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Material platforms for solid-state single-photon sources:wide bandgap semiconductors 认领 引用
1
作者 Junhua Meng Yiming Shi Xingwang Zhang 《Journal of Semiconductors》 EI CAS CSCD 2026年第6期6-11,共6页
Single-photon sources are essential components for scalable quantum information technologies,with applications spanning quantum communication,quantum key distribution,quantum computing,and quantum sensing.Color center... Single-photon sources are essential components for scalable quantum information technologies,with applications spanning quantum communication,quantum key distribution,quantum computing,and quantum sensing.Color centers in the solid state,such as optically active point defects,are promising candidates for the next-generation single-photon sources.Their atom-like properties enable the emission of single photons with high efficiency,purity,and indistinguishability,while their solid-state nature allows for integration into scalable quantum photonic devices. 展开更多
关键词 wide bandgap semiconductors material platforms quantum key distribution quantum information technologieswith single photon sources quantum communicationquantum key distributionquantum computingand optically active point defectsare quantum sensingcolor centers
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Research on the Optimisation of Natural Gas Layered Scheduling for Offshore Platforms Based on Improved GA and MPC 认领 引用
2
作者 Xiaoguang Zhang Xiaoyong He +2 位作者 Yutong Zhong Xiaoyong Gao Wenxin Zhan 《Digital Twins and Applications》 EI 2026年第1期204-221,共18页
Natural gas scheduling on offshore platforms is essential for ensuring safe and economically efficient production.Traditional control methods,such as PID,often exhibit limited robustness and slow response under nonlin... Natural gas scheduling on offshore platforms is essential for ensuring safe and economically efficient production.Traditional control methods,such as PID,often exhibit limited robustness and slow response under nonlinear dynamics,disturbances and fluctuating demand.This paper proposes a hierarchical scheduling optimisation framework that integrates an improved genetic algorithm(GA)with model predictive control(MPC),aiming to achieve long-term global optimisation together with real-time dynamic control.The improved GA incorporates adaptive crossover and mutation rates,simulated binary crossover(SBX),polynomial mutation and an elitism strategy to enhance search efficiency and avoid premature convergence.A simulation-driven digital-twin prototype is constructed using representative operating conditions-normal,high-demand,low-demand and fault-to evaluate flow and pressure regulation performance.The optimisation objective minimises total operating cost subject to physical feasibility,safety limits and equipment performance constraints,with decision variables including valve openings and compressor speeds.The GA generates hourly reference trajectories for global scheduling,whereas MPC ensures minute-level tracking under disturbances and operational variability.Comparative results demonstrate that the hierarchical GA+MPC approach outperforms standalone MPC,reducing operating cost by 9.4%,accelerating convergence by 34.2%and lowering steady-state tracking error by 18.6%.Relative to PID control,convergence speed improves by 43.5%and steady-state error decreases by 35.1%.In addition,the improved GA achieves a 65.6%reduction in convergence generations compared with the traditional GA,confirming its superior efficiency and robustness.These results,validated within the simulation-driven digital-twin prototype,highlight the hierarchical architecture's ability to combine global optimisation with real-time dynamic control,demonstrating its practicality,robustness and potential for broader application in intelligent offshore energy systems. 展开更多
关键词 digital twins hierarchical control improved genetic algorithms model predictive control natural gas dispatching offshore platforms
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Eight Core Trends:From Trade Show Floors to Ecosystem Platforms 认领 引用
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作者 Lan Xin 《China's Foreign Trade》 2026年第1期11-14,共4页
At a critical juncture of global industrial transformation and economic recovery,the 2026 China Expo Forum for International Cooperation(CEFCO)recently concluded in Wuhan.Dubbed the“Davos of the exhibition industry”... At a critical juncture of global industrial transformation and economic recovery,the 2026 China Expo Forum for International Cooperation(CEFCO)recently concluded in Wuhan.Dubbed the“Davos of the exhibition industry”,the forum,attracted more than 600 exhibition professionals from over 20 countries and regions. 展开更多
