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181.
ZFreet·Cheung 《中国发明与专利》2009,(8):20-23
迈克尔·杰克逊(MichaelJackson,歌迷昵称MJ),一个享誉世界的歌王和舞王,一个浑身上下充满神秘的力量,被称为神奇怪物的人,他的突然离世再次引起了人们对他排山倒海般的关注,只是这次变得更加温情、善意,更加乐意将他还原为本真的普通人。比如,人们突然发现,原来天王不仅仅是靠四肢舞蹈,同时还在靠智慧、头脑,甚至专利…… 相似文献
182.
183.
Barley S. Y. Mak Alan C. K. Cheung Xin Guo Philip C. Abrami Anne Wade 《Education and Information Technologies》2017,22(6):2671-2691
The current paper examined the effects of A Balanced Reading Approach for Children Always Designed to Achieve Best Results for All (ABRA), a web-based literacy programme developed by the the Centre for the Study of Learning and Performance (CSLP) at Concordia University, on primary school children in Hong Kong. The participants were 249 Primary 1 students from two low social economic status schools in Hong Kong and the two schools were well-matched on many demographic characteristics. All participating students were pre-tested in the fall and post-tested in the following spring. After adjusting for pretest differences, the treatment school scored significantly higher than the controls on three of the six outcome measures at post-tests: phoneme-grapheme correspondence (ES = +0.22, p < 0.05), phoneme segmentation (ES = +0.46, p < 0.00), and nonsense word fluency (ES = +0.22, p < 0.06). Both treatment and control students scored similarly on word reading, listening comprehension, and initial sound fluency. The outcomes of the study provides some promising evidence of the effects of ABRA on Chinese primary students in Hong Kong, especially on the enhancement of phonological skills, thus leading to early success in the formative years of learning English as a Second Language (ESL). Practical implications are discussed. 相似文献
184.
In this work, we demonstrate the use of stereolithographic 3D printing to fabricate millifluidic devices, which are used to engineer particles with multiple compartments. As the 3D design is directly transferred to the actual prototype, this method accommodates 3D millimeter-scaled features that are difficult to achieve by either lithographic-based microfabrication or traditional macrofabrication techniques. We exploit this approach to produce millifluidic networks to deliver multiple fluidic components. By taking advantage of the laminar flow, the fluidic components can form liquid jets with distinct patterns, and each pattern has clear boundaries between the liquid phases. Afterwards, droplets with controlled size are fabricated by spraying the liquid jet in an electric field, and subsequently converted to particles after a solidification step. As a demonstration, we fabricate calcium alginate particles with structures of (1) slice-by-slice multiple lamellae, (2) concentric core-shells, and (3) petals surrounding the particle centers. Furthermore, distinct hybrid particles combining two or more of the above structures are also obtained. These compartmentalized particles impart spatially dependent functionalities and properties. To show their applicability, various ingredients, including fruit juices, drugs, and magnetic nanoparticles are encapsulated in the different compartments as proof-of-concepts for applications, including food, drug delivery, and bioassays. Our 3D printed electro-millifluidic approach represents a convenient and robust method to extend the range of structures of functional particles. 相似文献
185.
Kem Z.K. Zhang Christy M.K. Cheung Matthew K.O. Lee 《International Journal of Information Management》2014
The prevalence of social media has provided consumers with many opportunities to post online reviews on a wide range of products on the Internet. In this study, we attempt to investigate the moderating effect of inconsistent reviews (i.e., a mix of positive and negative reviews) on consumers’ purchase decision. We further examine whether the effect will differ from female to male consumers. 相似文献
186.
In this study, the under-examined area of privacy perception and protection on Chinese social media is investigated. The prevalence of digital technology shapes the social, political and cultural aspects of the lives of urban young adults. The influential Chinese social media platform WeChat is taken as a case study, and the ease of connection, communication and transaction combined with issues of commercialisation and surveillance are discussed in the framework of the privacy paradox. Protective behaviour and tactics are examined through different perceptions of privacy in the digital age. The findings of this study suggest that users possess certain amount of freedoms on WeChat. However, users’ individual privacy attitudes and behaviour in practice suggest they have a declined sense of their own freedom and right to privacy. A privacy paradox exists when users, while holding a high level of concerns, in reality do little to further the protection of their personal information on WeChat. We argue that once a user has ingrained part of their social engagement within the WeChat system, the incentive for them to remain a part of the system outweighs their requirement to secure their privacy online as their decision-making is largely based on a simple cost-benefit analysis. The power and social capital yielded via WeChat is too valuable to give up as WeChat is widely used not only for private conversations, but also for study or work-related purposes. It further blurs the boundaries between the public, the professional and the private, which is a rather unique case compared with other social media around the world. 相似文献