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Search Results: 1 - 10 of 462757 matches for " 蔡永龙 陈忠暖 刘松 "
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近10年珠三角城市群经济承载力及空间分异
Economic Carrying Capacity and Spatial Difference in Pearl River Delta City Group Over the Past 10 Years


- , 2017,
Abstract: 以珠三角城市群内9个城市为研究对象,选取18个经济发展水平梯度差异较小的区域内的城市为样本数据,运用修正之后的人口—经济承载力模型,测度珠三角城市群及内部九大城市2005—2014年的经济承载力水平,并分析经济承载力水平的空间分异. 研究结果显示:珠三角城市群经济承载力趋于小幅波动状态,但城市群内部极化效应显著,涓滴效应仍处于较低水平,区域经济一体化水平较低;城市群内部城市经济承载力等级分化严重,形成以深圳市、广州市、珠海市和佛山市为第一层级,东莞市和中山市为第二层级,惠州市、江门市和肇庆市分列三~五层级的经济承载力等级体系;地理空间上,形成以深圳市、广州市和珠海市为核心的三大区域,三大区域的经济承载力水平变化趋势为:广州市-佛山市-肇庆市(广佛肇),深圳市-东莞市-惠州市(深莞惠),珠海市-中山市-江门市(珠中江);近10年,珠三角城市群经济承载力呈东高-西低的发展状态,西岸塌陷的阴影效应十分显著.
:The Pearl River Delta is the frontier region of Chinese economic reform and opening up. To some extent, although the economy has gained rapid development, the level of regional economic difference has gradually increased. Therefore, taking in nine cities of pearl river delta urban agglomeration as the research object, selecting 18 regional cities with smaller economic development gradient difference as sample data, the level of economic capacity the pearl river delta urban agglomeration and internal nine big city from 2005 to 2014 is tested after using revised model measure, and the spatial difference of economic bearing capacity is analyzed. It is concluded as follows:Firstly, the economic bearing capacity of the pearl river delta urban agglomeration tend to be small fluctuations, but, the interior of the urban agglomeration, polarization effect is very significant; the trickle-down effect is still in the lower levels, and the trickle-down effect is still at the lower level. Secondly, internal urban agglomeration, the level differentiation bearing capacity of urban economic level is very serious, formed in Shenzhen, Guangzhou, Zhuhai and Foshan as the first level, Dongguan and Zhongshan to the next level, Huizhou, Jiangmen and Zhaoqing took three to five levels of economic bearing capacity rating system. Thirdly, the three core area is formed including Guangzhou, Shenzhen and Zhuhai, and the changing trend of three regional’ economic bearing capacity level is Guangzhou-Foshan-Zhaoqing (Guang-Fo-Zhao), Shenzhen-Dongguan-Huizhou(Shen-Guan-Hui), and Zhuhai-Zhongshan-Jiangmen(Zhu-Zhong-Jiang) in the geographical space. Finally, for nearly 10 years, the carrying capacity of the pearl river delta urban agglomeration in east area is higher than the western, and the shadow effect of west bank collapse is significant
扎根理论下旅游者满意度影响因素概念模型建构与分析——以广州四大生态型景区为例
A conceptual model construction and analysis about the influence factors of the tourist satisfaction based on grounded theory——a case of the four ecotype scenic spots in Guangzhou

,周翠芬,,翁锦娜, 
CAI Yonglong
,ZHOU Cuifen,CHEN Zhongnuan,WENG Jinna,LIU Song

- , 2018,
Abstract: 随着城市化的发展和生活水平的不断提高,公民关注生态环境的意识逐步提高,生态型景区作为改善城市生态环境的载体也越来越受到关注,因此研究生态型景区的健康发展意义重大.鉴于此,文章以广州4大生态型景区为研究客体,以旅游者为研究主体,以40 000余条游客评论语句为基础,结合扎根理论与Nvivo的研究方法,遵循扎根理论的开放性编码、主轴编码和选择性编码,分析生态型景区的游客满意度影响因素并建构概念模型.本研究发现了影响生态型景区游客满意度的33项主要因素,提取涵盖了33个初始范畴的5个主范畴,建构了由“出游期望—出游行为-核心吸引物体验-开发管理水平-游客评价”5个维度组成的游客满意度影响因素概念模型.揭示了出游期望和出游行为是概念模型的前提条件,核心吸引物体验和开发管理水平是最核心的两项影响因素,游后评价是游客旅游最终的结果体现.本文认为,未来生态型景区的建设与发展应注重引入核心吸引物,结合游客偏好定位景区主题形象,并赋予一定的市场宣传,是景区实现市场供给平衡的前提;结合市场发展趋势提高景区的服务水平,维护生态环境、控制游客规模、合理配套设施是其景区可持续发展的重要路径,理论上为旅游者与生态型景区二者的供给研究提供了新的思路与方法.
广州市房地产投资与经济增长关系分析
王帅,*,
华南师范大学学报(自然科学版) , 2015, DOI: 10.6054/j.jscnun.2014.12.027
Abstract: 采用1984—2013年统计数据,运用协整分析和格兰杰因果检验对广州市房地产投资与经济增长关系进行分析,结果表明(1)房地产开发投资与GDP增长之间存在长期的均衡关系.房地产开发投资对GDP增长长期产生显著的正向促进作用;但在短期内,房地产开发投资对GDP的增长产生弱的反向影响.(2)格兰杰因果检验显示,在滞后2期时房地产开发投资对GDP存在单向的显著可信的Granger因果关系,反之则不成立.(3)脉冲响应分析显示,房地产开发投资对GDP产生持久的正向影响,且影响程度逐渐增强.
流动与规制:城市流动水果商贩的合理活动空间分析
Mobility and Governance: The Exploration of Urban Mobility Fruit Sellers` Vivosphere

