The design of housing systems is today challenged by a highly uncertain context, dominated by the rapid development of functional and technological obsolescence in inherited housing models. If flexibility is the abili...The design of housing systems is today challenged by a highly uncertain context, dominated by the rapid development of functional and technological obsolescence in inherited housing models. If flexibility is the ability of a system to be easily modified and to respond to changes in the environment timely and conveniently, it can be considered as the antidote to obsolescence or the characteristic of the system that guarantees slippage over time. Our paper focuses on the concept of flexibility as a fundamental prerequisite for residential building in order to extend its life cycle design, through strategies and constructive solutions that ensure both the convertibility of the space in response to changing usage and the use of building materials that encourage the reversibility and the long-term easy maintenance of the technological choices that have been implemented. Flexibility is examined both from a conceptual point of view, so as to obtain a clear and logical definition that is distinct from related terms, as well as from a practical point of view, by finding ways to incorporate this requirement into the designing of housing.展开更多
Imagine a beanie that“sees”traffic lights for the visually impaired,or a shirt that doubles as a high-speed data receiver.These aren’t sci-fi fantasies-they’re the first threads of a revolution sparked by ultra-th...Imagine a beanie that“sees”traffic lights for the visually impaired,or a shirt that doubles as a high-speed data receiver.These aren’t sci-fi fantasies-they’re the first threads of a revolution sparked by ultra-thin,flexible semiconductor fibers.In a Nature study published February 2024,researchers from the Chinese Academy of Sciences and Nanyang Technological University unveiled a breakthrough in producing high-performance optoelectronic fibers,overcoming decades-old engineering hurdles.展开更多
This study focuses on the evolution of growth model and cultivation of competitive advantages under the ambidextrous innovation strategy.After a brief introduction of the connotation of ambidextrous innovation strateg...This study focuses on the evolution of growth model and cultivation of competitive advantages under the ambidextrous innovation strategy.After a brief introduction of the connotation of ambidextrous innovation strategy,the evolution of growth model of high-tech enterprises under the conventional strategy and the ambidextrous innovation strategy is analyzed.Furthermore,a discussion is made on how to cultivate enterprises’competitive advantages under the ambidextrous innovation strategy,thereby enabling enterprises to stand out from competitors under this new strategic model and truly achieve the goal of sustainable development.展开更多
In order to further improve the precision forming efficiency of a sand mold digital patternless casting and reduce the amount of sand mold cutting, a method for near-net forming of the sand mold with digital flexible ...In order to further improve the precision forming efficiency of a sand mold digital patternless casting and reduce the amount of sand mold cutting, a method for near-net forming of the sand mold with digital flexible extrusion technology was put forward. The theory, optimization algorithm and technology for sand mold nearnet forming were studied. Experimental results show that the sand mold forming efficiency can be increased by 34%, and the molding sand can be reduced by 44%. The method for near-net forming of a sand mold with digital flexible extrusion technology can effectively promote the application of digital patternless casting technology in the mass production of castings and thus greatly improves the efficiency and automation of sand mold manufacturing.展开更多
Because the UT （ultrasonic testing） flexible probe technology may be an appropriate answer to examine components with uneven surface, AREVA has developed an industrial application of the CEA＇s （French Atomic Energ...Because the UT （ultrasonic testing） flexible probe technology may be an appropriate answer to examine components with uneven surface, AREVA has developed an industrial application of the CEA＇s （French Atomic Energy and Alternative Energies） flexible phased arrays sensors. As a ＂first of a kind＂ project, the challenges faced were significant, including developing a phased array smart probe suitable for industrial use on rather simple but large scale geometries, permitting UT propagation within a constraining media structure and then targeting a qualification according to ENIQ （European Network for Inspection Qualification） methodology. A prototype flexible probe, designed for UT validation, and final flexible linear array probes permitting the UT behavior （as, e.g., detection and sizing from diffraction type echoes） to be maintained on wavy coupling surfaces, have been manufactured. These probes include a profilemeter with optical sensors control and a specifically designed coupling circuit （avoiding probe housing tightness issues）. Qualification has been performed using open test blocks, （where known ＂defects＂ exist, for procedure qualification）, and blind test blocks, （where ＂defects＂ are unknown, for qualification of testing personnel）. One open test bloc was customized to represent a ＂real＂ surface condition, with gaps up to 2.5 mm under the regular rigid probes. AREVAI/BGSI in Germany was selected to lead the project, with assistance in development and manufacturing sub-contracted to ＂CEA/LIST＂ laboratory, and the companies ＂IMASONIC＂ and ＂M2M＂. This paper describes the development of these probes and explains a few features （ENIQ qualification objectives fulfilled, UT data acquired on actual perturbed surface） that made their industrial implementation successful.展开更多
