共查询到20条相似文献，搜索用时 171 毫秒
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普适计算突破传统的桌面计算,实现了多维的、智能的、和谐友好的人机交互。该文简要介绍了普适计算的定义、特征和研究热点,在分析了远程教育存在的局限和不足基础上,论述了普适计算技术支持下的远程教育的特点。 相似文献
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利用PKI提出了一种新的公钥认证方案,该方案针对移动终端计算速度慢、存储量小的特点,本着尽量减少移动终端计算量、节省存储空间的原则,引入＂密钥短,安全性高＂的椭圆曲线密码体制进行加密和签名,并对加密和签名算法精心选择;采用归属方辅助证明的方法,使移动终端不传递和验证证书;移动终端和接入认证服务器之间以及各接入认证服务器间不需要预先存在安全关联;认证服务器间也不需要有相同的公钥参数,增强了系统的扩展性。 相似文献
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泛在学习是普适计算技术支持下的一种新的学习方式。在对普适计算、泛在学习等相关概念进行界定并对泛在学习特征进行总结的基础上,重点探究了普适计算技术支持下的泛在学习环境设计,以期为泛在学习相关研究提供一定的参考和借鉴。 相似文献
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普适计算在嵌入式系统设备中的应用 总被引：1，自引：0，他引：1
本文介绍了普适计算、嵌入式系统的概念以及普适计算在嵌入式设备中的特性,并根据嵌入式系统设备的特点和技术要求,阐明了普适计算应用于嵌入式系统设备中的相关原则。最后以智能GPS导游系统为例说明了普适计算在嵌入式系统应用中多方面的优势和发展前景。 相似文献
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本文主要介绍了普适技术,并介绍了运用普适技术、嵌入式系统在我国的中、小学教学过程中的应用,从而体现了该技术的产、学、研的结合,进一步实现了我国教育信息技术化的目标。该技术与课程的结合主要是通过自主开发以计算机、网络、移动技术为核心的普适教育服务系统．将多媒体技术、移动设备技术和网上社区技术支持下的中小学全科教学结合。本研究构建了一个新的自适应学习系统,一个个性化的学习管理系统。该系统扩展性强,可以用于其他的教学方面。 相似文献
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随着移动终端的性能不断增强,移动终端上的数据也将会变得多样而且海量,怎样才可以快速准确地定位到用户所想要的文件就成为了一个研究的热点。本文给出了适用于移动终端搜索使用的策略和方案。 相似文献
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智能移动终端、数据通讯线、GPS和管理软件是组成智能巡检系统的主要部分。这个系统需要巡检人员拿着智能移动终端,巡查规定的路线,在规定的时间内到达巡检地点,将巡检点利用智能移动终端读取出来,并且还应有声音的提示,巡检人员可以将巡检地点的事件状态设定出来,智能移动终端会自动记录到达目的地的时间、事件和巡检人员。本文对智能巡检系统在农村电网中的相关运用进行分析和研究。 相似文献
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移动互联网技术、移动终端技术的快速发展推动制造企业的经营管理方式向移动商务模式转变。根据制造企业自身组织关系、业务关系与业务流程的复杂性特点,分析移动互联网环境下促进制造企业现有商务模式变革的驱动因素,研究制造企业的移动经营管理模式,提出基于移动互联网的制造企业移动商务模式以及与ERP软件厂商、移动终端厂商、移动互联网运营商的合作策略。 相似文献
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《International Journal of Information Management》2016,36(5):784-792
The advancement in mobile technology and the introduction of cloud computing systems enable the use of educational materials on mobile devices for a location- and time-agnostic learning process. These educational materials are delivered in the form of data and compute-intensive multimedia-enabled learning objects. Given these constraints, the desired objective of mobile learning (m-learning) may not be achieved. Accordingly, a number of m-learning systems are being developed by the industry and academia to transform society into a pervasive educational institute. However, no guideline on the technical issues concerning the m-learning environment is available. In this study, we present a taxonomy of such technical issues that can impede the life cycle of multimedia-enabled m-learning applications. The taxonomy is devised based on the issues related to mobile device heterogeneity, network performance, content heterogeneity, content delivery, and user expectation. These issues are discussed, along with their causes and measures, to achieve solutions. Furthermore, we identify several trending areas through which the adaptability and acceptability of multimedia-enabled m-learning platforms can be increased. Finally, we discuss open challenges, such as low complexity encoding, data dependency, measurement and modeling, interoperability, and security as future research directions. 相似文献
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《Information processing & management》2023,60(1):103167
