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Research on the Application of AI Computer-Aided Diagnosis in Dermatology
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作者 Xiaochun Zhang 《Journal of Clinical and Nursing Research》 2025年第12期105-110,共6页
With the development of artificial intelligence technology,AI computer-aided diagnosis has found certain applications in the field of dermatology.However,due to the vast variety and complex manifestations of skin dise... With the development of artificial intelligence technology,AI computer-aided diagnosis has found certain applications in the field of dermatology.However,due to the vast variety and complex manifestations of skin diseases,the specific mechanisms underlying AI computer-aided diagnosis in this context still require further exploration.Therefore,this paper,based on the imaging characteristics of skin diseases,elucidates the technical principles of AI computer-aided diagnosis and analyzes the practical application effects of AI in the diagnostic process of skin diseases.This provides new data support and methodological foundations for clinical teaching and research on skin diseases. 展开更多
关键词 AI computer-aided Skin disease diagnosis Image recognition Deep learning Intelligent healthcare
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Bridging the gap:Computer-aided detection and Yamada classification system matches expert performance
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作者 Lin Qiu Jian Ding +23 位作者 Chun-Xiao Lai Hui Yang Feng Li Zhi-Jian Li Wen Wu Gui-Ming Liu Quan-Sheng Guan Xi-Gang Zhang Rui-Ya Zhang Li-Zhi Yi Zhi-Fang Zhao Lv Deng Wei-Jian Lun Zhen-Yu Wang Wei-Ming Lu Wei-Guang Qiao Su-Ling Wang Si-Mei Chen Wen-Qian Shen Li-Min Cheng Ben-Gui Zhu Shun-Hui He Jie Dai Yang Bai 《World Journal of Gastroenterology》 2025年第40期86-96,共11页
BACKGROUND Computer-aided diagnosis(CAD)may assist endoscopists in identifying and classifying polyps during colonoscopy for detecting colorectal cancer.AIM To build a system using CAD to detect and classify polyps ba... BACKGROUND Computer-aided diagnosis(CAD)may assist endoscopists in identifying and classifying polyps during colonoscopy for detecting colorectal cancer.AIM To build a system using CAD to detect and classify polyps based on the Yamada classification.METHODS A total of 24045 polyp and 72367 nonpolyp images were obtained.We established a computer-aided detection and Yamada classification model based on the YOLOv7 neural network algorithm.Frame-based and image-based evaluation metrics were employed to assess the performance.RESULTS Computer-aided detection and Yamada classification screened polyps with a precision of 96.7%,a recall of 95.8%,and an F1-score of 96.2%,outperforming those of all groups of endoscopists.In regard to the Yamada classification of polyps,the CAD system displayed a precision of 82.3%,a recall of 78.5%,and an F1-score of 80.2%,outper-forming all levels of endoscopists.In addition,according to the image-based method,the CAD had an accuracy of 99.2%,a specificity of 99.5%,a sensitivity of 98.5%,a positive predictive value of 99.0%,a negative predictive value of 99.2%for polyp detection and an accuracy of 97.2%,a specificity of 98.4%,a sensitivity of 79.2%,a positive predictive value of 83.0%,and a negative predictive value of 98.4%for poly Yamada classification.CONCLUSION We developed a novel CAD system based on a deep neural network for polyp detection,and the Yamada classi-fication outperformed that of nonexpert endoscopists.This CAD system could help community-based hospitals enhance their effectiveness in polyp detection and classification. 展开更多
关键词 Yamada classification ENDOSCOPY Deep learning Artificial intelligence computer-aided diagnosis
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Neonatal Jaundice Detection:A Comprehensive Survey from Manual to Computer-Aided Methods
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作者 Navdeep Kaur Ajay Mittal Aastha Gupta 《Journal of Bionic Engineering》 2025年第6期2774-2804,共31页
Jaundice,common condition in newborns,is characterized by yellowing of the skin and eyes due to elevated levels of bilirubin in the blood.Timely detection and management of jaundice are crucial to prevent potential co... Jaundice,common condition in newborns,is characterized by yellowing of the skin and eyes due to elevated levels of bilirubin in the blood.Timely detection and management of jaundice are crucial to prevent potential complications.Traditional jaundice assessment methods rely on visual inspection or invasive blood tests that are subjective and painful for infants,respectively.Although several automated methods for jaundice detection have been developed during the past few years,a limited number of reviews consolidating these developments have been presented till date,making it essential to systematically