With the development of cities and the advancement of urbanization in China, the underground pipeline system in cities is becoming more and more complicated. Functional defects and structural defects caused by disrepa...With the development of cities and the advancement of urbanization in China, the underground pipeline system in cities is becoming more and more complicated. Functional defects and structural defects caused by disrepair and geological uneven settlement of urban water supply facilities are increasingly prominent. The contradiction between the population growth brought by the rapid development of the city and the high-quality and high-value development requirements for the environment has gradually increased, making it more difficult to excavate and repair. Compared with excavation repair, trenchless repair has the characteristics of no impact on traffic, no damage to the environment, short construction period, good construction safety and significant social benefits. Through the summary of flexible lining technology, reference and technical support are provided for the implementation of subsequent similar projects. The trenchless repair and renovation engineering technology of municipal underground pipelines has been recognized by people due to its small interference to the ground, high construction speed, low comprehensive cost, good safety, low carbon emissions and other reasons, and has been gradually introduced and popularized in the field of municipal pipe network construction, renovation and repair.展开更多
“In this article one of the funding sources in the Acknowledgements section to be added and reads as follows:this research was also supported by the Generalitat de Catalunya through the grant 2021 SGR 01108.The origi...“In this article one of the funding sources in the Acknowledgements section to be added and reads as follows:this research was also supported by the Generalitat de Catalunya through the grant 2021 SGR 01108.The original article has been corrected.”展开更多
Faced with the global warming trend,many coal-frontier countries including China have gradually come to develop flexible power generation to support a novel energy system with increasing renewable energy.While the exi...Faced with the global warming trend,many coal-frontier countries including China have gradually come to develop flexible power generation to support a novel energy system with increasing renewable energy.While the existing literature extensively discusses various technologies of flexible coal-fired power generation and energy storage,there remains a critical gap in systematic research that holistically assesses the current landscape of flexible generation technologies in coal-fired power plants while delineating actionable pathways for their evolution in low-carbon energy systems.In this paper,current situations from combustion side and pulverized coal side retrofit,wide load denitrification retrofit,turbine side flexibility retrofit,and energy storage coupled peak shifting and fast variable load response technology are illustrated first respectively.In addition,this paper presents a new perspective on the future direction of flexibility retrofit,including the integration of energy storage to enhance operational flexibility.This review can provide a reference for the research and development of deep peak-shaving and flexible retrofit technologies for power generation for pulverized coal boiler generating units in the future.展开更多
Electronic textiles(e-textiles)have gradually emerged as a burgeoning industry,with the advancement of flexible electronic technology and the growing demand for personalization,convenience,and comfort.As the typical r...Electronic textiles(e-textiles)have gradually emerged as a burgeoning industry,with the advancement of flexible electronic technology and the growing demand for personalization,convenience,and comfort.As the typical representative,sensory interactive e-textiles,integrated with visual,auditory,tactile,and other sensory experiences,have garnered significant attention in the next generation of wearable devices due to their outstanding performance and unique immersive interactive experience.To promote the practical application and better development of sensory interactive e-textiles,this paper reviews the research status of sensory interactive fibers and textiles in recent years,providing a detailed overview of functional fibers capable of achieving sensory interactive functions,categorizes system integration technologies for sensory interactive e-textiles,and summarizes the application scenarios of sensory interactive e-textiles.This review further delineates current design paradigms of e-textiles and proposes a novel design paradigm applicable to sensory interactive e-textiles.Finally,we clarify the challenges facing the future development of sensory interactive e-textiles and suggest vital research directions.展开更多
