At 23:18 Beijing time on January 5,a LM-3B carrier rocket lifted off from the Xichang Satellite Launch Center,sending a communication technology test satellite into its preset orbit.This successful launch was a good s...At 23:18 Beijing time on January 5,a LM-3B carrier rocket lifted off from the Xichang Satellite Launch Center,sending a communication technology test satellite into its preset orbit.This successful launch was a good start for China’s launch missions in 2017.The Communications Technology Test Satellite 2 was developed by the Shanghai Academy of Spaceflight Technology.It is a next-generation telecom-展开更多
With the acceleration of the intelligent transformation of power systems,the requirements for communication technology are increasingly stringent.The application of 5G mobile communication technology in power communic...With the acceleration of the intelligent transformation of power systems,the requirements for communication technology are increasingly stringent.The application of 5G mobile communication technology in power communication is analyzed.In this study,5G technology features,application principles,and practical strategies are discussed,and methods such as network slicing,customized deployment,edge computing collaborative application,communication equipment integration and upgrading,and multi-technology collaboration and complementation are proposed.It aims to effectively improve the efficiency,reliability,and security of power communication,solve the problem that traditional communication technology is difficult to meet the diversified needs of power business,and achieve the effect of optimizing the power communication network and supporting the intelligent development of the power system.展开更多
In order to forecast promising technologies in the field of next generation mobile communication, various patent indicators were analyzed such as citation per patent, patent family information, patent share, increase ...In order to forecast promising technologies in the field of next generation mobile communication, various patent indicators were analyzed such as citation per patent, patent family information, patent share, increase rate, and patent activity. These indicators were quantified into several indexes and then integrated into an evaluation score to provide promising technologies. As a result of the suggested patent analysis, four technologies out of twenty two in details classification were selected, which showed outstanding technology competitiveness, high patent share and increasing rates as well as high recent-patent-ratios and triad-patent-family-ratios. Each of the selected technologies scored more than 10 points in total, and the following four technologies were suggested as promising ones in the field of next generation mobile communication: 1) 3GPP based mobile communication, 2) beyond 4G mobile communication, 3) IEEE 802.16 based mobile communication, which are in medium classification of broadband mobile communication system, and 4) testing/certification system of mobile communication, which is in medium classification of mobile communication testing/certification system.展开更多
The rapid development of communication technology and computer networks has brought a lot of convenience to production and life,but it also increases the security problem.Information security has become one of the sev...The rapid development of communication technology and computer networks has brought a lot of convenience to production and life,but it also increases the security problem.Information security has become one of the severe challenges faced by people in the digital age.Currently,the security problems facing the field of communication technology and computer networks in China mainly include the evolution of offensive technology,the risk of large-scale data transmission,the potential vulnerabilities introduced by emerging technology,and the dilemma of user identity verification.This paper analyzes the frontier challenges of communication technology and computer network security,and puts forward corresponding solutions,hoping to provide ideas for coping with the security challenges of communication technology and computer networks.展开更多
The mainstream approaches to green networking are discussed first from the view of engineering,including resource consolidation,server virtualization,selective connectedness,and proportional computing.A brief introduc...The mainstream approaches to green networking are discussed first from the view of engineering,including resource consolidation,server virtualization,selective connectedness,and proportional computing.A brief introduction to network virtualization techniques is given then and a virtual node embedding approach is provided.Finally,three kinds of enhanced green networking schemes by network virtualization are proposed,that is enhancement to sever virtualization,resource consolidation and Adaptive Link Rate(ALR).Examples are included to show the virtue of network virtualization to green networking in terms of energy efficient communications.展开更多
Phosphor bronze is a commonly used elastic copper alloy,widely applied in electronic connectors and terminals[1-4].With the rapid development of 5 G mobile communication technology and the new energy vehicle industry,...Phosphor bronze is a commonly used elastic copper alloy,widely applied in electronic connectors and terminals[1-4].With the rapid development of 5 G mobile communication technology and the new energy vehicle industry,the size requirements for connectors have been reduced,while the demand for strength has gradually increased[5].This requires the alloy to possess higher strength and better deformability.展开更多
