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Parameter prediction in laser bending of aluminum alloy sheet

WANG Xuyue, XU Weixing, CHEN Hua, WANG Jinsong

《机械工程前沿（英文）》 2008年第3卷第3期页码 293-298 doi: 10.1007/s11465-008-0046-x

摘要： Based on the basic platform of BP neural networks, a BP network model is established to predict the bending angle in the laser bending process of an aluminum alloy sheet (1–2 mm in thickness) and to optimize laser bending parameters for bending control. The sample experimental data is used to train the BP network. The nonlinear regularities of sample data are fitted through the trained BP network; the predicted results include laser bending angles and parameters. Experimental results indicate that the prediction allowance is controlled less than 5%–8% and can provide a theoretical and experimental basis for industry purpose.

关键词： control industry purpose nonlinear network aluminum

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Life cycle carbon emission assessment of a multi-purpose university building: A case study of Sri Lanka

Ramya KUMANAYAKE, Hanbin LUO

《工程管理前沿（英文）》 2018年第5卷第3期页码 381-393 doi: 10.15302/J-FEM-2018055

摘要：

Buildings are known to significantly affect the global carbon emissions throughout their life cycle. To mitigate carbon emissions, investigation of the current performance of buildings with regard to energy consumption and carbon emissions is necessary. This paper presents a process-based life cycle assessment methodology for assessing carbon emissions of buildings, using a multi-storey reinforced concrete building in a Sri Lankan university as a case study. The entire cradle-to-grave building life cycle was assessed and the life span of the building was assumed as 50 years. The results provide evidence of the significance of operation and material production stages, which contributed to the total carbon emissions by 63.22% and 31.59% respectively. Between them, the main structural materials, concrete and reinforcement steel made up 61.91% of the total carbon emitted at the material production stage. The life cycle carbon emissions of the building were found to be 31.81 kg·m⁻² CO₂ per year, which is comparable with the values obtained in similar studies found in the literature. In minimizing the life cycle carbon emissions, the importance of identifying control measures for both building operation and material production at the early design stage were emphasized. Although the other life cycle stages only contributed to about 5.19% of the life cycle carbon emissions, they should also receive attention when formulating control strategies. Some of the recommended strategies are introducing energy efficiency measures in building design and operation, using renewable energy for building operation and manufacturing of materials, identifying designs that can save mass material quantities, using alternative materials that are locally available in Sri Lanka and implementing material reuse and recycling. This study is one of the first to undertake a life cycle carbon emissions assessment for a building in the Sri Lankan context, with the hope of facilitating environmentally-friendly buildings and promoting sustainable construction practices in the country.

关键词： carbon emission life cycle assessment buildings sustainable construction Sri Lanka

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通用智能本体

卢策吾,王世全

《工程（英文）》 2020年第6卷第3期页码 221-226 doi: 10.1016/j.eng.2019.12.013

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Upgrading to urban water system 3.0 through sponge city construction

Nanqi Ren, Qian Wang, Qiuru Wang, Hong Huang, Xiuheng Wang

《环境科学与工程前沿（英文）》 2017年第11卷第4期 doi: 10.1007/s11783-017-0960-4

摘要： Urban water system 3.0 (Blue, gray, brown and yellow arrows represent water flow, wastewater flow, resource and energy respectively) Facing the pressure of excessive water consumption, high pollution load and rainstorm waterlogging, linear and centralized urban water system, system 2.0, as well as traditional governance measures gradually exposed characters of water-sensitivity, vulnerability and unsustainability, subsequently resulting in a full-blown crisis of water shortage, water pollution and waterlogging. To systematically relieve such crisis, we established healthy urban water-cycling system 3.0, in which decentralized sewerage systems, spongy infrastructures and ecological rivers play critical roles. Through unconventional water resource recycling, whole process control of pollutions and ecological restoration, system 3.0 with integrated management measures, is expected to fit for multiple purposes which involve environmental, ecological, economic and social benefits. With advantages of flexibility, resilience and sustainability, water system 3.0 will show an increasingly powerful vitality in the near future.

