基于云计算的手机图书馆服务整合探析

随着手机图书馆成为图书馆服务的新阵地,越来越多的图书馆的传统服务在手机图书馆上体现出新的生命力。依赖于云计算技术的手机图书馆克服了手机作为服务终端所存在的服务瓶颈,成为手机图书馆的最佳搭档。本文探讨了手机云计算以及其优势,以及在云计算环境下,手机图书馆的服务整合理念和模式。     

A Cloud-Based Virtualized Execution Environment for Mobile Applications

Smartphones and cloud computing technologies have enabled the development of sophisticated mobile applications. Still, many of these applications do not perform well due to limited computation, data storage, network bandwidth, and battery capacity in a mobile phone. While applications can be redesigned with client-server models to benefit from cloud services, users are no longer in full control of the application. This is also a serious concern. We propose an innovative framework for executing mobile applications in a virtualized cloud environment. With encryption and isolation, this environment is controlled by the user and protected against eavesdropping from cloud providers. We have developed efficient schemes for migrating applications and synchronizing data between execution environments. Performance and power issues within a virtualized execution environment are also addressed using power saving and scheduling techniques that enable automatic, seamless application migration.     

A survey of mobile cloud computing: architecture,applications, and approaches

Together with an explosive growth of the mobile applications and emerging of cloud computing concept, mobile cloud computing (MCC) has been introduced to be a potential technology for mobile services. MCC integrates the cloud computing into the mobile environment and overcomes obstacles related to the performance (e.g., battery life, storage, and bandwidth), environment (e.g., heterogeneity, scalability, and availability), and security (e.g., reliability and privacy) discussed in mobile computing. This paper gives a survey of MCC, which helps general readers have an overview of the MCC including the definition, architecture, and applications. The issues, existing solutions, and approaches are presented. In addition, the future research directions of MCC are discussed. Copyright © 2011 John Wiley & Sons, Ltd.     

基于云架构的手机NFC小区应用

云计算的最大优势之一就是资源和应用的集中部署与分散使用,从而实现低成本的信息服务。在云架构的基础上实现手机NFC在小区内部应用和手机支付应用,在提供便民服务的同时保证服务的安全性,从而加快小区内部智能化建设并引导和激活各小区内部封闭商圈的信息化发展。     

移动云计算安全问题及安全度量方法浅析

移动云计算安全度量是云计算安全中的一个研究领域,主要是研究采用手机等移动终端设备,通过移动互联网使用云计算服务过程中的安全问题及安全度量方法。本文分析了目前移动云计算行业发展过程中存在的安全问题,指出了这些安全问题是阻碍用户使用云计算服务的关键,分析了传统的安全度量方法在移动云计算中的应用的优缺点,并在此基础上提出了一种基于场景的移动云计算安全度量方法,该方法可以有效度量和展示用户正在使用的云计算服务的安全情况,可以解除用户对于安全的顾虑,让用户放心使用。     

移动云服务的数据安全与隐私保护综述

移动云服务相比传统云具有移动互联、灵活终端应用和便捷数据存取等特点。然而,丰富的移动云服务应用也带来了更多的安全与隐私泄露问题。在阐述移动云服务的基本概念、应用与安全问题的基础上,给出了其安全与隐私保护体系结构,主要围绕安全协议与认证、访问控制、完整性验证、移动可信计算和基于加密、匿名、混淆的隐私保护等关键技术,分析其研究现状,论述已有技术的优势和不足,并探讨了未来的研究方向。     

A Survey of Mobile Cloud Computing

Mobile Cloud Computing (MCC) is emerging as one of the most important branches of cloud computing. In this paper, MCC is defined as cloud computing extended by mobility, and a new ad-hoc infrastructure based on mobile devices. It provides mobile users with data storage and processing services on a cloud computing platform. Because mobile cloud computing is still in its infancy, we aim to clarify confusion that has arisen from different views. Existing works are reviewed, and an overview of recent advances in mobile cloud computing is provided. We investigate representative infrastructures of mobile cloud computing and analyze key components. Moreover, emerging MCC models and services are discussed, and challenging issues are identified that will need to be addressed in future work.     

