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| 1 | Protection of bridge piers against scouring with tetrahedral frames显示文摘Armoring countermeasures, such as riprap stones, are the primary method used to protect bridge piers against scouring; however, these methods have not had definitive success. Recently, flow-altering countermeasures, such as sacrificial piles, have been tested as an alternative to armoring countermeasures. This study investigated the mechanics of an innovative flow-altering countermeasure device, frames in the shape of tetrahedrons that act as a pier-scour countermeasure. Results of measured characteristics for turbulence flow showed that the flow around the tetrahedral frames can be divided into three regions: (1) a deceleration region near the sediment bed; (2) an acceleration region in the middle of water depth region; and (3) a restoration region near the water surface. The velocity magnitudes, turbulent intensities and vorticities decreased in the deceleration region, increased in the acceleration region and reverted to that of the unprotected condition in the restoration region. This pier-scour countermeasure is innovative because of its ability to dissipate energy associated with the downflow and the horseshoes vortex generated around the bridge pier. The scour tests revealed that the frames protected the foundation of bridge piers against scour. The experimental results showed that the percentage reduction of scour depth decreased as the velocity ratio, U/U c , decreased, reaching a value of 50% for the range of parameters tested in this study. Moreover, its efficiency was dependent on the placement density of the frames. The data showed that the frames were more effective when η was larger. However, their influence becomes less significant when η≥ 0.16. | Hong-Wu TANG Bing DING Yee-Meng CHIEW Shi-Long FANG | 2009 | International Journal of Sediment Research2009，24，4： | 14 |
| 2 | Environmental application of three-dimensional graphene materials as adsorbents for dyes and heavy metals: Review on ice-templating method and adsorption mechanisms显示文摘The remediation of wastewater requires treatment technologies which are robust, efficient,simple to operate and affordable such as adsorption. Lately, three-dimensional(3D)graphene based materials have attracted significant attention as effective adsorbents for wastewater treatment. The intrinsic properties of 3D graphene structure such as large surface area and interconnected porous structure can facilitate the transport of pollutants into the 3D network and provide abundant active sites for trapping the pollutants. For the synthesis of 3D graphene structure, ice-templating is commonly practiced due to its facile steps, cost effectiveness and high scalability potential. This review covers the icetemplating fabrication technique for 3D graphene based materials and their application as adsorbents in eliminating dyes and heavy metals from aqueous media. The assembly mechanisms of the ice-templating fsynthesis are comprehensively discussed. Further discussion on the fundamental principles, critical process parameters and characteristics of ice-templated 3D graphene structures is also included. A thorough review on the mechanisms for batch adsorption of dyes and heavy metals is presented based on the structures and properties of the 3D graphene materials. The review further evaluates the dynamic adsorption in packed columns and the regeneration of 3D graphene based materials. | Kar Chiew Lai Lai Yee Lee Billie Yan Zhang Hiew Suchithra Thangalazhy-Gopakumar Suyin Gan | 2019 | Journal of Environmental Sciences2019，31，5： | 13 |
