This paper comprehensively explores the technical principles and application practice of Sainaoning absorbable dural sealant medical adhesive in dural closure.It elaborates on the research and development background o...This paper comprehensively explores the technical principles and application practice of Sainaoning absorbable dural sealant medical adhesive in dural closure.It elaborates on the research and development background of Sainaoning,analyzes its composition,action mechanism,and product characteristics in detail,and presents the results of pre-clinical and clinical studies.The application of Sainaoning in different craniotomy surgeries is discussed,and its effectiveness and safety are evaluated.The paper also analyzes the challenges in its application and proposes corresponding countermeasures,aiming to provide a comprehensive understanding and reference for the clinical use and further development of Sainaoning.展开更多
In the context of energy structure transformation,digital and intelligent technologies have been introduced into the field of hydropower,which has accelerated the technological and equipment innovation of hydropower p...In the context of energy structure transformation,digital and intelligent technologies have been introduced into the field of hydropower,which has accelerated the technological and equipment innovation of hydropower plants.However,it has also brought severe challenges to the operation and maintenance of hydropower plants.Traditional hydropower plant operation and maintenance suffer from problems such as low efficiency,equipment aging,and high labor costs,which seriously hinder the innovation and upgrading of hydropower plant operation and maintenance.Therefore,this article focuses on the operation and maintenance of hydropower plants,summarizes a series of innovative strategies,and applies them in practice to effectively improve the operation and maintenance level of hydropower plants.展开更多
The theoretical research of cable-driven mechanisms is developed with its broad applications. The first prototype of cable-driven mechanisms is RoboCrane, which was developed by the National Institute of Standards and...The theoretical research of cable-driven mechanisms is developed with its broad applications. The first prototype of cable-driven mechanisms is RoboCrane, which was developed by the National Institute of Standards and Technology （NIST）. Then many excellent properties were developed and they have a variety of applications such as aerospace, aircraft and automobile industries [1]. Example application for RoboCrane in the field of aircraft mainte- nance is equipped with a quick-change mechanism to remove the robot arm remotely.展开更多
The application of TBL teaching method to"Zhuang Medical Prescriptions"is an actual practice of group cooperative learning mode.Through this method,a more active learning atmosphere can be constructed,and it...The application of TBL teaching method to"Zhuang Medical Prescriptions"is an actual practice of group cooperative learning mode.Through this method,a more active learning atmosphere can be constructed,and it is also an activity to jointly achieve the teaching goals.From the perspective of the practice of basic teaching,it is a creative teaching strategy.Let students develop the awareness and habit of using team groups for cooperative inquisitive learning,so as to gradually improve students'level of comprehensive application analysis.This paper discusses in detail from the perspective of practical research and building,and compares data under different teaching methods with test results to prove that TBL teaching method is superior to traditional teaching method.展开更多
The "Application of Standards for Equipment-Manufacturing Industry Workshop" was held for two days in Shanghai from May 25th to May 26th, 2007. Dozens of delegates from famous enterprises and organizatio... The "Application of Standards for Equipment-Manufacturing Industry Workshop" was held for two days in Shanghai from May 25th to May 26th, 2007. Dozens of delegates from famous enterprises and organizations around the world participated, including those from Shell China Ltd., Leal China, Siemens Ltd. China Corporate, and Assurance of SAI Global and SGS . Nine experts, engaged in standardization, intellectual property, and related fields, gave speeches on "Standards and Best Practices," and many illustrative examples of the application of standards were provided.……展开更多
At present, the speed of social development is accelerating, and the pressure of competition among enterprises within the industry is increasing. If an enterprise wants to achieve long-term and stable development, it ...At present, the speed of social development is accelerating, and the pressure of competition among enterprises within the industry is increasing. If an enterprise wants to achieve long-term and stable development, it needs to do a good job in internal financial management. Enterprise management accounting should formulate target plans and relevant policies according to the actual situation of enterprise development, effectively carry out high-quality enterprise financial management, and comprehensively promote the development and progress of enterprises.展开更多
