关键词： Remote procedure call   Distributed systems   Interprocess communication   Cloud computing   Mobile computing   Geo-distributed mobile cloud computing   Smart mobile devices  

摘要： Remote Procedure Call (RPC) is a computing as well as communication model for distributed processes to execute client routines on remote servers in the distributed systems. Due to the evolution of geodistributed mobile cloud computing systems, mobile devices are exposed to frequent disconnection due to limited battery lifetime, processing capacity and network bandwidth while roaming globally. The existing standard RPC and mobile RPC frameworks are not completely suitable for applications in geo-distributed mobile cloud computing. This paper proposes a novel software architecture and associated algorithms for realizing reliable RPC under global mobility of clients. The stateful server chaining and multiple authentication primitives are employed in the proposed design to achieve security as well as location transparency. The software architecture is implemented on heterogeneous testbed and evaluated with promising results. The heterogeneity of mobile cloud platform is considered in the design by employing specific XDR format enhancing portability. A detailed comparative analysis of the proposed design is included in the paper. (C) 2018 Elsevier B.V. All rights reserved.

关键词： Anions   Crystal structure   Fluorine   Nuclear magnetic resonance spectroscopy   Cations  

摘要： High-resolution F-19 magic-angle spinning (MAS) NMR spectra were obtained for the uranium-bearing solid uranyl fluoride sesquihydrate (UO2F2 center dot 1.57H(2)O). While there are seven distinct crystallographic fluorine sites, the F-19 NMR spectrum reveals six peaks at -33.3, 9.1, 25.7, 33.0, 39.0, and 48.2 ppm, with the peak at 33.0 ppm twice the intensity of all the others and therefore corresponding to two sites. To assign the peaks in the experimental spectra to crystallographic sites, F-19 chemical shifts were calculated using the gauge including projector augmented waves (GIPAW) plane-wave pseudopotential approach for a DFT-optimized crystal structure. The peak assignments from DFT are consistent with two-dimensional double-quantum F-19 MAS NMR experiments.

关键词： 数字图书馆服务   云计算   移动计算   协同机制  

摘要： 从当今数字图书馆处理海量数据的过程中遇到若干问题为思考的出发点,尝试提出数字图书馆面向移动海量数据的协同服务机制,该机制很好地整合了"云"强大的数据运算、大规模的存储能力与手机的便捷性,有助于提升云环境下的数字图书馆信息服务的用户体验。

关键词： Photo collage   Photomosaic   Mobile platform  

摘要： In the last few decades, mobile computing platform technology has grown rapidly, as observed from smart phones that have quickly become ubiquitous. The mobile computing platform is the most widely used platform in our life today, and digital photographs captured through these devices have become routine for most people. In this study, we propose a novel artistic method for displaying photographs in mobile devices as a photo collage. Using our system, users can view a representative photograph as a collage of photographs associated with a certain event and access each of photographs individually. To implement this, we employ centroidal Voronoi diagram to obtain an even distribution of tiles, and use the sites as the location of tiles. We use the edge avoidance technique to prevent tiles from being located across the edges. To obtain the direction of tiles that follow near a strong edge, we employ the Edge tangent Flow field and use the field as the directions of tiles. Finally, we search for photographs that best match the tiles calculated above by using a thumbnail difference metric.

关键词： 《哈佛商业评论》   咨询行业   战略管理咨询   数字技术   战略咨询   移动计算   领导力   咨询业  

摘要： 女性要想培养真正的领导力,关键是先掌握领导自己的能力五年前,“颠覆式创新”理论大儒克莱顿·克里斯坦森（Clayton Christensen）在《哈佛商业评论》上发表《颠覆咨询业》,指出大数据、移动计算等新兴数字技术不仅在颠覆行业,也危及传统咨询行业。数字化在改变战略咨询的行业客户,也在改变战略咨询本身。这也是余进在这个行业扎根15年后的顿悟。咨询业的未来必然是帮助客户找到战略与数字技术的最佳结合。完成这个结合的使能者必须具备战略管理咨询以及数字化转型的DNA。

关键词： 移动网络通信   计算机   技术   研究  

摘要： 本文主要对当今计算机网络通信技术进行了研究从而得出结论,移动计算机网络通信技术应该如何发展。

关键词： 应用流式   透明计算   BYOD   移动计算   位置信息  

摘要： 在目前BYOD解决方案实现方式中,程序、数据全部存储在移动设备中,安全保障主要依赖移动设备上复杂的访问控制;同时现有方案不能充分利用移动设备的位置信息进行权限管理。针对上述问题,结合应用流式的思想,设计并实现了一个流式移动应用分发系统——AS-Droid。其拥有基于位置信息进行灵活的应用授权、管理的能力,并且使用轻量级客户端。实验结果表明,系统在BYOD下具备可用性,健壮性及安全性。进一步实验数据表明,在应用下载、安装及启动过程中,AS-Droid系统比Android系统能够减少超过35%的时延及大约25%的流量消耗,同时两种系统能耗基本持平。

关键词： 移动计算平台   高通公司   PC产品   Windows   Qualcomm   三星电子   调制解调器   智能引擎  

摘要： 高通公司（Qualeomnl）近日宣布，与三星电子有限公司展开合作，在三星未来推出的PC产品中搭载集成了先进的骁龙X20LTE调制解调器以及Qualcomm人工智能引擎（AIEngine）的Qualcomm骁龙850移动计算平台。

关键词： 数字图书馆   云计算   移动计算   协同机制  

摘要： 移动网络环境下,数字图书馆的信息服务存在诸如移动设备存储不足、计算能力低以及数据传输不便等问题。为此,文章提出了数字图书馆信息服务同步机制,利用云计算实现数字图书馆服务器、用户移动设备以及个人云空间之间的无缝协同工作。该机制将强大的存储和计算能力,以及移动计算的便携性进行有效集成,有助于知识分享和提高用户的工作效率。