evaluate and present the existing advancements.This paper fills this gap by providing a thorough survey of automated methods for jaundice detection in neonates.The primary focus of the survey is to review the existing methodologies,techniques,and technologies used for neonatal jaundice detection.The key findings from the review indicate that image-based bilirubinometers and transcutaneous bilirubinometers are promising non-invasive alternatives,and provide a good trade-off between accuracy and ease of use.However,their effectiveness varies with factors like skin pigmentation,gestational age,and measurement site.Spectroscopic and biosensor-based techniques show high sensitivity but need further clinical validation.Despite advancements,several challenges including device calibration,large-scale validation,and regulatory barriers still haunt the researchers.Standardization,regulatory compliances,and seamless integration into healthcare workflows are the key hurdles to be addressed.By consolidating the current knowledge and discussing the challenges and opportunities in this field,this survey aims to contribute to the advancement of automatic jaundice detection and ultimately improve neonatal care. 展开更多
关键词 Automated jaundice detection Bilirubin estimation Bilirubinometers computer-aided diagnosis HYPERBILIRUBINEMIA JAUNDICE NEONATES
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Diagnostic value of real-time computer-aided detection for precancerous lesion during esophagogastroduodenoscopy:A metaanalysis
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作者 Zong-Yang Li Ya-Hui Liu Hong-Qiao Cai 《World Journal of Gastrointestinal Surgery》 2025年第11期473-488,共16页
BACKGROUND Early detection of precancerous lesions is of vital importance for reducing the incidence and mortality of upper gastrointestinal(UGI)tract cancer.However,traditional endoscopy has certain limitations in de... BACKGROUND Early detection of precancerous lesions is of vital importance for reducing the incidence and mortality of upper gastrointestinal(UGI)tract cancer.However,traditional endoscopy has certain limitations in detecting precancerous lesions.In contrast,real-time computer-aided detection(CAD)systems enhanced by artificial intelligence(AI)systems,although they may increase unnecessary medical procedures,can provide immediate feedback during examination,thereby improving the accuracy of lesion detection.This article aims to conduct a meta-analysis of the diagnostic performance of CAD systems in identifying precancerous lesions of UGI tract cancer during esophagogastroduodenoscopy(EGD),evaluate their potential clinical application value,and determine the direction for further research.AIM To investigate the improvement of the efficiency of EGD examination by the realtime AI-enabled real-time CAD system(AI-CAD)system.METHODS PubMed,EMBASE,Web of Science and Cochrane Library databases were searched by two independent reviewers to retrieve literature with per-patient analysis with a deadline up until April 2025.A meta-analysis was performed with R Studio software(R4.5.0).A random-effects model was used and subgroup analysis was carried out to identify possible sources of heterogeneity.RESULTS The initial search identified 802 articles.According to the inclusion criteria,2113 patients from 10 studies were included in this meta-analysis.The pooled accuracy difference,logarithmic difference of diagnostic odds ratios,sensitivity,specificity and the area under the summary receiver operating characteristic curve(area under the curve)of both AI group and endoscopist group for detecting precancerous lesion were 0.16(95%CI:0.12-0.20),-0.19(95%CI:-0.75-0.37),0.89(95%CI:0.85-0.92,AI group),0.67(95%CI:0.63-0.71,endoscopist group),0.89(95%CI:0.84-0.93,AI group),0.77(95%CI:0.70-0.83,endoscopist group),0.928(95%CI:0.841-0.948,AI group),0.722(95%CI:0.677-0.821,endoscopist group),respectively.CONCLUSION The present studies further provide evidence that the AI-CAD is a reliable endoscopic diagnostic tool that can be used to assist endoscopists in detection of precancerous lesions in the UGI tract.It may be introduced on a large scale for clinical application to enhance the accuracy of detecting precancerous lesions in the UGI tract. 展开更多
关键词 Artificial intelligence Real-time computer-aided detection system Precancerous lesion ESOPHAGOGASTRODUODENOSCOPY ENDOSCOPY Upper gastrointestinal tract Diagnostic performance META-ANALYSIS
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《Journal of Iron and Steel Research International》征稿启事
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《钢铁研究学报》 北大核心 2026年第1期12-12,共1页
《Journal of Iron and Steel Research International》(中文刊名:钢铁研究学报(英文版),下文简称JISRI)是由中国钢铁工业协会主管、中国钢研科技集团有限公司主办的冶金领域学术期刊(CN11-3678/TF,ISSN1006-706X)。
关键词 Journal of Iron and Steel research 钢铁研究学报