| 3 | Characterization of horseshoe vortex in a developing scour hole at a cylindrical bridge pier显示文摘Since local scour at bridge piers in rivers and estuaries is a major cause of bridge failure, estimation of the maximum local scour depth is of great importance to hydraulic and coastal engineers. Although numerous studies that focus on scour-depth prediction have been done and published, understanding of the flow and turbulence characteristics of the horseshoe vortex that drives the scour mechanism in a developing scour hole still is immature. This study aims to quantify the detailed turbulent flow field in a developing clear-water scour hole at a circular pier using Particle Image Velocimetry (PIV). The distributions of velocity fields, turbulence intensities, and Reynolds shear stresses of the horseshoe vortex that form in front of the pier at different scour stages (t=0, 0.5, 1, 12, 24, and 48 h) are presented in this paper. During scour development, the horseshoe vortex system was found to evolve from one initially small vortex to three vortices. The strength and size of the main vortex are found to increase with increasing scour depth. The regions of both the maximum turbulence intensity and Reynolds shear stress are found to form at a location upstream of the main vortex, where the large turbulent eddies have the highest possibility of occurrence. Results from this study not only provide new insight into the complex flow-sediment interaction at bridge piers, but also provide valuable experimental databases for advanced numerical simulations. | Dawei Guan Yee-Meng Chiew Maoxing Wei Shih-Chun Hsieh | 2019 | International Journal of Sediment Research2019，34，2： | 8 |
| 4 | Hierarchical TiO2-B nanowire@α-Fe2O3 nanothorn core-branch arrays as superior electrodes for lithium-ion microbatteries显示文摘这份报纸为层次 TiO 的合成报导一个简单还有效的方法 < 潜水艇 class= “ a-plus-plus ” > 2 -B nanowire@-Fe < 潜水艇 class= “ a-plus-plus ” > 2 O < 潜水艇 class= “ a-plus-plus ” > 3 nanothorn 核心分支基于一条逐步的热水的途径穿。同样制作的混合数组为锂离子电池作为高能力的阳极显示出出色的性能。在这研究的关键设计是核心分支混血儿体系结构,它提供大表面不仅为锂离子插入 / 抽取的活跃地点,而且为电子和锂离子由于减少的散开路径启用快费用运输。 TiO 的属性的古怪联合<潜水艇class=“ a-plus-plus ”> 2 (好结构的稳定性)和 Fe <潜水艇class=“ a-plus-plus ”> 2 O <潜水艇class=“ a-plus-plus ”> 3 (大特定的能力)向混合数组电极提供几理想电气化学的特征:大可逆能力(800 mAstalline 和大区域瞬间 < 潜水艇 class= “ a-plus-plus ” > 由化学蒸汽免职方法的 2 层。先锋的数量的小心的控制在大区域的合成被发现到关键因素高度水晶的薄片。层的厚度被拉曼光谱学和原子力量显微镜学证实。光性质和化学作文被光致发光(PL ) 和 X 光检查光电子光谱学学习。在 1.82 eV 的强壮的直接激子的排出物的出现(A 激子,与规范的 PL i 械 ? 械?? | Hui Xia Wen Xiong Chiew Keat Lim Qiaofeng Yao Yadong Wang Jianping Xie | 2014 | Nano Research2014，7，12： | 7 |
| 5 | Therapeutic interventions for heart failure with preserved ejection fraction:A summary of current evidence显示文摘Heart failure with preserved ejection fraction(HFPEF)is common and represents a major challenge in cardiovascular medicine.Most of the current treatment of HFPEF is based on morbidity benefits and symptom reduction.Various pharmacological interventions available for heart failure with reduced ejection fraction have not been supported by clinical studies for HFPEF.Addressing the specific aetiology and aggressive risk factor modification remain the mainstay in the treatment of HFPEF.We present a brief overview of the currently recommended therapeutic options with available evidence. | Muhammad Asrar ul Haq Chiew Wong Vivek Mutha Nagesh Anavekar Kwang Lim Peter Barlis David L Hare | 2014 | World Journal of Cardiology2014，6，2： | 7 |
| 6 | Incipient motion of cohesionless sediments on riverbanks with ground water injection显示文摘这研究在河岸斜坡经分解上并且试验性地在非连贯的沉积粒子的起始的运动上调查地面水注射的影响。由在力量分析包括水力的坡度,批评条件被导出说明渗出物流动的效果,证明水力的坡度和河岸斜坡正在管理的渗出物在在一条河岸上修改沉积的早期的运动的参数倾斜。试验性的调查为各种各样的河岸斜坡和注射的水力的坡度在开隧道的斜槽被执行,证明批评砍有减少的河岸斜坡和钳子的压力增加,当注射减少批评价值时。所有试验性的数据在注射的情况中与批评条件的理论导出的表达式同意很好。 | Yan LU Yong-jun LU Yee-meng CHIEW | 2012 | International Journal of Sediment Research2012，27，1： | 5 |
