrometric Image Centroid Displacements due to Gravitational Microlensing by the Ellis Wormhole
Creators: name: Toki, Yukiharu
name: Kitamura, Takao
name: Asada, Hideki
name: Abe, Fumio
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Continuing work initiated in an earlier publication (Abe, ApJ, 725 (2010) 787), we study the gravitational microlensing effects of the Ellis wormhole in the weak-field limit. First, we find a suitable coordinate transformation, such that the lens equation and analytic expressions of the lensed image positions can become much simpler than the previous ones. Second, we prove that two images always appear for the weak-field lens by the Ellis wormhole. By using these analytic results, we discuss astrometric image centroid displacements due to gravitational microlensing by the Ellis wormhole. The astrometric image centroid trajectory by the Ellis wormhole is different from the standard one by a spherical lensing object that is expressed by the Schwarzschild metric. The anomalous shift of the image centroid by the Ellis wormhole lens is smaller than that by the Schwarzschild lens, provided that the impact parameter and the Einstein ring radius are the same. Therefore, the lensed image centroid by the Ellis wormhole moves slower. Such a difference, though it is very small, will be in principle applicable for detecting or constraining the Ellis wormhole by using future high-precision astrometry observations. In particular, the image centroid position gives us an additional information, so that the parameter degeneracy existing in photometric microlensing can be partially broken. The anomalous shift reaches the order of a few micro arcsec. if our galaxy hosts a wormhole with throat radius larger than $10^5$ km. When the source moves tangentially to the Einstein ring for instance, the maximum position shift of the image centroid by the Ellis wormhole is 0.18 normalized by the Einstein ring radius. For the same source trajectory, the maximum difference between the centroid displacement by the Ellis wormhole lens and that by the Schwarzschild one is -0.16 in the units of the Einstein radius.
description: 29 pages, 6 figures, 2 tables, accepted by ApJ
Are sustainable drainage systems (SuDS) systems effective at retaining dissolved trace elements?
Creators: name: Humphrey, Jasmine
name: Rowett, Chris
name: Tyers, Jonathan
name: Gregson, Mark
name: Comber, Sean
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Space Science
subject: Neuroscience
subject: Biotechnology
subject: Geology
subject: FOS: Earth and related environmental sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Plant Biology
subject: 60506 Virology

description: Sustainable drainage systems (SuDS) are increasingly deployed to mitigate against increased trace element contaminant loads associated with urban and road runoff. However, there is a lack of research on their capabilities in removing these trace elements, particularly from the dissolved phase. Water samples were taken, following various rainfall events, from three different SuDS in Devon; one wetland pond adjacent to a busy dual carriageway, a new SuDS serving a housing estate and an established SuDS draining a mixed housing/light industrial area. A total of 15 elements were studied over the course of six rain events including the first flush of runoff. Removal rates varied within and between rain events as well as between types of SuDS. Although there was a general (modest) removal of dissolved elements within any given SuDS, this was not the case for all of the elements studied. Highest observed element concentrations entering the SuDS occurred at the onset of a rain event (first flush), the intensity of which, was related to the antecedent dry period. During high flows associated with intense rainfall, the SuDS could also act as a source of trace elements associated with fine particulates (e.g. lead) owing to resuspension of fine particulate material. Mature ponds with an abundance of macrophytes help retain solids and particulate metals, however poor maintenance leading to successional growth of shrubs and trees, reduces the efficiency of metal removal. This study highlighted the importance of long term management planning to be included within any SuDs scheme.
Processing and Stability of Conducting Polymers
Creators: name: Cheah, Kenneth
Publisher: name: Monash University
Year: 2019
Subjects: subject: 91299 Materials Engineering not elsewhere classified
subject: FOS: Materials engineering

description: The thermal stability of conducting polypyrrole (PPy) and the effects of acid and base treatment on the polymer structure have been investigated. X-ray photoelectron spectroscopy (XPS), conductivity measurements, bulk elemental analysis and X-ray diffraction (XRD) were utilised to study the chemical and physical changes arising from the different treatments and subsequent thermal ageing.[…]
Precipitation in Al-Cu-Mg-Ag Alloys
Creators: name: Chester, Richard John
Publisher: name: Monash University
Year: 2019
Subjects: subject: 91299 Materials Engineering not elsewhere classified
subject: FOS: Materials engineering

