Based on the reality of college English teaching, this paper puts forward the concept of three-dimensional teaching in college English. Combined with the application of modern technology, this paper discusses the syst...Based on the reality of college English teaching, this paper puts forward the concept of three-dimensional teaching in college English. Combined with the application of modern technology, this paper discusses the system of college English teaching curriculum, the modernization of teaching content, and the modernization of teaching methods under the network environment. The teaching methods are diversified, and the content of college English teaching reform is discussed in detail. The combination of the leading role of teachers and the main role of students is proposed.展开更多
Based on the teaching practice of mineral resources economics,this article believes that a certain economic foundation is an indispensable condition for learning mineral resource economics well for the students of geo...Based on the teaching practice of mineral resources economics,this article believes that a certain economic foundation is an indispensable condition for learning mineral resource economics well for the students of geology majors,and the teaching content of mineral resources economics must include the basic knowledge of economics;Mining resource management is an indispensable content for constructing a knowledge system of economic analysis and evaluation of mineral resources.The teaching content of mineral resource economics should include the sustainable use of mineral resources and the environmental protection.In order to meet the needs of society,the teaching content of mineral resources economics must be updated in time.展开更多
Language is the carrier of culture as well as the main forms of culture.Language can not be separated from culture while culture depends on language.English teaching is the language teaching.It,of course,includes cult...Language is the carrier of culture as well as the main forms of culture.Language can not be separated from culture while culture depends on language.English teaching is the language teaching.It,of course,includes cultural teaching.In recent twenty years,Chinese scholars have made a lot studies about cultural teaching,which mainly involves in the content of cultural teaching and the methods of culture teaching.This paper centres on these two subjects,collects all articles about them written by Chinese researcher from important English journals as well as monographs,and makes a review of them so as to get a clear picture about the focus as well as the shortcomings of these studies.This provides a backcloth for future researchers.展开更多
Uniaxial compression tests and cyclic loading acoustic emission tests were conducted on 20%,40%,60%,80%,dry and saturated muddy sandstone by using a creep impact loading system to investigate the mechanical properties...Uniaxial compression tests and cyclic loading acoustic emission tests were conducted on 20%,40%,60%,80%,dry and saturated muddy sandstone by using a creep impact loading system to investigate the mechanical properties and acoustic emission characteristics of soft rocks with different water contents under dynamic disturbance.The mechanical properties and acoustic emission characteristics of muddy sandstones at different water contents were analysed.Results of experimental studies show that water is a key factor in the mechanical properties of rocks,softening them,increasing their porosity,reducing their brittleness and increasing their plasticity.Under uniaxial compression,the macroscopic damage characteristics of the muddy sandstone change from mono-bevel shear damage and‘X’type conjugate bevel shear damage to a roadway bottom-drum type damage as the water content increases.Dynamic perturbation has a strengthening effect on the mechanical properties of samples with 60%and less water content,and a weakening effect on samples with 80%and more water content,but the weakening effect is not obvious.Macroscopic damage characteristics of dry samples remain unchanged,water samples from shear damage and tensile–shear composite damage gradually transformed into cleavage damage,until saturation transformation monoclinic shear damage.The evolution of acoustic emission energy and event number is mainly divided into four stages:loading stage(Ⅰ),dynamic loading stage(Ⅱ),yield failure stage(Ⅲ),and post-peak stage(Ⅳ),the acoustic emission characteristics of the stages were different for different water contents.The characteristic value of acoustic emission key point frequency gradually decreases,and the damage degree of the specimen increases,corresponding to low water content—high main frequency—low damage and high water content—low main frequency—high damage.展开更多
In the 1970s, the EFL profession generally began abandoning grammar-based methodologies in favor of approacheswhich focused on communication as the goal of language learning. Affected by this trend, the process approa...In the 1970s, the EFL profession generally began abandoning grammar-based methodologies in favor of approacheswhich focused on communication as the goal of language learning. Affected by this trend, the process approach to writing (asopposed to writing as a product) was introduced. Yet EFL. teachers themselves are faced with some obstacles when applying thetheory. This article analyzes some factors that hinder students from focusing on content when writing, and suggests in conclusionthat teachers should not be too impatient; rather, they should take students’ level into consideration and allow students to have atransitional stage to get themselves prepared.展开更多