| 7 | EDA: an enhanced dual-active algorithm for location privacy preservation in mobile P2P networks显示文摘Various solutions have been proposed to enable mobile users to access location-based services while preserving their location privacy. Some of these solutions are based on a centralized architecture with the participation of a trustworthy third party, whereas some other approaches are based on a mobile peer-to-peer (P2P) architecture. The former approaches suffer from the scalability problem when networks grow large, while the latter have to endure either low anonymization success rates or high communication overheads. To address these issues, this paper deals with an enhanced dual-active spatial cloaking algorithm (EDA) for preserving location privacy in mobile P2P networks. The proposed EDA allows mobile users to collect and actively disseminate their location information to other users. Moreover, to deal with the challenging characteristics of mobile P2P networks, e.g., constrained network resources and user mobility, EDA enables users (1) to perform a negotiation process to minimize the number of duplicate locations to be shared so as to significantly reduce the communication overhead among users, (2) to predict user locations based on the latest available information so as to eliminate the inaccuracy problem introduced by using some out-of-date locations, and (3) to use a latest-record-highest-priority (LRHP) strategy to reduce the probability of broadcasting fewer useful locations. Extensive simulations are conducted for a range of P2P network scenarios to evaluate the performance of EDA in comparison with the existing solutions. Experimental results demonstrate that the proposed EDA can improve the performance in terms of anonymity and service time with minimized communication overhead. | Yan-zhe CHE Kevin CHIEW Xiao-yan HONG Qiang YANG Qin-ming HE | 2013 | Journal of Zhejiang University-Science C(Computers and Electronics)2013，14，5： | 3 |
| 8 | 基于期望效用-熵模型的基金评级方法及其在中国基金评级中的应用显示文摘基金评级对于投资者来说具有重要的参考价值,研究合适的基金评级方法非常必要。本文针对晨星评级对风险调整和预测能力不足的特征,研究应用期望效用-熵(EU-E)模型基金评级方法对我国开放式基金进行评级的预测能力;并以Sharpe指数、Jensen、Fama-French三因素和Carhart四因素α作为业绩指标,利用固定效应面板数据回归模型对期望效用-熵模型和随机效应面板数据回归模型对晨星基金评级的预测能力进行比较分析。采用样本期由2011年2月到2016年6月的261只基金为研究样本进行评级;研究结果表明,基于期望效用-熵平衡系数λ=0.25和0.75时,EU-E模型基金评级方法评级具有良好的预测能力,而晨星评级预测能力较弱。特别地,λ=0.25和0.75时,EU-E模型评级的五星级基金业绩优于晨星评级对应的基金业绩,而且相比于晨星评级可以更好地区分不同星级基金的业绩。另外,研究结论对于短期、中期和长期的样本都是稳健的。 | 杨继平 石晨晓 Daniel CHIEW Judy QIU Sirimon TREEPONGKARUNA | 2019 | 中国管理科学2019，27，12： | 3 |
| 9 | Online volume rendering of incrementally accumulated LSCEM images for superficial oral cancer detection显示文摘Laser scanning confocal endomicroscope(LSCEM)has emerged as an imaging modality which provides noninvasive,in vivo imaging of biological tissue on a microscopic scale.Scientific visualizations for LSCEM datasets captured by current imaging systems require these datasets to be fully acquired and brought to a separate rendering machine.To extend the features and capabilities of this modality,we propose a system which is capable of performing realtime visualization of LSCEM datasets.Using field-programmable gate arrays,our system performs three tasks in parallel:(1)automated control of dataset acquisition;(2)imaging-rendering system synchronization;and(3)realtime volume rendering of dynamic datasets.Through fusion of LSCEM imaging and volume rendering processes,acquired datasets can be visualized in realtime to provide an immediate perception of the image quality and biological conditions of the subject,further assisting in realtime cancer diagnosis.Subsequently,the imaging procedure can be improved for more accurate diagnosis and reduce the need for repeating the process due to unsatisfactory datasets. | Wei Ming Chiew Feng Lin Kemao Qian Hock Soon Seah | 2011 | World Journal of Clinical Oncology2011，2，4： | 2 |