description: A new phase (designated 0) which precipitates in Al-Cu-Mg-Ag alloys having high Cu:Mg ratios, is known to contribute significantly to the overall strengthening of these alloys. Indeed the conunercial alloy 201, in which this phase forms, has the highest tensile and yield strengths of all aluminium casting alloys, and may be cost effective in replacing high strength wrought alloys for certain applications. The n phase precipitates on the {111} matrix planes as hexagonal plates which may develop very high aspect ratios (up to 400:1). Li ttle is known, however, about the nucleation and growth of this phase and one of the aims of this thesis was to investigate the mechanism of precipitation of 0.
A series of alloys with 4 wt% copper and varying magnesium and silver contents was produced in order to study the characteristics of the 0 phase and determine its range of stability with respect to other precipitates that may form on ageing. The presence of 0 was detected by Transmission Electron Microscopy and selected area diffraction techniques in alloys with Cu :Mg ratios of between 15:1 and 1:1 at % although it was only found that 0 was the dominant precipitate in an alloy with a Mg:Ag ratio of 3:1 at ~ 0. Differential Scanning Calorimetry was used to fur ther investigate these alloys and one important result was that, during heating, then phase nucleates at a significantly lower temperature than other phases (8' and S') that form in Al-Cu-Mg alloys. This result (i) suggests that the 0 precipitates are energetically easier to nucleate .
Fatherhood Involvement Reference Report for No Man Left Behind: How and Why to Include Fathers in Government-Funded Parenting Strategies
Creators: name: Wells, Lana
name: Exner-Cortens, Deinera
Publisher: name: Social Work
Year: 2016

description: In December 2015, Shift released the Men and Boys Violence Prevention Project: Informing a Government of Alberta Action Plan to Engage Men and Boys to Stop Violence Against Women. One of the key priorities identified within this action plan was the need for new funding and support to increase positive fatherhood involvement as a key prevention strategy for domestic violence. To meet this need, Shift produced No Man Left Behind: How and Why to Include Fathers in Government-Funded Parenting Strategies (to download report, click on PDF below). This report draws on five different research methods to provide findings and recommendations specific to the Government of Alberta. It is our hope that this report will lead to a robust discussion along with policy, practice and investment changes throughout Alberta. For the details of the research that supported the development of this report, please see the Fatherhood Involvement Reference Report. Shift welcomes any feedback and would be pleased to present the research and recommendations to groups throughout Alberta.
LEA_D5.2 Capacity Building Seminars for LEARNTECH Accelerator Community Report
Creators: name: Coto, Marta
name: Moreira, Tânia
name: Costa, Ana
name: Soares, Joana
Publisher: name: Zenodo
Year: 2020
Subjects: PCP
PPI
Capacity building
Learning technology accelerator

description: LEA’s main goals are to accelerate knowledge transfer, dialog and awareness raising of innovation procurement within the learning technology sector. Its strategy includes multiple activities in order to achieve these goals. This report focuses in one type of these activities Capacity Building Seminars (CBS). CBS are being organised, within the LEA project, with the aim of engaging other stakeholders (especially procurers) into the LEARNTECH accelerator community and increasing their understanding on innovation procurement methods (PCP and PPI). During CBS, LEA Partners present an overview of PCP and PPI related issues and provide support materials that describe those issues in a more detailed way. In this report, we provide an overview of the external CBS organised to date, describing the contexts in which they were organised, as well as their specific content, and the feedback received from the attendees.
The Star Formation History and Dust Content in the Far Outer Disc of M31
Creators: name: Bernard, Edouard J.
name: Ferguson, Annette M. N.
name: Barker, Michael K.
name: Hidalgo, Sebastian L.
name: Ibata, Rodrigo A.
name: Irwin, Michael J.
name: Lewis, Geraint F.
name: McConnachie, Alan W.
name: Monelli, Matteo
name: Chapman, Scott C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a detailed analysis of two fields located 26 kpc (~5 scalelengths) from the centre of M31. One field samples the major axis populations--the Outer Disc field--while the other is offset by ~18' and samples the Warp in the stellar disc. The CMDs based on HST/ACS imaging reach old main-sequence turn-offs (~12.5 Gyr). We apply the CMD-fitting technique to the Warp field to reconstruct the star formation history (SFH). We find that after undergoing roughly constant SF until about 4.5 Gyr ago, there was a rapid decline in activity and then a ~1.5 Gyr lull, followed by a strong burst lasting 1.5 Gyr and responsible for 25% of the total stellar mass in this field. This burst appears to be accompanied by a decline in metallicity which could be a signature of the inflow of metal-poor gas. The onset of the burst (~3 Gyr ago) corresponds to the last close passage of M31 and M33 as predicted by detailed N-body modelling, and may have been triggered by this event. We reprocess the deep M33 outer disc field data of Barker et al. (2011) in order to compare consistently-derived SFHs. This reveals a similar duration burst that is exactly coeval with that seen in the M31 Warp field, lending further support to the interaction hypothesis. The complex SFHs and the smoothly-varying age-metallicity relations suggest that the stellar populations observed in the far outer discs of both galaxies have largely formed in situ rather than migrated from smaller galactocentric radii. The strong differential reddening affecting the CMD of the Outer Disc field prevents derivation of the SFH. Instead, we quantify this reddening and find that the fine-scale distribution of dust precisely follows that of the HI gas. This indicates that the outer HI disc of M31 contains a substantial amount of dust and therefore suggests significant metal enrichment in these parts, consistent with inferences from our CMD analysis.
description: Abstract shortened. 17 pages, 12 figures (+ 6 pages & 5 figures in Appendix). MNRAS, in press
Fundamental study on the slip behavior of joints with high damping rubber gasket for surface leveling
Creators: name: Akamatsu, Shinsuke
name: Chen, Yu
name: Sugiura, Kunitomo
name: Yamaguchi, Takashi
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 400510
subject: Structural engineering