Organic electrochemical transistors(OECTs)are promising technologies for biosensing and braininspired computing due to their low-power signal amplification and neuron-like behavior.However,their manufacturing remains ...Organic electrochemical transistors(OECTs)are promising technologies for biosensing and braininspired computing due to their low-power signal amplification and neuron-like behavior.However,their manufacturing remains complex,especially when fabricated into flexible forms.To address the growing demand for flexible OECTs in wearable bioelectronics,in this work,we propose:i)a rapid and low-cost fabrication approach using flexible PCB(fPCB)technology and customized inkjet printing;ii)a non-aqueous gel-gated approach to improve the electrochemical stability of flexible OECTs associated with fPCBs;and iii)the above two approaches help accomplish the following concept:lowcost,integrated,and in-sensing computing system can be more readily realized with flexible OECT devices.This platform has been validated for scalability,stability,and performance in real-world applications,paving the way for developing low-cost,flexible,multifunctional OECT systems.展开更多
The rapid development of flexible electronic technologies has promoted flexible electronic markets,such as wearable electronics,intelligent clothing,electronic skin,flexible displays,implantable medical devices,etc.,w...The rapid development of flexible electronic technologies has promoted flexible electronic markets,such as wearable electronics,intelligent clothing,electronic skin,flexible displays,implantable medical devices,etc.,which reflects the direction of future flexible energy storage systems[1-3].Lithium-ion batteries(LIBs)have become the most important energy storage device relying on strong upstream-downstream supply chains and high-tech-maturity manufacturing technologies.To drive flexible electronics,LIBs need to maintain their electrochemical functions while having at least the same deformability as these devices.展开更多
文摘The design of housing systems is today challenged by a highly uncertain context, dominated by the rapid development of functional and technological obsolescence in inherited housing models. If flexibility is the ability of a system to be easily modified and to respond to changes in the environment timely and conveniently, it can be considered as the antidote to obsolescence or the characteristic of the system that guarantees slippage over time. Our paper focuses on the concept of flexibility as a fundamental prerequisite for residential building in order to extend its life cycle design, through strategies and constructive solutions that ensure both the convertibility of the space in response to changing usage and the use of building materials that encourage the reversibility and the long-term easy maintenance of the technological choices that have been implemented. Flexibility is examined both from a conceptual point of view, so as to obtain a clear and logical definition that is distinct from related terms, as well as from a practical point of view, by finding ways to incorporate this requirement into the designing of housing.
文摘Imagine a beanie that“sees”traffic lights for the visually impaired,or a shirt that doubles as a high-speed data receiver.These aren’t sci-fi fantasies-they’re the first threads of a revolution sparked by ultra-thin,flexible semiconductor fibers.In a Nature study published February 2024,researchers from the Chinese Academy of Sciences and Nanyang Technological University unveiled a breakthrough in producing high-performance optoelectronic fibers,overcoming decades-old engineering hurdles.
基金Project name:Evolution of Growth Model and Cultivation of Competitive Advantage under Ambidextrous Innovation Strategy-A case study of China’s high-tech enterprises Project no.:JKY106320,Project category:National key project of the“14th Five-Year Plan”of Education and Scientific Research of the Ministry of Education The organization of the project chair:University of Malaya。
文摘This study focuses on the evolution of growth model and cultivation of competitive advantages under the ambidextrous innovation strategy.After a brief introduction of the connotation of ambidextrous innovation strategy,the evolution of growth model of high-tech enterprises under the conventional strategy and the ambidextrous innovation strategy is analyzed.Furthermore,a discussion is made on how to cultivate enterprises’competitive advantages under the ambidextrous innovation strategy,thereby enabling enterprises to stand out from competitors under this new strategic model and truly achieve the goal of sustainable development.
