5,314 research outputs found
[[alternative]]Lian...dou/ye Construction
No full text[[abstract]]The thesis deals with the ‘lian…dou/ye …’ construction in modern Chinese. In order to clarify the informational status of ‘lian…’, issues on topic and focus are shown in the first part of this thesis. Then, discussions on semantic functions and conversational implicatures of this construction constitute the sencond part. Lastly, the formal complexity and pedagogical instructions will be presented as well.
Fast and low memory usage coding for image and video based on wavelet transform
No full textA new video codec based on three-dimensional wavelet subband coding with 3-D BCWT is presented. This new video codec has almost identical PSNR performance to the well-known 3-D SPIHT video codec. However, it is much more computationally efficient and uses much less internal memory than 3-D SPIHT. Implementation results of 3-D BCWT show that it can achieve real time decoding with strictly software implementation on a PC. Application of the 3-D BCWT algorithm to volumetric medical images shows that it can also achieve good performance.
Although the BCWT algorithm itself uses much less memory than the SPIHT algorithm, the total system memory usage in BCWT coding is still high due to the large memory consumption of the wavelet transform. In this dissertation, the line-based BCWT algorithm is also presented, which utilizes the line-based wavelet transform to achieve BCWT coding. Due to the backward coding feature of the BCWT algorithm, the line-based BCWT algorithm can significantly reduce the overall system memory usage. Depending upon the image size, the memory usage of the line-based BCWT algorithm can be less than 1% of the memory usage of the SPIHT algorithm. Compared with the original BCWT algorithm, the line-based BCWT algorithm can use less than 2% of the memory that the BCWT algorithm consumes, thus making this algorithm extremely suitable for implementation on resource-limited platforms
Roughness Induced Boundary Layer Transition in Incompressible Flow
No full textThe fluid dynamics process leading to laminar-turbulent transition behind an isolated roughness element is investigated in the incompressible regime using particle image velocimetry. The study covers the effect of roughness size and geometry on the promotion of transition. The measurement domain covers a large streamwise range from the near wake to the onset of the turbulent regime. Planar PIV measurements reveal the basic flow pattern and the turbulent structure of the flow characterizing by the velocity fluctuation statistics (RMS of the streamwise and wall-normal velocity component and Reynolds shear stress). The high Reynolds shear stress level reaching the region near the wall in the downstream area indicates the onset of turbulent boundary layer
Children's stories by Ye Shengtao
No full text(in English) In this master's thesis, we will thoroughly examine two significtant fairy tale collections by the Chinese author Ye Shengtao Daocaoren (1923) and Gudai yingxiong de shixiang (1931). Our motivation is to gain a deeper understanding and appreciation of Ye Shengtao's works for children and explore their didactic value. The first part of the thesis deals with the general historical context of children's literature and the genre of fairy tales, the following part deals with the historical and cultural context focused on the field of education in China. Our goal is to explore and understand the views of Chinese intellectuals at the beginning of the 20th century, as well as Western educators, and gain a deeper understanding of Ye Shengtao's pedagogical work and his pedagogical inspirations. In the analytical part, we then determine and examine the main motifs of Ye Shengtao's fairy tales and address the question of how Ye Shengtao uses and transforms literary elements and motifs from Western authors' fairy tales. As a part of the analysis, we will also focus on the structure of the stories in these collections, and we also examine the characteristics of the characters and the environment in order to understand the author's didactic motivations in his realistic portrayal of the fairy tale world
Numerical investigation of energy deposition for supersonic flow over a 2-D diamond-shaped airfoil
No full textThe research models inviscid compressible flow at Mach 2 over a two dimensional diamond-shaped airfoil. The objective is to study the interaction of the energy deposition added in the upstream flow on the airfoil. Theoretical results without energy deposition in the inlet boundary and numerical results with no filaments, infinitely long symmetric filament, symmetric pulsed filament, and asymmetric pulsed filament, for Mach number, temperature, pressure in the flow field domain, are obtained. An analysis is performed on the drag coefficient acting on the airfoil. FLUENT, Gambit, and C++ are used for the numerical simulation.M.S.Includes bibliographical referencesby Ye Zh
Liu wang qu: ge, ge ju.
