Endoscopic ultrasound(EUS)is an indispensable tool for the diagnosis and management of various diseases,particularly biliopancreatic disorders,as it provides detailed visualization of the gastrointestinal tract and su...Endoscopic ultrasound(EUS)is an indispensable tool for the diagnosis and management of various diseases,particularly biliopancreatic disorders,as it provides detailed visualization of the gastrointestinal tract and surrounding structures.As the demand for diagnostic and interventional EUS procedures increases,ensuring high-quality training for endoscopists is essential to improve patient outcomes.This mini-review provides an overview of the current state of EUS training and emphasizes the importance of a structured approach that integrates theoretical knowledge and hands-on experience.We discuss different training methods,focusing on the main courses available worldwide,and highlight their advantages and limitations.In addition,we examine the challenges of training for diagnostic and interventional EUS,such as limited access to training centers and the need for personalized feedback.Overall,improving EUS training programs is essential to enhance physician skills and ensure this advanced technique is used safely and efficiently in clinical practice.展开更多
Changes in food production,often driven by distant demand,have a significant influence on sustainable man agement and use of land and water,and are in turn a driving factor of biodiversity change.While the connection ...Changes in food production,often driven by distant demand,have a significant influence on sustainable man agement and use of land and water,and are in turn a driving factor of biodiversity change.While the connection between land use and demand through value chains is increasingly understood,there is no comprehensive concep tualisation of this relationship.To address this gap,we propose a conceptual framework and use it as a basis for a systematic review to characterise value-chain connection and explore its influence on land-use and-cover change.Our search in June 2022 onWeb of Science and Scopus yielded 198 documents,describing studies completed after the year 2000 that provide information on both value-chain connection and land-use or-cover change.In total,we used 531 distinct cases to assess how frequently particular types of land-use or-cover change and value-chain connections co-occurred,and synthesized findings on their relations.Our findings confirm that 1)market inte gration is associated with intensification;2)land managers with environmental standards more frequently adopt environmentally friendly practices;3)physical and value-chain distances to consumers play a crucial role,with shorter distances associated with environmentally friendly practices and global chains linked to intensification and expansion.Incorporating these characteristics in existing theories of land-system change,would significantly advance understanding of land managers’decision-making,ultimately guiding more environmentally responsible production systems and contributing to global sustainability goals.展开更多
Hello,everyone!I'm a fifth-grade student from Beijing.Today I want to talk about something I see a lot"tiger parenting".This means parents push their kids to study very hard.Many parents around me are li...Hello,everyone!I'm a fifth-grade student from Beijing.Today I want to talk about something I see a lot"tiger parenting".This means parents push their kids to study very hard.Many parents around me are like this.They send their kids to many after-school classes—online,inperson,big groups,small groups,even one-on-one lessons!Some parents give their kids a lot of extra homework.Others make them take many exams,like Olympic Math,KET,and PET.It feels like we always have to get certifi cates or we'll fall behind.Studying hard can be good.展开更多
Toray Industries,Inc.announced that from this April,it will im-plement the mass balance approach in manufacturing its TORAY-LON TMacrylic staple fiber.This method attributes properties fromboth biomass and plastic was...Toray Industries,Inc.announced that from this April,it will im-plement the mass balance approach in manufacturing its TORAY-LON TMacrylic staple fiber.This method attributes properties fromboth biomass and plastic waste,contributing to sustainabillty.Thecompany has already secured ISCC(nternational Sustainability&Carbon Certification)PLUScertification for this initiative.展开更多
In 2020,Shanghai and the provinces of Jiangsu,Zhejiang,and Anhui jointly issued the Specification for electronic certificate sharing and application,the first local standard in the field of government affairs in the Y...In 2020,Shanghai and the provinces of Jiangsu,Zhejiang,and Anhui jointly issued the Specification for electronic certificate sharing and application,the first local standard in the field of government affairs in the Yangtze River Delta region.The release and implementation of this standard have promoted the connectivity in government services,data and technological integration,accelerating the region’s coordinated and innovative development.展开更多
