With the development of human-computer interaction technology,brain-computer interface(BCI)has been widely used in medical,entertainment,military,and other fields.Imagined speech is the latest paradigm of BCI and repr...With the development of human-computer interaction technology,brain-computer interface(BCI)has been widely used in medical,entertainment,military,and other fields.Imagined speech is the latest paradigm of BCI and represents the mental process of imagining a word without making a sound or making clear facial movements.Imagined speech allows patients with physical disabilities to communicate with the outside world and use smart devices through imagination.Imagined speech can meet the needs of more complex manipulative tasks considering its more intuitive features.This study proposes a classification method of imagined speech Electroencephalogram(EEG)signals with discrete wavelet transform(DWT)and support vector machine(SVM).An open dataset that consists of 15 subjects imagining speaking six different words,namely,up,down,left,right,backward,and forward,is used.The objective is to improve the classification accuracy of imagined speech BCI system.The features of EEG signals are first extracted by DWT,and the imagined words are clas-sified by SVM with the above features.Experimental results show that the proposed method achieves an average accuracy of 61.69%,which is better than those of existing methods for classifying imagined speech tasks.展开更多
Teaching and learning a language are influenced by an imagined community involving interaction among members in possible worlds.From an empirical standpoint,relatively little is known about how Chinese language lectur...Teaching and learning a language are influenced by an imagined community involving interaction among members in possible worlds.From an empirical standpoint,relatively little is known about how Chinese language lecturers see their possible memberships to the communities wherein students from different countries participate,or how this perception affects their teaching practice and innovative pedagogies.In order to address this gap,this study explores the teaching lives of four lecturers who teach Chinese as a second language(CSL)to foreign students in China.Drawing upon a three-year longitudinal study of interview data triangulated with journal entries and classroom observation,the findings reveal that lecturers’imagined identities may transform into practical identities due to the idea of treating foreign students as legitimate foreigners but illegitimate Chinese language users,and the intensified pressures and insecurities of being a part-time lecturer.However,the combined efforts of lecturers’perseverance,knowledge and competence,institutional support,available educational resources,and positive evolution of identity may prevent lecturers’imagined communities from collapsing,and possibly facilitate a shift in identification from“struggling teacher”to“determined teacher.”Relevant implications for teaching Chinese and teacher education are discussed.展开更多
This study analyzed the difference between using a downward breaststroke kick and a horizontal breaststroke kick in a sample of world class elite swimmers.We compared average muscle activity of the gluteus maximus,qua...This study analyzed the difference between using a downward breaststroke kick and a horizontal breaststroke kick in a sample of world class elite swimmers.We compared average muscle activity of the gluteus maximus,quadriceps femoris(vastus medialis and rectus femoris),hamstring/long head of the biceps femoris,gastrocnemius medialis,rectus abdominal,and erector spinae when using the downward breaststroke kick technique.We find that when this sample of swimmers utilized the downward breaststroke kick,max speed and velocity per stroke increased,measured by 12,788 EMG samples,where the results are highly correlated to duration of the aerodynamic buoyant force in breaststroke kick technique.The increases in performance observed from measuring the world class elite swimmers is highly correlated to the duration of the kick aerodynamic buoyant force.Among this sample of elite swimmers,the longer a swimmer demonstrates a buoyant force breaststroke kick,the lower the time in a 100 breaststroke.展开更多