关键词 trade show floors industrial transformation ecosystem platforms wuhan China expo forum international cooperation davos exhibition industry economic recovery cefco
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New surgical robotic platforms in China and their applications in urologic surgeries 认领 引用 被引量：2
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作者 Hongkai Wang Dingwei Ye 《Asian Journal of Urology》 CAS CSCD 2025年第2期134-138,共5页
1.Introduction Due to the continuous progress in surgical methodologies and the swift evolution of surgical tools,minimally invasive procedures have emerged as the dominant approach in urologic oncology surgeries.Nota... 1.Introduction Due to the continuous progress in surgical methodologies and the swift evolution of surgical tools,minimally invasive procedures have emerged as the dominant approach in urologic oncology surgeries.Notably,robot-assisted surgery(RAS)has led to its extensive adoption in the surgical management of urinary system tumors due to its enhanced maneuverability,precision in suturing,and anastomotic capabilities. 展开更多
关键词 anastomotic capabilities surgical robotic platforms minimally invasive procedures surgical management urinary system tumors robot assisted surgery surgical toolsminimally invasive procedures urinary system tumors surgical methodologies
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Strategies for Closed-Loop Quality Control at Construction Sites Based on Digital Platforms 认领 引用
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作者 DENG Xihao 《外文科技期刊数据库（文摘版）工程技术》 2026年第7期118-122,共5页
Aiming at prominent problems in construction site quality management such as delayed information transmission, difficulties in tracing concealed working procedures and scattered quality data, as well as the limitation... Aiming at prominent problems in construction site quality management such as delayed information transmission, difficulties in tracing concealed working procedures and scattered quality data, as well as the limitation of traditional manual inspection modes failing to meet refined quality management requirements for large and complex projects, this paper constructs a digital closed-loop control model integrating Internet of Things (IoT), BIM, digital twin and intelligent sensing technologies centering on the core demand for dynamic quality control at construction sites. A full-process quality control chain of "data collection – status analysis – abnormality early warning – rectification feedback" is established. Taking a large prefabricated residential project as the application carrier, engineering verifications including system platform deployment, multi-source data linkage and digital tracing of concealed works are completed. The results show that this model can significantly shorten the response time to quality problems, raise the pass rate of on-site measurement and inspection, reduce the missing inspection rate of concealed works, and improve the completion rate of closed-loop quality rectification. It can provide replicable technical paths for dynamic quality control at construction sites. 展开更多
关键词 digital platform construction site quality management
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Recent progress in triboelectric platforms:engineering materials to industrial applications from the perspective of manufacturing 认领 引用 被引量：2
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作者 Yoonsang Ra Minjun Song +9 位作者 Donghan Lee Sunmin Jang Yu-seop Kim Joonmin Chae Sumin Cho Dongik Kam Donghyun Lee Gibeom Lee Younghoon Lee Dongwhi Choi 《International Journal of Extreme Manufacturing》 SCIE EI CAS CSCD 2025年第3期232-258,共27页
With the growing importance of wearable and portable electronics in modern society and industry,researchers from all over the world have reported on advances in energy harvesting and self-powered sensing technologies.... With the growing importance of wearable and portable electronics in modern society and industry,researchers from all over the world have reported on advances in energy harvesting and self-powered sensing technologies.The current review discusses recent developments in triboelectric platforms from a manufacturing perspective,including material,design,application,and industrialization.Manufacturing is an essential component of both industry and technology.The use of a proper manufacturing process enables cutting-edge technology in a lab-scale stage to progress to commercialization and popularization with scalability,availability,commercial advantage,and consistent quality.Furthermore,much literature has emphasized that the most powerful advantage of the triboelectric platform is its wide range of available materials and simple working mechanism,both of which are important characteristics in manufacturing engineering.As a result,different manufacturing processes can be implemented as