生产服务业发展与广东产业结构升级关联分析

生产服务业在产业结构演进过程中起着积极推进作用。通过对比全球金融风暴与广东“双转移”战略实施前后生产服务业与各产业的动态关联关系,发现生产服务业对广东区域产业转型升级有明显促进作用,能有效主导区域经济结构调整与产业优化升级。生产服务业内部各行业所起作用并不一致,且内部各产业部门间的关联关系正在加强。     

生产性服务业集聚效应与我国城市化发展研究

基于生产性服务业在城市集聚过程中所形成的集聚效应,重点探讨了其对我国城市化发展的影响。结论表明：无论整体考察还是基于发展阶段差异下的分区域考察,一个地区生产性服务业集聚所形成的专业化服务环境,明显促进了城市化的发展;产业多样化外部性则导致了城市化不经济的出现,并因此阻碍城市化的发展;地方竞争外部性也表现出对城市化发展较为不利的影响。最后指出了提升生产性服务业集聚功能的建议。     

论明清盐商子弟科举考试中的商籍管理

商籍设立于明末,清承明制,并普及到全国各大盐场。明清商籍设立之初衷为方便远在他乡的盐商子弟参加科举应试,确保他们的科举权利。但因商籍设立与盐业资本之间的密切关系,商籍管理事实上赋予了盐商子弟一种科举特权。这样,商籍制度从设立伊始便具有二重属性:一为科举公平,一为政治交易。商籍管理的特权性质造成清代不断有人假冒商籍参加科举考试。为此,清政府逐步完善了商籍管理的各项制度,在一定程度上维护了科举考试的正常秩序。     

北京政府对华俄道胜银行停业之处理

华俄道胜银行在中国的主要金融活动集中在东北及新疆地区,它是中国近代史上一个特殊的金融机构,其特殊性体现在它的资金构成、机构组织、经营项目及强烈的政治特质等方面,所以当银行于1926年单方面宣告停业后,北京政府迅速做出相应处理以期保护中方利益。处理的焦点集中在法国的介入清理与道胜银行关税、盐税存储权的续传问题上。虽然北京政府最终以妥协完成了对银行的停业清理,但在处理过程中显现了其积极、务实的一面。     

生产者服务业与制造业互动机理述评及发展路径选择

生产者服务业脱胎于制造业母体并服务于制造业,两者分离的经济动因是成本优势,分离的表现形式是生产者服务业外包,产业主体地位关系演变形成各种产业关联状态。由于我国目前生产者服务业与制造业的互动发展态势明显,文章提出了基于国内市场的具有核心竞争力的完整NVC构建,以及发挥基于嵌入GVC习得的专业分工杠杆效应,建立NVC和GVC无缝链接的发展路径构想。     

Mineralogical and microstructural characteristics of historic Roman cement renders from Budapest,Hungary

Roman cements, one of the most extensively produced types of hydraulic binders of the second half of the 19th century, played an important role in the architecture of many European countries. This paper deals with the chemical-mineralogical and microstructural characterisation of historic Roman cement renders from Budapest, Hungary. Different microscopic techniques were used on polished thin sections and fracture surfaces in order to understand the method of producing these renders and the effect of urban pollution on them. The renders exhibited characteristics typical to a Roman cement mortar, such as high binder to aggregate ratios (b/a), mostly fine-grained aggregates and high capillary porosity, but without the shrinkage cracks that are also normally present. This research suggests that coarse residual cement grains may have acted in a manner similar to aggregates by absorbing stress and thereby reducing the formation of shrinkage cracks. Based on the mineral characteristics of residual cement grains, the samples could be divided into two groups, which correspond to either a higher or lower temperature of calcination of the original source material of the cement. Chemical characteristics of the binders suggest the presence of intermixed CaCO₃ originating from the carbonation of hydration products and partly from residual calcium carbonate of the raw material. Despite dense and often impermeable coats applied in later renovations and exposure to a polluted urban environment, which resulted in formation of gypsum on the surface of the renders, the samples show good to excellent state of preservation after more than a century. The strong “house of cards”-like arrangement of the complex C-(A)-S-H-type phases is responsible for both the high capillary porosity and the good resistance of Roman cement renders to atmospheric pollution and potentially damaging salts such as Na- and K-chlorides which are found near the base of the building due to sidewalk de-icing. These results help to better understand the behaviour of historic Roman cement renders, which in turn assists in making good decisions in choosing a repair material to future restorations of 19th century façades built with this material.     

Mathematical modeling of salt-gradient ion-exchange simulated moving bed chromatography for protein separations

The salt-gradient operation mode used in ion-exchange simulated moving bed chromatography (SMBC) can improve the efficiency of protein separations. A detailed model that takes into account any kind of adsorption/ion-exchange equilibrium, salt gradient, size exclusion, mass transfer resistance, and port periodic switching mechanism, was developed to simulate the complex dynamics. The model predictions were verified by the experimental data on upward and downward gradients for protein separations reported in the literature. All design and operating parameters (number, configuration, length and diameter of columns, particle size, switching period, flow rates of feed, raffinate, desorbent and extract, protein concentrations in feed, different salt concentrations in desorbent and feed) can be chosen correctly by numerical simulation. This model can facilitate the design, operation, optimization, control and scale-up of salt-gradient ion-exchange SMBC for protein separations.     

我国生产性服务业与制造业的相关性研究——基于产业集聚的分析

根据2003～2009年我国生产性服务业与制造业的时间序列数据,利用赫芬达尔指数及EG指数对其产业集聚进行测度,并分析了两大行业之间的集聚相关性。结果显示:2003～2009年间我国生产性服务业与制造业在产业的集聚度上仍然具有相关性,并且从整体上看,其产业集聚有进一步走向均衡化的趋势。     

太原市中心城市建设的对策研究

太原市作为山西省的中心城市，是山西省资金流、信息流、人才流以及物流等的中心。必须发挥好太原市中心城市的集聚、扩散及辐射作用。通过对太原市近年来的发展状况及在山西省所处的地位进行分析，提出太原市必须高度注视发展生产性服务业。建设太原市以及山西省的物流中心、金融资本中心、信息中心、交通运输中心以及研究开发中心，进而推动产业结构调整升级，推动新经济的增长，减少环境污染，最终实现太原市及山西省的经济与社会总体发展。     

金融危机后的价格传导机制研究

本文采用扩展SOP模型的方法,分析金融危机发生以来我国RMPI、PPI、CGPI和CPI物价传导机制的特征。结果发现,生产环节的PPI对上游投入环节的RMPI和下游批发环节的CGPI传导不畅,生产厂商在价格传递链处于夹心地位;金融危机后,消费环节的CPI不能回馈传导上游的任何环节,居民的需求拉动能力和作用发挥不明显。