tailieunhanh - The next great telecom revolution phần 3

Kết quả là, các mạng điện thoại di động được mệnh để trở thành nhanh hơn và đồng đều hơn trong vài năm tới. Mạng bị giới hạn bởi băng thông thấp và chắp vá một tiêu chuẩn không tương thích, sẽ cung cấp cho một hệ thống tương thích hỗ trợ một loạt các thiết bị và cung cấp chuyển vùng liền mạch. Hãy tưởng tượng một thế giới không dây trong các mạng cung cấp dữ liệu băng thông rộng và . | SMART FABRICS 31 materials and related improvements to our built environment. In an effort to improve building industry efficiency Elvin recently led a study that examined the effects of using wireless-enabled portable computers to complete integrated design-construction projects. The study looked at systems that can be strapped to a toolbelt as well as pen-based electronic tablets. Elvin says the study aimed to measure the accuracy timeliness completeness and efficiency of information exchange enabled by wearable computers. The study was based on interviews with architects and contractors constructionsite observations and data from controlled experiments at the Illinois Building Research Council. In those experiments three small structures were built using different communications devices traditional paper documents a pen-based tablet computer and a wearable computer with flat-panel display. Results indicated that tablet and wearable computers may significantly reduce rework while productivity decreased slightly when tablet and wearable computers were used Elvin says. With paper documents for example percent of total project time was spent redoing some aspect of the project compared with percent with the wearable computer. Elvin says communications that use paper were probably less efficient because the quality of paper documents faxed to job sites is often poor electronic tablets or wearable computers however allow construction-team members to enlarge parts of documents to view greater detail. Elvin says a dip of less than 8 percent in productivity indicated in the study is typical of the initial decline in productivity observed when a new technology is introduced to a workforce in any field. Further study is needed to determine the long-term productivity impacts of tablet and wearable computers once the user had become proficient in their use. SMART FABRICS A mobile phone with lapels An MP3 player with a zipper In the world of smart fabrics .