needed.Because the practical process can have a synergetic effect on the fundamental development,resulting in the growth of both,the development of the triboelectric platform from the standpoint of manufacturing engineering can be further advanced.However,research into the development of a productive manufacturing process is still in its early stages in the field of triboelectric platforms.This review looks at the various manufacturing technologies used in previous studies and discusses the potential benefits of the appropriate process for triboelectric platforms.Given its unique strength,which includes a diverse material selection and a simple working mechanism,the triboelectric platform can use a variety of manufacturing technologies and the process can be optimized as needed.Numerous research groups have clearly demonstrated the triboelectric platform's advantages.As a result,using appropriate manufacturing processes can accelerate the technological advancement of triboelectric platforms in a variety of research and industrial fields by allowing them to move beyond the lab-scale fabrication stage. 展开更多
关键词 triboelectric platform mechanical design functional material manufacturing process industrial application
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Overview of the Recent Developments in Hybrid Floating Wind-Wave Platforms 认领 引用 被引量：2
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作者 T.S.Hallak C.Guedes Soares 《哈尔滨工程大学学报（英文版）》 CSCD 2025年第1期98-119,共22页
This paper presents an overview of the recent developments in hybrid wind-wave energy.With the focus on floating concepts,the possible configurations introduced in the literature are categorized and depicted,and the m... This paper presents an overview of the recent developments in hybrid wind-wave energy.With the focus on floating concepts,the possible configurations introduced in the literature are categorized and depicted,and the main conclusions obtained from the references are summarized.Moreover,offshore wind and wave resources are discussed in terms of complementarity and supplementarity,offering a new perspective to developing hybrid wind-wave energy systems that look for synergies not limited to maximizing power output.Then,the feasibility of the concepts under development is discussed in detail,with focus on technical feasibility,dynamic feasibility and limitations of the methods employed.The hybrid configurations that surpassed the experimental validation phase are highlighted,and the experimental results are summarized.By compiling more than 40 floating wind turbine concepts,new relations are drawn between power,wind turbine dimensions,platforms’draft and displacement,which are further related to the payload allowance of the units to accommodate wave devices and onboard power take-off systems.Bearing in mind that it is a challenge to model the exact dynamics of hybrid floating wind-wave platforms,this paper elucidates the current research gaps,limitations and future trends in the field.Lastly,based on the overview and topics discussed,several major conclusions are drawn concerning hybrid synergies,dynamics and hydrodynamics of hybrid platforms,feasibility of concepts,among other regards. 展开更多
关键词 Offshore renewable energy Floating offshore wind turbine Wave energy converter Floating platform Technology development
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Accessing Online and Remote Learning Platforms in Kenyan Remote Areas During COVID-19 Pandemic 认领 引用
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作者 Florence Deya Jane Rarieya 《Sino-US English Teaching》 2025年第4期119-128,共10页
Online learning has taken root and with the advancement in technology more and more educators are embracing online learning.During the COVID-19 pandemic,with total shut down of face-to-face learning,the Kenyan governm... Online learning has taken root and with the advancement in technology more and more educators are embracing online learning.During the COVID-19 pandemic,with total shut down of face-to-face learning,the Kenyan government had moved learning online and remotely.To find out on how learners in remote areas were experiencing learning during the COVID-19 pandemic,a study was carried out using rapid ethnography design.Five final year secondary students were sampled.Data was collected through interviews,observations,and document analysis.This paper reports on the findings of online and remote learning platforms,which were available,accessed,and preferred by the learners in remote areas of Kenya during the pandemic.It also highlights the importance of e-learning platforms in addressing learning experiences and success. 展开更多
关键词 online platforms digital learning emergency learning digital literacy education technology
