Objective:To systematically investigate the research status,research hotspots,and developmental trends of robotic techniques in stroke rehabilitation through bibliometric and visualization analysis.Methods:Literature ...Objective:To systematically investigate the research status,research hotspots,and developmental trends of robotic techniques in stroke rehabilitation through bibliometric and visualization analysis.Methods:Literature published in the Web of Science from 2004 to 2024 were screened.VOSviewer,CiteSpace,R Software,Microsoft Office Excel 2021,and“bibliometric.com”were employed to conduct bibliometric analysis and network visualization.Results:A total of 3,704 documents were retrieved.Northwestern University was the most productive institution.Krebs Hermano Igo was the most prolific author.The Journal of NeuroEngineering and Rehabilitation had the highest publication volume.The United States currently holds a leading position in various aspects,including the overall volume of publications,institutional contributions,author output,and funding support.Keywords such as“deep learning”“physical human-robot interaction”“wearable robotics”“mirror therapy”“telerehabilitation”“soft robotics”“augmented reality”“functional near-infrared spectroscopy,”and“impedance control”highlight the current research hotspots and frontiers.Conclusion:Rehabilitation robotics is a field with vigorous growth,progressively advancing toward intelligent,personalized,accessible,and efficient rehabilitation solutions with substantial future potential.展开更多
Objective To explore potential keywords,research clusters,collaborative pattern,and research trends in the field of medical technology management(MTM)through bibliometric analysis,providing insights for researchers,po...Objective To explore potential keywords,research clusters,collaborative pattern,and research trends in the field of medical technology management(MTM)through bibliometric analysis,providing insights for researchers,policy makers,and hospital administrators.Methods A retrieval formula was applied to the title,abstract,and keywords in the Web of Science(WoS)Core Collection,along with system-recommended terms,to identify articles on MTM.A total of 181 articles published between 1974 and 2022 were retained for quantitative analysis.The global trend of research output;total citations,average citations,and H-index;and bibliographic coupling,co-authorship,and keyword co-occurrence were analyzed using VOSviewer.Results The number of articles on MTM has been steadily increasing year by year.The focus of research has shifted from addressing basic medical needs to prioritizing emergency response and medical information security.The United States,Italy,and the United Kingdom emerged as the main contributors,with the United States leading in both volume of publications(60 articles)and academic impact(H-index=21).Authors from the United Kingdom and the United States led the way in cross-border cooperation.The top five institutions,ranked by total link strength among cross-institutional authors,were primarily located in Canada and Spain.Conclusions The field of MTM has experienced stable growth over the past three decades(1993-2022).The shift of research focus has prompted a heightened emphasis on protecting patient privacy and ensuring the security of medical data.Future research should emphasize interdisciplinary and professional collaboration,as well as international cooperation and open sharing of knowledge.展开更多
Traditional approaches to teaching the power system analysis course face challenges such as abstract and difficult-to-understand content,single teaching method,and limited practical links.In response,this paper explor...Traditional approaches to teaching the power system analysis course face challenges such as abstract and difficult-to-understand content,single teaching method,and limited practical links.In response,this paper explores in depth the significance and strategies of applying AI technology in the teaching of the course.The aim is to enhance students’ability to understand and apply knowledge,and to cultivate well-qualified technical professionals who can adapt to the intelligent development needs of the power industry.The proposed strategies include building an intelligent learning diagnosis platform,providing personalized learning guidance,developing an AI-integrated curriculum system,fostering a“dual-qualified and interdisciplinary”teaching team,and establishing a diversified assessment and evaluation system.展开更多
With the rapid development of the Internet and e-commerce,e-commerce platforms have accumulated huge amounts of user behavior data.The emergence of big data technology provides a powerful means for in-depth analysis o...With the rapid development of the Internet and e-commerce,e-commerce platforms have accumulated huge amounts of user behavior data.The emergence of big data technology provides a powerful means for in-depth analysis of these data and insight into user behavior patterns and preferences.This paper elaborates on the application of big data technology in the analysis of user behavior on e-commerce platforms,including the technical methods of data collection,storage,processing and analysis,as well as the specific applications in the construction of user profiles,precision marketing,personalized recommendation,user retention and churn analysis,etc.,and discusses the challenges and countermeasures faced in the application.Through the study of actual cases,it demonstrates the remarkable effectiveness of big data technology in enhancing the competitiveness of e-commerce platforms and user experience.展开更多
With the rapid development of artificial intelligence technology,the development of virtual reality technology has received increasing attention in various fields.Based on the difficulties in the course construction o...With the rapid development of artificial intelligence technology,the development of virtual reality technology has received increasing attention in various fields.Based on the difficulties in the course construction of“Virtual Reality Technology”,this paper adopts a questionnaire survey method to study the learning effects of students majoring in digital media technology at Guangxi University of Finance and Economics regarding the“Virtual Reality Technology”course.The research mainly involves four aspects:learning content,teaching effectiveness,learning experience,and future development needs.The research analysis in this paper not only provides strong support for the construction of a first-class course in“Virtual Reality Technology”but also offers references for the course construction of digital media technology majors in other universities.展开更多