description: An integrated column by multiple steel pipes is a pier based on damage control design. However, if the shear panels are removed to release the residual deformation after an earthquake, the columns cannot resist horizontal forces, so another shear link must be temporarily installed. In this study, we proposed a shear link joint structure that can be easily installed and removed as a temporary member during restoration. Also, to understand the slip behavior of the joints with the proposed high damping rubber for surface leveling, a basic study was conducted using a miniature slip test specimen.
Pig farm biogas slurry can effectively reduce the pH of saline-alkali soils
Creators: name: Zhu, Yongli
name: Yuan, Gen
name: Zhao, Zihui
name: Tang, Yifan
name: Li, Pingping
name: Han, Jiangang
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer

description: Pig farm biogas slurry is being increasingly used as a potent organic fertilizer for sustainable agriculture under circular economy. However, the effect of biogas slurry on soil pH is currently controversial, and the underlying mechanisms especially in saline-alkali soils are not well understood. A saline-alkali soil (pH = 9.2, EC = 2.0 ms/cm) was selected for soil column (0–50 cm) experiments with (BS) and without (CK) addition of pig farm biogas slurry to investigate the soil pH change and its driving factors. Our results show that the soil pH under CK ranged between 9.1 and 9.5 across different soil depths. Compared to CK, the BS-treated soil had lower pH at 0–20 cm depth and higher pH at 20–30 cm depth (P < 0.01). The soil NH4+−N concentrations were negatively correlated with pH values under BS (P < 0.01), indicating that the oxidation of ammonium mainly contributed to the decrease of soil pH. Interestingly, the anions, such as Cl−, SO42− and NO3−, were accumulated in the topsoil (0–20 cm) under BS, resulting in the changed correlations of these anions with Na+ when compared to the control. FT-IR and 13C-NMR spectra uncovered that carboxyl, amide C, and total alkyl C groups may be responsible for reducing pH of the saline-alkali soil tested. The soil surface morphology confirmed a much tighter granular aggregate microstructure when mixing the biogas slurry with the soil. Overall, we concluded that from the perspective of soil pH, the utilization of biogas slurry for improving saline-alkali soil is feasible and sustainable.
Constraining the Higgs sector from False Vacua in the Next-to-Minimal Supersymmetric Standard Model
Creators: name: Kobayashi, Tatsuo
name: Shimomura, Takashi
name: Takahashi, Tsubasa
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the mass, the mixing and the coupling with $Z$ boson of the lightest Higgs boson in the next-to-minimal supersymmetric standard model. The vacuum structure of the Higgs potential is analyzed and the new false vacua are discussed. The significant parameter region can be excluded by requiring that the realistic vacuum is deeper than false vacua, which result in constraints on the properties of the lightest Higgs boson.
description: 23 pages, 8 figures
High-performance hydrophobic magnetic hydrotalcite for selective treatment of oily wastewater
Creators: name: Menino, Naiara Miotto
name: da Silveira Salla, Julia
name: do Nascimento, Mariele Samuel
name: Dallago, Rogério Marcos
name: Peralta, Rosely Aparecida
name: Moreira, Regina F. P. M.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Space Science
subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry

description: Oil emulsified in water is one of the most difficult mixtures to treat due to the good stability of emulsions, so there is a growing demand for more efficient methods for separating immiscible oil/water mixtures. In this context, the focus of this study was to obtain an adsorbent for the selective treatment of a simulated oily wastewater. To this aim, a modified hydrotalcite sample with hydrophobic and magnetic characteristics was prepared and characterized. Initially, the effect of sodium dodecyl sulfate (SDS) amount on the adsorbent characteristics was evaluated (266–800 mgSDS g−1LDH). The hydrophobic hydrotalcite (LDH-SDS) containing 533 mgSDS g−1LDH (LDH-SDS2) presented a higher interlayer space where the surfactant molecules were arranged perpendicular to the lamellae, allowing better access to the hydrotalcite pores and facilitating the selective adsorption of oil compounds. Moreover, the synergistic association of hydrophobic properties with super-wetting and effective adhesion oil to Fe3O4 favoured the selective adsorption of the simulated oily wastewater onto the hydrophobic and magnetic hydrotalcite (LDH-MSDS), facilitating the post-treatment separation. The kinetic analysis demonstrated that the adsorption equilibrium was attained in 120 min and the pseudo-second order model was the most suitable for predicting the removal of total organic carbon (TOC) from the simulated oily wastewater. The Langmuir model described very well the equilibrium experimental data, with a maximum adsorption capacity for TOC removal using LDH-MSDS of 659.9 mg g−1. Therefore, the modified hydrotalcite prepared in this study showed intrinsic characteristics that make it a promising adsorbent for the selective treatment of oily wastewaters.
Preventing Child Maltreatment: A Critical Strategy for Stopping Intimate Partner Violence in the Next Generation
Creators: name: Cooper, Merrill
name: Wells, Lana
Publisher: name: Social Work
Year: 2014