Under the new curriculum reform, the traditional indoctrination teaching method has not adapted to the development of society, and it is difficult to meet the learning needs of students. Interactive teaching method ha...Under the new curriculum reform, the traditional indoctrination teaching method has not adapted to the development of society, and it is difficult to meet the learning needs of students. Interactive teaching method has been introduced into junior high school English teaching, which has innovated classroom teaching methods, brought more opportunities for junior high school students to explore independently, and created a knowledgeable and open English classroom. Students have become the real masters of the classroom. The new English curriculum standard for junior middle schools puts forward that English teaching should be geared to all students, keep the language learning asymptotic and continuous, form innovative consciousness, develop scientific spirit and cultivate positive emotional attitudes and values. However, in the current junior high school English teaching practice, there are still some problems in interactive teaching, and English teachers need to take measures to improve them. Therefore, in daily teaching, junior high school English teachers should change the traditional teaching methods, create an open English classroom and enhance the interaction between teachers and students. On the one hand, they should cultivate junior high school students listening, speaking, reading and writing abilities;on the other hand, they should exercise their English thinking and accomplishment so that junior high school students can express and use English skillfully in real life.展开更多
Surveying and mapping engineering technology in the process of real estate surveying, can provide corresponding support from the technical level, select the appropriate engineering technology, can also give full play ...Surveying and mapping engineering technology in the process of real estate surveying, can provide corresponding support from the technical level, select the appropriate engineering technology, can also give full play to the advantages and role of surveying and mapping engineering, to ensure the efficiency and accuracy of surveying and mapping engineering technology for information data acquisition.展开更多
The application of digital technology in prosthodontics not only improves the accuracy of restoration and the efficiency of diagnosis and treatment,but also brings more comfortable and convenient diagnosis and treatme...The application of digital technology in prosthodontics not only improves the accuracy of restoration and the efficiency of diagnosis and treatment,but also brings more comfortable and convenient diagnosis and treatment experience to patients.It effectively promotes the rapid development of the prosthodontic aesthetics industry and leads prosthodontic technology to gradually enter a new digital era.Combining the advantages of digital technology in prosthodontics,this paper focuses on the specific applications of digital impression technology,CAD/CAM technology,network-based integrated cloud service technology,and CBCT technology in prosthodontics.On this basis,it prospects the development trend of digital technology in the field of prosthodontics,aiming to provide solid theoretical and practical support for clinical practice of prosthodontics and promote the gradual integration of the prosthodontic industry with the digital era.展开更多
Transition metals have garnered significant attention for their roles in addressing energy shortages and environmental water pollution.Their multivalent states and unique electron transfer properties facilitate charge...Transition metals have garnered significant attention for their roles in addressing energy shortages and environmental water pollution.Their multivalent states and unique electron transfer properties facilitate charge transfer in the conversion reaction,expedite energy conversion,and achieve low-energy water treatment.This review comprehensively explores the fundamental mechanisms and practical applications of transition metals in water treatment,including adsorption,photocatalysis,electrocatalysis,photoelectrocatalysis,and other technologies.The feasibility of water treatment using transition metal-based materials is demonstrated through theoretical studies on typical transition metals employed in these water treatment technologies while emphasizing the potential for optimizing material performance through strategies like structural design,defect engineering,crystal engineering,composite materials,surface modification,and atomic catalysts.In addition,the utilization of transition metal-based materials in practical wastewater treatment is comprehensively reviewed.Finally,the challenges and perspectives of transition metal-based materials in practical wastewater treatment are outlined,providing a theoretical foundation and guidance for future research and engineering advancements.展开更多
As globalization accelerates,microbial contamination in the built environment poses a major public health challenge.Especially since Corona Virus Disease 2019(COVID-19),microbial sterilization technology has become a ...As globalization accelerates,microbial contamination in the built environment poses a major public health challenge.Especially since Corona Virus Disease 2019(COVID-19),microbial sterilization technology has become a crucial research area for indoor air pollution control in order to create a hygienic and safe built environment.Based on this,the study reviews sterilization technologies in the built environment,focusing on the principles,efficiency and applicability,revealing advantages and limitations,and summarizing current research advances.Despite the efficacy of single sterilization technologies in specific environments,the corresponding side effects still exist.Thus,this review highlights the efficiency of hybrid sterilization technologies,providing an in-depth understanding of the practical application in the built environment.Also,it presents an outlook on the future direction of sterilization technology,including the development of new methods that are more efficient,energy-saving,and targeted to better address microbial contamination in the complex and changing built environment.Overall,this study provides a clear guide for selecting technologies to handle microbial contamination in different building environments in the future,as well as a scientific basis for developing more effective air quality control strategies.展开更多
