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Design and Realization of a Monolithic GaAs 3Bit Phase Digitizing DAC
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作者 张有涛 夏冠群 +2 位作者 李拂晓 高建峰 杨乃彬 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2005年第5期873-876,共4页
Design,realization,and test of a monolithic GaAs 3bit phase digitizing DAC for 3bit digital radio-frequency memory are detailedly described.The 0.5μm fully ion-implanted GaAs MESFET is used to fabricate the circuit ... Design,realization,and test of a monolithic GaAs 3bit phase digitizing DAC for 3bit digital radio-frequency memory are detailedly described.The 0.5μm fully ion-implanted GaAs MESFET is used to fabricate the circuit in Nanjing Electronic Devices Institute’s (NEDI’s) 75mm standard process line.The high-speed DAC is designed with on-wafer 50Ω I/O impedance matching.Test results show that its work bandwidth is more than 1.5GHz,and phase accuracy is better than 4%.Its code conversion rate can be higher than 12Gbps. 展开更多
关键词 phase digitizing DAC HIGH-SPEED GAAS DRFM
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Digitizing Dunhuang Cultural Heritage:A User Evaluation of Mogao Cave Panorama Digital Library 被引量:1
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作者 Xiao Hu Eric M.Y.Ho Chen Qiao 《Journal of Data and Information Science》 CSCD 2017年第3期49-67,共19页
Purpose: This study is a user evaluation on the usability of the Mogao Cave Panorama Digital Library (DL), aiming to measure its effectiveness from the users' perspective and to propose suggestions for improvement... Purpose: This study is a user evaluation on the usability of the Mogao Cave Panorama Digital Library (DL), aiming to measure its effectiveness from the users' perspective and to propose suggestions for improvement. Design/methodology/approach: Usability tests were conducted based on a framework of evaluation criteria and a set of information seeking tasks designed for the Dunhuang cultural heritage, and interviews were conducted for soliciting in-depth opinions from participants. Findings: The results of the usability tests indicate that the DL was more efficient in supporting simple information seeking tasks than those of higher-complexity levels. Statistical tests reveal that there were correlations among dimensions of usability criteria and user effectiveness measures. Moreover, interview discourses exposed specific usability issues of the DL. Research limitations: This research is based on a relatively small sample size, resulting in a limited representativeness of user diversity. A larger sample size is needed for a systematic cross group comparison. Practical implications: This study evaluated the usability of the Mogao Cave Panorama DL and proposed suggestions for its improvement for better experience. The results also provide a reference to other cultural heritage DLs with panorama functions. Originality/value: This study is one of the first evaluating cultural heritage DLs from the perspective of user experience. It provides methodological references for relevant studies: the evaluation framework, the designed information seeking tasks, and the interview questions can be adopted or adapted in evaluating other visually centric DLs of cultural heritage. 展开更多
关键词 Mogao Caves Cultural heritage USABILITY Dunhuang Panorama digital library
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Geological Panorama Database:Digitizing and Visualizingthe Geological Outcrops
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作者 DENG Yiying CHEN Dongyang +4 位作者 FAN Junxuan SHI Yukun HOU Xudong YANG Jiao XU Wenxiang 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2019年第S01期11-13,共3页
1 Introduction Geological outcrops or sections are the basis of geological research.However,the traditional methods for presenting them are mainly photos which fall short of delivering a true visual sense (Deng et al.... 1 Introduction Geological outcrops or sections are the basis of geological research.However,the traditional methods for presenting them are mainly photos which fall short of delivering a true visual sense (Deng et al.,2009;Hou et al.,2014).With the continuous development of image acquisition technology using single-lens reflex camera (SLR camera),image synthesis,large file storage and acquisition,panoramic visualization and network technology. 展开更多
关键词 GEOLOGICAL outcrops PANORAMA DATABASE DIGITIZATION VISUALIZATION
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Digitizing the Undigitized: Converting Traditional Archaeological Records into Computerized, Three-Dimensional Site Reconstruction
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作者 Nira Alperson-Afil 《Journal of Geographic Information System》 2019年第6期747-765,共19页