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Correction:M apping the global research trends and hotspots on hypertensive nephropathy:A novel bibliometrics overview
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作者 Yi-Ping Wu Lu-Da Feng +5 位作者 Yun Zhao Man-Rui Wang Jia-You Liu Bo-Yang Li Bo-Ya Zhang Jian-Guo Qin 《Medical Data Mining》 2026年第1期59-60,共2页
Medical Data Mining published an article entitled Mapping the global research trends and hotspots on hypertensive nephropathy:A novel bibliometrics overview on 10 October 2025.The author confirmed this article’s proo... Medical Data Mining published an article entitled Mapping the global research trends and hotspots on hypertensive nephropathy:A novel bibliometrics overview on 10 October 2025.The author confirmed this article’s proof on 28 September 2025 without any questions.However,on 13 November 2025,the Editorial Office of Medical Data Mining noticed an inconsistency between the data presented in the main text and Figure 1.Specifically,erroneous Figure 1 states“a total of 56,691 literatures were obtained through database search”,while the main text in the Search results section states“According to the search term,a total of 59,220 publications were retrieved from the database.”The authors acknowledge that the original version of Figure 1 was incorrect and have provided the revised,correct version in this corrigendum.The authors would like to assert that there is no change in the body text of the article. 展开更多
关键词 HOTSPOTS global research trends hotspots data mining bibliometrics overview research trends hypertensive nephropathy medical data mining BIBLIOMETRICS
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Navigating physical activity research in complex terrains:Reflections on the challenges,opportunities,and future directions
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作者 Ding Ding 《Journal of Sport and Health Science》 2026年第3期3-5,共3页
In 2025,I had the honor of delivering keynote speeches at the conferences of the International Society for Diet and Activity Methods in Toronto,Canada,and the International Society of Behavioural Nutrition and Physica... In 2025,I had the honor of delivering keynote speeches at the conferences of the International Society for Diet and Activity Methods in Toronto,Canada,and the International Society of Behavioural Nutrition and Physical Activity in Auckland,Aotearoa,New Zealand.These opportunities prompted deep reflection on scientific research in general,and on physical activity and health research specifically. 展开更多
关键词 scientific research complex terrains future directions diet activity methods research challenges physical activity behavioural nutrition physical activity
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Developing successful international collaborations in Earth Science research
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作者 Walter D.Mooney 《Earthquake Science》 2026年第1期118-124,共7页
I offer suggestions to increase the probability of success of an international research project.Collaborative studies often produce more innovative and transformative scientific results than work done by a single inve... I offer suggestions to increase the probability of success of an international research project.Collaborative studies often produce more innovative and transformative scientific results than work done by a single investigator or an isolated team.My advice is intended for early-career scientists.The product of the collaboration may be high-impact research publications,enhanced geophysical monitoring capabilities in a foreign country,or an advanced training course.Choosing the right international partner is the most important step.Keeping an open mind and being receptive to suggestions to modify the initial concept is critical.Other key steps include having a mutually agreed upon plan with achievable goals and well-defined expected outcomes.International cooperation is a richly rewarding experience that accelerates progress in the Earth Sciences. 展开更多
关键词 earth science research geophysical monitoring capabilities research projectcollaborative studies international collaborations advanced training coursechoosing scientific results successful collaborations international partner
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Design and performance of the soft X-ray energy materials research beamline at SSRF
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作者 Zhen-Hua Chen Li-Min Zhou +3 位作者 Hai-Tao Li Ying Zou Yong Wang Ren-Zhong Tai 《Nuclear Science and Techniques》 2026年第2期55-66,共12页
