In recent years,the IT industry in China has developed rapidly and made remarkable achievements.However,there is still a big gap between China and foreign countries in the core fields of information technology,such as...In recent years,the IT industry in China has developed rapidly and made remarkable achievements.However,there is still a big gap between China and foreign countries in the core fields of information technology,such as system hardware and software platform.Currently,foreign countries have gradually raised the restrictions of information technology in China,and even added many domestic enterprises to the restricted list,which has rung the alarm to the information security of the country.Therefore,in order to break through the foreign technology blockade and find a unique way in independent software and hardware platform,it is urgent to carry out the curriculum construction and talent training mechanism on core software and hardware platform.HarmonyOS is a“future-oriented”distributed operating system developed by Huawei.It proposes a distributed concept based on the same system capability and adapts to a variety of terminal forms,and supports a variety of terminal devices such as mobile phones,watches and smart screens.Our course on HarmonyOS aims to increase the theoretical knowledge of the core independent software and hardware platform.In the course,we exploit our teaching reform experience in the course of“Mobile Application Development”,and investigate the teaching mechanism of HarmonyOS to contribute to the rapid development of information technology and ecological construction in China.展开更多
A special mobile GIS（Geographic Information System） system used for forest resources second-class inventory was developed on the basis of traditional forest resources inventory,remote sensing,GPS（Globe Positioning ...A special mobile GIS（Geographic Information System） system used for forest resources second-class inventory was developed on the basis of traditional forest resources inventory,remote sensing,GPS（Globe Positioning System） and embedded technology.Portable instrument,embedded development and the integration technology of RS（Remote Sensing）,GIS and GPS are all used in this special mobile GIS system.Further,the system composition,key techniques,and current situation of the practical application in China were analyzed in the study.The results are important for applying modern high-tech for the planning and design of digital forest resources to improve the precision and efficiency of inventory and reduce the labor cost and financial investment.展开更多
With the rise of smart phones,mobile applications have been widely used in daily life.However,the relationship between individuals’mobile application usage and cities’economic development has yet to be investigated....With the rise of smart phones,mobile applications have been widely used in daily life.However,the relationship between individuals’mobile application usage and cities’economic development has yet to be investigated.To study this question,this work utilizes a dataset containing users’history of mobile application usage records(MAURs)and investigates how MAURs are related to Chinese cities’economic development.Our analysis shows the cities’GDP and number of MAURs are highly correlated,and at the individual level,people in wealthier cities(higher GDP per capita)tend to have more active mobile application usage(MAURs per capita).The results also demonstrate the relevance between cities’GDP and MAURs varies significantly among different demographic groups,with male users’relevance consistently higher than female users’and working-age people’s relevance higher than other age groups.A boosted tree regression model is then applied to predict cities’GDP with MAURs and proves to achieve high goodness-of-fit(over 0.8 R-square)and good prediction accuracy,especially for the economically developed and populous regions in China.To the best of our knowledge,this is the first time that the relationship between MAURs and cities’economic development is revealed,which contributes to novel knowledge discovery for regionalization and urban development.展开更多
Recently,a specific interest is being taken in the development of mobile application(app)via Model-Based User Interface Development(MBUID)approach.MBUID allows the generation of mobile apps in the target platform(s)fr...Recently,a specific interest is being taken in the development of mobile application(app)via Model-Based User Interface Development(MBUID)approach.MBUID allows the generation of mobile apps in the target platform(s)from conceptual models.As such it simplified the development process of mobile app.However,the interest is only focused on the functional aspects of the mobile app while neglecting the non-functional aspects,such as usability.The latter is largely considered as the main factor leading to the success or failure of any software system.This paper aims at addressing non-functional aspects of mobile apps generated using MBUID approach.As such,we propose a usability-driven approach for the development of mobile apps.The main stages of the proposed approach are defined in a generic way so that they can be integrated with any MBUID method.A case study is presented,in the paper,with the aim of illustrating the feasibility of this approach.展开更多
