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Data Scale, Data Scope and Platform Enterprise Performance: Insights from Digital Platform M&As
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作者 Liu Yubin Zhang Guijuan Xu Honghai 《China Economist》 2024年第5期82-106,共25页
Data is a key asset for digital platforms,and mergers and acquisitions(M&As)are an important way for platform enterprises to acquire it.The types of data obtained from intra-industry and cross-sector M&As diff... Data is a key asset for digital platforms,and mergers and acquisitions(M&As)are an important way for platform enterprises to acquire it.The types of data obtained from intra-industry and cross-sector M&As differ,as does the extent to which they interact within or between platforms.The impact of such data on corporate market performance is an important question to consider when selecting strategies for digital platform M&As.Based on our research on advertising-driven platforms,we developed a two-stage Hotelling game model for comparing the market performance effects of intra-industry M&As and cross-sector M&As for digital platforms.We carried out an empirical test using relevant data from advertising-driven digital platforms between 2009 and 2021,as well as a case study on Baidu’s M&A activities.Our research discovered that intra-industry M&As driven by“data economies of scale”and cross-sector M&As driven by“data economies of scope”are both beneficial to the market performance of platform enterprises.Intra-industry M&As have a more significant positive effect on the market performance of platform enterprises because the same types of data are easier to integrate and develop the“network effect of data scale”.From a data factor perspective,this paper reveals the inherent economic logic by which different types of M&As influence the market performance of digital platforms,as well as policymaking recommendations for all digital platforms to select M&A strategies based on data scale,data scope,and the network effect of data. 展开更多
关键词 digital platforms intra-industry M&A cross-sector M&A data economies of scale data economies of scope
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Research on the Audio Publishing of Classical Books Based on the Theory of Business Model Canvas: Taking Romance of the Three Kingdoms in Digital Audio Platforms as an Example
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作者 Ding Qin Liu Mengzhi 《Contemporary Social Sciences》 2024年第1期58-74,共17页
Visual media have dominated sensory communications for decades,and the resulting“visual hegemony”leads to the call for the“auditory return”in order to achieve a holistic balance in cultural acceptance.Romance of t... Visual media have dominated sensory communications for decades,and the resulting“visual hegemony”leads to the call for the“auditory return”in order to achieve a holistic balance in cultural acceptance.Romance of the Three Kingdoms,a classic literary work in China,has received significant attention and promotion from leading audio platforms.However,the commercialization of digital audio publishing faces unprecedented challenges due to the mismatch between the dissemination of long-form content on digital audio platforms and the current trend of short and fast information reception.Drawing on the Business Model Canvas Theory and taking Romance of the Three Kingdoms as the main focus of analysis,this paper argues that the construction of a business model for the audio publishing of classical books should start from three aspects:the user evaluation of digital audio platforms,the establishment of value propositions based on the“creative transformation and innovative development”principle,and the improvement of the audio publishing infrastructure to ensure the healthy operation and development of the digital audio platforms and consequently improve their current state of development and expand the boundaries of cultural heritage. 展开更多
关键词 Romance of the Three Kingdoms audio publishing Business Model Canvas digital audio platforms
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The Impact of Music Education on Children’s Cognitive Development:From Traditional Classrooms to Modern Digital Platforms
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作者 GONG Xinyi 《Cultural and Religious Studies》 2024年第9期595-600,共6页
Music education has long been debated for its influence on children’s cognitive development,particularly regarding their thinking methods and adaptability.This article synthesizes research data to examine the cogniti... Music education has long been debated for its influence on children’s cognitive development,particularly regarding their thinking methods and adaptability.This article synthesizes research data to examine the cognitive benefits of music instruction,including increased IQ,language proficiency,memory,and attention.Traditional face-to-face training,while personalized and socially interactive,faces limitations such as budget constraints and accessibility.Modern digital platforms offer individualized learning paths with AI-driven feedback but may lack necessary interpersonal interaction.This paper proposes a hybrid approach to music education,integrating traditional and digital methods to maximize cognitive gains.Further research is recommended to explore the implementation of these integrated learning strategies in varied educational settings. 展开更多
