云计算在个人数字图书馆中的研究与应用

本文分析了云计算在信息资源共享中的优势,将云计算应用到个人图书馆信息资源共享中去,提出了个人图书馆信息资源共享服务平台的框架,利用此平台,可以提高资源共享的效率,方便用户的使用,降低用户的成本。     

网络综合资源数据的共享与统一调度平台的设计和实现

中国移动通信集团公司广西分公司(以下简称广西移动)网络综合资源管理系统(IRMS)通过建立跨专业、面向客户的网络资源模型,形成全网资源数据的共享核心数据库。本文提出一种基于综合资源数据的信息交换接口标准和交换规范,利用统一调度管理模式实现资源数据、业务数据的数据交换平台,从而实现对全专业网络资源和信息服务资源在异构系统之间的共享。     

Kubernetes容器云平台多租户方案研究与设计

在容器云平台中,租户共享底层的计算、存储、网络等资源,存在租户容器运行和数据安全问题。分析了 Kubernetes 访问控制和资源隔离实现方案基础上,提出了一种基于多租户访问控制模型的容器云平台多租户方案,涵盖多租户管理模型、多租户访问控制、计算资源隔离和网络资源隔离等,可切实提升基于Kubernetes的容器云平台的资源隔离能力,有效降低数据安全隐患。     

Efficient Resource Allocation for Policy-Based Wireless/Wireline Interworking

This paper proposes efficient resource allocation techniques for a policy-based wireless/wireline interworking architecture, where quality of service (QoS) provisioning and resource allocation is driven by the service level agreement (SLA). For end-to-end IP QoS delivery, each wireless access domain can independently choose its internal resource management policies to guarantee the customer access SLA (CASLA), while the border-crossing traffic is served by a core network following policy rules to meet the transit domain SLA (TRSLA). Particularly, we propose an engineered priority resource sharing scheme for a voice/data integrated wireless domain, where the policy rules allow cellular-only access or cellular/WLAN interworked access. By such a resource sharing scheme, the CASLA for each service class is met with efficient resource utilization, and the interdomain TRSLA bandwidth requirement can be easily determined. In the transit domain, the traffic load fluctuation from upstream access domains is tackled by an inter-TRSLA resource sharing technique, where the spare capacity from underloaded TRSLAs can be exploited by the overloaded TRSLAs to improve resource utilization. Advantages of the inter-SLA resource sharing technique are that the core network service provider can freely design the policy rules that define underload and overload status, determine the bandwidth reservation, and distribute the spare resources among bandwidth borrowers, while all the policies are supported by a common set of resource allocation techniques.     

基于Web的教育信息化平台建设与架构设计

为提高教育信息化建设水平,加快教育现代化的进程,通过对教育信息化建设与应用现状分析,阐述了目前在教育信息化建设方面所面临的问题,实现了一种基于Web的教育信息化平台。与传统的教育网站相比,该方案综合资源平台,结合学校、教师、学生、家长等受众群体,重点研究了教育信息化建设网＂门户内容管理平台＂功能需求、方案的总体结构、系...     

校园学生资源共享平台设计与实现

随着高校教育信息化的快速发展,为提高学习信息资源的利用率,充分发挥网络信息共享资源在高校中的作用,使用Struts作为系统的整体基础架构,负责MVC的分离,在Struts框架的模型部分,利用Hibernate框架对持久层提供支持,业务层用Spring支持,设计并实现了校园学生资源共享平台,改善现存的资源共享访问瓶颈,为校园信息资源共享提供良好的服务。     

融合的蜂窝网络/无线局域网中资源管理的性能分析

Wireless Local Area Network (WLAN) with high data bit rates can be used with cellular network to achieve higher level of Quality of Service (QoS) by sharing their total resources efficiently. The integration between cellular and WLAN networks should be ensured considering different channel allocation strategies of both networks and efficient resource management techniques should be developed. In this paper, we propose a new call admission scheme to use the coupled resource effectively. The proposed scheme, by taking the different resource sharing strategies for two access networks, limits the new, horizontal and vertical handoff voice and data call arrivals with respect to their call level QoS requirements. Numerical results show that the proposed integrated cellular/WLAN network model uses the resources more effectively and achieves all upper bound QoS requirements for voice and data users as compared with the non integrated network model.     