A pilot plant integrating pervaporation membrane bioreactor and mechanical vapor compression for bioethanol production was designed and constructed in the study,with a bioethanol production of 300 t·a^(-1).Key eq...A pilot plant integrating pervaporation membrane bioreactor and mechanical vapor compression for bioethanol production was designed and constructed in the study,with a bioethanol production of 300 t·a^(-1).Key equipment in the process were designed based on bench test data.A pilot-scale fermenter with 20 m^(3) in volume,4 m in height and 2.5 m in diameter was designed based on geometric similarity criterion and power equality criterion.An integrated plate-frame membrane module with 105 plates was newly developed.Compared with conventional batch fermentation,the improvement of equipment utilization efficiency and the cell utilization efficiency can be expected as 1.5-2.0 times and 2-10 times,respectively,with waste water reduced by 70% to 85%.The high-exergy energy requirement for pilot plant was 57.5 k W,of which the broth preheater occupied 85.7%,following by the compressor 1.1%,pump1.9% and fermenter agitator 0.3%.The total energy requirement including distillation for producing 1 kg ethanol(95%(mass)) achieved an energy surplus of 15.6 MJ.展开更多
BACKGROUND The current study was to assess the application effects of conventional surgical techniques and ultrasound-guided precise localization technology for early gastric cancer(EGC),with an emphasis on long-term ...BACKGROUND The current study was to assess the application effects of conventional surgical techniques and ultrasound-guided precise localization technology for early gastric cancer(EGC),with an emphasis on long-term survival,postoperative complications,and surgical results.AIM To evaluate perioperative results,postoperative complications,and long-term survival in order to conduct a thorough comparison between conventional surgical techniques and ultrasound-guided precise localization technology for the treatment of EGC.METHODS Of 100 EGC patients were gathered,and they were subsequently divided into two groups based on the surgical technique used:The observation group(n=52)received surgery assisted by ultrasound-guided precise localization technology,whereas the control group(n=48)received traditional surgical treatment.The baseline characteristics were similar between the groups.Operation time,intraoperative hemorrhage,the number of lymph nodes removed,postoperative problems,survival rate,and other surgical and postoperative parameters were compared.RESULTS Compared with the control group,the observation group had significantly less intraoperative blood loss(80 mL vs 120 mL,P<0.05)and more dissected lymph nodes(28 vs 22,P<0.05).There were fewer postoperative complications in the observation group than in the routine group(8%vs 16%,P<0.05),hospitalization after surgery was shorter,and gastrointestinal function returned sooner.The long-term survival rates at 5 years and 3 years were significantly greater in the observation group than in the control group:82%and 88%vs 70%and 78%,respectively(P<0.05).CONCLUSION It is possible that ultrasound-guided accurate localization technology might be utilized more widely in clinical practice because it could significantly enhance the results of surgery for EGC,including reduced blood loss,better lymphadenectomy,lower complication rates,and improved survival rates.Further studies should aim to refine this technology and consider its utility in other types of oncologic surgery.展开更多
Plant diseases are a major threat that can severely impact the production of agriculture and forestry.This can lead to the disruption of ecosystem functions and health.With its ability to capture continuous narrow-ban...Plant diseases are a major threat that can severely impact the production of agriculture and forestry.This can lead to the disruption of ecosystem functions and health.With its ability to capture continuous narrow-band spectra,hyperspectral technology has become a crucial tool to monitor crop diseases using remote sensing.However,existing continuous wavelet analysis(CWA)methods suffer from feature redundancy issues,while the continuous wavelet projection algorithm(CWPA),an optimization approach for feature selection,has not been fully validated to monitor plant diseases.This study utilized rice bacterial leaf blight(BLB)as an example by evaluating the performance of four wavelet basis functions-Gaussian2,Mexican hat,Meyer,andMorlet-within theCWAandCWPAframeworks.Additionally,the classification models were constructed using the k-nearest neighbors(KNN),randomforest(RF),and Naïve Bayes(NB)algorithms.The results showed the following:(1)Compared to traditional CWA,CWPA significantly reduced the number of required features.Under the CWPA framework,almost all the model combinations achieved maximum classification accuracy with only one feature.In contrast,the CWA framework required three to seven features.(2)Thechoice of wavelet basis functions markedly affected the performance of themodel.Of the four functions tested,the Meyer wavelet demonstrated the best overall performance in both the CWPA and CWA frameworks.(3)Under theCWPAframework,theMeyer-KNNandMeyer-NBcombinations achieved the highest overall accuracy of 93.75%using just one feature.In contrast,under the CWA framework,the CWA-RF combination achieved comparable accuracy(93.75%)but required six features.This study verified the technical advantages of CWPA for monitoring crop diseases,identified an optimal wavelet basis function selection scheme,and provided reliable technical support to precisely monitor BLB in rice(Oryza sativa).Moreover,the proposed methodological framework offers a scalable approach for the early diagnosis and assessment of plant stress,which can contribute to improved accuracy and timeliness when plant stress is monitored.展开更多
At present, microelectro mechanical systems (MEMS) sensors have gradually replaced traditional mechanical sensors and are applied to several fields. Many developed countries pay high attention to technological innovat...At present, microelectro mechanical systems (MEMS) sensors have gradually replaced traditional mechanical sensors and are applied to several fields. Many developed countries pay high attention to technological innovation of MEMS sensors, and have applied a large number of patents since 2000. In this study, the patents of MEMS sensor from 2000 to 2015 are researched, the patents data is collected from Derwent Innovation Index (DII), and the method of co-classification analysis is used to investigate the technology cluster evolution of MEMS sensors. Results show that the technology diffusion occurrs in each technical field and the technology relevance between different technical fields is changed over time. On the whole, the evolution process of MEMS sensor is the manufacture and material of sensor chip, the electronic components and measuring function, the computing and control technology, and applications to biochemical field and communication.展开更多
Relying on the relevant data from China Statistical Yearbook and Chinese Rural Statistical Yearbook,the coolabarative performance of main body of agricutlural technology innovation is evaluated by taking quaternary-pa...Relying on the relevant data from China Statistical Yearbook and Chinese Rural Statistical Yearbook,the coolabarative performance of main body of agricutlural technology innovation is evaluated by taking quaternary-parties innovation body as the sujects and by establishing the index system from the perspectives of input and output.The results show serious dislocation of main body and bad collabrative performance.On the basis,the quaternary-parties motivation system cocerning agricutlural enterpises,agricutlural science and technology acanamy,rural hosueholds and governments is established.The system is capable of integrating market,sciencetific reserch and diffusion collection into a whole part and solving the seperation of agricutlural innovation supply and demand.展开更多
