This article we mainly analyse the source codes of the linux,we can modify the proper file that related to the architect,wealso use the cross-compile tools arm-linux-gcc and we eventually port to the processor.S3C2410...This article we mainly analyse the source codes of the linux,we can modify the proper file that related to the architect,wealso use the cross-compile tools arm-linux-gcc and we eventually port to the processor.S3C2410,this article’s method is easy and it is suitable for practical applications.展开更多
As pivotal interfaces of maritime trade and urban-industrial systems,ports are increasingly challenged by their dual roles in enabling economic activity and generating air pollution and carbon emissions.This review pr...As pivotal interfaces of maritime trade and urban-industrial systems,ports are increasingly challenged by their dual roles in enabling economic activity and generating air pollution and carbon emissions.This review provides a structured assessment of emission characteristics,mitigation technologies,and governance strategies aimed at port sustainability.It first delineates the primary emission sources—ships,cargo handling equipment,land transport,and on-site energy systems—focusing on key pollutants such as NOx,SO2,PM2.5,VOCs,and CO2.Synergistic technological pathways are then examined,including ship-based alternatives such as shore power,low-carbon fuels,and carbon capture and storage,along with port-side electrification,operational optimization,and integration of renewables.The review further assesses how regulatory frameworks—encompassing mandatory rules,market-based incentives,and international cooperation—govern the adoption and scaling of these technologies.Drawing on case studies from both developed and developing economies,the review identifies enabling factors including institutional coordination and technological readiness,alongside persistent barriers such as fragmented governance and limited financing.It concludes by outlining four strategic imperatives:accelerating scalable technologies diffusion,enhancing multilevel governance alignment,embedding port transitions within broader urban and industrial systems,and promoting equity through just transition frameworks.By integrating technical and institutional dimensions,the review provides a forward-looking roadmap for low-carbon,clean,and resilient port development.展开更多
This study developed a two-dimensional storm surge model for hydrodynamic simulations in port engineering,utilizing an improved Local Time-Stepping(LTS)scheme.The model implements unstructured triangular grids with lo...This study developed a two-dimensional storm surge model for hydrodynamic simulations in port engineering,utilizing an improved Local Time-Stepping(LTS)scheme.The model implements unstructured triangular grids with localized refinement within the engineering area,enhancing computational efficiency through the improved LTS algorithm.Implementation in a Qingdao port demonstrated that,compared with the conventional Global Time-Stepping(GTS)scheme,the LTS approach enhanced computational efficiency by 5.08 times and 3.30 times before and after construction,respectively,reducing computation time by 30−40 hours.Validation results confirm the model’s high accuracy under both astronomical tide and storm surge conditions.Simulations of storm surges during Severe Typhoon Muifa(1109)and Super Typhoon Lekima(2019)further validated the model’s effectiveness.The results indicated that the overall simulation trend of storm surge aligned closely with the observed patterns of water level fluctuations,yielding highly satisfactory results.The Root Mean Square Error(RMSE)for Typhoon Lekima was 0.0083 m,while for Typhoon Muifa it was 0.0059 m,further demonstrating the model’s accuracy and applicability.The study analyzed the storm surge flow field post-construction using Typhoon Lekima as a case study.This research demonstrates the LTS model’s significant potential and promising applications in storm surge simulations and marine port construction.展开更多
As the number of electric vehicles continues to rise,pressure on charging infrastructure grows increasingly intense.Mobile charging technology,with its flexibility and deployability,has emerged as an effective solutio...As the number of electric vehicles continues to rise,pressure on charging infrastructure grows increasingly intense.Mobile charging technology,with its flexibility and deployability,has emerged as an effective solution.Within this technology,charging robots or vehicles must autonomously locate and dock with charging ports.Consequently,precise and stable charging port recognition constitutes both a prerequisite and the core bottleneck for achieving automated operations in mobile charging systems.However,in practical scenarios,charging ports often prove difficult to detect reliably due to factors such as physical obstructions,variations in lighting,and long shooting distances.To address this,this paper proposes CP-YOLO,an improved YOLOv9-based detection model for electric vehicle charging ports.The method first incorporates Space-to-Depth Convolution(SPDConv)into the backbone network,reorganising spatial dimensions into channel dimensions to preserve fine-grained features,thereby providing high-fidelity detail for subsequent processing.Secondly,it constructs the C2f-MLKA module,which fuses multi-level features and enhances contextual modelling capabilities through large-kernel attention and gating mechanisms.Finally,introducing Spatially Adaptive Feature Modulation(SAFM)in the neck network enables multi-scale feature fusion and dynamic adjustment of feature weights in critical regions.This forms a progressive mechanism—detailed fidelity,enhanced contextual understanding,and spatial adaptability—to elevate the model’s recognition performance.Experimental results demonstrate that compared to the original YOLOv9 model,Mean Average Precision(mAP)improves by 3.8%,outperforming Faster Region-based Convolutional Neural Networks(R-CNN),EfficientDet and Real-Time Detection Transformer(RT-DETR)by 22.8%,18.8%and 10%,respectively,and surpasses other YOLO variants by 12.6%,8.0%,3.8%,5.5%,7.3%and 9.4%,respectively.This effectively enhances detection accuracy for charging ports in complex environments,offering practical reference value for mobile charging technology applications.展开更多