In the Freudian-Lacanian field,there is an important distinction between knowledge and truth.The truth,of an unconscious nature,is something that inhabits us,directs us,but that escapes us.Knowledge,in turn,is somethi...In the Freudian-Lacanian field,there is an important distinction between knowledge and truth.The truth,of an unconscious nature,is something that inhabits us,directs us,but that escapes us.Knowledge,in turn,is something to be invented,from the hole of the Real,the Unconscious truth,and the subjective experience.The relationships between playing,creating,and fantasizing;the dimension of the uncanny,fiction,and imagination in subjectivity;the invention of knowledge of oneself,derived from the pains and flavors of being who one is,are creative dimensions that inhabit the subject,permeate the analytical act,and transversalize psychoanalysis.In the practice,we listen to and witness processes of analysis that awaken an invention/reinvention of oneself,in the process of remembering,repeating,and elaborating,but also in what the transference relationship summons.Knowledge of oneself,does not guarantee a life without mishaps,sadness,and illusions,but allows the invention and recognition of knowledge and a style.The concept of Sinthome(2007),coined by Jacques Lacan,comes in the wake of the processes of self-invention and is a knowing-doing with the symptom,with the paradoxes of joyful suffering,producing,as a result,an art of saying.Therefore,in this communication,I will articulate elements of theory,practice,and psychoanalytic experience that allow us to expand knowledge of the themes of invention and imagination articulated with the concept of sinthome,their relationships with subjectivity,and the direction of psychoanalytic treatment.展开更多
This article examines Liu Cixin＇s ＂The Western Ocean＂ （Xiyan~, a story in which Liu satirizes Zheng He＇s voyages into the Indian Ocean and presents an alternate history of China from the fifteenth century to the ...This article examines Liu Cixin＇s ＂The Western Ocean＂ （Xiyan~, a story in which Liu satirizes Zheng He＇s voyages into the Indian Ocean and presents an alternate history of China from the fifteenth century to the present. The combination of China＇s imagined future and the historical memory of its past provides a political and social commentary on the Chinese narrative of ＂peaceful rise.＂ ＂The Western Ocean＂ is also a good example of how the subgenre of alternate history can become a tool for Chinese writers to tactfully express their concerns and criticism of contemporary world politics while strict restrictions on the media and internet, as well as self-censorship among PtLC intellectuals in general, still prevail in the country.展开更多
ChatGPT and similar large language models(LLMs)have rapidly caught the sci-entific and popular imagination,inviting reflections on their potential and risk for science(Grimaldi&Ehrler,2023;Nature,2023;Thorp,2023;v...ChatGPT and similar large language models(LLMs)have rapidly caught the sci-entific and popular imagination,inviting reflections on their potential and risk for science(Grimaldi&Ehrler,2023;Nature,2023;Thorp,2023;van Dis et al.,2023).展开更多
AIM:To assess metrics of diffusion tensor imagining(DTI)in evaluating microstructural abnormalities of horizontal extraocular muscles(EOM)in esotropia.METHODS:Six adult concomitant esotropia patients,5 unilateral abdu...AIM:To assess metrics of diffusion tensor imagining(DTI)in evaluating microstructural abnormalities of horizontal extraocular muscles(EOM)in esotropia.METHODS:Six adult concomitant esotropia patients,5 unilateral abducent paralysis patients and 2 healthy volunteers were enrolled.Conventional magnetic resonance imaging(MRI)and DTI were performed on all subjects using 3T MR scanner.Fractional anisotropy(FA),mean diffusivity(MD),axial diffusivity(AD),and radial diffusivity(RD)of medial and lateral rectus muscles were measured and compared between patients group and control group.RESULTS:Medial rectus MD and RD within the adducted eye of concomitant patients was significantly greater than that in unilateral abducent paralysis patients(0.259×10-2 mm^(2)/s vs 0.207×10-2 mm^(2)/s,P=0.014;0.182×10-2 mm^(2)/s vs 0.152×10-2 mm^(2)/s,P=0.017).Both strabismus patients showed a significantly decreased MD and AD than that obtained in normal controls for lateral rectus muscles(P<0.05).Medial rectus MD of the adducted eye in concomitant strabismus patients was significantly decreased than that in healthy controls(0.259×10-2 mm^(2)/s vs 0.266×10-2 