A soft X-ray energy materials research beamline(BL20U2),a branch of energy materials beamline(E-line),has been constructed in the Shanghai Synchrotron Radiation Facility(SSRF)Phase-Ⅱ project.It is now operational for... A soft X-ray energy materials research beamline(BL20U2),a branch of energy materials beamline(E-line),has been constructed in the Shanghai Synchrotron Radiation Facility(SSRF)Phase-Ⅱ project.It is now operational for soft X-ray resonant emission spectroscopy(RXES)and soft X-ray resonant elastic scattering(REXS)investigations.Optical optimization was implemented for high performance,e.g.,photon flux,energy-resolving power,and focus spot size.RXES experiments show that the energy range extends from 150 to 1500 eV.The elastic peak measured near titanium absorption edge(@445 eV)indicates an energy resolution of the RXES spectrometer of 65 meV.The measured photon flux is 3×10^(12)photons/s at 244 eV at the RXES sample position for an SSRF electron energy of 3.5 GeV and a projected ring current as 300 mA.The spot size at the RXES sample position is 23μm in the horizontal direction and 7.9μm in the vertical direction,respectively.Moreover,the angular resolution of elastic REXS scatterometer reaches 0.005°through measurement of X-ray reflection from the single-crystal silicon wafers.A sample of the REXS scatterometer is vibrationally decoupled from its chamber and cooled using copper braids connected from an open cycle liquid helium cryo reservoir,whereas the minimum sample temperature is below 15 K. 展开更多
关键词 Synchrotron radiation Materials research beamline Wide-energy range E-line SSRF
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Qualitative Research on the Current Implementation Status and Barriers of Nurses’Non-Pharmacological Prescription Authority
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作者 Ying Li Yulin Lu +3 位作者 Yanxia Shang Ling Huang Panpan Cui Pingxi Yang 《Journal of Clinical and Nursing Research》 2026年第1期331-337,共7页
Objective:To systematically review the current implementation status of nurses’non-pharmacological prescription authority and analyze the barriers encountered during its implementation in China,providing countermeasu... Objective:To systematically review the current implementation status of nurses’non-pharmacological prescription authority and analyze the barriers encountered during its implementation in China,providing countermeasures and references for promoting the standardized implementation of nurses’non-pharmacological prescription authority.Methods:A secondary analysis of literature was conducted to systematically search for domestic and international literature related to nurses’non-pharmacological prescription authority.Meta-analysis was performed on eligible literature to evaluate the implementation effects.Simultaneously,semi-structured in-depth interviews were conducted with healthcare workers,patients,and policymakers.Content analysis was used to organize the interview data and extract core issues and barriers.Results:A total of 46 international articles were included in the Meta-analysis,which revealed that the implementation of nurses’non-pharmacological prescription authority significantly improved patients’health management outcomes,enhanced healthcare service efficiency,and increased patient satisfaction.Conclusion:The implementation of nurses’non-pharmacological prescription authority has demonstrated significant positive effects.However,China faces multiple barriers in its advancement,necessitating efforts in optimizing policy systems,constructing collaborative models,strengthening professional skills training,and improving social awareness to guide the scientific and rational implementation of nurses’non-pharmacological prescription authority. 展开更多
关键词 Nurses Non-pharmacological prescription authority Implementation status Barrier factors Qualitative research
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The application and prospects of spatial omics technologies in clinical medical research and molecular diagnostics
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作者 Xiaofeng Wu Weize Xu +4 位作者 Da Lin Leqiang Sun Lit-Hsin Loo Jinxia Dai Gang Cao 《Journal of Genetics and Genomics》 2026年第2期181-196,共16页
While conventional FISH and IHC methods struggle to decode complex tissue heterogeneity and comprehensive molecular diagnosis due to low-throughput spatial information,spatial omics technologies enable high-throughput... While conventional FISH and IHC methods struggle to decode complex tissue heterogeneity and comprehensive molecular diagnosis due to low-throughput spatial information,spatial omics technologies enable high-throughput molecular mapping across tissue microenvironments.These technologies are emerging as transformative tools in molecular diagnostics and medical research.By integrating histopathological morphology with spatial multi-omics profiling(genome,transcriptome,epigenome,and proteome),spatial omics technologies open an avenue for understanding disease progression,therapeutic resistance mechanisms,and precise diagnosis.It particularly enhances tumor microenvironment analysis by mapping immune cell distributions and functional states,which may greatly facilitate tumor molecular subtyping,prognostic assessment,and prediction of the radiotherapy and chemotherapy efficacy.Despite the substantial advancements in spatial omics,the translation of spatial omics into clinical applications remains challenging due to robustness,efficacy,clinical validation,and cost constraints.In this review,we summarize the current progress and prospects of spatial omics technologies,particularly in medical research and diagnostic applications. 展开更多
