中国工程科学最新文献_第9页

Development Strategy of Smart Internet of Things System 智能物联网系统发展战略

中国工程科学 Pub Date : 2022-01-01 DOI: 10.15302/j-sscae-2022.04.001

B. Li, X. Chai, Yang Liu, Lei Chen, Dayin Wei

引用次数: 0

Development of Additive Manufacturing Technology and Industry in China 中国增材制造技术与产业的发展

中国工程科学 Pub Date : 2022-01-01 DOI: 10.15302/j-sscae-2022.04.018

Lei Wang, Bing-Yang Lu

{"title":"Development of Additive Manufacturing Technology and Industry in China","authors":"Lei Wang, Bing-Yang Lu","doi":"10.15302/j-sscae-2022.04.018","DOIUrl":"https://doi.org/10.15302/j-sscae-2022.04.018","url":null,"abstract":": As an emerging manufacturing technology, additive manufacturing (AM) has become one of the fastest developing technologies in the advanced manufacturing field with the continuous expansion of its applications. The development of AM industry provides a valuable opportunity for the development of modern manufacturing and the transformation and upgrading of traditional manufacturing. In this paper, developmental trends of the AM technology and industry in China and abroad are systematically summarized, and problems faced by China ’ s AM industry are analyzed, including inadequate research and development capabilities regarding common technologies and basic devices, lack of effective patent layout for the international market, and insufficient development of industrial scale and clusters. Focusing on a prospective layout of the AM industry, key development directions are proposed, including AM for biomedicine and medical devices, large-scale complex components, space, structural innovation, and new materials. Furthermore, several suggestions are put forward. First, an AM collaborative innovation mechanism should be established to support application innovation of enterprises. Second, special research plans on AM process reforms should be implemented to satisfy the demand for major high-end equipment. Third, the construction of regional AM industrial clusters should be promoted.","PeriodicalId":65586,"journal":{"name":"中国工程科学","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67371605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Coordinated Development Between Water Balance and Territory Space 水资源平衡与国土空间协调发展

中国工程科学 Pub Date : 2022-01-01 DOI: 10.15302/j-sscae-2022.05.009

Q. Hu, Xiumin Chen, Juan Gao, Junliang Jin, Yintang Wang, Jianyun Zhang

引用次数: 0

Cross-Medium Control of Water and Soil Environmental Pollution in Watershed 流域水土环境污染的跨媒介控制

中国工程科学 Pub Date : 2022-01-01 DOI: 10.15302/j-sscae-2022.05.007

X. Xia, Y. Pei, Shaokui Zheng, Ruimin Liu, Wu Wen, Gongqin Wang, Zhifeng Yang

{"title":"Cross-Medium Control of Water and Soil Environmental Pollution in Watershed","authors":"X. Xia, Y. Pei, Shaokui Zheng, Ruimin Liu, Wu Wen, Gongqin Wang, Zhifeng Yang","doi":"10.15302/j-sscae-2022.05.007","DOIUrl":"https://doi.org/10.15302/j-sscae-2022.05.007","url":null,"abstract":"Pollutants have complex source-sink relationships in water and soil environments at a catchment scale, and the transformation of pollutants in water and soil environments is primarily controlled by various water-soil interface processes. Therefore, the control of water and soil environmental pollution should consider water and soil environments as a whole, identify the real pollution source through cross-medium attribution analysis, and then control the pollution with cross-medium treatment. We first analyze the crossmedium migration processes of pollutants and the major influencing factors. Then we propose the principle and key process of crossmedium regulation, namely, cross-medium attribution identification and cross-medium treatment of water and soil environmental pollution. Moreover, we expound the important role of the processes of the following interfaces in cross-medium removal of pollutants: soil-water and slope-channel interfaces outside river channels, as well as water-sediment interface (including water-solid interfaces in the riverbed and lateral shore hyporheic zones) and water-suspended particulate matter interface in river channels. Furthermore, cross-medium control of non-point source pollutants in watershed, cross-medium removal of nitrogen-containing 收稿日期:2022-06-15;修回日期:2022-08-10 通讯作者:夏星辉,北京师范大学环境学院教授,研究方向为流域水土环境;E-mail: xiaxh@bnu.edu.cn 资助项目:国家重点研发计划项目(2017YFA0605001);中国工程院咨询项目“我国流域水污染防治战略的河长制建设研究”(2019-XZ-23); 国家自然科学基金项目(52039001) 本刊网址:www.engineering.org.cn/ch/journal/sscae","PeriodicalId":65586,"journal":{"name":"中国工程科学","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67372140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimizing the Route to the North of the Yellow River for the Eastern Route of the South-to-North Water Diversion Project 南水北调东线工程黄河北线优化