关键词 music education cognitive development traditional teaching digital platforms hybrid learning IQ language proficiency memory ATTENTION
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Transforming Digital Experiences: The Evolution of Digital Experience Platforms (DXPs) from Monoliths to Microservices: A Practical Guide
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作者 Sourabh Sethi Sarah Panda 《Journal of Computer and Communications》 2024年第2期142-155,共14页
The research aims to explore the transition from monolithic Digital Experience Platforms (DXPs) to Microservices-based DXPs, addressing scalability challenges. The study systematically decomposes monolithic structures... The research aims to explore the transition from monolithic Digital Experience Platforms (DXPs) to Microservices-based DXPs, addressing scalability challenges. The study systematically decomposes monolithic structures into Microservices, emphasizing business capability and subdomain decomposition. Concrete insights, challenges, and solutions encountered during this transformation process are presented. The research contributes valuable insights into the challenges and benefits of adopting Microservices in DXPs. Results highlight the importance of architectural patterns and strategic scaling dimensions for improved performance and scalability. The case study on Backbase’s Engagement Banking Platform showcases successful implementation, providing flexibility, integration, and efficient development in the evolving DXP landscape. 展开更多
关键词 digital Experience platforms (DXPs) Microservices Software Evolution Distributed Systems Architectural Patterns
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Promoting digital twin technology application for process industry:A novel generation modelling platform and its implementations
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作者 Yinan Zhang Wenhai Wang +12 位作者 Qiang Yang Xiaoyu Tang Wei Ruan Yingze Li Surong Daoerji Xiang Zhang Yuqi Ye Jiawei Huang Junjie Li Yu Yang Xinyao Wu Haoran Yang Tianyu Cao 《Digital Twins and Applications》 2024年第1期51-74,共24页
One key concept of Industry 4.0 is the industrial digital twin(DT)-a virtual replica of physical assets,processes,and systems.DTs optimise operations,enhance productivity,and facilitate innovation across various indus... One key concept of Industry 4.0 is the industrial digital twin(DT)-a virtual replica of physical assets,processes,and systems.DTs optimise operations,enhance productivity,and facilitate innovation across various industries,including manufacturing,energy,healthcare,and transportation.This paper presents a multi-domain and multi-time scale modelling and simulation platform,featuring built-in model libraries that represent diverse physical,chemical,and behavioural properties.A comprehensive system model-ling approach and a closed-loop industrial control system based on DTs are developed,showcasing advanced control,optimisation,and system security research capabilities.The architecture and advantages of the novel generation modelling platform are detailed,with specific applications highlighted,underscoring its contributions to the process industry. 展开更多
关键词 chemical engineering control engineering digital twins electrical engineering simulation
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Media Sporting Events as Platforms for‘Soft Power’and Digital Activism
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作者 Ivana Matteucci 《Sociology Study》 2024年第1期1-8,共8页
Mediatic sporting events are increasingly used in the geopolitical arena to gain consensus, at the same time emerging as platforms for the discussion of social issues, such as human rights and sustainability. This art... Mediatic sporting events are increasingly used in the geopolitical arena to gain consensus, at the same time emerging as platforms for the discussion of social issues, such as human rights and sustainability. This article presents an investigation into the role of mediatic sporting events and digital platforms in sparking political debate and social engagement to bring about change, including discussions on global and local interests and the performances of activist fans to promote debate on specific issues. The investigation employs a quantitative methodology. The initial inductive analysis uses a matrix of cultural key-frames of the empowerment and protest that accompany media sporting events, verifying their presence and effectiveness in different communication milieus. An analysis of the representation of protests on social media was performed through content analysis. The results of the investigation show that mediatic sporting events are to be understood as a diverse range of generators of multiple political effects: from the exercise of power to mass mobilization and media criticism. 展开更多