Archaeological excavation involves disintegration, removal, and reassembly of the archaeological record;as such it is considered by many to be an unrepeatable, destructive activity. This perception has contributed to ... Archaeological excavation involves disintegration, removal, and reassembly of the archaeological record;as such it is considered by many to be an unrepeatable, destructive activity. This perception has contributed to an advancement in archaeological practice, namely, the development of computerized recording systems that digitally record archaeological excavations spatially and volumetrically during fieldwork. This paper is concerned with those archaeological sites where digital field recording has not been done. These sites, recorded by traditional methods, should not be excluded from attempts to restructure the spatial, volumetric, and stratigraphic archaeological data. A thorough methodology for the conversion of traditional records into digitized data is presented, including the detailed procedures required for three-dimensional plotting of recorded data—both the excavated material and the drawn site maps and cross-sections. Finally, the use of these methods is demonstrated on a complex Early to Middle Pleistocene site, illustrating the benefits of digitization and three-dimensional reconstruction in resolving stratigraphic and spatial questions. 展开更多
关键词 Digital ARCHAEOLOGY GEOGRAPHIC Information Systems Archaeological Recording Methods THREE-DIMENSIONAL RECONSTRUCTION Model
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Application of the DRS4 chip for GHz waveform digitizing circuits 被引量:5
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作者 杨海波 苏弘 +4 位作者 孔洁 成科 陈金达 杜成明 张惊蛰 《Chinese Physics C》 SCIE CAS CSCD 2015年第5期73-79,共7页
A new fast waveform sampling digitizing circuit based on the domino ring sampler (DRS), a switched capacitor array (SCA) chip, is presented in this paper, which is different from the traditional waveform digitizin... A new fast waveform sampling digitizing circuit based on the domino ring sampler (DRS), a switched capacitor array (SCA) chip, is presented in this paper, which is different from the traditional waveform digitizing circuit constructed with an analog to digital converter (ADC) or time to digital converter. A DRS4 chip is used as a core device in our circuit, which has a fast sampling rate up to five gigabit samples per second (GSPS). Quite satisfactory results are acquired by the preliminary performance test for this circuit board. Eight channels can be provided by one board, which has a 1 V input dynamic range for each channel. The circuit linearity is better than 0.1%, the noise is less than 0.5 mV (root mean square, RMS), and its time resolution is about 50 ps. Several boards can be cascaded to construct a multi-board system. The advantages of high resolution, low cost, low power dissipation, high channel density and small size make the circuit board useful not only for physics experiments, but also for other applications. 展开更多
关键词 DRS4 waveform sampling digitizing circuit high sampling rate high resolution
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Research and Implementation of Invisible Digital Watermark Encryption Detection Technology
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作者 LIU Tai WU Feng ZHANG Guo-Yan 《密码学报(中英文)》 北大核心 2026年第1期179-198,共20页
Discrete wavelet transform(DWT)algorithm is an encryption algorithm based on wavelet transform for frequency decomposition of signals or images on multiple scales.Based on the Loongson 2K processor platform,the audio,... Discrete wavelet transform(DWT)algorithm is an encryption algorithm based on wavelet transform for frequency decomposition of signals or images on multiple scales.Based on the Loongson 2K processor platform,the audio,picture and video information as carriers to encrypt and decrypt the watermark information is realized by integrating and stacking the watermark detection functions on the processor platform of the switching nodes in the off-chain communication network within blockchain systems,using the sliding window mechanism of Loongson 2K to control the smoothness of the digital information,and by multi-thread mechanism of the processor to control the real-time performance of the digital signal transmission.The performance of the least significant bit(LSB)algorithm,discrete cosine transform(DCT)algorithm,and DWT algorithm is analyzed.The performance comparison of LSB algorithm,DCT algorithm,and DWT algorithm under filtering attack,scaling attack,noise attack,cropping attack,and spin attack is simulated respectively.The experimental results show that,filtered attack normalized correlation(NC)coefficient for DWT is 0.95786,for scaled attack is 0.98962,for noise attack is 0.93842,spin attack NC is 0.86823,and clipped attack NC is 0.878814.The DWT algorithm has the small image distortion rate,is more robust to audio and video watermarking against attack effects,and the experimental data are superior to the LSB and DCT algorithms.Using Loongson 2K multi-threading mode to control the real-time data transmission,greatly improves the practicability of DWT algorithm on embedded devices,which can be effectively applied to authenticity verification when media data such as images and audio are uploaded to the blockchain. 展开更多