Space-Terrestrial Integrated 6G Network:Architecture,Networking,and Transmission Technologies With the large-scale deployment of satellite constellations such as Starlink and the rapid advancement of technologies incl...Space-Terrestrial Integrated 6G Network:Architecture,Networking,and Transmission Technologies With the large-scale deployment of satellite constellations such as Starlink and the rapid advancement of technologies including artificial intelligence(AI)and non-terrestrial networks(NTNs),the integration of high,medium,and low Earth orbit satellite networks with terrestrial networks has become a critical direction for future communication technologies.展开更多
The advancement of 6G wireless communication technology has facilitated the integration of Vehicular Ad-hoc Networks(VANETs).However,the messages transmitted over the public channel in the open and dynamic VANETs are ...The advancement of 6G wireless communication technology has facilitated the integration of Vehicular Ad-hoc Networks(VANETs).However,the messages transmitted over the public channel in the open and dynamic VANETs are vulnerable to malicious attacks.Although numerous researchers have proposed authentication schemes to enhance the security of Vehicle-to-Vehicle(V2V)communication,most existing methodologies face two significant challenges:(1)the majority of the schemes are not lightweight enough to support realtime message interaction among vehicles;(2)the sensitive information like identity and position is at risk of being compromised.To tackle these issues,we propose a lightweight dual authentication protocol for V2V communication based on Physical Unclonable Function(PUF).The proposed scheme accomplishes dual authentication between vehicles by the combination of Zero-Knowledge Proof(ZKP)and MASK function.The security analysis proves that our scheme provides both anonymous authentication and information unlinkability.Additionally,the performance analysis demonstrates that the computation overhead of our scheme is approximately reduced 23.4% compared to the state-of-the-art schemes.The practical simulation conducted in a 6G network environment demonstrates the feasibility of 6G-based VANETs and their potential for future advancements.展开更多
How to realize intelligent and fast bed calls has been a key concern of hospitals.The traditional wired bed call system is not only costly but also less efficient.In this paper,research on bed call systems based on AT...How to realize intelligent and fast bed calls has been a key concern of hospitals.The traditional wired bed call system is not only costly but also less efficient.In this paper,research on bed call systems based on AT89C52 microcontroller is carried out.The nurse-side host(AT89C52)and the bedside slave(AT89C52)communicate over long distances using wireless communication technology.The system transmits signals,including Liquid Crystal Display(LCD),voice announcements,and beeping alarms,to indicate the bed number requiring assistance.This allows the nurse to respond promptly.The system supports real-time updates,where calls and processing occur independently,ensuring efficiency.It is not only cost-effective but also enables a rapid and intelligent call-and-response process.展开更多
Considering the undeniable importance of the environment in people’s lives,this study investigates the combined effects of information and communication technology(ICT)and foreign direct investment(FDI)on achieving e...Considering the undeniable importance of the environment in people’s lives,this study investigates the combined effects of information and communication technology(ICT)and foreign direct investment(FDI)on achieving environmental sustainability.With increasing carbon emissions and their destructive environmental,socioeconomic,and political consequences,the main research question is:what strategies have governments,especially oil-exporting countries,previously used to reduce pollution,and what policies do they plan to implement in the future?Among the policies undertaken by OPEC member countries,has FDI and the development of ICT been effective in preventing environmental damage?To address this,this study uses renewable energy consumption,ICT intensity,FDI,and urbanization as explanatory variables,with carbon dioxide(CO_(2))emissions as the dependent variable.The analysis focuses on OPEC members from 2000 to 2020 using a panel vector autoregression(PVAR)method.The results indicate that a shock to FDI,labor force,urban population,and renewable energy consumption reduces CO_(2)emissions while a shock to gross capital formation increases them.The impact of an ICT shock on CO_(2)emissions is negligible.Variance analysis further shows that urban population,labor force,and FDI have the greatest influence on CO_(2)behavior,therefore,it is necessary to attract more FDI to help reduce CO_(2)in OPEC members.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
