cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Transitioning from online teaching to blended teaching in the post-pandemic era: What has COVID-19 taught us?
Creators: name: Sia, Joseph Kee-Ming
name: Chin, Wei Lee
name: Voon, Mung Ling
name: Adamu, Adamu Abbas
name: Tan, Sylvester Chun Kiat
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Information Systems not elsewhere classified
subject: Science Policy

description: Although educators in higher education institutions have embraced online teaching, little research has been conducted on their experience transitioning from online to blended classes. This study aimed to conduct a comparative analysis and present feedback from educators in higher education institutions (HEIs) in Brunei and Malaysia who migrated from online to blended teaching. Fifteen educators at HEIs in Brunei and Malaysia undertook in-depth semi-structured interviews that produced four themes: 1) openness to change from traditional teaching methods, 2) institutional assistance for academic resilience, 3) network broadening, and 4) the emergence of the digital divide. The findings assist higher education ministries and HEIs in strategically implementing blended learning in the endemic phase. The proposed recommendations provide insights for authorities to revisit existing education policy frameworks by designing new strategies for adopting technology and adjusting pedagogical approaches in their educational practices. Ultimately, this study contributes to the literature on educators’ readiness and resilience in transitioning from online to blended teaching during the post-pandemic period, particularly in Asian countries.
Difference between penetration and damping lengths in photonic crystal mirrors
Creators: name: Sauvan, C.
name: Hugonin, J. P.
name: Lalanne, P.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Different mirror geometries in two-dimensional photonic crystal slabs are studied with fully-vectorial calculations. We compare their optical properties and, in particular, we show that, for heterostructure mirrors, the penetration length associated with the delay induced by distributed reflection is not correlated to the characteristic damping length of the electromagnetic energy distribution in the mirror. This unexpected result evidences that the usual trade-off between short damping lengths and large penetration lengths that is classically encountered in distributed Bragg reflectors can be overcome with carefully designed photonic crystal structures.
description: to be published in Applied Physics Letters, 4 pages, 4 figures
Neoliberalism, privatisation and marketisation: The implications for legal education in England and Wales
Creators: name: Balan, Anil
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy
subject: Plant Biology
subject: FOS: Biological sciences

description: This study discusses the impact of neoliberalism on legal education in England and Wales and the challenges and opportunities it presents. Neoliberalism is characterised by a focus on economic efficiency, competition, and individual responsibility, which can result in the commodification of education. The adoption of neoliberal policies in legal education has led to an increase in the number of law students and institutions offering legal education, with private providers playing a more prominent role. However, in light of recent developments in legal education and training, there are concerns about the equity and fairness of access to education, the quality of education provided, and the accountability of private providers. This study suggests several ways to address these challenges, such as promoting student-centred learning, incorporating vulnerability theory, and fostering student-staff partnerships and recommends a fundamental readjustment of legal education in order to equip graduates with the necessary skills and knowledge.
Timor-Leste: Challenges to the Consolidation of Democracy
Creators: name: Feijó, Rui Graça
Publisher: name: Canberra, ACT : Coral Bell School of Asia Pacific Affairs, College of Asia and the Pacific, The Australian National University
Year: 2014

description: The majority of authors writing on Timor-Leste, and international organisations who publish indices of democratic performance concur that Timor-Leste has achieved the status of a democratic polity, although the apparent stability of the regime cannot be equated with full democratic consolidation. Among the myriad challenges that this nation faces, democratic consolidation ranks high. In this In Brief, the author considers three particular dimensions to the challenge of democratic consolidation in Timor-Leste.
Matrix Model Conjecture for Exact BS Periods and Nekrasov Functions
Creators: name: Mironov, A.
name: Morozov, A.
name: Shakirov, Sh.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We give a concise summary of the impressive recent development unifying a number of different fundamental subjects. The quiver Nekrasov functions (generalized hypergeometric series) form a full basis for all conformal blocks of the Virasoro algebra and are sufficient to provide the same for some (special) conformal blocks of W-algebras. They can be described in terms of Seiberg-Witten theory, with the SW differential given by the 1-point resolvent in the DV phase of the quiver (discrete or conformal) matrix model (β-ensemble), dS = ydz + O(ε^2) = \sum_p ε^{2p} ρ_β^{(p|1)}(z), where εand βare related to the LNS parameters ε_1 and ε_2. This provides explicit formulas for conformal blocks in terms of analytically continued contour integrals and resolves the old puzzle of the free-field description of generic conformal blocks through the Dotsenko-Fateev integrals. Most important, this completes the GKMMM description of SW theory in terms of integrability theory with the help of exact BS integrals, and provides an extended manifestation of the basic principle which states that the effective actions are the tau-functions of integrable hierarchies.
description: 14 pages
Content analysis of Biology textbooks across selected educational boards of Asia for misconceptions and elements of conceptual change towards learning ‘Cell Structure’
Creators: name: Parthasarathy, J.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Computational Biology