How to cultivate and improve graduate students’innovation and practical abilities in software engineering through the curriculum and teaching mode reform is an important issue.In this paper,a research literacy-driven...How to cultivate and improve graduate students’innovation and practical abilities in software engineering through the curriculum and teaching mode reform is an important issue.In this paper,a research literacy-driven teaching mode is proposed.It assists in the reform of the curriculum system.Then,a curriculum system construction framework is proposed,which involves the integration of research literacy into classroom teaching content.It assists in the cultivation of research abilities of graduate students in software engineering.The effectiveness of the curriculum reform is demonstrated through questionnaire surveys and research outcomes of the project team.The results show that the methods explored in this paper can serve as valuable references for future course design and teaching practice in computer-related courses for graduates.展开更多
Based on the empirical investigation of presentation in college English classes for junior non-English majors in science and engineering universities,the author explains her own thinking on how to improve presentation...Based on the empirical investigation of presentation in college English classes for junior non-English majors in science and engineering universities,the author explains her own thinking on how to improve presentation teaching from four aspects:setting teaching objectives,selecting teaching contents,using teaching methods,and evaluating and implementing methods.展开更多
Traditional English teaching in higher vocational colleges has some problems in the cultivation of students,which cannot meet the needs of social development.With the development of the Internet age,the traditional wa...Traditional English teaching in higher vocational colleges has some problems in the cultivation of students,which cannot meet the needs of social development.With the development of the Internet age,the traditional way is challenged,while there are also great opportunities.Therefore,for the English teaching of higher vocational colleges,we should seize the opportunity of the times,change the teaching content and teaching methods,follow the development trend of the times,meet the challenges,enhance the teaching level,promote the modern development of teaching,and cultivate high-quality talents for social needs.Based on this,this paper first briefly analyzes the problems existing in the current English teaching in higher vocational colleges,challenges the English teaching in Higher Vocational Colleges under the background of“Internet+”,then analyzes the transformation of English teaching content in Higher Vocational Colleges under the background of“Internet+”,and finally analyzes the transformation of English teaching methods in Higher Vocational Colleges under the background of“Internet+”,hope to provide some helpful reference and opportunities of exchanges for scholars and related people of the industry.展开更多
On account of the difficulties appeared in the higher vocational students'English reading comprehension,the author connected these difficulties with four schemas included in the schema theory,and according to cont...On account of the difficulties appeared in the higher vocational students'English reading comprehension,the author connected these difficulties with four schemas included in the schema theory,and according to content schema,made an experimental study on reading test.Through data contrast and analysis of two groups'reading test results,the author concluded the content schema had certain significance for the higher vocational English reading teaching practice.展开更多
Premier Li Keqiang put forward the "Internet +" action plan, with the "Internet + education" and "big data + education" era, based on the Internet and BYOD (Bring Your Own Device) mobile ...Premier Li Keqiang put forward the "Internet +" action plan, with the "Internet + education" and "big data + education" era, based on the Internet and BYOD (Bring Your Own Device) mobile cloud teaching methods to become modern classroom teaching reform Trends and trends. Ningxia Institute of Technology was identified as the first batch of local undergraduate colleges transition pilot schools, e-commerce professional as the autonomous region to focus on cultivating construction projects, how to expand teaching time and space, enhance teaching attraction, stimulate students to learn enthusiasm and autonomy, expand quality education Resources benefit side, become the urgent problem to be solved. This paper studies the content, methods and methods of e-commerce under the background of "Internet +", so as to be able to reform the problems existing in the teaching of e-commerce in colleges and universities and improve the teaching quality of e-commerce.展开更多