No full text江陵詞 ; 雪厂曲 ; 集體編劇雪厂, 葉瓊, 江凌.Music in number notation.Jiang Ling ci ; Xuechang qu ; ji ti bian ju Xuechang, Ye Qiong, Jiang Ling
Boundary layer transition induced by distributed roughness array
No full textThe effects of a finite, spanwise-periodic array of cylindrical roughness elements on boundary layer transition over a NACA 0012 airfoil are investigated at a chord-based Reynolds number of 1.44×105 by using hotwire anemometry and infrared thermography. Both the number and the spanwise spacing of roughness elements in the array are varied in order to study their effect on the wake flow topology. Spanwise interaction between the roughness elements has an effect on the connection and the merging of neighbouring low-speed regions, which results in the formation of merged low-speed blobs (MLSs) that modify the spatial distribution and the amplitudes of the velocity streaks. When the spanwise distance between adjacent roughness elements equals 1.5 times the cylinder diameter, the transition location moves rapidly upstream. In this case, the two neighbouring low-speed regions overlap with each other in the near wake of the roughness, leading to the maximum growth in the velocity streak amplitude and the velocity fluctuations. The number of roughness elements affects the total number of MLSs within the boundary layer. For a single MLS behind a pair of cylinders, the Kelvin-Helmholtz instability dominates the growth of velocity fluctuations around the three-dimensional shear layers. When three cylinders are placed in the array, two MLSs appear in the near wake, which coalesce in to one low-speed blob downstream before the onset of transition, revealing the importance of Kelvin-Helmholtz instability.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Wind Energ
Codebook ordering for vector quantization
No full textAddress predictive vector quantization (APVQ) utilizes an ordered codebook to exploit the dependency among close input vectors. The Kohonen algorithm is often chosen in APVQ. However, the Kohonen algorithm is not applicable while a codebook already exists. In this thesis three methods of ordering an existing codebook have been developed. Theoretically these codebook ordering methods can be utilized in any vector quantization in order to reduce the output bit rate. Here we apply it to two types of vector quantization approaches, geometric vector quantization (GVQ) and vector quantization based on the LBG algorithm. The results of codebook ordering on vector quantization based on the LBG algorithm are quite good. However, codebook ordering does not have good performance on GVQ. Therefore, while applying codebook ordering to one specific VQ, we should consider the property of this VQ in order to achieve a satisfactory result
How PR faced the challenge of the “information superhighway”
No full textBefore the Internet, social media and search engine optimisation, there was the “information superhighway” and the “Megachip age” in the 1980s. Although PR practitioners were slower than other communicators to recognise the potential of Internet and social media, there was some discussion thirty years ago. Drawing on the archive of the International Public Relations Association (IPRA), this paper reviews 21 papers of contemporary discussion over a 15 year period from 1981 to 1996 and draws lessons about the stages of adoption of innovative technology by practitioners. The views of practitioners varied over time. In the initial period from 1981 to 1987 their attitudes ranged from advancing the potential for rapid international outreach (Plank, 1983; Hietpas, 1984) to gloom about deskilling (McPhail 1987) and the future irrelevance of public relations counselling (Pessalano, 1984). From 1989 to 1996, as PR 1.0 (use of email) came in practice, there was less comment but continued concern that the faster information flow was leading to communication “dis-information” (Linning 1995). Only in 1996 was the term “Internet” introduced and lauded as beneficial development (Wilson, 1996). Overall, public relations practitioners are portrayed as slow to understand the benefits of the rapid technical advances in communication and holding doggedly to models of mediated communication. They also failed to foresee that information would be available for more people through IT developments, rather than fewer. The very evident reticence displayed by the IPRA publications sample may indicate why the digital communications sector was able to form outside the purview of the public relations sector and became a competitor to it (Theaker, 2004; Earl & Waddington, 2012)
Liu Ye - the book paintings
No full textThe Beijing-based artist Liu Ye is known for his precise, deftly rendered representational paintings. Drawn equally from contemporary culture and old master painting, Liu's wide-ranging visual touchstones include Piet Mondrian, Miffy the Bunny, and Prada advertisements. In this new publication devoted to his book paintings, the artist examines the book as both a physical object and cultural totem. Playing with geometry and perspective, Liu creates extraordinary and disorienting portraits of this most familiar subject. Liu's Book Painting series, begun in 2013, depicts close-up views of books that are turned open to reveal empty pages, an approach that emphasizes the object's form over its content. Rendering books' material structure--endpapers, binding, spine--in sensual detail, these paintings indicate an obsession with the book as an object and a lifelong love of literature. Liu's father was a children's book author who introduced him to Western writers at a young age, fueling his curiosity and imagination. Many of the books in Liu's father's collection were banned in Cultural Revolution-era China and the artist read them secretly throughout his childhood. This formative experience figures in his popular Banned Books series and in his book paintings in genera
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