The great evolution of the mobile market during the last years caused some fragmentation of the mobile platforms namely through the existence of different programming languages and software development tools for each ...The great evolution of the mobile market during the last years caused some fragmentation of the mobile platforms namely through the existence of different programming languages and software development tools for each platform. This fact can be an obstacle and increases the development complexity and costs when we want to develop mobile applications for multiple platforms. The XIS-Mobile domain specific language (defined as a UML profile) and its MDD-based framework address this problem by proposing platform-independent models to describe mobile applications and from them automatically generate the application’s source code. Many issues arose during an iterative process of evaluation which originated changes and the evolution of XIS-Mobile. This paper presents the results of the evaluation of XIS-Mobile (both the language and the companion framework) obtained through the implementation of a case study and by conducting a user session, and discusses its benefits and challenges.展开更多
This paper proposes that the business model of mobile Internet services is shifting from a walled garden to an open one.The service development model relies more on open Application Programme Interface(API);and the on...This paper proposes that the business model of mobile Internet services is shifting from a walled garden to an open one.The service development model relies more on open Application Programme Interface(API);and the online application software store is becoming an important platform for service delivery.The terminal platform has been the commanding point of the layout and competition of the mobile Inernet in the world.Based on the smart terminal,the competition for platform system from the hardware platform to the operation system,the middleware and the applications platform have been in shape globally.The competition in the terminal platform of mobile Internet is moving from close to open,from uni-controlled by one company to open and cooperated by the whole industry.China should forge a terminal platform system and the ecosystem for the mobile Internet industry,and seek to achieve an overall breakthrough in the whole value chain of the industry based on the huge mobile user market and the productivity of the terminal.The breakthrough should start from the application software,stepping from the top to the bottom platform,to extend the industry chain.展开更多
With the increasing demand for VAS from the subscribers,mobile operators are making efforts to create more services to promote the continuous development of the non-voice service application.The following three mobile...With the increasing demand for VAS from the subscribers,mobile operators are making efforts to create more services to promote the continuous development of the non-voice service application.The following three mobile VASes are becoming the development focus of operators.展开更多
Mobile Application Development is a well-known undergraduate specialized course majoring in Computer Science and Software Engineering.Since it is a rapid developing technique and requires extensive project samples to ...Mobile Application Development is a well-known undergraduate specialized course majoring in Computer Science and Software Engineering.Since it is a rapid developing technique and requires extensive project samples to help understand,current teaching mechanism has still limitations in rare real project examples,outdated course contents,and lack of automatic assessment platforms.In order to improve the teaching effects and cultivate students’practical ability,we employ this teaching reform with industrial projects,double instructors,and automatic assessment platform to allow students participating in every course process.We aim to improve students’practical and collaboration ability during conducting the project spontaneously,and cultivate their awareness of self-learning and lifelong learning.Our classroom feedback has demonstrated that this teaching reform is effective on improving students’practical abilities,learning initiatives and comprehensive qualities.展开更多
With the enforcement of 3G network capabilities in the future,the mobile Internet will greatly change the service modes of traditional Internet,rather than simply combine the Internet with mobile networks.The developm...With the enforcement of 3G network capabilities in the future,the mobile Internet will greatly change the service modes of traditional Internet,rather than simply combine the Internet with mobile networks.The development of new technologies such as Mashup and mobile widgets will enable better service for users and new business models,bringing benefits for the industrial chain members including operators,vendors,Content Providers/Service Providers(CPs/SPs)and Internet application providers.The mobile Internet and the traditional Internet not only compete for contents and services,but also cooperate with each other;and the mobile Internet services should focus on mobile applications to avoid the homogenization with traditional Internet service.展开更多
Mobile TV is growing popular worldwide.It puts new hardware requirements on the handset,requiring a tuner,a demodulator and a decoder to receive and process signals that challenge the power consumption and size of han...Mobile TV is growing popular worldwide.It puts new hardware requirements on the handset,requiring a tuner,a demodulator and a decoder to receive and process signals that challenge the power consumption and size of handsets.These special terminal chips can solve these problems and stand as a prerequisite for broadcasting TV to mobile phones.The commercial mobile TV handsets have been brought to the market,which use the integrated single-chip,the dual/multi mode chip,or the TV receiver integrated in an SD card.These small chips with low power consumption will help popularize mobile TV services.展开更多