基金financially supported by the National Science Foundation for Distinguished Young Scholars of China(Grant No.51525503)
文摘In order to further improve the precision forming efficiency of a sand mold digital patternless casting and reduce the amount of sand mold cutting, a method for near-net forming of the sand mold with digital flexible extrusion technology was put forward. The theory, optimization algorithm and technology for sand mold nearnet forming were studied. Experimental results show that the sand mold forming efficiency can be increased by 34%, and the molding sand can be reduced by 44%. The method for near-net forming of a sand mold with digital flexible extrusion technology can effectively promote the application of digital patternless casting technology in the mass production of castings and thus greatly improves the efficiency and automation of sand mold manufacturing.
文摘Because the UT （ultrasonic testing） flexible probe technology may be an appropriate answer to examine components with uneven surface, AREVA has developed an industrial application of the CEA＇s （French Atomic Energy and Alternative Energies） flexible phased arrays sensors. As a ＂first of a kind＂ project, the challenges faced were significant, including developing a phased array smart probe suitable for industrial use on rather simple but large scale geometries, permitting UT propagation within a constraining media structure and then targeting a qualification according to ENIQ （European Network for Inspection Qualification） methodology. A prototype flexible probe, designed for UT validation, and final flexible linear array probes permitting the UT behavior （as, e.g., detection and sizing from diffraction type echoes） to be maintained on wavy coupling surfaces, have been manufactured. These probes include a profilemeter with optical sensors control and a specifically designed coupling circuit （avoiding probe housing tightness issues）. Qualification has been performed using open test blocks, （where known ＂defects＂ exist, for procedure qualification）, and blind test blocks, （where ＂defects＂ are unknown, for qualification of testing personnel）. One open test bloc was customized to represent a ＂real＂ surface condition, with gaps up to 2.5 mm under the regular rigid probes. AREVAI/BGSI in Germany was selected to lead the project, with assistance in development and manufacturing sub-contracted to ＂CEA/LIST＂ laboratory, and the companies ＂IMASONIC＂ and ＂M2M＂. This paper describes the development of these probes and explains a few features （ENIQ qualification objectives fulfilled, UT data acquired on actual perturbed surface） that made their industrial implementation successful.
文摘With the development of cities and the advancement of urbanization in China, the underground pipeline system in cities is becoming more and more complicated. Functional defects and structural defects caused by disrepair and geological uneven settlement of urban water supply facilities are increasingly prominent. The contradiction between the population growth brought by the rapid development of the city and the high-quality and high-value development requirements for the environment has gradually increased, making it more difficult to excavate and repair. Compared with excavation repair, trenchless repair has the characteristics of no impact on traffic, no damage to the environment, short construction period, good construction safety and significant social benefits. Through the summary of flexible lining technology, reference and technical support are provided for the implementation of subsequent similar projects. The trenchless repair and renovation engineering technology of municipal underground pipelines has been recognized by people due to its small interference to the ground, high construction speed, low comprehensive cost, good safety, low carbon emissions and other reasons, and has been gradually introduced and popularized in the field of municipal pipe network construction, renovation and repair.
文摘“In this article one of the funding sources in the Acknowledgements section to be added and reads as follows:this research was also supported by the Generalitat de Catalunya through the grant 2021 SGR 01108.The original article has been corrected.”
基金supported by Major Science and Technology Projects of Xinjiang Uygur Autonomous Region[grant number 2023A01005-2]Youth Support Project of Tianshan Talents Training Program of Xinjiang Uygur Autonomous Region[grant number 2024TSYCQNTJ0018].