The negative pressure near-wall particle collection method employs suction flow to circulate the medium along the inner wall of the collection port,creating flow separation that affects flow characteristics and partic...The negative pressure near-wall particle collection method employs suction flow to circulate the medium along the inner wall of the collection port,creating flow separation that affects flow characteristics and particle forces.This investigation utilizes a CFD simulation method,validated through Zhao’s experiments,and implements a“circular pipe suction model”to examine how collection port parameters-specifically wall thickness and shape-influence the flow field and particle collection efficiency across different Reynolds numbers.The findings demonstrate that wall thickness and port shape substantially affect flow separation,as evidenced by recirculation zones that compress the flow and modify the particle force coefficient.Typically,greater wall thickness results in decreased particle force coefficients,with variations up to 15%.Moreover,collection ports with inward-pointing sharp angles demonstrate the highest particle force coefficients,while those with outward-pointing angles show the lowest,exhibiting variations up to 23%.These results indicate that optimizing collection port design through wall thickness and shape modifications can improve particle collection efficiency,enhancing practical applications.展开更多
Flow battery energy storage(FBES)provide a flexible storage for low-carbon port integrated energy systems(PIES).To improve renewable energy accommodation and overcome the high cost and low utilization of decentralized...Flow battery energy storage(FBES)provide a flexible storage for low-carbon port integrated energy systems(PIES).To improve renewable energy accommodation and overcome the high cost and low utilization of decentralized storage,this paper proposes a shared flow battery energy storage(SFBES)framework for multi-port integrated energy systems.A bi-level collaborative optimization model is developed,where the upper-level optimizes storage power and energy capacities,and the lower-level coordinates renewable generation,quay crane(QC),electric truck(ET),and multi-energy conversion units.The model is reformulated as a single-level MILP using KKT conditions.展开更多
Telesurgery,or remote surgery,involves performing operations on a patient located in a different geographical location,often separated by hundreds or even thousands of kilometers[1].Advances in robotic systems and 5G ...Telesurgery,or remote surgery,involves performing operations on a patient located in a different geographical location,often separated by hundreds or even thousands of kilometers[1].Advances in robotic systems and 5G communication technology have enabled the successful execution of complex procedures,ensuring safety and precision.Previous reports of human robotic telesurgery have exclusively involved multi-port systems,with procedures performed across general surgery,cardiology,and otolaryngology[[2],[3],[4]].Commonly reported cases include cholecystectomy,hemicolectomy,percutaneous coronary intervention,and transoral robotic surgery,using network technologies with transmission distances ranging from 15 km to 14000 km and latency values between 28 ms and 280 ms[[2],[3],[4],[5]].Telesurgery enhances accessibility,while single-port surgery minimizes patient trauma,representing two pivotal directions in robotic surgery.Single-port robotic surgery,using a single incision,reduces invasiveness,leading to less postoperative pain,faster recovery,and improved cosmetic outcomes.展开更多
The integration of a high proportion of renewable energy introduces significant challenges for the adaptability of traditional fault nature identification methods.To address these challenges,this paper presents a nove...The integration of a high proportion of renewable energy introduces significant challenges for the adaptability of traditional fault nature identification methods.To address these challenges,this paper presents a novel fault nature identification method for renewable energy grid-connected interconnection lines,leveraging wavelet packet decomposition and voltage waveform time-frequency morphology comparison algorithms.First,the paper investigates the harmonic injection mechanism during non-full-phase operation following fault isolation in photovoltaic renewable energy systems,and examines the voltage characteristics of faulted phases in renewable energy scenarios.The analysis reveals that substantial differences exist in both the time and frequency domains of phase voltages before and after the extinction of transient faults,whereas permanent faults do not exhibit such variations.Building on this observation,the paper proposes a voltage time-frequency feature extraction method based on wavelet packet decomposition,wherein low-frequency waveform components are selected to characterize fault features.Subsequently,a fault nature identification method is introduced,based on a voltage waveform time-frequency morphology comparison.By employing a windowing technique to quantify waveform differences before and after arc extinction,this method effectively distinguishes between permanent and transient faults and accurately determines the arc extinction time.Finally,a 220 kV renewable energy grid connection line model is developed using PSCAD for verification.The results demonstrate that the proposed method is highly adaptable across various fault locations,transition resistances,and renewable energy control strategies,and can reliably identify fault nature in renewable energy grid connection scenarios.展开更多