description: In the present study, text presentation in biology textbooks was analyzed with respect to misconception and elements of conceptual change towards the learning of “Cell Structure”. Content analysis of the lesson “Cell Structure” in five biology textbooks of Grades 11 and 12 across selected educational boards in Asia like the International Baccalaureate Diploma Program (IBDP), Cambridge Advanced Subsidiary and Advanced Level (AS-A Level), Advanced Placements Board (AP Board), Central Board of Secondary Education (CBSE) and Tamil Nadu Board of Higher Secondary Education (TNBHSE) was carried out to identify the differences in text-presentation with respect to misconceptions and elements of conceptual change towards the learning of “Cell Structure”. Analysis for elements of conceptual change was carried out by applying “Posner’s Model of Conceptual Change” needed for the replacement of these misconceptions. The results of the analysis indicate that all four elements needed for conceptual change learning were found only in biology textbooks of international boards. The study further reports that the text presentation in these biology textbooks is non-expository with refutational characteristics fostering conceptual understanding by “reasoning and inquiry”. In contrast, text presentation in biology textbooks of Indian educational boards is expository, fostering conceptual understanding by “memorization”.
Single-atom catalytic growth of crystals using graphene as a case study
Text
Creators: name: Yang, Xiaoqin
name: Liu, Yu
name: Ta, Huy Q.
name: Rezvani, Ehsan
name: Zhang, Yue
name: Zeng, Mengqi
name: Fu, Lei
name: Bachmatiuk, Alicja
name: Luo, Jinping
name: Liu, Lijun
name: Rümmeli, Mark H.
Publisher: name: London : Nature Publishing Group
Year: 2021
Subjects: subject: Graphene
subject: Two-dimensional materials
subject: 660
subject: 670

description: Anchored Single-atom catalysts have emerged as a cutting-edge research field holding tremendous appeal for applications in the fields of chemicals, energy and the environment. However, single-atom-catalysts for crystal growth is a nascent field. Of the few studies available, all of them are based on state-of-the-art in situ microscopy investigations and computational studies, and they all look at the growth of monolayer graphene from a single-atom catalyst. Despite the limited number of studies, they do, collectively, represent a new sub-field of single-atom catalysis, namely single-atom catalytic growth of crystalline solids. In this review, we examine them on substrate-supported and as freestanding graphene fabrication, as well as rolled-up graphene, viz., single-walled carbon nanotubes (SWCNT), grown from a single atom. We also briefly discuss the catalytic etching of graphene and SWCNT’s and conclude by outlining the future directions we envision this nascent field to take.
Geology and genesis of the Kellan gold Deposit, East Kalimantan, Indonesia
Creators: name: Davies, AGS
Publisher: name: University Of Tasmania
Year: 2023

description: Kelian is a bulk tonnage, breeCla-and vein-hosted, structurally controlled, base metal sulfide-rich low sulfidation epithermal gold-silver deposit. The Kelian mi.ne is located in East Kalimantan, Indonesia on the island of Borneo. Containing -240 metric tonnes of gold, Kdian is a 'giant' gold deposit and Indonesia's largest gold-only resource. The deposit occurs principally witilln a stru
Oxidation of iron by lead oxide - Silica melts
Creators: name: Portier, Bernard
Publisher: name: University of British Columbia
Year: 2011

description: An investigation of the oxidation of solid iron by lead oxide-silica melts was undertaken between 850°C and 1000°C over a wide range of oxidising potentials. The experimental reaction rates were measured by a technique of electrical resistance measurements. In the intermediate range of concentration investigated (80-88 % wgt.PbO) the rate of oxidation was found to be proportional to the mole fraction of lead oxide in the melt, in other words, to the lead ion concentration. The rate determining step of iron oxidation by lead oxide-silica melts is supposed to involve lead cations in contrast with the oxidation of carbon where oxygen ions are involved. The apparent activation energy was found to be 50 ± 7 Kcal/mole. Two sets of activity data concerning the lead oxide in PbO-SiO₂ melts were available and were compared by processing the present results on iron oxidation and previous results on carbon oxidation by similar melts.
On graph theoretic results underlying the analysis of consensus in multi-agent systems
Creators: name: Chebotarev, Pavel
Publisher: name: arXiv
Year: 2009
Subjects: subject: Multiagent Systems (cs.MA)
subject: Discrete Mathematics (cs.DM)
subject: Combinatorics (math.CO)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: This note corrects a pretty serious mistake and some inaccuracies in "Consensus and cooperation in networked multi-agent systems" by R. Olfati-Saber, J.A. Fax, and R.M. Murray, published in Vol. 95 of the Proceedings of the IEEE (2007, No. 1, P. 215-233). It also mentions several stronger results applicable to the class of problems under consideration and addresses the issue of priority whose interpretation in the above-mentioned paper is not exact.
description: 3 pages, 13 references. Submitted
Infrared and NMR Spectroscopic Fingerprints of the Asymmetric H7 + O3 Complex in Solution
Creators: name: Kozari, Eve
name: Sigalov, Mark
name: Pines, Dina
name: Fingerhut, Benjamin P.
name: Pines, Ehud
Publisher: name: Weinheim : Wiley-VCH Verl.
Year: 2021
Subjects: subject: CN stretch
subject: hydrated proton
subject: molecular dynamics simulations
subject: trimer
subject: Zundel cation
subject: 540

