This study focuses on the analysis of the Chinese composition writing performance of fourth,fifth,and sixth grade students in 16 selected schools in Longhua District,Shenzhen during the spring semester of 2023.Using L...This study focuses on the analysis of the Chinese composition writing performance of fourth,fifth,and sixth grade students in 16 selected schools in Longhua District,Shenzhen during the spring semester of 2023.Using LIWC(Linguistic Inquiry and Word Count)as a text analysis tool,the study explores the impact of LIWC categories on writing performance which is scaled by score.The results show that the simple LIWC word categories have a significant positive influence on the composition scores of lower-grade students;while complex LIWC word categories have a significant negative influence on the composition scores of lower-grade students but a significant positive influence on the composition scores of higher-grade students.Process word categories have a positive influence on the composition scores of all three grades,but the impact of complex process word categories increases as the grade level rises.展开更多
This study,drawing on the commonalities between generative artificial intelligence and foreign language writing instruction,outlines the core ideology of digital humanities-based college English writing instruction,in...This study,drawing on the commonalities between generative artificial intelligence and foreign language writing instruction,outlines the core ideology of digital humanities-based college English writing instruction,including auxiliary use of generative artificial intelligence tools,primary focus on humanistic education,and the re-production of knowledge,aiming to foster students’critical thinking,collaborative skills,and creativity.Building on this foundation,the study delves into generative artificial intelligence tools applicable to different stages of process-genre writing and their strategic applications.The use of generative artificial intelligence tools is beneficial for students to present,discuss,and share writing content,encouraging them to enhance their writing,collaboration,critical thinking,and creative abilities through deep interaction with model essays and creative discourses.展开更多
Integrated writing tasks,requiring writers to summarize source content and integrate their ideas or experience with those in the source text,are widely used in standardized tests of English proficiency.Integrated writ...Integrated writing tasks,requiring writers to summarize source content and integrate their ideas or experience with those in the source text,are widely used in standardized tests of English proficiency.Integrated writing adds an element not found in traditional independent writing:the use of source text material.Recently,concern has been raised that over-reliance on source texts in integrated writing may lead to plagiarism as well as inaccurate assessment which calls for further investigation.Research on L2 students’writing using sources has broadened its focus from transgressive citing practices to stages of skill development in this complicated literacy,the successive challenges students face,and how instruction might be of benefit.Previous literature mainly focused on source use in academic writing and seldom considered summary writing in standardized tests,while summary strategy is particularly important in standardized tests,in which summary accounts for a significant part of the assessment criteria.Given that a series of previous literature have indicated that source text use,source texts,and prompts are associated with the quality of summary writing,this article reviews the source text borrowing in the summary of integrated writing to further explore the relationship between some variables and the quality of summary writing and therefore finds some research gaps in this field.展开更多
This empirical study examines ChatGPT as an educational and learning tool.It investigates the opportunities and challenges that ChatGPT provides to the students and instructors of communication,business writing,and co...This empirical study examines ChatGPT as an educational and learning tool.It investigates the opportunities and challenges that ChatGPT provides to the students and instructors of communication,business writing,and composition courses.It also strives to provide recommendations.After conducting 30 theory-based and application-based ChatGPT tests,it is found that ChatGPT has the potential of replacing search engines as it provides accurate and reliable input to students.For opportunities,the study found that ChatGPT provides a platform for students to seek answers to theory-based questions and generate ideas for application-based questions.It also provides a platform for instructors to integrate technology in classrooms and conduct workshops to discuss and evaluate generated responses.For challenges,the study found that ChatGPT,if unethically used by students,may lead to human unintelligence and unlearning.This may also present a challenge to instructors as the use of ChatGPT negatively affects their ability to differentiate between meticulous and automation-dependent students,on the one hand,and measure the achievement of learning outcomes,on the other hand.Based on the outcome of the analysis,this study recommends communication,business writing,and composition instructors to(1)refrain from making theory-based questions as take-home assessments,(2)provide communication and business writing students with detailed case-based and scenario-based assessment tasks that call for personalized answers utilizing critical,creative,and imaginative thinking incorporating lectures and textbook material,(3)enforce submitting all take-home assessments on plagiarism detection software,especially for composition courses,and(4)integrate ChatGPT generated responses in classes as examples to be discussed in workshops.Remarkably,this study found that ChatGPT skillfully paraphrases regenerated responses in a way that is not detected by similarity detection software.To maintain their effectiveness,similarity detection software providers need to upgrade their software to avoid such incidents from slipping unnoticed.展开更多