关键词 digital watermarking Loongson2K discrete cosine transform(DCT) discrete wavelet transform(DWT)
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Waveform digitizing for LaBr_3/NaI phoswich detector
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作者 佘睿 季建峰 +2 位作者 冯骅 李红 韩冬 《Chinese Physics C》 SCIE CAS CSCD 2014年第8期64-67,共4页
The detection efficiency of phoswich detector starts to decrease when Compton scattering becomes significant. Events with energy deposit in both scintillators, if not rejected, are not useful for spectral analysis as ... The detection efficiency of phoswich detector starts to decrease when Compton scattering becomes significant. Events with energy deposit in both scintillators, if not rejected, are not useful for spectral analysis as the full energy of the incident photon cannot be reconstructed with conventional readout. We show that once the system response is carefully calibrated, the full energy of those double deposit events can be reconstructed using a waveform digitizer as the readout. Our experiment suggests that the efficiency of a photopeak at 662 keV can be increased by a factor of 2 using our LaBr3/NaI phoswich detector. 展开更多
关键词 X-ray detector PHOSWICH LaBr3 waveform digitizing
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Genuinely Intelligent Ties China and Thailand are leveraging AI to transform bilateral cooperation from efficiency-driven coordination into systemic, sustainable co-development with regional impact
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作者 Ou Weiyong Chen Bingbing 《China Report ASEAN》 2026年第3期58-62,共5页
In recent years, the digital economy has become a key driver of deepening China-Thailand cooperation. As trade and industrial digitalization advance, artificial intelligence (AI), an essential force in the new wave of... In recent years, the digital economy has become a key driver of deepening China-Thailand cooperation. As trade and industrial digitalization advance, artificial intelligence (AI), an essential force in the new wave of technological revolution, is increasingly embedded in the bilateral agenda, steering collaboration beyond efficiencydriven “digital coordination” toward more structured and systemic“intelligent co-development.”Building on five decades of mutual trust since the establishment of diplomatic ties, this cooperation not only addresses the practical needs of industrial upgrading and governance transformation but offers a valuable reference for ASEAN countries exploring replicable pathways in the era of digital transformation. 展开更多
关键词 intelligent co development AI digital economy technological revolution bilateral cooperation trade digitalization artificial intelligence industrial upgrading
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Mapping research trends and competency domains in nursing-related digital and artificial intelligence technologies:A bibliometric analysis
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作者 Kanjanee Phanphairoj Wasinee Wisesrith Sutthisan Chumwichan 《International Journal of Nursing Sciences》 2026年第1期36-44,I0003,I0004,共11页
Objectives This study aimed to explore the research trends,thematic structures,and core competency domains in the field of nursing-related digital and artificial intelligence(AI)technologies.Methods A bibliometric ana... Objectives This study aimed to explore the research trends,thematic structures,and core competency domains in the field of nursing-related digital and artificial intelligence(AI)technologies.Methods A bibliometric analysis was conducted in accordance with the PRISMA 2020 statement.Peer-reviewed articles published in English from 2015 to 2025 were retrieved from Scopus,Web of Science,and PubMed.Thematic clustering was conducted using the Louvain algorithm and cosine similarity.A subset of 66 frequently cited articles was then qualitatively synthesized to capture core competencies across clusters.Results A total of 83,807 articles were included for bibliometric analysis.Of these,66 articles were chosen for thematic analysis.Five major thematic clusters were identified:remote care in primary settings,oncology and palliative care,nurse education and training,safety and quality in nursing practice,and geriatric and dementia care.Additionally,four competency domains were identified:telehealth and remote communication,health systems and informatics,digital tools in practice,and AI-powered decision support.A clear shift in research focus was observed,with the emphasis transitioning from foundational digital skills before the COVID-19 pandemic to more advanced competencies during the post-pandemic digital transformation,encompassing ethical reasoning,immersive technology use,and AI integration.Conclusions Integrating digital and AI technologies is reshaping nursing practice across various thematic areas and competency domains,highlighting a transition from foundational digital tasks to AI-supported decision-making and ethically informed technology use.This study provides a structured overview of evolving competencies in digital nursing and synthesizes evidence to support future research,curriculum design,and policy planning. 展开更多