New electronic devices based on the physical properties of electrically driven skyrmions are promising for logic computing and nonvolatile memory applications.However,achieving efficient and practical compute-storage ...New electronic devices based on the physical properties of electrically driven skyrmions are promising for logic computing and nonvolatile memory applications.However,achieving efficient and practical compute-storage integration remains challenging owing to the structural complexity,limited functionality,and low flexibility observed in most skyrmion-based devices.In this study,we designed a novel device architecture that integrates seven basic logic gates into a unified physical structure.Their operation can be enabled by physical mechanisms,such as spin-orbit torque,spin-transfer torque,skyrmion-edge repulsions,and skyrmion-skyrmion interactions.Furthermore,by incorporating voltage-controlled magnetic anisotropy,the device achieved multi-input capability and reconfigurability functionality.Ultralow power consumption(<1 fJ/bit per logic function)and extremely high logic density were achieved.Significantly,the compatibility of this nanotrack design with existing skyrmion racetrack memory paves the way for advanced in-memory computing in spintronic architectures.展开更多
This paper proposes a stochastic optimization model that considers not only the uncertainties in wave and vessel arrival times but also sedimentation and tidal occurrence.Those factors impact the vessel’s operational...This paper proposes a stochastic optimization model that considers not only the uncertainties in wave and vessel arrival times but also sedimentation and tidal occurrence.Those factors impact the vessel’s operational cost,influencing the seaport’s competitiveness.Therefore,seaport operators need to decide the reference vessel size,dredging maintenance actions,and infrastructure required to ensure the smooth operation of the vessel.The optimization model is solved by invoking a variant of the genetic algorithm(GA).Case studies based on actual seaports in Indonesia are conducted to illustrate the model’s application and results clearly.It was found that the uncertainties of wave and vessel arrival are responsible for deviations in expected operational costs,while increasing infrastructure costs minimizes these deviations and reduces the expected operational costs.展开更多
Established in 2019,the Shandong Port Group(SPG)comprises four port groups(Qingdao Port,Rizhao Port,Yantai Port,and Bohaiwan Port)and 12 business segments.SPG connects 3,345 kilometers of coastline within Shandong Pro...Established in 2019,the Shandong Port Group(SPG)comprises four port groups(Qingdao Port,Rizhao Port,Yantai Port,and Bohaiwan Port)and 12 business segments.SPG connects 3,345 kilometers of coastline within Shandong Province.Its cargo throughput has consistently ranked first globally for many years,and its container volume growth ranks second globally,forming a port cluster covering the entire industrial chain.展开更多
BACKGROUND Robotic liver resection has progressively pushed the boundaries of minimally invasive hepatopancreatobiliary surgery.The recently introduced da Vinci singleport(SP)system enables placement of a multiple-cha...BACKGROUND Robotic liver resection has progressively pushed the boundaries of minimally invasive hepatopancreatobiliary surgery.The recently introduced da Vinci singleport(SP)system enables placement of a multiple-channel cannula through a single 2.5-4 cm incision and aims to limit parietal trauma while maintaining the advantages of current multi-port robotic platforms.Here,we report the first Italian case of hepatic resection performed using this platform and summarize the existing literature.CASE SUMMARY A 51-year-old woman with a history of breast cancer presented with a 15-mm metastasis in segment II of the liver.Following multidisciplinary assessment,a robotic left lateral sectionectomy was performed using a supra-umbilical 4-cm incision.Docking time was 20 min,and the total operative time was 255 min,with 50 mL of blood loss and 30 min of intermittent hepatic pedicle clamping.No drains were placed.Postoperative pain was≤1 on the Visual Analog Scale,and the patient was discharged on postoperative day 3 without any complications.Histology showed a 12-mm breast cancer metastasis with 2-mm clear margins and good cosmesis.CONCLUSION According to published case series and comparative studies,SP robotic liver resections are technically feasible and safe,with reduced postoperative pain,shorter hospital stays,and improved cosmesis.However,current evidence is limited to selected minor resections,and longer follow-up is necessary to validate the oncological outcomes.展开更多
Shandong Port Group(SPG),which was established in August 2019,regards standardization as the cornerstone of modern enterprise management,and vigorously implements the standardization innovation strategy.Its standardiz...Shandong Port Group(SPG),which was established in August 2019,regards standardization as the cornerstone of modern enterprise management,and vigorously implements the standardization innovation strategy.Its standardization work mainly focuses on the following four aspects.展开更多