This paper reports the fabrication of regular large-area laser-induced periodic surface structures(LIPSSs)in indium tin oxide(ITO)films via femtosecond laser direct writing focused by a cylindrical lens.The regular LI...This paper reports the fabrication of regular large-area laser-induced periodic surface structures(LIPSSs)in indium tin oxide(ITO)films via femtosecond laser direct writing focused by a cylindrical lens.The regular LIPSSs exhibited good properties as nanowires,with a resistivity almost equal to that of the initial ITO film.By changing the laser fluence,the nanowire resistances could be tuned from 15 to 73 kΩ/mm with a consistency of±10%.Furthermore,the average transmittance of the ITO films with regular LIPSSs in the range of 1200-2000 nm was improved from 21%to 60%.The regular LIPSS is promising for transparent electrodes of nano-optoelectronic devices-particularly in the near-infrared band.展开更多
Acetabular cups,which are among themost important implants in total hip arthroplasty,are usually made from titanium alloys with high porosity and adequate mechanical properties.The current three-dimensional(3D)printin...Acetabular cups,which are among themost important implants in total hip arthroplasty,are usually made from titanium alloys with high porosity and adequate mechanical properties.The current three-dimensional(3D)printing approaches to fabricate customized acetabular cups have some inherent disadvantages such as high cost and energy consumption,residual thermal stress,and relatively low efficiency.Thus,in this work,a direct ink writing method was developed to print a cup structure at room temperature,followed by multi-step heat treatment to form microscale porous structure within the acetabular cup.Our method is facilitated by the development of a self-supporting titanium-6 aluminum-4 vanadium(Ti64)ink that is composed of Ti64 particles,bentonite yield-stress additive,ultraviolet curable polymer,and photo-initiator.The effects of Ti64 and bentonite concentrations on the rheological properties and printability of inks were systematically investigated.Moreover,the printing conditions,geometrical limitations,and maximum curing depth were explored.Finally,some complex 3D structures,including lattices with different gap distances,honeycomb with a well-defined shape,and an acetabular cup with uniformly distributed micropores,were successfully printed/fabricated to validate the effectiveness of the proposed method.展开更多
Flexible and wearable humidity sensors play a vital role in daily point-of-care diagnosis and noncontact human-machine interactions.However,achieving a facile and high-speed fabrication approach to realizing flexible ...Flexible and wearable humidity sensors play a vital role in daily point-of-care diagnosis and noncontact human-machine interactions.However,achieving a facile and high-speed fabrication approach to realizing flexible humidity sensors remains a challenge.In this work,a wearable capacitive-type Ga_(2)O_(3)/liquid metal-based humidity sensor is demonstrated by a one-step laser direct writing technique.Owing to the photothermal effect of laser,the Ga_(2)O_(3)-wrapped liquid metal particles can be selectively sintered and converted from insulative to conductive traces with a resistivity of 0.19Ω·cm,while the untreated regions serve as active sensing layers in response to moisture changes.Under 95%relative humidity,the humidity sensor displays a highly stable performance along with rapid response and recover time.Utilizing these superior properties,the Ga_(2)O_(3)/liquid metal-based humidity sensor is able to monitor human respiration rate,as well as skin moisture of the palm under different physiological states for healthcare monitoring.展开更多
Diverse natural organisms possess stimulus-responsive structures to adapt to the surrounding environment.Inspired by nature,researchers have developed various smart stimulus-responsive structures with adjustable prope...Diverse natural organisms possess stimulus-responsive structures to adapt to the surrounding environment.Inspired by nature,researchers have developed various smart stimulus-responsive structures with adjustable properties and functions to address the demands of ever-changing application environments that are becoming more intricate.Among many fabrication methods for stimulus-responsive structures,femtosecond laser direct writing(FsLDW)has received increasing attention because of its high precision,simplicity,true three-dimensional machining ability,and wide applicability to almost all materials.This paper systematically outlines state-of-the-art research on stimulus-responsive structures prepared by FsLDW.Based on the introduction of femtosecond laser-matter interaction and mainstream FsLDW-based manufacturing strategies,different stimulating factors that can trigger structural responses of prepared intelligent structures,such as magnetic field,light,temperature,pH,and humidity,are emphatically summarized.Various applications of functional structures with stimuli-responsive dynamic behaviors fabricated by FsLDW,as well as the present obstacles and forthcoming development opportunities,are discussed.展开更多