In this paper, we conduct research on the new mobile development paradigm based on the HTML5 and core database storage optimization techniques. With the development of mobile Internet technology and the popularity of ...In this paper, we conduct research on the new mobile development paradigm based on the HTML5 and core database storage optimization techniques. With the development of mobile Internet technology and the popularity of smart mobile devices, mobile Internet is becoming more and more obvious in the importance of life, mobile application development is also becoming more and more important. The current mainstream development include the mode of traditional native application development, Web application development based on it, and based on the mixed mode of third-party framework development. The practice of software engineering, points out that productivity of the software breakthrough is the introduction of basic software reuse. Object-oriented framework is an important research content in modern software engineering. Under this basis, we propose the related optimization countermeasures for systematic modifi cation that is meaningful.展开更多
With the continuous development of the Internet,e-commerce and popularization of financial payment means,traditional constraints have become unfavorable factors in our country's economic development.Meanwhile,the ...With the continuous development of the Internet,e-commerce and popularization of financial payment means,traditional constraints have become unfavorable factors in our country's economic development.Meanwhile,the rapid development of mobile communications provides solid basis for the development of mobile payment business.In this case,the mobile payment industry naturally will become an industry to deal with all walks of life and promote the development of logistics,manufacturing,service industries,public information and all kinds of innovative mobile technology.Then a branch of financial payment will naturally be formed.As mobile technology continuously improves cost savings and the efficiency of payment,the development of the mobile payment industry began to be analyzed.In this thesis,for study Chinese mobile payment,a detailed analysis of the development status will be investigated,the problems of development of China's mobile payment will be revealed and the strategic development of the final payment will be put forward.They all have profound significance.展开更多
Mobile 5G communication technology is now a very mature mobile communication system. Based on practice, this paper briefly summarizes 5G communication, analyzes the overall trend of 5G communication and understands so...Mobile 5G communication technology is now a very mature mobile communication system. Based on practice, this paper briefly summarizes 5G communication, analyzes the overall trend of 5G communication and understands some key technologies in the development of 5G mobile communication, so as to speed up its process in China, make it put into operation earlier and promote the communication between the people.展开更多
This paper first analyzes the development status of mobile phone advertisement in China,and then introduces the features and advantages of mobile phone advertisement,and finally it analyzes the development trend of mo...This paper first analyzes the development status of mobile phone advertisement in China,and then introduces the features and advantages of mobile phone advertisement,and finally it analyzes the development trend of mobile phone advertisement in new era.展开更多
Background:With the proliferation of smartphones,adolescent mobile phone dependency has intensified,potentially precipitating academic burnout and other adverse outcomes among students.Contemporary study mostly examin...Background:With the proliferation of smartphones,adolescent mobile phone dependency has intensified,potentially precipitating academic burnout and other adverse outcomes among students.Contemporary study mostly examines college populations,resulting in a lack of exploration on the internal mechanisms connecting mobile phone dependency to academic burnout.In addition to analysing the chain-mediated effects of sleep quality and cognitive flexibility,this study sought to provide theoretical insights for prevention by applying the Conservation of Resources theory to examine the relationship between academic burnout and mobile phone dependency among middle and high school students.Methods:A cluster convenience sampling approach was adopted.Data were collected from 811 middle and high school students in Tianjin,China,using a paper-based questionnaire battery comprising the Mobile Phone Addiction Index,the Pittsburgh Sleep Quality Index,the Cognitive Flexibility Scale,and the Adolescent Academic Burnout Scale.Descriptive statistics and correlation analyses were conducted using SPSS 25.0.Chain mediation effects were examined via the PROCESS macro,with significance assessed using bias-corrected bootstrap 95%confidence intervals.Results:A statistically significant positive link exists between mobile phone dependency and academic burnout among middle and high school students(r=0.575,p<0.001).Dependence on mobile phones had a substantial direct impact on academic burnout(β=0.303,p<0.001).Chain mediation analysis revealed that mobile phone dependency had a substantial direct impact on academic burnout(β=0.303,p<0.001).Sleep quality and cognitive flexibility mediated the link between mobile phone dependency and academic burnout.These indirect pathways represent 44.18%of the total effect.Conclusions:Mobile phone dependency contributes to academic burnout amongmiddle and high school students,mediated sequentially by sleep quality and cognitive flexibility.These findings suggest a potential intervention strategy to mitigate academic burnout by targeting excessive mobile phone use,enhancing sleep hygiene,and implementing cognitive flexibility training.展开更多
