维普中文期刊产品整合服务
15篇 您的检索式:作者名="Alice Cheng"
    题名 作者 年代 出处 被引量
1ISAR成像快速最小熵相位补偿方法显示文摘针对逆合成孔径雷达(ISAR)成像,该文提出一种快速运动补偿算法,该算法基于二维图像熵,并通过相位补偿的快速迭代,使图像熵逐渐达到最小,从而实现雷达像的自聚焦.实测数据处理结果表明,同现有方法相比,该方法不仅保证熵意义上的最佳聚焦效果,而且还具有较高收敛速度。邱晓晖 Heng Wang Cheng Alice Yeo Siew Yam 2004电子与信息学报2004,26,10:11
2ISAR成像最小熵自聚焦与相位补偿的一致性分析显示文摘该文对ISAR成像的最小熵自聚焦(Minimum Entropy Auto-focusing,MEA)与相位补偿之间的一致性问题进行深入研究,文中的数学推导证明了对于ISAR距离-多普勒成像,相位补偿后的剩余相位误差为0时的相位补偿量不一定是ISAR图像熵函数的极小点,这与ISAR成像目标有关。仿真实验也表明使ISAR图像熵最小时的相位补偿剩余相位误差却未必为0,只有当目标本身的图像熵不大于任何非零剩余相位误差所对应的成像结果的熵时,ISAR成像的最小熵自聚焦才与相位补偿一致。邱晓晖 赵阳 Alice Heng Wang CHENG Siew-Yam Yeo 2007电子与信息学报2007,29,8:5
3Physical Activity and Sedentary Behaviors among Chinese Children: Recent Trends and Correlates显示文摘Objective This study was aimed at examining the trends and correlates of physical activity(PA)and sedentary behaviors among Chinese children.Methods A total of 4,341 subjects(6,936 observations)aged 6–17 years who participated in the China Health and Nutrition Survey(2004–2015)were included.Of the subjects,41%participated in the survey twice or more.Random-effects ordinal regression models and repeated-measures mixed-effects models were used to examine the PA trends.Quantile regression models were applied to examine the factors influencing PA and sedentary behaviors.Results From 2004 to 2015,the prevalence of physical inactivity among Chinese children aged 6–17 years increased by 5.5%[odds ratio(OR),1.51;95%confidence interval(CI),1.19–1.90;P<0.001].The PA volume declined by 5.8 metabolic equivalent of task-hr/week(P<0.001),and the time spent in sedentary behaviors increased by 1.8 hr/week(P<0.001).Age,ethnicity,and region showed significant effects on the PA volume across the quartiles(P<0.001).Across the quartiles,sedentary time was significantly higher in the children residing in urban areas(P<0.001)or areas with high urbanization levels(P≤0.005)than in their counterparts.Conclusions A declining PA trend among Chinese children aged 6–17 years was observed from 2004 to2015,and certain subgroups and geographical areas are at higher risk of physical inactivity.YANG Xi LEUNG Alice Waiyi JAGO Russell YU Shi Cheng ZHAO Wen Hua 2021Biomedical and Environmental Sciences2021,34,6:3
4Evening exercise is associated with lower odds of visual field progression in Chinese patients with primary open angle glaucoma显示文摘Background:Exercise is widely known to lower intraocular pressure and increase ocular blood flow,which may be beneficial for glaucoma management.However,there are few studies that have reported on the relationship between exercise and glaucoma progression.The aim of our study was to investigate the exercise habits of those with primary open angle glaucoma(POAG)and its association with the progression of visual field(VF)loss.Methods:Daily physical activity(PA)was monitored by an accelerometer(ActiGraph wGT3x-BT)which patients wore for more than 10 h of being awake on their right wrists for 1 week.Results:Seventy-one non-progressive and 27 progressive patients were enrolled in the study.24-h moderate to vigorous physical activity(MVPA)exercise showed that POAG patients had similar variation trends consisting of 3 wave peaks and 2 wave hollows.Minutes spent in MVPA was 19.89±15.81 and 21.62±15.10 during 07:00–09:00 h(p=0.204),15.40±14.49 and 15.67±12.43 during 15:00–17:00 h(p=0.822)and 17.26±21.11 and 11.42±11.58 during 18:00–20:00 h(p=0.001)in the non-progressive and progressive group,respectively.Univariate analysis indicated that 10 min of MVPA(18:00–20:00 h)[odds ratio,OR(95%CI)=0.82(0.73,0.92)],average mean arterial pressure[OR(95%CI)=0.96(0.94,0.98)],age[OR(95%CI)=1.06(1.03,1.08)],male[OR(95%CI)=0.67(0.48,0.96)],spherical equivalent[OR(95%CI)=1.14(1.07,1.22)]and IOP-lowering medications[OR(95%CI)=1.54(1.16,2.05)]were significantly correlated with having progressive VF damage.Multivariable analysis showed that 10 min of MVPA(18:00–20:00 h)[OR(95%CI)=0.85(0.75,0.97)]was associated with progressive VF loss even after adjusting for other risk factors.Conclusions:Evening exercise may lower the odds of VF progression,suggesting that exercise habits possibly play an important role in glaucoma progression.Xiafei Pan Kai Xu Xin Wang Guofu Chen Huanhuan Cheng Alice Jia Liu Laurence Tang Hou Lin Zhong Jie Chen Yuanbo Liang 2020Eye and Vision2020,7,1:2