关键词 Spatial omics Multi-omics Molecular diagnostics Clinical medical research Precise medicine
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Research on the Pathways of China–Africa Educational Cooperation in Promoting Africa's Modernization Development in the New Era
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作者 Chen Jie Liu Liyun 《Contemporary Social Sciences》 2026年第1期1-17,共17页
Educational cooperation,as the cornerstone and vanguard of people-to-people exchanges and practical cooperation between China and Africa,holds irreplaceable strategic significance for enhancing the quality of Africa&#... Educational cooperation,as the cornerstone and vanguard of people-to-people exchanges and practical cooperation between China and Africa,holds irreplaceable strategic significance for enhancing the quality of Africa's human capital and accelerating its structural transformation and modernization process.This paper employs“demand–supply–adaptation”as its core analytical framework and aims to systematically explore how the educational cooperation between China and Africa can serve Africa's goal of modernization more precisely and effectively.First,through reviewing and analyzing the domestic and international research literature,this paper clarifies the focus,paradigms,and shortcomings of existing research,identifying the knowledge contribution of this study.Second,utilizing detailed macro-level data,case studies,and comparative research methods,it comprehensively presents the multidimensional status,structural characteristics,and development trends of China–Africa educational cooperation in areas such as student exchanges,cooperative education,vocational and technical training,language and cultural exchange,and emerging digital education.This paper also deeply analyzes the pressing and specific demands placed on the education system by Africa's modernization development across key dimensions like economic diversification,industrialization,agricultural modernization,social governance upgrading,and digital transformation.Third,based on the cooperative principle of“Africa's needs and China's strengths,”this paper innovatively proposes systematic countermeasures and suggestions for constructing new,multi-level,high-quality,sustainable,and future-oriented pathways for China–Africa educational cooperation:(a)promoting the strategic focus of cooperation to extend from“hard infrastructure”support to empowering“soft infrastructure”;(b)deepening the integration of industry and education and school–enterprise collaboration to precisely align with Africa's industrial development needs;vigorously developing digital education and jointly building a smart education ecosystem to help Africa bridge the digital divide;(c)improving an evidence-based,third-party evaluation system for cooperative effectiveness and a full-process quality assurance system;and(d)promoting the collaborative participation of multiple actors including governments,schools,enterprises,think tanks,and social organizations to build a new cooperative pattern of coconstruction,co-governance,and shared benefits. 展开更多
关键词 China-Africa relations educational cooperation Africa’s modernization pathway research
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Nanjing:From Manufacturing Base to Research Hub
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作者 ZHAO PIAO 《China Today》 2026年第1期48-49,共2页
Nanjing’s determination to transform itself from a production base to a research center reflects China’s evolution toward higher-quality development.A refrigerator that thaws frozen meat in 10 minutes and then keeps... Nanjing’s determination to transform itself from a production base to a research center reflects China’s evolution toward higher-quality development.A refrigerator that thaws frozen meat in 10 minutes and then keeps it fresh,a cooker hood that remains clean even after 10 years without disassembling it for cleaning. 展开更多
关键词 thaws frozen meat cooker hood high quality development manufacturing research transformation REFRIGERATOR
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Potential of in vitro microelectrode arrays in Alzheimer's disease research
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作者 Aoife O’Connell Andrea Kwakowsky 《Neural Regeneration Research》 2026年第5期1993-1994,共2页