Nonflame combustion technology （NFCT） is a harmonious energy utilization technology. There are not environmental-unfriendly gases such as NOx, CO2 discharged in the whole combustion process. Combustion processes rea...Nonflame combustion technology （NFCT） is a harmonious energy utilization technology. There are not environmental-unfriendly gases such as NOx, CO2 discharged in the whole combustion process. Combustion processes realizes zero emission through this technology. Fe2O3 is involved as oxygen carrier, is examined thermodynamically, and the thermodynamic data of the redox reactions are calculated. Using the criteria of minimizing the Gibbs free energy, the equilibrium composition was investigated. The equilibrium analysis shows that producing complete oxidized resultants must have high molar ratio of Fe2O3/CH4. If quantity of Fe2O3 is not sufficient, more partial oxidized products such as CO, H2, even C will be produced.展开更多
2006 is the commencing year of the Eleventh Five-Year Plan for National Economic and Social Development, and also the fifth anniversary of China joining the World Trade Organization. After the development of the trans...2006 is the commencing year of the Eleventh Five-Year Plan for National Economic and Social Development, and also the fifth anniversary of China joining the World Trade Organization. After the development of the transition period in these years, China’s national economy has successfully inte grated into the global system. National economy remains de- veloping at a high speed. The total amount of import and export reached more than 1.4 trillion USD,展开更多
Oviductus Ranae is the dried oviduct of female Rana tem-poraria chensinensis （David）, distributed mainly in North- eastern China. Oviductus Ranae is one of the best-known and highly valued oriental foods and medicin...Oviductus Ranae is the dried oviduct of female Rana tem-poraria chensinensis （David）, distributed mainly in North- eastern China. Oviductus Ranae is one of the best-known and highly valued oriental foods and medicines. Traditional Chinese medicine holds that Oviductus Ranae can nourish yin, moisten lung and replenish the kidney essence. Meanwhile, activities of Oviductus Ranae such as anti-aging, anti-lipemic, anti-oxidation and anti-fatigue have also been demonstrated by modern phar-macological studies. Previous studies have shown that Oviductus Ranae is mainly composed of proteins, which are up to 50% or more.展开更多
Purpose： First, to review the state-of-the-art in patent citation analysis, particularly characteristics of patent citations to scientific literature （scientific non-patent references, SNPRs）. Second, to present a ...Purpose： First, to review the state-of-the-art in patent citation analysis, particularly characteristics of patent citations to scientific literature （scientific non-patent references, SNPRs）. Second, to present a novel mapping approach to identify technology-relevant research based on the papers cited by and referring to the SNPRs. Design/methodology/approach： In the review part we discuss the context of SNPRs such as the time lags between scientific achievements and inventions. Also patent-to-patent citation is addressed particularly because this type of patent citation analysis is a major element in the assessment of the economic value of patents. We also review the research on the role of universities and researchers in technological development, with important issues such as universities as sources of technological knowledge and inventor-author relations. We conclude the review part of this paper with an overview of recent research on mapping and network analysis of the science and technology interface and of technological progress in interaction with science. In the second part we apply new techniques for the direct visualization of the cited and citing relations of SNPRs, the mapping of the landscape around SNPRs by bibliographic coupling and co-citation analysis, and the mapping of the conceptual environment of SNPRs by keyword co-occurrence analysis. Findings： We discuss several properties of SNPRs. Only a small minority of publications covered by the Web of Science or Scopus are cited by patents, about 3%-4%. However, for publications based on university-industry collaboration the number of SNPRs is considerably higher, around 15%. The proposed mapping methodology based on a ＂second order SNPR approach＂ enables a better assessment of the technological relevance of research. Research limitations： The main limitation is that a more advanced merging of patent and publication data, in particular unification of author and inventor names, in still a necessity. Practical implications： The proposed mapping methodology enables the creation of a database of technology-relevant papers （TRPs）. In a bibliometric assessment the publications of research groups, research programs or institutes can be matched with the TRPs and thus the extent to which the work of groups, programs or institutes are relevant for technological development can be measured. Originality/value： The review part examines a wide range of findings in the research of patent citation analysis. The mapping approach to identify a broad range of technologyrelevant papers is novel and offers new opportunities in research evaluation practices.展开更多
In order to forecast promising technologies in the field of next generation mobile communication, various patent indicators were analyzed such as citation per patent, patent family information, patent share, increase ...In order to forecast promising technologies in the field of next generation mobile communication, various patent indicators were analyzed such as citation per patent, patent family information, patent share, increase rate, and patent activity. These indicators were quantified into several indexes and then integrated into an evaluation score to provide promising technologies. As a result of the suggested patent analysis, four technologies out of twenty two in details classification were selected, which showed outstanding technology competitiveness, high patent share and increasing rates as well as high recent-patent-ratios and triad-patent-family-ratios. Each of the selected technologies scored more than 10 points in total, and the following four technologies were suggested as promising ones in the field of next generation mobile communication: 1) 3GPP based mobile communication, 2) beyond 4G mobile communication, 3) IEEE 802.16 based mobile communication, which are in medium classification of broadband mobile communication system, and 4) testing/certification system of mobile communication, which is in medium classification of mobile communication testing/certification system.展开更多
