目前,国内高速铁路使用基于全球铁路移动通信系统(Global System for Mobile Communications-Railway,GSM-R)的双向无线通信系统,实现列车与地面之间的安全信息传输。然而,无线通信存在传输延迟和丢包,严重时会影响运行效率,因此需要研...目前,国内高速铁路使用基于全球铁路移动通信系统(Global System for Mobile Communications-Railway,GSM-R)的双向无线通信系统,实现列车与地面之间的安全信息传输。然而,无线通信存在传输延迟和丢包,严重时会影响运行效率,因此需要研究GSM-R系统服务质量(Quality of Service,QoS)参数,以满足实时性和可用性需求。选取传输延时作为待优化的GSM-R无线通信系统QoS参数,定量分析端到端传输延迟时间,提出基于无线传输参数自适应的加强学习优化方案。仿真结果表明,该方法可以显著提升无线通信系统性能。展开更多
The global system for mobile communication(GSM)is planned to meet the needs of the whole subscribers.The number of subscribers increased as the population increased due to the acceptance of GSM services by the subscri...The global system for mobile communication(GSM)is planned to meet the needs of the whole subscribers.The number of subscribers increased as the population increased due to the acceptance of GSM services by the subscribers.Thus,there should be a way to monitor base stations that will meet the increasing demand of subscribers in any area as a population surge will lead to more subscriptions.This will allow GSM network operators to serve their subscribers better and ease network congestion.This work presents a review of mobile evolution from the first generation to the fifth generation.A review of global positioning system(GPS)technology and its applications to geographic information systems(GIS)was done.The coordinates of these base stations were taken using a GPS device.These base station coordinates were then exported to QGIS for the design of the map.Thereafter,the output map was then integrated into the website.The discussions on the results followed and some useful suggestions given will go a long way to help the operators of GSM in Nigeria and in general.If the propositions given are adhered to,it will go a long way to help the operators reduce congestion on their network and thereby increase the satisfaction of the subscribers.展开更多
在对全球移动通信系统(Global System for Mobile Communications,GSM)的应用特点及技术原理进行简要探讨的基础上,围绕总体设计、单元设计和软硬件设计3个方面,研究基于GSM模块的电子信息自动化处理系统的设计策略,并对系统功能的应用...在对全球移动通信系统(Global System for Mobile Communications,GSM)的应用特点及技术原理进行简要探讨的基础上,围绕总体设计、单元设计和软硬件设计3个方面,研究基于GSM模块的电子信息自动化处理系统的设计策略,并对系统功能的应用进行分析,指出系统运行的要点。展开更多
While people from Western countries do not always understand of the underlying cultural values of most Chinese stories,the Hua Mulan story has gained significant recognition from Western audiences.Therefore,it would b...While people from Western countries do not always understand of the underlying cultural values of most Chinese stories,the Hua Mulan story has gained significant recognition from Western audiences.Therefore,it would be quite beneficial if we could understand the key elements that have contributed to the success of the Hua Mulan story so that we can employ similar elements in other intercultural communication programs and promote the communication and dissemination of cultures between China and the rest of the world.According to the findings from the interviews of 6,130 respondents from 107 countries,we found that the Hua Mulan story gains global acceptance because it represents a story of“a hero with a thousand faces,”which embodies the integration of Chinese traditions and contemporary spirit through sharing a global meaning while responding to various culturally common challenges.Five key cultural value dimensions are responsible for this Chinese story’s cross-cultural affinity and influence,which helped it win recognition and empathy worldwide.The five key cultural value dimensions are loyalty and patriotism,the courage to take responsibility,compatibility of individualism and collectivism,respondence to the multicultural appeal,and hero growth.These dimensions are then generalized as the value identity orientation grounded in a Global Shared Meaning(GSM)in this study.展开更多