王帅
- , 2016,
Abstract: 摘要:以襄阳市核心区8个街道为例,运用市场区位和GIS方法划分蔬果市场和流动水果摊的覆盖范围,结合居民需求情况估算蔬果供需的空间平衡,分析流动水果商贩合理的活动空间,为优化其布局提供借鉴。研究发现:1)蔬果供需在空间上失衡,表现在蔬果市场存在供给空白和供给不足区域;2)市场服务空白区和市场供给不足区是流动水果商贩比较合理的活动空间。具体来说,需要在定中门街道、屏襄门街道、米公街道、清河口街道、汉江街道等街道适当的居住区设置流动商贩疏导点,以满足居民生活以及流动商贩生存需要。
: Abstract the article uses the method of market location arcgis9.3 to analyze the service area of fruit-vegetable markets and mobility fruit sellers, to estimate the balance space of supply and demand of fruit-vegetable markets, and to analyze the rationality of the fruit sellers` activity space. The results are: 1) the supply and demand of fruit-vegetable is imbalance in space, which performance in the Supply blank and undersupply of the fruit-vegetable markets. 2) The Supply blank and undersupply areas are the reasonable vivosphere of the mobility fruit sellers. In particular, mobility points need to be set in the appropriate residential place of Ding Zhongmen Street, Ping Xiangmen Street, Mi Gong Street, Qing He Street, Han Jiang Street, in order to meet the needs of the residents and mobility sellers
川东地区黄草峡构造嘉陵江组嘉二段储层特征及主控因素
Characteristics and Controlling Factors of Second Member of Jialingjiang Formation Reservoir in the Huangcaoxia Structure of East Sichuan
 [PDF]

