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Genesis of a Vertical City in Hong Kong
Lau, Stephen S.Y.,Zhang, Qianning Council on Tall Building and Urban Habitat Korea 2015 International journal of high-rise buildings Vol.4 No.2
A vertical city with multifunctional land use turns out to be the most viable solution for an urban condition characterized by increasing density due to population expansion, topographical limitation of buildable land, economic development and the pursuit for collective sustainable living, such as in Hong Kong. This paper presents initial research results from a study on the chronological and typological evolution of tall buildings in the city, from the climate-responsive verandah typology to the mixed-use hyper-commercial podium and residential tower typologies that predominate today, to the ultimate formation of a vertical city. Case studies and surveys have focused on the development of this building typology throughout the decades since the 1920s, substantiating a discussion on the subjective and objective factors contributing to a genesis of the vertical city phenomenon in Hong Kong. The discussion will engage, under the notion of the vertical city, on how residents and visitors adapt to the growing density of the city, and how they accustom themselves to the changing urban morphology over time. Advantages such as high efficiency, spaces savings, time convenience, etc.; and disadvantages such as deficiency in livability, incompatibility of uses, environmental health deficiencies, etc.; serve as a reference for other cities in need of high-density planning due to population and economic growth.
Evaluation of CPI‐based co‐parenting education programs in Hong Kong: Implications for social work
Lau Yuk King 한국사회복지학회 2021 Asian Social Work and Policy Review Vol.15 No.2
This article reports an evaluation study of co-parenting education services in a pilot project on co-parenting support services in Hong Kong. Based on the Cooperative Parenting Institute (CPI) model, there are two levels of education program: Level 1 is an information-based program delivered through talks or lecture format; and Level 2 is participatory, interactive workshops. The study results would provide preliminary support to the effectiveness of the CPI-based education programs in reducing inter-parental conflicts with additional effectiveness on the reduction of putting children in the middle for parents participating in the Level 2 program. In response to the findings, it is recommended to match the participants’ level of conflicts with the appropriate level of program. Parents with high conflict need more intensive program. Consequently, a range of mutual support and booster sessions is recommended to maintain the parents’ commitment to co-parenting after the education. The CPI-based model is recommended to be the reference or protocol for training the social workers of related services. Moreover, cross-disciplinary training may equip supporting professions such as judges, lawyers, and mediators with a common framework to facilitate appropriate court order or advice on the appropriate level of the education program.
Speed Improvement in the Transient Analysis of Transmission Lines
Lau, F. C. M.,Yip, M. 대한전자공학회 1996 APCCAS:Asia Pacific Conference on Circuits And Sys Vol.1 No.1
Partial convergence speedup technique has been incorporated into waveform relaxation method and applied to the transient analysis of transmission lines. Simulation results show another 20% speed improvement compared with that without using the speedup technique.
Lau, E.,Kluger, H.,Varsano, T.,Lee, K.,Scheffler, I.,Rimm, David L.,Ideker, T.,Ronai, Ze'ev A. Cell Press ; MIT Press 2012 Cell Vol.148 No.3
The transcription factor ATF2 elicits oncogenic activities in melanoma and tumor suppressor activities in nonmalignant skin cancer. Here, we identify that ATF2 tumor suppressor function is determined by its ability to localize at the mitochondria, where it alters membrane permeability following genotoxic stress. The ability of ATF2 to reach the mitochondria is determined by PKCε, which directs ATF2 nuclear localization. Genotoxic stress attenuates PKCε effect on ATF2; enables ATF2 nuclear export and localization at the mitochondria, where it perturbs the HK1-VDAC1 complex; increases mitochondrial permeability; and promotes apoptosis. Significantly, high levels of PKCε, as seen in melanoma cells, block ATF2 nuclear export and function at the mitochondria, thereby attenuating apoptosis following exposure to genotoxic stress. In melanoma tumor samples, high PKCε levels associate with poor prognosis. Overall, our findings provide the framework for understanding how subcellular localization enables ATF2 oncogenic or tumor suppressor functions.
An overview of functionalised carbon nanomaterial for organic pollutant removal
Lau Yien Jun,N.M. Mubarak,Min Juey Yee,Lau Sie Yon,Chua Han Bing,Mohammad Khalid,E.C. Abdullah 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.67 No.-
Carbon nanomaterials (CNMs), particularly carbon nanotube and graphene-based materials, are rapidly emerging as one of the most effective adsorbents for wastewater treatment. CNMs hold great potential as new generation adsorbents due to their high surface to volume ratio, as well as extraordinary chemical, mechanical and thermal stabilities. However, implementation of pristine CNMs in real world applications are still hindered due to their poor solubility in most solvents. Hence, surface modification of CNMs is essential for wastewater treatment application in order to improve its solubility, chemical stability, fouling resistance and efficiency. Numerous studies have reported the applications of functionalized CNMs as very promising adsorbents for treating organic and inorganic wastewater pollutants. In this paper, the removal of organic dye and phenol contaminants from wastewater using various type of functionalized CNMs are highlighted and summarized. Challenges and future opportunities for application of these CNMs as adsorbents in sustainable wastewater treatment are also addressed in this paper.