To cultivate English majors' culture awareness and improve their English integrated competence, this paper clarifies the reasons and the choice of the content for the teaching of Language and Culture. The results of ...To cultivate English majors' culture awareness and improve their English integrated competence, this paper clarifies the reasons and the choice of the content for the teaching of Language and Culture. The results of the teaching and the investigation conducted by the author show that the choice of the teaching materials and the topics for the class must be included in the teaching plan. Besides, this paper also probed into the most difficult topic, the easiest topic, the topics that need to be explained more and the topics that need to be explained less in class; and the similarity and differences of the teaching contents for students in different grades are also analyzed. In the end, proper sources of the comparison of English and Chinese languages and cultures are revealed in order to enlarge students' knowledge and improve their competence in using English.展开更多
Content schema plays significant role in English reading comprehension.This essay aims to expatiate on some classroom activities to provide students with ways to activate their prior content schema and construct their...Content schema plays significant role in English reading comprehension.This essay aims to expatiate on some classroom activities to provide students with ways to activate their prior content schema and construct their new content schema to facilitate reading comprehension.展开更多
Laser-induced breakdown spectroscopy(LIBS)has become a widely used atomic spectroscopic technique for rapid coal analysis.However,the vast amount of spectral information in LIBS contains signal uncertainty,which can a...Laser-induced breakdown spectroscopy(LIBS)has become a widely used atomic spectroscopic technique for rapid coal analysis.However,the vast amount of spectral information in LIBS contains signal uncertainty,which can affect its quantification performance.In this work,we propose a hybrid variable selection method to improve the performance of LIBS quantification.Important variables are first identified using Pearson's correlation coefficient,mutual information,least absolute shrinkage and selection operator(LASSO)and random forest,and then filtered and combined with empirical variables related to fingerprint elements of coal ash content.Subsequently,these variables are fed into a partial least squares regression(PLSR).Additionally,in some models,certain variables unrelated to ash content are removed manually to study the impact of variable deselection on model performance.The proposed hybrid strategy was tested on three LIBS datasets for quantitative analysis of coal ash content and compared with the corresponding data-driven baseline method.It is significantly better than the variable selection only method based on empirical knowledge and in most cases outperforms the baseline method.The results showed that on all three datasets the hybrid strategy for variable selection combining empirical knowledge and data-driven algorithms achieved the lowest root mean square error of prediction(RMSEP)values of 1.605,3.478 and 1.647,respectively,which were significantly lower than those obtained from multiple linear regression using only 12 empirical variables,which are 1.959,3.718 and 2.181,respectively.The LASSO-PLSR model with empirical support and 20 selected variables exhibited a significantly improved performance after variable deselection,with RMSEP values dropping from 1.635,3.962 and 1.647 to 1.483,3.086 and 1.567,respectively.Such results demonstrate that using empirical knowledge as a support for datadriven variable selection can be a viable approach to improve the accuracy and reliability of LIBS quantification.展开更多
A summary of the exploration of the teaching mode of the general practice teaching clinic, a summary of the deficiencies of the teaching clinic and a summary of the significance of the establishment of the general pra...A summary of the exploration of the teaching mode of the general practice teaching clinic, a summary of the deficiencies of the teaching clinic and a summary of the significance of the establishment of the general practice teaching clinic are presented with a view to promoting the development of general practice and cultivating more excellent successors in general practice.展开更多
The migration of healthcare professionals,including nurses,is a global phenomenon.It is driven by various factors,including the pursuit of better opportunities,living conditions,and professional development,as well as...The migration of healthcare professionals,including nurses,is a global phenomenon.It is driven by various factors,including the pursuit of better opportunities,living conditions,and professional development,as well as political instability or conflict in their home countries.The World Health Organization(WHO)has noted that high-income countries often rely on foreign-trained nurses to fill gaps in their healthcare systems[1].For instance,as of 2021,over 40%(52 million)of all nurses in the United States(US)were expatriates[2].In the United Kingdom(UK),the percentage of expatriate nurses was even higher,reaching approximately 18%in 2021[3].Owing to globalization and migration,healthcare providers must possess cultural competence to deliver improved care[4,5].Culturally responsive teaching(CRT)is rooted in the idea that culture plays a vital role in shaping people’s behaviors,beliefs,values,and communication styles[6].Furthermore,these cultural factors influence patients’perspectives on health,illness,healing,and their preferences for care and communication[7].By recognizing and embracing these cultural differences,nurses can provide more effective and compassionate care to their diverse patient population[8].展开更多