关键词 sporting events mainstream media social media soft power digital activism
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Platforms for Prosperity China’s platform giants are poised to drive the next wave of economic growth
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作者 ZHANG SHASHA 《ChinAfrica》 2025年第1期49-51,共3页
On 20 April 1994,China made its first o!cial full-function connection to the World Wide Web through a 64-kilobyte international leased line,marking the country’s formal entry into the global digital age.The year 2024... On 20 April 1994,China made its first o!cial full-function connection to the World Wide Web through a 64-kilobyte international leased line,marking the country’s formal entry into the global digital age.The year 2024 marked the 30th anniversary of the country’s entry into the internet era. 展开更多
关键词 platform internet FORMAL
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Long-term monitoring of active large-scale landslides for non-structural risk mitigation-integrated sensors and web-based platform
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作者 CATELAN Filippo Tommaso BOSSI Giulia +8 位作者 SCHENATO Luca TONDO Melissa CRITELLI Vincenzo MULAS Marco CICCARESE Giuseppe CORSINI Alessandro TONIDANDEL David MAIR Volkmar MARCATO Gianluca 《Journal of Mountain Science》 2025年第1期1-15,共15页
Large-scale deep-seated landslides pose a significant threat to human life and infrastructure.Therefore,closely monitoring these landslides is crucial for assessing and mitigating their associated risks.In this paper,... Large-scale deep-seated landslides pose a significant threat to human life and infrastructure.Therefore,closely monitoring these landslides is crucial for assessing and mitigating their associated risks.In this paper,the authors introduce the So Lo Mon framework,a comprehensive monitoring system developed for three large-scale landslides in the Autonomous Province of Bolzano,Italy.A web-based platform integrates various monitoring data(GNSS,topographic data,in-place inclinometer),providing a user-friendly interface for visualizing and analyzing the collected data.This facilitates the identification of trends and patterns in landslide behaviour,enabling the triggering of warnings and the implementation of appropriate mitigation measures.The So Lo Mon platform has proven to be an invaluable tool for managing the risks associated with large-scale landslides through non-structural measures and driving countermeasure works design.It serves as a centralized data repository,offering visualization and analysis tools.This information empowers decisionmakers to make informed choices regarding risk mitigation,ultimately ensuring the safety of communities and infrastructures. 展开更多
关键词 Web-based platform South Tyrol landslides Long term monitoring Risk mitigation
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Effectiveness of RESET care program: A real-world-evidence on managing non-alcoholic fatty liver disease through digital health interventions
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作者 Jayesh Soni Nikhilesh Pathak +6 位作者 Mihir Gharia Devina Aswal Jaymin Parikh Prachi Sharma Astha Mishra Dhvni Lalan Twinkle Maheshwari 《World Journal of Hepatology》 2025年第1期64-72,共9页
BACKGROUND Non-alcoholic fatty liver disease(NAFLD)management requires sustainable lifestyle modifications.This study aimed to evaluate the effectiveness of the RESET care plan,a comprehensive program that is an integ... BACKGROUND Non-alcoholic fatty liver disease(NAFLD)management requires sustainable lifestyle modifications.This study aimed to evaluate the effectiveness of the RESET care plan,a comprehensive program that is an integrated personalized diet,exercise,and cognitive behavior therapy,delivered via MyTatva’s digital health application enabled through a body composition analyzer(BCA)and smartwatch.AIM To evaluates the effectiveness of the comprehensive program delivered via My-Tatva’s digital health app enabled through internet of thing devices.METHODS This retrospective observational study analyzed deidentified data from 22 par-ticipants enrolled in the MyTatva RESET care program.Participants were divided into three groups:Group A,diet plan;Group B,diet+exercise plan;and Group C,diet+exercise+cognitive behavioral therapy plan.Participants were provided with a BCA and smartwatch for continuous monitoring of anthropometric para-meters.Statistical analysis,including one-way ANOVA and post-hoc Tukey’s Honest Significant Difference test,was conducted to compare mean changes in anthropometric parameters across the groups.INTRODUCTION Non-alcoholic fatty liver disease(NAFLD)has emerged as a global health burden,affecting approximately 1 in 4 in-dividuals worldwide.NAFLD ranges from simple steatosis(fat accumulation)to non-alcoholic steatohepatitis(NASH),and its global prevalence in the general population