mm^(2)/s,P=0.010).Lateral rectus AD of the adducted eye in concomitant strabismus patients was significantly decreased as compared with that in healthy controls(0.515×10-2 mm^(2)/s vs 0.593×10-2 mm^(2)/s,P=0.013).No statistically significant differences were present between the adducted and fixating eyes in concomitant strabismus patients.CONCLUSION:DTI represents a feasible technique to assess tissue characteristics of EOM.The effects of eye position changes on DTI parameters are subtle.Decreased MD and RD could be evidence for remodeling of the medial rectus muscle contracture.Lower medial and lateral recuts MD of concomitant esotropia patients indicates a thinner fibrous structure of the EOM.Lower MD and AD should be general character of esotropia.展开更多
Cities are co-built spaces by natural environment and human activities, and their formation and development rely on human activities. City spaces, according to Henri Lefebvre, are not only tangible and perceivable, bu...Cities are co-built spaces by natural environment and human activities, and their formation and development rely on human activities. City spaces, according to Henri Lefebvre, are not only tangible and perceivable, but also heterogeneous, which can be reconstructed. London, as the most ancient city and the political, economic and cultural center of Britain, was depicted in verses of different periods, within which its landscape and city spaces took on different visions and had been endowed with various meanings. The heterogeneous London city spaces reveal historical changes, and, at the same time, reflect how the literary writers understand, perceive and expect from the city. From the Renaissance verses, readers can not only see what the London city was like in realistic writings, but also the imagined spaces based on the reconstructed history, which are the embodiment of the writers’ geopolitical imagination.展开更多
Meet the Chinese Characters Chinese characters have played a pivotal role in connecting changes over China’s 5,000-year long history.They portray the extraordinary imaginations and romantic feelings,as well as pass o...Meet the Chinese Characters Chinese characters have played a pivotal role in connecting changes over China’s 5,000-year long history.They portray the extraordinary imaginations and romantic feelings,as well as pass on the timeless wisdom and life philosophy of the Chinese people.The documentary series tells the stories behind Chinese characters in five-minute short video episodes.Starting with the form and meaning of the characters,each episode combines scenes,interviews,and animation simulation to vividly showcase the cultural origins of the characters created so long ago and bring them back to life.展开更多
研究目的:为了实现土地整理中土方量计算的准确、快速、方便和自动化。研究方法:应用数字高程模型(DEM)原理,结合土方量计算的方格网法,借助ERDAS IM AGINE遥感图像处理软件,建立土方量计算模型。研究结果:以江西省九江县港口街镇土地...研究目的:为了实现土地整理中土方量计算的准确、快速、方便和自动化。研究方法:应用数字高程模型(DEM)原理,结合土方量计算的方格网法,借助ERDAS IM AGINE遥感图像处理软件,建立土方量计算模型。研究结果:以江西省九江县港口街镇土地整理项目为例介绍了计算的详细步骤,计算结果比专家论证批复的项目设计土方量大4.4%。研究结论:该方法计算土方量是可行的,能够实现土方量的计算机辅助计算。展开更多
基金supported in part by the Fundamental Research Funds for the Central Universities(xcxjh20210104).
文摘With the development of human-computer interaction technology,brain-computer interface(BCI)has been widely used in medical,entertainment,military,and other fields.Imagined speech is the latest paradigm of BCI and represents the mental process of imagining a word without making a sound or making clear facial movements.Imagined speech allows patients with physical disabilities to communicate with the outside world and use smart devices through imagination.Imagined speech can meet the needs of more complex manipulative tasks considering its more intuitive features.This study proposes a classification method of imagined speech Electroencephalogram(EEG)signals with discrete wavelet transform(DWT)and support vector machine(SVM).An open dataset that consists of 15 subjects imagining speaking six different words,namely,up,down,left,right,backward,and forward,is used.The objective is to improve the classification accuracy of imagined speech BCI system.The features of EEG signals are first extracted by DWT,and the imagined words are clas-sified by SVM with the above features.Experimental results show that the proposed method achieves an average accuracy of 61.69%,which is better than those of existing methods for classifying imagined speech tasks.