The final and award ceremony of the International Standardization Youth Star Competition 2025 were held in Qingdao on November 22-23.The competition attracted 236 teams nationwide who demonstrated great enthusiasm for...The final and award ceremony of the International Standardization Youth Star Competition 2025 were held in Qingdao on November 22-23.The competition attracted 236 teams nationwide who demonstrated great enthusiasm for participating in the standardization undertaking.The competition followed the mode of“the industry puts forward questions,and the academia provides solutions”.Shandong Port Group Co.,Ltd.,Contemporary Amperex Technology Co.,Ltd.(CATL),Huawei Technologies Co.,Ltd.,and Beijing Zhongbiaolvjian Engineering Design and Research Institute Co.,Ltd.set up themed tracks respectively,and competitors developed standard proposals for the corresponding themes.展开更多
A roundtable focusing on the coordinated development of institutional innovation and consumption governance in pilot free trade zones(ports)was held during the thematic forum,which was presided over by Lin Gang,Deputy...A roundtable focusing on the coordinated development of institutional innovation and consumption governance in pilot free trade zones(ports)was held during the thematic forum,which was presided over by Lin Gang,Deputy Director-General of the Hainan Administration for Market Regulation.展开更多
Port automation is transforming global maritime trade, yet its effect on the balance of bargaining power between ports and shipping alliances remains unclear. Using Shanghai Yangshan Deep-Water Port as a case study, t...Port automation is transforming global maritime trade, yet its effect on the balance of bargaining power between ports and shipping alliances remains unclear. Using Shanghai Yangshan Deep-Water Port as a case study, this essay examines how automation-driven efficiency gains interact with market structure to shape port bargaining power in the short and long run. Ports operate in a moderately competitive, technology-intensive market, while shipping alliances form a tight oligopoly that controls the majority of global container capacity. In the short run, automation lowers costs and concentrates traffic at early-adopting ports, temporarily strengthening their negotiating position. However, as automation diffuses industry-wide, cost advantages erode, competition intensifies, and involution sets in: throughput rises while per-unit margins stagnate. Consequently, the surplus generated by efficiency gains increasingly accrues to shipping alliances rather than to ports. The essay concludes that automation alone does not guarantee ports greater economic power, and proposes two countervailing strategies, deliberate service differentiation and coordinated capacity planning among ports, or the formation of a unified national shipping alliance, while acknowledging the practical limitations of each.展开更多
THE Hainan Free Trade Port(FTP)officially launched island-wide special customs operations on December 18,2025.One month in,a reporting team from China International Communications Group(CICG)conducted an exclusive int...THE Hainan Free Trade Port(FTP)officially launched island-wide special customs operations on December 18,2025.One month in,a reporting team from China International Communications Group(CICG)conducted an exclusive interview with Feng Fei,secretary of the Hainan Provincial Committee of the Communist Party of China(CPC)and chairman of the Standing Committee of the Hainan Provincial People’s Congress.展开更多
On December 18,2025, Hainan Free Trade Port (Hainan FTP) officially began islandwide special customs operations.Although only two months have passed since this landmark step, the shift is already visible everywhere—f...On December 18,2025, Hainan Free Trade Port (Hainan FTP) officially began islandwide special customs operations.Although only two months have passed since this landmark step, the shift is already visible everywhere—from the bustling flow of international passengers at Haikou Meilan International Airport to the steady stream of cargo vessels calling at Yangpu Port, and even in the sustained attention investors are paying to “Hainan-related” stocks.Together, these signals point to one clear conclusion:China’s largest special economic zone has entered a new phase of development.展开更多
The Hainan FTP is a game changer and those who seize the opportunities it offers early will reap substantial benefits.AS it provides a vital new model for China’sinternational trade and logistics,theHainan Free Trade...The Hainan FTP is a game changer and those who seize the opportunities it offers early will reap substantial benefits.AS it provides a vital new model for China’sinternational trade and logistics,theHainan Free Trade Port(Hainan FTP)stands out from similar opening-up initiatives.展开更多
Preferential policies,efficient government,and a favorable geographical location...a multitude of factors make the Hainan FTP a promising land for businesses.SOON after the Hainan Free Trade Port(FTP)launched special ...Preferential policies,efficient government,and a favorable geographical location...a multitude of factors make the Hainan FTP a promising land for businesses.SOON after the Hainan Free Trade Port(FTP)launched special customs operations at the end of 2025,private enterprises operating at its Yangpu Port began to benefit substantially from the favorable policies and surging growth momentum in the region.While riding on an ocean of opportunities opened by the FTP,local businesses are bringing the island to a new level of prosperity,and thriving together with it as a community of shared future.展开更多
摘要This article we mainly analyse the source codes of the linux,we can modify the proper file that related to the architect,wealso use the cross-compile tools arm-linux-gcc and we eventually port to the processor.S3C2410,this article’s method is easy and it is suitable for practical applications.
