Visualization of Wormlike Micelle Fluid Flow in a Mixing Tank     

Hongyuan Wei  Jieliang Lu  Chong Gu  Kate Xu  Boonho Ng  Leping Dang 《天津大学学报(英文版)》2018,(4)

In this study,particle image velocimetry was applied to investigate flow fields of wormlike micelle(WLM) fluids in a mixing tank equipped with a four-blade,down-pumping,pitched blade turbine. First,the rheology of WLM fluids was investigated,and the Carreau model was utilized to describe their apparent viscosity. Then,the effects of the rotation speeds and rheological properties on the flow fields were studied using different WLM fluids at different rotation speeds. The results revealed that with increasing Reynolds number,the discharge angle decreases and the carven size increases. Furthermore,elastic effects of WLM fluids lead to a more curved flow and a smaller carven.  相似文献   

My Religious Education Sangha and Dharma: Learning-Teaching as an Asian in the North American Diaspora     

Greer Anne Wenh-In Ng 《Religious education (Chicago, Ill.)》2018,113(2):165-172

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A new presentation and exploration of human cerebral vasculature correlated with surface and sectional neuroanatomy     

Wieslaw L. Nowinski  Arumugam Thirunavuukarasuu  Ihar Volkau  Yevgen Marchenko  Bivi Aminah  Arnaud Gelas  Su Huang  Looi Chow Lee  Jimin Liu  Ting Ting Ng  Natalia G. Nowinska  Guoyu Yu Qian  Fiftarina Puspitasari  Val M. Runge 《Anatomical sciences education》2009,2(1):24-33

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Teachers’ experience with inclusive education in Singapore     

Lay See Yeo  Wan Har Chong  Maureen F. Neihart  Vivien S. Huan 《Asia Pacific Journal of Education》2016,36(1):69-83

Teachers’ positive attitude is most critically and consistently associated with successful inclusion. However, little is known about teachers’ first-hand encounters with inclusive education in Singapore. We present findings from a qualitative study on inclusion based on focus group interviews with 202 teachers from 41 resourced primary schools. The data were transcribed and coded using Interpretive Phenomenological Analysis and NVIVO software. Two broad clusters identified were teachers’ positive and negative experiences in implementing inclusion. More reference was made to negative than positive experiences. The most dominant negative experience was stress from challenging behaviours and instructional difficulties of catering adequately for diverse needs in the same classroom. The most salient positive experience was satisfaction with pupils’ progress and new learning for teachers. Classroom practices that facilitated inclusion and the value of training in shaping teachers’ attitudes towards inclusion were highlighted.  相似文献   

Implementation and evaluation of computer-aided Mandarin phonemes training system for hearing-impaired students     

Hui-Jen Yang  Yun-Long Lay 《British journal of educational technology : journal of the Council for Educational Technology》2005,36(3):537-551

A computer‐aided Mandarin phonemes training (CAMPT) system was developed and evaluated for training hearing‐impaired students in their pronunciation of Mandarin phonemes. Deaf or hearing‐impaired people have difficulty hearing their own voice, hence most of them cannot learn how to speak. Phonemes are the basis for learning to read and speak in Mandarin. Thus, the main purpose of this study is to use voice‐recognition techniques to develop a Mandarin phoneme training system for the self‐training of hearing‐impaired people. The system analyses the spoken Mandarin phoneme of a hearing‐impaired person, compares it with the phonemes database, and shows the results on the computer monitor. Our CAMPT system helps hearing‐impaired people pronounce Mandarin phonemes, and the system automatically gives the learner a percentage score for each phoneme. In other words, learners can receive instant feedback from the system. Experiments conducted among high school students diagnosed with hearing impairment revealed that our system can help students learn the Mandarin phonemes with a neural net recognition algorithm for different users. After five months, most learners can pronounce 95% of the phonemes correctly.  相似文献   

Technology-Enhanced Science Partnership Initiative: Impact on Secondary Science Teachers     

Ng  Wan  Fergusson  Jennifer 《Research in Science Education》2019,49(1):219-242

Research in Science Education - The issue of student disengagement in school science continues to pose a threat to lifting the participation rates of students undertaking STEM courses and careers...  相似文献   

Race,academic achievement,and self-concept of ability     

Robert Lay  Julie Wakstein 《Research in higher education》1985,22(1):43-64

In the year-and-a-half since the College Board released detailed tables on SAT scores by race, much of the heated reaction has now abated. This study explores the data behind those tables and seeks a fuller explanation of the observed differences in SAT scores among racial and ethnic segments of college-bound test takers. It highlights a social psychological correlate that mediates between environmental factors and SAT performance, beginning with the finding that blacks at the same level of test performance exhibit greater self-esteem than whites on a series of self-rated abilities. Implications of the analysis are discussed and directions for further research suggested.Presented at the 24th Annual Forum of the Association for Institutional Research, Fort Worth, Texas, May 1984.  相似文献   

Designing a humane multimedia interface for the visually impaired     

Claude Ghaoui  M. Mann  Eng Huat Ng 《European Journal of Engineering Education》2001,26(2):139-149

Whilst graphical user interfaces (GUI) have gained much popularity in recent years, the need of the visually impaired to use applications in a non-visual environment is great. This paper promotes the provision of interfaces that allow users to access most of the functionality of existing GUIs using speech. This has been achieved by the design of a speech control tool that incorporates speech recognition and synthesis into existing packaged software, such as Teletext, the Internet or a word processor. The tool developed has taken the menu structure as a means of demonstrating what is accessible by the use of speech input and output. The tool provides the facility to dump screen text into clipboard and read it out loud. Adapting existing GUI applications in this way requires successful integration of speech, which in turn requires a profound understanding of the medium and the development of human engineering techniques.  相似文献   

Voices of donors: Case reports of body donation in Hong Kong     

Chiu HY  Ng KS  Ma SK  Chan CH  Ng SW  Tipoe GL  Chan LK 《Anatomical sciences education》2012,5(5):295-300

Body donation is important for medical education and academic research. However, it is relatively rare in Hong Kong when compared with many Western countries. Comprehensive research has been performed on the motivation for body donation in Western countries; however, there is still insufficient research on body donation in Hong Kong to provide information on how to increase the body‐donation rate. To understand the factors involved in the decision to donate one's body, the authors interviewed a registered donor and the daughter of another donor in Hong Kong. The authors interpreted the information collected in light of the available published reports, which mostly focus on body donation in Western countries. Despite the consistency of some demographic factors and motivations between the participants in our study and those investigated in the published reports from Western countries, there are differences in education level and socioeconomic status between the donors in our study and those from Western studies. The authors also suggest that Confucianism and Buddhism in Chinese culture may motivate potential body donors in Hong Kong. Other important factors that influence the body‐donation decision may include family members' body donation, registration as organ donors, and good doctor–patient relationships. Although case report studies have their limitations, this study allows us to explore the complexity of events and establish the interconnectivity of factors involved in body donation, which could not be achieved in previous survey‐based studies. © 2012 American Association of Anatomists.  相似文献   

Iterative method on well bore boundary in numerical modeling of variably saturated flow     

王俊  黄岁樑 《天津大学学报(英文版)》2012,18(2):104-111

An iterative method was developed for incorporating the well bore boundary into the finite difference model of water flow in variably saturated porous media. Six cases were presented involving groundwater pumping or injection to demonstrate the advantages of the iterative method over the traditional method. For the iterative method, the total flux gradually approached the well discharge and the flux profile was non-uniform. And the iterative method took into account the variation of well bore water table. Compared to the traditional method, the iterative method can simulate the variably saturated flow caused by pumping or injection more realistically.  相似文献