文摘Teaching and learning a language are influenced by an imagined community involving interaction among members in possible worlds.From an empirical standpoint,relatively little is known about how Chinese language lecturers see their possible memberships to the communities wherein students from different countries participate,or how this perception affects their teaching practice and innovative pedagogies.In order to address this gap,this study explores the teaching lives of four lecturers who teach Chinese as a second language(CSL)to foreign students in China.Drawing upon a three-year longitudinal study of interview data triangulated with journal entries and classroom observation,the findings reveal that lecturers’imagined identities may transform into practical identities due to the idea of treating foreign students as legitimate foreigners but illegitimate Chinese language users,and the intensified pressures and insecurities of being a part-time lecturer.However,the combined efforts of lecturers’perseverance,knowledge and competence,institutional support,available educational resources,and positive evolution of identity may prevent lecturers’imagined communities from collapsing,and possibly facilitate a shift in identification from“struggling teacher”to“determined teacher.”Relevant implications for teaching Chinese and teacher education are discussed.
文摘This study analyzed the difference between using a downward breaststroke kick and a horizontal breaststroke kick in a sample of world class elite swimmers.We compared average muscle activity of the gluteus maximus,quadriceps femoris(vastus medialis and rectus femoris),hamstring/long head of the biceps femoris,gastrocnemius medialis,rectus abdominal,and erector spinae when using the downward breaststroke kick technique.We find that when this sample of swimmers utilized the downward breaststroke kick,max speed and velocity per stroke increased,measured by 12,788 EMG samples,where the results are highly correlated to duration of the aerodynamic buoyant force in breaststroke kick technique.The increases in performance observed from measuring the world class elite swimmers is highly correlated to the duration of the kick aerodynamic buoyant force.Among this sample of elite swimmers,the longer a swimmer demonstrates a buoyant force breaststroke kick,the lower the time in a 100 breaststroke.
文摘In the Freudian-Lacanian field,there is an important distinction between knowledge and truth.The truth,of an unconscious nature,is something that inhabits us,directs us,but that escapes us.Knowledge,in turn,is something to be invented,from the hole of the Real,the Unconscious truth,and the subjective experience.The relationships between playing,creating,and fantasizing;the dimension of the uncanny,fiction,and imagination in subjectivity;the invention of knowledge of oneself,derived from the pains and flavors of being who one is,are creative dimensions that inhabit the subject,permeate the analytical act,and transversalize psychoanalysis.In the practice,we listen to and witness processes of analysis that awaken an invention/reinvention of oneself,in the process of remembering,repeating,and elaborating,but also in what the transference relationship summons.Knowledge of oneself,does not guarantee a life without mishaps,sadness,and illusions,but allows the invention and recognition of knowledge and a style.The concept of Sinthome(2007),coined by Jacques Lacan,comes in the wake of the processes of self-invention and is a knowing-doing with the symptom,with the paradoxes of joyful suffering,producing,as a result,an art of saying.Therefore,in this communication,I will articulate elements of theory,practice,and psychoanalytic experience that allow us to expand knowledge of the themes of invention and imagination articulated with the concept of sinthome,their relationships with subjectivity,and the direction of psychoanalytic treatment.
文摘This article examines Liu Cixin＇s ＂The Western Ocean＂ （Xiyan~, a story in which Liu satirizes Zheng He＇s voyages into the Indian Ocean and presents an alternate history of China from the fifteenth century to the present. The combination of China＇s imagined future and the historical memory of its past provides a political and social commentary on the Chinese narrative of ＂peaceful rise.＂ ＂The Western Ocean＂ is also a good example of how the subgenre of alternate history can become a tool for Chinese writers to tactfully express their concerns and criticism of contemporary world politics while strict restrictions on the media and internet, as well as self-censorship among PtLC intellectuals in general, still prevail in the country.