The rapid spread of information and communication technologies has precipitated the emergence of a novel e-commerce paradigm:mobile ordering.In conjunction with conventional online shopping,this development has signif...The rapid spread of information and communication technologies has precipitated the emergence of a novel e-commerce paradigm:mobile ordering.In conjunction with conventional online shopping,this development has significantly altered the travel pat-terns of urban residents and has the potential to either mitigate or exacerbate disparities in the distribution of amenities and resources.Behavioural research has concentrated on online shopping;there is a dearth of studies on the differences between online shopping and mobile ordering,two distinct types of e-commerce.Using the setting of the Wuhan Metropolitan Development Area in 2022,this study uses distribution probability indices,exploratory spatial data analysis,and a quantile regression model to investigate the spatial distribu-tion patterns of online shopping and mobile ordering and to assess the differential impacts of these two types of e-commerce on travel behaviour across urban and suburban locations.The main findings are as follows:1)the likelihood of engaging in online shopping is greater in suburban regions than urban regions,whereas mobile ordering is more prevalent in central urban areas.The high-value zones for both activities are concentrated in the suburban-rural fringe,approximately 24 km from the city’s geometric centre.2)The bivariate global Moran’s I indices for the impacts of both types of e-commerce on travel distance and travel frequency demonstrate significant spatial positive correlations(0.15±0.02),with P-values that are less than 0.001,indicating spatial heterogeneity in the impacts of e-commerce on travel behaviour.3)Online shopping exerts a positive influence on both travel distance and frequency,with a weaker in-fluence in central urban than suburban areas.Mobile ordering positively affects travel frequency,with a more pronounced influence in central urban than suburban areas.Additionally,mobile ordering has a negative impact on travel distance,with the impact being margin-ally less pronounced in the central urban area than in the suburban periphery.The results offer insights into the complex interplay between e-commerce and comprehensive travel behaviours across various geographical locations.展开更多
Dear Editor,This letter investigates the system development of a multi-joint rehabilitation exoskeleton,and highlights the subject-adaptive control factors for efficient motor learning.In order to enable the natural m...Dear Editor,This letter investigates the system development of a multi-joint rehabilitation exoskeleton,and highlights the subject-adaptive control factors for efficient motor learning.In order to enable the natural mobility of the human upper extremity,we design the shoulder mechanism by arranging three rotational joints with acute angles,and adopt a serial chain structure for the fully constructed system.After the kinematics and dynamics of CASIA-EXO are modelled,the patient-in-the-loop control strategy is proposed for rehabilitation training,consisting of the intention-based trajectory planning and performance-based intervention adaptation.Finally,we conduct experiments to validate the efficacy of the control system,and further demonstrate the potential of CASIA-EXO in neurorehabilitation.Introduction:Neurological diseases are the leading cause of nontraumatic disability worldwide,and stroke is one of the most common encountered neurological injury,which is suffered by over 15 million individuals each year,and about 70%−80%of these individuals have varying degrees of functional impairments[1].In order to facilitate the motor relearning in central nervous system,post-stroke patients need to undergo long-term rehabilitation training to promote neural plasticity,thereby enhancing the recovery of motor function in activities of daily living(ADLs).Evidence in the clinical studies suggests that robot-assisted rehabilitation integrating neuroscience,biomechanics,and automation control can improve the patients’motivation for active participation while improving the treatment efficiency,therefore,be expected to become the most promising means for neurorehabilitation[2].展开更多
Telefonica Espana and ZTE Corporation,a leading global provider of telecommunications equipment and network solutions,have reached an agreement to jointly
文摘In recent years,the IT industry in China has developed rapidly and made remarkable achievements.However,there is still a big gap between China and foreign countries in the core fields of information technology,such as system hardware and software platform.Currently,foreign countries have gradually raised the restrictions of information technology in China,and even added many domestic enterprises to the restricted list,which has rung the alarm to the information security of the country.Therefore,in order to break through the foreign technology blockade and find a unique way in independent software and hardware platform,it is urgent to carry out the curriculum construction and talent training mechanism on core software and hardware platform.HarmonyOS is a“future-oriented”distributed operating system developed by Huawei.It proposes a distributed concept based on the same system capability and adapts to a variety of terminal forms,and supports a variety of terminal devices such as mobile phones,watches and smart screens.Our course on HarmonyOS aims to increase the theoretical knowledge of the core independent software and hardware platform.In the course,we exploit our teaching reform experience in the course of“Mobile Application Development”,and investigate the teaching mechanism of HarmonyOS to contribute to the rapid development of information technology and ecological construction in China.