Objective:The objective of this study is to explore the current situation,clinical research hot spots,and trends of traditional Chinese medicine(TCM)nursing technology in rheumatoid arthritis(RA),to draw a panorama of...Objective:The objective of this study is to explore the current situation,clinical research hot spots,and trends of traditional Chinese medicine(TCM)nursing technology in rheumatoid arthritis(RA),to draw a panorama of clinical research,to provide the basis and clues for subsequent high-level evidence integration and further in-depth research.Materials and Methods:Seven databases including China National Knowledge Infrastructure,Chinese Scientific Journal Database(VIP),Wanfang Database,Chinese Biomedical Literature Database(Sino-Med),PubMed,Embase,and the Cochrane Library were searched.The bibliometric method and visualization software CiteSpace were used to conduct a multi-dimensional analysis of the included literature.Results:A total of 805 pieces of literature were included(of them,one was written in German and four in English),and the number of published literature showed an increasing trend year by year.There were only 30(3.73%)pieces of literature published in nursing journals.The hot spots of the co-occurrence map were concentrated in:(1)the nursing of fumigation in RA;(2)the efficacy evaluation of TCM nursing technology on pain,joint malformation,and joint dysfunction caused by RA.The included literature themes focused on five TCM technologies:fumigation,moxibustion,acupoint patching,acupoint injection,and Chinese herbal soaking.The beginning year and strength in TCM fumigation were 2012 and 5.2,and those in moxibustion were 2011 and 3.38.Conclusion:The related studies are on the rise.It has entered the field of international readers with clear research hot spots.However,there are still shortcomings such as little literature published in Chinese nursing core journals,few non-Chinese-related documents,and a lack of international exchanges and cooperation.The current research hot spots in this field are TCM fumigation,and the cutting-edge trend of future research may be fumigation and moxibustion technology.It is suggested that further research can focus on evidence integration and original research on the self-optimization of these two techniques.展开更多
Purpose: This paper introduces an approach to technology evolution analysis using patent information based on Subject-Action-Object(SAO) structures.Design/methodology/approach: First, SAO structures were extracted fro...Purpose: This paper introduces an approach to technology evolution analysis using patent information based on Subject-Action-Object(SAO) structures.Design/methodology/approach: First, SAO structures were extracted from patent documents and were cleaned. Second, several dimension-reduction techniques were used to generate technology topics. Then, the hierarchical relationships between technology topics were calculated based on patent clustering. Finally, technology evolution maps were drawn by adding a timeline.Findings: This approach can reveal technology evolution processes from multiple perspectives than other approaches.Research limitations: The semantic annotation of an SAO type is not very accurate and the semantic types of technology topics need to be enriched.Practical implications: The approach can be applied to draw technology evolution maps using different types of technology topics such as problem or solution.Originality/value: This approach offers an analytical dimension and more details than existing techniques, and it helps identify fundamental and emerging technologies more accurately and comprehensively.展开更多
In order to analyze the electrostatic field concerned with electrostatic proximity fuze problem using the available finite analysis software package, the technology to model the problem with a scale reduction object a...In order to analyze the electrostatic field concerned with electrostatic proximity fuze problem using the available finite analysis software package, the technology to model the problem with a scale reduction object and boundary was presented. The boundary is determined by the maximum distance the sensor can detect. The object model is obtained by multiplying the terms in Poisson's equation with a scale reduction factor and the real value can be reconstructed with the same reverse process after software calculation. Using the finite element analysis program, the simulation value is close to the theoretical value with a little error. The boundary determination and scale reduction method is suitable to modeling the irregular electrostatic field around air targets, such as airplane, missile and so on, which is based on commonly used personal computer (PC). The technology reduces the calculation and storage cost greatly.展开更多
The pollution situation of different underlying surface and the change rule of each water quality index were researched,on the basis of rainwater quality monitoring by different approaches in a university campus. The ...The pollution situation of different underlying surface and the change rule of each water quality index were researched,on the basis of rainwater quality monitoring by different approaches in a university campus. The results showed that due to some factors,such as the underlying surface material pollution,road materials,road surface pollution condition and surrounding atmospheric environment quality,the pollution of different underlying surface rainwater would be different. Main pollutants of rainwater runoff in the city campus area were such as COD,SS,NH;-N,TP,etc. Ultimately,along with the increase of accumulated rainfall,the pollutants tended to gradually decrease. The road rain pollution was more serious than roof runoff pollution and the early rain pollution was serious,but the late rain water quality was much better. According to the rainwater conditions,subsequent rainwater recycling technology and processing technology were determined as a way to alleviate the problem of water shortage and water pollution.展开更多
文摘Objective:To systematically investigate the research status,research hotspots,and developmental trends of robotic techniques in stroke rehabilitation through bibliometric and visualization analysis.Methods:Literature published in the Web of Science from 2004 to 2024 were screened.VOSviewer,CiteSpace,R Software,Microsoft Office Excel 2021,and“bibliometric.com”were employed to conduct bibliometric analysis and network visualization.Results:A total of 3,704 documents were retrieved.Northwestern University was the most productive institution.Krebs Hermano Igo was the most prolific author.The Journal of NeuroEngineering and Rehabilitation had the highest publication volume.The United States currently holds a leading position in various aspects,including the overall volume of publications,institutional contributions,author output,and funding support.Keywords such as“deep learning”“physical human-robot interaction”“wearable robotics”“mirror therapy”“telerehabilitation”“soft robotics”“augmented reality”“functional near-infrared spectroscopy,”and“impedance control”highlight the current research hotspots and frontiers.Conclusion:Rehabilitation robotics is a field with vigorous growth,progressively advancing toward intelligent,personalized,accessible,and efficient rehabilitation solutions with substantial future potential.