The user signal quality as well as the performance of transmission link experiences severe loss due to wireless channel fading and propagation loss in high-speed railway scenario.To improve the quality at the receivin...The user signal quality as well as the performance of transmission link experiences severe loss due to wireless channel fading and propagation loss in high-speed railway scenario.To improve the quality at the receiving end,spatial diversity was realized by means of cooperative communication technology based on the uncorrelated characteristics of the channels.The model of mobile communication system in high-speed railway was set up,and a cooperative scheme based on statistics was proposed.Mathematical analysis and simulation results show that the quality of the received signal and the performance of the transmission link are significantly improved using cooperative communication technology compared to that in non-cooperative communication mode.展开更多
This study examined mental health issues affecting the group of individuals who are in the social media contact list of the researchers.This was done by administering a closed structured questionnaire,covering informa...This study examined mental health issues affecting the group of individuals who are in the social media contact list of the researchers.This was done by administering a closed structured questionnaire,covering information from participants’demographic characteristics,duration of time spent on ICT usage,to their perceived health effects thereof.Male respondents,largely unemployed are active ICT users,addicted to the Internet,and also suf-fer from unspecified ailments.Aged 31–35 and above,half of men and all women participants spend more than 5 h per day.High-intensive ICT use is associated,in general,with concurrent symptoms of information overload,depression and Internet addiction.It is insignificantly associated with composite stress.Medium intensive ICT use is correlated with fatigue and depression in equal measure but in opposite direction.There are significant differ-ences in demographic attributes as they explain intensity of ICT Usage.The older the employed survey partici-pants are,the less they suffer from composite stress.However,black South Africans suffer significantly from composite stress,fatigue and depression,though negatively from internet addiction.The results also indicate that South African men have negative experiences of composite stress,depression and internet addiction.Educated South Africans have negative experiences of fatigue,but positive experiences of composite stress,depression and internet addiction.Low intensive use of ICT has no impact on composite stress,fatigue and depressive moods of survey participants.It impacts negatively on internet addiction.Medium intensive use of ICT impacts posi-tively on survey participants’experiences of fatigue,but negatively on composite stress,depression and internet addiction.High-intensive use of ICT impacts positively on survey participants’experiences of composite stress and depression.展开更多
The Radio over Fiber (RoF) communication technology combines the technical advantages of both fiber communication and wireless mobile communication to solve the problems of bandwidth,flexibility and electromagnetic in...The Radio over Fiber (RoF) communication technology combines the technical advantages of both fiber communication and wireless mobile communication to solve the problems of bandwidth,flexibility and electromagnetic interference.Research of the technology is drawing wide concerns around the world.However,high cost becomes a drawback of this technology at present.In this article the RoF Multi-System Access (RoFMA) scheme is proposed.The scheme makes use of the Optical Time Division Multiplexing (OTDM) and multi-system multiplex/de-multiplex technologies to lower the access cost.The article also predicts good development and market prospect of the RoFMA technology.展开更多
The optical communication technology features low cost,wide band,low loss,and anti-electromagnetic interference performance.By combining the optical communication technology with the radio millimeter wave communicatio...The optical communication technology features low cost,wide band,low loss,and anti-electromagnetic interference performance.By combining the optical communication technology with the radio millimeter wave communication system,the Millimeter Wave Radio over Fiber (MM-RoF) system boasts a lot of advantages,including wide band,small size,light weight,low cost,low loss,and resistance of electromagnetic interference as well as high transmission quality.The MM-RoF technology solves the problems faced by traditional microwave transmission system at the millimeter wave band,namely,high loss and inability to resist interference efficiently.Meanwhile,it puts an end to the bottleneck of millimeter wave electronic devices and thus is deemed as with great potentials.The MM-ROF technology that supports multiple formats and services signifies one of the significant trends for future development of the MM-RoF system.展开更多