关键词 Artificial intelligence competence Bibliometric analysis Digital competence Nursing competency domains Post-pandemic digital transformation
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Theoretical Logic and Practical Pathways for Distance Open Education Empowering the Enhancement of Digital Literacy among Rural Cadres
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作者 Ming LU Ji TANG Yuxiao ZHANG 《Asian Agricultural Research》 2026年第2期37-41,共5页
At present, enhancing the digital literacy of village cadres faces practical constraints such as governance capability gaps induced by the second-level digital divide, the absence of a systematic cultivation system, i... At present, enhancing the digital literacy of village cadres faces practical constraints such as governance capability gaps induced by the second-level digital divide, the absence of a systematic cultivation system, incomplete last-kilometer implementation for translating skills into practice, and inadequate incentive mechanisms. As a novel educational form deeply integrating digital information technology with teaching and learning, distance open education provides multi-directional empowerment for enhancing village cadres digital literacy. This is achieved through open learning methods, the application of modern digital technologies, tailored learning programs, and the establishment of "overpass bridges" for translating learning outcomes into practice. Based on this, it is essential to further streamline the pathways for educating and cultivating village cadres, vigorously promote the digitalization of teaching, practice, and support services, develop systematic and localized digital education resources, and actively explore and establish a complementary credit bank system for their digital literacy cultivation. 展开更多
关键词 Distance open education Digital literacy Village cadres Rural digital governance
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Deals on the Rise CAFTA 3.0 ushers in new breakthroughs in China-ASEAN trade,digital and green cooperation,and regional resilience
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作者 Liu Jiaqi 《China Report ASEAN》 2026年第2期18-21,共4页
On October 28,2025,China and ASEAN signed the China-ASEAN Free Trade Area(CAFTA)3.0 Upgrade Protocol in Kuala Lumpur,Malaysia,in the presence of Chinese Premier Li Qiang,Malaysian Prime Minister Anwar Ibrahim,and lead... On October 28,2025,China and ASEAN signed the China-ASEAN Free Trade Area(CAFTA)3.0 Upgrade Protocol in Kuala Lumpur,Malaysia,in the presence of Chinese Premier Li Qiang,Malaysian Prime Minister Anwar Ibrahim,and leaders of other ASEAN member states.A close look at the protocol shows that the upgraded agreement marks substantive advances on several fronts. 展开更多
关键词 digital cooperation ASEAN China TRADE CAFTA regional resilience green cooperation
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The role of digital twin technology in physiotherapy and rehabilitation practice
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作者 David Bamidele OLAWADE Ezenwa Robinson MODUM +3 位作者 Olabanke Florence OLAWUYI Omobolaji Rosemary OLASILOLA Babajide David MAKANJUOLA John Oluwatosin ALABI 《虚拟现实与智能硬件(中英文)》 2026年第1期71-86,共16页
Digital twin technology,that creates virtual replicas of physical entities using real-time data and simulation models,has emerged as a transformative innovation across multiple healthcare domains.Its application in ph... Digital twin technology,that creates virtual replicas of physical entities using real-time data and simulation models,has emerged as a transformative innovation across multiple healthcare domains.Its application in physiotherapy and rehabilitation represents a paradigm shift from traditional therapeutic approaches to personalized data-driven interventions that optimize patient outcomes.This narrative review examines the current applications,benefits,challenges,and future prospects of digital twin technology in physiotherapy and rehabilitation,providing a comprehensive analysis of the manner in which this technology is reshaping clinical practice and patient care.A narrative review approach was employed,systematically searching PubMed,IEEE Xplore,Scopus,and Web of Science databases.Studies describing digital twin applications,development methodologies,clinical implementations,and theoretical frameworks in physiotherapy and