description: This paper makes the case for strengthening child maltreatment prevention efforts as a critical component of the Government of Alberta’s Family Violence Prevention Framework and the Early Childhood Strategy. A timely paper given the recent mandate letter to Minister of Human Services, Heather Klimchuk, which has a strong focus on early childhood development and poverty. The paper demonstrates the link between child maltreatment and domestic violence; provides an overview of the scope and consequences of child maltreatment; articulates the risk factors for child maltreatment; provides a description of programs and interventions that may prevent child maltreatment; and outlines key policy, research, and program recommendations to strengthen child maltreatment prevention efforts specifically in the Alberta context.
High-performance hydrophobic magnetic hydrotalcite for selective treatment of oily wastewater
Creators: name: Menino, Naiara Miotto
name: da Silveira Salla, Julia
name: Nascimento, Mariele Samuel do
name: Dallago, Rogério Marcos
name: Peralta, Rosely Aparecida
name: Moreira, Regina F. P. M.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry

description: Oil emulsified in water is one of the most difficult mixtures to treat due to the good stability of emulsions, so there is a growing demand for more efficient methods for separating immiscible oil/water mixtures. In this context, the focus of this study was to obtain an adsorbent for the selective treatment of a simulated oily wastewater. To this aim, a modified hydrotalcite sample with hydrophobic and magnetic characteristics was prepared and characterized. Initially, the effect of sodium dodecyl sulfate (SDS) amount on the adsorbent characteristics was evaluated (266–800 mgSDS g−1LDH). The hydrophobic hydrotalcite (LDH-SDS) containing 533 mgSDS g−1LDH (LDH-SDS2) presented a higher interlayer space where the surfactant molecules were arranged perpendicular to the lamellae, allowing better access to the hydrotalcite pores and facilitating the selective adsorption of oil compounds. Moreover, the synergistic association of hydrophobic properties with super-wetting and effective adhesion oil to Fe3O4 favoured the selective adsorption of the simulated oily wastewater onto the hydrophobic and magnetic hydrotalcite (LDH-MSDS), facilitating the post-treatment separation. The kinetic analysis demonstrated that the adsorption equilibrium was attained in 120 min and the pseudo-second order model was the most suitable for predicting the removal of total organic carbon (TOC) from the simulated oily wastewater. The Langmuir model described very well the equilibrium experimental data, with a maximum adsorption capacity for TOC removal using LDH-MSDS of 659.9 mg g−1. Therefore, the modified hydrotalcite prepared in this study showed intrinsic characteristics that make it a promising adsorbent for the selective treatment of oily wastewaters.
State Transfer Between a Mechanical Oscillator and Microwave Fields in the Quantum Regime
Creators: name: Palomaki, T. A.
name: Harlow, J. W.
name: Teufel, J. D.
name: Simmonds, R. W.
name: Lehnert, K. W.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recently, macroscopic mechanical oscillators have been coaxed into a regime of quantum behavior, by direct refrigeration [1] or a combination of refrigeration and laser-like cooling [2, 3]. This exciting result has encouraged notions that mechanical oscillators may perform useful functions in the processing of quantum information with superconducting circuits [1, 4-7], either by serving as a quantum memory for the ephemeral state of a microwave field or by providing a quantum interface between otherwise incompatible systems [8, 9]. As yet, the transfer of an itinerant state or propagating mode of a microwave field to and from a mechanical oscillator has not been demonstrated owing to the inability to agilely turn on and off the interaction between microwave electricity and mechanical motion. Here we demonstrate that the state of an itinerant microwave field can be coherently transferred into, stored in, and retrieved from a mechanical oscillator with amplitudes at the single quanta level. Crucially, the time to capture and to retrieve the microwave state is shorter than the quantum state lifetime of the mechanical oscillator. In this quantum regime, the mechanical oscillator can both store and transduce quantum information.
Photometric Redshift Probability Distributions for Galaxies in the SDSS DR8
Creators: name: Sheldon, Erin S.
name: Cunha, Carlos
name: Mandelbaum, Rachel
name: Brinkmann, J.
name: Weaver, Benjamin A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present redshift probability distributions for galaxies in the SDSS DR8 imaging data. We used the nearest-neighbor weighting algorithm presented in Lima et al. 2008 and Cunha et al. 2009 to derive the ensemble redshift distribution N(z), and individual redshift probability distributions P(z) for galaxies with r < 21.8. As part of this technique, we calculated weights for a set of training galaxies with known redshifts such that their density distribution in five dimensional color-magnitude space was proportional to that of the photometry-only sample, producing a nearly fair sample in that space. We then estimated the ensemble N(z) of the photometric sample by constructing a weighted histogram of the training set redshifts. We derived P(z) s for individual objects using the same technique, but limiting to training set objects from the local color-magnitude space around each photometric object. Using the P(z) for each galaxy, rather than an ensemble N(z), can reduce the statistical error in measurements that depend on the redshifts of individual galaxies. The spectroscopic training sample is substantially larger than that used for the DR7 release, and the newly added PRIMUS catalog is now the most important training set used in this analysis by a wide margin. We expect the primary source of error in the N(z) reconstruction is sample variance: the training sets are drawn from relatively small volumes of space. Using simulations we estimated the uncertainty in N(z) at a given redshift is 10-15%. The uncertainty on calculations incorporating N(z) or P(z) depends on how they are used; we discuss the case of weak lensing measurements. The P(z) catalog is publicly available from the SDSS website.
description: 29 pages, 9 figures, single column
An Integral Field Study of Abundance Gradients in Nearby LIRGs
Creators: name: Rich, J. A.
name: Torrey, P.
name: Kewley, L. J.
name: Dopita, M. A.
name: Rupke, D. S. N.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present for the first time metallicity maps generated using data from the Wide Field Spectrograph (WiFeS) on the ANU 2.3m of 9 Luminous Infrared Galaxies (LIRGs) and discuss the abundance gradients and distribution of metals in these systems. We have carried out optical integral field spectroscopy (IFS) of several several LIRGs in various merger phases to investigate the merger process. In a major merger of two spiral galaxies with preexisting disk abundance gradients, the changing distribution of metals can be used as a tracer of gas flows in the merging system as low metallicity gas is transported from the outskirts of each galaxy to their nuclei. We employ this fact to probe merger properties by using the emission lines in our IFS data to calculate the gas-phase metallicity in each system. We create abundance maps and subsequently derive a metallicity gradient from each map. We compare our measured gradients to merger stage as well as several possible tracers of merger progress and observed nuclear abundances. We discuss our work in the context of previous abundance gradient observations and compare our results to new galaxy merger models which trace metallicity gradient. Our results agree with the observed flattening of metallicity gradients as a merger progresses. We compare our results with new theoretical predictions that include chemical enrichment. Our data show remarkable agreement with these simulations.
description: Accepted for publication in ApJ. 26 pages, 18 figures
Characterization of radiowave propagation in indoor industrial environments
Creators: name: Stefanski, Adam
Publisher: name: University of British Columbia
Year: 2010

