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ROBUST FACE DETECTION AND ANALYSIS

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Journal of Electronics(China) 2000年第3期17卷 193-201页

作者： Zhuang Zhenquan Cheng Yimin Sun Qibin Wang Yixiao(department of Electronic Engineering, university of Science & Technology of China, Hefei 230026) (Institute of System Science, national university of singapore)

This paper presents a method which utilizes color, local symmetry and geometry information of human face based on various models. The algorithm first detects most likely face regions or ROIs (Region-Of-Interest) from the image using face color model and face outline model, produces a face color similarity map. Then it performs local symmetry detection within these ROIs to obtain a local symmetry similarity map. The two maps and local similarity map are fused to obtain potential facial feature points. Finally similarity matching is performed to identify faces between the fusion map and face geometry model under affine transformation. The output results are the detected faces with confidence values. The experimental results demonstrate its validity and robustness to identify faces under certain variations.

关键词： Face detection and analysis Similarity matching Fusion Local symmetry Color segmentation

Impact on the Yangtze (Changjiang) Estuary from its drainage basin: Sediment load and discharge

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Chinese Science Bulletin 2001年第S1期46卷 73-80页

作者： CHEN Zhongyuan & ZHAO YiwenState Key Laboratory for Estuarine and Coastal Research, East China Normal university, Shanghai 200062, China department of geography, East China Normal university, Shanghai 200062, China 1. State Key Laboratory for Estuarine and Coastal Research East China Normal University 200062 Shanghai China 2. department of geography East China Normal University 200062 Shanghai China

This paper focuses on the sediment transport and freshwater discharging from upper Yangtze drainage basin downstream, primarily on the basis of multiyear hy-drological data collected from three major hydrological gauge stations (Yichang, Hankou and Datong). Data indicate highest sediment load in Yichang (5.6×108 t/a), lowest in Hankou (5.1×108t) and second highest in Datong (5.4×108 t). This fluctuations are identical with what has been observed from the annual flood season. About one thirds of the sediment load are trapped in the middle Yangtze River course, where meandering river pattern prevails; rest of them are directly transported to the river mouth area via lower Yangtze River channel, where the river is typically confined by the exposed base rock and almost none is being trapped, instead, minor being drained to the mainstream from the local tributaries. To recognize this sediment delivery and river flow media is vital, because it can highlight morphologic/topographic correlation between the

关键词： sediment load discharge estuarine impact the Yangtze River.

The survey of touristry information system

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Journal of Geographical Sciences 1999年第1期9卷 77-82页

作者： MAO Zheng-yuan(department of geography, Central China Normal university, Wuhan 430079, China)

In this paper, the writer briefly introduces the concept of touristry information system (TIS), its current research situation, its necessity and urgency of development, analyses the structure, function and technical ... 详细信息

关键词： tourism Touristry Information System (TIS) touristry consumption touristry management touristry administration multi-medium network

Climate change tendency and grassland vegetation response during the growth season in Three-River Source Region

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Science China Earth Sciences 2010年第10期53卷 1506-1512页

作者： QIAN Shuan1,FU Yang2 & PAN FeiFei3 1 national Meteorological Center,Beijing 100081,China 2 Qinghai Meteorological Research Institute,Xining 810001,China 3 department of geography,university of North Texas,Denton,TX 76203,USA 1. national Meteorological Center Beijing 100081 China2. Qinghai Meteorological Research Institute Xining 810001 China3. Department of Geography University of North Texas Denton TX 76203 USA

Climate change,climate suitablity change for grassland vegetation,and grassland response to climate change during the growth season are studied systematically by using meteorological data of temperature,precipitation,and length of sunlight from 1961 to 2007,NOAA/AVHRR NDVI from 1982 to 2006,and observations of grass height,biomass,and coverage in enclosed grassland from 1994 to *** models are developed to evaluate climate change and the climatic suitability of grassland vegetation *** temperature,accumulative precipitation,and length of sunlight during the growth season increased from 1961 to 2007 at rates of 0.24°C/10 yr,2.32 mm/10 yr,and 2.81 h/10 yr,*** increase rates of ave-rage temperature between April and May,and between June and August are 0.17 and 0.30°C/10 yr;accumulative rainfall between April and May increased at a rate of 2.80 mm/10 yr,and accumulative rainfall between June and August decreased at a rate of 0.38 mm/10 yr;the increase rates of accumulative length of sunlight between April and May,and between June and August are 2.15 and 1.2 h/10 *** climatic suitability of grassland vegetation growth showed an increasing trend,and the increase rate between April and May is greater than that between June and *** NDVI observations from 1982 to 2006 and measurements of grass height,dry biomass,and coverage from 1994 to 2006 show that the climate change has resulted in an increase in plant productivity of the grassland in Three-River Source *** some protection measures are taken as soon as possible,the deteriorated grassland in Three-River Source Region can recover.

关键词： climate change climate suitability change grassland vegetation Three-River Source Region

Chemical weathering inferred from riverine water chemistry in the lower Xijiang basin,South China

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Chemical weathering inferred from riverine water chemistry i...