The rapid development of 5G/6G and AI enables an environment of Internet of Everything(IoE)which can support millions of connected mobile devices and applications to operate smoothly at high speed and low delay.Howeve...The rapid development of 5G/6G and AI enables an environment of Internet of Everything(IoE)which can support millions of connected mobile devices and applications to operate smoothly at high speed and low delay.However,these massive devices will lead to explosive traffic growth,which in turn cause great burden for the data transmission and content delivery.This challenge can be eased by sinking some critical content from cloud to edge.In this case,how to determine the critical content,where to sink and how to access the content correctly and efficiently become new challenges.This work focuses on establishing a highly efficient content delivery framework in the IoE environment.In particular,the IoE environment is re-constructed as an end-edge-cloud collaborative system,in which the concept of digital twin is applied to promote the collaboration.Based on the digital asset obtained by digital twin from end users,a content popularity prediction scheme is firstly proposed to decide the critical content by using the Temporal Pattern Attention(TPA)enabled Long Short-Term Memory(LSTM)model.Then,the prediction results are input for the proposed caching scheme to decide where to sink the critical content by using the Reinforce Learning(RL)technology.Finally,a collaborative routing scheme is proposed to determine the way to access the content with the objective of minimizing overhead.The experimental results indicate that the proposed schemes outperform the state-of-the-art benchmarks in terms of the caching hit rate,the average throughput,the successful content delivery rate and the average routing overhead.展开更多
Synthetic biology is a new frontier of life science,which aims to design,transform and even synthesize organisms with engineering design concept.Doing a good job in the teaching of"synthetic biology"is of gr...Synthetic biology is a new frontier of life science,which aims to design,transform and even synthesize organisms with engineering design concept.Doing a good job in the teaching of"synthetic biology"is of great significance to the cultivation and reserve of biotechnology professionals in China,and also has an important impact on students' employment competitiveness.Under the background of"new engineering",the course reform of"synthetic biology"was carried out in terms of the construction of teaching staff,teaching methods,students' participation and the innovation of course content,and specific reform suggestions were put forward,hoping to effectively promote the sustainable development of"synthetic biology"and effectively improve the quality of education.展开更多
This study aimed to examine the surface and content validity of the Mentoring Function Scale for Novice Nurses, used to assess the mentoring of entry-level nurses, and to refine the scale items. In Study 1, six nurse ...This study aimed to examine the surface and content validity of the Mentoring Function Scale for Novice Nurses, used to assess the mentoring of entry-level nurses, and to refine the scale items. In Study 1, six nurse education researchers, selected using convenience sampling, with five or more years of nursing experience and experience teaching novice nurses, were invited to an expert meeting in July 2015. A group interview was conducted that lasted approximately 120 minutes. Study 2 examined the content validity index. Between September and November 2015, we distributed a self-administered questionnaire survey to 11 participants selected by convenience sampling. The participants included five nurse education researchers with a minimum of five years of nursing experience and experience teaching novice nurses, as well as six clinical nurses with a master’s degree or higher. Finally, 81 questionnaire items were retained from the initial 125 items. The 81-item Mentoring Function Scale for Novice Nurses had higher content validity than the original scale. To further increase the scale’s applicability, future studies should assess its reliability, construct validity, and criterion-related validity.展开更多
BACKGROUND With the continuous development and progress of medical technology,the position of surgical nursing in the field of clinical medicine is becoming in-creasingly prominent.As an important branch of the surgic...BACKGROUND With the continuous development and progress of medical technology,the position of surgical nursing in the field of clinical medicine is becoming in-creasingly prominent.As an important branch of the surgical field,the nursing requirements and difficulty of gastrointestinal surgery are also increasing.In order to improve the teaching quality of nursing care in gastrointestinal surgery,many educators and researchers are actively exploring new teaching methods.Among them,the teaching method case-based learning(CBL),scene-simulated learning(SSL),task-based learning(TBL),combining self-evaluation and training mode is considered as an effective method.This method aims to help students to better master knowledge and skills and improve their comprehensive quality by cultivating their self-evaluation ability.AIM To explore the practical effect of CBL-SSL-TBL combined with training mode and student self-assessment in nursing teaching of gastrointestinal surgery.METHODS Seventy-one nursing interns in our hospital from December 2020 to December 2021 were selected.According to different teaching modes,they were divided into observation group CBL-SSL-TBL combined with training mode combined with student self-assessment and control group(conventional teaching mode),of which 36 were in observation group and 35 were in