China’s export of sewing machinesstarted in the 1950s.At that time theButterfly brand household sewingmachine produced by the Shanghai XiechangSewing Machine Factory and the Tiger brandsewing machine produced by the ...China’s export of sewing machinesstarted in the 1950s.At that time theButterfly brand household sewingmachine produced by the Shanghai XiechangSewing Machine Factory and the Tiger brandsewing machine produced by the ShanghaiHuigong Sewing Machine Factory enjoyeda good reputation in Southeast Asia. Along with China’s reform and openingdrive and economic development,and on thebasis of changes in market demand,thesewing machine industry has conducted rapidadjustment to the product structure,withmore stress being placed on technicalintroduction and renovation.Under theleadership an support of the Ministry ofLight Industry,products have developed fromhousehold sewing machines to Industrialones.While meeting the domestic展开更多
As the foundation of an industrialized country nowadays,machine tools industry is regarded as the engine of industrial development of a country.The developed countries,such as USA,Germany and Japan,have widely deploye...As the foundation of an industrialized country nowadays,machine tools industry is regarded as the engine of industrial development of a country.The developed countries,such as USA,Germany and Japan,have widely deployed the technology of using the patent in order to keep their strength in various fields.This research examins the CNC machine tools industry in the world by using the patent analysis method.It first gives an overview about the world patent application in CNC machine tools industry from 1963 to 2010 and divides the development of the industry into five stages.It also lists the patent application of the world top 20 countries,where the top 5 countries are compared.The patents of the world top 10 companies of machine tools manufacturers are mapped according to the international patent classification(IPC),and the future trends of world machine tools industry are discussed.Finally conclusions and suggestions are presented.展开更多
China’s machine tool industry was formed into a manufacturing and scientific research system of complete varieties during the past eight five-year-plan construction periods. There are eight comprehensive technologica...China’s machine tool industry was formed into a manufacturing and scientific research system of complete varieties during the past eight five-year-plan construction periods. There are eight comprehensive technological research institutes and 1,000 factories for producing major machines, functional components, tools, grinding tools, measuring tools展开更多
Digital Twin (DT) technology is revolutionizing the railway sector by providing a virtual replica of physical systems, enabling real-time monitoring, predictive maintenance, and enhanced decision-making. This systemat...Digital Twin (DT) technology is revolutionizing the railway sector by providing a virtual replica of physical systems, enabling real-time monitoring, predictive maintenance, and enhanced decision-making. This systematic literature review examines the status, enabling technologies, case studies, and frameworks for DT applications in railway systems with 91 selected papers from Scopus, Web of Science, IEEE, and the Snowballing Technique. The review focuses on four primary subsystems: tracks, civil structures, vehicles, and overhead contact line structures. Key findings reveal that DT has successfully optimized maintenance strategies, improved operational efficiency, and enhanced system safety. Internet of Things (IoT) devices, Artificial Intelligence (AI), machine learning, and cloud computing are critical in implementing DT models. However, challenges like data integration, high implementation costs, and cybersecurity risks remain, necessitating the discussed implications. Future research should focus on improving data interoperability, reducing costs through scalable cloud-based solutions, and addressing cybersecurity vulnerabilities. DT technology has the potential to revolutionize railway infrastructure management, ensuring greater efficiency, safety, and sustainability.展开更多
文摘China’s export of sewing machinesstarted in the 1950s.At that time theButterfly brand household sewingmachine produced by the Shanghai XiechangSewing Machine Factory and the Tiger brandsewing machine produced by the ShanghaiHuigong Sewing Machine Factory enjoyeda good reputation in Southeast Asia. Along with China’s reform and openingdrive and economic development,and on thebasis of changes in market demand,thesewing machine industry has conducted rapidadjustment to the product structure,withmore stress being placed on technicalintroduction and renovation.Under theleadership an support of the Ministry ofLight Industry,products have developed fromhousehold sewing machines to Industrialones.While meeting the domestic
基金Supported by Scientific Monitoring and Key Areas in-Depth Investigation and Research(No.ZD2012-4-2)Special Project of Scientific and Technological Basic Works(No.2009FY241000)Science and Technology Major Specific Project Core Electronic Elements,High-General Chips and Basic Software(No.2013XM01)
文摘As the foundation of an industrialized country nowadays,machine tools industry is regarded as the engine of industrial development of a country.The developed countries,such as USA,Germany and Japan,have widely deployed the technology of using the patent in order to keep their strength in various fields.This research examins the CNC machine tools industry in the world by using the patent analysis method.It first gives an overview about the world patent application in CNC machine tools industry from 1963 to 2010 and divides the development of the industry into five stages.It also lists the patent application of the world top 20 countries,where the top 5 countries are compared.The patents of the world top 10 companies of machine tools manufacturers are mapped according to the international patent classification(IPC),and the future trends of world machine tools industry are discussed.Finally conclusions and suggestions are presented.
文摘China’s machine tool industry was formed into a manufacturing and scientific research system of complete varieties during the past eight five-year-plan construction periods. There are eight comprehensive technological research institutes and 1,000 factories for producing major machines, functional components, tools, grinding tools, measuring tools
文摘Digital Twin (DT) technology is revolutionizing the railway sector by providing a virtual replica of physical systems, enabling real-time monitoring, predictive maintenance, and enhanced decision-making. This systematic literature review examines the status, enabling technologies, case studies, and frameworks for DT applications in railway systems with 91 selected papers from Scopus, Web of Science, IEEE, and the Snowballing Technique. The review focuses on four primary subsystems: tracks, civil structures, vehicles, and overhead contact line structures. Key findings reveal that DT has successfully optimized maintenance strategies, improved operational efficiency, and enhanced system safety. Internet of Things (IoT) devices, Artificial Intelligence (AI), machine learning, and cloud computing are critical in implementing DT models. However, challenges like data integration, high implementation costs, and cybersecurity risks remain, necessitating the discussed implications. Future research should focus on improving data interoperability, reducing costs through scalable cloud-based solutions, and addressing cybersecurity vulnerabilities. DT technology has the potential to revolutionize railway infrastructure management, ensuring greater efficiency, safety, and sustainability.