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Research on Purchasing Behavior on E-commerce Platforms of Low-income People of Vietnam 认领 引用
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作者 Pham Tu Linh Vu Thi Tung Chi +1 位作者 Nguyen Thi Minh Nguyet Tran Van Trung 《Economics World》 2025年第1期27-38,共12页
The purpose of this study is to analyze factors affecting the purchasing behavior of low-income Vietnamese on e-commerce platforms.700 questionnaires were dispersed among universities,coffee shops,and Facebook communi... The purpose of this study is to analyze factors affecting the purchasing behavior of low-income Vietnamese on e-commerce platforms.700 questionnaires were dispersed among universities,coffee shops,and Facebook community groups in Vietnam.Respondents to the questionnaires were consumers of those places in Vietnam,which were randomly selected.Finally,SEM analysis was used on the data to test the hypotheses of the study.The study identified that“Subjective norms”and“Consumer attitudes”have no effect on shopping behavior on e-commerce platforms,while“Perceived behavioral control”is most affected and“Perceived risks”are least affected on shopping behavior. 展开更多
关键词 B2C e-commerce e-commerce platforms low-income people purchasing behavior
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Monitoring and Data Analysis of Mooring Tension for Floating Platforms 认领 引用
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作者 YANG Hua−wei ZHENG Qing−xin +2 位作者 XU Chun YANG Qi−fan JIANG Zhen−tao 《船舶力学》 EI CSCD 北大核心 2025年第6期941-951,共11页
Mooring cable tension is a crucial parameter for evaluating the safety and reliability of a floating platform mooring system.The real-time mooring tension in an actual marine environment has always been essential data... Mooring cable tension is a crucial parameter for evaluating the safety and reliability of a floating platform mooring system.The real-time mooring tension in an actual marine environment has always been essential data that mooring system designers aim to acquire.To address the need for long-term continuous monitoring of mooring tension in deep-sea marine environments,this paper presents a mooring cable tension monitoring method based on the principle of direct mechanical measurement.The developed tension monitoring sensors were installed and applied in the mooring system of the"Yongle"scientific experimental platform.Over the course of one year,a substantial amount of in-situ tension monitoring data was obtained.Under wave heights of up to 1.24 m,the mooring tension on the floating platform reached 16.5 tons.Through frequency domain and time domain analysis,the spectral characteristics of mooring tension,including waveinduced force,slow drift force,and mooring cable elastic restoring force,were determined.The mooring cable elastic restoring force frequency was approximately half of that of the wave signal.Due to the characteristics of the hinge connection structure of the dual module floating platform,under some specific working conditions the wave-induced force was the maximum of the three different frequency forces,and restoring force was the smallest. 展开更多
关键词 floating platform mooring tension tension monitoring sensor wave frequency force drift force
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Multi-frequency Jitter Detection and Modeling for Remote Sensing Satellite Platforms Using Non-collinear TDI CCD 认领 引用
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作者 ZHU Ying LI Xiaoqian +3 位作者 DONG Yanling GUI Yuhao LIAO Xiangjun ZHANG Xin 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI CSCD 2025年第5期601-614,共14页
The advancement of imaging resolution has made the impact of multi-frequency composite jitter in satellite platforms on non-collinear time delay and integration(TDI)charge-coupled device(CCD)imaging systems increasing... The advancement of imaging resolution has made the impact of multi-frequency composite jitter in satellite platforms on non-collinear time delay and integration(TDI)charge-coupled device(CCD)imaging systems increasingly critical.Moreover,the accuracy of jitter detection is constrained by the limited inter-chip overlap region inherent to non-collinear TDI CCDs.To address these challenges,a multi-frequency jitter detection method is proposed,achieving sub-pixel level error extraction.Furthermore,a multi-frequency jitter fitting approach utilizing a scale-adjustable sliding window is introduced.For composite multi-frequency jitter,spectral analysis decomposes the relative jitter error curve,while the scale-adjustable sliding window enables frequency-division fitting and modeling.Validation experiments using Gaofen-8(GF-8)remote sensing satellite imagery detected jitter at 0.65,20,and 100 Hz in the cross-track direction and at 0.5,100,and 120 Hz in the along-track direction,demonstrating the method’s precision in detecting platform jitter at sub-pixel accuracy(<0.2 pixels)and its efficacy in fitting and modeling for non-collinear TDI CCD imaging systems subject to multi-frequency jitter. 展开更多