Alzheimer's disease (AD) is a progressive neurodegenerative disorder and is the most prominent cause of dementia.In 2019,over 57.4million people were living with AD and other dementia subtypes,a number which is ex... Alzheimer's disease (AD) is a progressive neurodegenerative disorder and is the most prominent cause of dementia.In 2019,over 57.4million people were living with AD and other dementia subtypes,a number which is expected to increase to over 152.8 million in the next 25years.This ever-increasing burden has resulted in AD and other neurodegenerative diseases rising to one of the top 10 causes of death globally (O'Connell et al.,2024). 展开更多
关键词 neurodegenerative diseases vitro microelectrode arrays global burden research alzheimers disease neurodegenerative disorder DEMENTIA Alzheimers disease
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Theoretical and Practical Exploration on Strengthening Party Building in the New Era to Lead the High-quality Development of Fruit Tree Research:A Case Study of the Changli Institute of Pomology,Hebei Academy of Agriculture and Forestry Sciences
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作者 Lixian CUI Jinli LIU 《Asian Agricultural Research》 2026年第1期58-60,共3页
Taking the Changli Institute of Pomology,Hebei Academy of Agriculture and Forestry Sciences(hereinafter referred to as the Changli Institute of Pomology)as a case study,this paper explores the practical pathways throu... Taking the Changli Institute of Pomology,Hebei Academy of Agriculture and Forestry Sciences(hereinafter referred to as the Changli Institute of Pomology)as a case study,this paper explores the practical pathways through which Party building leads to the high-quality development of fruit tree research from three dimensions:theoretical convergence points,current development status,and functional mechanisms.It proposes that Party building should focus on its core roles of steering political direction,enhancing team cohesion,and upholding ethical standards.Deep integration of Party building and scientific research should be achieved through concrete platforms,with the effectiveness measured by breakthroughs in critical"bottleneck"technologies and increased income for fruit growers.The study aims to provide a practical reference for integrating Party building with professional work in the agricultural research sector. 展开更多
关键词 Party building leadership Fruit tree research High-quality development Theory and practice Changli Institute of Pomology
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Computer-Aided Translation Technology and Translation Teaching 被引量:1
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作者 王红艾 《海外英语》 2011年第15期158-159,161,共3页
With the development of computer technology, Computer-Aided Translation(CAT) is widely used in the translation process, thus increasing the efficiency of the entire translation work. The purpose of this article is to ... With the development of computer technology, Computer-Aided Translation(CAT) is widely used in the translation process, thus increasing the efficiency of the entire translation work. The purpose of this article is to analyze the importance of introducing CAT technology into translation teaching and explore some ways of integrating CAT technology with translation teaching, so as to improve the quality of the translators and the translation work. 展开更多
关键词 computer-aided TRANSLATION TRANSLATION TEACHING TRANSLATION EFFICIENCY
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Computer-aided Translation Technology and Its Applications
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作者 汪美侠 何大顺 《海外英语》 2014年第5X期170-172,共3页
This article begins with a brief analysis of the significance of translation technology in different spheres of modern life,followed by a distinction between machine translation(MT)and computer-aided translation(CAT).... This article begins with a brief analysis of the significance of translation technology in different spheres of modern life,followed by a distinction between machine translation(MT)and computer-aided translation(CAT).It then describes some translation resources and tools and examines the negative and positive aspects of computer-aided translations.Finally it comes to a conclusion that it would be greatly efficient and productive for the translators to acquire the new skills in the translation workplace. 展开更多
关键词 MACHINE TRANSLATION computer-aided TRANSLATION APP
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The computer-aided design method of cabinet based on style imagery 被引量:2
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作者 沈张帆 薛澄岐 +3 位作者 王海燕 牛亚峰 邵将 张晶 《Journal of Southeast University(English Edition)》 EI CAS 2015年第3期369-374,共6页