中国工程科学 Pub Date : 2022-01-01 DOI: 10.15302/j-sscae-2022.05.013

Yong Zhao, Fan He, Qingming Wang, Guohua He

{"title":"Optimizing the Route to the North of the Yellow River for the Eastern Route of the South-to-North Water Diversion Project","authors":"Yong Zhao, Fan He, Qingming Wang, Guohua He","doi":"10.15302/j-sscae-2022.05.013","DOIUrl":"https://doi.org/10.15302/j-sscae-2022.05.013","url":null,"abstract":"Since the Overall Planning of the South-to-North Water Diversion Project was approved 20 years ago, the supply and demand situation of water resources and water ecological environment problems in North China has undergone profound changes. Therefore, optimizing the subsequent route becomes significant for adapting to the new development situation in North China and for implementing major national strategies. The Beijing‒Tianjin‒Hebei region is the major water-receiving area of the follow-up project of the eastern route of the South-to-North Water Diversion Project. Analyses of the long-term supply and demand trend, spatial distribution, and structural characteristics of the Beijing‒Tianjin‒Hebei region exhibit that from the long-term supply and demand trend, the gap of water resources in this region is 3.9×10~6×10 m, and the growth of water demand is mainly contributed by the central and western urban areas, which are also key areas for implementing national strategies such as the construction of the Xiongan New Area. Moving water supply centers westward by establishing a new route into Beijing via Baiyang Lake while using existing river channels allows the route of the project to cover the shallow groundwater overexploitation areas to the largest extent, which is also 收稿日期:2022-06-28;修回日期:2022-08-15 通讯作者:何凡,中国水利水电科学研究院水资源研究所教授级高级工程师,研究方向为水资源管理、规划与战略;E-mail: hefan@iwhr.com 资助项目:国家重点研发计划项目(2021YFC3200204);国家杰出青年科学基金项目(51625904);国家自然科学基金项目(52061125101) 本刊网址:www.engineering.org.cn/ch/journal/sscae","PeriodicalId":65586,"journal":{"name":"中国工程科学","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67372407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Evaluating the Methods for Assessing Implementation Effects of River Chief System in China 中国河长制实施效果评价方法研究

中国工程科学 Pub Date : 2022-01-01 DOI: 10.15302/j-sscae-2022.05.020

Hailong Yin, Jia''ning Ge, Zuxin Xu, Jin Xu

{"title":"Evaluating the Methods for Assessing Implementation Effects of River Chief System in China","authors":"Hailong Yin, Jia''ning Ge, Zuxin Xu, Jin Xu","doi":"10.15302/j-sscae-2022.05.020","DOIUrl":"https://doi.org/10.15302/j-sscae-2022.05.020","url":null,"abstract":"Establishing a river chief system is stipulated in the newly amended Law of the People’s Republic of China on Prevention and Control of Water Pollution, which clarifies the liability of party or administrative heads at various levels for water environment rehabilitation in their own administrative regions. In this article, we analyze the implementation effects of the river chief in China, current assessment methods, and their deficiencies, and propose two quantitative assessing methods: (1) comprehensive water quality assessment for the cross sections of rivers and lakes and (2) assessment using the pollutant load intercepting rate of sewer networks, aiming to improve the scientific rationality for effect assessment of the river chief system. With Suzhou Creek rehabilitation in Shanghai as an example, application of the comprehensive water quality assessment method was introduced. By analyzing the pollutant load intercepting rate in various provinces (autonomous regions or municipalities) in China, we find that on average 34% wastewater is still discharged into water courses in an untreated state, leading to repeated occurrence of water quality deterioration. Introducing the comprehensive water quality assessment and the pollutant load intercepting rate into the river chief assessment will effectively push the government at all levels to concentrate their human, material, and financial resources onto urban drainage network correction and the interception of pollution sources discharged into watercourses.","PeriodicalId":65586,"journal":{"name":"中国工程科学","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67373133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Agricultural Resource Balance and International Import Potential of China by 2050 到2050年中国农业资源平衡与国际进口潜力