Direct ink writing(DIW)holds enormous potential in fabricating multiscale and multi-functional architectures by virtue of its wide range of printable materials,simple operation,and ease of rapid prototyping.Although i...Direct ink writing(DIW)holds enormous potential in fabricating multiscale and multi-functional architectures by virtue of its wide range of printable materials,simple operation,and ease of rapid prototyping.Although it is well known that ink rheology and processing parameters have a direct impact on the resolution and shape of the printed objects,the underlying mechanisms of these key factors on the printability and quality of DIW technique remain poorly understood.To tackle this issue,we systematically analyzed the printability and quality through extrusion mechanism modeling and experimental validating.Hybrid non-Newtonian fluid inks were first prepared,and their rheological properties were measured.Then,finite element analysis of the whole DIW process was conducted to reveal the flow dynamics of these inks.The obtained optimal process parameters(ink rheology,applied pressure,printing speed,etc)were also validated by experiments where high-resolution(<100μm)patterns were fabricated rapidly(>70 mm s^(-1)).Finally,as a process research demonstration,we printed a series of microstructures and circuit systems with hybrid inks and silver inks,showing the suitability of the printable process parameters.This study provides a strong quantitative illustration of the use of DIW for the high-speed preparation of high-resolution,high-precision samples.展开更多
In this paper,Modified Multi-scale Segmentation Network(MMU-SNet)method is proposed for Tamil text recognition.Handwritten texts from digi-tal writing pad notes are used for text recognition.Handwritten words recognit...In this paper,Modified Multi-scale Segmentation Network(MMU-SNet)method is proposed for Tamil text recognition.Handwritten texts from digi-tal writing pad notes are used for text recognition.Handwritten words recognition for texts written from digital writing pad through text file conversion are challen-ging due to stylus pressure,writing on glass frictionless surfaces,and being less skilled in short writing,alphabet size,style,carved symbols,and orientation angle variations.Stylus pressure on the pad changes the words in the Tamil language alphabet because the Tamil alphabets have a smaller number of lines,angles,curves,and bends.The small change in dots,curves,and bends in the Tamil alphabet leads to error in recognition and changes the meaning of the words because of wrong alphabet conversion.However,handwritten English word recognition and conversion of text files from a digital writing pad are performed through various algorithms such as Support Vector Machine(SVM),Kohonen Neural Network(KNN),and Convolutional Neural Network(CNN)for offline and online alphabet recognition.The proposed algorithms are compared with above algorithms for Tamil word recognition.The proposed MMU-SNet method has achieved good accuracy in predicting text,about 96.8%compared to other traditional CNN algorithms.展开更多
Historical studies on the character of Lily Bart in Edith Wharton’s The House of Mirth have predominantly revolved around psychology,sociology,and aesthetics,yet neglecting the significance and role of the body withi...Historical studies on the character of Lily Bart in Edith Wharton’s The House of Mirth have predominantly revolved around psychology,sociology,and aesthetics,yet neglecting the significance and role of the body within the narrative.Using Brooks’s concept of body writing,this paper focuses on exploring Lily’s body in three dimensions:the body of vision(self-objectification);the body of privacy(moral dilemma);and the body of modernity(overdose symbolizing the clash of science and humanity).Scrutinizing and analyzing the body writing in The House of Mirth reveal the feminist undercurrents of Lily’s character and highlight the broader and significant role of body writing in literary works.展开更多
Persuasive or argumentative writing,which focuses on the reader and seeks to change the reader’s mind,or to bring the reader’s point of view to the writer’s,is the most prominent and practical academic writing and ...Persuasive or argumentative writing,which focuses on the reader and seeks to change the reader’s mind,or to bring the reader’s point of view to the writer’s,is the most prominent and practical academic writing and is also the most complex and most challenging.To achieve the persuasive purpose,audience is a key element to consider.But unfortunately,many Chinese college students have no sense of audience at all.Besides,although some researchers have mentioned in their books or papers the important role the audience plays in persuasive writing,so far few writing books or papers have made a relatively comprehensive and systematic study and exploration of how to strengthen Chinese college students’audience awareness.So,this paper,which is intended to elaborate on it,first gives a definition to audience awareness,then analyzes the influence audience awareness exerts on persuasive writing,and finally proposes a few feasible and effective methods to strengthen Chinese college students’audience awareness.展开更多
Chi Zijian’s novel White Snow Crow is about the pestis in Northeast China from the autumn and winter of 1910 to the spring of 1911,focusing on the living conditions of people in Fujiadian,Harbin,under the shadow of t...Chi Zijian’s novel White Snow Crow is about the pestis in Northeast China from the autumn and winter of 1910 to the spring of 1911,focusing on the living conditions of people in Fujiadian,Harbin,under the shadow of the pestis,and thus connects the vicissitudes of Harbin in the development of modern Chinese history.Re-reading this novel in the context of the post-epidemic era not only allows us to immerse ourselves in the specific temporal and spatial fields described in the text with an immersive reading mindset,feel the heavy impact that the disaster has brought to the people of Northeast China,but also provide us with a different perspective to observe the current social reality.In particular,the social problems shown by the novel through the pestis and the description of ordinary people’s life experience under the plague still deserve further discussion.展开更多
