首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 687 毫秒
1.
MOTIVATION OF CHINESE INVESTMENT IN VIETNAM   总被引:1,自引:0,他引:1  
1INTRODUCTIONIn January 2003, the London Based Financial Times re- ported that China attracted a record of US$52.7×109 in foreign direct investment (FDI) in the year 2002, sur- passing the United States to become the world's largest FDIrecipient. From zero in 1978 to over US$52×109 in 2002, the compound rate of growth of FDI in China has been nearly 40% per year. This growth helped China achieve a remarkably high average growth rate of GDP of nearly 10% per annum from 1978 to …  相似文献   

2.
1INTRODUCTIONAfter2decades'opendoorpractice,Chinahasnotonlybeenabigplayerasanimportanthostnationtoforeigndirectinvestment(FDI),butalsothelargestFDIhomenationamongthedevelopingcountries(SUN,1998;ZHANG,1995;WorldInvestmentReport,1998).Infact,sincethelate1980s,theChinesegovernmenthasnotsimplyputitseffortintoexportingmade-in-China"productstoearnforeigncurrencyorintoencouragingforeigninwardcapital.Ithasactivelyencourageditsmanufacturerstoinvestoverseas,andhasdeliberatelyandstrategical…  相似文献   

3.
1INTRODUCTIONIn1995,theamountofFDIinChina(mainland)wasUS$37.81bilionthatwasfrommorethan170countriesandregions.Thenearregions...  相似文献   

4.
Since China’s reform and open-door, the countries and regions of direct investment in China’s mainland have been increasing. In 1995, the amount of foreign direct investment (FDI) in China was US$ 37.81 billion that was from more than 170 countries and regions. The regional structure of capital market of FDI in China has three characteristics: (1) The most of FDI was from the near countries or regions, Hong Kong-Macao, Taiwan, Japan, South Korea, Thailand and Malaysia provided 80.3% of the amount of FDI in 1995. (2) Only several countries and regions provided most of FDI in China. (3) According to the contributory rate, the main capital market of FDI in China could be divided into four classes, including the guiding market, subsidiary market, new and development market, opportunity market. Most of FDI in China was from the developing countries and regions, which had a negative effect on the size and technical level of foreign capital enterprises. The author puts forward the countermeasures to improve the regional structure of capital market: (1) to keep the guiding market stable, (2) to open up chiefly the subsidiary market, (3) to guide actively the new and developing market, (4) to try hard to start the opportunity market.  相似文献   

5.
Soil-vegetation-atmosphere radiative transfer model in microwave region   总被引:1,自引:0,他引:1  
The radiative transfer is one of the significant theories that describe the processes of scattering, emission, and absorption of electromagnetic radiant intensity through scattering medium. It is the basis of the study on the quantitative remote sensing. In this paper, the radiative characteristics of soil, vegetation, and atmosphere were described respectively. The numerical solution of radiative transfer was accomplished by Successive Orders of Scattering (SOS). A radiative transfer model for simulating microwave brightness temperature over land surfaces was constructed, designed, and implemented. Analyzing the database generated from soil-vegetation-atmosphere radiative transfer model under Advanced Microwave Scanning Radiometer-Earth Observing System (AMSR-E) configuration showed that the atmospheric effects on microwave brightness temperature should not be neglected, particularly for higher frequency, and can be parameterized. At the same time, the relationship between the emissivities of the different channels was developed. The study results will promote the development of algorithm to retrieve geophysical parameters from microwave remotely sensed data.  相似文献   

6.
1 BACKGROUND OF STUDYChina has begun to take part in the great practice ofinternational competition and opening-up in the last 1 /5 time of 20th century. In the last two decades, Chinahas become one of the areas that have the greatest potential in industrial production, thus it has rankedsecond only to USA in the flow of international capital.By the end of 1998, the real value of FDI China hasutilized has added up to $268. I billion. China has wonworld attention as a huge market for …  相似文献   