文摘Objective To explore potential keywords,research clusters,collaborative pattern,and research trends in the field of medical technology management(MTM)through bibliometric analysis,providing insights for researchers,policy makers,and hospital administrators.Methods A retrieval formula was applied to the title,abstract,and keywords in the Web of Science(WoS)Core Collection,along with system-recommended terms,to identify articles on MTM.A total of 181 articles published between 1974 and 2022 were retained for quantitative analysis.The global trend of research output;total citations,average citations,and H-index;and bibliographic coupling,co-authorship,and keyword co-occurrence were analyzed using VOSviewer.Results The number of articles on MTM has been steadily increasing year by year.The focus of research has shifted from addressing basic medical needs to prioritizing emergency response and medical information security.The United States,Italy,and the United Kingdom emerged as the main contributors,with the United States leading in both volume of publications(60 articles)and academic impact(H-index=21).Authors from the United Kingdom and the United States led the way in cross-border cooperation.The top five institutions,ranked by total link strength among cross-institutional authors,were primarily located in Canada and Spain.Conclusions The field of MTM has experienced stable growth over the past three decades(1993-2022).The shift of research focus has prompted a heightened emphasis on protecting patient privacy and ensuring the security of medical data.Future research should emphasize interdisciplinary and professional collaboration,as well as international cooperation and open sharing of knowledge.
文摘Traditional approaches to teaching the power system analysis course face challenges such as abstract and difficult-to-understand content,single teaching method,and limited practical links.In response,this paper explores in depth the significance and strategies of applying AI technology in the teaching of the course.The aim is to enhance students’ability to understand and apply knowledge,and to cultivate well-qualified technical professionals who can adapt to the intelligent development needs of the power industry.The proposed strategies include building an intelligent learning diagnosis platform,providing personalized learning guidance,developing an AI-integrated curriculum system,fostering a“dual-qualified and interdisciplinary”teaching team,and establishing a diversified assessment and evaluation system.
文摘With the rapid development of the Internet and e-commerce,e-commerce platforms have accumulated huge amounts of user behavior data.The emergence of big data technology provides a powerful means for in-depth analysis of these data and insight into user behavior patterns and preferences.This paper elaborates on the application of big data technology in the analysis of user behavior on e-commerce platforms,including the technical methods of data collection,storage,processing and analysis,as well as the specific applications in the construction of user profiles,precision marketing,personalized recommendation,user retention and churn analysis,etc.,and discusses the challenges and countermeasures faced in the application.Through the study of actual cases,it demonstrates the remarkable effectiveness of big data technology in enhancing the competitiveness of e-commerce platforms and user experience.
基金Exploration and Research on the Construction of Teaching Resources for the“Virtual Reality Technology”Course in the Context of Artificial Intelligence。
文摘With the rapid development of artificial intelligence technology,the development of virtual reality technology has received increasing attention in various fields.Based on the difficulties in the course construction of“Virtual Reality Technology”,this paper adopts a questionnaire survey method to study the learning effects of students majoring in digital media technology at Guangxi University of Finance and Economics regarding the“Virtual Reality Technology”course.The research mainly involves four aspects:learning content,teaching effectiveness,learning experience,and future development needs.The research analysis in this paper not only provides strong support for the construction of a first-class course in“Virtual Reality Technology”but also offers references for the course construction of digital media technology majors in other universities.
