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2 results on '"Dan, Zhao"'

1. Chinese students’ motivation for learning German and French in an intensive non-degree programme

Author

Yu Chen, Dan Zhao, and Shen Qi

Subjects
Motivation, German learning, French learning, China, L2MSS, Philology. Linguistics, P1-1091
Abstract

This paper reports on a mixed method study that examined the motivation of 121 students in a 1-year intensive language course in German or French at a Chinese university. Drawing on Dörnyei’s (2009) theory of the L2 Motivational Self System (L2MSS), a survey was conducted to explore their motivation to learn German or French. Regression analyses revealed that learning experience and promotion-focused instrumentality were the predictors for the German learners’ intended learning effort, while ideal L2 self was the predictor for the French learners’ motivation. Furthermore, ought-to self, culture/community interest and prevention-focused instrumentality were excluded in both regression models. In addition, 17 participants’ qualitative data in the interviews suggested that most of them had lower expectations for the value of German or French than for the value of English in improving one’s employability. Instead, they were much more oriented to learn and appreciate the cultural values of these languages. The results provided insight into the complexity of motivation to learn Languages Other than English (LOTEs) in the university context in China, and suggested future direction for research on LOTE learning motivation

Published
2021
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2. Computational Investigation of Varying Plate-Line Geometry and Placement on Wake Vortex Dissipation

Author

C. H. John Wang, Dan Zhao, Frank Holzäpfel, Jorg Schluter, and Anton Stephan

Subjects
020301 aerospace & aeronautics, Engineering, Angle of attack, business.industry, Verkehrsmeteorologie, Direct numerical simulation, Aerospace Engineering, 02 engineering and technology, Mechanics, Structural engineering, Dissipation, Wake, plate-line technology, air traffic density, 01 natural sciences, Lamb–Oseen vortex, 010305 fluids & plasmas, Vortex, 0203 mechanical engineering, 0103 physical sciences, Runway, wake vortices, business, Wake turbulence
Abstract

One of the bottlenecks for the recent increase in air traffic density is near the airport, where wake vortices, bounded by the terrain, could easily rebound into the landing corridor and remain there for a long period of time while maintaining their strength. The threat of near-ground wake vortex could be mitigated by the plate-line technology, which places a series of thin plates across the landing corridor before the runway; the technology was shown to significantly reduce the time it takes for wake vortex dissipation. The current investigation aims to better understand factors such as plate dimension and lateral position influences on the generation of secondary vortex structure and ultimately the dissipation rate of a wake vortex pair. It is found that the wake dissipation could be sped up further by optimizing the lateral position of the plate relative to the obstacle–vortex contact location, while the height of the plate could be significantly reduced without noticeably affecting the performance of the obstacle set.

Published
2018

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