7.
Land change science (LCS) strives to understand and model land-use change, which will further advance the understanding of multiple issues in the socio-ecological systems. Based on GIS/RS techniques, autologistic model, and household survey method, this study investigated major land use changes and their causes from 1978 to 2008 in Uxin Banner (county-level), Inner Mongolia in China and then developed an understanding of the relationships between household livelihood and land-use pattern. Results showed that cultivated land increased from 1988 to 2000, and leveled offafter 2000. Built-up land increased stably for the period 1978 2008. The change of grassland and bare land differed among the three periods. From 1978 to 1988, grassland increased by 23.3%, and bare land decreased by 20.48%. From 1988 to 2000, bare land expanded by 1.7%, but grassland declined by 1.3%. From 2000 to 2008, an increase in grassland area by 1.8% was observed, but a decrease in bare land area by 9.0% was witnessed. The autologistic models performed better than logistic models as indicated by lower Akaike Information Criterion (AIC) values. Factors associated with human activities significantly correlated with the change of cultivated land, forest land, grassland, and built-up land. The produce prices and extensive cultivated land use are major issues in the farming area. This study suggests that completing land circulation systems and maintaining the stability of price are effective solutions. By contrast, reclamation and overgrazing are major concerns in the pastoral areas. Implementing environmental policies effectively, transferring population out of rural pastoral areas, and developing modem animal husbandry are effective ways to address these issues.  相似文献   

8.
波谱模拟模型在遥感应用中至关重要,但是传统的波谱模拟模型应用主要是基于单机版的应用,模型模拟的结果不能广泛共享,并且利用波谱数据库的支持也十分有限。试图突破这种局限,以波谱模拟模型在遥感中的应用为主线,参照知识库系统建设的理论,采取B/S的网络结构.充分利用波谱数据库和先验知识库的强大支持,建立分布式波谱模拟模型的应用系统,通过一定的规则和算法自动从波谱数据库和先验知识库中调用数据和知识作为模型的输入参数;对于模拟的结果.可以根据用户意愿决定是否录入波谱数据库,作为知识库系统的知识获取机制,为用户进行遥感应用提供了一个有力的支持平台。  相似文献   

9.
A two-dimensional, depth-integrated model proposed by Lynett and Liu (2002) was checked carefully, and several misprints in the model were corrected after detailed examination on both the theory and the numerical program. Several comparisons were made on wave profile, system energy and maximum wave amplitude. It is noted that the modified model can simulate the propagation of the internal solitary waves over variable bathymetry more reasonably to a certain degree, and the wave profiles obtained based on the modified model can better fit the experiment data reported by Helfrich (1992) than those from original model.  相似文献   

10.
A case study is presented of a regional development model for valley economies in the mountain areas of Beijing, China. The nature and framework of the valley economy model are described and the development of the model, which is specific to the mountain areas of Beijing, is analyzed. Five different valley economy models applied in the Beijing mountain areas are compared. The major purpose of the valley economy model is to develop the regional economy, including the selection of appropriate industries, the allocation of industrial space, the establishment of supply chains and the integration of various industries. Pilot experiments using the valley economy model have been conducted in seven counties(districts) in Beijing: Pinggu, Huairou, Changping, Mentougou, and Fangshan districts, and Yanqing and Miyun counties. Five models for developing the Beijing mountain areas have been explored, including: creative cultural industries, characteristic industry clusters, the promotion of large tourist areas, natural scenic tourism and folk cultural tourism. Each model has its own unique features and potential to help in the regional development of mountain areas.  相似文献   

11.
从政策视角探讨我国地理信息标准化问题   总被引:1,自引:0,他引:1  
分析了发达国家标准化相关政策特点,概括介绍了我国现有标准化法律法规,归纳了我国地理信息标准化的主要成就,并从政策视角侧重分析我国地理信息国家标准、行业标准和标准体系研制3方面存在的问题。认为需要加强对标准化法律法规的实施力度,并研究提出进一步促进我国地理信息产业发展的标准化相关政策建议。  相似文献   

