关键词： 智慧校园   位置服务   增强现实   移动计算   校园导览  

摘要： 情境感知作为一种强交互形态,是智慧校园建设的一大热点内容。本文基于增强现实（AR）、位置服务和移动计算等技术,设计并实现了地理导航与文化浏览一体化的校园导览系统。系统以Android手机平台为客户端,包含校园热点新闻推送、校园地理位置导航、校园建筑（群）定向搜索、校园文化导览等以校园环境和校园文化为核心的服务与功能。旨在为校内外人员提供一个熟悉校园地理文化环境的综合服务体,同时探索移动增强现实和位置服务等技术应用于校园导览的效果,为＂智慧校园＂的子系统设计提供思路,同时也为K-12教师创建有教育意义的户外探究活动提供参考。

关键词： 煤矿开采沉陷   预测模型   影响函数法   上覆岩层  

摘要： 为了揭示在采动影响下工作面上覆岩层在垮落、变形过程中导致的渗透率变化,对广泛应用于地表开采沉陷预测的影响函数法进行函数的修正与优化,设计了计算步骤并将其应用到地表下岩层内部的变形移动计算,建立了基于影响函数法的采动岩层移动预计模型,获得了岩层水平及垂直方向的应变描述。结合煤岩体渗透率的计算模型,建立了"面应变-孔隙率-渗透率"的描述煤岩体渗透率变化的表征模型。以某浅埋深工作面开采时期地表及覆岩层移动的现场观测数据为依据,对建立的岩层移动预测模型的可靠性进行了检验。结果表明:该模型的计算结果可靠性高,可以进一步应用其来计算展示该工作面在开采过后覆岩层的渗透率变化情况。

关键词： 二维码   手机二维码   移动计算  

摘要： 随着学院飞行训练任务的增加和航材消耗速度的快速上升,学院当前使用的某航材库存申请系统已无法完全满足飞行训练任务的需求。其主要表现在无法随时随地发送,填写手段复杂、耗时长和无法帮助库存管理人员提高发送效率,降低航材错发率三个方面。通过引入移动端和条码技术,可以解决只能在固定地点填写申请的问题,将一次性大量申请变为少量多批次申请,简化申请过程,提高航材管理人员工作效率和工作准确性。

关键词： 个人信息管理   移动社交网络   移动计算   QQBot  

摘要： 随着信息技术的发展,用户自身的描述性信息也变得更加复杂。大数据时代下的个人信息与传统的个人信息不同,不仅含有较多维度且具有时空特性。为了解决这种情况下用户个人资讯难以管理的问题,本文设计了一种基于QQBot的个人资讯管理系统。本系统从多个角度管理用户的资讯信息,功能丰富高效且不臃肿,实现了对复杂的个人资讯的有效管理。

关键词： Intracranialhemorrhage   Headtrauma   CT   Dual energy   Bone removal  

摘要： Purpose One of the major applications of dual-energy computed tomography (DECT) is automated bone removal (BR). We hypothesized that the visualization of acute intracranial hemorrhage could be improved on BRCT by removing bone as it has the highest density tissue in the head. This preliminary study evaluated the efficacy of a DE BR algorithm for the head CT of trauma patients. Methods Sixteen patients with acute intracranial hemorrhage within 1 day after head trauma were enrolled in this study. All CT examinations were performed on a dual-source dual-energy CT scanner. BRCT images were generated using the Bone Removal Application. Simulated standard CT and BRCT images were visually reviewed in terms of detectability (presence or absence) of acute hemorrhagic lesions. Results DECT depicted 28 epidural/subdural hemorrhages, 17 contusional hemorrhages, and 7 subarachnoid hemorrhages. In detecting epidural/subdural hemorrhage, BRCT [28/28 (100%)] was significantly superior to simulated standard CT [17/28 (61%)] (p = .001). In detecting contusional hemorrhage, BRCT [17/17 (100%)] was also significantly superior to simulated standard CT [11/17 (65%)] (p = .0092). Conclusion BRCT was superior to simulated standard CT in detecting acute intracranial hemorrhage. BRCT could improve the detection of small intracranial hemorrhages, particularly those adjacent to bone, by removing bone that can interfere with the visualization of small acute hemorrhage. In an emergency such as head trauma, BRCT can be used as support imaging in combination with simulated standard CT and bone scale CT, although BRCT cannot replace a simulated standard CT.