基金supported by the National Key Research and Development Program of China(2021YFC2101204)the Natural Science Foundation of Sichuan Province(2025ZNSFSC0926)the Fundamental Research Funds for the Central Universities(2023SCU12080 and 20822041B4013)。
文摘A pilot plant integrating pervaporation membrane bioreactor and mechanical vapor compression for bioethanol production was designed and constructed in the study,with a bioethanol production of 300 t·a^(-1).Key equipment in the process were designed based on bench test data.A pilot-scale fermenter with 20 m^(3) in volume,4 m in height and 2.5 m in diameter was designed based on geometric similarity criterion and power equality criterion.An integrated plate-frame membrane module with 105 plates was newly developed.Compared with conventional batch fermentation,the improvement of equipment utilization efficiency and the cell utilization efficiency can be expected as 1.5-2.0 times and 2-10 times,respectively,with waste water reduced by 70% to 85%.The high-exergy energy requirement for pilot plant was 57.5 k W,of which the broth preheater occupied 85.7%,following by the compressor 1.1%,pump1.9% and fermenter agitator 0.3%.The total energy requirement including distillation for producing 1 kg ethanol(95%(mass)) achieved an energy surplus of 15.6 MJ.
基金Supported by Wenzhou Science and Technology Bureau,No.Y20240363.
文摘BACKGROUND The current study was to assess the application effects of conventional surgical techniques and ultrasound-guided precise localization technology for early gastric cancer(EGC),with an emphasis on long-term survival,postoperative complications,and surgical results.AIM To evaluate perioperative results,postoperative complications,and long-term survival in order to conduct a thorough comparison between conventional surgical techniques and ultrasound-guided precise localization technology for the treatment of EGC.METHODS Of 100 EGC patients were gathered,and they were subsequently divided into two groups based on the surgical technique used:The observation group(n=52)received surgery assisted by ultrasound-guided precise localization technology,whereas the control group(n=48)received traditional surgical treatment.The baseline characteristics were similar between the groups.Operation time,intraoperative hemorrhage,the number of lymph nodes removed,postoperative problems,survival rate,and other surgical and postoperative parameters were compared.RESULTS Compared with the control group,the observation group had significantly less intraoperative blood loss(80 mL vs 120 mL,P<0.05)and more dissected lymph nodes(28 vs 22,P<0.05).There were fewer postoperative complications in the observation group than in the routine group(8%vs 16%,P<0.05),hospitalization after surgery was shorter,and gastrointestinal function returned sooner.The long-term survival rates at 5 years and 3 years were significantly greater in the observation group than in the control group:82%and 88%vs 70%and 78%,respectively(P<0.05).CONCLUSION It is possible that ultrasound-guided accurate localization technology might be utilized more widely in clinical practice because it could significantly enhance the results of surgery for EGC,including reduced blood loss,better lymphadenectomy,lower complication rates,and improved survival rates.Further studies should aim to refine this technology and consider its utility in other types of oncologic surgery.
基金supported by the‘Pioneer’and‘Leading Goose’R&D Program of Zhejiang(Grant No.2023C02018)Zhejiang Provincial Natural Science Foundation of China(Grant No.LTGN23D010002)+2 种基金National Natural Science Foundation of China(Grant No.42371385)Funds of the Natural Science Foundation of Hangzhou(Grant No.2024SZRYBD010001)Nanxun Scholars Program of ZJWEU(Grant No.RC2022010755).
文摘Plant diseases are a major threat that can severely impact the production of agriculture and forestry.This can lead to the disruption of ecosystem functions and health.With its ability to capture continuous narrow-band spectra,hyperspectral technology has become a crucial tool to monitor crop diseases using remote sensing.However,existing continuous wavelet analysis(CWA)methods suffer from feature redundancy issues,while the continuous wavelet projection algorithm(CWPA),an optimization approach for feature selection,has not been fully validated to monitor plant diseases.This study utilized rice bacterial leaf blight(BLB)as an example by evaluating the performance of four wavelet basis functions-Gaussian2,Mexican hat,Meyer,andMorlet-within theCWAandCWPAframeworks.Additionally,the classification models were constructed using the k-nearest neighbors(KNN),randomforest(RF),and Naïve Bayes(NB)algorithms.The results showed the following:(1)Compared to traditional CWA,CWPA significantly reduced the number of required features.Under the CWPA framework,almost all the model combinations achieved maximum classification accuracy with only one feature.In contrast,the CWA framework required three to seven features.(2)Thechoice of wavelet basis functions markedly affected the performance of themodel.Of the four functions tested,the Meyer wavelet demonstrated the best overall performance in both the CWPA and CWA frameworks.(3)Under theCWPAframework,theMeyer-KNNandMeyer-NBcombinations achieved the highest overall accuracy of 93.75%using just one feature.In contrast,under the CWA framework,the CWA-RF combination achieved comparable accuracy(93.75%)but required six features.This study verified the technical advantages of CWPA for monitoring crop diseases,identified an optimal wavelet basis function selection scheme,and provided reliable technical support to precisely monitor BLB in rice(Oryza sativa).Moreover,the proposed methodological framework offers a scalable approach for the early diagnosis and assessment of plant stress,which can contribute to improved accuracy and timeliness when plant stress is monitored.
基金Supported by the Scientific Monitoring and Key Areas in-depth Investigation Analysis and Research(No.ZD2017-1)Science and Technology Major Specific Project Core Electronic Elements,High-General Chips and Basic Software(No.2015XM54)
文摘At present, microelectro mechanical systems (MEMS) sensors have gradually replaced traditional mechanical sensors and are applied to several fields. Many developed countries pay high attention to technological innovation of MEMS sensors, and have applied a large number of patents since 2000. In this study, the patents of MEMS sensor from 2000 to 2015 are researched, the patents data is collected from Derwent Innovation Index (DII), and the method of co-classification analysis is used to investigate the technology cluster evolution of MEMS sensors. Results show that the technology diffusion occurrs in each technical field and the technology relevance between different technical fields is changed over time. On the whole, the evolution process of MEMS sensor is the manufacture and material of sensor chip, the electronic components and measuring function, the computing and control technology, and applications to biochemical field and communication.