With the intensification of the energy crisis and the worsening greenhouse effect,the development of sustainable integrated energy systems(IES)has become a crucial direction for energy transition.In this context,this ...With the intensification of the energy crisis and the worsening greenhouse effect,the development of sustainable integrated energy systems(IES)has become a crucial direction for energy transition.In this context,this paper proposes a low-carbon economic dispatch strategy under the green hydrogen certificate trading(GHCT)and the ladder-type carbon emission trading(CET)mechanism,enabling the coordinated utilization of green and blue hydrogen.Specifically,a proton exchange membrane electrolyzer(PEME)model that accounts for dynamic efficiency characteristics,and a steam methane reforming(SMR)model incorporating waste heat recovery,are developed.Based on these models,a hydrogen production–storage–utilization framework is established to enable the coordinated deployment of green and blue hydrogen.Furthermore,the gas turbine(GT)unit are retrofitted using oxygenenriched combustion carbon capture(OCC)technology,wherein the oxygen produced by PEME is employed to create an oxygen-enriched combustion environment.This approach reduces energy waste and facilitates low-carbon power generation.In addition,the GHCT mechanism is integrated into the system alongside the ladder-type CET mechanism,and their complementary effects are investigated.A comprehensive optimization model is then formulated to simultaneously achieve carbon reduction and economic efficiency across the system.Case study results show that the proposed strategy reduces wind curtailment by 7.77%,carbon emissions by 65.98%,and total cost by 12.57%.This study offers theoretical reference for the low-carbon,economic,and efficient operation of future energy systems.展开更多
Quantum photonic processors are emerging as promising platforms to prove preliminary evidence of quantum computational advantage toward the realization of universal quantum computers.In the context of nonuniversal noi...Quantum photonic processors are emerging as promising platforms to prove preliminary evidence of quantum computational advantage toward the realization of universal quantum computers.In the context of nonuniversal noisy intermediate quantum devices,photonic-based sampling machines solving the Gaussian boson sampling(GBS)problem currently play a central role in the experimental demonstration of quantum computational advantage.A relevant issue is the validation of the sampling process in the presence of experimental noise,such as photon losses,which could undermine the hardness of simulating the experiment.We test the capability of a validation protocol that exploits the connection between GBS and graph perfect match counting to perform such an assessment in a noisy scenario.In particular,we use as a test bench the recently developed machine Borealis,a large-scale sampling machine that has been made available online for external users,and address its operation in the presence of noise.The employed approach to validation is also shown to provide connections with the open question on the effective advantage of using noisy GBS devices for graph similarity and isomorphism problems and thus provides an effective method for certification of quantum hardware.展开更多
Integrated energy systems(IES)are widely regarded as a key enabler of carbon neutrality,enabling the coordinated use of electricity,heat,and gas to support large-scale renewable integration.Yet their practical deploym...Integrated energy systems(IES)are widely regarded as a key enabler of carbon neutrality,enabling the coordinated use of electricity,heat,and gas to support large-scale renewable integration.Yet their practical deployment still faces major challenges,including rigid thermoelectric coupling,insufficient operational flexibility,and fragmented carbon and certificate market mechanisms.To address these issues,this study proposes a low-carbon economic dispatch model for integrated energy systems(IES)that reduces emissions and costs while improving renewable energy utilization.A coordinated framework integrating carbon capture,utilization,and storage,two-stage power-to-gas,combined heat and power,and ground-source heat pump technologies enhances multi-energy complementarity and overcomes the heat-led constraints of traditional combined heat and power systems.A unified carbon emission trading and green certificate trading mechanism is designed to balance economic and environmental goals through cross-market synergy.To address uncertainty,a distributionally robust chance-constrained model based on Kullback-Leibler divergence is introduced in Scenario 8.The model is solved using the GUROBI solver under multiple scenarios.Simulation results show a cost reduction from$56,166.66 to$25,840.32,carbon emission cuts from 801.38to 440.90 t,and wind/photovoltaic utilization rates reaching 98%,which fully demonstrates the effectiveness of the proposed framework in achieving cost-efficient low-carbon operation of IES.展开更多
