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联系n维单形中线、中面面积的Finsler-Haduiger不等式的对偶式
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作者 王卫东 《湖北民族学院学报(自然科学版)》 CAS 2001年第2期34-36,共3页
利用一个代数不等式 ,得到了与En 中n维单形的中线、中面面积有关的Finsler
关键词 线 中面面积 Finsler-Haduiger不等式 对偶式 N维单形 正则单形
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n维单形中一个(n-1)重向量恒等式及其应用 被引量:1
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作者 王卫东 《西南师范大学学报(自然科学版)》 CAS CSCD 北大核心 2003年第4期513-517,共5页
证明了En中n维单形的一个(n1)重向量恒等式,并应用它得到了n维单形的中面面积公式,进而给出了n维单形的中面面积与二面角平分面面积之间的一个不等式.
关键词 N维单形 (n-1)重向量 恒等式 中面面积 角平分面积 不等式 欧氏空间
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Establishment of Rural Housing Land Standard in China 被引量:6
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作者 SONG Wei CHEN Baiming +1 位作者 ZHANG Ying WU Jianzhai 《Chinese Geographical Science》 SCIE CSCD 2012年第4期483-495,共13页
On the basis of rural household survey in 12 provinces of China in 2005,this research built an econometrical model to find the area standard for rural housing land.This standard is expected to facilitate rural housing... On the basis of rural household survey in 12 provinces of China in 2005,this research built an econometrical model to find the area standard for rural housing land.This standard is expected to facilitate rural housing land administration,efficient and intensive housing land use and policy making.This research concludes:1) according to the household survey data,the average area for rural housing land in China is about 235.26 m 2,and the rural housing land mainly includes unused land(42.89%) and house construction land(37.76%) with the average floor-area ratio of 0.42;2) the indexes in the standard concern the factors such as location,landform,house form,household population and cultivated land area per farmer,which all have significant effects on rural housing land use;3) the reasonable area for rural housing land may be 150 m 2 in average before 2020,and the referential standards in different provinces are 120 m 2,130 m 2,140m 2,150 m 2,160 m 2,170 m 2,190 m 2,200 m 2,210 m 2,220 m 2,230 m 2 and 250 m 2 respectively;and 4) if there are less than two persons or more than five persons in a family,these standards need to be decreased or increased by 7%.When the cultivated land area per farmer is lower than the provincial average,the standards have to reduce by 3.5%. 展开更多
关键词 rural housing land area standard rural household survey China
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