基金Supported by Qiqihar Key Projects of Social Philosophy"Research on Agricultural Technology Innovation system of Qiqihar City"(QSX2009B-04)
文摘Relying on the relevant data from China Statistical Yearbook and Chinese Rural Statistical Yearbook,the coolabarative performance of main body of agricutlural technology innovation is evaluated by taking quaternary-parties innovation body as the sujects and by establishing the index system from the perspectives of input and output.The results show serious dislocation of main body and bad collabrative performance.On the basis,the quaternary-parties motivation system cocerning agricutlural enterpises,agricutlural science and technology acanamy,rural hosueholds and governments is established.The system is capable of integrating market,sciencetific reserch and diffusion collection into a whole part and solving the seperation of agricutlural innovation supply and demand.
基金Supported by the National Natural Science Foundation of China (No. 50574046, No. 50164002.) and Science & TechnologyFoundation of Baoshan Iron and Steel Co. Ltd, Natural Science Foundation of Yunnan province (No. 2004E0012Q), High SchoolDoctoral Subject Special Science and Research Foundation of Ministry of Education (NO. 20040674005)
文摘Nonflame combustion technology （NFCT） is a harmonious energy utilization technology. There are not environmental-unfriendly gases such as NOx, CO2 discharged in the whole combustion process. Combustion processes realizes zero emission through this technology. Fe2O3 is involved as oxygen carrier, is examined thermodynamically, and the thermodynamic data of the redox reactions are calculated. Using the criteria of minimizing the Gibbs free energy, the equilibrium composition was investigated. The equilibrium analysis shows that producing complete oxidized resultants must have high molar ratio of Fe2O3/CH4. If quantity of Fe2O3 is not sufficient, more partial oxidized products such as CO, H2, even C will be produced.
文摘2006 is the commencing year of the Eleventh Five-Year Plan for National Economic and Social Development, and also the fifth anniversary of China joining the World Trade Organization. After the development of the transition period in these years, China’s national economy has successfully inte grated into the global system. National economy remains de- veloping at a high speed. The total amount of import and export reached more than 1.4 trillion USD,
基金supported by the National Key Technology Research and Development Program of the Ministry of Science and Technology of China (No. 2011BAI03B00)the National Science and Technology Major Project of the Ministry of Science and Technology of China (No. 2011ZX09401-305)
文摘Oviductus Ranae is the dried oviduct of female Rana tem-poraria chensinensis （David）, distributed mainly in North- eastern China. Oviductus Ranae is one of the best-known and highly valued oriental foods and medicines. Traditional Chinese medicine holds that Oviductus Ranae can nourish yin, moisten lung and replenish the kidney essence. Meanwhile, activities of Oviductus Ranae such as anti-aging, anti-lipemic, anti-oxidation and anti-fatigue have also been demonstrated by modern phar-macological studies. Previous studies have shown that Oviductus Ranae is mainly composed of proteins, which are up to 50% or more.
文摘Purpose： First, to review the state-of-the-art in patent citation analysis, particularly characteristics of patent citations to scientific literature （scientific non-patent references, SNPRs）. Second, to present a novel mapping approach to identify technology-relevant research based on the papers cited by and referring to the SNPRs. Design/methodology/approach： In the review part we discuss the context of SNPRs such as the time lags between scientific achievements and inventions. Also patent-to-patent citation is addressed particularly because this type of patent citation analysis is a major element in the assessment of the economic value of patents. We also review the research on the role of universities and researchers in technological development, with important issues such as universities as sources of technological knowledge and inventor-author relations. We conclude the review part of this paper with an overview of recent research on mapping and network analysis of the science and technology interface and of technological progress in interaction with science. In the second part we apply new techniques for the direct visualization of the cited and citing relations of SNPRs, the mapping of the landscape around SNPRs by bibliographic coupling and co-citation analysis, and the mapping of the conceptual environment of SNPRs by keyword co-occurrence analysis. Findings： We discuss several properties of SNPRs. Only a small minority of publications covered by the Web of Science or Scopus are cited by patents, about 3%-4%. However, for publications based on university-industry collaboration the number of SNPRs is considerably higher, around 15%. The proposed mapping methodology based on a ＂second order SNPR approach＂ enables a better assessment of the technological relevance of research. Research limitations： The main limitation is that a more advanced merging of patent and publication data, in particular unification of author and inventor names, in still a necessity. Practical implications： The proposed mapping methodology enables the creation of a database of technology-relevant papers （TRPs）. In a bibliometric assessment the publications of research groups, research programs or institutes can be matched with the TRPs and thus the extent to which the work of groups, programs or institutes are relevant for technological development can be measured. Originality/value： The review part examines a wide range of findings in the research of patent citation analysis. The mapping approach to identify a broad range of technologyrelevant papers is novel and offers new opportunities in research evaluation practices.