关键词 remote sensing image matching platform jitter non-collinear TDI CCD multi-frequency jitter fitting
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Seismic response mitigation of offshore jacket platforms using a novel bidirectional tuned liquid column gas damper 认领 引用
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作者 Mohamadhosein Mohasel Mohammad Reza Chenaghlou Ahmad Reza Mostafa Gharabaghi 《Theoretical & Applied Mechanics Letters》 EI CAS CSCD 2025年第5期508-521,共14页
This study investigates the seismic response mitigation of an offshore jacket platform via a novel damping system,the bidirectional tuned liquid column gas damper(BTLCGD).To efficiently model the complex platform stru... This study investigates the seismic response mitigation of an offshore jacket platform via a novel damping system,the bidirectional tuned liquid column gas damper(BTLCGD).To efficiently model the complex platform structure,an equivalent single degree of freedom approach was employed.Since the mass contribution of the first mode of the platform is more than 90%,this simplification significantly reduces the computational burden while maintaining accuracy.Therefore,this structure was modeled and analyzed on a scale of 1 to 36 using the Froudian law.To address the limitations of conventional tuned liquid column gas dampers(TLCGDs),which are susceptible to the directionality of seismic excitations,BTLCGD was proposed.This innovative damper is designed to operate effectively in two orthogonal directions,thereby improving seismic performance.Through numerical simulations,the performance of both TLCGD and BTLCGD was evaluated under seismic loading.The results demonstrated that BTLCGD significantly outperforms TLCGD in terms of reducing structural responses,particularly in the direction where TLCGD is ineffective.Furthermore,BTLCGD offers advantages in terms of installation and space requirements.The results of this research offer valuable perspectives into the design and implementation of effective damping systems for offshore structures,contributing to enhanced structural integrity and safety. 展开更多
关键词 Offshore jacket platform Structural control Bidirectional tuned liquid column gas damper Response time history
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Hydrogen-Methane Blend Storage in Depleted Reservoirs:An Option for Reusing Decommissioned Offshore Platforms 认领 引用
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作者 Anna Chiara Uggenti Giorgio Rech +5 位作者 Raffaella Gerboni Gianmario Ledda Amedeo Aliberti Claudia Vivalda Emanuela Bruno Andrea Carpignano 《Fluid Dynamics & Materials Processing》 EI 2025年第4期757-782,共26页
The paper presents an innovative approach to studying the reuse of a decommissioned natural gas production platformfor the seasonal storage and extraction of a hydrogen-methane(H2-CH4)mixture froma depleted reservoir.... The paper presents an innovative approach to studying the reuse of a decommissioned natural gas production platformfor the seasonal storage and extraction of a hydrogen-methane(H2-CH4)mixture froma depleted reservoir.The reuse plan involves removing outdated equipment from the platform’s decks while retaining essential components such as wellheads and separators.Exploiting a depleted reservoir for the injection of an H2-CH4 mixture requires a thorough understanding of its specific characteristics.This paper focuses on the engineering approach adopted in the basic design phase for such a conversion,providing recommendations and HSE guidelines.Given the hazardous nature of substances like hydrogen in the gas mixture,the paper also examines potential risk scenarios,particularly those involving containment loss.A qualitative and quantitative assessment of these risks is conducted to evaluate their impact on the structure and equipment.The results of this assessment serve as a foundation for later studies on layout optimization and domino effect prevention.Additionally,some critical scenarios are simulated using an innovative approach known as the Source Box Accident Model(SBAM),which was proposed in previous works.SBAM leverages Computational Fluid Dynamics(CFD)but decouples the accidental phenomenon into a release phase and a dispersion phase.This method overcomes the challenges conventional CFD tools face in assessing congested plant configurations,providing more precise estimations of gas cloud behavior.The simulation results indicate that the released gas remains within the platform deck domain,and the flammable cloud is significantly smaller than what traditional,simplified tools predict. 展开更多
关键词 Reuse H2+CH4mixtures offshore platform conversion safety temporary storage computational fluid dynamics(CFD)