LAND USE STRATEGIES IN SPECIAL ECONOMIC ZONES OF CHINA:THE CASE STUDY OF HAINAN PROVINCE

中国科学院地质与地球物理研究所第十届(2010年度)学术年会

作者： Huiguo Sun~(a,b,*),Jingtai Han~a,Dong Li~a,Shurong Zhang~b,Xixi Lu~b a Key Laboratory of Cenozoic Geology and Environment,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,PR China b department of geography,national university of singapore,singapore

Seasonal sampling was conducted on 13 sites involving the lower stem of the Xijiang river and its three tributaries to determine the spatial patterns of the riverine water chemistry and to quantify the chemical weathering rates of carbonate and silicate of the *** indicate that the major ions in the Xijiang river system are dominated by Ca and HCO with a higher concentration of total dissolved solids, characteristic of the drainages developed on typical carbonate *** spatial variations of major ion concentrations are found at various spatial scales,which are dominantly controlled by the lithology particularly carbonate distribution in the *** four selected rivers show similar seasonal variations in major ions,with lower concentrations during the rainy *** is the first important factor for controlling the weathering rate in the basin,although increasing temperature and duration of water-rock interaction could make positive contributions to the enhancement of chemical *** chemical weathering rates range from 52.6 to 73.7 t/km/yr within the lower Xijiang basin and carbonate weathering is over one order of magnitude higher than that of *** consumption rate by rock weathering is 2.0×10 mol/yr,of which more than 60%is contributed by carbonate *** flux of CO released to the atmosphere-ocean system by sulfuric acid-induced carbonate weathering is 1.1×10 mol/km/yr, comparable with the CO flux consumed by silicate weathering.

关键词： Water geochemistry Carbonate weathering Silicate weathering CO2 consumption Lower Xijiang basin

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Journal of Geographical Sciences 1995年第2期5卷 13-20页

作者： Cai Yunlong(department of geography, Peking university, Beijing 100871People’s Republic of China)

Special economic zones are important bridges between Chinaand intemational market. Their economic structure is being transformed andnew land use strategies should be taken correspondingly. HainanProvince, as the biggest special economic zone, has great superiorities andpotentialities for the development of land use. In order to realize the goal,the present land use decision should be mainly guided by market, moreattention should be paid to tropical agriculture and aquatic productindustry, the principle of sustainable development should be strengthened,and the area of farmland for grain production should be stabilized.

关键词： land use situation and strategy special economic zone China,Hainan Province

The giant magnetocaloric effect in Gd5Si2Ge2 with low purity gadolinium

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Science Bulletin 2005年第16期 141-144页

作者： ZHANG Tiebang1, CHEN Yungui1, FU Hao1, TENG Baohua2, TANG Yongbai1 & TU Mingjing1 1. School of Materials Science and Engineering, Sichuan university, Chengdu 610065, China 2. department of Physics, national university of singapore, singapore 117542, Republic of singapore

The giant magnetocaloric effect Gd5Si2Ge2 alloy was prepared with 99wt% low purity commercial Gd. Pow-der XRD and magnetic measurements showed that the Gd5Si2Ge2 alloy annealed at 1200℃ for 1 h had a significant magnetic- crystallographic first order phase transition at about 270 K. The maximal magnetic entropy change is 17.55 J·kg?1·K?1 under a magnetic field change of 0―5 T. The distinct increase of magnetic entropy change belongs to the first-order phase transition from the orthorhombic Gd5Si4-type to the monoclinic Gd5Si2Ge2-type after high temperature heat-treatment.

关键词： magnetic refrigerant Gd5Si2Ge2 magnetocaloric effect.

Administrative reforms and the impacts on rural-urban relations in China

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Journal of Geographical Sciences 1998年第3期8卷 49-56页

作者： Mark Yaolin Wang department of geography and Environmental Studies The university of Melbourne Parkville, Victoria 3052, AUSTRALIA

New and distinctive regions of economic interaction and growth, known as Extended Metropolitan Regions (EMRs), are emerging in China. This paper will examine the role of the various levels of the Chinese governments and their administrative reforms in the development of one of the urbanising regions in China: the Shenyang Dalian EMR, Liaoning Province. It is primarily concerned with to what extent EMR's spatial growth pattern is influenced by governmental policies and how the changes in administrative boundaries have impacted rural urban relations.

关键词： rural urban relation reform industry Shenyang Dalian EMR policy administrative aspect.

IMPACT OF CLIMATE ON SUMMER RESIDENTIAL ELECTRICITY CONSUMPTION IN HONG KONG

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Journal of Geographical Sciences 1997年第4期7卷 44-50页

作者： Yuk Yee Yan department of geography Hong Kong Baptist university Kowloon Tong, Hong Kong

The influence of climatic variables and cooling degree days (CDD) on summer residential electricity consumption for the period 1980 through 1994 in Hong Kong was investigated. The association between Clo, a measure of amount of Clothing insulation to maintain comfort, and residential electricity consumption was also examined. Utilizing monthly data and multiple regression analyses, it is discovered vapor pressure was not significantly related to electricity consumption while Cloud cover was negatively associated with electricity use. Climatic variables, CDD and Clo provided highly comparable results in modeling summer residential electricity consumption. Mean temperature and Cloud gave the best result. Clo yielded a slightly higher R2 value (0.867) than that of CDD (0.865) in the models. These results indicated that Clo could replace the weather variables and CDD to model electricity consumption.

关键词： cooling degree days Clo residential electricity consumption.