新一代信息技术促使冷链智能化水平得以快速发展,精准把控智慧冷链发展水平是实现技术瓶颈重点突破与发展方向战略布局的前提基础与保障。基于此,本研究从供给能力、仓储能力、运输能力、经济效益、信息化水平等维度构建了中国智慧冷链...新一代信息技术促使冷链智能化水平得以快速发展,精准把控智慧冷链发展水平是实现技术瓶颈重点突破与发展方向战略布局的前提基础与保障。基于此,本研究从供给能力、仓储能力、运输能力、经济效益、信息化水平等维度构建了中国智慧冷链发展评价指标体系,运用熵权法并结合优劣解距离法(Technique for Order Preference by Similarity to Ideal Solution,TOPSIS)对2017—2021年中国30个省市(不包含西藏、中国香港、中国澳门、中国台湾)的智慧冷链发展水平进行定量评价,通过探索性空间数据分析法(Exploratory Spatial Data Analys,ESDA)和地理加权回归(Geographically Weighted Regression,GWR)分析评价指标对不同省市的影响变化。研究结果表明,经济发展状况、配套设施建设与信息化水平对智慧冷链建设影响作用较大;东部沿海地区智慧冷链发展普遍较好,西南和西北地区发展缓慢,整体发展较为落后;评价指标具有显著时空异质性,影响程度随空间位置和时间发生变化。为提升中国智慧冷链整体发展水平,就加强配套设施建设、促进信息化转型升级提出相应发展对策。本研究可为实现中国智慧冷链全局性谋划、战略性布局、整体性推进等提供科学依据。展开更多
Quantitative level evaluation of cold-rolled strip was significant for the shape control and the product structure optimization. Based on the probability statistics method and the shape pattern recognition method, the...Quantitative level evaluation of cold-rolled strip was significant for the shape control and the product structure optimization. Based on the probability statistics method and the shape pattern recognition method, the shape evaluation model of cold-rolled strip was established to evaluate real-time shape of the online strip. The model was embedded in the shape control system, and the online strip shape state was real-time observed whether to meet the technical indicators, so the shape level could be identified and evaluated. Based on the shape evaluation indicators, the shape component could be well controlled to improve the shape hit rate and the control stability, so that the rolled strip shape could meet the technical requirements. At a 1050 cold strip mill, the shape data of the scene typical specifications strip were online collected and real-time evaluated, and the hit of macro shape in less than 8 I was 68.44%, indicating that the mill shape control had considerable room for improvement, as well as the evaluation method was feasible and practical for quantitative evaluation of the strip shape. So the new evaluation model has important guiding significance to increase value-added and reduce product quality objection.展开更多
文摘新一代信息技术促使冷链智能化水平得以快速发展,精准把控智慧冷链发展水平是实现技术瓶颈重点突破与发展方向战略布局的前提基础与保障。基于此,本研究从供给能力、仓储能力、运输能力、经济效益、信息化水平等维度构建了中国智慧冷链发展评价指标体系,运用熵权法并结合优劣解距离法(Technique for Order Preference by Similarity to Ideal Solution,TOPSIS)对2017—2021年中国30个省市(不包含西藏、中国香港、中国澳门、中国台湾)的智慧冷链发展水平进行定量评价,通过探索性空间数据分析法(Exploratory Spatial Data Analys,ESDA)和地理加权回归(Geographically Weighted Regression,GWR)分析评价指标对不同省市的影响变化。研究结果表明,经济发展状况、配套设施建设与信息化水平对智慧冷链建设影响作用较大;东部沿海地区智慧冷链发展普遍较好,西南和西北地区发展缓慢,整体发展较为落后;评价指标具有显著时空异质性,影响程度随空间位置和时间发生变化。为提升中国智慧冷链整体发展水平,就加强配套设施建设、促进信息化转型升级提出相应发展对策。本研究可为实现中国智慧冷链全局性谋划、战略性布局、整体性推进等提供科学依据。
基金Item Sponsored by the National Science and Technology Support Plan of China(2011BAF15B03)National Natural Science Foundation of China(51305387)Hebei Province Colleges and Universities Natural Science Research Youth Foundation of China(Q2012104)
文摘Quantitative level evaluation of cold-rolled strip was significant for the shape control and the product structure optimization. Based on the probability statistics method and the shape pattern recognition method, the shape evaluation model of cold-rolled strip was established to evaluate real-time shape of the online strip. The model was embedded in the shape control system, and the online strip shape state was real-time observed whether to meet the technical indicators, so the shape level could be identified and evaluated. Based on the shape evaluation indicators, the shape component could be well controlled to improve the shape hit rate and the control stability, so that the rolled strip shape could meet the technical requirements. At a 1050 cold strip mill, the shape data of the scene typical specifications strip were online collected and real-time evaluated, and the hit of macro shape in less than 8 I was 68.44%, indicating that the mill shape control had considerable room for improvement, as well as the evaluation method was feasible and practical for quantitative evaluation of the strip shape. So the new evaluation model has important guiding significance to increase value-added and reduce product quality objection.