It has been over a decade since the first coded aperture video compressive sensing(CS)system was reported.The underlying principle of this technology is to employ a high-frequency modulator in the optical path to modu...It has been over a decade since the first coded aperture video compressive sensing(CS)system was reported.The underlying principle of this technology is to employ a high-frequency modulator in the optical path to modulate a recorded high-speed scene within one integration time.The superimposed image captured in this manner is modulated and compressed,since multiple modulation patterns are imposed.Following this,reconstruction algorithms are utilized to recover the desired high-speed scene.One leading advantage of video CS is that a single captured measurement can be used to reconstruct a multi-frame video,thereby enabling a low-speed camera to capture high-speed scenes.Inspired by this,a number of variants of video CS systems have been built,mainly using different modulation devices.Meanwhile,in order to obtain high-quality reconstruction videos,many algorithms have been developed,from optimization-based iterative algorithms to deep-learning-based ones.Recently,emerging deep learning methods have been dominant due to their high-speed inference and high-quality reconstruction,highlighting the possibility of deploying video CS in practical applications.Toward this end,this paper reviews the progress that has been achieved in video CS during the past decade.We further analyze the efforts that need to be made—in terms of both hardware and algorithms—to enable real applications.Research gaps are put forward and future directions are summarized to help researchers and engineers working on this topic.展开更多
This paper systematically studies the current practical application status,existing problems and optimization suggestions of 3D printing technology in spacecraft manufacturing.Research shows that this technology has b...This paper systematically studies the current practical application status,existing problems and optimization suggestions of 3D printing technology in spacecraft manufacturing.Research shows that this technology has been successfully applied to the manufacturing of key components such as rocket engines and satellite structures,demonstrating advantages like lightweight and rapid prototyping.However,it still faces core challenges such as material performance,process stability,adaptability to space environments,and industrialization costs.In response to these issues,this paper proposes three optimization suggestions:enhancing manufacturing reliability by developing aerospace-specific materials,optimizing process parameters,and establishing a quality traceability system.Surface modification technology and topological optimization design are adopted to enhance the adaptability to the spatial environment,and a space-ground integrated verification method is constructed.Reduce industrialization costs through the localization of materials,modular production,and the construction of a standardized system.Research has confirmed that implementing these measures can reduce the performance dispersion of 3D-printed aerospace components by more than 50%,increase their in-orbit lifespan by three times,and lower production costs by 30-40%.The research results of this paper provide a systematic technical route and industrialization solution for the large-scale application of 3D printing technology in the aerospace field,which has significant reference value for promoting the innovation of aerospace manufacturing models.展开更多
Using the“Civil Aviation Oral English”course as a case study,we operationalize the ideological and political education(IPE)integrated evaluation system for oral English courses in higher vocational education,which i...Using the“Civil Aviation Oral English”course as a case study,we operationalize the ideological and political education(IPE)integrated evaluation system for oral English courses in higher vocational education,which is based on Kirkpatrick’s Model,into a tripartite teaching evaluation system.The system encompasses three components such as learning objective attainment,individual developmental progress,and value-added competency assessment.The proposed system facilitates three-dimensional,multi-level,and scientifically validated teaching evaluation.This approach aligns with the holistic development of students’knowledge structures,professional competencies,moral qualities,and emotional intelligence.The study provides novel methodological perspectives for IPE evaluation in vocational oral English instruction,particularly in:curriculum-based ideological mapping,competency growth metrics,and value internalization assessment.展开更多
At present, the application scope of MATIAB software has become wider and wider under the background of theory and practice. It has the advantages of convenience, flexibility and strong developability. It has graduall...At present, the application scope of MATIAB software has become wider and wider under the background of theory and practice. It has the advantages of convenience, flexibility and strong developability. It has gradually become one of the indispensable teaching tools in the process of higher vocational mathematics teaching. It pushes higher vocational mathematics teaching to a peak of development, and enables students' thinking ability, practical ability and core ability to get a better training process. The combination of theory and mathematics software can not only bring freshness to students, stimulate students' enthusiasm for learning, but also enable them to flexibly apply mathematics ideas to various fields.展开更多