基金supported by the National Key Research and Development Program of China(No.2024YFC3712301)。
摘要As pivotal interfaces of maritime trade and urban-industrial systems,ports are increasingly challenged by their dual roles in enabling economic activity and generating air pollution and carbon emissions.This review provides a structured assessment of emission characteristics,mitigation technologies,and governance strategies aimed at port sustainability.It first delineates the primary emission sources—ships,cargo handling equipment,land transport,and on-site energy systems—focusing on key pollutants such as NOx,SO2,PM2.5,VOCs,and CO2.Synergistic technological pathways are then examined,including ship-based alternatives such as shore power,low-carbon fuels,and carbon capture and storage,along with port-side electrification,operational optimization,and integration of renewables.The review further assesses how regulatory frameworks—encompassing mandatory rules,market-based incentives,and international cooperation—govern the adoption and scaling of these technologies.Drawing on case studies from both developed and developing economies,the review identifies enabling factors including institutional coordination and technological readiness,alongside persistent barriers such as fragmented governance and limited financing.It concludes by outlining four strategic imperatives:accelerating scalable technologies diffusion,enhancing multilevel governance alignment,embedding port transitions within broader urban and industrial systems,and promoting equity through just transition frameworks.By integrating technical and institutional dimensions,the review provides a forward-looking roadmap for low-carbon,clean,and resilient port development.
基金financially supported by the National Natural Science Foundation of China(Grant No.52071306)the Natural Science Foundation of Zhejiang Province(Grant No.LZ22E090003).
摘要This study developed a two-dimensional storm surge model for hydrodynamic simulations in port engineering,utilizing an improved Local Time-Stepping(LTS)scheme.The model implements unstructured triangular grids with localized refinement within the engineering area,enhancing computational efficiency through the improved LTS algorithm.Implementation in a Qingdao port demonstrated that,compared with the conventional Global Time-Stepping(GTS)scheme,the LTS approach enhanced computational efficiency by 5.08 times and 3.30 times before and after construction,respectively,reducing computation time by 30−40 hours.Validation results confirm the model’s high accuracy under both astronomical tide and storm surge conditions.Simulations of storm surges during Severe Typhoon Muifa(1109)and Super Typhoon Lekima(2019)further validated the model’s effectiveness.The results indicated that the overall simulation trend of storm surge aligned closely with the observed patterns of water level fluctuations,yielding highly satisfactory results.The Root Mean Square Error(RMSE)for Typhoon Lekima was 0.0083 m,while for Typhoon Muifa it was 0.0059 m,further demonstrating the model’s accuracy and applicability.The study analyzed the storm surge flow field post-construction using Typhoon Lekima as a case study.This research demonstrates the LTS model’s significant potential and promising applications in storm surge simulations and marine port construction.