As the cross-cultural communication activities have become increasingly frequent,teaching of writing,one of cross-cultural communication activities,sets“developing students’cross-cultural awareness”as one of its go...As the cross-cultural communication activities have become increasingly frequent,teaching of writing,one of cross-cultural communication activities,sets“developing students’cross-cultural awareness”as one of its goals.However,traditional language teaching,which focuses on linguistic knowledge rather than cultural knowledge,results in the cultural barrier problems among students.This paper analyzes the manifestation of cultural barriers from the aspect of language and puts forward some corresponding approaches and methods.展开更多
This paper reveals and categorizes the most typical writing problems found amongst the Chinese university students.It also analyzes the underlying causes.The findings could have implications for all Chinese English le...This paper reveals and categorizes the most typical writing problems found amongst the Chinese university students.It also analyzes the underlying causes.The findings could have implications for all Chinese English learners.In the end,the author presents suggestions for the improvement of the English writing teaching in China.展开更多
English as an international language,English writing is a very important skill as an important form of language output,which is not only an important means of expressing emotions and awareness,but also reflects the ab...English as an international language,English writing is a very important skill as an important form of language output,which is not only an important means of expressing emotions and awareness,but also reflects the ability to use language in an integrated way.In language teaching,the development of English writing skills is an important and challenging teaching task.English writing language is expressed not only at the basic level of vocabulary,grammar,and sentence structure,but also at the higher-order level of text organization,logical reasoning,and argumentation.However,in traditional English writing teaching,students usually do not have the opportunity to have an in-depth experience of the context of the topic,which leads to a lack of motivation and poor writing results.Therefore,this study developed an SVVR learning system based on spherical video-based virtual reality(SVVR)technology and conducted a quasi-experiment in a university English major classroom.The results of the study showed that the SVVR-supported approach to English writing could improve students'writing performance,enrich writing content,and increase learning motivation.展开更多
This qualitative research study attempts to discover the real thinking process of learners who are native Chinese speakers in Academic English Writing(AEW)through interviews.Introspecting an EFL learner’s thinking pr...This qualitative research study attempts to discover the real thinking process of learners who are native Chinese speakers in Academic English Writing(AEW)through interviews.Introspecting an EFL learner’s thinking process in English writing is based on two theories:critical period hypothesis and translanguaging.The results of the study indicate that translanguaging has a positive impact on the English CET-4 writing of learners who lack proficiency in English.For those learners who lack proficiency in the second language,translanguaging is an effective auxiliary tool for them to complete AEW.展开更多
Teaching writing is an essential component of Chinese education in primary schools and an important foundation for students’reading,writing,and core literacy development.However,due to various reasons,children in the...Teaching writing is an essential component of Chinese education in primary schools and an important foundation for students’reading,writing,and core literacy development.However,due to various reasons,children in the lower grades always face multiple difficulties in the learning task of writing.Based on this educational status quo,this article puts forward strategic suggestions for improving writing skills in the lower grades of primary school.Teachers should analyze students and attend to each student individually,optimize teaching methods,and implement hierarchical teaching.They should also strengthen the training of students’fine motor skills to solidify the physiological foundation for writing.Emphasis should be placed on cultivating the core quality of aesthetic creation.Employing multiple process evaluations can inspire children’s long-term interest in learning.展开更多
In language teaching,the development of writing skills is an important and challenging teaching task.Writing performance is not only related to the vocabulary and syntax that students usually accumulate,but also invol...In language teaching,the development of writing skills is an important and challenging teaching task.Writing performance is not only related to the vocabulary and syntax that students usually accumulate,but also involves richness in terms of content,which is related to students'experience and perception of context.Descriptive essays are one of the writing genres that include specific understanding and perception of space,time,and context.However,in traditional writing instruction,students usually do not have the opportunity to have a deeper sense of the context of the topic.As a result,students usually have limited expression in the writing process.Therefore,this study explores the application of experiential teaching method in teaching writing in elementary schools by taking the"underwater world"as an example.Based on this,an SVVR learning system was developed and a quasi-experiment was conducted in an elementary school writing classroom to compare the learning effects of this method with those of traditional teaching methods.The results of the study showed that the SVVR-supported experiential teaching method could improve students'writing performance as well as their sense of self-efficacy and self-efficacy.展开更多