With the continuous development and utilization of resources, the ecological environment has been destroyed more and more obviously, and natural disasters have also occurred. It is extremely important to improve the e...With the continuous development and utilization of resources, the ecological environment has been destroyed more and more obviously, and natural disasters have also occurred. It is extremely important to improve the environmental monitoring and protection mechanism. Environmental monitoring technology is to use scientific detection methods and means to accurately understand the pollution situation, provide a reliable basis for the prevention and control of pollution, and accurately predict the change of pollutants. In this paper, the application of environmental monitoring technology in environmental protection is studied in order to provide reference for relevant people.展开更多
With the rapid development of China's economy and the deepening of modernization, mechatronics technology plays an important role in the development of China's economic production in various fields. With the a...With the rapid development of China's economy and the deepening of modernization, mechatronics technology plays an important role in the development of China's economic production in various fields. With the arrival of the information age and the development of modern society, mechatronics technology is more widely used, its technical level is also in the process of application has been strongly improved. This paper will start from its application in textile machinery, aiming at the characteristics, field and direction of textile mechatronics technology application, and analyze the specific situation of its application, so as to provide some reference for the effectiveness of mechatronics technology application.展开更多
Mechatronics is a kind of mechanical and electronic engineering, which is used in construction machinery and equipment. It can not only reduce energy consumption, improve engineering production efficiency, but also op...Mechatronics is a kind of mechanical and electronic engineering, which is used in construction machinery and equipment. It can not only reduce energy consumption, improve engineering production efficiency, but also optimize the operation process of engineering machinery and equipment, strengthen the supervision of the operation process of engineering machinery and equipment, and reduce the incidence of technical risk. This paper expounds the application significance of mechatronics technology in engineering machinery and equipment, analyzes the new trend of the application of mechatronics technology in engineering machinery and equipment, and explores the application practice of mechatronics technology in engineering machinery and equipment, for reference.展开更多
Brittleness is an important parameter controlling the mechanical behavior and failure characteristics of rocks under loading and unloading conditions,such as fracability,cutability,drillability and rockburst proneness...Brittleness is an important parameter controlling the mechanical behavior and failure characteristics of rocks under loading and unloading conditions,such as fracability,cutability,drillability and rockburst proneness.As such,it is of high practical value to correctly evaluate rock brittleness.However,the definition and measurement method of rock brittleness have been very diverse and not yet been standardized.In this paper,the definitions of rock brittleness are firstly reviewed,and several representative definitions of rock brittleness are identified and briefly discussed.The development and role of rock brittleness in different fields of rock engineering are also studied.Eighty brittleness indices publicly available in rock mechanics literature are compiled,and the measurement method,applicability and limitations of some indices are discussed.The results show that(1)the large number of brittleness indices and brittleness definitions is attributed to the different foci on the rock behavior when it breaks;(2)indices developed in one field usually are not directly applicable to other fields;and(3)the term“brittleness”is sometimes misused,and many empirically-obtained brittleness indices,which lack theoretical basis,fail to truly reflect rock brittleness.On the basis of this review,three measurement methods are identified,i.e.(1)elastic deformation before fracture,(2)shape of post-peak stressestrain curves,and(3)methods based on fracture mechanics theory,which have the potential to be further refined and unified to become the standard measurement methods of rock brittleness.It is highly beneficial for the rock mechanics community to develop a robust definition of rock brittleness.This study will undoubtedly provide a comprehensive timely reference for selecting an appropriate brittleness index for their applications,and will also pave the way for the development of a standard definition and measurement method of rock brittleness in the long term.展开更多
文摘This paper comprehensively explores the technical principles and application practice of Sainaoning absorbable dural sealant medical adhesive in dural closure.It elaborates on the research and development background of Sainaoning,analyzes its composition,action mechanism,and product characteristics in detail,and presents the results of pre-clinical and clinical studies.The application of Sainaoning in different craniotomy surgeries is discussed,and its effectiveness and safety are evaluated.The paper also analyzes the challenges in its application and proposes corresponding countermeasures,aiming to provide a comprehensive understanding and reference for the clinical use and further development of Sainaoning.
