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Search Results: 1 - 10 of 186400 matches for " 姜宝LI Jian "
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物流产业集聚对区域经济增长影响研究――基于省际数据的空间计量分析
Agglomeration of logistics industry and regional economic growth in China: Spatial econometric analysis on provincial panel data

李剑,
LI Jian
, JIANG Bao

- , 2016, DOI: 1672-3104(2016)04-0103-08
Abstract: 摘 要: 选取2004―2013年中国内地31个省际数据为样本,运用空间计量模型实证分析物流产业集聚对区域经济增长的影响。研究发现,整体来看,物流产业集聚能够有效地促进区域经济增长速度和区域经济增长效率的提高;从产业经济层面分析,发现物流产业集聚对第三产业的贡献度最大,对第一产业的影响不显著;从对外贸易角度来看,物流产业集聚仅对当地进口贸易有显著正影响,但其集聚的空间溢出效应却是负的。
Abstract: Agglomeration of logistics industry makes great contributions to regional economic development, and the impact has been too big to be ignored. The present study employs the spatial econometric model to process the original data from 2004 to 2013 of 31 provinces to find out how agglomeration of logistics industry affects regional economic growth. From the overall level of regional economy, the agglomeration can effectively promote the regional economic growth and improve its efficiency. From the analysis of industry economy, the agglomeration of logistics industry makes the greatest contribution to the third industry but exerts no significant influence on the first industry. From the view of foreign trade, the logistics industry cluster only has a significant positive impact on regional import trade, but the spatial effect of logistics industry agglomeration could suppress import and export trade in the surrounding area
Effect of magnetic field on the transport properties of heavy electron compounds CeCu6-x6-xCdxx
磁场对重电子金属材料CeCu6-xCdx电阻的影响

Jiang Li-Xi,Meng Ji-Bao,Chen Zhao-Jia,Luo Jian-Lin,
黎霞
,孟继,陈兆甲,雒建林

物理学报 , 2005,
Abstract: 介绍了重电子金属CeCu6-x6-xCdxx(x=010,015,020,0 30,050)在18—300K温度范围内,在磁场(μ00H=0,5,10T)下电阻 随温度的变化规律 及低温(19 ,15K)下的磁电阻(μ00H=0—10T).实验表明所有样品在 零场下的Tmaxmax(对应于电阻极大值的温度)都低于18K.加磁场后,Tmax max随磁场和掺杂量
Spatial variability of soil erodibility (K-Factor) at a catchment scale in China
基于小流域尺度的土壤可蚀性K值空间变异

ZHANG Jin-Chi,LI Hai-Dong,LIN Jie,LI Yi-Jian,JIANG Jiang,TAO Bao-Xian,ZHANG Dong-Hai,
张金池
,李海东,林杰,李奕建, ,,张东海

生态学报 , 2008,
Abstract: 采用传统统计学和地统计学相结合的方法,以邓下小流域为研究区,利用EPIC模型中土壤可蚀性K值算法,研究了小流域尺度下土壤可蚀性K值空间变异特征及不同植被类型对其影响.结果表明:(1)研究区K值的变化范围为0.1498 ~0.4981,均值为0.3316,变异系数为22.11%,小流域土壤可蚀性存在中等程度的空间变异性.(2) 研究区土壤可蚀性K值总体分布趋势是从西北向东南增大,条带状分布明显,K值较高处以"岛状"嵌于小流域中南部.北部森林覆盖区土壤抗侵蚀能力较强,中南部耕作种植及居住生活区土壤抵抗侵蚀能力较弱.(3)研究区8种不同植被类型除旱耕地外,K值垂直变异特征均是K0~20cm<K20~40cm<K40~60cm,土壤可蚀性随土壤垂直剖面深度增大而增大,土壤表层(0~20cm)抗侵蚀性能力最强.8种不同植被类型土壤表层K值(K0~20cm)的大小顺序为:休闲地 >茶园 >旱耕地 >草地 >阔叶林 >灌木林 >针叶林 >毛竹林.
Genetic linkage map of Betula pendula Roth and Betula platyphylla Suk based on random amplified polymorphisms DNA markers
白桦RAPD遗传连锁图谱的构建

JIANG Ting-Bo,LI Shao-Chen,GAO Fu-Ling,DING Bao-Jian,QU Yue-Jun,TANG Xin-Hua,LIU Gui-Feng,JIANG Jing,YANG Chuan-Ping,
廷波
,李绍臣,高福铃,,曲跃军,唐鑫华,刘桂丰,,杨传平