文摘A special mobile GIS（Geographic Information System） system used for forest resources second-class inventory was developed on the basis of traditional forest resources inventory,remote sensing,GPS（Globe Positioning System） and embedded technology.Portable instrument,embedded development and the integration technology of RS（Remote Sensing）,GIS and GPS are all used in this special mobile GIS system.Further,the system composition,key techniques,and current situation of the practical application in China were analyzed in the study.The results are important for applying modern high-tech for the planning and design of digital forest resources to improve the precision and efficiency of inventory and reduce the labor cost and financial investment.
基金Wuhan University State Key Laboratory of Information Engineering in Surveying Mapping and Remote Sensing,No.21S02。
文摘With the rise of smart phones,mobile applications have been widely used in daily life.However,the relationship between individuals’mobile application usage and cities’economic development has yet to be investigated.To study this question,this work utilizes a dataset containing users’history of mobile application usage records(MAURs)and investigates how MAURs are related to Chinese cities’economic development.Our analysis shows the cities’GDP and number of MAURs are highly correlated,and at the individual level,people in wealthier cities(higher GDP per capita)tend to have more active mobile application usage(MAURs per capita).The results also demonstrate the relevance between cities’GDP and MAURs varies significantly among different demographic groups,with male users’relevance consistently higher than female users’and working-age people’s relevance higher than other age groups.A boosted tree regression model is then applied to predict cities’GDP with MAURs and proves to achieve high goodness-of-fit(over 0.8 R-square)and good prediction accuracy,especially for the economically developed and populous regions in China.To the best of our knowledge,this is the first time that the relationship between MAURs and cities’economic development is revealed,which contributes to novel knowledge discovery for regionalization and urban development.
基金supported by the Deanship of Scientific Research at Prince Sattam bin Abdulaziz University under the research project\#2021/01/17815.
文摘Recently,a specific interest is being taken in the development of mobile application(app)via Model-Based User Interface Development(MBUID)approach.MBUID allows the generation of mobile apps in the target platform(s)from conceptual models.As such it simplified the development process of mobile app.However,the interest is only focused on the functional aspects of the mobile app while neglecting the non-functional aspects,such as usability.The latter is largely considered as the main factor leading to the success or failure of any software system.This paper aims at addressing non-functional aspects of mobile apps generated using MBUID approach.As such,we propose a usability-driven approach for the development of mobile apps.The main stages of the proposed approach are defined in a generic way so that they can be integrated with any MBUID method.A case study is presented,in the paper,with the aim of illustrating the feasibility of this approach.
文摘The great evolution of the mobile market during the last years caused some fragmentation of the mobile platforms namely through the existence of different programming languages and software development tools for each platform. This fact can be an obstacle and increases the development complexity and costs when we want to develop mobile applications for multiple platforms. The XIS-Mobile domain specific language (defined as a UML profile) and its MDD-based framework address this problem by proposing platform-independent models to describe mobile applications and from them automatically generate the application’s source code. Many issues arose during an iterative process of evaluation which originated changes and the evolution of XIS-Mobile. This paper presents the results of the evaluation of XIS-Mobile (both the language and the companion framework) obtained through the implementation of a case study and by conducting a user session, and discusses its benefits and challenges.
文摘This paper proposes that the business model of mobile Internet services is shifting from a walled garden to an open one.The service development model relies more on open Application Programme Interface(API);and the online application software store is becoming an important platform for service delivery.The terminal platform has been the commanding point of the layout and competition of the mobile Inernet in the world.Based on the smart terminal,the competition for platform system from the hardware platform to the operation system,the middleware and the applications platform have been in shape globally.The competition in the terminal platform of mobile Internet is moving from close to open,from uni-controlled by one company to open and cooperated by the whole industry.China should forge a terminal platform system and the ecosystem for the mobile Internet industry,and seek to achieve an overall breakthrough in the whole value chain of the industry based on the huge mobile user market and the productivity of the terminal.The breakthrough should start from the application software,stepping from the top to the bottom platform,to extend the industry chain.
文摘With the increasing demand for VAS from the subscribers,mobile operators are making efforts to create more services to promote the continuous development of the non-voice service application.The following three mobile VASes are becoming the development focus of operators.
文摘Mobile Application Development is a well-known undergraduate specialized course majoring in Computer Science and Software Engineering.Since it is a rapid developing technique and requires extensive project samples to help understand,current teaching mechanism has still limitations in rare real project examples,outdated course contents,and lack of automatic assessment platforms.In order to improve the teaching effects and cultivate students’practical ability,we employ this teaching reform with industrial projects,double instructors,and automatic assessment platform to allow students participating in every course process.We aim to improve students’practical and collaboration ability during conducting the project spontaneously,and cultivate their awareness of self-learning and lifelong learning.Our classroom feedback has demonstrated that this teaching reform is effective on improving students’practical abilities,learning initiatives and comprehensive qualities.