文摘In the context of energy structure transformation,digital and intelligent technologies have been introduced into the field of hydropower,which has accelerated the technological and equipment innovation of hydropower plants.However,it has also brought severe challenges to the operation and maintenance of hydropower plants.Traditional hydropower plant operation and maintenance suffer from problems such as low efficiency,equipment aging,and high labor costs,which seriously hinder the innovation and upgrading of hydropower plant operation and maintenance.Therefore,this article focuses on the operation and maintenance of hydropower plants,summarizes a series of innovative strategies,and applies them in practice to effectively improve the operation and maintenance level of hydropower plants.
基金Supported by National Natural Science Foundation of China(Grant No.51575150)
文摘The theoretical research of cable-driven mechanisms is developed with its broad applications. The first prototype of cable-driven mechanisms is RoboCrane, which was developed by the National Institute of Standards and Technology （NIST）. Then many excellent properties were developed and they have a variety of applications such as aerospace, aircraft and automobile industries [1]. Example application for RoboCrane in the field of aircraft mainte- nance is equipped with a quick-change mechanism to remove the robot arm remotely.
基金2019 Guangxi Traditional Chinese Medicine University Curriculum Ideological and Political Teaching Reform Key Project(No.sz191027)2019 Guangxi Traditional Chinese Medicine University School-level Educational Reform and Research Project(No.:2019B048+2 种基金2019A030)The 2016 Guangxi Higher Education Undergraduate Teaching Reform Project(No.2016JGA233)National Key Research and Development Plan Funding(N0:2017YFC1703903)。
文摘The application of TBL teaching method to"Zhuang Medical Prescriptions"is an actual practice of group cooperative learning mode.Through this method,a more active learning atmosphere can be constructed,and it is also an activity to jointly achieve the teaching goals.From the perspective of the practice of basic teaching,it is a creative teaching strategy.Let students develop the awareness and habit of using team groups for cooperative inquisitive learning,so as to gradually improve students'level of comprehensive application analysis.This paper discusses in detail from the perspective of practical research and building,and compares data under different teaching methods with test results to prove that TBL teaching method is superior to traditional teaching method.
文摘 The "Application of Standards for Equipment-Manufacturing Industry Workshop" was held for two days in Shanghai from May 25th to May 26th, 2007. Dozens of delegates from famous enterprises and organizations around the world participated, including those from Shell China Ltd., Leal China, Siemens Ltd. China Corporate, and Assurance of SAI Global and SGS . Nine experts, engaged in standardization, intellectual property, and related fields, gave speeches on "Standards and Best Practices," and many illustrative examples of the application of standards were provided.……
文摘At present, the speed of social development is accelerating, and the pressure of competition among enterprises within the industry is increasing. If an enterprise wants to achieve long-term and stable development, it needs to do a good job in internal financial management. Enterprise management accounting should formulate target plans and relevant policies according to the actual situation of enterprise development, effectively carry out high-quality enterprise financial management, and comprehensively promote the development and progress of enterprises.