摘要As the number of electric vehicles continues to rise,pressure on charging infrastructure grows increasingly intense.Mobile charging technology,with its flexibility and deployability,has emerged as an effective solution.Within this technology,charging robots or vehicles must autonomously locate and dock with charging ports.Consequently,precise and stable charging port recognition constitutes both a prerequisite and the core bottleneck for achieving automated operations in mobile charging systems.However,in practical scenarios,charging ports often prove difficult to detect reliably due to factors such as physical obstructions,variations in lighting,and long shooting distances.To address this,this paper proposes CP-YOLO,an improved YOLOv9-based detection model for electric vehicle charging ports.The method first incorporates Space-to-Depth Convolution(SPDConv)into the backbone network,reorganising spatial dimensions into channel dimensions to preserve fine-grained features,thereby providing high-fidelity detail for subsequent processing.Secondly,it constructs the C2f-MLKA module,which fuses multi-level features and enhances contextual modelling capabilities through large-kernel attention and gating mechanisms.Finally,introducing Spatially Adaptive Feature Modulation(SAFM)in the neck network enables multi-scale feature fusion and dynamic adjustment of feature weights in critical regions.This forms a progressive mechanism—detailed fidelity,enhanced contextual understanding,and spatial adaptability—to elevate the model’s recognition performance.Experimental results demonstrate that compared to the original YOLOv9 model,Mean Average Precision(mAP)improves by 3.8%,outperforming Faster Region-based Convolutional Neural Networks(R-CNN),EfficientDet and Real-Time Detection Transformer(RT-DETR)by 22.8%,18.8%and 10%,respectively,and surpasses other YOLO variants by 12.6%,8.0%,3.8%,5.5%,7.3%and 9.4%,respectively.This effectively enhances detection accuracy for charging ports in complex environments,offering practical reference value for mobile charging technology applications.
基金financially supported by the National Key Research and Development Program of China(Grant No.2022YFC2806604)the National Natural Science Foundation of China(Grant No.52101359)+1 种基金the Postgraduate Research&Practice Innovation Program of Jiangsu Province(Grant No.KYCX24_4069)the Jiangsu Marine Technology Innovation Center“Key Technology Research and Development of Deep-sea Polymetallic Nodule Seafloor Mining Equipment”(Grant No.MTIC-2023-IRD-0001).
摘要The negative pressure near-wall particle collection method employs suction flow to circulate the medium along the inner wall of the collection port,creating flow separation that affects flow characteristics and particle forces.This investigation utilizes a CFD simulation method,validated through Zhao’s experiments,and implements a“circular pipe suction model”to examine how collection port parameters-specifically wall thickness and shape-influence the flow field and particle collection efficiency across different Reynolds numbers.The findings demonstrate that wall thickness and port shape substantially affect flow separation,as evidenced by recirculation zones that compress the flow and modify the particle force coefficient.Typically,greater wall thickness results in decreased particle force coefficients,with variations up to 15%.Moreover,collection ports with inward-pointing sharp angles demonstrate the highest particle force coefficients,while those with outward-pointing angles show the lowest,exhibiting variations up to 23%.These results indicate that optimizing collection port design through wall thickness and shape modifications can improve particle collection efficiency,enhancing practical applications.
基金the National Key Research and Development Program of China(No.2024YFB2606303)。
摘要Flow battery energy storage(FBES)provide a flexible storage for low-carbon port integrated energy systems(PIES).To improve renewable energy accommodation and overcome the high cost and low utilization of decentralized storage,this paper proposes a shared flow battery energy storage(SFBES)framework for multi-port integrated energy systems.A bi-level collaborative optimization model is developed,where the upper-level optimizes storage power and energy capacities,and the lower-level coordinates renewable generation,quay crane(QC),electric truck(ET),and multi-energy conversion units.The model is reformulated as a single-level MILP using KKT conditions.
基金supported by the National Key Research and Development Program of China(2022YFB4700904 to Wang L)the Changfeng Talent Development Program at the First Affiliated Hospital of Naval Medical University(2023CF001 to Wang L)+2 种基金the Shanghai Priority Research Center Construction Project(2022ZZ01011 to Wang L)the National Natural Science Foundation of China(82372883 to Wang L)the Shanghai Shenkang Hospital Development Center Funding:the Renal Cancer Comprehensive Oncology Center Project(SHDC22024222 to Wang L).
摘要Telesurgery,or remote surgery,involves performing operations on a patient located in a different geographical location,often separated by hundreds or even thousands of kilometers[1].Advances in robotic systems and 5G communication technology have enabled the successful execution of complex procedures,ensuring safety and precision.Previous reports of human robotic telesurgery have exclusively involved multi-port systems,with procedures performed across general surgery,cardiology,and otolaryngology[[2],[3],[4]].Commonly reported cases include cholecystectomy,hemicolectomy,percutaneous coronary intervention,and transoral robotic surgery,using network technologies with transmission distances ranging from 15 km to 14000 km and latency values between 28 ms and 280 ms[[2],[3],[4],[5]].Telesurgery enhances accessibility,while single-port surgery minimizes patient trauma,representing two pivotal directions in robotic surgery.Single-port robotic surgery,using a single incision,reduces invasiveness,leading to less postoperative pain,faster recovery,and improved cosmetic outcomes.