description: Infrared (IR) absorption in the 1000-3700 cm-1 range and 1 H NMR spectroscopy reveal the existence of an asymmetric protonated water trimer, H7 + O3, in acetonitrile. The core H7 + O3 motif persists in larger protonated water clusters in acetonitrile up to at least 8 water molecules. Quantum mechanics/molecular mechanics (QM/MM) molecular dynamics (MD) simulations reveal irreversible proton transport promoted by propagating the asymmetric H7 + O3 structure in solution. The QM/MM calculations allow for the successful simulation of the measured IR absorption spectra of H7 + O3 in the OH stretch region, which reaffirms the assignment of the H7 + O3 spectra to a hybrid-complex structure: a protonated water dimer strongly hydrogen-bonded to a third water molecule with the proton exchanging between the two possible shared-proton Zundel-like centers. The H7 + O3 structure lends itself to promoting irreversible proton transport in presence of even one additional water molecule. We demonstrate how continuously evolving H7 + O3 structures may support proton transport within larger water solvates.
Facilitating students’ return to school following a concussion: Perspectives of Canadian teachers and school administrators
Creators: name: Shepherd, Heather A.
name: Shill, Isla J.
name: Caron, Jeffrey G.
name: Reed, Nick
name: Yeates, Keith Owen
name: Schneider, Kathryn J.
name: Black, Amanda M.
name: Emery, Carolyn A.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: An estimated 20 percent of adolescents in North America have sustained a concussion. Teachers and school administrators are responsible for supporting following concussion to return to school. The purpose of this study was to describe the perspectives of Canadian teachers and school administrators with supporting returning to school post-concussion. This qualitative study was guided by an interpretivist philosophy. Semi-structured interviews with grades 7–12 teachers (n = 13) and school administrators (n = 5) were coded inductively and analysed using reflexive thematic analysis. We organized the data into five themes: 1) Educator roles differ for administrators and teachers; 2) Students’ symptoms affect their learning; 3) Students should have access to academic accommodations; 4) Students benefit from social support, compassion, and empathy; and 5) Concussion education and management processes are lagging. In Canada, teachers and administrators have different roles when supporting students returning to school after a concussion and those roles influence their engagement with the students and their awareness of students’ needs. Lack of concussion education and concussion management processes at schools may affect how students are supported following a concussion. Our findings can inform the development and implementation of supports to facilitate return to school for students following a concussion.
Dynamics of Pistachio Prices Adjustment in Global Market and Export Market of Iran
Creators: name: Nabieyan, Sedigheh
name: Safaei, Shiva Safaei
name: Mehrabi, Hosein
name: Nabieyan, Sedigheh
name: Safaei, Shiva Safaei
name: Mehrabi, Hosein
Publisher: name: Unknown
Year: 2021
Subjects: International Relations/Trade
Demand and Price Analysis

description: Paper# 17997
The Effects of Asymmetric Regulatory Measures on North-South Trade: A Case of South African Beef Exports to the European Union
Creators: name: Banda, Chikumbutso
name: Kalaba, Mmatlou
name: Banda, Chikumbutso
name: Kalaba, Mmatlou
Publisher: name: Unknown
Year: 2021
Subjects: International Relations/Trade
Agricultural and Food Policy

description: Paper# 18026
Hexagonal Warping Effects in the Surface States of Topological Insulator Bi$_2$Te$_3$
Creators: name: Fu, Liang
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A single two-dimensinoal Dirac fermion state has been recently observed on the surface of topological insulator Bi$_2$Te$_3$ by angle-resolved photoemission spectroscopy (ARPES). We study the surface band structure using $k \cdot p$ theory and find an unconventional hexagonal warping term, which is the counterpart of cubic Dresselhaus spin-orbit coupling in rhombohedral structures. We show that this hexagonal warping term naturally explains the observed hexagonal snow-flake Fermi surface. The strength of hexagonal warping is characterized by a single parameter, which is extracted from the size of the Fermi surface. We predict a number of testable signatures of hexagonal warping in spectroscopy experiments on Bi$_2$Te$_3$. We also explore the possibility of a spin-density wave due to strong nesting of the Fermi surface.
description: 4 pages, 3 figures, published version
Evaluating process-based integrated assessment models of climate change mitigation
Creators: name: Wilson, Charlie
name: Guivarch, Céline
name: Kriegler, Elmar
name: Van Ruijven, Bas
name: Van Vuuren, Detlef P.
name: Krey, Volker
name: Schwanitz, Valeria Jana
name: Thompson, Erica L.
Publisher: name: Dordrecht [u.a.] : Springer Science + Business Media B.V
Year: 2021
Subjects: subject: Climate mitigation
subject: Evaluation
subject: IAM
subject: Process-based integrated assessment model
subject: 550