文摘Under the new curriculum reform, the traditional indoctrination teaching method has not adapted to the development of society, and it is difficult to meet the learning needs of students. Interactive teaching method has been introduced into junior high school English teaching, which has innovated classroom teaching methods, brought more opportunities for junior high school students to explore independently, and created a knowledgeable and open English classroom. Students have become the real masters of the classroom. The new English curriculum standard for junior middle schools puts forward that English teaching should be geared to all students, keep the language learning asymptotic and continuous, form innovative consciousness, develop scientific spirit and cultivate positive emotional attitudes and values. However, in the current junior high school English teaching practice, there are still some problems in interactive teaching, and English teachers need to take measures to improve them. Therefore, in daily teaching, junior high school English teachers should change the traditional teaching methods, create an open English classroom and enhance the interaction between teachers and students. On the one hand, they should cultivate junior high school students listening, speaking, reading and writing abilities;on the other hand, they should exercise their English thinking and accomplishment so that junior high school students can express and use English skillfully in real life.
文摘Surveying and mapping engineering technology in the process of real estate surveying, can provide corresponding support from the technical level, select the appropriate engineering technology, can also give full play to the advantages and role of surveying and mapping engineering, to ensure the efficiency and accuracy of surveying and mapping engineering technology for information data acquisition.
基金Wuhan University of Arts and Science 2023 University-Level Scientific Research(Project No.:2023xk33)。
文摘The application of digital technology in prosthodontics not only improves the accuracy of restoration and the efficiency of diagnosis and treatment,but also brings more comfortable and convenient diagnosis and treatment experience to patients.It effectively promotes the rapid development of the prosthodontic aesthetics industry and leads prosthodontic technology to gradually enter a new digital era.Combining the advantages of digital technology in prosthodontics,this paper focuses on the specific applications of digital impression technology,CAD/CAM technology,network-based integrated cloud service technology,and CBCT technology in prosthodontics.On this basis,it prospects the development trend of digital technology in the field of prosthodontics,aiming to provide solid theoretical and practical support for clinical practice of prosthodontics and promote the gradual integration of the prosthodontic industry with the digital era.
基金financially supported by the National Natural Science Foundation of China(Nos.22306026 and 52371346)the Young Elite Scientists Sponsorship Program by China Association for Science and Technology(No.2023QNRC001)+3 种基金the Ecological Society of China(No.STQT2023C07)the Fundamental Research Funds for the Central Universities(Nos.2242024K40007 and 2242024RCB0058)the Start-up Research Fund of Southeast University(No.RF1028623141)Tang Scholar Program of Southeast University
文摘Transition metals have garnered significant attention for their roles in addressing energy shortages and environmental water pollution.Their multivalent states and unique electron transfer properties facilitate charge transfer in the conversion reaction,expedite energy conversion,and achieve low-energy water treatment.This review comprehensively explores the fundamental mechanisms and practical applications of transition metals in water treatment,including adsorption,photocatalysis,electrocatalysis,photoelectrocatalysis,and other technologies.The feasibility of water treatment using transition metal-based materials is demonstrated through theoretical studies on typical transition metals employed in these water treatment technologies while emphasizing the potential for optimizing material performance through strategies like structural design,defect engineering,crystal engineering,composite materials,surface modification,and atomic catalysts.In addition,the utilization of transition metal-based materials in practical wastewater treatment is comprehensively reviewed.Finally,the challenges and perspectives of transition metal-based materials in practical wastewater treatment are outlined,providing a theoretical foundation and guidance for future research and engineering advancements.