基金supported by State Grid Sichuan Electric Power Company science and technology project“Research on Key Technologies for Reclosing of High-Ratio New Energy Grid Connection Lines.”(Program No:52199723002Q).
摘要The integration of a high proportion of renewable energy introduces significant challenges for the adaptability of traditional fault nature identification methods.To address these challenges,this paper presents a novel fault nature identification method for renewable energy grid-connected interconnection lines,leveraging wavelet packet decomposition and voltage waveform time-frequency morphology comparison algorithms.First,the paper investigates the harmonic injection mechanism during non-full-phase operation following fault isolation in photovoltaic renewable energy systems,and examines the voltage characteristics of faulted phases in renewable energy scenarios.The analysis reveals that substantial differences exist in both the time and frequency domains of phase voltages before and after the extinction of transient faults,whereas permanent faults do not exhibit such variations.Building on this observation,the paper proposes a voltage time-frequency feature extraction method based on wavelet packet decomposition,wherein low-frequency waveform components are selected to characterize fault features.Subsequently,a fault nature identification method is introduced,based on a voltage waveform time-frequency morphology comparison.By employing a windowing technique to quantify waveform differences before and after arc extinction,this method effectively distinguishes between permanent and transient faults and accurately determines the arc extinction time.Finally,a 220 kV renewable energy grid connection line model is developed using PSCAD for verification.The results demonstrate that the proposed method is highly adaptable across various fault locations,transition resistances,and renewable energy control strategies,and can reliably identify fault nature in renewable energy grid connection scenarios.
基金support from the National Natural Science Foundation of China (Grant No.12474101)support from the National Natural Science Foundation of China (Grant Nos.52272202 and W2421027)support from the National Natural Science Foundation of China (Grant No.52501307)。
摘要New electronic devices based on the physical properties of electrically driven skyrmions are promising for logic computing and nonvolatile memory applications.However,achieving efficient and practical compute-storage integration remains challenging owing to the structural complexity,limited functionality,and low flexibility observed in most skyrmion-based devices.In this study,we designed a novel device architecture that integrates seven basic logic gates into a unified physical structure.Their operation can be enabled by physical mechanisms,such as spin-orbit torque,spin-transfer torque,skyrmion-edge repulsions,and skyrmion-skyrmion interactions.Furthermore,by incorporating voltage-controlled magnetic anisotropy,the device achieved multi-input capability and reconfigurability functionality.Ultralow power consumption(<1 fJ/bit per logic function)and extremely high logic density were achieved.Significantly,the compatibility of this nanotrack design with existing skyrmion racetrack memory paves the way for advanced in-memory computing in spintronic architectures.
摘要This paper proposes a stochastic optimization model that considers not only the uncertainties in wave and vessel arrival times but also sedimentation and tidal occurrence.Those factors impact the vessel’s operational cost,influencing the seaport’s competitiveness.Therefore,seaport operators need to decide the reference vessel size,dredging maintenance actions,and infrastructure required to ensure the smooth operation of the vessel.The optimization model is solved by invoking a variant of the genetic algorithm(GA).Case studies based on actual seaports in Indonesia are conducted to illustrate the model’s application and results clearly.It was found that the uncertainties of wave and vessel arrival are responsible for deviations in expected operational costs,while increasing infrastructure costs minimizes these deviations and reduces the expected operational costs.
摘要Established in 2019,the Shandong Port Group(SPG)comprises four port groups(Qingdao Port,Rizhao Port,Yantai Port,and Bohaiwan Port)and 12 business segments.SPG connects 3,345 kilometers of coastline within Shandong Province.Its cargo throughput has consistently ranked first globally for many years,and its container volume growth ranks second globally,forming a port cluster covering the entire industrial chain.