description: In recent years, the successful introduction of short-range wireless technology in both consumer and commercial markets has attracted considerable interest from designers of industrial plants and factories. Wireless technology can be used to achieve both flexibility and cost reduction when installed and utilized for industrial process control networks and factory automation systems. Effective application of wireless devices in industrial environments requires careful assessment of the potential uses for such devices, methods for characterizing the wireless channel, and accurate models for the impairments introducted by the wireless channel. Here, we show that: (1) Although conventional wireless technologies such as ZigBee and WiFi are currently used in many industrial applications, ultrawideband (UWB) wireless technologies offer unique capabilities that may lead to their playing key roles in future industrial applications. (2) Our computer-assisted technique for fitting the Saleh-Valenzuela model to measured UWB channel impulse responses (CIRs) offers a more rigorous and reproducable method for characterizing UWB channels than existing manual techniques can. (3) Although relatively little propagation data has been collected in indoor industrial environments to date, we combine these results to form a single rationalized UHF/UWB propagation model that is useful to designers and fills an important immediate need of designers while revealing gaps in our current understanding that need to be completed by future researchers.
title: Hindustan mein Open Distance Learning - Ek Tajziya
title: ہندوستان میں اوپن ڈسٹنس لرننگ - ایک تجزیہ
titleType: AlternativeTitle
Creators: name: Patel, Mushtaq Ahmed
Publisher: name: Zenodo
Year: 2022

