8,656 research outputs found
Examining research productivity of Chinese TEFL academics across departments and institutes
This study aims to benchmark Chinese TEFL academics’ research productivities, as a way to identify and, subsequently, address research productivity issues. This study investigated 182 Chinese TEFL academics’ research outputs and perceptions about research across three Chinese higher education institutions using a literature-based survey. ANOVA, t-tests and descriptive statistics were used to analyse data from and between the three institutions. Findings indicated that more than 70% of the TEFL academics had produced no research in 10 of the 12 research output fields during 2004-2008. The English Language and Literature Department in the national university outperformed all other departments at the three institutes for most of the research output categories. While a majority of the participants seemed to hold positive perceptions about research, t-tests and ANOVA indicated that their research perceptions were significantly different across institutes and departments. Developing TEFL research capacity requires tertiary institutions to provide research-learning opportunities
Coarse-graining of overdamped Langevin dynamics via the Mori-Zwanzig formalism
The Mori–Zwanzig formalism is applied to derive an equation for the evolution of linear observables of the overdamped Langevin equation. To illustrate the resulting equation and its use in deriving approximate models, a particular benchmark example is studied both numerically and via a formal asymptotic expansion. The example considered demonstrates the importance of memory effects in determining the correct temporal behaviour of such systems
The optical depth of white-light flare continuum
The white-light continuum emission of a solar flare remains a puzzle as
regards its height of formation and its emission mechanism(s). This continuum,
and its extension into the near UV, contain the bulk of the energy radiated by
a flare, and so its explanation is a high priority. We describe a method to
determine the optical depth of the emitting layer and apply it to the
well-studied flare of 2002 July~15, making use of MDI pseudo-continuum
intensity images. We find the optical depth of the visible continuum in all
flare images, including an impulsive ribbon structure to be small, consistent
with the observation of Balmer and Paschen edges in other events
Millet agriculture dispersed from Northeast China to the Russian Far East: integrating archaeology, genetics, and linguistics
Broomcorn and foxtail millets were being cultivated in the West Liao River basin in Northeast China by at least the sixth millennium BCE. However, when and how millet agriculture spread from there to the north and east remains poorly understood. Here, we trace the dispersal of millet agriculture from Northeast China to the Russian Far East and weigh demic against cultural diffusion as mechanisms for that dispersal. We compare two routes for the spread of millet into the Russian Far East discussed in previous research—an inland route across Manchuria, and a coastal/inland route initially following the Liaodong Peninsula and Yalu River—using an archaeological dataset including millet remains, pottery, stone tools, spindle whorls, jade and figurines. We then integrate the archaeological evidence with linguistic and genetic findings in an approach we term ‘triangulation’. We conclude that an expansion of agricultural societies in Northeast China during the Middle to Late Hongshan (4000–3000 BCE) coincided with the arrival of millet cultivation in eastern Heilongjiang and the Primorye province of the Russian Far East. Our findings support the inland, Manchuria route for the dispersal of millet to the Primorye and suggest that, as well as long-distance cultural exchange, demic diffusion was also involved. Our results are broadly compatible with the farming/language dispersal hypothesis and consistent with a link between the spread of millet farming and proto-Tungusic, the language ancestral to the contemporary Tungusic languages, in late Neolithic Northeast Asia. © 2020 The Author
Pauli Spin Blockade of Heavy Holes in a Silicon Double Quantum Dot
In this work, we study hole transport in a planar silicon
metal-oxide-semiconductor based double quantum dot. We demonstrate Pauli spin
blockade in the few hole regime and map the spin relaxation induced leakage
current as a function of inter-dot level spacing and magnetic field. With
varied inter-dot tunnel coupling we can identify different dominant spin
relaxation mechanisms. Applying a strong out-of-plane magnetic field causes an
avoided singlet-triplet level crossing, from which the heavy hole g-factor
0.93, and the strength of spin-orbit interaction 110 eV, can
be obtained. The demonstrated strong spin-orbit interaction of heavy hole
promises fast local spin manipulation using only electrical fields, which is of
great interest for quantum information processing.Comment: 15 pages, 4 figure
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Conjoint Analysis of Consumer Preferences to Destination Brand Attributes
The purpose of this study was to investigate the destination image attributes that attract tourists to three similar cities in Shandong Province, China. A survey was developed based on an extensive literature review, and data was collected using a self-administered questionnaire. The study used the method of choice-based conjoint to analyze the data. Results showed that beautiful nature is the most attractive attribute when tourists make their decisions to visit a particular destination
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