Introduction Dr.Ching-Yu Cheng(Figure 1)is currently an Associate Professor of the Academic Medicine Research Institute and the Academic Clinical Program for Ophthalmology and Visual Sciences(Eye ACP)at Duke-NUS Gradu...Introduction Dr.Ching-Yu Cheng(Figure 1)is currently an Associate Professor of the Academic Medicine Research Institute and the Academic Clinical Program for Ophthalmology and Visual Sciences(Eye ACP)at Duke-NUS Graduate School of Medicine;and Department of Ophthalmology,Yong Loo Lin School of Medicine,National University of Singapore.展开更多
The practice of evidence-based medicine (EBM) in recent years has spurred the increased study of the peri-operative period (POP) and has won acclaim. At present, surgeons fully recognize the importance of the POP ...The practice of evidence-based medicine (EBM) in recent years has spurred the increased study of the peri-operative period (POP) and has won acclaim. At present, surgeons fully recognize the importance of the POP and are enthusiastically immersing themselves actively into itsresearch.展开更多
The CARL’s UnCover Reveal and Elsevier Science’s ContentsDirect are web based current alerting services.This paper aims to compare their facilities and performance.Attention is focused on source coverage,profile cre...The CARL’s UnCover Reveal and Elsevier Science’s ContentsDirect are web based current alerting services.This paper aims to compare their facilities and performance.Attention is focused on source coverage,profile creation and revision,data quality,data format,cost of service and extension of service.Key factors for the effective utilization of current alerting services are also discussed.展开更多
以所研发的25 k W水平轴海流能发电机组为对象,分别通过基于叶素动量(BEM)理论的GH-Bladed软件分析方法和基于有限元建模(FEM)理论的计算流体力学(CFD)数值模拟分析方法,对水平海流发电机组的水动力学性能进行理论分析及软件建模,并对...以所研发的25 k W水平轴海流能发电机组为对象,分别通过基于叶素动量(BEM)理论的GH-Bladed软件分析方法和基于有限元建模(FEM)理论的计算流体力学(CFD)数值模拟分析方法,对水平海流发电机组的水动力学性能进行理论分析及软件建模,并对两种分析方法的结果进行对比讨论。分析结果表明,海流流速在机组额定流速附近时,两种方法得到的机组能量捕获效率和推力系数均较接近。当海流流速较高于机组额定流速时,两种方法得到的结果出现明显差异,差异的原因在于CFD方法考虑了海流沿叶轮半径方向的径向流动,而BEM方法未考虑此因素。两种方法的比较研究为水平轴海流能发电机组水动力载荷的后续试验研究提供了理论依据。展开更多
文摘Introduction Dr.Ching-Yu Cheng(Figure 1)is currently an Associate Professor of the Academic Medicine Research Institute and the Academic Clinical Program for Ophthalmology and Visual Sciences(Eye ACP)at Duke-NUS Graduate School of Medicine;and Department of Ophthalmology,Yong Loo Lin School of Medicine,National University of Singapore.
文摘The practice of evidence-based medicine (EBM) in recent years has spurred the increased study of the peri-operative period (POP) and has won acclaim. At present, surgeons fully recognize the importance of the POP and are enthusiastically immersing themselves actively into itsresearch.
文摘The CARL’s UnCover Reveal and Elsevier Science’s ContentsDirect are web based current alerting services.This paper aims to compare their facilities and performance.Attention is focused on source coverage,profile creation and revision,data quality,data format,cost of service and extension of service.Key factors for the effective utilization of current alerting services are also discussed.
文摘以所研发的25 k W水平轴海流能发电机组为对象,分别通过基于叶素动量(BEM)理论的GH-Bladed软件分析方法和基于有限元建模(FEM)理论的计算流体力学(CFD)数值模拟分析方法,对水平海流发电机组的水动力学性能进行理论分析及软件建模,并对两种分析方法的结果进行对比讨论。分析结果表明,海流流速在机组额定流速附近时,两种方法得到的机组能量捕获效率和推力系数均较接近。当海流流速较高于机组额定流速时,两种方法得到的结果出现明显差异,差异的原因在于CFD方法考虑了海流沿叶轮半径方向的径向流动,而BEM方法未考虑此因素。两种方法的比较研究为水平轴海流能发电机组水动力载荷的后续试验研究提供了理论依据。