文摘As globalization accelerates,microbial contamination in the built environment poses a major public health challenge.Especially since Corona Virus Disease 2019(COVID-19),microbial sterilization technology has become a crucial research area for indoor air pollution control in order to create a hygienic and safe built environment.Based on this,the study reviews sterilization technologies in the built environment,focusing on the principles,efficiency and applicability,revealing advantages and limitations,and summarizing current research advances.Despite the efficacy of single sterilization technologies in specific environments,the corresponding side effects still exist.Thus,this review highlights the efficiency of hybrid sterilization technologies,providing an in-depth understanding of the practical application in the built environment.Also,it presents an outlook on the future direction of sterilization technology,including the development of new methods that are more efficient,energy-saving,and targeted to better address microbial contamination in the complex and changing built environment.Overall,this study provides a clear guide for selecting technologies to handle microbial contamination in different building environments in the future,as well as a scientific basis for developing more effective air quality control strategies.
基金supported by the National Natural Science Foundation of China(61931012,62171258,62088102,and 62271414)the Zhejiang Provincial Outstanding Youth Science Foundation(LR23F010001)the Key Project of Westlake Institute for Optoelectronics(2023GD007).
文摘It has been over a decade since the first coded aperture video compressive sensing(CS)system was reported.The underlying principle of this technology is to employ a high-frequency modulator in the optical path to modulate a recorded high-speed scene within one integration time.The superimposed image captured in this manner is modulated and compressed,since multiple modulation patterns are imposed.Following this,reconstruction algorithms are utilized to recover the desired high-speed scene.One leading advantage of video CS is that a single captured measurement can be used to reconstruct a multi-frame video,thereby enabling a low-speed camera to capture high-speed scenes.Inspired by this,a number of variants of video CS systems have been built,mainly using different modulation devices.Meanwhile,in order to obtain high-quality reconstruction videos,many algorithms have been developed,from optimization-based iterative algorithms to deep-learning-based ones.Recently,emerging deep learning methods have been dominant due to their high-speed inference and high-quality reconstruction,highlighting the possibility of deploying video CS in practical applications.Toward this end,this paper reviews the progress that has been achieved in video CS during the past decade.We further analyze the efforts that need to be made—in terms of both hardware and algorithms—to enable real applications.Research gaps are put forward and future directions are summarized to help researchers and engineers working on this topic.
文摘This paper systematically studies the current practical application status,existing problems and optimization suggestions of 3D printing technology in spacecraft manufacturing.Research shows that this technology has been successfully applied to the manufacturing of key components such as rocket engines and satellite structures,demonstrating advantages like lightweight and rapid prototyping.However,it still faces core challenges such as material performance,process stability,adaptability to space environments,and industrialization costs.In response to these issues,this paper proposes three optimization suggestions:enhancing manufacturing reliability by developing aerospace-specific materials,optimizing process parameters,and establishing a quality traceability system.Surface modification technology and topological optimization design are adopted to enhance the adaptability to the spatial environment,and a space-ground integrated verification method is constructed.Reduce industrialization costs through the localization of materials,modular production,and the construction of a standardized system.Research has confirmed that implementing these measures can reduce the performance dispersion of 3D-printed aerospace components by more than 50%,increase their in-orbit lifespan by three times,and lower production costs by 30-40%.The research results of this paper provide a systematic technical route and industrialization solution for the large-scale application of 3D printing technology in the aerospace field,which has significant reference value for promoting the innovation of aerospace manufacturing models.
基金supported by grants from“2023 Research on Vocational English Curriculum Reform:‘Implementation Path of Ideological and Political Education in Vocational English Courses for Higher Vocational Education Under the New Curriculum Standards’(Grant No.WYJZW-2023GD0029)”“The Special Project of 2024 on‘Reading and Teacher Development’Under the 14th Five-Year Plan of the China Tao Xingzhi Research Association(Grant No.CTXZRA202411937GD)”.
文摘Using the“Civil Aviation Oral English”course as a case study,we operationalize the ideological and political education(IPE)integrated evaluation system for oral English courses in higher vocational education,which is based on Kirkpatrick’s Model,into a tripartite teaching evaluation system.The system encompasses three components such as learning objective attainment,individual developmental progress,and value-added competency assessment.The proposed system facilitates three-dimensional,multi-level,and scientifically validated teaching evaluation.This approach aligns with the holistic development of students’knowledge structures,professional competencies,moral qualities,and emotional intelligence.The study provides novel methodological perspectives for IPE evaluation in vocational oral English instruction,particularly in:curriculum-based ideological mapping,competency growth metrics,and value internalization assessment.