文摘This study focuses on the analysis of the Chinese composition writing performance of fourth,fifth,and sixth grade students in 16 selected schools in Longhua District,Shenzhen during the spring semester of 2023.Using LIWC(Linguistic Inquiry and Word Count)as a text analysis tool,the study explores the impact of LIWC categories on writing performance which is scaled by score.The results show that the simple LIWC word categories have a significant positive influence on the composition scores of lower-grade students;while complex LIWC word categories have a significant negative influence on the composition scores of lower-grade students but a significant positive influence on the composition scores of higher-grade students.Process word categories have a positive influence on the composition scores of all three grades,but the impact of complex process word categories increases as the grade level rises.
文摘This study,drawing on the commonalities between generative artificial intelligence and foreign language writing instruction,outlines the core ideology of digital humanities-based college English writing instruction,including auxiliary use of generative artificial intelligence tools,primary focus on humanistic education,and the re-production of knowledge,aiming to foster students’critical thinking,collaborative skills,and creativity.Building on this foundation,the study delves into generative artificial intelligence tools applicable to different stages of process-genre writing and their strategic applications.The use of generative artificial intelligence tools is beneficial for students to present,discuss,and share writing content,encouraging them to enhance their writing,collaboration,critical thinking,and creative abilities through deep interaction with model essays and creative discourses.
文摘Integrated writing tasks,requiring writers to summarize source content and integrate their ideas or experience with those in the source text,are widely used in standardized tests of English proficiency.Integrated writing adds an element not found in traditional independent writing:the use of source text material.Recently,concern has been raised that over-reliance on source texts in integrated writing may lead to plagiarism as well as inaccurate assessment which calls for further investigation.Research on L2 students’writing using sources has broadened its focus from transgressive citing practices to stages of skill development in this complicated literacy,the successive challenges students face,and how instruction might be of benefit.Previous literature mainly focused on source use in academic writing and seldom considered summary writing in standardized tests,while summary strategy is particularly important in standardized tests,in which summary accounts for a significant part of the assessment criteria.Given that a series of previous literature have indicated that source text use,source texts,and prompts are associated with the quality of summary writing,this article reviews the source text borrowing in the summary of integrated writing to further explore the relationship between some variables and the quality of summary writing and therefore finds some research gaps in this field.
文摘This empirical study examines ChatGPT as an educational and learning tool.It investigates the opportunities and challenges that ChatGPT provides to the students and instructors of communication,business writing,and composition courses.It also strives to provide recommendations.After conducting 30 theory-based and application-based ChatGPT tests,it is found that ChatGPT has the potential of replacing search engines as it provides accurate and reliable input to students.For opportunities,the study found that ChatGPT provides a platform for students to seek answers to theory-based questions and generate ideas for application-based questions.It also provides a platform for instructors to integrate technology in classrooms and conduct workshops to discuss and evaluate generated responses.For challenges,the study found that ChatGPT,if unethically used by students,may lead to human unintelligence and unlearning.This may also present a challenge to instructors as the use of ChatGPT negatively affects their ability to differentiate between meticulous and automation-dependent students,on the one hand,and measure the achievement of learning outcomes,on the other hand.Based on the outcome of the analysis,this study recommends communication,business writing,and composition instructors to(1)refrain from making theory-based questions as take-home assessments,(2)provide communication and business writing students with detailed case-based and scenario-based assessment tasks that call for personalized answers utilizing critical,creative,and imaginative thinking incorporating lectures and textbook material,(3)enforce submitting all take-home assessments on plagiarism detection software,especially for composition courses,and(4)integrate ChatGPT generated responses in classes as examples to be discussed in workshops.Remarkably,this study found that ChatGPT skillfully paraphrases regenerated responses in a way that is not detected by similarity detection software.To maintain their effectiveness,similarity detection software providers need to upgrade their software to avoid such incidents from slipping unnoticed.