Founded in 2016,Zhejiang Haiyin Digital Technology Co.,Ltd.stands at the forefront of innovation as a certified China National High-Tech Enterprise,relentlessly advancing the boundaries of single-pass digital printing...Founded in 2016,Zhejiang Haiyin Digital Technology Co.,Ltd.stands at the forefront of innovation as a certified China National High-Tech Enterprise,relentlessly advancing the boundaries of single-pass digital printing technology.Our crowning achievement—the revolutionary KUNR High-Speed Digital Printing System—earned China’s prestigious National First-in-Kind Certification.Engineered with 100%independent patents across mechanical,control,software,ink supply,and inks,we deliver tailored intelligent turnkey solutions that transform textile production dynamics.展开更多
Against the backdrop of digital-intelligence technologies profoundly reshaping the construction industry and industry-education integration becoming a core direction for vocational education reform,the traditional cur...Against the backdrop of digital-intelligence technologies profoundly reshaping the construction industry and industry-education integration becoming a core direction for vocational education reform,the traditional curriculum system of the engineering cost major in higher vocational colleges faces the dual dilemma of“technical disconnection from the industry and teaching detachment from practice.”This paper takes the engineering cost major at Chongqing Energy Vocational College as the research subject,systematically analyzing the background and significance of curriculum system construction from the“dual-collaboration”perspective of industry-education integration and digital-intelligence integration.It clarifies four construction principles:“symbiotic integration of digital-intelligence and major,precise alignment with enterprise needs,integration of courses,positions,competitions,and certificates,and dynamic optimization.”Subsequently,it proposes three construction paths:a modular curriculum framework design of“digital-intelligence foundation-professional core-practical innovation-ideological and political integration,”collaborative development of curriculum resources by schools and enterprises,and an integrated assessment and evaluation system of“courses,positions,competitions,and certificates.”The study aims to provide practical references for cultivating compound technical and skilled talents in the engineering cost major of higher vocational colleges to meet the demands of the digital-intelligence era,thereby facilitating the digital transformation and upgrading of the construction industry.展开更多
Forest certification is considered to be complementary to forest management policies and takes a significant effect on forest product trade. In recent decade, it has been followed with interest and approved by governm...Forest certification is considered to be complementary to forest management policies and takes a significant effect on forest product trade. In recent decade, it has been followed with interest and approved by governments and forestry de-partments in the world. This paper analyzes the influence of forest certification on forest product trade in the world, including the interest in certification in exporting countries and importing countries, trade flow and business competition, and the demands for Certified Forest Products (CFPs) and also discusses the influence of forest certification on forest product trade in China.展开更多
The expansibility of PKI is expected to have the features that when the amount of user exceeds the system capacity, the users’ requirement can still be met by simply expanding the number of PKI entities and managemen...The expansibility of PKI is expected to have the features that when the amount of user exceeds the system capacity, the users’ requirement can still be met by simply expanding the number of PKI entities and management levels, and this expansion should be achieved smoothly from the original system. The upward, downward, and horizontal expansions of PKI are discussed in this paper. A path discovery method is suggested to reduce the effect of PKI expansion to the end entities, so as to enhance the availbility of PKI services.展开更多
The grid technology is recognized as the next generation of Internet and becomcs the center of recent researches in the computer society. Security is one of the most crucial issues to address in Internet and is of the...The grid technology is recognized as the next generation of Internet and becomcs the center of recent researches in the computer society. Security is one of the most crucial issues to address in Internet and is of the same importance in the application of grid technology. As a critical component of grid security, the secure authen- tication needs to be well studied. In this paper, a two-step mobile agent based（TSMAB） authentication architecture is proposed based on Globus security infrastructure （GSI）. By using mobile agent （MA） technology, the TSMAB authentication architecture is composed of the junior-authentication and the senior-authentication. Based on the design and the analysis of TSMAB model, the result shows that the efficiency of grid authentication is improved compared with the GSI authentication.展开更多