control group.The results of operational skills,theoretical knowledge,nursing students'satisfaction,learning effectiveness questionnaire and teaching effect were compared between the two groups.RESULTS Compared between the two groups,the operational skills and theoretical knowledge scores of the observation group were higher than those of the control group,and the difference was statistically significant(P<0.05).Compared between the two groups,the total satisfaction ratio of the observation group was higher than that of the control group,the difference was statistically significant(P<0.05).Compared between the two groups,the observation group was lower than the control group in the questionnaire results of learning efficacy,and the difference was statistically significant(P<0.05).Compared between the two groups,the proportion of thinking ability,subjective initiative and understanding of theoretical knowledge in the observation group was higher than that in the control group,the difference was statistically significant(P<0.05).CONCLUSION The use of CBL-SSL-TBL combined with training mode and student self-assessment in gastrointestinal surgery nursing teaching can improve the operational skills of nursing interns,theoretical knowledge and satisfaction scores of nursing students,improve the results of learning efficiency questionnaire and teaching effect,which can be popularized in clinical teaching.展开更多
文摘Based on the reality of college English teaching, this paper puts forward the concept of three-dimensional teaching in college English. Combined with the application of modern technology, this paper discusses the system of college English teaching curriculum, the modernization of teaching content, and the modernization of teaching methods under the network environment. The teaching methods are diversified, and the content of college English teaching reform is discussed in detail. The combination of the leading role of teachers and the main role of students is proposed.
文摘Based on the teaching practice of mineral resources economics,this article believes that a certain economic foundation is an indispensable condition for learning mineral resource economics well for the students of geology majors,and the teaching content of mineral resources economics must include the basic knowledge of economics;Mining resource management is an indispensable content for constructing a knowledge system of economic analysis and evaluation of mineral resources.The teaching content of mineral resource economics should include the sustainable use of mineral resources and the environmental protection.In order to meet the needs of society,the teaching content of mineral resources economics must be updated in time.
文摘Language is the carrier of culture as well as the main forms of culture.Language can not be separated from culture while culture depends on language.English teaching is the language teaching.It,of course,includes cultural teaching.In recent twenty years,Chinese scholars have made a lot studies about cultural teaching,which mainly involves in the content of cultural teaching and the methods of culture teaching.This paper centres on these two subjects,collects all articles about them written by Chinese researcher from important English journals as well as monographs,and makes a review of them so as to get a clear picture about the focus as well as the shortcomings of these studies.This provides a backcloth for future researchers.
基金National Natural Science Foundation of China (No. 52204101)Natural Science Foundation of Shandong Province (No. ZR2022QE137)Open Project of State Key Laboratory for Geomechanics and Deep Underground Engineering in CUMTB (No. SKLGDUEK2023).
文摘Uniaxial compression tests and cyclic loading acoustic emission tests were conducted on 20%,40%,60%,80%,dry and saturated muddy sandstone by using a creep impact loading system to investigate the mechanical properties and acoustic emission characteristics of soft rocks with different water contents under dynamic disturbance.The mechanical properties and acoustic emission characteristics of muddy sandstones at different water contents were analysed.Results of experimental studies show that water is a key factor in the mechanical properties of rocks,softening them,increasing their porosity,reducing their brittleness and increasing their plasticity.Under uniaxial compression,the macroscopic damage characteristics of the muddy sandstone change from mono-bevel shear damage and‘X’type conjugate bevel shear damage to a roadway bottom-drum type damage as the water content increases.Dynamic perturbation has a strengthening effect on the mechanical properties of samples with 60%and less water content,and a weakening effect on samples with 80%and more water content,but the weakening effect is not obvious.Macroscopic damage characteristics of dry samples remain unchanged,water samples from shear damage and tensile–shear composite damage gradually transformed into cleavage damage,until saturation transformation monoclinic shear damage.The evolution of acoustic emission energy and event number is mainly divided into four stages:loading stage(Ⅰ),dynamic loading stage(Ⅱ),yield failure stage(Ⅲ),and post-peak stage(Ⅳ),the acoustic emission characteristics of the stages were different for different water contents.The characteristic value of acoustic emission key point frequency gradually decreases,and the damage degree of the specimen increases,corresponding to low water content—high main frequency—low damage and high water content—low main frequency—high damage.
