Mobile applications are being used in a great range of fields and application areas. As a result, many research fields have focused on the study and improvement of such devices. The current Smartphones are the best ex...Mobile applications are being used in a great range of fields and application areas. As a result, many research fields have focused on the study and improvement of such devices. The current Smartphones are the best example of the research and the evolution of these technologies. Moreover, the software design and development is progressively more focused on the user; finding and developing new mobile interaction models. In order to do so, knowing what kind of problems the users could have is vital to enhance a bad interaction design. Unfortunately, a good software quality evaluation takes more time than the companies can invest. The contribution revealed in this work is a new approach to quality testing methodology focused on mobile interactions and their context in use where external capturing tools, such as cameras, are suppressed and the evaluation environments are the same as the user will use the application. By this approach, the interactions can be captured without changing the context and consequently, the data will be more accurate, enabling the evaluation of the quality-in-use in real environments.展开更多
In mobile computing systems,message logging can be used to provide fault tolerance for mobilehosts.Due to the mobility of mobile hosts,their recovery information,including logged messages andcheckpoints,may spread thr...In mobile computing systems,message logging can be used to provide fault tolerance for mobilehosts.Due to the mobility of mobile hosts,their recovery information,including logged messages andcheckpoints,may spread throughout mobile support stations.During recovery,there will be a considerablecost for the collection of recovery information.To speed up recovery and to reduce the failure-freeoverhead,an improved area-difference-based scheme is proposed.It tries to keep recovery informationevenly spreading over an area.Only part of recovery information needs to be migrated for controlling thedistribution of recovery information.To reduce the migration cost,a light-weight migration is also proposed.In the performance study,we give an analysis of the probability that the light-weight migrationtakes place.展开更多
随着高速公路建设的不断发展,交通运输业对公路运营质量要求越来越高。目前养护手段普遍存在资料不全、低效,数据共享难的问题,本文结合最新信息技术手段和建筑信息模型(BIM,building Information Modeling)的思想,提出一种基于BIM+GIS...随着高速公路建设的不断发展,交通运输业对公路运营质量要求越来越高。目前养护手段普遍存在资料不全、低效,数据共享难的问题,本文结合最新信息技术手段和建筑信息模型(BIM,building Information Modeling)的思想,提出一种基于BIM+GIS技术的公路预防性养护方法,将公路资产管理与养护集成到三维可视化平台,同时基于BIM模型,提出预防性养护决策模型,为公路资产管理、道路养护管理等提供管理决策平台。展开更多
文摘Mobile applications are being used in a great range of fields and application areas. As a result, many research fields have focused on the study and improvement of such devices. The current Smartphones are the best example of the research and the evolution of these technologies. Moreover, the software design and development is progressively more focused on the user; finding and developing new mobile interaction models. In order to do so, knowing what kind of problems the users could have is vital to enhance a bad interaction design. Unfortunately, a good software quality evaluation takes more time than the companies can invest. The contribution revealed in this work is a new approach to quality testing methodology focused on mobile interactions and their context in use where external capturing tools, such as cameras, are suppressed and the evaluation environments are the same as the user will use the application. By this approach, the interactions can be captured without changing the context and consequently, the data will be more accurate, enabling the evaluation of the quality-in-use in real environments.
基金Supported by the High Technology Research and Developme.nt Programme of China (No. 2008AA01A201, 2008AA01 A204)
文摘In mobile computing systems,message logging can be used to provide fault tolerance for mobilehosts.Due to the mobility of mobile hosts,their recovery information,including logged messages andcheckpoints,may spread throughout mobile support stations.During recovery,there will be a considerablecost for the collection of recovery information.To speed up recovery and to reduce the failure-freeoverhead,an improved area-difference-based scheme is proposed.It tries to keep recovery informationevenly spreading over an area.Only part of recovery information needs to be migrated for controlling thedistribution of recovery information.To reduce the migration cost,a light-weight migration is also proposed.In the performance study,we give an analysis of the probability that the light-weight migrationtakes place.
文摘随着高速公路建设的不断发展,交通运输业对公路运营质量要求越来越高。目前养护手段普遍存在资料不全、低效,数据共享难的问题,本文结合最新信息技术手段和建筑信息模型(BIM,building Information Modeling)的思想,提出一种基于BIM+GIS技术的公路预防性养护方法,将公路资产管理与养护集成到三维可视化平台,同时基于BIM模型,提出预防性养护决策模型,为公路资产管理、道路养护管理等提供管理决策平台。