description: Distance education has established itself as an integral component of the education system, yet its inherent complexity demands a thorough examination of the various factors that influence its evolution. This intricate interplay encompasses students, educators, educational institutions, government officials, and government policies, all of whom contribute to shaping the dynamics of this educational approach.
Against this backdrop, it is imperative to assess the performance of distance education institutions in recent years, particularly during the COVID-19 pandemic. This evaluation should focus on the participation of institutions and students across the nation, with a particular emphasis on the participation rates of students, especially girls, in rural and urban areas. Considering the pivotal role of regional centers in bridging the gap between students and educational opportunities, their distribution across urban and rural landscapes warrants careful examination. Moreover, the diverse nature of universities, with their varying specializations and pedagogical approaches, necessitates an in-depth understanding of the teaching styles employed within these institutions.
This article delves into these critical aspects, striving to illuminate the intricacies of distance education and uncover the factors that shape its trajectory.
description: فاصلاتی تعلیم تعلیمی نظام کا ایک جز ہے، لیکن پھر بھی بہت پیچیدہ اور وسیع علاقہ ہے اس میں شریک حصہ دار طلباء ، اساتذہ، تعلیمی ادارے، گورنمنٹ افسران، حکومتی پالیسیاں سبھی اس پر اثر انداز ہوتے ہیں جو خود بھی اس طرز تعلیم کی تبدیلیوں کے زیر اثر ہیں۔ اس لئے ضروری ہے کہ یہ دیکھا جائے کہ پچھلے چند سالوں میں (جن میں کووڈ-19 کا عرصہ بھی شامل ہے)، ان اداروں کا مظاہرہ کیسا رہا؟ اب ملک کے طول و عرض میں اداروں اور طلباء کی شرکت کیسی ہے؟ دیہی و شہری علاقوں میں طلباء اور بالخصوص لڑکیوں کا حصہ کیسا ہے؟ ریجنل سینٹرز طلباء تک پہنچنے کا اہم ذریعہ ہیں، وہ شہری و دیہی علاقوں میں قائم ہی۔ یونیورسٹیاں مختلف قسم کی اور مختلف مضامین سے منسلک ہیں ان میں کونسا طرزتعلیم استعمال ہو رہا ہے۔ انہی نکات کو سمجھنے کی کوشش اس آرٹیکل میں کی جا رہی ہے .
Shape oscillations of a charged diamagnetically-levitated droplet
Creators: name: Hill, R. J. A.
name: Eaves, L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We investigate the effect of electrical charge on the normal mode frequencies of electrically-charged diamagnetically levitated water droplets with radii 4.5-7.5 mm using diamagnetic levitation. This technique allows us to levitate almost spherical droplets and therefore to directly compare the measured vibrational frequencies of the first seven modes of the charged droplet with theoretical values calculated by Lord Rayleigh, for which we find good agreement.
Enhanced and switchable spin Hall effect of light near the Brewster angle on reflection
Creators: name: Luo, Hailu
name: Zhou, Xinxing
name: Shu, Weixing
name: Wen, Shuangchun
name: Fan, Dianyuan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We reveal an enhanced and switchable spin Hall effect (SHE) of light near Brewster angle on reflection both theoretically and experimentally. The obtained spin-dependent splitting reaches 3200nm near Brewster angle, 50 times larger than the previous reported values in refraction. We find that the amplifying factor in week measurement is not a constant which is significantly different from that in refraction. As an analogy of SHE in electronic system, a switchable spin accumulation in SHE of light is detected. We were able to switch the direction of the spin accumulations by slightly adjusting the incident angle.
description: 4 pages, 3 figures
Tetraquarks composed of 4 heavy quarks
Creators: name: Berezhnoy, A. V.
name: Luchinsky, A. V.
name: Novoselov, A. A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the current work spectroscopy and possibility of observation at the LHC of tetraquarks composed of 4 heavy quarks is discussed. Tetraquarks concerned are T_{4c}=[cc][cc]$, T_{4b}=[bb][bb] and T_{2[bc]}=[bc][bc]. By solving nonrelativistic Schroedinger equation masses of these states are found with the hyperfine splitting accounted for. It is shown that masses of tensor tetraquarks T_{4c}(2++) and T_{2[bc]}(2++) are high enough to observe these states as peaks in the invariant mass distributions of heavy quarkonia pairs in pp -> T_{4c}+X -> 2J/ψ+X, pp -> T_{2[bc]}+X -> 2B_{c}+X and pp -> T_{2[bc]}+X -> J/ψΥ(1S)+X channels while T_{4b} is under the threshold of decay into a vector bottomonia pair.
description: 8 pages, 3 figures, in the revised version several refences were added
Tetrel bond involving -CH3 group in HnXCH3 (X = F, Cl, and Br, n = 0; X = O, S, and Se, n = 1; X = N, P, and As, n = 2). Cooperativity with triel bond and beryllium bond
Creators: name: Wu, Qiaozhuo
name: An, Xiulin
name: Li, Qingzhong
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Hematology
subject: 60506 Virology
subject: FOS: Biological sciences
subject: Computational Biology