is estimated between 6.3%and 33%,with NASH affecting 3-5%[1,2].Obesity is a major risk factor of NAFLD,with studies showing that the likelihood of developing NAFLD increases 5-fold at a body mass index(BMI)of 30-32.5 kg/m²and up to 14-fold at BMI of 37.5-40 kg/m²compared to a BMI of 20-22.5 kg/m²[3,4].Effective NAFLD management requires both dietary and physical activity modifications.Healthy weight loss with sustained muscle mass plays a pivotal role,with a reduction of 3%-5%decreasing hepatic steatosis,5%-7%improving NASH conditions,and 10%or more needed to reverse hepatic fibrosis[5].Management also normalizes elevated liver enzymes(aspartate aminotransferase and alanine aminotransferase),enhances insulin sensitivity,and thereby reduces cardiovascular risk by improving endothelial function and increasing cardiorespiratory fitness[6].However,diet or exercise alone is often not as effective as a combined approach.Integrating both balanced dietary changes and increased physical activity yields more sustainable improvements in NAFLD and overall metabolic health[1,7].Traditional intervention methods usually involve in-person consultations,which often lack real-time and continuous patient monitoring.The recommendation of drastic changes in diet and exercise can also be overwhelming for patients,leading to low adherence rates.Many patients struggle to maintain these changes in the long-term due to a lack of con-tinuous motivational support[8,9].In recent years,the health ecosystem has witnessed a significant shift toward digital health platforms,which complement pharmacological treatments in chronic disease management,and increase scala-bility.These platforms provide continuous monitoring and personalized support,helping to bridge the gap between health care setups and patients[10].Recent digital advances enable internet of things(IoT)devices to be integrated into such management plans to track health metrics,to address the limitations of traditional methods[11,12].The MyTatva digital health application offers the RESET plan,a novel comprehensive approach for NAFLD mana-gement by integrating personalized support from nutrition,physiotherapy,and cognitive behavioral therapy(CBT)coaches.We aimed to evaluate the effectiveness of the RESET plan by analyzing the reduction in anthropometric para-meters across three different digital intervention groups. 展开更多
关键词 Cognitive behavioral therapy digital health interventions Diet and exercise regimens Lifestyle modifications Non-alcoholic fatty liver disease management
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Architecture and application of integrated spatial information service platform for digital mine 被引量:2
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作者 ZHANG Jin1, XIAO Jie2 1. College of Mining, Taiyuan University of Technology, Taiyuan 030024, China 2. Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077, China 《中国有色金属学会会刊:英文版》 CSCD 2011年第S3期706-711,共6页
Using enterprise GIS platform, spatial databases and modern information technology, building geo-spatial information service platform of digital mine which has the features of the data exchange service, enterprise GIS... Using enterprise GIS platform, spatial databases and modern information technology, building geo-spatial information service platform of digital mine which has the features of the data exchange service, enterprise GIS services, directory services, logging services, is key technology and application infrastructure for digital mine. Based on the support of geospatial information service platform of digital mine, the professional GIS application service adapter can be developed and the application supports related to mining application system can be realized. Using high-resolution satellite remote sensing data, the mine functional partition map and geographic grids can be divided, and the geographic grid parts, status and events of important features of the surface object were investigated and defined. The system architecture and technical characteristics of integrated spatial information service platform were analyzed firstly, which guarantee service ability of digital mine. The methods and applications of functional partition map for integrated management service platform were discussed which are the services scheme of digital mine. The application results indicated that digital mine upgrades and enhances the capability and range of mine surveying and mapping, and is of great significance for guarantee of efficient, green and intensive exploitation of mine. 展开更多
关键词 platform ARCHITECTURE web SERVICES application SERVICES digital MINE
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Merkle Tree Digital Signature and Trusted Computing Platform 被引量:1
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作者 WANG Xiaofei HONG Fan TANG Xueming CUI Guohua 《Wuhan University Journal of Natural Sciences》 CAS 2006年第6期1467-1472,共6页