关键词： 移动计算   可穿戴设备   数据安全与隐私   安全威胁   隐私保护  

摘要： 基于可穿戴设备的移动计算被视为支撑泛在感知型应用的重要技术,它使用大范围部署的传感器持续不断地感知环境信息,利用短距通信和数据挖掘/机器学习技术传递和处理感知数据.现有的可穿戴设备相关工作主要关注新型移动应用、信息采集、产品形态和人性化用户接口等方面的设计与实现.然而,面向可穿戴设备的数据安全隐私保护技术研究尚处于起步阶段.从数据分析者的视角来看,研究者分析可穿戴设备的数据源特点与隐私安全隐患,重点研究基于多源感知数据的个体活动识别方法和数据挖掘机制;从隐私安全保护者的视角来看,面向可穿戴设备的隐私保护技术亟需解决云辅助的隐私保护机制、隐私感知的个人信息发布和基于策略的访问控制等方面的问题.以可穿戴健康跟踪设备Fitbit为对象展开了可穿戴设备安全与隐私实例分析.最后,总结了面向可穿戴设备的隐私保护的8条技术途径,并展望了需要进一步研究的热点问题.

关键词： 生态圈   微软公司   定义   移动计算   个人电脑   基础资源   运算能力   云计算  

摘要： 微软公司CEO萨提亚·纳德拉上任后,提出了微软未来重要的发展战略：“移动为先,云为先”.这亦是微软在“设备＋服务”战略上的延伸.“为人们提供任何时候都最具生产力的工具”是微软想要实现的愿景.一如三十多年前个人电脑的兴起,云计算、移动计算等新技术的崛起引领IT业全面转型.计算机的运算能力在云端变成基础资源,随用随取.而基于云计算、跨平台的移动计算和设备已占领了用户的桌面、客厅和手掌.

摘要： Presents the 2017 subject/author index for this publication.

关键词： MOBILE computing   GEOSPATIAL data  

关键词： Cybersecurity   Environmental   Human health   Social economic   Wireless and mobile computing  

摘要： with the advance of internet technology, wireless and mobile computing have become more and more popular and has been an integral part of our daily life. The paper attempts to conduct a comprehensive investigation of the impact of the wireless and mobile computing on our society. Specifically, a comprehensive literature survey will be studied to investigate the impacts of wireless and mobile computing on social economics, politics, education, human health, environment, and cybersecurity. The economic impact on our society has been huge from the service providers, hardware manufacturers, and online mobile shopping that have been part of the growth of this sector of business. The controversial Radio Frequency Electromagnetic Fields, the driving distraction of mobile device, and the application of wireless wearable devices in the health field are among the popular topics on human health impacts. The increase use of the mobile devices has successfully shifted the news to somewhat interactive social media. Along with the advance in internet technology and mobile computing, online education becomes more and more popular and provide better accessibility to students to configure a schedule that works around their schedule if they are working, however, it finds out that students who use computers consistently at school surprisingly have the worst learning results, and that is even true when accounting for socio-economic and demographics of the students. The toxic elements, the parts of the devices disposed, the ever increasing energy to produce the mobile devices and the use of the mobile computing are among the critical aspects of the environmental impacts of mobile computing. Cybersecurity is big threat to the cyber, especially to wireless and mobile computing. Malware, phishing, ransomware, man in the middle attacks and malicious insider actions are the most popular security threats to wireless and mobile computing. © 2018 Journal of Communications.