A distance learning Continuing Medical Education （CME） project based on live interactive presentations and a group participatory model demonstrated that important strides can be made in the quality of CME available ...A distance learning Continuing Medical Education （CME） project based on live interactive presentations and a group participatory model demonstrated that important strides can be made in the quality of CME available to health care professionals in African rural settings. Implementers choose a communication model consistent with the fundamental orality of Kenyan and other sub-Saharan African countries. The project involved four hospitals and one training institution in rural Kenya. The testing of learners and focus group discussions with learners, facilitators and presenters indicated that the project＇s methodologies, that strove to be culturally and work place friendly, contributed to gains in knowledge, competencies including case management, the continuity of patient care, team work, staff morale and other issues of expressed importance to the hospital healthcare work force and hospital administrators. The learning system, known as Advancing Continuing Medical Education through Information Technology （ACME-IT）, was implemented by the Kenyan Ministry of Medical Services, EC Associates and the US-funded Aphia2 Western initiative implemented by PATH. The findings of this pilot suggests that the ACME-IT methodology that set up learning centers at the participating institutions is a promising viable alternative to the traditional and relatively expensive workshop training that characterizes much of CME in lower and middle income countries.展开更多
One of the emerging technologies is wireless handheld technology. Implication of these devices is enormous for business community and healthcare domain is not an exception to this phenomena. This research paper provid...One of the emerging technologies is wireless handheld technology. Implication of these devices is enormous for business community and healthcare domain is not an exception to this phenomena. This research paper provides some useful findings about the use of PDA＇s in the healthcare environment through actual usage of PDA in the healthcare ward. A qualitative and quantitative approach is adopted to explore these phenomena due to the exploratory nature of the research. Findings of this study identify some of the motivators and issues associated with the wireless handheld technology in healthcare environment. Furthermore, it is also found that these wireless handheld devices can help to improve the quality of care through better decision making processes. This study is limited to only one sate of Australian and further research is needed to see the implication of the findings to wider community and other domains in the Australian environment.展开更多
This study sought to find out the effects of Information and Communication Technology (ICT) on health service delivery at Tafo Government Hospital. A descriptive survey design was used. Data were collected through the...This study sought to find out the effects of Information and Communication Technology (ICT) on health service delivery at Tafo Government Hospital. A descriptive survey design was used. Data were collected through the use of semi-structured questionnaire and administered to 50 respondents where stratified random sampling technique was used by ranking position as strata. Data were analyzed using descriptive statistics. From the findings, 56% of the respondents overwhelmingly agreed to the fact that the applications of ICT provide quicker medical diagnoses, reduced workload among users, improvement in patients’ waiting time and information accessibility. Nonetheless, 72% bemoaned lack of ICT infrastructure, poor ICT network concerns coupled with that insufficient knowledge on the use of ICT could impede the impact of ICT in quality service delivery. This could be deduced from the findings that ICT improves collaboration and clinical decision support in facilitating clinical work flow integration among nurses and other medical professionals. Moreover, the findings above affirm the fact that without electricity, ICT infrastructure, insufficient skills and technical knowledge in dealing with ICT innovations, it is impossible to successfully adopt ICT resources in health care delivery. The above findings show that the majority of healthcare professional generally had a positive attitude towards ICT prospects as they rated their skill as fairly well. The study recommends that the Ministry of Health plays a supporting role by investing in health care ICT.展开更多
文摘At 23:18 Beijing time on January 5,a LM-3B carrier rocket lifted off from the Xichang Satellite Launch Center,sending a communication technology test satellite into its preset orbit.This successful launch was a good start for China’s launch missions in 2017.The Communications Technology Test Satellite 2 was developed by the Shanghai Academy of Spaceflight Technology.It is a next-generation telecom-
文摘With the acceleration of the intelligent transformation of power systems,the requirements for communication technology are increasingly stringent.The application of 5G mobile communication technology in power communication is analyzed.In this study,5G technology features,application principles,and practical strategies are discussed,and methods such as network slicing,customized deployment,edge computing collaborative application,communication equipment integration and upgrading,and multi-technology collaboration and complementation are proposed.It aims to effectively improve the efficiency,reliability,and security of power communication,solve the problem that traditional communication technology is difficult to meet the diversified needs of power business,and achieve the effect of optimizing the power communication network and supporting the intelligent development of the power system.