This paper investigated the growth and policy implications of Global System for Mobile Communication in Nigeria. Stochastic economic modeling was used to analyze Nigeria＇s time series data. The models were adjudged r...This paper investigated the growth and policy implications of Global System for Mobile Communication in Nigeria. Stochastic economic modeling was used to analyze Nigeria＇s time series data. The models were adjudged reliable before they were used. The components of the model were defined and a prior expectation of the relationship among the variables explained for the purpose of giving the reviewers and users a deep insight into the phenomenon under study. The secondary data used for the study were processed using the E-View for windows electronic packages. The outcome of the empirical and stochastic investigations shows that Global System for Mobile Communication has a positive relationship with output growth in Nigeria. The impact is of a higher magnitude. The usage of Global System for Mobile Telecommunication led to 17 percent rise in the output growth. The findings suggest the need for the Nigerian Communication Commission （NCC） and the federal government of Nigeria to expand tele-density and directly make telephone communications cheap and accessible. To achieve this goal, more licenses should be given to GSM operators in order to allow for healthy competition among them. This will lead to improved quality of services, quality of product and consequently sustain the growth and development of the country.展开更多
ZTE Corporation continues to garner significant recognition from international and independent research firms.Frost&Sullivan,in its Global GSM Market Analysis report,predicts that ZTE will be one of the top three ...ZTE Corporation continues to garner significant recognition from international and independent research firms.Frost&Sullivan,in its Global GSM Market Analysis report,predicts that ZTE will be one of the top three global GSM展开更多
铁路在陆地运输系统中占有举足轻重的位置,我国的铁路网从原来的“追随”阶段走向“领跑”阶段。铁路系统全面更新,包括铁路基础设施、通信系统以及电力系统等。铁路通信设计的综合专用数字移动通信(Global System for Mobile Communica...铁路在陆地运输系统中占有举足轻重的位置,我国的铁路网从原来的“追随”阶段走向“领跑”阶段。铁路系统全面更新,包括铁路基础设施、通信系统以及电力系统等。铁路通信设计的综合专用数字移动通信(Global System for Mobile Communications–Railway,GSM-R)技术是一种新型的列车通信技术,它既可以提高铁路的通信品质,又可以为列车提供可靠的数据传输服务。通过对GSM-R技术特性的剖析,对该技术在铁路交通中的运用进行了详细的分析和论述。展开更多
目的基于现代化信息技术监控、调度车辆,实现对车辆的动态管理.防止和减少交通事故,提高交通运输管理能力。方法通过集成使用GIS(geographic information system,地理信息系统)、GPS(global positioning system,全球定位系统)、GSM(glob...目的基于现代化信息技术监控、调度车辆,实现对车辆的动态管理.防止和减少交通事故,提高交通运输管理能力。方法通过集成使用GIS(geographic information system,地理信息系统)、GPS(global positioning system,全球定位系统)、GSM(global system for mobile communications,全球移动通信系统)、GPRS(general packet radio service,通用无线分组业务)、中间件等技术,并按图属一体化、多尺度数据无缝集成的建库思想,完成了系统设计的数据建库、无线网络设置、道路匹配和信息显示等关键技术问题。结果实现了对多种车辆目标的实时跟踪和动态管理。结论综合使用GIS,GPS,GSM/GPRS等信息技术,建立车辆动态监控系统,是现代交通运输发展的必然趋势。展开更多
文摘目前,国内高速铁路使用基于全球铁路移动通信系统(Global System for Mobile Communications-Railway,GSM-R)的双向无线通信系统,实现列车与地面之间的安全信息传输。然而,无线通信存在传输延迟和丢包,严重时会影响运行效率,因此需要研究GSM-R系统服务质量(Quality of Service,QoS)参数,以满足实时性和可用性需求。选取传输延时作为待优化的GSM-R无线通信系统QoS参数,定量分析端到端传输延迟时间,提出基于无线传输参数自适应的加强学习优化方案。仿真结果表明,该方法可以显著提升无线通信系统性能。
文摘The global system for mobile communication(GSM)is planned to meet the needs of the whole subscribers.The number of subscribers increased as the population increased due to the acceptance of GSM services by the subscribers.Thus,there should be a way to monitor base stations that will meet the increasing demand of subscribers in any area as a population surge will lead to more subscriptions.This will allow GSM network operators to serve their subscribers better and ease network congestion.This work presents a review of mobile evolution from the first generation to the fifth generation.A review of global positioning system(GPS)technology and its applications to geographic information systems(GIS)was done.The coordinates of these base stations were taken using a GPS device.These base station coordinates were then exported to QGIS for the design of the map.Thereafter,the output map was then integrated into the website.The discussions on the results followed and some useful suggestions given will go a long way to help the operators of GSM in Nigeria and in general.If the propositions given are adhered to,it will go a long way to help the operators reduce congestion on their network and thereby increase the satisfaction of the subscribers.