Lack of efficiency in the initial key generation process is a serious shortcoming of Merkle tree signature scheme with a large number of possible signatures. Based on two kinds of Merkle trees, a new tree type signatu... Lack of efficiency in the initial key generation process is a serious shortcoming of Merkle tree signature scheme with a large number of possible signatures. Based on two kinds of Merkle trees, a new tree type signature scheme is constructed, and it is provably existentially unforgeable under adaptive chosen message attack. By decentralizing the initial key generation process of the original scheme within the signature process, a large Merkle tree with 6.87×10^10 possible signatures can be initialized in 590 milliseconds. Storing some small Merkle trees in hard disk and memory can speed up Merkle tree signature scheme. Mekle tree signature schemes are fit for trusted computing platform in most scenarios. 展开更多
关键词 digital signature one-time signature Merkle tree trusted computing platform
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Performance Optimization of Fujian Digital Design and Manufacture Service Platform Based on AJAX 被引量:1
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作者 ZHU Xiaolin GAO Chenghui HE Bingwei School of Mechanical Engineering and Automation,Fuzhou University,Fuzhou 350002,China, 《武汉理工大学学报》 CAS CSCD 北大核心 2006年第S3期1107-1110,共4页
In this paper,the problem on the service platform,which existed on the traditional WEB application mode,are analyzed in detail.It shows that application of the AJAX technology can optimize the service platform.And the... In this paper,the problem on the service platform,which existed on the traditional WEB application mode,are analyzed in detail.It shows that application of the AJAX technology can optimize the service platform.And the AJAX technology can supply the wonderful solution for the development of the high-performance WEB application by means of the WEB performance testing tool to test the network performance of the service platform. 展开更多
关键词 AJAX WEB application SERVICE platform PERFORMANCE OPTIMIZATION
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Framework of Digital Machining Process Planning Platform for Cylinder Body Part 被引量:2
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作者 马玉敏 樊留群 +1 位作者 朱志浩 张浩 《Journal of Donghua University(English Edition)》 EI CAS 2007年第5期627-632,共6页
Digital factory technology is an advanced manufacturing technology served as to establish a bridge between the process of product development and manufacturing.In terms of application for digital factory technology in... Digital factory technology is an advanced manufacturing technology served as to establish a bridge between the process of product development and manufacturing.In terms of application for digital factory technology in machining,especially in machining of a complicated part such as a cylinder body part,a concept of digital process planning and its framework are proposed.Its components including machining domain knowledge model,machining knowledge base,machining resource base and process planning system are studied.A machining knowledge model in tree form and an object-driven knowledge reasoning mechanism are used for machining knowledge base.The process planning system is a user interface that leads a planner to finish the planning process.A case about a cylinder head part is given to demonstrate how the platform works.The framework of digital process planning is the foundation of some intelligent CAPP systems and helps to production line planning. 展开更多
关键词 digital process planning plat form machining knowledge base digital factory cylinder body part
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Interface Design Of Digital Platform For Bio Signal Processing
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作者 Jongsik Park Moonsu Jang Seongoo Lee 《Journal of Measurement Science and Instrumentation》 CAS 2010年第S1期129-132,共4页
Bio-sensor arrays for multi-channel recording have been developed recently and signal processing platforms for those signals have been studied actively.But it’s thereal situation which these technologies are generall... Bio-sensor arrays for multi-channel recording have been developed recently and signal processing platforms for those signals have been studied actively.But it’s thereal situation which these technologies are generally developed and studied respectively.So the interface design between recording array and signal processing platform is also an important issue to make bio-sensor signal processing system.In this paper,we proposed interface which has unique protocols to control sensor array and operate platform.There are two types of protocols in the interface.One is between sensor array and MCU in platform and the other is between MCU and board for wireless communication.Basically,each protocol has two kinds of modes(single,frame)and it can be extended if needed. 展开更多
关键词 INTERFACE bio-sensor digital platform signal processing
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Research on Framework of Digital Process Planning Platform