12.
论文分别以分省和分区(东、中、西部)1992~2004年的面板数据,利用我们修正过的De Mello模型和更为稳健的模型检验方法,研究了我国利用外商直接投资对经济增长的影响作用。研究结果发现,利用分省数据的模型证明了FDI对我国经济增长的正向积极作用,这一点与其他研究结果相同,但是利用分区数据的研究表明,虽然我国西部仍然是FDI作用最弱的区域,但是东部与中部比较,GDP增长率变动对FDI增长率变动的敏感性不明显,有别于中部,这在一定程度上可以说明东部地区存在FDI过密和外商投资产业的过度竞争问题。  相似文献   

13.
This paper aims to the debate on the nexus between informal economies and the environment by investigating the long-term dynamic impacts of China's informal economies on pollution and considering regional differences in informal economies' pollution.This paper uses the Multiple Indicators Multiple Causes(MIMIC) model to estimate the size of informal economies and employs econometric models to examine their relationships to pollution based on provincial-level panel data from 2000 to 2017. The results indicate that informal economies' effects on environmental pollution are not purely positive or negative. Rather, our model indicates that there is an inverted U-shaped relationship between informal economies and pollution in the long run in China; this means that the level of environmental pollution increases at first and then decreases with the growth of informal economies. Further analysis shows that while this inverted, U-shaped relationship is significant in different regions of China, it is affected by different environmental impact factors. The paper concludes by discussing the policy implications for environmental protection and sustainable development.  相似文献   

14.
选取中国大陆构造环境监测网(陆态网)提供的155个测站2014~2018年对流层延迟产品,基于BP-Adaboost算法将多个弱神经网络预测器集成为强预测器,建立新的无气象参数对流层延迟计算模型。利用陆态网2019年参与建模的141个建模测站、未参与建模的62个测站的对流层延迟产品和中国区域86个无线电探空站解算出的对流层延迟精确值对BP-Adaboost模型进行精度评定,结果表明,新模型的平均偏差分别为0.62 mm、-1.16 mm和12.32 mm,均方根误差分别为25.30 mm、26.72 mm和46.29 mm,优于常见的无气象参数模型;BP-Adaboost模型在内陆地区或海拔2 km以上地区具有更高的精度,能够满足中国大陆区域卫星导航用户实时对流层延迟改正的需求。  相似文献   

15.
讨论5个全球海洋潮汐模型NAO99b、FES2004、GOT4.7、TPXO7.2和EOT11a在中国区域的差异性和适用性,并基于这些全球海潮模型和高分辨率区域海潮模型,分析中国区域GPS站海潮负荷形变特征。采用GIPSY软件对中国区域GPS站长时间观测数据进行处理,分析高精度区域海洋潮汐模型对中国沿海GPS站高精度位置时间序列的影响。分析表明,加入区域海洋潮汐负荷形变后,对GPS时间序列垂向的影响最大可达5.01 mm,可能会引起GPS时间序列中包含15 d和173 d 的虚假周期信号。  相似文献   

16.
基于制造业企业网络视角的城市网络核心—边缘结构的研究将加深对城市网络演化规律的理解。利用2020年中国制造业500强企业网络数据和隶属联系模型构建城市网络,研究了中国城市网络核心—边缘结构的演化特征,定量测度了核心—边缘结构的影响因素,并根据国际生产折衷理论解析了城市网络地位分异的动力机制。研究发现: 2005—2020年,核心区块的城市数量逐渐增加,主要由直辖市、经济特区以及东、中部地区的省会城市组成,这些城市通过互惠性的链接关系形成了凝聚子群,网络权力较为集中;边缘区块的城市则主要位于中、西部地区,城市间经济联系相对稀疏,整体网络结构并不稳定,城市的发展受到了网络资本的约束。关键资源、基础设施和区位优势是影响中国城市网络地位的决定性因素,择优选择、网络邻近和路径依赖构成了中国城市网络核心—边缘结构演化的动力机制,这将进一步增强核心城市的网络地位。在网络环境下,城市间的差距趋于扩大,城市网络地位的提升取决于城市在网络中的影响力,中国城市化政策需要做出相应调整。  相似文献   