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Tentative exploring the construction of experimental technician team of large-scale instrument platforms in universities-Taking Peking University School of Pharmaceutical Sciences as an example 认领 引用
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作者 Yuan Wang Xun Wang 《Journal of Chinese Pharmaceutical Sciences》 CAS CSCD 2025年第4期392-399,共8页
This study examined the development of technician teams on large-scale instrument platforms in universities,using the State Key Laboratory of Natural and Biomimetic Drugs in the Peking University School of Pharmaceuti... This study examined the development of technician teams on large-scale instrument platforms in universities,using the State Key Laboratory of Natural and Biomimetic Drugs in the Peking University School of Pharmaceutical Sciences as a case study.Data were collected through questionnaire surveys and interviews conducted in 2017,followed by a questionnaire survey in 2023,offering both subjective and objective insights.The evolution of the platform’s technician team over the past 5 years was analyzed,highlighting key experiences and identifying ongoing challenges.Recommendations to enhance technician team development include recruiting skilled faculty,clearly defining job responsibilities,and refining the assessment and incentive systems. 展开更多
关键词 Large-scale instrument platform Experimental technician team Scientific research management
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The Rise of Riders:Digital Platforms,Targeted Matching,and Job Creation 认领 引用
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作者 Xu Heng Yu Yunjun Zhang Yilin 《中国经济学人（中英文）》 2025年第2期96-132,共37页
In recent years,gig economy jobs-particularly those of food delivery and ride-hailing drivers-have rapidly emerged as a significant force in the labor market,reflecting the deep integration of China’s digital and rea... In recent years,gig economy jobs-particularly those of food delivery and ride-hailing drivers-have rapidly emerged as a significant force in the labor market,reflecting the deep integration of China’s digital and real economies.This paper examines how digital platforms that support the gig economy exercise directionality and dominance in labor matching,where the platform dictates which consumers workers serve,rather than allowing independent choice.While this platform-led matching may appear to limit consumer and worker autonomy,it actually arises from the platform’s central role in information flow and its technological capabilities,serving as a foundation for the platform’s ability to create large-scale employment through cross-side network effects.Using a theoretical model that integrates digital platforms,labor markets,and product markets,the paper explores how the efficiency of targeted matching affects employment creation.In the early stages of gig economy development,when targeted matching efficiency is low,improvements in assignment efficiency lead to a net increase in gig employment,worker income,and overall social welfare.However,in the later stages,as targeted matching efficiency improves,the potential for monopoly abuse by incumbent platforms may trigger a crowding-out effect,leading to unemployment,income inequality between platforms and workers,and higher commission fees.While fostering competition within platform markets offers benefits,policymakers should avoid excessively low entry barriers,as these can negatively impact incumbent platforms’decisions regarding labor,pricing,and technology investment. 展开更多
关键词 Gig economy digital-real integration platform regulation competitive market
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Application in prestiction friction compensation for angular velocity loop of inertially stabilized platforms 认领 引用 被引量：7
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作者 Zhang Zhiyong Li Zhiqiang +2 位作者 Zhou Qingkun Zhang Lianchao Fan Dapeng 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2014年第3期655-662,共8页
To overcome the influence of the nonlinear friction on the gimbaled servo-system of an inertial stabilized platforms(ISPs)with DC motor direct-drive,the methods of modeling and compensation of the nonlinear friction a... To overcome the influence of the nonlinear friction on the gimbaled servo-system of an inertial stabilized platforms(ISPs)with DC motor direct-drive,the methods of modeling and compensation of the nonlinear friction are proposed.Firstly,the inapplicability of LuGre model when trying to interpret the backward angular displacement in the prestiction regime is observed experimentally and the reason is deduced theoretically.Then,based on the dynamic model of direct-drive ISPs,a modified LuGre model is proposed to describe the