文摘In order to forecast promising technologies in the field of next generation mobile communication, various patent indicators were analyzed such as citation per patent, patent family information, patent share, increase rate, and patent activity. These indicators were quantified into several indexes and then integrated into an evaluation score to provide promising technologies. As a result of the suggested patent analysis, four technologies out of twenty two in details classification were selected, which showed outstanding technology competitiveness, high patent share and increasing rates as well as high recent-patent-ratios and triad-patent-family-ratios. Each of the selected technologies scored more than 10 points in total, and the following four technologies were suggested as promising ones in the field of next generation mobile communication: 1) 3GPP based mobile communication, 2) beyond 4G mobile communication, 3) IEEE 802.16 based mobile communication, which are in medium classification of broadband mobile communication system, and 4) testing/certification system of mobile communication, which is in medium classification of mobile communication testing/certification system.
基金supported by the Research Project on Medical Education launched by the Medical Education Branch of the Chinese Medical Association and the Medical Education Professional Committee of the Chinese Society of Higher Education in 2018(2018B-N18075)the Education Science Research Project of Beijing University of Chinese Medicine(XJYB2029)the Fundamental Research Funds for the Central Universities(2020-JYB-ZDGG-082).
文摘Objective:The objective of this study is to explore the current situation,clinical research hot spots,and trends of traditional Chinese medicine(TCM)nursing technology in rheumatoid arthritis(RA),to draw a panorama of clinical research,to provide the basis and clues for subsequent high-level evidence integration and further in-depth research.Materials and Methods:Seven databases including China National Knowledge Infrastructure,Chinese Scientific Journal Database(VIP),Wanfang Database,Chinese Biomedical Literature Database(Sino-Med),PubMed,Embase,and the Cochrane Library were searched.The bibliometric method and visualization software CiteSpace were used to conduct a multi-dimensional analysis of the included literature.Results:A total of 805 pieces of literature were included(of them,one was written in German and four in English),and the number of published literature showed an increasing trend year by year.There were only 30(3.73%)pieces of literature published in nursing journals.The hot spots of the co-occurrence map were concentrated in:(1)the nursing of fumigation in RA;(2)the efficacy evaluation of TCM nursing technology on pain,joint malformation,and joint dysfunction caused by RA.The included literature themes focused on five TCM technologies:fumigation,moxibustion,acupoint patching,acupoint injection,and Chinese herbal soaking.The beginning year and strength in TCM fumigation were 2012 and 5.2,and those in moxibustion were 2011 and 3.38.Conclusion:The related studies are on the rise.It has entered the field of international readers with clear research hot spots.However,there are still shortcomings such as little literature published in Chinese nursing core journals,few non-Chinese-related documents,and a lack of international exchanges and cooperation.The current research hot spots in this field are TCM fumigation,and the cutting-edge trend of future research may be fumigation and moxibustion technology.It is suggested that further research can focus on evidence integration and original research on the self-optimization of these two techniques.
文摘Purpose: This paper introduces an approach to technology evolution analysis using patent information based on Subject-Action-Object(SAO) structures.Design/methodology/approach: First, SAO structures were extracted from patent documents and were cleaned. Second, several dimension-reduction techniques were used to generate technology topics. Then, the hierarchical relationships between technology topics were calculated based on patent clustering. Finally, technology evolution maps were drawn by adding a timeline.Findings: This approach can reveal technology evolution processes from multiple perspectives than other approaches.Research limitations: The semantic annotation of an SAO type is not very accurate and the semantic types of technology topics need to be enriched.Practical implications: The approach can be applied to draw technology evolution maps using different types of technology topics such as problem or solution.Originality/value: This approach offers an analytical dimension and more details than existing techniques, and it helps identify fundamental and emerging technologies more accurately and comprehensively.
文摘In order to analyze the electrostatic field concerned with electrostatic proximity fuze problem using the available finite analysis software package, the technology to model the problem with a scale reduction object and boundary was presented. The boundary is determined by the maximum distance the sensor can detect. The object model is obtained by multiplying the terms in Poisson's equation with a scale reduction factor and the real value can be reconstructed with the same reverse process after software calculation. Using the finite element analysis program, the simulation value is close to the theoretical value with a little error. The boundary determination and scale reduction method is suitable to modeling the irregular electrostatic field around air targets, such as airplane, missile and so on, which is based on commonly used personal computer (PC). The technology reduces the calculation and storage cost greatly.
基金Supported by the"13th Five-year"Science and Technology Research Item of Jilin Education Department(Jijiaokehezi[2016]531)Student's Platform for Innovation and Entrepreneurship Training Program in Jilin Province in 2017(3430)
文摘The pollution situation of different underlying surface and the change rule of each water quality index were researched,on the basis of rainwater quality monitoring by different approaches in a university campus. The results showed that due to some factors,such as the underlying surface material pollution,road materials,road surface pollution condition and surrounding atmospheric environment quality,the pollution of different underlying surface rainwater would be different. Main pollutants of rainwater runoff in the city campus area were such as COD,SS,NH;-N,TP,etc. Ultimately,along with the increase of accumulated rainfall,the pollutants tended to gradually decrease. The road rain pollution was more serious than roof runoff pollution and the early rain pollution was serious,but the late rain water quality was much better. According to the rainwater conditions,subsequent rainwater recycling technology and processing technology were determined as a way to alleviate the problem of water shortage and water pollution.