17.
城市是人类文明的主要组成部分,是伴随人类文明与进步发展起来的。在城市建设飞速发展的今天,对古近代城市发展演变的研究显得尤为重要,其中一个重要的手段就是借助于城市地图。城市地图可相对准确地反映出当时城市的空间形态,对于研究城市历史平面布局变迁具有重要的参考价值。本文以近代城市地图(明、清、民国时期的城市地图)为主要研究对象,从其对传统城市地图的继承与受西方文化及先进测绘制图技术影响发展的角度,探究近代城市地图的类型特点、发展方向与价值。近代城市地图一方面既没有完全摆脱传统城市舆图在绘图手法和表现内容上的特点,另一方面又受到西方制图技术和文化的冲击与推动,在继承与发展中逐渐趋向多样化、专题化和近代化,并且能充分反映该时期城市发展的特点与地域特色。本文分别从同一城市(以北京为例)不同时期的城市地图和不同城市典型的城市图2个角度进行分析,讨论并总结了近代城市地图在表现手法、内容和绘图技术等方面的特征及地图本身的价值。  相似文献   

18.
中国工业用地出让价格空间格局及影响因素   总被引:2,自引:0,他引:2  
在财政分权和地方竞争的制度背景下,地方政府为了吸引更多企业投资,往往采取过量供应工业用地、压低工业用地价格的手段,直接导致了中国工业用地利用效率低下,甚至资源严重浪费等问题。合理调控工业用地供应规模及价格,发挥市场机制对工业用地出让价格的主导作用,是促进工业用地集约高效利用的重要途径。本文以工业用地出让价格为研究对象,利用2009、2011、2013、2015、2017年全国工业用地出让数据,采用分层模型,结合宏观和微观尺度,实证分析了中国工业用地出让价格的空间格局及关键影响因素。实证研究发现:① 我国不同区域的工业地价差异较大,政府的干预能力显著影响城市工业用地的出让价格,在控制其他影响因素下,干预能力越强,工业用地出让价格越低;② 宗地层面的因素中,距离城市中心或水源越近、交通通达度越好,工业用地的出让价格越高;③ 城市层面的因素中,人口数量越多,经济发展水平越高,工业用地的出让价格越高。本研究首次将分层模型引入实证计量方法,同时验证了影响工业用地出让价格的宏观与微观因素,是对现有工业用地出让价格研究文献的补充与延伸。  相似文献   

19.
高速远程滑坡运动堆积过程影响因素众多,在物理模型试验装置研发过程中应满足多因素变化需求,从而实现多功能目的.该试验装置初始状态下(垂直角度=20°,水平角度=0°)长3.40m,宽0.56m,高1.35m.设计有滑体体积调节、上滑槽坡度调节和下滑槽水平角度调节三大模块.材料上采用了3mm厚不锈钢钢板与8mm厚钢化玻璃2种材料,使用耐久性较好,并且采用分部件组装形式,安装有万向轮,便于实验仪器的搬运.基于砂子与卵石颗粒材料,应用所研发装置,初步开展了高速远程滑坡运动堆积过程物理模型试验,简要分析了滑体坡度、水平角度、滑体高度及基底材质等参数对滑动距离的影响规律.  相似文献   

20.
利用Bedmap2数据与中国第29次南极科学考察期间获取的冰雷达数据,在中山站至Dome A断面的Gamburtsev山脉地区首次构建11.3 km×11.5 km南极局部冰盖三维模型。着重介绍三维模型建立过程中的数据处理,其中冰雷达数据采集首次采用中国自主研发的冰雷达系统。详细阐述了冰雷达数据的处理流程,包括数据预处理、常规图像修正技术以及冰下地形获取,得到冰下基岩埋深和冰盖内部等时层埋深,插值得到100 m分辨率的冰下基岩DEM(海拔1 729 m~2 718 m)和等时层DEM(海拔2 601 m~2 950 m),利用南极Bedmap2冰表面栅格影像得到100 m分辨率的冰盖表面DEM(海拔3 679 m~3 745 m)。结合冰盖内外部数据处理结果,构建包含冰盖表面、冰盖内部等时层和冰下基岩地形特征的三维模型,并对模型进行检验,对冰盖内外部地形特征进行初步分析。  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号