characteristic of the friction in the prestiction regime.Furthermore,the state switch condition of the three friction regimes including presliding,gross sliding and prestiction is presented.Finally,a composite compensation controller including a nonlinear friction observer and a feedforward compensator based on the novel LuGre model is designed to restrain the nonlinear friction and to improve the control precision.Experimental results indicate that compared with those of the conventional proportion-integrationdifferentiation(PID)control method and the PID plus LuGre model-based friction compensation method,the dwell-time has decreased from 0.2 s to almost 0 s,the position error decreased to 86.7%and the peak-to-peak value of position error decreased to 80%after the novel compensation controller is added.It concludes that the composite compensation controller can greatly improve the control precision of the dynamic sealed ISPs. 展开更多
关键词 Closed loop control systems Friction compensation Inertially stabilized platforms Prestiction Stiction
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A Robust Damage Detection Method Developed for Offshore Jacket Platforms Using Modified Artificial Immune System Algorithm 认领 引用 被引量：5
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作者 Mojtahedi A. Lotfollahi Yaghin M.A. +3 位作者 Hassanzadeh Y. Abbasidoust F. Ettefagh M.M. Aminfar M.H. 《China Ocean Engineering》 SCIE EI 2012年第3期379-395,共17页
Steel jacket-type platforms are the common kind of the offshore structures and health monitoring is an important issue in their safety assessment.In the present study,a new damage detection method is adopted for this ... Steel jacket-type platforms are the common kind of the offshore structures and health monitoring is an important issue in their safety assessment.In the present study,a new damage detection method is adopted for this kind of structures and inspected experimentally by use of a laboratory model.The method is investigated for developing the robust damage detection technique which is less sensitive to both measurement and analytical model uncertainties.For this purpose,incorporation of the artificial immune system with weighted attributes(AISWA)method into finite element(FE)model updating is proposed and compared with other methods for exploring its effectiveness in damage identification.Based on mimicking immune recognition,noise simulation and attributes weighting,the method offers important advantages and has high success rates.Therefore,it is proposed as a suitable method for the detection of the failures in the large civil engineering structures with complicated structural geometry,such as the considered case study. 展开更多
关键词 structural health monitoring jacket-type platforms artificial immune system FEM modal test
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Build-ups and hydrocarbon accumulation of the isolated carbonate platforms in the eastern Mediterranean 认领 引用 被引量：5
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作者 WEN Zhixin TONG Xiaoguang +6 位作者 GAO Huahua WANG Zhaoming CHEN Ruiyin SONG Chengpeng HE Zhengjun LIU Zuodong KANG Hailiang 《Petroleum Exploration and Development》 2021年第2期323-336,共14页
Based on regional geology,2D seismic and ocean drilling data,the formation of the Eratosthenes Seamount(ESM)and its surrounding isolated platforms,types of organic reefs and hydrocarbon accumulation conditions in the ... Based on regional geology,2D seismic and ocean drilling data,the formation of the Eratosthenes Seamount(ESM)and its surrounding isolated platforms,types of organic reefs and hydrocarbon accumulation conditions in the eastern Mediterranean were analyzed through fine tectonic interpretation and seismic facies study,and the future exploration targets were pointed out.The formation and evolution of the ESM and its peripheral isolated platforms are highly related to the open and close of the Neotethyan ocean.The precursors of the ESM and its peripheral isolated platforms are both horst-type fault blocks formed in the Middle Triassic-Early Jurassic intracontinental rift stage.The ESM and its peripheral isolated platforms underwent continued and inherited carbonate build-ups during the Middle Jurassic intercontinental rift stage,the Late Jurassic-Late Cretaceous Turonian passive drift stage,and Late Cretaceous Senonian-Miocene subduction stage,as well as medium-slight inversion transformation beginning in the Late Miocene Messinian caused by the closure of the Neotethyan ocean.Three types of isolated platforms formed controlled by variant paleo-tectonic settings:the first type is composed of a single patch-like reef controlled by a small-scale and narrow horst-type fault block,the second type consists of a single atoll controlled by a middle-scale and wide horst-type fault block,and the third