摘要BACKGROUND Robotic liver resection has progressively pushed the boundaries of minimally invasive hepatopancreatobiliary surgery.The recently introduced da Vinci singleport(SP)system enables placement of a multiple-channel cannula through a single 2.5-4 cm incision and aims to limit parietal trauma while maintaining the advantages of current multi-port robotic platforms.Here,we report the first Italian case of hepatic resection performed using this platform and summarize the existing literature.CASE SUMMARY A 51-year-old woman with a history of breast cancer presented with a 15-mm metastasis in segment II of the liver.Following multidisciplinary assessment,a robotic left lateral sectionectomy was performed using a supra-umbilical 4-cm incision.Docking time was 20 min,and the total operative time was 255 min,with 50 mL of blood loss and 30 min of intermittent hepatic pedicle clamping.No drains were placed.Postoperative pain was≤1 on the Visual Analog Scale,and the patient was discharged on postoperative day 3 without any complications.Histology showed a 12-mm breast cancer metastasis with 2-mm clear margins and good cosmesis.CONCLUSION According to published case series and comparative studies,SP robotic liver resections are technically feasible and safe,with reduced postoperative pain,shorter hospital stays,and improved cosmesis.However,current evidence is limited to selected minor resections,and longer follow-up is necessary to validate the oncological outcomes.
摘要Shandong Port Group(SPG),which was established in August 2019,regards standardization as the cornerstone of modern enterprise management,and vigorously implements the standardization innovation strategy.Its standardization work mainly focuses on the following four aspects.
摘要The final and award ceremony of the International Standardization Youth Star Competition 2025 were held in Qingdao on November 22-23.The competition attracted 236 teams nationwide who demonstrated great enthusiasm for participating in the standardization undertaking.The competition followed the mode of“the industry puts forward questions,and the academia provides solutions”.Shandong Port Group Co.,Ltd.,Contemporary Amperex Technology Co.,Ltd.(CATL),Huawei Technologies Co.,Ltd.,and Beijing Zhongbiaolvjian Engineering Design and Research Institute Co.,Ltd.set up themed tracks respectively,and competitors developed standard proposals for the corresponding themes.
摘要A roundtable focusing on the coordinated development of institutional innovation and consumption governance in pilot free trade zones(ports)was held during the thematic forum,which was presided over by Lin Gang,Deputy Director-General of the Hainan Administration for Market Regulation.
摘要Port automation is transforming global maritime trade, yet its effect on the balance of bargaining power between ports and shipping alliances remains unclear. Using Shanghai Yangshan Deep-Water Port as a case study, this essay examines how automation-driven efficiency gains interact with market structure to shape port bargaining power in the short and long run. Ports operate in a moderately competitive, technology-intensive market, while shipping alliances form a tight oligopoly that controls the majority of global container capacity. In the short run, automation lowers costs and concentrates traffic at early-adopting ports, temporarily strengthening their negotiating position. However, as automation diffuses industry-wide, cost advantages erode, competition intensifies, and involution sets in: throughput rises while per-unit margins stagnate. Consequently, the surplus generated by efficiency gains increasingly accrues to shipping alliances rather than to ports. The essay concludes that automation alone does not guarantee ports greater economic power, and proposes two countervailing strategies, deliberate service differentiation and coordinated capacity planning among ports, or the formation of a unified national shipping alliance, while acknowledging the practical limitations of each.
摘要THE Hainan Free Trade Port(FTP)officially launched island-wide special customs operations on December 18,2025.One month in,a reporting team from China International Communications Group(CICG)conducted an exclusive interview with Feng Fei,secretary of the Hainan Provincial Committee of the Communist Party of China(CPC)and chairman of the Standing Committee of the Hainan Provincial People’s Congress.
摘要On December 18,2025, Hainan Free Trade Port (Hainan FTP) officially began islandwide special customs operations.Although only two months have passed since this landmark step, the shift is already visible everywhere—from the bustling flow of international passengers at Haikou Meilan International Airport to the steady stream of cargo vessels calling at Yangpu Port, and even in the sustained attention investors are paying to “Hainan-related” stocks.Together, these signals point to one clear conclusion:China’s largest special economic zone has entered a new phase of development.
摘要The Hainan FTP is a game changer and those who seize the opportunities it offers early will reap substantial benefits.AS it provides a vital new model for China’sinternational trade and logistics,theHainan Free Trade Port(Hainan FTP)stands out from similar opening-up initiatives.
摘要Preferential policies,efficient government,and a favorable geographical location...a multitude of factors make the Hainan FTP a promising land for businesses.SOON after the Hainan Free Trade Port(FTP)launched special customs operations at the end of 2025,private enterprises operating at its Yangpu Port began to benefit substantially from the favorable policies and surging growth momentum in the region.While riding on an ocean of opportunities opened by the FTP,local businesses are bringing the island to a new level of prosperity,and thriving together with it as a community of shared future.