description: Process-based integrated assessment models (IAMs) project long-term transformation pathways in energy and land-use systems under what-if assumptions. IAM evaluation is necessary to improve the models’ usefulness as scientific tools applicable in the complex and contested domain of climate change mitigation. We contribute the first comprehensive synthesis of process-based IAM evaluation research, drawing on a wide range of examples across six different evaluation methods including historical simulations, stylised facts, and model diagnostics. For each evaluation method, we identify progress and milestones to date, and draw out lessons learnt as well as challenges remaining. We find that each evaluation method has distinctive strengths, as well as constraints on its application. We use these insights to propose a systematic evaluation framework combining multiple methods to establish the appropriateness, interpretability, credibility, and relevance of process-based IAMs as useful scientific tools for informing climate policy. We also set out a programme of evaluation research to be mainstreamed both within and outside the IAM community.
Birational geometry for nilpotent orbits
Creators: name: Namikawa, Yoshinori
Publisher: name: arXiv
Year: 2010
Subjects: subject: Algebraic Geometry (math.AG)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: This is a survey article prepared for the submission to "Handbook of moduli". The following topics are discussed: (i) Basic facts and examples of resolutions for nilpotent orbit (ii) Q-factorial terminalizations of nilpotent orbit closures and related birational geometry (iii) Poisson deformations of nilpotent orbit closures.
description: 44 pages, preliminary version 2 (A few typos are corrected.)
The Union Reefs prospect, N.T.: Structure and geochemistry of a turbidite hosted gold deposit
Creators: name: Donaldson, J
Publisher: name: University Of Tasmania
Year: 2023

description: The Union Reefs gold prospect is located approximately 15.5 km north-west of Pine Creek, in the Northern Territory. It is hosted within the Burrell Creek Formation, a Palaeoproterozoic turbidite sequence of the Pine Creek Geosyncline. Two deformations have been recognised at the prospect. The first deformation produced tight folds and a continuous slaty cleavage. The second deformation produced long wavelength folds, mesoscopic folds, a discontinuous spaced and crenulation cleavage, and conjugate kinks. A domal structure was produced from fold interference. The mineralisation event occurred during the second deformation. It is associated with breccia zones and quartz sulphide veins, and crosscuts buck quartz veins and sheeted quartz veins. Mineralisation consists of pyrrhotite, arsenopyrite, marcasite, pyrite, chalcopyrite, sphalerite, galena, gold, bismuth, bismuthinite and an unidentified phase. Based on data derived from field observations, petrographic studies and sulphur isotope analyses, a genetic model for gold mineralisation at the prospect is proposed. The genetic model suggests that sulphur was derived from a mixed igneous and sedimentary source. Gold was sourced from the sedimentary pile by fluids convecting under elevated temperature in response to emplacement of the Allamber Springs Granite. The convecting fluids were focussed into dilatant structures within uplifted, fault bounded blocks and corridors. Deposition of gold is thought to be a result of a decrease in the oxygen fugacity of the gold bearing fluid.
Early childhood student teachers engaging in a scenario-based professional program: The case of early mathematics
Creators: name: Alsaeed, Maha Saad
name: Mohammad, Aida Deeb Abdallah
Publisher: name: Taylor & Francis
Year: 2023
Subjects: Medicine
Developmental Biology
Science Policy
Mental Health

description: This study explored how a scenario-based (SB), one-semester professional development program influenced the instructional practices of preservice early childhood mathematics teachers. The participants completed a 15-week program in which they engaged with modeled in-class teaching experience and subsequently answered a number of questions that prompted them to consider possible ways of reacting in similar, everyday interactions with children. The findings indicate that the SB activities enhanced the teachers’ perceived instructional practices and their motivation to use student-centered instruction when teaching early mathematical concepts to children. By contrast, results indicate that the preservice teachers developed lower scores on the teacher-centered practices construct after their engagement in the SB professional program. This research inspired the recommendation that early childhood teachers should find balance in focusing on direct math content with supporting children’s self-efficacy and emotional development through child-centered instruction.
Productivity Differences in Small Scale Palm Oil Processors Using Different Processing Technologies in Ghana
Creators: name: Osei-Mensah, Isaac
name: Asante, Bright Owusu
name: Owusu, Victor
name: Donkor, Emmanuel
name: Boansi, David
name: Osei-Mensah, Isaac
name: Asante, Bright Owusu
name: Owusu, Victor
name: Donkor, Emmanuel
name: Boansi, David
Publisher: name: Unknown
Year: 2021
Subjects: Production Economics

