Identification of the Credit Guarantee Network of Steel Trade Enterprises in China

The risk points in the credit guarantee network of steel trade enterprises were identified by using the network analysis method in this paper. Firstly, the formation and operation mechanism of steel trade credit guarantee network was analyzed.Secondly,a guarantee network was established to analyze the related network structure indexes based on the mutual guarantee data of 83 enterprises in a steel trade market. These indexes included centrality,honest broker,and structural hole. The results suggest that network analysis method can be used to find out the risk points of the guarantee network. Additionally,some recommendations are brought forth to reduce or prevent future crises.

北京国贸三期工程测量技术研究与实践

北京国贸三期超高层钢结构主楼高330m,结构柔性大,难以控制楼体垂直度的测量精度和测量基准点的竖向投测。根据施工现场具体情况,建立高精度的测量控制网,将基准点引测到施工作业面。同时设计制作了超高层钢结构钢柱测量校正基座和测量仪器支座的实用新型测量辅助工具,有效解决了高空作业面的问题。工程主楼楼体的垂直度得到了精确的控制,测量精度高于设计和规范要求。

“一带一路”钢铁贸易格局及演变规律研究

"一带一路"倡议为沿途各国钢铁贸易带来了契机,本文综合运用复杂网络的分析方法对2005~2014年"一带一路"沿线65个国家的钢铁贸易格局及演变规律进行了研究,探讨了国家间竞争与依赖关系,以期促进中国的钢铁贸易。研究结果表明:"一带一路"沿线国家的钢铁贸易呈多元化格局,且以中国、俄罗斯、印度、土耳其、乌克兰为贸易核心。除2008年经济危机,在2012年以前整体"一带一路"钢铁市场贸易额呈上升趋势,2012年之后5大核心国中只有中国钢铁出口保持着高速持续增长,成为最大的钢铁出口国。地缘相近的国家普遍具有紧密的贸易关系,而中国钢铁出口的主要市场为南亚及东南亚地区。中东地区钢铁市场竞争激烈,钢铁需求量巨大,是中国需要大力开拓的国际市场。