type is comprised of multiple reef-beach complexes controlled by a large-scale and broad paleo-high.The first two types universally developed in the highs of the alternate sag-uplift structural zones on the south and west of Eratosthenes,and the third type only developed in the ESM.As a result of fluctuation of sea level,two sequences of reef build-ups,i.e.the Middle Jurassic Bajocian-Upper Cretaceous Turonian and the Miocene,developed in the ESM as well as the highs in the alternate sag-uplift structural zones on the south and west of Eratosthenes.Drillings have confirmed that the first two types of isolated platforms with a single patch-like reef and a single circle-like reef have good conditions for natural gas accumulations.The isolated platform of reef-beach complexes in the ESM also has accumulation potentials of natural gas and is worth prospecting. 展开更多
关键词 eastern Mediterranean Eratosthenes Seamount isolated carbonate platforms organic reef hydrocarbon accumulation
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Parameter identification of inertially stabilized platforms using current command design 认领 引用 被引量：4
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作者 黎志强 张智永 +1 位作者 周擎坤 范大鹏 《Journal of Central South University》 SCIE EI CAS 2013年第2期342-353,共12页
Accurate parameter identification is essential when designing controllers for inertially stabilized platforms （lSPs）. But traditional identification methods suffer from observation measurement noise and operating re... Accurate parameter identification is essential when designing controllers for inertially stabilized platforms （lSPs）. But traditional identification methods suffer from observation measurement noise and operating restrictions of ISPs. To address this issue, a novel identification method based on current command design and multilevel coordinate search （MCS） algorithm without any higher order measurement differentiations was proposed. The designed current commands were adopted to obtain parameter decoupled models with the platform operating under allowable conditions. MCS algorithm was employed to estimate the parameters based on parameter decoupled models. A comparison experiment between the proposed method and non-linear least square method was carried out and most of the relative errors of identified parameters obtained by the proposed method were below 10%. Simulation and experiment based on identified parameters were conducted. A velocity control structure was also developed with disturbance observer （DOB） for application in disturbance compensation control system of an ISR Experimental results show that the control scheme based on the identified parameters with DOB has the best disturbance rejection performance. It reduces the peak to peak value （PPV） of velocity error integral to 0.8 mrad which is much smaller than the value （10 mrad） obtained by the single velocity controller without DOB. Compared with the control scheme based on sweep model with DOB compensation, the proposed control scheme improves the PPV of velocity error integral by 1.625 times. 展开更多
关键词 parameter identification current command design multilevel coordinate search inertially stabilized platforms
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Advances in micro-nano biosensing platforms for intracellular electrophysiology 认领 引用 被引量：2
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作者 Jiajin XUE Min SHAO +1 位作者 Zhigang GAO Ning HU 《Journal of Zhejiang University-SCIENCE A》 SCIE EI CAS CSCD 2023年第11期1017-1026,共10页
The establishment of a dependable electrophysiological detection platform is paramount for cardiology and neuroscience research.In the past decade,devices based on micro and nanoscale sensing and control technologies ... The establishment of a dependable electrophysiological detection platform is paramount for cardiology and neuroscience research.In the past decade,devices based on micro and nanoscale sensing and control technologies have been developed to construct electrophysiological platforms.Their unique morphological advantages and novel processing methods offer the potential for high-throughput,high-fidelity electrical signal recording.In this review,we analyze the structure,transmembrane strategies,and electrophysiological detection methods of active/passive micro and nano sensing platforms.We also provide an outlook on their vast potential for development in light of the opportunities and challenges facing micro and nano sensing technology,with the aim of pushing for higher-level electrophysiological platform construction to meet the needs of experimental research and clinical applications. 展开更多
关键词 Intracellular electrophysiology Micro-nano biosensing platforms Cardiology and neuroscience Intracellular action potentials
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