文摘With the enforcement of 3G network capabilities in the future,the mobile Internet will greatly change the service modes of traditional Internet,rather than simply combine the Internet with mobile networks.The development of new technologies such as Mashup and mobile widgets will enable better service for users and new business models,bringing benefits for the industrial chain members including operators,vendors,Content Providers/Service Providers(CPs/SPs)and Internet application providers.The mobile Internet and the traditional Internet not only compete for contents and services,but also cooperate with each other;and the mobile Internet services should focus on mobile applications to avoid the homogenization with traditional Internet service.
文摘Mobile TV is growing popular worldwide.It puts new hardware requirements on the handset,requiring a tuner,a demodulator and a decoder to receive and process signals that challenge the power consumption and size of handsets.These special terminal chips can solve these problems and stand as a prerequisite for broadcasting TV to mobile phones.The commercial mobile TV handsets have been brought to the market,which use the integrated single-chip,the dual/multi mode chip,or the TV receiver integrated in an SD card.These small chips with low power consumption will help popularize mobile TV services.
文摘In this paper, we conduct research on the new mobile development paradigm based on the HTML5 and core database storage optimization techniques. With the development of mobile Internet technology and the popularity of smart mobile devices, mobile Internet is becoming more and more obvious in the importance of life, mobile application development is also becoming more and more important. The current mainstream development include the mode of traditional native application development, Web application development based on it, and based on the mixed mode of third-party framework development. The practice of software engineering, points out that productivity of the software breakthrough is the introduction of basic software reuse. Object-oriented framework is an important research content in modern software engineering. Under this basis, we propose the related optimization countermeasures for systematic modifi cation that is meaningful.
文摘With the continuous development of the Internet,e-commerce and popularization of financial payment means,traditional constraints have become unfavorable factors in our country's economic development.Meanwhile,the rapid development of mobile communications provides solid basis for the development of mobile payment business.In this case,the mobile payment industry naturally will become an industry to deal with all walks of life and promote the development of logistics,manufacturing,service industries,public information and all kinds of innovative mobile technology.Then a branch of financial payment will naturally be formed.As mobile technology continuously improves cost savings and the efficiency of payment,the development of the mobile payment industry began to be analyzed.In this thesis,for study Chinese mobile payment,a detailed analysis of the development status will be investigated,the problems of development of China's mobile payment will be revealed and the strategic development of the final payment will be put forward.They all have profound significance.
文摘Mobile 5G communication technology is now a very mature mobile communication system. Based on practice, this paper briefly summarizes 5G communication, analyzes the overall trend of 5G communication and understands some key technologies in the development of 5G mobile communication, so as to speed up its process in China, make it put into operation earlier and promote the communication between the people.
文摘This paper first analyzes the development status of mobile phone advertisement in China,and then introduces the features and advantages of mobile phone advertisement,and finally it analyzes the development trend of mobile phone advertisement in new era.
基金supported by the Philosophy and Social Sciences Planning Foundation of Tianjin(Grant No.TJJX22-006).
文摘Background:With the proliferation of smartphones,adolescent mobile phone dependency has intensified,potentially precipitating academic burnout and other adverse outcomes among students.Contemporary study mostly examines college populations,resulting in a lack of exploration on the internal mechanisms connecting mobile phone dependency to academic burnout.In addition to analysing the chain-mediated effects of sleep quality and cognitive flexibility,this study sought to provide theoretical insights for prevention by applying the Conservation of Resources theory to examine the relationship between academic burnout and mobile phone dependency among middle and high school students.Methods:A cluster convenience sampling approach was adopted.Data were collected from 811 middle and high school students in Tianjin,China,using a paper-based questionnaire battery comprising the Mobile Phone Addiction Index,the Pittsburgh Sleep Quality Index,the Cognitive Flexibility Scale,and the Adolescent Academic Burnout Scale.Descriptive statistics and correlation analyses were conducted using SPSS 25.0.Chain mediation effects were examined via the PROCESS macro,with significance assessed using bias-corrected bootstrap 95%confidence intervals.Results:A statistically significant positive link exists between mobile phone dependency and academic burnout among middle and high school students(r=0.575,p<0.001).Dependence on mobile phones had a substantial direct impact on academic burnout(β=0.303,p<0.001).Chain mediation analysis revealed that mobile phone dependency had a substantial direct impact on academic burnout(β=0.303,p<0.001).Sleep quality and cognitive flexibility mediated the link between mobile phone dependency and academic burnout.These indirect pathways represent 44.18%of the total effect.Conclusions:Mobile phone dependency contributes to academic burnout amongmiddle and high school students,mediated sequentially by sleep quality and cognitive flexibility.These findings suggest a potential intervention strategy to mitigate academic burnout by targeting excessive mobile phone use,enhancing sleep hygiene,and implementing cognitive flexibility training.