关键词： Water crisis Urban water system Spongy city Decentralized system Multi-purpose

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QLY2150型风电专用轮胎式动臂吊机研制与实践

黄耀怡,张志华,景海州,代宇

《中国工程科学》 2010年第12卷第11期页码 105-112

摘要：

简要介绍国内外风力发电建设的形势和我国对风电建设的最新发展规划，详细介绍基于上述形势而提出的QLY2150型风电安装专用轮胎式动臂吊机研制项目的总体方案、关键技术、创新点和实施细则。最后介绍样机投入风电场实际使用的情况，指出该新型吊机相对于通用轮胎式、汽车式和履带式吊机的优势所在。

关键词：风电专用吊机新型研制应用

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Systematic literature review on smart contracts in the construction industry: Potentials, benefits, and

《工程管理前沿（英文）》 2022年第9卷第2期页码 196-213 doi: 10.1007/s42524-022-0188-2

摘要： The development of digital transformation in the construction industry has led to the increasing adoption of smart contracts. As programmable applications to automatically write, verify, and enforce transaction conditions, smart contracts can be used in different areas mainly to improve automation level, information security, and built digital environment enhancement. However, the smart contract is commonly mentioned as a blockchain appendage, while its unique connotation and value in the construction industry have not been recognized. Therefore, this study carries out a systematic review based on 81 research articles published from 2014 to 2021 on smart contract applications in construction to explore and highlight their potentials under domain-specific requirements. Results are analyzed according to research type categorization and domain codification. Eight research domains are identified, where the three most highly explored domains are contract and payment, supply chain and logistics, and information management. The integration of smart contracts with other innovative concepts and advanced technologies is analyzed. The applicability, benefits, and challenges of smart contract applications regarding different research domains are discussed.

关键词： smart contracts blockchain construction industry BIM systematic review

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Target the neglected VOCs emission from iron and steel industry in China for air quality improvement

《环境科学与工程前沿（英文）》 2023年第17卷第8期 doi: 10.1007/s11783-023-1695-z

摘要：

● Haze formation in China is highly correlated with iron and steel industry.

关键词： Volatile organic compounds Iron and steel industry Air quality Sinter flue gas emission

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The Development Situation, Future and Counter Measures of Remanufacturing Industry in China

Wen-qiang Liu,Jun-yuan Mo,Cheng-kui Gu

《工程管理前沿（英文）》 2016年第3卷第2期页码 123-131 doi: 10.15302/J-FEM-2016021

摘要： Currently, resource supply and demand contradiction, and over-loaded environment capacity have become a bottleneck for sustainable economic development in China. Electro-mechanical products are approaching a peak of obsolescence, and massive abandoned electro-mechanical products are causing severe environmental pollution, huge waste of resources and potential safety hazard. Remanufacturing is repairing or modifying worn mechanical products using high-tech method, which buffers the contradiction between wasting and shortage of resources, and brings industry towards a comprehensive utilization of resource and environmental protection. As a new strategic industry, remanufacturing, which is highly coherent with the development strategy of the circular economy, is still in its infancy in China. This paper analyzes the developmental trends and problems of the remanufacturing industry in China, and proposes promoting measures based on the engineering practices of remanufacturing.

关键词： remanufacturing industry measures development

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石化工业的发展与催化技术

曹湘洪

《中国工程科学》 1999年第1卷第3期页码 11-15

摘要：

催化技术是石化工业发展的技术基础，本文用燕山石化公司技术进步的实例及发展中面临的问题，论述了催化技术的发展对推动石化企业技术进步的作用；同时石化工业也对催化技术的发展提出了一系列新课题：老装置的技术改造要求开发更多高性能的催化剂；清洁生产工艺要求开发环境友好催化剂；调整产品结构要求催化剂有良好的适应性；节能降耗、降低成本、增强产品竞争力要求不断降低催化剂的生产成本和改进催化剂寿命、转化率、选择性等性能。