文摘In order to forecast promising technologies in the field of next generation mobile communication, various patent indicators were analyzed such as citation per patent, patent family information, patent share, increase rate, and patent activity. These indicators were quantified into several indexes and then integrated into an evaluation score to provide promising technologies. As a result of the suggested patent analysis, four technologies out of twenty two in details classification were selected, which showed outstanding technology competitiveness, high patent share and increasing rates as well as high recent-patent-ratios and triad-patent-family-ratios. Each of the selected technologies scored more than 10 points in total, and the following four technologies were suggested as promising ones in the field of next generation mobile communication: 1) 3GPP based mobile communication, 2) beyond 4G mobile communication, 3) IEEE 802.16 based mobile communication, which are in medium classification of broadband mobile communication system, and 4) testing/certification system of mobile communication, which is in medium classification of mobile communication testing/certification system.
文摘The rapid development of communication technology and computer networks has brought a lot of convenience to production and life,but it also increases the security problem.Information security has become one of the severe challenges faced by people in the digital age.Currently,the security problems facing the field of communication technology and computer networks in China mainly include the evolution of offensive technology,the risk of large-scale data transmission,the potential vulnerabilities introduced by emerging technology,and the dilemma of user identity verification.This paper analyzes the frontier challenges of communication technology and computer network security,and puts forward corresponding solutions,hoping to provide ideas for coping with the security challenges of communication technology and computer networks.
基金the National Natural Science Foundation of China，the PAPD Project of Jiangsu Higher Education Institutions，the National S&T Dedicated Mega-Project，the Qing Lan Project of Jiangsu Province of China，the open research fund of Key Lab of Broadband Wireless Communication and Sensor Network Technology (Nanjing University of Posts and Telecommunications),Ministry of Education
文摘The mainstream approaches to green networking are discussed first from the view of engineering,including resource consolidation,server virtualization,selective connectedness,and proportional computing.A brief introduction to network virtualization techniques is given then and a virtual node embedding approach is provided.Finally,three kinds of enhanced green networking schemes by network virtualization are proposed,that is enhancement to sever virtualization,resource consolidation and Adaptive Link Rate(ALR).Examples are included to show the virtue of network virtualization to green networking in terms of energy efficient communications.
基金support of the Natural Science Foundation of China(Nos.U23A20611 and 52071050)the Innovation and Entrepreneurship of High-level Talents Project of Dalian(No.2020RD07)the Science and Technology Innovation Project of Ningbo(No.2024Z077).
文摘Phosphor bronze is a commonly used elastic copper alloy,widely applied in electronic connectors and terminals[1-4].With the rapid development of 5 G mobile communication technology and the new energy vehicle industry,the size requirements for connectors have been reduced,while the demand for strength has gradually increased[5].This requires the alloy to possess higher strength and better deformability.
文摘Space-Terrestrial Integrated 6G Network:Architecture,Networking,and Transmission Technologies With the large-scale deployment of satellite constellations such as Starlink and the rapid advancement of technologies including artificial intelligence(AI)and non-terrestrial networks(NTNs),the integration of high,medium,and low Earth orbit satellite networks with terrestrial networks has become a critical direction for future communication technologies.
文摘The advancement of 6G wireless communication technology has facilitated the integration of Vehicular Ad-hoc Networks(VANETs).However,the messages transmitted over the public channel in the open and dynamic VANETs are vulnerable to malicious attacks.Although numerous researchers have proposed authentication schemes to enhance the security of Vehicle-to-Vehicle(V2V)communication,most existing methodologies face two significant challenges:(1)the majority of the schemes are not lightweight enough to support realtime message interaction among vehicles;(2)the sensitive information like identity and position is at risk of being compromised.To tackle these issues,we propose a lightweight dual authentication protocol for V2V communication based on Physical Unclonable Function(PUF).The proposed scheme accomplishes dual authentication between vehicles by the combination of Zero-Knowledge Proof(ZKP)and MASK function.The security analysis proves that our scheme provides both anonymous authentication and information unlinkability.Additionally,the performance analysis demonstrates that the computation overhead of our scheme is approximately reduced 23.4% compared to the state-of-the-art schemes.The practical simulation conducted in a 6G network environment demonstrates the feasibility of 6G-based VANETs and their potential for future advancements.