description: Paper# 18096
Phases and collective modes of hardcore Bose-Fermi mixture in an optical lattice
Creators: name: Sinha, S.
name: Sengupta, K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We obtain the phase diagram of a Bose-Fermi mixture of hardcore spinless Bosons and spin-polarized Fermions with nearest neighbor intra-species interaction and on-site inter-species repulsion in an optical lattice at half-filling using a slave-boson mean-field theory. We show that such a system can have four possible phases which are a) supersolid Bosons coexisting with Fermions in the Mott state, b) Mott state of Bosons coexisting with Fermions in a metallic or charge-density wave state, c) a metallic Fermionic state coexisting with superfluid phase of Bosons, and d) Mott insulating state of Fermions and Bosons. We chart out the phase diagram of the system and provide analytical expressions for the phase boundaries within mean-field theory. We demonstrate that the transition between these phases are generically first order with the exception of that between the supersolid and the Mott states which is a continuous quantum phase transition. We also obtain the low-energy collective excitations of the system in these phases. Finally, we study the particle-hole excitations in the Mott insulating phase and use it to determine the dynamical critical exponent $z$ for the supersolid-Mott insulator transition. We discuss experiments which can test our theory.
description: 10 pages 6 Figs v2: Updated version with more refs and additional discussions
Stock Market and Motion of a Variable Mass Spring
Creators: name: Canessa, Enrique
Publisher: name: arXiv
Year: 2009
Subjects: subject: Statistical Finance (q-fin.ST)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: We establish an analogy between the motion of spring whose mass increases linearly with time and volatile stock markets dynamics within an economic model based on simple temporal demand and supply functions [J. Phys. A: Math. Gen. 33, 3637 (2000)]. The total system energy E_t is shown to be proportional to a decreasing time dependent spring constant k_t. This model allows to derive log-periodicity cos[log (t-t_{c})] on commodity prices and oscillations (surplus and shortages) in the level of stocks. We also made an attempt to connect these results to the Tsallis statistics parameter q based on a possible force-entropy correlation [Physica A 341, 165 (2004)] and find that the Tsallis second entropic term \sum_{i=1}^{W} p_i^{q}/(q-1) relates to the square of the demand (or supply) function.
Desynchronization Transitions in Adaptive Networks
Creators: name: Berner, Rico
name: Vock, Simon
name: Schöll, Eckehard
name: Yanchuk, Serhiy
Publisher: name: Technische Universität Berlin
Year: 2021
Subjects: subject: 530 Physik
subject: nonlinear dynamics
subject: network
subject: self-organization
subject: oscillator
subject: synchronization

description: Adaptive networks change their connectivity with time, depending on their dynamical state. While synchronization in structurally static networks has been studied extensively, this problem is much more challenging for adaptive networks. In this Letter, we develop the master stability approach for a large class of adaptive networks. This approach allows for reducing the synchronization problem for adaptive networks to a low-dimensional system, by decoupling topological and dynamical properties. We show how the interplay between adaptivity and network structure gives rise to the formation of stability islands. Moreover, we report a desynchronization transition and the emergence of complex partial synchronization patterns induced by an increasing overall coupling strength. We illustrate our findings using adaptive networks of coupled phase oscillators and FitzHugh-Nagumo neurons with synaptic plasticity.
Evaluating the Regional Impacts of Climate Change on Women's Well-Being, Domestic Burdens and Food Security in Bolivia
Creators: name: Escalante, Luis Enrique
name: Maisonnave, Helene
name: Escalante, Luis Enrique
name: Maisonnave, Helene
Publisher: name: Unknown
Year: 2021
Subjects: Consumer/Household Economics
Environmental Economics and Policy

description: Paper# 18103
Towards a conceptual framework for cognitive probing
Creators: name: Krol, Laurens R.
name: Zander, Thorsten O.
Publisher: name: Technische Universität Berlin
Year: 2018
Subjects: subject: 150 Psychologie
subject: cognitive probing
subject: brain-computer interface
subject: neuroadaptive technology
subject: implicit interaction
subject: human-computer interaction

description: Cognitive probing combines the ability of computers to interpret ongoing measures of arbitrary brain activity, with the ability of those same computers to actively elicit cognitive responses from their users. Purposefully elicited responses can be interpreted in order to learn about the user, enable symbiotic and implicit interaction, and support neuroadaptive technology. We propose a working definition of cognitive probing that allows it to be generalised across different applications and disciplines.
Undergraduate students’ preference between online test and paper-based test in Sub-Saharan Africa
Creators: name: Yeboah, Douglas
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Neuroscience
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Mental Health
subject: Plant Biology
subject: FOS: Biological sciences