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作者 MA Yumin~1 FAN Liuqun~2 ZHU Zhihao~1 ZHANG Hao~3 (1.CIMS Research Center,Tongji University,Shanghai 200092,China, 2.College of Chinese-German,Tongji University,Shanghai 200092,China 3.Shanghai University of Electric Power,Shanghai 200090,China) 《武汉理工大学学报》 CAS CSCD 北大核心 2006年第S3期913-917,共5页
Digital factory technology is a research focus in academe and industry,which is an advanced manufacturing tech- nology that is proposed to bridge product development and manufacturing.For applying digital factory tech... Digital factory technology is a research focus in academe and industry,which is an advanced manufacturing tech- nology that is proposed to bridge product development and manufacturing.For applying digital factory technology in machining domain,a concept of digital process planning and its framework are suggested,its components including machining domain knowledge model,machining knowledge base,machining resource base and process planning system are studied.The framework of digital process planning is of value for implementing digital factory technology in machining industry. 展开更多
关键词 digital process PLANNING platform MACHINING KNOWLEDGE base digital FACTORY
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The Dilemma of Women’s Voices in the Post-Epidemic Era:Misconceptions of Feminism on Digital Media Platforms-The Example of Sina Weibo
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作者 LIU Yuewen 《Psychology Research》 2023年第2期88-103,共16页
Weibo,one of China’s largest digital media platforms,has become a major platform for women’s voices to fight for equality.However,misconceptions of feminism on Weibo have become obstacles to women’s voices,for whic... Weibo,one of China’s largest digital media platforms,has become a major platform for women’s voices to fight for equality.However,misconceptions of feminism on Weibo have become obstacles to women’s voices,for which the platforms did not post women’s views prominently.From the perspective of women themselves,this paper adopted a questionnaire to study the misunderstanding of feminism and its impact on women’s expression on Weibo. 展开更多
关键词 FEMINISM women’s voices digital media platforms the post-epidemic era
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A Semantic Metadata Enrichment Software Ecosystem (SMESE) Based on a Multi-Platform Metadata Model for Digital Libraries 被引量:1
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作者 Ronald Brisebois Alain Abran Apollinaire Nadembega 《Journal of Software Engineering and Applications》 2017年第4期370-405,共36页
Software industry has evolved to multi-product and multi-platform development based on a mix of proprietary and open source components. Such integration has occurred in software ecosystems through a software product l... Software industry has evolved to multi-product and multi-platform development based on a mix of proprietary and open source components. Such integration has occurred in software ecosystems through a software product line engineering (SPLE) process. However, metadata are underused in the SPLE and interoperability challenge. The proposed method is first, a semantic metadata enrichment software ecosystem (SMESE) to support multi-platform metadata driven applications, and second, based on mapping ontologies SMESE aggregates and enriches metadata to create a semantic master metadata catalogue (SMMC). The proposed SPLE process uses a component-based software development approach for integrating distributed content management enterprise applications, such as digital libraries. To perform interoperability between existing metadata models (such as Dublin Core, UNIMARC, MARC21, RDF/RDA and BIBFRAME), SMESE implements an ontology mapping model. SMESE consists of nine sub-systems: 1) Metadata initiatives & concordance rules;2) Harvesting of web metadata & data;3) Harvesting of authority metadata & data;4) Rule-based semantic metadata external enrichment;5) Rule-based semantic metadata internal enrichment;6) Semantic metadata external & internal enrichment synchronization;7) User interest-based gateway;8) Semantic master catalogue. To conclude, this paper proposes a decision support process, called SPLE decision support process (SPLE-DSP) which is then used by SMESE to support dynamic reconfiguration. SPLE-DSP consists of a dynamic and optimized metadata-based reconfiguration model. SPLE-DSP takes into account runtime metadata-based variability functionalities, context-awareness and self-adaptation. It also presents the design and implementation of a working prototype of SMESE applied to a semantic digital library. 展开更多
关键词 digital Library METADATA ENRICHMENT Semantic METADATA ENRICHMENT SOFTWARE ECOSYSTEM SOFTWARE Product Line Engineering
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The Monopoly and Governance of the Platform Economy in the Digital Era 被引量:1
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作者 Zhang Jin Yu Yuxin 《Contemporary Social Sciences》 2021年第3期77-88,共12页