rehabilitation contexts were included.Digital twin technology demonstrates significant potential in personalizing rehabilitation programs,enabling real-time monitoring of patient progress,predicting treatment outcomes,and facilitating remote therapeutic interventions.Current applications span musculoskeletal rehabilitation,neurological recovery,post surgical care,and sports injury management.Key benefits include enhanced treatment precision,improved patient engagement,reduced healthcare costs,and accelerated recovery times.However,implementation faces challenges including technological complexity,data privacy concerns,interoperability issues,and the need for substantial infrastructure investment.Digital twin technology represents a promising frontier in physiotherapy and rehabilitation,offering unprecedented opportunities for personalized,efficient,and effective patient care.Successful integration requires addressing the current limitations while fostering interdisciplinary collaboration between clinicians,engineers,and data scientists. 展开更多
关键词 Digital twin PHYSIOTHERAPY REHABILITATION Personalized medicine Virtual simulation
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Decoding the Digital Chapter How CAFTA 3.0 is rewriting the rules of the regional digital economy
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作者 Li Zhengyang 《China Report ASEAN》 2026年第2期28-29,共2页
On October 28,2025,in the bustling diplomatic hub of Kuala Lumpur,a defining moment in Asian economic history quietly and solemnly unfolded when leaders from China and ASEAN member states witnessed the official signin... On October 28,2025,in the bustling diplomatic hub of Kuala Lumpur,a defining moment in Asian economic history quietly and solemnly unfolded when leaders from China and ASEAN member states witnessed the official signing of the protocol to upgrade the China-ASEAN Free Trade Area(CAFTA)to Version 3.0.The ceremony marked the culmination of nearly three years of intense negotiations. 展开更多
关键词 economic history CAFTA digital economy diplomatic negotiations regional trade
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A hierarchical and role-driven digital twin system with applications to complex chemical process operation
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作者 Xinyu Tao Runjie Yao +3 位作者 Lingyu Zhu Changrui Xie Muqian Zhang Xi Chen 《Chinese Journal of Chemical Engineering》 2026年第1期302-313,共12页
Digital twin technology brings more opportunities and challenges to chemical engineering in both academic and industry.A complex process could have multiple digitalization needs,including simulation,monitoring,operato... Digital twin technology brings more opportunities and challenges to chemical engineering in both academic and industry.A complex process could have multiple digitalization needs,including simulation,monitoring,operator training,etc.;thus,a hierarchical digital twin would be a comprehensive solution to that.In this study,a novel and general framework of the digital twin is proposed for operations in process industry.With the hierarchical structure,the framework can handle various tasks driven by different roles in process industry,including managers,engineers,and operators.To complete these tasks,the framework consists of three modules:OAS(Operation Analysis System),OMS(Operation Monitoring System),and OTS(Operator Training System).Each module focuses on one unique type of demand from the staff,as well as interactions among them enabling efficient data sharing.Based on the hierarchical framework,a digital twin system is applied for one complex industrial nitration process,which successfully enhances the operation efficiency and safety in several industrial scenarios with different demands. 展开更多
关键词 Digital twin Hierarchical framework Role-driven Process operation Process modeling&optimization Operator training system
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The Green Pillar CAFTA 3.0 opens a new chapter for China-ASEAN cooperation
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作者 Jhane Cago 《China Report ASEAN》 2026年第2期30-31,共2页
China and Southeast Asia are entering a new phase of economic cooperation with the China-ASEAN Free Trade Area(CAFTA)3.0 Upgrade Protocol,in which the green economy has emerged as a central pillar of regional integrat... China and Southeast Asia are entering a new phase of economic cooperation with the China-ASEAN Free Trade Area(CAFTA)3.0 Upgrade Protocol,in which the green economy has emerged as a central pillar of regional integration.Negotiations were substantially concluded in October 2024,but the protocol wasn’t officially signed until October 28,2025,in Kuala Lumpur.The agreement moves beyond traditional tariff reductions to expand cooperation into nine major areas and introduces five new pillars:the digital economy,green economy,supply chain connectivity,competition and consumer protection,and support for micro,small,and medium-sized enterprises(MSMEs). 展开更多