description: Computer-based test has been administered in e-learning environments as part of ICT integration in education. Recently, online test is gaining attention in both regular and distance education institutions, and students’ preference or perception of an online test versus paper-based test is crucial in successful adoption or implementation of either of the test modes by any educational institution. For this reason, this study examined undergraduate students’ computer usage experience as a prerequisite for online test completion, and their perception and preference toward online test as opposed to paper-based test. It also examined how students’ perception of online test differed across sex, program major, and computer usage experiences. The findings would contribute to knowledge on factors for consideration, especially by faculty and instructional designers, in successful adoption of online test in undergraduate programmes. An online questionnaire was used to collect data from 213 undergraduate students at a university in Ghana, and the data were analyzed using median, standard deviation, Mann-Whitney U Test, Kruskal–Wallis Test, and Spearman correlation. The results indicated that students had high level of experience in computer usage, they had positive perception and preference for online test, there was no significant differences in perception of online test between female and male students, and among students of different majors. However, there was a positive correlation between computer use experience of the students and their perception of online test. It was recommended that universities seeking to implement online assessment ensure their students are equipped with adequate skills and experiences in computer usage.
Electrochemical growth mechanism of nanoporous platinum layers
Creators: name: Stanca, Sarmiza-Elena
name: Vogt, Oliver
name: Zieger, Gabriel
name: Ihring, Andreas
name: Dellith, Jan
name: Undisz, Andreas
name: Rettenmayr, Markus
name: Schmidt, Heidemarie
Publisher: name: [London] : Macmillan Publishers Limited, part of Springer Nature
Year: 2021
Subjects: subject: porous platinum
subject: electrosynthesis
subject: broadband absorber
subject: 540

description: Porous platinum is a frequently used catalyst material in electrosynthesis and a robust broadband absorber in thermoelectrics. Pore size distribution and localization determine its properties by a large extent. However, the pore formation mechanism during the growth of the material remains unclear. In this work we elucidate the mechanism underlying electrochemical growth of nanoporous platinum layers and its control by ionic concentration and current density during electrolysis. The electrode kinetics and reduction steps of PtCl4 on platinum electrodes are investigated by cyclic voltammetry and impedance measurements. Cyclic voltammograms show three reduction steps: two steps relate to the platinum cation reduction, and one step relates to the hydrogen reduction. Hydrogen is not involved in the reduction of PtCl4, however it enables the formation of nanopores in the layers. These findings contribute to the understanding of electrochemical growth of nanoporous platinum layers in isopropanol with thickness of 100 nm to 500 nm.
Quantifying the Determinants of Climate Change Adaptation Strategies and Farmers’ Access to Credit in South Africa
Creators: name: Ojo, Temitope
name: Adetoro, Adetoso A. Adetoro
name: Ogundeji, Abiodun A.
name: Belle, Johannes A.
name: Ojo, Temitope
name: Adetoro, Adetoso A. Adetoro
name: Ogundeji, Abiodun A.
name: Belle, Johannes A.
Publisher: name: Unknown
Year: 2021
Subjects: Agricultural Finance
Environmental Economics and Policy

description: Paper# 18138
A Three-Stage Approach of Understanding Climate Change Perception and Adaptation Strategies Among Smallholder Farmers in South Africa
Creators: name: Ojo, Temitope
name: Ogundeji, Abiodun A.
name: Belle, Johannes A.
name: Demont, Matty
name: Ojo, Temitope
name: Ogundeji, Abiodun A.
name: Belle, Johannes A.
name: Demont, Matty
Publisher: name: Unknown
Year: 2021
Subjects: Farm Management
Environmental Economics and Policy

description: Paper# 18139
Grafting fluorescent nanodiamonds onto optical tips
Creators: name: Cuche, A.
name: Drezet, A.
name: Roch, J. -F.
name: Treussart, F.
name: Huant, S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We recently (Optics Express 17, 19969 (2009)) introduced an all-optical method for grafting onto the apex of an optical tip a single 20 nm nanodiamond with single color-center occupancy and used the resulting single-photon tip in scanning near-field imaging at room temperature, thereby achieving a genuine scanning single-photon microscopy working in ambient conditions. A variant of this method is described that allows for attaching several nanodiamonds onto the tip apex, releasing them all at once and finally recapturing them one by one by the scanning tip. This underlines the flexibility and powerfulness of our method and its variant that could be used in applications where a fixed number of selected optically active nano-objects requires positioning, or repositioning, at well defined locations with nanometer accuracy.
description: Minor stylistic changes since first submission
New furofuran and tetrahydrofuran lignans from the flower buds of Magnolia biondii Pamp and their antiallergic effects
Creators: name: Zhang, Xing
name: Wu, Xi-Min
name: Han, Lin-Hang
name: Qian, Fei
name: Zhang, Liu-Qiang
name: Li, Yi-Ming
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Cell Biology
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Plant Biology
subject: Virology