With the increased use of technology in design processes, BIM （building information modeling） tools user＇s community has started to develop solutions through external applications such as plug-ins to automate speci...With the increased use of technology in design processes, BIM （building information modeling） tools user＇s community has started to develop solutions through external applications such as plug-ins to automate specific and repetitive tasks, amplify interoperability and add functionality versatility to BIM platforms. This paper seeks to evaluate Autodesk Revit platform plug-ins＇ state of the art, by means of a quantitative study of current repositories and the proposition of a categorization system of the purposes to which plug-ins are developed. Then a comparison between use and necessity of Brazil＇s AEC （architecture, engineering and construction） industry was done through a questionnaire with experienced professionals of the area. An analysis was carried out based on the professional＇s difficulties in meeting the requirements of Brazilian Performance Standard and compliance with Environmental Certification provisions, underpinning the possibility of using plug-ins to optimize the design processes under the perspective of performance and sustainability.展开更多
文摘Endoscopic ultrasound(EUS)is an indispensable tool for the diagnosis and management of various diseases,particularly biliopancreatic disorders,as it provides detailed visualization of the gastrointestinal tract and surrounding structures.As the demand for diagnostic and interventional EUS procedures increases,ensuring high-quality training for endoscopists is essential to improve patient outcomes.This mini-review provides an overview of the current state of EUS training and emphasizes the importance of a structured approach that integrates theoretical knowledge and hands-on experience.We discuss different training methods,focusing on the main courses available worldwide,and highlight their advantages and limitations.In addition,we examine the challenges of training for diagnostic and interventional EUS,such as limited access to training centers and the need for personalized feedback.Overall,improving EUS training programs is essential to enhance physician skills and ensure this advanced technique is used safely and efficiently in clinical practice.
文摘Changes in food production,often driven by distant demand,have a significant influence on sustainable man agement and use of land and water,and are in turn a driving factor of biodiversity change.While the connection between land use and demand through value chains is increasingly understood,there is no comprehensive concep tualisation of this relationship.To address this gap,we propose a conceptual framework and use it as a basis for a systematic review to characterise value-chain connection and explore its influence on land-use and-cover change.Our search in June 2022 onWeb of Science and Scopus yielded 198 documents,describing studies completed after the year 2000 that provide information on both value-chain connection and land-use or-cover change.In total,we used 531 distinct cases to assess how frequently particular types of land-use or-cover change and value-chain connections co-occurred,and synthesized findings on their relations.Our findings confirm that 1)market inte gration is associated with intensification;2)land managers with environmental standards more frequently adopt environmentally friendly practices;3)physical and value-chain distances to consumers play a crucial role,with shorter distances associated with environmentally friendly practices and global chains linked to intensification and expansion.Incorporating these characteristics in existing theories of land-system change,would significantly advance understanding of land managers’decision-making,ultimately guiding more environmentally responsible production systems and contributing to global sustainability goals.
文摘Hello,everyone!I'm a fifth-grade student from Beijing.Today I want to talk about something I see a lot"tiger parenting".This means parents push their kids to study very hard.Many parents around me are like this.They send their kids to many after-school classes—online,inperson,big groups,small groups,even one-on-one lessons!Some parents give their kids a lot of extra homework.Others make them take many exams,like Olympic Math,KET,and PET.It feels like we always have to get certifi cates or we'll fall behind.Studying hard can be good.
文摘Toray Industries,Inc.announced that from this April,it will im-plement the mass balance approach in manufacturing its TORAY-LON TMacrylic staple fiber.This method attributes properties fromboth biomass and plastic waste,contributing to sustainabillty.Thecompany has already secured ISCC(nternational Sustainability&Carbon Certification)PLUScertification for this initiative.
文摘In 2020,Shanghai and the provinces of Jiangsu,Zhejiang,and Anhui jointly issued the Specification for electronic certificate sharing and application,the first local standard in the field of government affairs in the Yangtze River Delta region.The release and implementation of this standard have promoted the connectivity in government services,data and technological integration,accelerating the region’s coordinated and innovative development.
基金supported by National Natural Science Foundation of China(52477101)Natural Science Foundation of Jiangsu Province(BK20210932).