The platform economy has become a new engine and leading force for China's economic development.With the rapid development of super internet platforms, this field has drawn growing attention from attention of anti... The platform economy has become a new engine and leading force for China's economic development.With the rapid development of super internet platforms, this field has drawn growing attention from attention of anti-monopoly authorities.The technical attributes and business characteristics of the platform economy endow those platforms with a "natural" monopoly advantage, and the quasi-public attributes of the internet platforms require anti-monopoly authorities to bear more monopoly governance responsibilities.This paper analyzes the difficulties in monopoly governance of the platform economy from the perspectives of anti-monopoly legislation, government regulation and global monopoly governance, and proposes several solutions and suggestions to improve the effectiveness of anti-monopoly governance and promote healthy development of the digital economic ecology.The solutions and suggestions include: focusing on building up technology-based regulatory capabilities, accelerating the legislation on data protection of data, and developing an anti-monopoly system based on the principle of giving priority to innovation. 展开更多
关键词 platform economy MONOPOLY GOVERNANCE
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Digital signal acquisition system for complex nuclear reaction experiments 被引量:3
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作者 Wei-Liang Pu Yan-Lin Ye +1 位作者 Jian-Ling Lou Jia-Hao Chen 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2024年第1期124-133,共10页
A digital data-acquisition system based on XIA LLC products was used in a complex nuclear reaction experiment using radioactive ion beams.A flexible trigger system based on a field-programmable gate array(FPGA)paramet... A digital data-acquisition system based on XIA LLC products was used in a complex nuclear reaction experiment using radioactive ion beams.A flexible trigger system based on a field-programmable gate array(FPGA)parametrization was developed to adapt to different experimental sizes.A user-friendly interface was implemented,which allows converting script language expressions into FPGA internal control parameters.The proposed digital system can be combined with a conventional analog data acquisition system to provide more flexibility.The performance of the combined system was veri-fied using experimental data. 展开更多
关键词 digital signal acquisition system TRIGGER Programmable logic TIMESTAMP
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Application of GNSS-PPP on Dynamic Deformation Monitoring of Offshore Platforms 被引量:2
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作者 YU Li-na XIONG Kuan +3 位作者 GAO Xi-feng LI Zhi FAN Li-long ZHANG Kai 《China Ocean Engineering》 SCIE EI CSCD 2024年第2期352-361,共10页
The real-time dynamic deformation monitoring of offshore platforms under environmental excitation is crucial to their safe operation.Although Global Navigation Satellite System-Precise Point Positioning(GNSS-PPP)has b... The real-time dynamic deformation monitoring of offshore platforms under environmental excitation is crucial to their safe operation.Although Global Navigation Satellite System-Precise Point Positioning(GNSS-PPP)has been considered for this purpose,its monitoring accuracy is relatively low.Moreover,the influence of background noise on the dynamic monitoring accuracy of GNSS-PPP remains unclear.Hence,it is imperative to further validate the feasibility of GNSS-PPP for deformation monitoring of offshore platforms.To address these concerns,vibration table tests with different amplitudes and frequencies are conducted.The results demonstrate that GNSS-PPP can effectively monitor horizontal vibration displacement as low as±30 mm,which is consistent with GNSS-RTK.Furthermore,the spectral characteristic of background noise in GNSS-PPP is similar to that of GNSS-RTK(Real Time Kinematic).Building on this observation,an improved Complete Ensemble Empirical Mode Decomposition with Adaptive Noise(CEEMDAN)has been proposed to de-noise the data and enhance the dynamic monitoring accuracy of GNSS-PPP.Field monitoring application research is also undertaken,successfully extracting and analyzing the dynamic deformation of an offshore platform structure under environmental excitation using GNSS-PPP monitoring in conjunction with improved CEEMDAN de-noising.By comparing the de-noised dynamic deformation trajectories of the offshore platform during different periods,it is observed that the platform exhibits reversible alternating vibration responses under environmental excitation,with more pronounced displacement deformation in the direction of load action.The research results confirm the feasibility and potential of GNSS-PPP for dynamic deformation monitoring of offshore platforms. 展开更多
关键词 GNSS-PPP offshore platform dynamic deformation monitoring improved CEEMDAN de-noising
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