基金We are grateful for financial supports from the Ministry of Science and Technology of China(Grant No.2021YFA1401100)National Natural Science Foundation of China(Grant Nos.12074123,11804227,91950112),and the Foundation of‘Manufacturing beyond limits’of Shanghai.
文摘This paper reports the fabrication of regular large-area laser-induced periodic surface structures(LIPSSs)in indium tin oxide(ITO)films via femtosecond laser direct writing focused by a cylindrical lens.The regular LIPSSs exhibited good properties as nanowires,with a resistivity almost equal to that of the initial ITO film.By changing the laser fluence,the nanowire resistances could be tuned from 15 to 73 kΩ/mm with a consistency of±10%.Furthermore,the average transmittance of the ITO films with regular LIPSSs in the range of 1200-2000 nm was improved from 21%to 60%.The regular LIPSS is promising for transparent electrodes of nano-optoelectronic devices-particularly in the near-infrared band.
基金supported by the Micro Grant (PG20473) at the University of Nevada, Reno, USA
文摘Acetabular cups,which are among themost important implants in total hip arthroplasty,are usually made from titanium alloys with high porosity and adequate mechanical properties.The current three-dimensional(3D)printing approaches to fabricate customized acetabular cups have some inherent disadvantages such as high cost and energy consumption,residual thermal stress,and relatively low efficiency.Thus,in this work,a direct ink writing method was developed to print a cup structure at room temperature,followed by multi-step heat treatment to form microscale porous structure within the acetabular cup.Our method is facilitated by the development of a self-supporting titanium-6 aluminum-4 vanadium(Ti64)ink that is composed of Ti64 particles,bentonite yield-stress additive,ultraviolet curable polymer,and photo-initiator.The effects of Ti64 and bentonite concentrations on the rheological properties and printability of inks were systematically investigated.Moreover,the printing conditions,geometrical limitations,and maximum curing depth were explored.Finally,some complex 3D structures,including lattices with different gap distances,honeycomb with a well-defined shape,and an acetabular cup with uniformly distributed micropores,were successfully printed/fabricated to validate the effectiveness of the proposed method.
基金This study was supported by the National Natural Science Foundation of China (52105593 and 62271439)STI 2030 —Major Projects(2022ZD0208601)the “Pioneer” and “Leading Goose” R&D Program of Zhejiang (2023C01051)。
文摘Flexible and wearable humidity sensors play a vital role in daily point-of-care diagnosis and noncontact human-machine interactions.However,achieving a facile and high-speed fabrication approach to realizing flexible humidity sensors remains a challenge.In this work,a wearable capacitive-type Ga_(2)O_(3)/liquid metal-based humidity sensor is demonstrated by a one-step laser direct writing technique.Owing to the photothermal effect of laser,the Ga_(2)O_(3)-wrapped liquid metal particles can be selectively sintered and converted from insulative to conductive traces with a resistivity of 0.19Ω·cm,while the untreated regions serve as active sensing layers in response to moisture changes.Under 95%relative humidity,the humidity sensor displays a highly stable performance along with rapid response and recover time.Utilizing these superior properties,the Ga_(2)O_(3)/liquid metal-based humidity sensor is able to monitor human respiration rate,as well as skin moisture of the palm under different physiological states for healthcare monitoring.
基金supported by the National Natural Science Foundation of China (Nos. 52122511, 52105492, and 62005262)the National Key Research and Development Program of China (No. 2021YFF0502700)+2 种基金the Students’ Innovation and Entrepreneurship Foundation of USTC (Nos. CY2022G32 and XY2022G02CY)the USTC Research Funds of the Double First-Class Initiative (No. YD2340002009)CAS Project for Young Scientists in Basic Research (No. YSBR-049)
文摘Diverse natural organisms possess stimulus-responsive structures to adapt to the surrounding environment.Inspired by nature,researchers have developed various smart stimulus-responsive structures with adjustable properties and functions to address the demands of ever-changing application environments that are becoming more intricate.Among many fabrication methods for stimulus-responsive structures,femtosecond laser direct writing(FsLDW)has received increasing attention because of its high precision,simplicity,true three-dimensional machining ability,and wide applicability to almost all materials.This paper systematically outlines state-of-the-art research on stimulus-responsive structures prepared by FsLDW.Based on the introduction of femtosecond laser-matter interaction and mainstream FsLDW-based manufacturing strategies,different stimulating factors that can trigger structural responses of prepared intelligent structures,such as magnetic field,light,temperature,pH,and humidity,are emphatically summarized.Various applications of functional structures with stimuli-responsive dynamic behaviors fabricated by FsLDW,as well as the present obstacles and forthcoming development opportunities,are discussed.