文摘In the 1970s, the EFL profession generally began abandoning grammar-based methodologies in favor of approacheswhich focused on communication as the goal of language learning. Affected by this trend, the process approach to writing (asopposed to writing as a product) was introduced. Yet EFL. teachers themselves are faced with some obstacles when applying thetheory. This article analyzes some factors that hinder students from focusing on content when writing, and suggests in conclusionthat teachers should not be too impatient; rather, they should take students’ level into consideration and allow students to have atransitional stage to get themselves prepared.
基金supported by the National Natural Science Foundation of China(62102291)the Ministry ofEducation’s Industry School Cooperation Collaborative Education Project(220606008213849)the Opening Foundation of Engineering Research Center of Hubei Province for Clothing Information(N2022HBCI02)。
文摘How to cultivate and improve graduate students’innovation and practical abilities in software engineering through the curriculum and teaching mode reform is an important issue.In this paper,a research literacy-driven teaching mode is proposed.It assists in the reform of the curriculum system.Then,a curriculum system construction framework is proposed,which involves the integration of research literacy into classroom teaching content.It assists in the cultivation of research abilities of graduate students in software engineering.The effectiveness of the curriculum reform is demonstrated through questionnaire surveys and research outcomes of the project team.The results show that the methods explored in this paper can serve as valuable references for future course design and teaching practice in computer-related courses for graduates.
文摘Based on the empirical investigation of presentation in college English classes for junior non-English majors in science and engineering universities,the author explains her own thinking on how to improve presentation teaching from four aspects:setting teaching objectives,selecting teaching contents,using teaching methods,and evaluating and implementing methods.
文摘Traditional English teaching in higher vocational colleges has some problems in the cultivation of students,which cannot meet the needs of social development.With the development of the Internet age,the traditional way is challenged,while there are also great opportunities.Therefore,for the English teaching of higher vocational colleges,we should seize the opportunity of the times,change the teaching content and teaching methods,follow the development trend of the times,meet the challenges,enhance the teaching level,promote the modern development of teaching,and cultivate high-quality talents for social needs.Based on this,this paper first briefly analyzes the problems existing in the current English teaching in higher vocational colleges,challenges the English teaching in Higher Vocational Colleges under the background of“Internet+”,then analyzes the transformation of English teaching content in Higher Vocational Colleges under the background of“Internet+”,and finally analyzes the transformation of English teaching methods in Higher Vocational Colleges under the background of“Internet+”,hope to provide some helpful reference and opportunities of exchanges for scholars and related people of the industry.
文摘On account of the difficulties appeared in the higher vocational students'English reading comprehension,the author connected these difficulties with four schemas included in the schema theory,and according to content schema,made an experimental study on reading test.Through data contrast and analysis of two groups'reading test results,the author concluded the content schema had certain significance for the higher vocational English reading teaching practice.
文摘Premier Li Keqiang put forward the "Internet +" action plan, with the "Internet + education" and "big data + education" era, based on the Internet and BYOD (Bring Your Own Device) mobile cloud teaching methods to become modern classroom teaching reform Trends and trends. Ningxia Institute of Technology was identified as the first batch of local undergraduate colleges transition pilot schools, e-commerce professional as the autonomous region to focus on cultivating construction projects, how to expand teaching time and space, enhance teaching attraction, stimulate students to learn enthusiasm and autonomy, expand quality education Resources benefit side, become the urgent problem to be solved. This paper studies the content, methods and methods of e-commerce under the background of "Internet +", so as to be able to reform the problems existing in the teaching of e-commerce in colleges and universities and improve the teaching quality of e-commerce.
文摘To cultivate English majors' culture awareness and improve their English integrated competence, this paper clarifies the reasons and the choice of the content for the teaching of Language and Culture. The results of the teaching and the investigation conducted by the author show that the choice of the teaching materials and the topics for the class must be included in the teaching plan. Besides, this paper also probed into the most difficult topic, the easiest topic, the topics that need to be explained more and the topics that need to be explained less in class; and the similarity and differences of the teaching contents for students in different grades are also analyzed. In the end, proper sources of the comparison of English and Chinese languages and cultures are revealed in order to enlarge students' knowledge and improve their competence in using English.