5Oral antihyperglycemic ther- apy for type 2 diabetes mellitus 显示文摘Alice YY Cheng I George F 2005CMAJ2005,172,2:1
6A Controlled Trial of a Nurse Follow-up Dietary Intervention on Maintaining a Heart-Healthy Dietary Pattern Among Patients After Myocardial Infarction显示文摘Vincent K. F. Mok Janet W. H. Sit Alice S. M. Tsang Sek Ying Chair Tak Lai Cheng Chung-seung Chiang 2013The Journal of Cardiovascular Nursing2013,,3:1
7Targeting multiple pathogenic mechanisms with polyphenols for the treatment of Alzheimer' s disease- experimental approach and therapeutie implications 显示文摘Jun Wang Weina Bi Alice Cheng 2014Frontiers in Aging Neuroseienee2014,6,42:1
8Determinants of capital structure choice:A structure equation modeling approach显示文摘Chang C F Alice C L Cheng F L 2009The Quar-terly Review of Economics and Finance2009,49,:1
9Hydroxychavicol, a betel leaf component, inhibits prostate cancer through ROS-driven DNA damage and apoptosis显示文摘Sushma Reddy Gundala Chunhua Yang Rao Mukkavilli Rutugandha Paranjpe Meera Brahmbhatt Vaishali Pannu Alice Cheng Michelle D. Reid Ritu Aneja 2014Toxicology and Applied Pharmacology2014,,1:1
10Determinants of cap- ital structure choice: a structure equation modeling approach显示文摘Chang C F Alice C L Cheng F L 2009The Quarterly Review of Economics and Finance2009,49,:1
11Implications of recent clinical trials for the National Cholesterol Education Program Adult Treatment Panel III guidelines显示文摘Alice YY Cheng Lawrence A Leiter 2006Current Opinion in Cardiology2006,,4:1
12Implications of recent clinical trials for the National Cholesterol Education Program Adult Treatment Panel III guidelines显示文摘Alice YY Cheng Lawrence A Leiter 2006Current Opinion in Cardiology2006,,4:1
13Efficacy and tolerability of pegylated interferon‐α‐2a in chronic hepatitis B: A multicenter clinical experience显示文摘Dilip Ratnam Anouk Dev Tin Nguyen Vijaya Sundararajan Hugh Harley Wendy Cheng Alice Lee Ferry Rusli Robert Chen Sally Bell Stephen Pianko William Sievert 2012Journal of Gastroenterology and Hepatology2012,,9:1
14美国医院的市场行销行为显示文摘Alices Cheng 方刚 2005中国医院2005,9,7:0
15The blueprint for service transformation at the City University of Hong Kong Library:The project for RFID applications as the starting point显示文摘With the rapid development of information and communication technologies,it is now time for libraries to re-position their service norms.From a traditional service mode that is manual-based,libraries should now become functionally more versatile through the provision of multifaceted services via different channels and modes such as self-services,digital libraries,and value-added services.The Run Run Shaw Library at the City University of Hong Kong,through strategic space planning between campuses,e-resources collection development,space re-organization,staff deployment,and innovative new services,has formulated a blueprint for its service transformation.Radio Frequency Identification(RFID) technology,offering opportunities for the Library to improve its service quality,has become a core element of the blueprint.Two pilot projects focusing on the application of Ultra High Frequency RFID and High Frequency RFID technologies respectively in the library environment have been initiated.To achieve the best results,the Library has taken into consideration different factors,such as time,space,budget,manpower,and organizational structure.Careful coordination of these different factors has generated the greatest synergy.Hsianghoo Steve CHING Alice TAI Mengxin CAI Michael CHENG 2009Journal of Library Science in China2009,,1:0
返回顶部 每页显示:
共1页 首页 上一页 第1页 下一页 末页 /1 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费