加拿大地域间收入差异与国家财政补贴     

王鹏飞  Robert BAO  Catherine WONG 《地理研究》2011,30(7):1309-1318

运用基尼系数、变动系数、加重变动系数及锡尔系数对加拿大地域间收入差距变化进行实证分析后得出,自1950年代至1960年代加拿大地域差异的缩小比较缓慢,到了1970年代中期地域差异呈现出急剧缩小的倾向,随后地域差异缩小开始停滞,而进入1980年代后期地域差异又有扩大的倾向。同时加拿大政府的财政补贴对地域差异带来了很大的影...  相似文献   

Long-Term Trends in Extreme Temperatures in Hong Kong and Southern China     

T. C. LEE  H. S. CHAN  E. W. L. GINN  M. C. WONG 《大气科学进展》2011,28(1):147-157

The observed long-term trends in extreme temperatures in Hong Kong were studied based on the meteorological data recorded at the Hong Kong Observatory Headquarters from 1885-2008. Results show that, over the past 124 years, the extreme daily minimum and maximum temperatures, as well as the length of the warm spell in Hong Kong, exhibit statistically significant long-term rising trends, while the length of the cold spell shows a statistically significant decreasing trend. The time-dependent return period analysis also indicated that the return period for daily minimum temperature at 4°C or lower lengthened considerably from 6 years in 1900 to over 150 years in 2000, while the return periods for daily maximum temperature reaching 35°C or above shortened drastically from 32 years in 1900 to 4.5 years in 2000. Past trends in extreme temperatures from selected weather stations in southern China from 1951-2004 were also assessed. Over 70% of the stations studied yielded a statistically significant rising trend in extreme daily minimum temperature, while the trend for extreme maximum temperatures was found to vary, with no significant trend established for the majority of stations.  相似文献   

USERS′ PERCEPTION OF KOWLOON PARK, HONG KONG:VISITING PATTERNS AND SCENIC ASPECTS     

WONG Koon-kwai  Manfred DOMROES 《中国地理科学(英文版)》2004,(3)

1INTRODUCTIONThe importance of urban park in a sustainable urban e-cosystem is an aspect that, until now, has been well under-researched (BREUSTE etal., 1998). Public de-mand to improve urban environmental quality, howev-er, has risen. How to improve the livability of com-pacted and congested cities like Hong Kong, has be-come the focus of debate for scientists and poli-cy-makers. The study of the complex relationship of human-environment in urban areas, such as the behav-iors of park …  相似文献   

温、湿控制生土三轴试验装置的研制与应用     

徐龙飞  翁效林  WONG Henry  FABBRI Antonin  朱谭谭 《岩土力学》2022,43(8):2327-2336

为研究温度和湿度对生土力学特性的影响,自主研发了温、湿控制生土三轴试验装置。基于常规三轴压力室,借助电涡流非接触位移传感器搭建高精度变形测试系统,实现环境变化下生土应变的连续性捕捉。针对法国里昂地区生土材料,开展不同湿度、围压和温度作用下生土三轴循环加载-卸载试验,实测生土在不同工况下的三轴剪切破坏强度、应力-应变曲线及体积变化,通过分析滞回曲线,研究弹性模量和残余应变随应力水平的演化特征;同时进行了变湿度条件下生土气态水迁移效应试验。结果表明：该装置能够稳定控制生土环境变化条件,模拟再现生土单元体实际服役工况,精确测量试验过程中生土力学指标及湿度、温度与压力等环境指标,初步检验了装置性能的可靠性和准确性。相关成果可为荷载-湿-热耦合作用下非饱和生土变形机制的研究与本构模型的建立提供技术支撑。  相似文献   

珠江河口氮和磷循环及溶解氧的数值模拟 Ⅱ.模拟结果   总被引：4，自引：3，他引：4       下载免费PDF全文

管卫兵  王丽娅  许东峰 《海洋学报》2003,25(1):61-68

将生态型水质模式应用于珠江口模拟研究,模式结果较好地再现了珠江口丰水期营养物质和溶解氧的水平及垂直分布趋势,说明模式已抓住了珠江河口的动力和生化变化的关键过程.进一步的研究表明,丰水期珠江河口计算区域氮处于富裕状态,磷和光照控制着浮游植物的生长.  相似文献   

RELEASE OF HEAVY METALS FROM HARBOUR''S SEDIMENT TO SEAWATER: A LABORATORY STUDY     

李锦霞  W. K. JOHNSONAND  C. S. WONG 《海洋学报(英文版)》1987,6(3):373-379

The release and removal behaviour of Cd, Cu, Co, Ni, Pb and Zn from the sediment of Xiamen Harbour to sea water have been studied under ultra-clean laboratory condition within 168 b. Initial rapid increases in dissolved Cu, Pb, Zn and Co were observed in the first six hours and twelve hours respectively after addition of various amounts of sediment. Then Pb and Co decreased to background values, while Zn decreased to less than the background value and Cu remained unchanged. Cd and Ni did not increase during the experiment. The results indicated that the weakly bound heavy metals were released from the sediment through desorption or exchange. Simultaneously, they might form complexes or be adsorbed in colloids or particles. The two processes existed simultaneously, changing with time and conditions.  相似文献   

L''INFLUENCE SEISMOGENIQUE DE CERTAINES STRUCTURES GEOLOGIQUES EN CHINE.     

PAR WONG WEN-HAO 《地质学报》1923,2(2)

Ⅰ. LES MATERIAUX ET LA METHODE D'ETUDE. LES TREMBLEMENTS DE TERRE EN CHINE. Le comte de Montessus de Ballore a fait, dans sa geographie seismolo-gique, les plus expresses reserves sur la seismicite de la Chine. Il croit  相似文献   

V.K.Ting Biographical Note     

WONG WEN-HAO 《地质学报》1937,(Z1)

V. K. Ting was born in 1887 at Huangchiao village, Tai-hsing district, Kiangsu province. His intelligence was early noticed ashe has received excellent marks at the first graduate examination at theage of thirteen years. In the examination paper he wrote eloquently on theaccomplishment of Han Wu-ti in developing the south-western area of  相似文献   

RICHTHOFEN AND GEOLOGICAL WORK IN CHINA     

翁文灏 《地质学报》1933,(1)

Geology of China is being built upon the solid foundation laid downby Ferdinand von Richthofen.It is therefore with pleasure that we avail our-selves of this opportunity——on the occasion of his Centenary Anniversary——torecord here the profound feeling of  相似文献   

广东地区地震动衰减和场地响应的研究   总被引：55，自引：9，他引：55       下载免费PDF全文

黄玉龙  郑斯华  刘杰  赵兴权  康英 《地球物理学报》2003,46(1):54-61

根据广东数字地震台网14个地震台的249条波形资料，研究了广东地区的衰减模型和各台站的场地响应. 采用三段几何衰减模型拟合，得到了广东地区的几何衰减函数. 同时也采用线性几何衰减模型和两段几何衰减模型对观测数据进行了拟合. 残差比较表明，线性几何衰减模型的残差最大，两段几何衰减模型的残差其次，而三段几何衰减模型的残差最小. 由此可以推论广东地区采用三段几何衰减模型具合理性和适用性. 得到广东地区非弹性衰减Q值随频率f的关系为Q(f)=481.5·f0.31；14个台站的场地响应均没有显示出明显的放大效应，这与它们均处于岩石地基相符.  相似文献