description: The dried flower buds of Magnolia biondii Pamp (herbal name, Xin-Yi) are a traditional Chinese medicine with a long history of clinical use in the treatment of allergic rhinitis and sinusitis. However, the constituents responsible for its antiallergic effects remain clearly unidentified. In the present study, totally 33 lignans were obtained from M. biondii. Among them, two novel furofuran lignans (1 and 2), two novel tetrahydrofuran lignans (3 and 4), and other 16 known lignans were isolated first time from M. biondii. The antiallergic effects of compounds 1-33 on mouse bone marrow-derived mast cells (BMMCs) degrunaliton were evaluated and results showed that compounds 7, 8, 13, 15 and 18 could significantly inhibited β-hex release on BMMCs. The results proved that furofuran and tetrahydrofuran lignans were the main constituents in M. biondii and their antiallergic effects were related with suppressing mast cell activation.
Mild sonochemical exfoliation of bromine-intercalated graphite: a new route towards graphene
Creators: name: Widenkvist, E.
name: Boukhvalov, D. W.
name: Rubino, S.
name: Akhtar, S.
name: Lu, J.
name: Quinlan, R. A.
name: Katsnelson, M. I.
name: Leifer, K.
name: Grennberg, H.
name: Jansson, U.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A method to produce suspensions of graphene sheets by combining solution-based bromine intercalation and mild sonochemical exfoliation is presented. Ultrasonic treatment of graphite in water leads to the formation of suspensions of graphite flakes. The delamination is dramatically improved by intercalation of bromine into the graphite before sonication. The bromine intercalation was verified by Raman spectroscopy as well as by x-ray photoelectron spectroscopy (XPS), and density functional theory (DFT) calculations show an almost ten times lower interlayer binding energy after introducing Br2 into the graphite. Analysis of the suspended material by transmission and scanning electron microscopy (TEM and SEM) revealed a significant content of few-layer graphene with sizes up to 30 $mu$m, corresponding to the grain size of the starting material.
description: 10 pages 4 figures
The Effects of COVID-19-Induced Global Economic Recession on Processed Food Trade
Creators: name: Luckstead, Jeff
name: Devadoss, Stephen
name: Lim, Sunghun
name: Luckstead, Jeff
name: Devadoss, Stephen
name: Lim, Sunghun
Publisher: name: Unknown
Year: 2021
Subjects: International Relations/Trade

description: Paper# 18143
Formation of eta-mesic nuclei by (pi,N) reaction and N^*(1535) in medium
Creators: name: Nagahiro, H.
name: Jido, D.
name: Hirenzaki, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate formation spectra of eta-nucleus systems in (pi,N) reactions with nuclear targets, which can be performed at existing and/or forthcoming facilities, including J-PARC, in order to investigate eta-nucleus interactions. Based on the N^*(1535) dominance in the eta N system, eta-mesic nuclei are suitable systems for study of in-medium properties of the N^*(1535) baryon resonance, such as reduction of the mass difference of N and N^* in nuclear medium, which affects level structure of the eta and N^*-hole modes. We find that clear information on the in-medium N^*- and eta-nucleus interactions can be obtained through the formation spectra of the eta-mesic nuclei. We also discuss the experimental feasibilities by showing several spectra of (pi,N) reactions calculated with possible experimental settings. Coincident measurements of pi N pairs from the N^* decays in nuclei help us to reduce backgrounds.
description: 12 pages, 10 figures
Investigating female learners’ attitude and challenges towards mathematics at the department of mathematics, Injibara college of teachers’ education, Injibara, Ethiopia
Creators: name: Kebede, Workineh
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Science Policy
subject: Mental Health

description: The main purpose of this research was to investigate the current status of female students’ attitude and challenges towards mathematics at the Department of Mathematics, Injibara College of Teachers’ Education (henceforth, Injibara CTE). The mixed methods approach with concurrent embedded strategy and descriptive survey design were used. A questionnaire survey was administered to 85 female mathematics department students using a comprehensive sampling technique. Moreover, face-to-face interviews were administered to the mathematics department head and the college deans purposively to gather pertinent data about the challenges female students face when learning mathematics. Both quantitative (mean, standard deviation, t-test, and post hoc test) and qualitative (thematic analysis and narration) data analysis techniques were employed. Cronbach’s alpha coefficients for internal consistency reliability were calculated and reported to ensure the instrument validity. The main findings of this study were that female students in the department of mathematics had positive attitude toward mathematics on an overall and component-by-component basis (affective, cognitive, and behavioral). Moreover, they had shown a positive attitude across pre-service and in-service training programs. There was a statistically significant difference in attitude between the two programs in favor of the pre-service program. The challenges female students faced with learning mathematics were student-related, teacher-related, peer-related, material resource-related, and administrative-related. Recommendations include: mathematics teachers should encourage female students and use appropriate teaching methods, instructional media, and assessment techniques; college administration should provide material resources needed for mathematics learning; and additional research shall be conducted in this area to ensure validity and reliability.
Spin Systems and Computational Complexity
Creators: name: Gottesman, Daniel
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: I give a very brief non-technical introduction to the intersection of the fields of spin systems and computational complexity. The focus is on spin glasses and their relationship to NP-complete problems.
description: 3 pages, prepared for a special issue of Physics in Canada
Modelling of a sediment bank along the King River, Western Tasmania
Creators: name: Polglase, K
Publisher: name: University Of Tasmania
Year: 2023