Spotlight: the rise of the smart phone

Cell phones are everywhere, growing in both number and type. A smart phone is a next-generation, multifunctional cell phone that provides voice communication and text-messaging capabilities and facilitates data processing as well as enhanced wireless connectivity. Both the industry and academic research communities are working to resolve numerous issues, ranging from low-power hardware design, to flexible I/O methods, to location-sensing technologies, to mobile security issues. Nevertheless, with the deployment of 3G and Wi-Fi hotspots nationwide and the adoption of smart phones by the masses, we expect to see a spectrum of new services and applications targeting smart phone users that essentially mobilize people's daily lives and enterprise computing.     

移动互联网业务“云+端”架构的探索与实践

基于云计算技术提供移动互联网业务,是电信运营商在移动互联网时代提高竞争力,避免沦为单纯"管道"的重要手段。"云+端"架构,是实现移动互联网与云计算结合的一种可行的解决方案。介绍了"云+端"架构中云端与终端的具体结构以及基于"云+端"架构开发的云宝盒产品和世博e云手机,并提出了"云+端"架构的后续发展建议。     

基于3G手机的气象服务分析

为了使气象部门充分利用3G手机进行气象信息服务,对3G手机气象服务中经常采用的短信（彩信）、WAP、手机网站和手机软件4种方式,从交互性、传送及时性、视音频等方面进行了比较,并就当前手机信息推送方法的2种技术：短信推送和长连接进行了分析,结合公共气象服务的今后发展趋势,说明发送气象预警信息采用3G手机软件进行及时性传输是比较可行的。     

交通2.0——智慧交通的关键

基于"Web 2.0"、"City 2.0"、"政府2.0"等概念,提出了"交通2.0"概念,并建立了系统模型。该系统模型包括众筹数据和开放数据两个维度,众筹数据通过收集公众从智能手机、车载终端、Web 2.0网站上传的交通数据,获取现有检测系统不能提供的实时数据,并及时解决公众使用交通系统过程中发现的问题;开放数据通过开放公共数据,催化公众把开放的数据做出各种相互补充相互竞争的应用和服务,形成可持续的全面解决方案和创新的生态环境。该系统模型通过云计算、大数据处理、手机应用等技术做到了聚合众筹数据,提供开放数据以催化产生创新的交通应用和服务以完善现有交通设施和管理制度,并给将来的交通规划提供数据支撑和科学决策支持。智慧交通项目集成"交通2.0"后,实践表明奠定众筹数据和开放数据两个渠道,使公众能够积极地参与到交通生态链的完善和智慧化过程中来,是真正实现从"智能"到"智慧"的关键,是智慧交通系统产生活力的源泉。     

A novel data size-aware offloading technique for resource provisioning in mobile cloud computing

Mobile device users are involved in social networking, gaming, learning, and even some office work, so the end users expect mobile devices with high-response computing capacities, storage, and high battery power consumption. The data-intensive applications, such as text search, online gaming, and face recognition usage, have tremendously increased. With such high complex applications, there are many issues in mobile devices, namely, fast battery draining, limited power, low storage capacity, and increased energy consumption. The novelty of this work is to strike a balance between time and energy consumption of mobile devices while using data-intensive applications by finding the optimal offloading decisions. This paper proposes a novel efficient Data Size-Aware Offloading Model (DSAOM) for data-intensive applications and to predict the appropriate resource provider for dynamic resource allocation in mobile cloud computing. Based on the data size, the tasks are separated and gradually allocated to the appropriate resource providers for execution. The task is placed into the appropriate resource provider by considering the availability services in the fog nodes or the cloud. The tasks are split into smaller portions for execution in the neighbor fog nodes. To execute the task in the remote side, the offloading decision is made by using the min-cut algorithm by considering the monetary cost of the mobile device. This proposed system achieves low-latency time 13.2% and low response time 14.1% and minimizes 24% of the energy consumption over the existing model. Finally, according to experimental findings, this framework efficiently lowers energy use and improves performance for data-intensive demanding application activities, and the task offloading strategy is effective for intensive offloading requests.     