关键词：石化工业催化技术

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我国汽车工业如何迎接WTO

金履忠

《中国工程科学》 2000年第2卷第8期页码 18-24

摘要：

文章指出，我国轿车工业形势严峻及其原因。为迎接WTO，要从实际出发，不同汽车类别，采取不同对策：要大力改进农用车；大力开发微型车这个现实存在的、潜在的广大市场；抓紧新型电动汽车的开发；增强国有巨型汽车企业中低档轿车的自主开发能力，提高其国际竞争力；放宽政策引进外资，发展中高档及高档轿车。使占汽车产量的绝大多数、适合广大城乡人民需要的汽车生产，掌握在有自主知识产权的民族工业手里。

关键词：汽车工业迎接WTO 对策

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Promoting hydrogen industry with high-capacity Mg-based solid-state hydrogen storage materials and systems

《能源前沿（英文）》 2023年第17卷第3期页码 320-323 doi: 10.1007/s11708-023-0889-1

摘要： Promoting hydrogen industry with high-capacity Mg-based solid-state hydrogen storage materials and systems

关键词： materials systems

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信息服务业支撑制造业发展策略研究

尹晓倩,辛勇飞,肖荣美

《中国工程科学》 2015年第17卷第7期页码 127-126

摘要：

中国共产党第十七次全国代表大会强调我国要大力推进信息化与工业化融合，中国共产党第十八次全国代表大会报告在论述“四化”同步发展时，首先提出要“推动信息化和工业化深度融合”，国务院印发的《中国制造2025》明确提出打造具有国际竞争力的制造业。本文正是基于“两化”融合的视角，以实现国际一流制造业水平为发展目标，分析信息服务业在制造业和价值链上各环节的支撑情况，通过案例分析和企业调研等考察提出在融合发展过程中面临的信息基础设施薄弱、企业创新意识落后等诸多问题及挑战，据此提出面向制造业发展的信息服务业的发展策略。

关键词：信息服务业制造业互联网《中国制造2025》两化融合

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自主创新技术学习与产业竞争力的提高——以台湾IC业为例

卢锐,盛昭瀚

《中国工程科学》 2007年第9卷第8期页码 35-39

摘要：

自主创新、技术学习是台湾集成电路（IC）产业遵循比较优势的产业政策和技术政策的结果，是基于本土市场的自主创新以及企业在技术学习上的努力，是发展中国家的企业能够在开放市场条件下获得竞争优势的原因。

关键词：技术学习自主创新产业竞争力 IC产业

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制造业创新驱动发展战略

“制造业创新驱动发展战略研究”课题组

《中国工程科学》 2015年第17卷第7期页码 20-23

摘要：

制造业是科技创新的主要载体，科技创新是制造业发展的主要力量。改革开放以来，我国制造业实现了快速增长，已成为全球制造业大国，但总体上仍然“大而不强”。科学分析我国制造业面临的发展环境、创新能力现状，实现我国制造业创新驱动发展，就是要坚持“自主创新，智能引领，绿色发展，重点突破”的指导方针，以全面提升自主创新能力为核心，以发展数字化、网络化、智能化制造为主线，以发展资源节约、环境友好的绿色制造为重要方向，率先实现重点领域重大产品和重大制造技术的突破，全面推进制造业转型升级，实现我国制造业由大到强的历史跨越。

关键词：制造业；创新驱动；智能制造；绿色制造；“四基”；重点产业

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煤炭产业可持续发展的选择

王安

《中国工程科学》 2011年第13卷第11期页码 4-8

摘要：

能源是经济持续快速增长的动力和保障。以煤为主的能源结构短期不会改变，为适应国民经济又好又快发展的要求，煤炭产业的发展面临历史选择。笔者分析了我国煤炭产业发展取得的成绩、呈现的特点和规律以及面临的困扰，探索未来可持续发展的方向。从产业模式、产业技术和产业路径上形成新的突破、创造新的机遇，符合加快转变经济发展方式的要求，有利于实现科学发展。

关键词：煤炭产业可持续发展选择