Due to the practical problems of the high costs and the long development cycle of China’s cabinet production,a computer-aided design method of the cabinet based on style imagery is proposed.According to the principle... Due to the practical problems of the high costs and the long development cycle of China’s cabinet production,a computer-aided design method of the cabinet based on style imagery is proposed.According to the principle of the conjoint analysis method, the rough set theory and the weight coefficient of different components of the cabinet,a multi-dimensional model of style imagery to evaluate the cabinet is built. Then the related constants of style imagery are calculated and the cabinet components library is also built by the three-dimensional modeling.Finally,with recombinant technology and the mapping model between cabinet style and external characteristics,the prototype system based on Visual Studio is proposed.This system actualizes the bidirectional reasoning between product style imagery and the shape features,which can assist designers to produce more creative designs,greatly improve the efficiency of cabinet development and increase the profits of companies. 展开更多
关键词 CABINET computer-aided design style imagery component recombinant shape features
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Using shapes correlation for active contour segmentation of uterine fibroid ultrasound images in computer-aided therapy 被引量:14
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作者 NI Bo HE Fa-zhi +1 位作者 PAN Yi-teng YUAN Zhi-yong 《Applied Mathematics(A Journal of Chinese Universities)》 SCIE CSCD 2016年第1期37-52,共16页
Segmenting the lesion regions from the ultrasound (US) images is an important step in the intra-operative planning of some computer-aided therapies. High-Intensity Focused Ultrasound (HIFU), as a popular computer-... Segmenting the lesion regions from the ultrasound (US) images is an important step in the intra-operative planning of some computer-aided therapies. High-Intensity Focused Ultrasound (HIFU), as a popular computer-aided therapy, has been widely used in the treatment of uterine fibroids. However, such segmentation in HIFU remains challenge for two reasons: (1) the blurry or missing boundaries of lesion regions in the HIFU images and (2) the deformation of uterine fibroids caused by the patient's breathing or an external force during the US imaging process, which can lead to complex shapes of lesion regions. These factors have prevented classical active contour-based segmentation methods from yielding desired results for uterine fibroids in US images. In this paper, a novel active contour-based segmentation method is proposed, which utilizes the correlation information of target shapes among a sequence of images as prior knowledge to aid the existing active contour method. This prior knowledge can be interpreted as a unsupervised clustering of shapes prior modeling. Meanwhile, it is also proved that the shapes correlation has the low-rank property in a linear space, and the theory of matrix recovery is used as an effective tool to impose the proposed prior on an existing active contour model. Finally, an accurate method is developed to solve the proposed model by using the Augmented Lagrange Multiplier (ALM). Experimental results from both synthetic and clinical uterine fibroids US image sequences demonstrate that the proposed method can consistently improve the performance of active contour models and increase the robustness against missing or misleading boundaries, and can greatly improve the efficiency of HIFU therapy. 展开更多
关键词 Active contour shapes correlation ultrasound image segmentation matrix recovery computer-aided therapy.
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Application of computer-aided engineering optimum design method in aluminum profile extrusion mould 被引量:8
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作者 帅词俊 肖刚 +1 位作者 倪正顺 钟掘 《Journal of Central South University of Technology》 2003年第1期64-68,共5页
The finite element analysis and the optimum design of aluminum profile extrusion mould were investigated using the ANSYS software and its parameterized modeling method. The optimum dimensions of the mould were obtaine... The finite element analysis and the optimum design of aluminum profile extrusion mould were investigated using the ANSYS software and its parameterized modeling method. The optimum dimensions of the mould were obtained. It is found that the stress distribution is very uneven, and the stress convergence is rather severe in the bridge of the aluminum profile extrusion mould. The optimum height of the mould is 70.527 mm, and the optimum radius of dividing holes are 70.182 mm and 80.663 mm. Increasing the height of the mould in the range of 61.282 mm to 70.422 mm can prolong its longevity, but when the height is over 70.422 mm, its longevity reduces. 展开更多
关键词 EXTRUSION MOULD computer-aided ENGINEERING OPTIMUM design ANSYS
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