description: The tetrel bond formed between the σ-hole on the C atom of HnXCH3 (X = F, Cl, and Br, n = 0; X = O, S, and Se, n = 1; X = N, P, and As, n = 2) and the N atom of NCM (M = Li and Na) was studied by ab initio calculations at the MP2/aug-cc-pVTZ level. The molecules involving nitrogen or oxygen group substituents engage in a weaker tetrel bond with interaction energies in the range of 5–12 kJ/mol. In contrast, a stronger tetrel bond is formed when the X atom of HnXCH3 is a halogen, with interaction energies in the range of 16–18 kJ/mol. The tetrel bond is further enhanced by the addition of the electron-deficient molecule BeH2 or BH3 to the X atom of HnXCH3 and the interaction energy can be increased to 38 kJ/mol. Moreover, the enhancing effect of beryllium bond on the tetrel bond is greater than that from the triel bond.
Consulting the Community on Advancing an LGBTQ Alberta Framework on the Prevention of Domestic Violence
Creators: name: Hansen, Brian
name: Wells, Lana
Publisher: name: Social Work
Year: 2015

description: This report contains the findings from a series of six consultations that Shift conducted throughout Alberta to better understand risk factors related to domestic violence victimization and perpetration within lesbian, gay, bisexual, transgender and queer (LGBTQ) communities, as well as barriers to help-seeking. A total of 81 individuals from across Alberta were involved in the consultations, including representatives from the LGBTQ communities, the domestic violence sector, health services, school systems and law enforcement. Participants agreed that there is a need for improved capacity among government and community-based organizations to provide better services to LGBTQ victims and perpetrators of domestic violence. In particular, many participants noted that a lack of appropriate and informed services presents a significant barrier to LGBTQ individuals who are trying to exit unhealthy relationships and/or violent circumstances. Domestic violence service providers themselves acknowledged the limitations of their knowledge about the unique experiences of LGBTQ individuals; however, these providers also demonstrated a genuine desire to learn about, and improve, the provision of care to prevent domestic violence within the LGBTQ community. Specific recommendations directed at the Government of Alberta and community-based agencies are included.
On the sensitivity of transverse flow to the isospin-dependent cross-section and symmetry energy
Creators: name: Gautam, Sakshi
name: Puri, Rajeev K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the transverse flow for systems having various N/Z ratios. We find the transverse flow is sensitive to N/Z ratio and, in fact, increases with N/Z of the system. The relative contribution of symmetry energy and isospin dependence of nucleon-nucleon cross section is also investigated. We find the greater sensitivity of symmetry energy in the lighter systems compared to heavier ones.
Gaps in Open Science Support in Europe: Disciplinary Perspectives Summary Cards
Creators: name: Knazook, Beth
name: Heikkurinen, Matti
Publisher: name: Zenodo
Year: 2023
Subjects: Open Science
EOSC

description: These short summary cards highlight key takeaways from the report Gaps in Open Science Support in Europe: Disciplinary Perspectives prepared for the EOSC Future project as part of task 10.2.1 "Widening EOSC awareness and engagement in underrepresented communities." This task aims to help EOSC become more receptive and responsive to the needs and realities of various domain-specific research communities as users of EOSC by providing insight into the challenges and needs of researchers in disciplines which are not as well-supported or engaged in the pursuit of Open Science.
The conclusions presented here emerged from a series of interviews, surveys, focus groups, and conference events over the course of the project conducted with representatives from the Research Data Alliance (RDA), a volunteer-led community 'building the social and technical bridges to enable open sharing and reuse of data.' Representatives spoke on behalf of various disciplinary communities that were perceived to be underrepresented in EOSC, as well as those that were felt to be better supported, because raising awareness about common challenges allows us to leverage successful solutions where they already exist.
Internal corrosion of CO2 transport pipelines for CCS purposes
Creators: name: Sim, Samson Yeat Son
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: The research reported in this thesis focuses on the fundamental understanding of carbon steel corrosion as relevant to the internal corrosion of pipelines intended for Carbon Capture and Storage (CCS) applications. The CCS process appears to be imminent in AustraliaI, as evidenced by current initiatives such as Carbonet, and supercritical CO2 pipelines represent the anticipated mode of CO2 transport from the capture to storage sitesII. A thorough literature review was conducted, which includes studies of the corrosion mechanism related to supercritical CO2 during transport, and the recent contributions from a dynamic field that is continuing to evolve throughout the course of this project. An empirical approach was used in this project to determine the effect of various input variables, including salt and acid impurities, temperature and pressure, on the subsequent corrosion rates of steel in the likely CCS relevant stream chemistry. A high throughput methodology was developed to screen a range of electrolyte chemistries in atmospheric (aqueous) conditions, and supplemented by tests in supercritical CO2. For this, a high pressure autoclave was also used to simulate the high pressure (>7.5MPa) during supercritical CO2 transport. This enabled an empirical model to be developed, in order to predict the expected corrosion rate as a function of electrolyte chemistry – serving as a platform for benchmarking CCS pipeline durability. The techniques in this study include potentiodynamic polarisation tests, weight loss tests, scanning electron microscopy, and optical profilometry. Generally, corrosion rates obtained from the presence of acid impurities and in the presence of an aqueous phase, were high. Corrosion attack was typically localised, with potential for severe attack in cases where co-speciation of acids with carbonic acid could occur. Experiments with increasing water concentration and pressure showed increased corrosion rates attributed to the increased solubility of CO2 in water and the behaviour of the corrosion product (iron carbonate). A correlation was also observed between experiments conducted in aqueous conditions compared to supercritical CO2, which gives merit to experimentation using high throughput methods. __________________________ Ihttp://www.co2crc.com.au/research/ausprojects.html IIJ. Mack, B. Endemann, "Making carbon dioxide sequestration feasible: Toward federal regulation of CO2 sequestration pipelines", Energy Policy, 38 2 (2010): p. 735-743
Novel cubic silicane nanosheet as an adsorbing medium for dimethylbutane and methylhexane molecules – a first-principles study
Creators: name: Jyothi, M. S.
name: Nagarajan, V.
name: Chandiramouli, R.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Computational Biology