文摘How to realize intelligent and fast bed calls has been a key concern of hospitals.The traditional wired bed call system is not only costly but also less efficient.In this paper,research on bed call systems based on AT89C52 microcontroller is carried out.The nurse-side host(AT89C52)and the bedside slave(AT89C52)communicate over long distances using wireless communication technology.The system transmits signals,including Liquid Crystal Display(LCD),voice announcements,and beeping alarms,to indicate the bed number requiring assistance.This allows the nurse to respond promptly.The system supports real-time updates,where calls and processing occur independently,ensuring efficiency.It is not only cost-effective but also enables a rapid and intelligent call-and-response process.
文摘Considering the undeniable importance of the environment in people’s lives,this study investigates the combined effects of information and communication technology(ICT)and foreign direct investment(FDI)on achieving environmental sustainability.With increasing carbon emissions and their destructive environmental,socioeconomic,and political consequences,the main research question is:what strategies have governments,especially oil-exporting countries,previously used to reduce pollution,and what policies do they plan to implement in the future?Among the policies undertaken by OPEC member countries,has FDI and the development of ICT been effective in preventing environmental damage?To address this,this study uses renewable energy consumption,ICT intensity,FDI,and urbanization as explanatory variables,with carbon dioxide(CO_(2))emissions as the dependent variable.The analysis focuses on OPEC members from 2000 to 2020 using a panel vector autoregression(PVAR)method.The results indicate that a shock to FDI,labor force,urban population,and renewable energy consumption reduces CO_(2)emissions while a shock to gross capital formation increases them.The impact of an ICT shock on CO_(2)emissions is negligible.Variance analysis further shows that urban population,labor force,and FDI have the greatest influence on CO_(2)behavior,therefore,it is necessary to attract more FDI to help reduce CO_(2)in OPEC members.
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Project of Science and Technology Research and Development Plan of China Railway Corporation(No.2013G010-D)Foundation of a Hundred Youth Talent Training Program of Lanzhou Jiaotong University
文摘The user signal quality as well as the performance of transmission link experiences severe loss due to wireless channel fading and propagation loss in high-speed railway scenario.To improve the quality at the receiving end,spatial diversity was realized by means of cooperative communication technology based on the uncorrelated characteristics of the channels.The model of mobile communication system in high-speed railway was set up,and a cooperative scheme based on statistics was proposed.Mathematical analysis and simulation results show that the quality of the received signal and the performance of the transmission link are significantly improved using cooperative communication technology compared to that in non-cooperative communication mode.
文摘This study examined mental health issues affecting the group of individuals who are in the social media contact list of the researchers.This was done by administering a closed structured questionnaire,covering information from participants’demographic characteristics,duration of time spent on ICT usage,to their perceived health effects thereof.Male respondents,largely unemployed are active ICT users,addicted to the Internet,and also suf-fer from unspecified ailments.Aged 31–35 and above,half of men and all women participants spend more than 5 h per day.High-intensive ICT use is associated,in general,with concurrent symptoms of information overload,depression and Internet addiction.It is insignificantly associated with composite stress.Medium intensive ICT use is correlated with fatigue and depression in equal measure but in opposite direction.There are significant differ-ences in demographic attributes as they explain intensity of ICT Usage.The older the employed survey partici-pants are,the less they suffer from composite stress.However,black South Africans suffer significantly from composite stress,fatigue and depression,though negatively from internet addiction.The results also indicate that South African men have negative experiences of composite stress,depression and internet addiction.Educated South Africans have negative experiences of fatigue,but positive experiences of composite stress,depression and internet addiction.Low intensive use of ICT has no impact on composite stress,fatigue and depressive moods of survey participants.It impacts negatively on internet addiction.Medium intensive use of ICT impacts posi-tively on survey participants’experiences of fatigue,but negatively on composite stress,depression and internet addiction.High-intensive use of ICT impacts positively on survey participants’experiences of composite stress and depression.