基金Under the auspices of National Natural Science Foundation of China(No.52278075)the Shenzhen Philosophy and Social Science Planning Program(No.SZ2024B009)。
文摘The rapid spread of information and communication technologies has precipitated the emergence of a novel e-commerce paradigm:mobile ordering.In conjunction with conventional online shopping,this development has significantly altered the travel pat-terns of urban residents and has the potential to either mitigate or exacerbate disparities in the distribution of amenities and resources.Behavioural research has concentrated on online shopping;there is a dearth of studies on the differences between online shopping and mobile ordering,two distinct types of e-commerce.Using the setting of the Wuhan Metropolitan Development Area in 2022,this study uses distribution probability indices,exploratory spatial data analysis,and a quantile regression model to investigate the spatial distribu-tion patterns of online shopping and mobile ordering and to assess the differential impacts of these two types of e-commerce on travel behaviour across urban and suburban locations.The main findings are as follows:1)the likelihood of engaging in online shopping is greater in suburban regions than urban regions,whereas mobile ordering is more prevalent in central urban areas.The high-value zones for both activities are concentrated in the suburban-rural fringe,approximately 24 km from the city’s geometric centre.2)The bivariate global Moran’s I indices for the impacts of both types of e-commerce on travel distance and travel frequency demonstrate significant spatial positive correlations(0.15±0.02),with P-values that are less than 0.001,indicating spatial heterogeneity in the impacts of e-commerce on travel behaviour.3)Online shopping exerts a positive influence on both travel distance and frequency,with a weaker in-fluence in central urban than suburban areas.Mobile ordering positively affects travel frequency,with a more pronounced influence in central urban than suburban areas.Additionally,mobile ordering has a negative impact on travel distance,with the impact being margin-ally less pronounced in the central urban area than in the suburban periphery.The results offer insights into the complex interplay between e-commerce and comprehensive travel behaviours across various geographical locations.
基金supported in part by the National Key Research and Development Program of China(2022YFC3601200)the National Natural Science Foundation of China(62203441,U21A20479)+1 种基金the Beijing Natural Science Foundation(L232005)the Inner Mongolia Autonomous Region Science and Technology Plan(2023YFDZ0042).
文摘Dear Editor,This letter investigates the system development of a multi-joint rehabilitation exoskeleton,and highlights the subject-adaptive control factors for efficient motor learning.In order to enable the natural mobility of the human upper extremity,we design the shoulder mechanism by arranging three rotational joints with acute angles,and adopt a serial chain structure for the fully constructed system.After the kinematics and dynamics of CASIA-EXO are modelled,the patient-in-the-loop control strategy is proposed for rehabilitation training,consisting of the intention-based trajectory planning and performance-based intervention adaptation.Finally,we conduct experiments to validate the efficacy of the control system,and further demonstrate the potential of CASIA-EXO in neurorehabilitation.Introduction:Neurological diseases are the leading cause of nontraumatic disability worldwide,and stroke is one of the most common encountered neurological injury,which is suffered by over 15 million individuals each year,and about 70%−80%of these individuals have varying degrees of functional impairments[1].In order to facilitate the motor relearning in central nervous system,post-stroke patients need to undergo long-term rehabilitation training to promote neural plasticity,thereby enhancing the recovery of motor function in activities of daily living(ADLs).Evidence in the clinical studies suggests that robot-assisted rehabilitation integrating neuroscience,biomechanics,and automation control can improve the patients’motivation for active participation while improving the treatment efficiency,therefore,be expected to become the most promising means for neurorehabilitation[2].
文摘Telefonica Espana and ZTE Corporation,a leading global provider of telecommunications equipment and network solutions,have reached an agreement to jointly