文摘Faced with the global warming trend,many coal-frontier countries including China have gradually come to develop flexible power generation to support a novel energy system with increasing renewable energy.While the existing literature extensively discusses various technologies of flexible coal-fired power generation and energy storage,there remains a critical gap in systematic research that holistically assesses the current landscape of flexible generation technologies in coal-fired power plants while delineating actionable pathways for their evolution in low-carbon energy systems.In this paper,current situations from combustion side and pulverized coal side retrofit,wide load denitrification retrofit,turbine side flexibility retrofit,and energy storage coupled peak shifting and fast variable load response technology are illustrated first respectively.In addition,this paper presents a new perspective on the future direction of flexibility retrofit,including the integration of energy storage to enhance operational flexibility.This review can provide a reference for the research and development of deep peak-shaving and flexible retrofit technologies for power generation for pulverized coal boiler generating units in the future.
基金support from the National Natural Science Foundation of China(52222310)the International Cooperation Fund of Science and Technology Commission of Shanghai Municipality(21130750100).
文摘Electronic textiles(e-textiles)have gradually emerged as a burgeoning industry,with the advancement of flexible electronic technology and the growing demand for personalization,convenience,and comfort.As the typical representative,sensory interactive e-textiles,integrated with visual,auditory,tactile,and other sensory experiences,have garnered significant attention in the next generation of wearable devices due to their outstanding performance and unique immersive interactive experience.To promote the practical application and better development of sensory interactive e-textiles,this paper reviews the research status of sensory interactive fibers and textiles in recent years,providing a detailed overview of functional fibers capable of achieving sensory interactive functions,categorizes system integration technologies for sensory interactive e-textiles,and summarizes the application scenarios of sensory interactive e-textiles.This review further delineates current design paradigms of e-textiles and proposes a novel design paradigm applicable to sensory interactive e-textiles.Finally,we clarify the challenges facing the future development of sensory interactive e-textiles and suggest vital research directions.
基金supported by grants from the the Collaborative Research Fund(C7005-23Y)the Theme-based Research Scheme(T45-701/22-R)from the Research Grants Council of the Hong Kong SAR Government+1 种基金the Innovation and Technology Fund(Mainland-Hong Kong Joint Funding Scheme,MHP/053/21,MHP/066/20)from the Hong Kong SAR Governmentthe Shenzhen-Hong Kong-Macao Technology Research Programme(SGDX20210823103537034)from the Shenzhen Science and Technology Innovation Committee,and the Seed Funding for Strategic Interdisciplinary Research Scheme from the University of Hong Kong(HKU).
文摘Organic electrochemical transistors(OECTs)are promising technologies for biosensing and braininspired computing due to their low-power signal amplification and neuron-like behavior.However,their manufacturing remains complex,especially when fabricated into flexible forms.To address the growing demand for flexible OECTs in wearable bioelectronics,in this work,we propose:i)a rapid and low-cost fabrication approach using flexible PCB(fPCB)technology and customized inkjet printing;ii)a non-aqueous gel-gated approach to improve the electrochemical stability of flexible OECTs associated with fPCBs;and iii)the above two approaches help accomplish the following concept:lowcost,integrated,and in-sensing computing system can be more readily realized with flexible OECT devices.This platform has been validated for scalability,stability,and performance in real-world applications,paving the way for developing low-cost,flexible,multifunctional OECT systems.
基金supported by the National Key Research and Development Program of China(2022YFE0138900)the National Natural Science Foundation of China(22279026)the Startup Fund for Introducing Talents of Southwest University of Science and Technology(23zx7171).
文摘The rapid development of flexible electronic technologies has promoted flexible electronic markets,such as wearable electronics,intelligent clothing,electronic skin,flexible displays,implantable medical devices,etc.,which reflects the direction of future flexible energy storage systems[1-3].Lithium-ion batteries(LIBs)have become the most important energy storage device relying on strong upstream-downstream supply chains and high-tech-maturity manufacturing technologies.To drive flexible electronics,LIBs need to maintain their electrochemical functions while having at least the same deformability as these devices.