基金supported by National Natural Science Foundation of China(Nos.52188102,U2013213,51820105008)the Technology Innovation Project of Hubei Province of China under Grant No.2019AEA171+1 种基金The project of introducing innovative leading talents in Songshan Lake High-tech Zone,Dongguan City,Guangdong Province(No.2019342101RSFJ-G)the support from Flexible Electronics Research Center of HUST for providing experiment facility。
文摘Direct ink writing(DIW)holds enormous potential in fabricating multiscale and multi-functional architectures by virtue of its wide range of printable materials,simple operation,and ease of rapid prototyping.Although it is well known that ink rheology and processing parameters have a direct impact on the resolution and shape of the printed objects,the underlying mechanisms of these key factors on the printability and quality of DIW technique remain poorly understood.To tackle this issue,we systematically analyzed the printability and quality through extrusion mechanism modeling and experimental validating.Hybrid non-Newtonian fluid inks were first prepared,and their rheological properties were measured.Then,finite element analysis of the whole DIW process was conducted to reveal the flow dynamics of these inks.The obtained optimal process parameters(ink rheology,applied pressure,printing speed,etc)were also validated by experiments where high-resolution(<100μm)patterns were fabricated rapidly(>70 mm s^(-1)).Finally,as a process research demonstration,we printed a series of microstructures and circuit systems with hybrid inks and silver inks,showing the suitability of the printable process parameters.This study provides a strong quantitative illustration of the use of DIW for the high-speed preparation of high-resolution,high-precision samples.
文摘In this paper,Modified Multi-scale Segmentation Network(MMU-SNet)method is proposed for Tamil text recognition.Handwritten texts from digi-tal writing pad notes are used for text recognition.Handwritten words recognition for texts written from digital writing pad through text file conversion are challen-ging due to stylus pressure,writing on glass frictionless surfaces,and being less skilled in short writing,alphabet size,style,carved symbols,and orientation angle variations.Stylus pressure on the pad changes the words in the Tamil language alphabet because the Tamil alphabets have a smaller number of lines,angles,curves,and bends.The small change in dots,curves,and bends in the Tamil alphabet leads to error in recognition and changes the meaning of the words because of wrong alphabet conversion.However,handwritten English word recognition and conversion of text files from a digital writing pad are performed through various algorithms such as Support Vector Machine(SVM),Kohonen Neural Network(KNN),and Convolutional Neural Network(CNN)for offline and online alphabet recognition.The proposed algorithms are compared with above algorithms for Tamil word recognition.The proposed MMU-SNet method has achieved good accuracy in predicting text,about 96.8%compared to other traditional CNN algorithms.
文摘Historical studies on the character of Lily Bart in Edith Wharton’s The House of Mirth have predominantly revolved around psychology,sociology,and aesthetics,yet neglecting the significance and role of the body within the narrative.Using Brooks’s concept of body writing,this paper focuses on exploring Lily’s body in three dimensions:the body of vision(self-objectification);the body of privacy(moral dilemma);and the body of modernity(overdose symbolizing the clash of science and humanity).Scrutinizing and analyzing the body writing in The House of Mirth reveal the feminist undercurrents of Lily’s character and highlight the broader and significant role of body writing in literary works.
基金This paper is supported by Sichuan Foreign Language and Literature Research Center(Project No.:SCWYGJ22-18)it is also the research result of“English Writing”,one of the second batch of online and offline first-class undergraduate courses in Sichuan Province(2021).
文摘Persuasive or argumentative writing,which focuses on the reader and seeks to change the reader’s mind,or to bring the reader’s point of view to the writer’s,is the most prominent and practical academic writing and is also the most complex and most challenging.To achieve the persuasive purpose,audience is a key element to consider.But unfortunately,many Chinese college students have no sense of audience at all.Besides,although some researchers have mentioned in their books or papers the important role the audience plays in persuasive writing,so far few writing books or papers have made a relatively comprehensive and systematic study and exploration of how to strengthen Chinese college students’audience awareness.So,this paper,which is intended to elaborate on it,first gives a definition to audience awareness,then analyzes the influence audience awareness exerts on persuasive writing,and finally proposes a few feasible and effective methods to strengthen Chinese college students’audience awareness.