关键词 Economic Cooperation digital economygr expand cooperation ASEAN China tariff reductions green economy CAFTA
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EXCERPTS FROM MAJOR CHINESE MAGAZINES
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《ChinAfrica》 2026年第1期7-7,共1页
RENEWING THE FORBIDDEN CITY’S CENTURY-OLD LEGACY.Oriental Outlook.27 November 2025.At sunrise,the Forbidden City glows under a veil of gold;at night,it retreats into quiet dignity.But the palace never really sleeps.A... RENEWING THE FORBIDDEN CITY’S CENTURY-OLD LEGACY.Oriental Outlook.27 November 2025.At sunrise,the Forbidden City glows under a veil of gold;at night,it retreats into quiet dignity.But the palace never really sleeps.As visitors depart,the“digital relic vault”awakens online,where porcelain,calligraphy,jade and timepieces reveal their beauty in virtual form.History continues to breathe in the data stream. 展开更多
关键词 virtual form digital relic vault PORCELAIN Forbidden City timepieces CALLIGRAPHY data stream JADE
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ON CHINESE MEDIA
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《China Today》 2026年第1期14-15,共2页
A New Chapter of the Century-Old Palace Museum Oriental Outlook Issue 24,2025 The Palace Museum,the imperial palace of the Ming and Qing dynasties(1368-1911),opened to the public in 1925.Rather than a group of static ... A New Chapter of the Century-Old Palace Museum Oriental Outlook Issue 24,2025 The Palace Museum,the imperial palace of the Ming and Qing dynasties(1368-1911),opened to the public in 1925.Rather than a group of static ancient buildings,it stands today as a dynamic cultural organism filled with invaluable collections of cultural relics preserved by generations of artisans and now displayed to the world through digital technology in long-lasting exhibitions. 展开更多
关键词 Ming Dynasty Palace Museum exhibitions digital technology Qing Dynasty cultural relics
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Coupling Development Between Digital Economy–Agriculture Integration and Rural Revitalization in China:Spatiotemporal Disparities and Evolution Trends
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作者 Peng Xiangjun Jia Qingsong 《Contemporary Social Sciences》 2026年第1期71-89,共19页
This study aims to promote the optimization and upgrading of the economic structure in rural areas of China by focusing on the coupling coordination mechanism between digital economy–agriculture integration and rural... This study aims to promote the optimization and upgrading of the economic structure in rural areas of China by focusing on the coupling coordination mechanism between digital economy–agriculture integration and rural revitalization.By examining panel data from 30 Chinese provinces,autonomous regions,and municipalities between 2011 and 2022,the research constructs a weight-based evaluation system that integrates subjective and objective methods and a coupling coordination model to reveal its dynamic evolution patterns.Key findings indicate that digital economy–agriculture integration and rural revitalization achieve cross-coupling through critical activities.The impact of digital-agriculture integration on advancing rural revitalization lags by 2–3 years.Although the coupling development degree between the two systems continues to improve,it remains at the stage of primary coordination.Regional disparities are significant,showing a gradient pattern of“high degree of coupling development in the east and low degree of coupling development in the west.” 展开更多
关键词 digital economy-agriculture integration rural revitalization coupling coordination coupling development
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CAFTA 3.0:A Catalyst for Indonesia's Economic Ascent
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作者 Antony Hardi 《China Report ASEAN》 2026年第2期32-33,共2页
The shift to the China-ASEAN Free Trade Area(CAFTA)3.0 version marked more than just a technical update to an existing trade agreement.It signaled a recalibration ofregional economic cooperation as global trade has in... The shift to the China-ASEAN Free Trade Area(CAFTA)3.0 version marked more than just a technical update to an existing trade agreement.It signaled a recalibration ofregional economic cooperation as global trade has increasingly become shaped by digitalization,sustainability concerns,and fragile supply chains.For Indonesia,Southeast Asia’s largest economy and one of its most demographically dynamic,CAFTA 3.0 offers a framework that could materially strengthen its long-term economic position,if navigated with care and intent. 展开更多
关键词 SUSTAINABILITY supply chains recalibration ofregional economic cooperation CAFTA regional economic cooperation Indonesia economic ascent DIGITALIZATION
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