王伟, 胡明毅,, 守春,,, 王丹, 全升, 潘勇利, 王志峰
Advances in Geosciences (AG) , 2013, DOI: 10.12677/AG.2013.33024
Abstract:
嘉二段是川东地区嘉陵江组主要储层发育段和含气层段,而黄草峡构造是主要的有利储层发育区之一,对其储层研究对该地区勘探开发具有重要的指导意义。通过岩心、薄片、测井资料的综合分析,认为川东地区黄草峡构造嘉二段主要储集岩为颗粒云岩和晶粒云岩,储集空间主要为粒内溶孔、晶间孔、晶间溶孔和构造缝、压溶缝;储层主要发育在嘉二2亚段,储集类型属裂缝孔隙型。其储层发育受控于沉积相带分布、成岩作用类型和构造改造,其中云坪和鲕滩微相为有利储集相带,云化作用和溶蚀作用有利形成大量孔隙空间,构造的改造增大储层的渗透性有利高质量储层的形成。
The Jia-2 member is the main reservoir and gas-bearing interval of Jialingjiang formation in the Northeastern Sichuan area. Research on the reservoir has guiding significance to exploration and developing of this area, since Huangcaoxia structure is one of the main favorable areas. Based on the analysis of core, thin section and well logging data, second member of Jialingjiang Formation in Huangcaoxia structures of East Sichuan is identified as different types of dolostone reservoirs, which mainly develop in the subsection of . The reservoir type is defined as fracture-pore type, and the main reservoir spaces are intergranular denudation pore, intercrystalline pore, intercrystalline denudation pore, tectonic fractures and pressolutional fractures. The reservoir is controlled and influenced by sedimentary facies, diagenesis and tectonic factor. The dolomite flat and Oolite bank microfacies are the best reservoir facies belt. Dolomitization and denudation can help to form many pore spacies, and permeability of the reservoir can be enlarged by tectonic factor. These contribute to form a high quality reservoir.
聚合物共混物脆韧转变性能研究─—形态参数对聚氯乙烯/丁腈橡胶共混物脆韧转变性能的影响
浙辉,朱晓光,张学东,漆宗能,王佛,
高分子学报 , 1996,
Abstract: 研究了非晶的聚氯乙烯(PVC)/丁腈橡胶(NBR)共混物脆韧转变特性,主要包括形态参数─—分散相粒径(d)、体积分数()、特别是分散相粒径分布(б)对其脆动转变性能的影响.结果表明,当d<临界值(d)或>临界值()时,PVC/NBR产生脆韧转变.而且dC随。的增大而减小;随б的增大而增大。增大不利于增韧和脆韧转变的发生。也是影响聚合物共混物脆韧转变的重要形态参数,理论预示与实验结果很好相符.结果并给出PVC/NBR共混物的冲击韧性也是分散相粒间基体层厚度(T)的单参数函数.当T>T时,共混物为脆性;当T≤T时,共混物韧性剧增成为超韧合金.虽然,以分子链结构参数分类,PVC介于准韧性和脆性聚合物之间.结果证实,准韧性聚合物共混物脆韧转变的Tc判据仍然适用于PVC/NBR共混物.
聚合物共混物脆韧转变性能研究Ⅳ橡胶粒子的分布对PVC/NBR共混物脆韧转变的影响
浙辉,朱晓光,张学东,漆宗能,,王佛
高分子学报 , 1997,
Abstract: 根据作者已建立的准网络形态模型和推导出的基体层厚度计算公式,从实验上研究了橡胶粒子的分布对聚氯乙烯(PVC)/丁氰橡胶(NBR)共混物脆韧转变的影响.结果表明,不仅无规形态PVC/NBR共混物存在脆韧转变主曲线,而且准网络形态PVC/NBR共混物也存在脆韧转变主曲线.但是两条主曲线明显不重合,表明橡胶粒子的分布对PVC/NBR共混物脆韧转变有显著影响.而且准网络形态PVC/NBR共混物的临界基体层厚度比无规形态PVC/NBR共混物的临界基体层厚度大得多,表明准网络形态比无规形态明显有利于增韧.因此临界基体层厚度不仅是基体的特征参数,还是界面粘结和橡胶粒子分布的函数.
聚合物共混物脆韧转变性能研究Ⅱ准韧性聚合物共混物脆韧转变的几何模型
浙辉,朱晓光,张学东,漆宗能,,王佛
高分子学报 , 1998,
Abstract: 给出了分散相粒间基体层厚度T与分散相粒径(d)、粒径分散度(σ)和分散相体积分数(∮)的定量关系式.发现σ对T的影响与∮有关,不仅T随σ的增大而增大,而且∮越大,这种影响越显著.用计算机图像分析仪直接测定了聚氯乙烯/丁腈橡胶、聚丙烯(PP)/三元乙丙橡胶、PP/乙烯醋酸乙烯酯共聚物共混物的T,发现这三种共混物的T近似于对数正态分布.理论预示与实验结果很好符合.
聚合物共混物脆韧转变性能研究Ⅲ.分散相形态参数之间的关系
浙辉,朱晓光,张学东,漆宗能,,王佛
高分子学报 , 1998,
Abstract: 为了研究形态(特别是分散状态)对聚合物共混物韧性的影响,建立了准网络形态模型,定义了分散相分布系数(ξ,0<ξ1),并给出其物理意义,推导了基体层厚度的计算公式,研究了形态参数的变化对基体层厚度的影响.对于常见的无规形态,ξ≈1.对于准网络形态,ξ<1,并且不是常数.计算结果表明,减小ξ和分散相粒径及其分布、增大其体积分数有利于减小基体层厚度.从理论上证明了准网络形态比无规形态更有利于减小基体层厚度.
聚合物共混物脆韧转变性能研究V.橡胶粒子的分布对聚氯乙烯/丁腈橡胶共混物韧性刚性关系的影响
浙辉,朱晓光,张学东,漆宗能,,王佛
高分子学报 , 1998,
Abstract: 聚合物共混物脆韧转变性能研究V.橡胶粒子的分布对聚氯乙烯/丁腈橡胶共混物韧性刚性关系的影响刘浙辉朱晓光张学东漆宗能(中国科学院化学研究所工程塑料国家重点实验室北京100080)蔡忠龙(香港理工大学应用物理系香港九龙)王佛松(中国科学院北京100864)关键词橡胶增韧聚氯乙烯,橡胶粒子的分布,韧性刚性关系为了解决传统的橡胶增韧塑料带来的超韧共混物的刚度和热变形温度大幅度降低的弊端,?...
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