description: The geometric stability and electronic properties of cubic silicane (c-Si12) nanosheet (hydrogenated silicene) are studied based on the first-principles studies. The c-Si12 monolayer nanosheet possesses an energy band gap of 2.259 eV. We deployed the semiconductor c-Si12 nanosheet as a sensing base material for 2,2-dimethylbutane, 2-methylhexane molecules. Moreover, the adsorption energy results disclose the physical adsorption of target molecules on c-Si12 nanosheet. Furthermore, the variation in the electronic properties of c-Si12 nanosheet is evident from the outcome of charge transfer, electron difference density, band structure, and density of states studies. Besides, the relative energy gap variation of c-Si12 nanosheet is taken into count, which reveals the chemo-resistive nature of c-Si12 nanosheet owing to 2,2-dimethylbutane, 2-methylhexane adsorption. Hence, the novel c-Si12 nanosheet can be employed as a sensing substrate for 2,2-dimethylbutane, 2-methylhexane molecules.
State of the Science Brief: Programmatic Approaches to Sexual Violence Prevention and Risk Reduction in Post-Secondary Settings
Creators: name: Exner-Cortens, Deinera
name: Wells, Lana
Publisher: name: Social Work
Year: 2017

description: The authors of this paper and Shift: The Project to End Domestic Violence believe that sexual assault is NEVER the victim’s fault. Further, we wish to emphasize that research on risk reduction should not be taken to imply that victims are responsible for protecting themselves from assault. For too long, survivors have been blamed by individuals and systems for sexual assault, and thus we must whole-heartedly resist any discourse that blames and shames victims. However, we have found through the research that effective rape resistance programs within a specific context may impact the experience of sexual violence, and so we chose to present that research here. To that end, readers should only consider the presented research and findings within the context of the post-secondary environment, as this is the setting where all reported research was conducted: the post-secondary environment is a unique setting and we thus discourage the generalization of findings to other settings and age groups. It is our hope that this report leads to a robust discussion of these findings, and what they mean for sexual violence prevention in Alberta.
Quasi-one-dimensional flow of polariton condensate past an obstacle
Creators: name: Kamchatnov, Anatoly M.
name: Kartashov, Yaroslav V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Nonlinear wave patterns generated by the flow of polariton condensate past an obstacle are studied for quasi-one-dimensional microcavity geometry. It is shown that pumping and nonlinear damping play a crucial role in this process leading to sharp differences in subsonic and supersonic regimes. Subsonic flows result in a smooth disturbance of the equilibrium condensate around the obstacle whereas supersonic flow generates a dispersive shock wave in the flow upstream the obstacle and a long smooth downstream tail. Main characteristics of the wave pattern are calculated analytically and analytical results are in excellent agreement with the results of numerical simulations. The conditions for existence of stationary wave patterns are determined numerically.
description: to be published in Europhysics Letters
Magnetic catalysis in hot and dense quark matter and quantum fluctuations
Creators: name: Fukushima, Kenji
name: Pawlowski, Jan M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyze chiral symmetry breaking in quark matter in an external magnetic field at zero and finite temperature and quark chemical potential. We first give a brief overview of analytic results within the mean-field approximation. There the critical temperature for chiral restoration is increased by the magnetic field effect. Then we investigate the effects of matter and quantum fluctuations on the Magnetic Catalysis. More specifically, we compute the critical coupling as a function of the magnetic field and the temperature for zero and finite quark chemical potential in the presence of quantum fluctuations. As soon as a non-zero temperature and/or density is turned on, long-range correlations are screened and the critical coupling is no longer vanishing. We extend our dynamical results beyond the leading-order bubble resummation which results in a non-local four-Fermi coupling. This includes in-medium meson effects on the more quantitative level.
description: 14 pages, 4 figures