中国工程科学 Pub Date : 2022-01-01 DOI: 10.15302/j-sscae-2022.01.003

Haixia Zheng, Fei You, Qiyou Luo, Huajun Tang

引用次数: 7

Several Strategic Issues for the Construction of Ecological Civilization in Yangtze River Economic Belt 长江经济带生态文明建设的几个战略问题

中国工程科学 Pub Date : 2022-01-01 DOI: 10.15302/j-sscae-2022.01.015

J. Hao, Jinnan Wang, Shougong Zhang, Fengchang Wu, Hongqiang Jiang, Wenjun Wu, Lyujun Chen, Linbo Zhang, Nianlei Liu

引用次数: 1

Integrated Development of Rail Transit and Energies in China: Development Paths and Strategies 中国轨道交通与能源融合发展:发展路径与战略

中国工程科学 Pub Date : 2022-01-01 DOI: 10.15302/j-sscae-2022.03.018

Limin Jia, P. Cheng, Zhe Zhang, L. Ji, Chunmei Xu

引用次数: 2

Research Status and Future Development of Cooling Technologies for Green and Energy-Efficient Data Centers 面向绿色节能数据中心的冷却技术研究现状与未来发展

中国工程科学 Pub Date : 2022-01-01 DOI: 10.15302/j-sscae-2022.04.010

Xintuo Chen, Liyang Zhou, Chengbin Zhang, Shuhua Wang, Liangliang Zhang, Jianfeng Chen

{"title":"Research Status and Future Development of Cooling Technologies for Green and Energy-Efficient Data Centers","authors":"Xintuo Chen, Liyang Zhou, Chengbin Zhang, Shuhua Wang, Liangliang Zhang, Jianfeng Chen","doi":"10.15302/j-sscae-2022.04.010","DOIUrl":"https://doi.org/10.15302/j-sscae-2022.04.010","url":null,"abstract":": Data centers are important infrastructure in China, with constantly increasing industry size, market revenues, and electricity consumption. The major cooling systems of data centers currently in operation in China are air-cooled, with a low energy utilization rate and great potentials for energy saving. Therefore, it is imperative to develop novel cooling technologies for green and energy-efficient data centers. The cooling technology needs to solve two problems. First, as equipment heat production increases, the cooling capacity of the cooling system needs to be improved to match heat production and transfer rates. Second, to address the low energy efficiency problem, green and energy-efficient cooling technologies with industrial application prospects need to be developed. This study reviews the development status of data center cooling methods and categorizes cooling technologies into air conditioner cooling, fresh air cooling, indirect cooling, direct single-phase liquid cooling, and direct two-phase liquid cooling. We analyze the development trends of cooling technologies and suggest that green and high-efficient data centers should focus on the improvement in the efficiency of cooling systems, optimizations of hot and cold fluid channels, applications of new liquid cooling materials, and promotion of heat recovery systems. Furthermore, we propose suggestions for the stable and orderly development of the data center industry from the aspects of optimizing top-level design, developing key technologies, formulating scientific standards, improving industrial layout, and focusing on energy structure.","PeriodicalId":65586,"journal":{"name":"中国工程科学","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67370750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3