| 10 | Associations of AT(N) biomarkers with neuropsychiatric symptoms in prechnical Alzheimer’s disease and cognitively unimpaired individuals显示文摘The development of in vivo biomarkers of Alzheimer's disease(AD)has advanced the diagnosis of AD from a clinical syndrome to a biological construct.The preclinical stage of AD continuum is defined by the identification of AD biomarkers crossing the pathological threshold in cognitively unimpaired individuals.While neuropsychiatric symptoms(NPS)are non-cognitive symptoms that are increasingly recognized as early manifestations of AD,the associations of NPS with AD pathophysiology in preclinical AD remain unclear.Here,we review the associations between NPS and AD biomarkers amyloid-(3(Aβ),tau and neurodegeneration in preclinical AD and cognitivelyunimpaired individuals in 19 eligible English-language publications(8 cross-sectional studies,10 longitudinal,1 both cross-sectional and longitudinal).The cross-sectional studies have consistently shown that NPS,particularly depressive and anxiety symptoms,are associated with higher Aβ.The longitudinal studies have suggested that greater NPS are associated with higher Aβ and cognitive decline in cognitively unimpaired subjects over time.However,most of the studies have either cross-sectionally or longitudinally shown no association between NPS and tau pathology.For the association of NPS and neurodegeneration,two studies have shown that the cerebrospinal fluid total-tau is linked to longitudinal increase in NPS and that the NPS may predict longitudinal metabolic decline in preclinical AD,respectively.However,evidence for the association between atrophy and NPS in preclinical AD is less consistent.Therefore,future longitudinal studies with well-designed methodologies and NPS measurements are required not only to determine the relationship among AT(N)biomarkers,NPS and cognitive decline,but also to elucidate the contribution of comorbid pathology to preclinical AD. | Kok Pin Ng Hui Chiew Pedro Rosa-Neto Nagaendran Kandiah Zahinoor Ismail Serge Gauthier | 2021 | Translational Neurodegeneration2021，10，1： | 2 |
| 11 | Moment Resistance of Steel Ⅰ-Beam to CFT Column Connection显示文摘 | Chiew S P Lie S T Dai C W | 2001 | Journal of Structural Engineering2001，，： | 1 |
| 12 | Application of the quadrilateral area coordinate method: A new element for Mindlin -Reissner plate 显示文摘 | Cen S Long Y Q Yao Z H Chiew S P | 2006 | International Journal for Numerical Methods in Engineering2006，66，1： | 1 |
| 13 | Pre- ferred states in spatial soil moisture patterns: local and nonlocal controls 显示文摘 | Grayson R B Western A W Chiew F H S | 1997 | Water Resources Research1997，33，12： | 1 |
| 14 | Modelling the impacts of climate change on Australian stream flow 显示文摘 | CHIEW F H S MCMAHON T A | 2002 | Hdrological Pro-cesses2002，16，： | 1 |
| 15 | Identification of Circulating MicroRNA Signatures for Breast Cancer Detection显示文摘 | Maurice Chan Chiew Suan Liaw Shen Mo Ji Hwee Huang Tan Chow Yin Wong Aye Aye Thike Puay Hoon Tan Gay Hui Ho Ann Siew-Gek Lee | 2013 | Clinical Cancer Research2013，，： | 1 |
| 16 | Can susceptibility to an antimi- crobial be restored by halting its use? The case of streptomycin versus Enterobacteriaceae 显示文摘 | Chiew YF Yeo SF Hall LM | 1998 | J Antimicro Chemotherapy1998，41，2： | 1 |
| 17 | Simulation of the impacts of climate change on runoff and soil moisture in Australian eatchments显示文摘 | CHIEW F H S WHETTON P H MCMAHON T A | 1995 | Journal of Hydrdogy1995，167，： | 1 |
| 18 | Turbulence measurement in non-uniform open-channel flow using Acoustic Doppler Velocimeter (ADV) 显示文摘 | Song T Chiew Y M | 2001 | Journal of Engineering Mechanics2001，127，3： | 1 |
| 19 | Detection of trend or change in annual flow of Australian Rivers 显示文摘 | Chiew F H S McMahon T A | 1993 | International Journal of Climatology1993，13，： | 1 |
| 20 | Experimental study of pollutant accumulation on an urban road surface显示文摘 | Vaze J Chiew F H S | 2002 | Urban Water2002，4，： | 1 |
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