文摘With the intensification of the energy crisis and the worsening greenhouse effect,the development of sustainable integrated energy systems(IES)has become a crucial direction for energy transition.In this context,this paper proposes a low-carbon economic dispatch strategy under the green hydrogen certificate trading(GHCT)and the ladder-type carbon emission trading(CET)mechanism,enabling the coordinated utilization of green and blue hydrogen.Specifically,a proton exchange membrane electrolyzer(PEME)model that accounts for dynamic efficiency characteristics,and a steam methane reforming(SMR)model incorporating waste heat recovery,are developed.Based on these models,a hydrogen production–storage–utilization framework is established to enable the coordinated deployment of green and blue hydrogen.Furthermore,the gas turbine(GT)unit are retrofitted using oxygenenriched combustion carbon capture(OCC)technology,wherein the oxygen produced by PEME is employed to create an oxygen-enriched combustion environment.This approach reduces energy waste and facilitates low-carbon power generation.In addition,the GHCT mechanism is integrated into the system alongside the ladder-type CET mechanism,and their complementary effects are investigated.A comprehensive optimization model is then formulated to simultaneously achieve carbon reduction and economic efficiency across the system.Case study results show that the proposed strategy reduces wind curtailment by 7.77%,carbon emissions by 65.98%,and total cost by 12.57%.This study offers theoretical reference for the low-carbon,economic,and efficient operation of future energy systems.
基金supported by the ERC Advanced Grant QU-BOSS(QUantum advantage via nonlinear BOSon Sampling,Grant No.884676)by ICSC-Centro Nazionale di Ricerca in High Performance Computing,Big Data,and Quantum Computing,funded by the European Union-NextGenerationEU.D.S.acknowledges Thales Alenia Space Italia for supporting the PhD fellowship.N.S.acknowledges funding from Sapienza Universitàdi Roma via Bando Ricerca 2020:Progetti di Ricerca Piccoli,Project No.RP120172B8A36B37.
文摘Quantum photonic processors are emerging as promising platforms to prove preliminary evidence of quantum computational advantage toward the realization of universal quantum computers.In the context of nonuniversal noisy intermediate quantum devices,photonic-based sampling machines solving the Gaussian boson sampling(GBS)problem currently play a central role in the experimental demonstration of quantum computational advantage.A relevant issue is the validation of the sampling process in the presence of experimental noise,such as photon losses,which could undermine the hardness of simulating the experiment.We test the capability of a validation protocol that exploits the connection between GBS and graph perfect match counting to perform such an assessment in a noisy scenario.In particular,we use as a test bench the recently developed machine Borealis,a large-scale sampling machine that has been made available online for external users,and address its operation in the presence of noise.The employed approach to validation is also shown to provide connections with the open question on the effective advantage of using noisy GBS devices for graph similarity and isomorphism problems and thus provides an effective method for certification of quantum hardware.
文摘Integrated energy systems(IES)are widely regarded as a key enabler of carbon neutrality,enabling the coordinated use of electricity,heat,and gas to support large-scale renewable integration.Yet their practical deployment still faces major challenges,including rigid thermoelectric coupling,insufficient operational flexibility,and fragmented carbon and certificate market mechanisms.To address these issues,this study proposes a low-carbon economic dispatch model for integrated energy systems(IES)that reduces emissions and costs while improving renewable energy utilization.A coordinated framework integrating carbon capture,utilization,and storage,two-stage power-to-gas,combined heat and power,and ground-source heat pump technologies enhances multi-energy complementarity and overcomes the heat-led constraints of traditional combined heat and power systems.A unified carbon emission trading and green certificate trading mechanism is designed to balance economic and environmental goals through cross-market synergy.To address uncertainty,a distributionally robust chance-constrained model based on Kullback-Leibler divergence is introduced in Scenario 8.The model is solved using the GUROBI solver under multiple scenarios.Simulation results show a cost reduction from$56,166.66 to$25,840.32,carbon emission cuts from 801.38to 440.90 t,and wind/photovoltaic utilization rates reaching 98%,which fully demonstrates the effectiveness of the proposed framework in achieving cost-efficient low-carbon operation of IES.