基于SCP模式的新型手机操作系统平台市场组织分析

在云产业背景下,智能手机市场日益成为焦点,新型手机操作系统平台作为智能手机的重要标识而备受瞩目。我国在发展此新兴市场中还处于起步和探索阶段。本文基于SCP模式分析目前新型手机操作系统平台的市场组织特征,并从市场结构、市场行为及市场绩效3方面总结我国发展相关市场存在的问题及市场策略建议,以及服务于云背景下的战略发展。     

手机病毒特点及防范对策

随着移动通讯业的飞速发展,黑客技术的不断成熟,以手机为攻击目标的手机病毒呈快速增长的趋势。文章从手机病毒的发展历史入手,着重介绍了手机病毒不同于一般PC病毒的特点,并对这些特点作了详细的分析,最后提出了有效的防范对策。文章阐述内容对手机病毒研究的深入开展友人们防范意识的增强具有一定的指导意义。     

移动互联网终端技术

文章基于移动互联网终端类型、主流智能操作系统、人机交互界面及热点应用等方面的技术进展,分析了当前主要的移动互联网终端技术。文章认为由于移动互联网终端在系统硬件技术、人机交互技术、操作系统技术、商业模式和应用开发上的跳跃性发展,将带动移动互联网终端以及移动互联网应用服务市场的高速扩张;云计算概念的出现、应用服务概念的推广将进一步推动移动互联网的快速发展,移动互联网终端市场亦将呈现繁荣景象。     

Prediction-based secured handover authentication for mobile cloud computing

Mobile cloud computing (MCC) is a new technology that brings cloud computing and mobile networks together. It enhances the quality of service delivered to mobile clients, network operators, and cloud providers. Security in MCC technology, particularly authentication during the handover process, is a big challenge. Current vertical handover authentication protocols encounter different problems such as undesirable delays in real-time applications, the man in the middle attack, and replay attack. In this paper, a new authentication protocol for heterogeneous IEEE 802.11/LTE-A mobile cloud networks are proposed. The proposed protocol is mainly based on the view of the 3GPP access network discovery and selection function, which uses the capacities given by the IEEE 802.11 and the 3GPP long term evolution-advanced (LTE-A) standards interconnection. A prediction scheme, with no additional load over the network, or the user is utilized to handle cloud computing issues arising during authentication in the handover process. The proposed handover authentication protocol outperformed existing protocols in terms of key confidentiality, powerful security, and efficiency which was used to reduce bandwidth consumption.

     

Cloud-assisted Computing for Event-driven Mobile Services

Today, software developers for desktop computing build request and respond applications to do what end users tell them to do and answer what they ask. In mobile computing, software developers will need to develop sense and response applications that will interact with the end user. These applications will notify or ask users what they want based on what they have sensed or on a personal profile. Mobile cloud computing has the potential to empower mobile users with capabilities not found in mobile devices, combining different and heterogeneous data sets. In this work, we discuss the importance and challenges in designing event-driven mobile services that will detect conditions of interest to users and notify them accordingly.     

Design and Development of Android Based Mobile Application for Specially Abled People

Technology has been advancing day by day and smart phones are providing challenges for the development of latest and sophisticated mobile applications. Talkback feature of Android makes it easy to access touch screen devices, but specially abled people are facing various problems in existing mobile applications. All mobile applications are not following the feature of Talkback and there is a lack of tactile feature. Considering these points, the present study is an attempt to develop a mobile application based on voice and gestures to provide communication services to specially abled people. The mobile application has been developed with the help of android studio and a special mobile case. The mobile case designed to help the beginners of developed mobile application. Color combination technique of green computing has been used to design the layout of mobile application for saving power. Four edge method has also been used in the designing part of mobile application’s layout to make it more accessible. The findings of the study revealed that the developed mobile application helps the end user to access features of mobile phone such as call, message, date, time etc. The developed mobile application assists the specially abled people having visual impairment or totally blind. The paper elaborates the design and development phase of mobile application in detail. Furthermore, applications of developed mobile applications have also been highlighted.

     

移动边缘计算安全研究

移动边缘计算具有靠近用户、业务本地处理、灵活路由等特点,成为满足5G低时延业务需求的关键技术之一。由于移动边缘计算靠近用户、处于相对不安全的环境、核心网控制能力减弱等,存在非授权访问、敏感数据泄露、(D)DoS攻击等安全风险。本文在介绍边缘计算概念、应用场景的基础上,分析移动边缘计算的安全威胁、安全防护框架、安全防护方案,并展望后续研究方向。