文摘在对全球移动通信系统(Global System for Mobile Communications,GSM)的应用特点及技术原理进行简要探讨的基础上,围绕总体设计、单元设计和软硬件设计3个方面,研究基于GSM模块的电子信息自动化处理系统的设计策略,并对系统功能的应用进行分析,指出系统运行的要点。
基金funded by the National Social Science Fund of China“A study on the Narrative Strategy of‘Telling Chinese Stories Well’in the Cross-cultural Context”(17XXW008).
文摘While people from Western countries do not always understand of the underlying cultural values of most Chinese stories,the Hua Mulan story has gained significant recognition from Western audiences.Therefore,it would be quite beneficial if we could understand the key elements that have contributed to the success of the Hua Mulan story so that we can employ similar elements in other intercultural communication programs and promote the communication and dissemination of cultures between China and the rest of the world.According to the findings from the interviews of 6,130 respondents from 107 countries,we found that the Hua Mulan story gains global acceptance because it represents a story of“a hero with a thousand faces,”which embodies the integration of Chinese traditions and contemporary spirit through sharing a global meaning while responding to various culturally common challenges.Five key cultural value dimensions are responsible for this Chinese story’s cross-cultural affinity and influence,which helped it win recognition and empathy worldwide.The five key cultural value dimensions are loyalty and patriotism,the courage to take responsibility,compatibility of individualism and collectivism,respondence to the multicultural appeal,and hero growth.These dimensions are then generalized as the value identity orientation grounded in a Global Shared Meaning(GSM)in this study.
文摘This paper investigated the growth and policy implications of Global System for Mobile Communication in Nigeria. Stochastic economic modeling was used to analyze Nigeria＇s time series data. The models were adjudged reliable before they were used. The components of the model were defined and a prior expectation of the relationship among the variables explained for the purpose of giving the reviewers and users a deep insight into the phenomenon under study. The secondary data used for the study were processed using the E-View for windows electronic packages. The outcome of the empirical and stochastic investigations shows that Global System for Mobile Communication has a positive relationship with output growth in Nigeria. The impact is of a higher magnitude. The usage of Global System for Mobile Telecommunication led to 17 percent rise in the output growth. The findings suggest the need for the Nigerian Communication Commission （NCC） and the federal government of Nigeria to expand tele-density and directly make telephone communications cheap and accessible. To achieve this goal, more licenses should be given to GSM operators in order to allow for healthy competition among them. This will lead to improved quality of services, quality of product and consequently sustain the growth and development of the country.
文摘ZTE Corporation continues to garner significant recognition from international and independent research firms.Frost&Sullivan,in its Global GSM Market Analysis report,predicts that ZTE will be one of the top three global GSM
文摘铁路在陆地运输系统中占有举足轻重的位置,我国的铁路网从原来的“追随”阶段走向“领跑”阶段。铁路系统全面更新,包括铁路基础设施、通信系统以及电力系统等。铁路通信设计的综合专用数字移动通信(Global System for Mobile Communications–Railway,GSM-R)技术是一种新型的列车通信技术,它既可以提高铁路的通信品质,又可以为列车提供可靠的数据传输服务。通过对GSM-R技术特性的剖析,对该技术在铁路交通中的运用进行了详细的分析和论述。
文摘目的基于现代化信息技术监控、调度车辆,实现对车辆的动态管理.防止和减少交通事故,提高交通运输管理能力。方法通过集成使用GIS(geographic information system,地理信息系统)、GPS(global positioning system,全球定位系统)、GSM(global system for mobile communications,全球移动通信系统)、GPRS(general packet radio service,通用无线分组业务)、中间件等技术,并按图属一体化、多尺度数据无缝集成的建库思想,完成了系统设计的数据建库、无线网络设置、道路匹配和信息显示等关键技术问题。结果实现了对多种车辆目标的实时跟踪和动态管理。结论综合使用GIS,GPS,GSM/GPRS等信息技术,建立车辆动态监控系统,是现代交通运输发展的必然趋势。