description: In the late 1880s, Mt Lyell Copper Mine was established at Queenstown. Between 1916 and 1994 the ore pre-concentration process adopted by the mine discharged an estimated 97 million tonnes of mine tailings, 45 million tonnes of smelter slag and 10 million tonnes of top soil into the Queen River
The Use Value of Irrigation Water for Brazilian Agriculture
Creators: name: Alves, Gabriel De Sampaio Morais
name: Fulginiti, Lilyan
name: Perrin, Richard
name: Braga, Marcelo José
name: Alves, Gabriel De Sampaio Morais
name: Fulginiti, Lilyan
name: Perrin, Richard
name: Braga, Marcelo José
Publisher: name: Unknown
Year: 2021
Subjects: Resource /Energy Economics and Policy
Environmental Economics and Policy

description: Paper# 18203
Measuring Performances, Skill and Accuracy in Operational Oceanography: New Challenges and Approaches.
New Frontiers in Operational Oceanography.
Creators: name: Hernandez, Fabrice
name: Smith, Greg
name: Baetens, Katrijn
name: Cossarini, Gianpiero
name: Garcia- Hermosa, Isabel
name: Drévillon, Marie
name: Maksymczuk, Jan
name: Melet, Angélique
name: Régnier, Charly
name: Schuckmann, Karina Von
Publisher: name: GODAE OceanView
Year: 2018
Subjects: subject: Parameter Discipline::Physical oceanography

description: Operational oceanography is now established in many countries, focusing on global, regional, or coastal areas, and targeting different aspects of the « blue », « white » or « green » ocean processes in order to provide reliable information to users. There are nowadays a large variety of interests and users, with different disciplines and levels of expertise. Validation and verification of operational products and systems are evolving in order to anticipate user’s needs, and better quantify the level of confidence on all these variety of ocean products. Operational oceanography evaluation development is in front of key issues: Ocean models are reaching the submesoscale description, which is currently not adequately observed; many products are available now for a given ocean variable, and often discrepancies are larger than similarities; real time forecasting systems are also challenged by reanalyses or reprocessed time series; operational systems are getting more complex, with coupled modelling, where errors from the different compartment need to be carefully addressed in order to measure their performance and provide further improvements. In parallel, the global ocean observing system is continuously completed with additional satellites in the constellation, with innovative sensors on new satellite missions, with efforts to better integrate the global, regional and coastal in-situ observing capabilities, and the design of new instrument, like the BGC-Argo that should bring an enhanced description of the ocean biogeochemical variability. This book chapter provides an overview of the existing, mature, validation and verification science in operational oceanography; discusses the ongoing efforts and new strategies; presents some of the structured groups and outcomes; and lists a series of challenges on the field.
Technical Efficiency in Finger Millet and Paddy Crop in Southern Karnataka: Application of Data Envelop Analysis and Stochastic Frontier Approach
Creators: name: Hamsa, K.R.
name: Umesh, K.B.
name: Hamsa, K.R.
name: Umesh, K.B.
Publisher: name: Unknown
Year: 2021
Subjects: Crop Production/Industries
Research and Development/Tech Change/Emerging Technologies

description: Paper# 18212
Equivariant Groebner bases and the Gaussian two-factor model
Creators: name: Brouwer, Andries E.
name: Draisma, Jan
Publisher: name: arXiv
Year: 2009
Subjects: subject: Commutative Algebra (math.AC)
subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: Exploiting symmetry in Groebner basis computations is difficult when the symmetry takes the form of a group acting by automorphisms on monomials in finitely many variables. This is largely due to the fact that the group elements, being invertible, cannot preserve a term order. By contrast, inspired by work of Aschenbrenner and Hillar, we introduce the concept of equivariant Groebner basis in a setting where a_monoid_ acts by_homomorphisms_ on monomials in potentially infinitely many variables. We require that the action be compatible with a term order, and under some further assumptions derive a Buchberger-type algorithm for computing equivariant Groebner bases. Using this algorithm and the monoid of strictly increasing functions N -> N we prove that the kernel of the ring homomorphism R[y_{ij} | i,j in N, i > j] -> R[s_i,t_i | i in N], y_{ij} -> s_i s_j + t_i t_j is generated by two types of polynomials: off-diagonal 3x3-minors and pentads. This confirms a conjecture by Drton, Sturmfels, and Sullivant on the Gaussian two-factor model from algebraic statistics.
description: 11 pages, improved exposition