遗传 , 2007,
Abstract: Based on the genetic inheritance and segregation of random amplified polymorphism DNA (RAPDs) markers, the first middensity linkage map for silver birch was constructed by using a pseudotestcross mapping strategy. A segregat- ing population including 80 progenies from the cross between Betula pendula Roth and B. platyphylla Suk was obtained. A set of 1,200 random oligonucleotide primers were screened, and 208 primers were selected to generate RAPD markers within a sample of 80 F1 progenies. A total of 364 segregating sites were identified. Among them, 307 belonged to 1 : 1 segregating site, and 36 belonged to 3 : 1 segregating site, others were found distorted from the normal 1 : 1 ratio. Alto- gether 307 sites segregating 1 : 1 (testcross configuration) were used to construct parent-specific linkage maps, 145 for B. pendula and 162 for B. platyphylla. The resulting linkage maps consisted of 145 marker sites in 14 groups (four or more sites per group), 6 triples and 6 pairs for B. pendula, which covered the map distance about 955.6 cM (Kosambi units). The average map distance between adjacent markers was 14.9 cM, and 162 linked marker site for B. platyphylla were mapped onto 15 groups (four or more sites per group), 4 triples and 6 pairs, which covered the map distance about 1,545.8 cM, and the average map distance between adjacent markers was 15.2 cM. Further study is warranted to intergrate the two maps toone density map and to locate important genes on the maps.
Exploration and Practice of Production Practice in Bioengineering of Yantai University
烟台大学生物工程专业生产实习教学改革的探索和实践

JIANG Ai-Li,LIN Jian,YU Zhen,JU Bao,SHAN Shou-Shui,CHANG Xiu-Lian,CUI Long-Bo,
爱莉
,林剑,于贞,,单守水,常秀莲,崔龙波

微生物学通报 , 2010,
Abstract: 生产实习是生物工程专业实践教学的重要组成部分, 目前生产实习中存在着企业难寻、经费不足及学生动手操作机会少等问题。对本专业的生产实习进行改革, 通过计算机仿真、工厂实习和校内实习工厂建设等有效途径, 强化了实习效果, 切实提高了烟台大学生物工程专业学生工程实践能力和综合素质。
Low-temperature specific heat and resistance for the heavy-electron metals CeCu6-xMx (M=Ni,Zn)
Low-temperature specific heat and resistance for the heavy-electron metals CeCu6-xMx (M=Ni,Zn)

Jiang Li-Xi,Meng Ji-Bao,Xia Zhao-Yang,Chen Zhao-Ji,Luo Jian-Lin,Wang Nan-Lin,
黎霞
,孟继,夏兆阳,陈兆甲,雒建林,王楠林

中国物理 B , 2004,
Abstract: The specific heat and resistance of CeCu_{6-x}M_x (M=Ni,Zn) have been studied in the concentration range where they still retain the orthorhombic structure. The coefficient c of -ln T term in resistance R=R_0+bT-cln T, as well as the γ, have been found to vary in opposite directions with increasing x for Ni and Zn substitutions. The physical mechanism is discussed.
镁电解多极槽技术在海绵钛生产中的应用与分析
Application and Analysis of Multipolar Magnesium Cell Technology in Titanium Sponge Production
 [PDF]


Metallurgical Engineering (MEng) , 2015, DOI: 10.12677/MEng.2015.23020
Abstract:
本文以几种镁电解槽技术在海绵钛生产企业的实际应用情况为依据,结合每种槽型技术的设计指标进行了详细的对比和分析,着重阐述了多极槽技术原理及其先进性,总结归纳了多极槽取得良好经济技术指标的主要影响因素,为我国今后镁电解技术的选择明确了方向。
Based on the practical application of several magnesium reduction cell technologies introduced by the titanium sponge enterprises in China, the paper carried on detailed comparative analysis of these technologies according to the design index of each magnesium reduction cell technology. The main influencing factors of obtaining good economic and technical indexes of the multipolar magnesium cell were summarized, and the advancement of multi-electrode magnesium reduction cell technology was expounded, stating the direction of magnesium electrolysis technology in China.
Sound-based Collaborative Direction Estimation for Swarm Robotic Systems
面向群智能机器人系统的声音协作定向

JIANG Jian,ZHAO Jie,LI Li-Kun,
,赵杰,李力坤

自动化学报 , 2007,
Abstract: A collaborative direction estimation method based on single frequency sound is proposed for swarm-based robotic systems.A sense array of microphones based on interaurla intensity difference(IDD)is designed.According to the characteristics of sound intensity signals of the sense array,the relationship between sound intensity signals of sensors and sound source direction is deduced with fuzzy inference system(FIS).Experimental results show that this direction estimation method can meet the requirements of direction estimation of swarm-based robotic systems.
Two Approaches of Detecting Weak Moving Target with Constant Acceleration in Sea Clutter
两种海杂波背景下的微弱匀加速运动目标检测方法

Guan Jian,Li Bao,Liu Jia-neng,Zhang Jian,
关键
,,刘加能,张建

电子与信息学报 , 2009,
Abstract: In this paper, the characteristic of FRFT modules about LFM signal and monochromatic signal is researched. Based on this characteristic, two new methods based on difference of FRFT modules for moving target detection are proposed. One is based on difference of FRFT modules of echo signal and its time-lapse signal. The other is based on difference of FRFT modules with two symmetry inverse rotation angles of echo signal, and one of the FRFT modules has been overturned. In these methods, sea clutter is suppressed effectively. SCR can be improved to some extent, and the detection performance is good in low SCR. Finally, simulation results show the effectivity of proposed methods.
A Model Analysis on Decision-making of Labor Migration
关于劳动力迁移决策的模型分析

LI Ke-qiang,LIN Jian,JIANG Lu,
李克强
,林建,

系统工程理论与实践 , 2004,
Abstract: Chiswick'model is extended,and it is used to analyze the decision-making of labor migration between origin and destination. Then we provide the policy issues on the phenomena of labor outmigration in west areas.
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