文摘Content schema plays significant role in English reading comprehension.This essay aims to expatiate on some classroom activities to provide students with ways to activate their prior content schema and construct their new content schema to facilitate reading comprehension.
基金financial supports from National Natural Science Foundation of China(No.62205172)Huaneng Group Science and Technology Research Project(No.HNKJ22-H105)Tsinghua University Initiative Scientific Research Program and the International Joint Mission on Climate Change and Carbon Neutrality。
文摘Laser-induced breakdown spectroscopy(LIBS)has become a widely used atomic spectroscopic technique for rapid coal analysis.However,the vast amount of spectral information in LIBS contains signal uncertainty,which can affect its quantification performance.In this work,we propose a hybrid variable selection method to improve the performance of LIBS quantification.Important variables are first identified using Pearson's correlation coefficient,mutual information,least absolute shrinkage and selection operator(LASSO)and random forest,and then filtered and combined with empirical variables related to fingerprint elements of coal ash content.Subsequently,these variables are fed into a partial least squares regression(PLSR).Additionally,in some models,certain variables unrelated to ash content are removed manually to study the impact of variable deselection on model performance.The proposed hybrid strategy was tested on three LIBS datasets for quantitative analysis of coal ash content and compared with the corresponding data-driven baseline method.It is significantly better than the variable selection only method based on empirical knowledge and in most cases outperforms the baseline method.The results showed that on all three datasets the hybrid strategy for variable selection combining empirical knowledge and data-driven algorithms achieved the lowest root mean square error of prediction(RMSEP)values of 1.605,3.478 and 1.647,respectively,which were significantly lower than those obtained from multiple linear regression using only 12 empirical variables,which are 1.959,3.718 and 2.181,respectively.The LASSO-PLSR model with empirical support and 20 selected variables exhibited a significantly improved performance after variable deselection,with RMSEP values dropping from 1.635,3.962 and 1.647 to 1.483,3.086 and 1.567,respectively.Such results demonstrate that using empirical knowledge as a support for datadriven variable selection can be a viable approach to improve the accuracy and reliability of LIBS quantification.
文摘A summary of the exploration of the teaching mode of the general practice teaching clinic, a summary of the deficiencies of the teaching clinic and a summary of the significance of the establishment of the general practice teaching clinic are presented with a view to promoting the development of general practice and cultivating more excellent successors in general practice.
文摘The migration of healthcare professionals,including nurses,is a global phenomenon.It is driven by various factors,including the pursuit of better opportunities,living conditions,and professional development,as well as political instability or conflict in their home countries.The World Health Organization(WHO)has noted that high-income countries often rely on foreign-trained nurses to fill gaps in their healthcare systems[1].For instance,as of 2021,over 40%(52 million)of all nurses in the United States(US)were expatriates[2].In the United Kingdom(UK),the percentage of expatriate nurses was even higher,reaching approximately 18%in 2021[3].Owing to globalization and migration,healthcare providers must possess cultural competence to deliver improved care[4,5].Culturally responsive teaching(CRT)is rooted in the idea that culture plays a vital role in shaping people’s behaviors,beliefs,values,and communication styles[6].Furthermore,these cultural factors influence patients’perspectives on health,illness,healing,and their preferences for care and communication[7].By recognizing and embracing these cultural differences,nurses can provide more effective and compassionate care to their diverse patient population[8].
基金supported by the National Key Research and Development Program of China under Grant No.2019YFB1802800the National Natural Science Foundation of China under Grant No.62002055,62032013,61872073,62202247.
文摘The rapid development of 5G/6G and AI enables an environment of Internet of Everything(IoE)which can support millions of connected mobile devices and applications to operate smoothly at high speed and low delay.However,these massive devices will lead to explosive traffic growth,which in turn cause great burden for the data transmission and content delivery.This challenge can be eased by sinking some critical content from cloud to edge.In this case,how to determine the critical content,where to sink and how to access the content correctly and efficiently become new challenges.This work focuses on establishing a highly efficient content delivery framework in the IoE environment.In particular,the IoE environment is re-constructed as an end-edge-cloud collaborative system,in which the concept of digital twin is applied to promote the collaboration.Based on the digital asset obtained by digital twin from end users,a content popularity prediction scheme is firstly proposed to decide the critical content by using the Temporal Pattern Attention(TPA)enabled Long Short-Term Memory(LSTM)model.Then,the prediction results are input for the proposed caching scheme to decide where to sink the critical content by using the Reinforce Learning(RL)technology.Finally,a collaborative routing scheme is proposed to determine the way to access the content with the objective of minimizing overhead.The experimental results indicate that the proposed schemes outperform the state-of-the-art benchmarks in terms of the caching hit rate,the average throughput,the successful content delivery rate and the average routing overhead.