基金supported by the National Natural Science Foundation under Grant No.60736003
文摘The Radio over Fiber (RoF) communication technology combines the technical advantages of both fiber communication and wireless mobile communication to solve the problems of bandwidth,flexibility and electromagnetic interference.Research of the technology is drawing wide concerns around the world.However,high cost becomes a drawback of this technology at present.In this article the RoF Multi-System Access (RoFMA) scheme is proposed.The scheme makes use of the Optical Time Division Multiplexing (OTDM) and multi-system multiplex/de-multiplex technologies to lower the access cost.The article also predicts good development and market prospect of the RoFMA technology.
基金supported by the National Natural Science Foundation under Grant No.60736003the National Basic Research Program of China("973" Program)under Grant No.2006CB302800
文摘The optical communication technology features low cost,wide band,low loss,and anti-electromagnetic interference performance.By combining the optical communication technology with the radio millimeter wave communication system,the Millimeter Wave Radio over Fiber (MM-RoF) system boasts a lot of advantages,including wide band,small size,light weight,low cost,low loss,and resistance of electromagnetic interference as well as high transmission quality.The MM-RoF technology solves the problems faced by traditional microwave transmission system at the millimeter wave band,namely,high loss and inability to resist interference efficiently.Meanwhile,it puts an end to the bottleneck of millimeter wave electronic devices and thus is deemed as with great potentials.The MM-ROF technology that supports multiple formats and services signifies one of the significant trends for future development of the MM-RoF system.
文摘A distance learning Continuing Medical Education （CME） project based on live interactive presentations and a group participatory model demonstrated that important strides can be made in the quality of CME available to health care professionals in African rural settings. Implementers choose a communication model consistent with the fundamental orality of Kenyan and other sub-Saharan African countries. The project involved four hospitals and one training institution in rural Kenya. The testing of learners and focus group discussions with learners, facilitators and presenters indicated that the project＇s methodologies, that strove to be culturally and work place friendly, contributed to gains in knowledge, competencies including case management, the continuity of patient care, team work, staff morale and other issues of expressed importance to the hospital healthcare work force and hospital administrators. The learning system, known as Advancing Continuing Medical Education through Information Technology （ACME-IT）, was implemented by the Kenyan Ministry of Medical Services, EC Associates and the US-funded Aphia2 Western initiative implemented by PATH. The findings of this pilot suggests that the ACME-IT methodology that set up learning centers at the participating institutions is a promising viable alternative to the traditional and relatively expensive workshop training that characterizes much of CME in lower and middle income countries.
文摘One of the emerging technologies is wireless handheld technology. Implication of these devices is enormous for business community and healthcare domain is not an exception to this phenomena. This research paper provides some useful findings about the use of PDA＇s in the healthcare environment through actual usage of PDA in the healthcare ward. A qualitative and quantitative approach is adopted to explore these phenomena due to the exploratory nature of the research. Findings of this study identify some of the motivators and issues associated with the wireless handheld technology in healthcare environment. Furthermore, it is also found that these wireless handheld devices can help to improve the quality of care through better decision making processes. This study is limited to only one sate of Australian and further research is needed to see the implication of the findings to wider community and other domains in the Australian environment.
文摘This study sought to find out the effects of Information and Communication Technology (ICT) on health service delivery at Tafo Government Hospital. A descriptive survey design was used. Data were collected through the use of semi-structured questionnaire and administered to 50 respondents where stratified random sampling technique was used by ranking position as strata. Data were analyzed using descriptive statistics. From the findings, 56% of the respondents overwhelmingly agreed to the fact that the applications of ICT provide quicker medical diagnoses, reduced workload among users, improvement in patients’ waiting time and information accessibility. Nonetheless, 72% bemoaned lack of ICT infrastructure, poor ICT network concerns coupled with that insufficient knowledge on the use of ICT could impede the impact of ICT in quality service delivery. This could be deduced from the findings that ICT improves collaboration and clinical decision support in facilitating clinical work flow integration among nurses and other medical professionals. Moreover, the findings above affirm the fact that without electricity, ICT infrastructure, insufficient skills and technical knowledge in dealing with ICT innovations, it is impossible to successfully adopt ICT resources in health care delivery. The above findings show that the majority of healthcare professional generally had a positive attitude towards ICT prospects as they rated their skill as fairly well. The study recommends that the Ministry of Health plays a supporting role by investing in health care ICT.