信息网格平台资源访问方式的测试与研究

信息网格系统是利用网格思路和技术实现信息资源的共享、管理和提供信息服务的系统。本文结合信息网格系统在实现企业信息共享中的研究和实施工作，分析了信息网格平台传递消息的两种机制：基于JDBC和利用SOAP协议传送，对两种机制下的响应时间进行了对比测试，并进行了初步的研究，为系统分析和系统的进一步改进提供了指导。     

网格技术在视频会议系统中的应用初探

网格(Grid)是近年来兴起的一个研究热点。他旨在使互联网上所有资源(计算资源、存储资源、通信资源、软件资源、信息资源、知识资源等)实现全面共享与协同工作，使整个因特网整合成一台巨大的超级计算机，为用户提供一个有效的平台，支持全球范围内分布异构应用程序的运行。本文不仅介绍了网格技术的涵义、特．最、功能，并且从网格技术能支持异构结点在网络环境下的分布动态协同工作的角度出发，给出了基于网格平台的通用视频会议系统的设计构想。     

面向领域的信息资源检索研究与应用

本文针对现在各类信息资源库的大量存在,且重复度高、不易管理,导致检索的查准率和查全率较低的现状,提出了根据领域特点对信息资源进行检索的技术,通过自动对资源进行分类,将各类信息资源单独进行管理,形成领域库、资源库及其管理平台的资源管理架构,动态调整资源分类,以此为多种不同领域资源库提供信息检索和信息资源服务。     

Call admission control in wideband CDMA cellular networks by using fuzzy logic

In this paper, a novel call admission control (CAC) scheme using fuzzy logic is proposed for the reverse link transmission in wideband code division multiple access (CDMA) cellular communications. The fuzzy CAC scheme first estimates the effective bandwidths of the call request from a mobile station (MS) and its mobility information, then makes a decision to accept or reject the connection request based on the estimation and system resource availability. Numerical results are given to demonstrate the effectiveness of the proposed fuzzy CAC scheme in terms of new call blocking probability/handoff call dropping probability, outage probability, and resource utilization.     

Efficient and secure business model for content centric network using elliptic curve cryptography

Initially, Internet has evolved as a resource sharing model where resources are identified by IP addresses. However, with rapid technological advancement, resources/hardware has become cheap and thus, the need of sharing hardware over Internet is reduced. Moreover, people are using Internet mainly for information exchange and hence, Internet has gradually shifted from resource sharing to information sharing model. To meet the recent growing demand of information exchange, Content Centric Network (CCN) is envisaged as a clean‐slate future network architecture which is specially destined for smooth content distribution over Internet. In CCN, content is easily made available using network caching mechanism which is misaligned with the existing business policy of content providers/publishers in IP‐based Internet. Hence, the transition from contemporary IP‐based Internet to CCN demands attention for redesigning the business policy of the content publishers/providers. In this paper, we have proposed efficient and secure communication protocols for flexible CCN business model to protect the existing business policies of the content publisher while maintaining the salient CCN features like in‐network content caching and Interest packet aggregation. To enhance the efficiency and security, the Elliptic Curve Cryptography (ECC) is used. The proposed ECC‐based scheme is analyzed to show that it is resilient to relevant existing cryptographic attacks. The performance analysis in terms of less computation and communication overheads and increased efficiency is given. Moreover, a formal security verification of the proposed scheme is done using widely used AVISPA simulator and BAN logic that shows our scheme is well secured.     

An efficient resource allocation to improve QoS of 5G slicing networks using general processor sharing‐based scheduling algorithm

Fifth generation (5G) slicing is an emerging technology for software‐defined networking/network function virtualization–enabled mobile networks. Improving the utilization and throughput to meet the quality of service (QoS) requirements of 5G slicing is very important for the operators of mobile networks. With growing data traffic from different applications of numerous smart mobile devices having several QoS requirements, we expect networks to face problems of congestion and overload that prevent the effective functioning of a radio access network (RAN). This paper proposes a more effective packet‐based scheduling scheme for data traffic by 5G slicing with two operation modes for improving the resource utilization of 5G cloud RAN and providing an efficient isolation of the 5G slices. These two operation modes are referred to as static sharing resource (SSR) scheme and dynamic sharing resources (DSR) scheme. The SSR scheme is a modified version of an existing method. The goal of this approach is to reallocate the shared available resources of 5G network fairly and maximize the utilization of bandwidth while protecting a 5G slice from overwhelming other 5G slices. Throughput and delays of the system model are also discussed to show its performance limits. On the basis of the simulation outcomes, we observed that the proposed DSR scheme outperforms the SSR scheme in terms of provided delay and throughput. In addition, the token bucket parameters together with the assigned capacity weight for each slice can be selected and configured based on the required QoS. Finally, a good estimate for the maximum delay bounds of the slices is provided by the derived theoretical delay bound.     