文摘Founded in 2016,Zhejiang Haiyin Digital Technology Co.,Ltd.stands at the forefront of innovation as a certified China National High-Tech Enterprise,relentlessly advancing the boundaries of single-pass digital printing technology.Our crowning achievement—the revolutionary KUNR High-Speed Digital Printing System—earned China’s prestigious National First-in-Kind Certification.Engineered with 100%independent patents across mechanical,control,software,ink supply,and inks,we deliver tailored intelligent turnkey solutions that transform textile production dynamics.
基金Chongqing Teaching Reform Research Project“Exploration of the Talent Cultivation Model for the Engineering Cost Major Based on Industry-Education Integration in the Digital Intelligence Era”(Z2241470)Scientific Research Project of Chongqing Vocational Education Association“Digital Intelligence Empowerment and Industry-Education Symbiosis:Constructing a New Talent Cultivation Model for Engineering Cost in Vocational Colleges”(2025ZJXH580108)。
文摘Against the backdrop of digital-intelligence technologies profoundly reshaping the construction industry and industry-education integration becoming a core direction for vocational education reform,the traditional curriculum system of the engineering cost major in higher vocational colleges faces the dual dilemma of“technical disconnection from the industry and teaching detachment from practice.”This paper takes the engineering cost major at Chongqing Energy Vocational College as the research subject,systematically analyzing the background and significance of curriculum system construction from the“dual-collaboration”perspective of industry-education integration and digital-intelligence integration.It clarifies four construction principles:“symbiotic integration of digital-intelligence and major,precise alignment with enterprise needs,integration of courses,positions,competitions,and certificates,and dynamic optimization.”Subsequently,it proposes three construction paths:a modular curriculum framework design of“digital-intelligence foundation-professional core-practical innovation-ideological and political integration,”collaborative development of curriculum resources by schools and enterprises,and an integrated assessment and evaluation system of“courses,positions,competitions,and certificates.”The study aims to provide practical references for cultivating compound technical and skilled talents in the engineering cost major of higher vocational colleges to meet the demands of the digital-intelligence era,thereby facilitating the digital transformation and upgrading of the construction industry.
文摘Forest certification is considered to be complementary to forest management policies and takes a significant effect on forest product trade. In recent decade, it has been followed with interest and approved by governments and forestry de-partments in the world. This paper analyzes the influence of forest certification on forest product trade in the world, including the interest in certification in exporting countries and importing countries, trade flow and business competition, and the demands for Certified Forest Products (CFPs) and also discusses the influence of forest certification on forest product trade in China.
文摘The expansibility of PKI is expected to have the features that when the amount of user exceeds the system capacity, the users’ requirement can still be met by simply expanding the number of PKI entities and management levels, and this expansion should be achieved smoothly from the original system. The upward, downward, and horizontal expansions of PKI are discussed in this paper. A path discovery method is suggested to reduce the effect of PKI expansion to the end entities, so as to enhance the availbility of PKI services.
文摘The grid technology is recognized as the next generation of Internet and becomcs the center of recent researches in the computer society. Security is one of the most crucial issues to address in Internet and is of the same importance in the application of grid technology. As a critical component of grid security, the secure authen- tication needs to be well studied. In this paper, a two-step mobile agent based（TSMAB） authentication architecture is proposed based on Globus security infrastructure （GSI）. By using mobile agent （MA） technology, the TSMAB authentication architecture is composed of the junior-authentication and the senior-authentication. Based on the design and the analysis of TSMAB model, the result shows that the efficiency of grid authentication is improved compared with the GSI authentication.
文摘With the increased use of technology in design processes, BIM （building information modeling） tools user＇s community has started to develop solutions through external applications such as plug-ins to automate specific and repetitive tasks, amplify interoperability and add functionality versatility to BIM platforms. This paper seeks to evaluate Autodesk Revit platform plug-ins＇ state of the art, by means of a quantitative study of current repositories and the proposition of a categorization system of the purposes to which plug-ins are developed. Then a comparison between use and necessity of Brazil＇s AEC （architecture, engineering and construction） industry was done through a questionnaire with experienced professionals of the area. An analysis was carried out based on the professional＇s difficulties in meeting the requirements of Brazilian Performance Standard and compliance with Environmental Certification provisions, underpinning the possibility of using plug-ins to optimize the design processes under the perspective of performance and sustainability.