文摘Chi Zijian’s novel White Snow Crow is about the pestis in Northeast China from the autumn and winter of 1910 to the spring of 1911,focusing on the living conditions of people in Fujiadian,Harbin,under the shadow of the pestis,and thus connects the vicissitudes of Harbin in the development of modern Chinese history.Re-reading this novel in the context of the post-epidemic era not only allows us to immerse ourselves in the specific temporal and spatial fields described in the text with an immersive reading mindset,feel the heavy impact that the disaster has brought to the people of Northeast China,but also provide us with a different perspective to observe the current social reality.In particular,the social problems shown by the novel through the pestis and the description of ordinary people’s life experience under the plague still deserve further discussion.
文摘As the cross-cultural communication activities have become increasingly frequent,teaching of writing,one of cross-cultural communication activities,sets“developing students’cross-cultural awareness”as one of its goals.However,traditional language teaching,which focuses on linguistic knowledge rather than cultural knowledge,results in the cultural barrier problems among students.This paper analyzes the manifestation of cultural barriers from the aspect of language and puts forward some corresponding approaches and methods.
文摘This paper reveals and categorizes the most typical writing problems found amongst the Chinese university students.It also analyzes the underlying causes.The findings could have implications for all Chinese English learners.In the end,the author presents suggestions for the improvement of the English writing teaching in China.
文摘English as an international language,English writing is a very important skill as an important form of language output,which is not only an important means of expressing emotions and awareness,but also reflects the ability to use language in an integrated way.In language teaching,the development of English writing skills is an important and challenging teaching task.English writing language is expressed not only at the basic level of vocabulary,grammar,and sentence structure,but also at the higher-order level of text organization,logical reasoning,and argumentation.However,in traditional English writing teaching,students usually do not have the opportunity to have an in-depth experience of the context of the topic,which leads to a lack of motivation and poor writing results.Therefore,this study developed an SVVR learning system based on spherical video-based virtual reality(SVVR)technology and conducted a quasi-experiment in a university English major classroom.The results of the study showed that the SVVR-supported approach to English writing could improve students'writing performance,enrich writing content,and increase learning motivation.
文摘This qualitative research study attempts to discover the real thinking process of learners who are native Chinese speakers in Academic English Writing(AEW)through interviews.Introspecting an EFL learner’s thinking process in English writing is based on two theories:critical period hypothesis and translanguaging.The results of the study indicate that translanguaging has a positive impact on the English CET-4 writing of learners who lack proficiency in English.For those learners who lack proficiency in the second language,translanguaging is an effective auxiliary tool for them to complete AEW.
文摘Teaching writing is an essential component of Chinese education in primary schools and an important foundation for students’reading,writing,and core literacy development.However,due to various reasons,children in the lower grades always face multiple difficulties in the learning task of writing.Based on this educational status quo,this article puts forward strategic suggestions for improving writing skills in the lower grades of primary school.Teachers should analyze students and attend to each student individually,optimize teaching methods,and implement hierarchical teaching.They should also strengthen the training of students’fine motor skills to solidify the physiological foundation for writing.Emphasis should be placed on cultivating the core quality of aesthetic creation.Employing multiple process evaluations can inspire children’s long-term interest in learning.
文摘In language teaching,the development of writing skills is an important and challenging teaching task.Writing performance is not only related to the vocabulary and syntax that students usually accumulate,but also involves richness in terms of content,which is related to students'experience and perception of context.Descriptive essays are one of the writing genres that include specific understanding and perception of space,time,and context.However,in traditional writing instruction,students usually do not have the opportunity to have a deeper sense of the context of the topic.As a result,students usually have limited expression in the writing process.Therefore,this study explores the application of experiential teaching method in teaching writing in elementary schools by taking the"underwater world"as an example.Based on this,an SVVR learning system was developed and a quasi-experiment was conducted in an elementary school writing classroom to compare the learning effects of this method with those of traditional teaching methods.The results of the study showed that the SVVR-supported experiential teaching method could improve students'writing performance as well as their sense of self-efficacy and self-efficacy.