基于机器学习的计算机教学资源共享模型设计

为提升计算机科学教育中教学资源的管理效率和使用效果,文中基于机器学习方法,设计并实现了一个计算机教学资源共享模型,探讨了机器学习技术在优化资源分类、个性化推荐、用户行为分析等方面的应用。结果表明,该模型不仅显著提高了资源的可访问性和个性化体验,还通过数据分析增强了教育资源的整体管理效率,为计算机科学教育的资源共享提供了一种创新和有效的解决方案。     

基于SONY蓝光存储技术实现全台网络化

随着电视台的网络化建设步伐越来越快,各个节目业务板块都在电视台的内部不断出现,而要实现各业务板块系统的信息数据资源的互联互通,同时各板块之间相互独立,就要建立主干交换平台中心,实现全台资源共享网络化。介绍一种新型的交互共享平台中心——基于SONY蓝光存储技术实现台内各业务板块资源共享网络化,适合中小型电视台应用。     

Transparent resource sharing framework for internet services on handheld devices

Handheld devices have limited processing power and a short battery lifetime. As a result, computationally intensive applications cannot run appropriately or cause the device to run out of battery too early. Additionally, Internet-based service providers targeting these mobile devices lack information to estimate the remaining battery autonomy and have no view on the availability of idle resources in the neighborhood of the handheld device. These battery-related issues create an opportunity for Internet providers to broaden their role and start managing energy aspects of battery-driven mobile devices inside the home. In this paper, we propose an energy-aware resource-sharing framework that enables Internet access providers to delegate (a part of) a client application from a handheld device to idle resources in the LAN, in a transparent way for the end-user. The key component is the resource sharing service, hosted on the LAN gateway, which can be remotely queried and managed by the Internet access provider. The service includes a battery model to predict the remaining battery lifetime. We describe the concept of resource-sharing-as-a-service that allows users of handheld devices to subscribe to the resource sharing service. In a proof-of-concept, we evaluate the delay to offload a client application to an idle computer and study the impact on battery autonomy as a function of the CPU cycles that can be offloaded.     

基于区块链技术的电子数据证据共享平台研究

针对现有电子数据证据在公检法部门、司法鉴定机构线下流转过程中易丢失、难查询、难以保证唯一性和完整性等问题,提出一种基于区块链技术的电子数据证据共享平台技术实现方案。该平台融合了区块链技术、网络可信身份认证、可信时间、加密电子数据证据存取证管理等技术,解决了电子数据证据使用过程中因易伪造、易篡改难以保证真实性,司法鉴定中认定难、采信率低,公检法共享使用难的问题。通过该平台有效地实现电子数据证据在司法部门之间的线上流转,确保了电子数据证据的安全保护与高效共享。     

Energy‐efficient resource allocation in D2D communications for energy harvesting–enabled NOMA‐based cellular networks

In this paper, we propose an energy‐efficient power control and harvesting time scheduling scheme for resource allocation of the subchannels in a nonorthogonal multiple access (NOMA)–based device‐to‐device (D2D) communications in cellular networks. In these networks, D2D users can communicate by sharing the radio resources assigned to cellular users (CUs). Device‐to‐device users harvest energy from the base station (BS) in the downlink and transmit information to their receivers. Using NOMA, more than one user can access the same frequency‐time resource simultaneously, and the signals of the multiusers can be separated successfully using successive interference cancellation (SIC). In fact, NOMA, unlike orthogonal multiple access (OMA) methods, allows sharing the same frequency resources at the same time by implementing adaptive power allocation. Our aim is to maximize the energy efficiency of the D2D pairs, which is the ratio of the achievable throughput of the D2D pairs to their energy consumption by allocating the proper subchannel of each cell to each device user equipment (DUE), managing their transmission power, and setting the harvesting and transmission time. The constraints of the problem are the quality of service of the CUs, minimum required throughput of the subchannels, and energy harvesting of DUEs. We formulate the problem and propose a low‐complexity iterative algorithm on the basis of the convex optimization method and Karush‐Kuhn‐Tucker conditions to obtain the optimal solution of the problem. Simulation results validate the performance of our proposed algorithm for different values of the system parameters.     

Joint wireless and optical resources allocation for availability-guaranteed service in survivable fiber-wireless access network

The fiber-wireless (FIWi) access network not only leverages the technical merits of wireless and optical access networks, but also provides a potential opportunity for the design of survivable access networks. Previous works have studied the survivability of FiWi access network against network component failure by means of backup fiber deployment and wireless rerouting. However, most of these works put less attention on the connection availability and ignore the joint allocation of wireless and optical resources, which plays an important role in improving the global network performance gain. In this paper, we consider a notable failure scenario in FiWi access network but less mentioned in previous works, i.e., single shared-risk link group failure. We first propose a model for FiWi network to estimate the connection availability of service demand. Then, a novel resource allocation approach is proposed to provide the availability-guaranteed service. Under the requirements of bandwidth and connection availability, we deal with the optimal allocation of joint wireless and optical resources with the objective of minimum resource consumption. Numerical results demonstrate that the proposed scheme can reduce the resource consumption significantly compared to the resource allocation without considering connection availability.     

基于moodle技术的外语课程资源平台设计与研究

本文对高校外语课程信息化资源的建设进行了分析,对外语课程资源平台建设的需求进行了分析,结合moodle技术在网络教学资源系统中的应用,提出了基于moodle技术的外语课程资源平台设计方案并进行了研究.