文摘ChatGPT and similar large language models(LLMs)have rapidly caught the sci-entific and popular imagination,inviting reflections on their potential and risk for science(Grimaldi&Ehrler,2023;Nature,2023;Thorp,2023;van Dis et al.,2023).
文摘AIM:To assess metrics of diffusion tensor imagining(DTI)in evaluating microstructural abnormalities of horizontal extraocular muscles(EOM)in esotropia.METHODS:Six adult concomitant esotropia patients,5 unilateral abducent paralysis patients and 2 healthy volunteers were enrolled.Conventional magnetic resonance imaging(MRI)and DTI were performed on all subjects using 3T MR scanner.Fractional anisotropy(FA),mean diffusivity(MD),axial diffusivity(AD),and radial diffusivity(RD)of medial and lateral rectus muscles were measured and compared between patients group and control group.RESULTS:Medial rectus MD and RD within the adducted eye of concomitant patients was significantly greater than that in unilateral abducent paralysis patients(0.259×10-2 mm^(2)/s vs 0.207×10-2 mm^(2)/s,P=0.014;0.182×10-2 mm^(2)/s vs 0.152×10-2 mm^(2)/s,P=0.017).Both strabismus patients showed a significantly decreased MD and AD than that obtained in normal controls for lateral rectus muscles(P<0.05).Medial rectus MD of the adducted eye in concomitant strabismus patients was significantly decreased than that in healthy controls(0.259×10-2 mm^(2)/s vs 0.266×10-2 mm^(2)/s,P=0.010).Lateral rectus AD of the adducted eye in concomitant strabismus patients was significantly decreased as compared with that in healthy controls(0.515×10-2 mm^(2)/s vs 0.593×10-2 mm^(2)/s,P=0.013).No statistically significant differences were present between the adducted and fixating eyes in concomitant strabismus patients.CONCLUSION:DTI represents a feasible technique to assess tissue characteristics of EOM.The effects of eye position changes on DTI parameters are subtle.Decreased MD and RD could be evidence for remodeling of the medial rectus muscle contracture.Lower medial and lateral recuts MD of concomitant esotropia patients indicates a thinner fibrous structure of the EOM.Lower MD and AD should be general character of esotropia.
文摘Cities are co-built spaces by natural environment and human activities, and their formation and development rely on human activities. City spaces, according to Henri Lefebvre, are not only tangible and perceivable, but also heterogeneous, which can be reconstructed. London, as the most ancient city and the political, economic and cultural center of Britain, was depicted in verses of different periods, within which its landscape and city spaces took on different visions and had been endowed with various meanings. The heterogeneous London city spaces reveal historical changes, and, at the same time, reflect how the literary writers understand, perceive and expect from the city. From the Renaissance verses, readers can not only see what the London city was like in realistic writings, but also the imagined spaces based on the reconstructed history, which are the embodiment of the writers’ geopolitical imagination.
文摘Meet the Chinese Characters Chinese characters have played a pivotal role in connecting changes over China’s 5,000-year long history.They portray the extraordinary imaginations and romantic feelings,as well as pass on the timeless wisdom and life philosophy of the Chinese people.The documentary series tells the stories behind Chinese characters in five-minute short video episodes.Starting with the form and meaning of the characters,each episode combines scenes,interviews,and animation simulation to vividly showcase the cultural origins of the characters created so long ago and bring them back to life.
文摘研究目的:为了实现土地整理中土方量计算的准确、快速、方便和自动化。研究方法:应用数字高程模型(DEM)原理,结合土方量计算的方格网法,借助ERDAS IM AGINE遥感图像处理软件,建立土方量计算模型。研究结果:以江西省九江县港口街镇土地整理项目为例介绍了计算的详细步骤,计算结果比专家论证批复的项目设计土方量大4.4%。研究结论:该方法计算土方量是可行的,能够实现土方量的计算机辅助计算。