Federated Learning (FL) is a platform for smart healthcare systems that use wearables and other Internet of Things enabled devices. However, source inference attacks (SIAs) can infer the connection between physiological data in training datasets with FL clients and reveal the identities of participants to the attackers. We propose a comprehensive smart healthcare framework for sharing physiological data, named FRESH, that is based on FL and ring signature defense from the attacks. In FRESH, physiological data are collected from individuals by wearable devices. These data are processed by edge computing devices (e.g., mobile phones, tablet PCs) that train ML models using local data. The model parameters are uploaded by edge computing devices to the central server for joint training of FL models of disease prediction. In this procedure, certificateless ring signature is used to hide the source of parameter updates during joint training for FL to effectively resist SIAs. In the proposed ring signature schema, an improved batch verification algorithm is designed to leverage additivity of linear operations on elliptic curves and to help reduce the computing workload of the server. Experimental results demonstrate that FRESH effectively reduces the success rate of SIAs and the batch verification method significantly improves the efficiency of signature verification. FRESH can be applied to large scale smart healthcare systems with FL involving large numbers of users. 相似文献
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云计算技术正成为研究的新热点,移动数字图书馆可以借助云计算这一先进信息技术,开展云移动服务。文章在简述云计算和移动数字图书馆概念的基础上,构建了一种基于云计算的移动数字图书馆服务平台,并对构建模式及平台构建面临的问题进行了探讨。云计算技术与移动数字图书馆相辅相成,二者的结合将会给用户带来完美的服务感受。 相似文献
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伴随着以无线网络、3G技术等为代表的移动网络技术的飞速发展,基于手机、PDA等移动终端的移动云计算（MobileCloudComputing）逐渐受到研究者的关注。如何将移动云计算运用到远程移动学习中已成为当前教育研究的热点问题。在分析移动云计算优势的基础上,根据移动云计算的特．羔,设计了一个整合高性能计算（HPC）集群架构和校园Moodle的云计算远程移动学习平台。该平台能够充分发挥云计算的优势,降低远程教育成本,为我国远程教育的发展提供强有力的支撑。 相似文献
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我国数字图书馆网格研究综述 总被引：1，自引：0，他引：1
本文介绍了数字图书馆网格的概念、数字图书馆网格相关技术,包括嵌入式系统、普适计算、语义网格、知识网格。以及研究数字图书馆网格的研究领域。 相似文献
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《International Journal of Information Management》2016,36(2):183-191
Cloud computing is a pervasive computing paradigm that has revolutionized how computer infrastructure and services are delivered. Current research trends on cloud computing have been focused on the technology, applications, costs, benefits, and security of cloud computing at the organizational level within small and medium sized enterprises. Little research attention has been paid on adoption and usage of cloud computing at educational establishments and how contextual factors can influence diffusion and adoption of cloud computing. Universities in developing countries are faced with challenging socio-economic and political constraints that limit their ability to invest in expensive information systems to compete on the global stage. Using constructs from the diffusion of innovation theory and the technology acceptance model, this paper proposes a model that takes account of contextual, economic, and technological influences in the perception and adoption of cloud computing at universities in sub-Saharan Africa. Results from a pilot study, based on the model, through a survey of university lecturers and IS experts shows reliability and validity of the instrument and supports its usage for a more extensive study. Implications, potential contributions to research, and suggestions for future study are discussed. 相似文献
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The emergence of sophisticated and powerful mobile devices with impressive computing capabilities and storage capacity paves the way for an era of advanced mobile-based applications. Monitoring of time-critical data, process control, and security are possible candidate applications. In this work we propose a stock monitoring system that utilizes mobile phones. The system was designed to provide an alternative to costly GPRS connections for stock market traders. The system grants real-time monitoring of stock information through a user-friendly and easy to use GUI with plenty of useful features. The system was implemented by combining various Java technologies, specifically J2ME and J2EE. It was tested using the Dubai Financial Market with favorable results. 相似文献