文摘At present, the application scope of MATIAB software has become wider and wider under the background of theory and practice. It has the advantages of convenience, flexibility and strong developability. It has gradually become one of the indispensable teaching tools in the process of higher vocational mathematics teaching. It pushes higher vocational mathematics teaching to a peak of development, and enables students' thinking ability, practical ability and core ability to get a better training process. The combination of theory and mathematics software can not only bring freshness to students, stimulate students' enthusiasm for learning, but also enable them to flexibly apply mathematics ideas to various fields.
文摘With the continuous development and utilization of resources, the ecological environment has been destroyed more and more obviously, and natural disasters have also occurred. It is extremely important to improve the environmental monitoring and protection mechanism. Environmental monitoring technology is to use scientific detection methods and means to accurately understand the pollution situation, provide a reliable basis for the prevention and control of pollution, and accurately predict the change of pollutants. In this paper, the application of environmental monitoring technology in environmental protection is studied in order to provide reference for relevant people.
文摘With the rapid development of China's economy and the deepening of modernization, mechatronics technology plays an important role in the development of China's economic production in various fields. With the arrival of the information age and the development of modern society, mechatronics technology is more widely used, its technical level is also in the process of application has been strongly improved. This paper will start from its application in textile machinery, aiming at the characteristics, field and direction of textile mechatronics technology application, and analyze the specific situation of its application, so as to provide some reference for the effectiveness of mechatronics technology application.
文摘Mechatronics is a kind of mechanical and electronic engineering, which is used in construction machinery and equipment. It can not only reduce energy consumption, improve engineering production efficiency, but also optimize the operation process of engineering machinery and equipment, strengthen the supervision of the operation process of engineering machinery and equipment, and reduce the incidence of technical risk. This paper expounds the application significance of mechatronics technology in engineering machinery and equipment, analyzes the new trend of the application of mechatronics technology in engineering machinery and equipment, and explores the application practice of mechatronics technology in engineering machinery and equipment, for reference.
基金We gratefully acknowledge financial support from the National Natural Science Foundation of China(Grant Nos.51879135 and 41877217)The work in this paper was also supported by the Hong Kong Scholars Program(Grant No.XJ2017043).
文摘Brittleness is an important parameter controlling the mechanical behavior and failure characteristics of rocks under loading and unloading conditions,such as fracability,cutability,drillability and rockburst proneness.As such,it is of high practical value to correctly evaluate rock brittleness.However,the definition and measurement method of rock brittleness have been very diverse and not yet been standardized.In this paper,the definitions of rock brittleness are firstly reviewed,and several representative definitions of rock brittleness are identified and briefly discussed.The development and role of rock brittleness in different fields of rock engineering are also studied.Eighty brittleness indices publicly available in rock mechanics literature are compiled,and the measurement method,applicability and limitations of some indices are discussed.The results show that(1)the large number of brittleness indices and brittleness definitions is attributed to the different foci on the rock behavior when it breaks;(2)indices developed in one field usually are not directly applicable to other fields;and(3)the term“brittleness”is sometimes misused,and many empirically-obtained brittleness indices,which lack theoretical basis,fail to truly reflect rock brittleness.On the basis of this review,three measurement methods are identified,i.e.(1)elastic deformation before fracture,(2)shape of post-peak stressestrain curves,and(3)methods based on fracture mechanics theory,which have the potential to be further refined and unified to become the standard measurement methods of rock brittleness.It is highly beneficial for the rock mechanics community to develop a robust definition of rock brittleness.This study will undoubtedly provide a comprehensive timely reference for selecting an appropriate brittleness index for their applications,and will also pave the way for the development of a standard definition and measurement method of rock brittleness in the long term.