Lau, Ting Fan (Stanley),Meyer-Rochow, V.B. Korean Society of Applied Entomology 2006 Journal of Asia-Pacific Entomology Vol.9 No.1
The eyes of the winged males and larviform, wingless females of the firefly Rhagophthalmus ohbai differ from each other in several respects. Compared with the eyes of the males, those of the females contain fewer (35 versus ca. 3500) and smaller ($20{\mu}m$ versus $24-31{\mu}m$) facets and anatomically they are of the apposition type. Their main function appears to be to detect light intensity changes from day to nighttime; resolving power of the female eye must be poor and e-vector discrimination would be absent. The eyes of the males consist of a smaller, dorsal region of ca. 500 ommatidia of about $250{\mu}m$ length and a larger, ventral region of ca. 2000 ommatidia of about $640{\mu}m$ length. The microvilli of the dorsal eye region are somewhat wider than those of the ventral region (55 nm versus 45 nm) and are less regularly arranged. A tapetal reflecting layer is only present in the dorsal eye region. The small clear-zone between dioptric apparatus and retina in the dorsal eye region would not allow as good a superposition image to be produced as in the ventral eye region with its 5 times wider clear-zone. The regular orientations of the microvilli in the rhabdoms and the lack of a proper tapetum in the ventral eye region suggest that e-vector discrimination should be possible.
The Asia cruise tourism industry: Current trend and future outlook
Lau Yui-yip,Yip Tsz Leung 한국해운물류학회 2020 The Asian journal of shipping and Logistics Vol.36 No.4
More frequent cruisers prefer attractive cruising destinations, excellent geographical locations, diversified oriental cultures, local wildlife, rich tourism resource and exotic experiences in Asia for western travellers. Cruising in the Asian regions has considered as a potential growth in the transport and tourism industry. In this paper, we aim to provide suggestions to industrial practitioners on the development of the cruise port in Asia and identify the key elements of a regional leading cruise hub as desired by different users. Nevertheless, the majority of cruising-related studies were focused on tourism management in the North American and European regions. Relevant cruising studies on maritime transport management in the Asian region are under-researched. In doing so, we newly propose the CRUISE PORT framework by illustrating four representative countries in Asia (South Korea, Japan, Vietnam and Singapore) to look for common characteristics and unique features of cruise ship market in the Asian region. In order to give the valuable information and provide insight into the framework, we carried out semi-structured, in-depth interviews with different practitioners involved in the cruise industry. Through the framework, it fosters the industrial practitioners to implement cruise port strategies, cruise lines strategies and local government planning for the cruise destinations.
Assessing Heat-Treatment Effects on Bovine Cortical Bones by Nanoindentation
Lau, Mei Ling,Lau, Kin Tak,Ku, Harry,Bhattacharyya, Debes,Lee, Joong Hee Trans Tech Publications, Ltd. 2011 Advanced materials research Vol.410 No.-
<P>Among different sterilization methods, heat-treatment of bone is recognized as one of the simple and practical methods to lower the human immunodeficiency virus (HIV) infection and overcome the risks of rejection and disease transfer from allograft and xenograft during bone transplantation. In order to best characterize the micro-structural mechanical property of bone after heat treatment, the nanoindentation technique was applied in this study to measure the localized elastic modulus and hardness for interstitial lamellae and osteons lamellae of bovine cortical bones at temperature 23°C (room temperature-pristine specimen), 37°C, 90°C, 120°C and 160°C, respectively. The elastic modulus (E) and hardness (H) of interstitial lamellae obtained higher values as compared with osteons lamellae which show that interstitial lamellae are more stiff and mineralized than osteons. Moreover, as a specimen pre-heat treated at 90°C, the E and H values of interstitial lamellae and osteons were closed to a pristine specimen. For a specimen pre-heat treated at 120°C, both interstitial lamellae and osteons obtained an increase in E and H values. As a specimen pre-heat treated at 160°C, the interstitial lamellae and osteons obtained a slight decrease in E and H values. These findings are correlated to results reported by other researchers [1, 2] that calcified collagen molecules starts to degenerate at about 120°C and complete at 160°C. Interestingly, when a specimen was pre-heat treated at 37°C, both interstitial lamellae and osteons obtained significant decreases in E values of 57% and 40%, respectively as compared to the pristine specimen; while in H values, there was a decrease of 27.4% and 15%, respectively. Thus, this paper will investigate the mechanical properties of bovine cortical bones under various temperature ranges by nanoindentation technique.</P>