基金Supported by The Innovative Experimental Project of Provincial Higher Education Institutions by Sichuan Provincial Department of Education in 2023(90).
文摘Synthetic biology is a new frontier of life science,which aims to design,transform and even synthesize organisms with engineering design concept.Doing a good job in the teaching of"synthetic biology"is of great significance to the cultivation and reserve of biotechnology professionals in China,and also has an important impact on students' employment competitiveness.Under the background of"new engineering",the course reform of"synthetic biology"was carried out in terms of the construction of teaching staff,teaching methods,students' participation and the innovation of course content,and specific reform suggestions were put forward,hoping to effectively promote the sustainable development of"synthetic biology"and effectively improve the quality of education.
文摘This study aimed to examine the surface and content validity of the Mentoring Function Scale for Novice Nurses, used to assess the mentoring of entry-level nurses, and to refine the scale items. In Study 1, six nurse education researchers, selected using convenience sampling, with five or more years of nursing experience and experience teaching novice nurses, were invited to an expert meeting in July 2015. A group interview was conducted that lasted approximately 120 minutes. Study 2 examined the content validity index. Between September and November 2015, we distributed a self-administered questionnaire survey to 11 participants selected by convenience sampling. The participants included five nurse education researchers with a minimum of five years of nursing experience and experience teaching novice nurses, as well as six clinical nurses with a master’s degree or higher. Finally, 81 questionnaire items were retained from the initial 125 items. The 81-item Mentoring Function Scale for Novice Nurses had higher content validity than the original scale. To further increase the scale’s applicability, future studies should assess its reliability, construct validity, and criterion-related validity.
文摘BACKGROUND With the continuous development and progress of medical technology,the position of surgical nursing in the field of clinical medicine is becoming in-creasingly prominent.As an important branch of the surgical field,the nursing requirements and difficulty of gastrointestinal surgery are also increasing.In order to improve the teaching quality of nursing care in gastrointestinal surgery,many educators and researchers are actively exploring new teaching methods.Among them,the teaching method case-based learning(CBL),scene-simulated learning(SSL),task-based learning(TBL),combining self-evaluation and training mode is considered as an effective method.This method aims to help students to better master knowledge and skills and improve their comprehensive quality by cultivating their self-evaluation ability.AIM To explore the practical effect of CBL-SSL-TBL combined with training mode and student self-assessment in nursing teaching of gastrointestinal surgery.METHODS Seventy-one nursing interns in our hospital from December 2020 to December 2021 were selected.According to different teaching modes,they were divided into observation group CBL-SSL-TBL combined with training mode combined with student self-assessment and control group(conventional teaching mode),of which 36 were in observation group and 35 were in control group.The results of operational skills,theoretical knowledge,nursing students'satisfaction,learning effectiveness questionnaire and teaching effect were compared between the two groups.RESULTS Compared between the two groups,the operational skills and theoretical knowledge scores of the observation group were higher than those of the control group,and the difference was statistically significant(P<0.05).Compared between the two groups,the total satisfaction ratio of the observation group was higher than that of the control group,the difference was statistically significant(P<0.05).Compared between the two groups,the observation group was lower than the control group in the questionnaire results of learning efficacy,and the difference was statistically significant(P<0.05).Compared between the two groups,the proportion of thinking ability,subjective initiative and understanding of theoretical knowledge in the observation group was higher than that in the control group,the difference was statistically significant(P<0.05).CONCLUSION The use of CBL-SSL-TBL combined with training mode and student self-assessment in gastrointestinal surgery nursing teaching can improve the operational skills of nursing interns,theoretical knowledge and satisfaction scores of nursing students,improve the results of learning efficiency questionnaire and teaching effect,which can be popularized in clinical teaching.