检索结果-内蒙古大学图书馆

7th International Conference on Cloud Computing and Services Science, CLOSER 2017

作者： De Fátima Pereira Marquesone, Rosangela Da Silva, Érico Augusto Gonzalez, Nelson Mimura Langona, Karen Goya, Walter Akio Redígolo, Fernando Frota De Brito Carvalho, Tereza Cristina Melo Mangs, Jan-Erik Sefidcon, Azimeh Laboratory of Computer Networks and Architecture Escola Politecnica University of São Paulo Brazil Ericsson Research Sweden

ISBN: (纸本)9789897582431

The continuous growth of data created by Internet-connected devices has been posing a challenge for mobile operators. The increase in the network traffic has exceeded the network capacity to efficiently provide services, specially for applications that require low latency. Edge computing is a concept that allows lowering the network traffic by using cloud-computing resources closer to the devices that either consume or generate data. Based on this concept, we designed an architecture that offers a mechanism to reduce bandwidth consumption. The proposed solution is capable of intercepting the data, redirecting it to a processing node that is allocated between the end device and the server, in order to apply features that reduce the amount of data on the network. The architecture has been validated through a prototype using video surveillance. This area of application was selected due to the high bandwidth requirement to transfer video data. Results show that in the best scenario is possible to obtain about 97% of bandwidth gain, which can improve the quality of services by offering better response times. ©2017 by SCITEPRESS - Science and Technology Publications, Lda. All rights reserved.

关键词： Fog computing

来源：评论

学校读者我要写书评

暂无评论

The CURUPIRA-2 block cipher for constrained platforms: Specification and benchmarking

The CURUPIRA-2 block cipher for constrained platforms: Speci...

引用

1st International Workshop on Privacy in Location-Based Applications, PiLBA 2008

作者： Simplicio Jr., Marcos Barreto, Paulo S. L. M. Carvalho, Tereza C. M. B. Margi, Cintia B. Naslund, Mats Laboratory of Computer Architecture and Networks PCS-EP University of São Paulo Brazil Ericsson Research-Stockholm Sweden

Privacy is a key concern in Location Based Applications (LBAs), especially due to their intensive use resource constrained devices in which general purpose ciphers are dificult to deploy. In this paper, we address this issue by specifying a new, faster key-schedule algorithm for the Curupira block cipher. This special-purpose cipher follows the Wide Trail Strategy (such as AES) and is tailored for resource-constrained platforms, such as sensors and mobile devices. Furthermore, we present our benchmark results for both the Curupira-1 (which adopts the original key-schedule specification) and the Curupira-2 (which adopts the new one) in appropriate testbeds.

关键词： Sensor networks

来源：评论

学校读者我要写书评

暂无评论

Metadata in digital video repositories: An analysis on author-generated metadata

Metadata in digital video repositories: An analysis on autho...

引用

2010 International Conference on Information Society, i-Society 2010

作者： Dantas, Joana Socrates Silveira, Regina Melo Ruggiero, Wilson Vicente LARC-Laboratory of Computer Architecture and Networks Department of Computer and Digital System Engineering Escola Politécnica da Universidade São Paulo Brazil

ISBN: (纸本)9780956426338

The growth of digital content generation and its access by the general public have, for the past few years, promoted the importance of resources' metadata, and enhanced the debate on their generation and quality. The improvement of new technologies and users needs have led to new metadata generation practices, which include the author-generated metadata. By studying the current literature on the subject we analyzed the author-generated metadata quality used on a given IPTV service. From the results of this study we propose an alternative methodology for insertion of metadata by the service user, where an auto-complete engine is applied aiming to enhance the system's metadata quality. © 2010 i-Society.

关键词： Metadata

来源：评论

学校读者我要写书评

暂无评论

Cluster-Based Interference-Free MAC Protocol with Load Aware in Software Defined VANET

引用

China Communications 2020年第12期17卷 217-234页

作者： Yangshui Gao Tao Luo Xinxin He Zhilong Zhang Beijing Laboratory of Advanced Information Networks Beijing University of Posts and TelecommunicationsBeijing 100876China Beijing Key Laboratory of Network System Architecture and Convergence Beijing University of Posts and TelecommunicationsBeijing 100876China School of Mathematics and Computer Dali UniversityDali 671003China

In order to reduce the interference,a novel,cluster-based medium access control(MAC)protocol with load aware for VANETs is proposed in this ***,all vehicles on roads are grouped into stable clusters in the light of their direction,number of neighbors,link reliability,and traffic *** utilizing the advantages of centralized control in software defined VANETs(SDVN),cluster stability can be maintained in ***,a contention-free MAC mechanism composed of inter-cluster multi-channel allocation and intra-cluster dynamic TDMA frame allocation is proposed to prevent co-channel interference and hidden terminal *** results show that the proposed protocol outperforms some existing protocols in cluster stability,delivery ratio,throughput and delay performance.

关键词： SDVN MAC co-channel interference non-safety services cluster

来源：评论

学校读者我要写书评

暂无评论

Cryptanalysis of dragon scheme

引用

The Journal of China Universities of Posts and Telecommunications 2010年第4期17卷 80-87页

作者： YUAN Feng HU Yu-pu WANG Yan OU Hai-wen Key Laboratory of Computer Networks and Information Security Ministry of Education Xidian University Xi'an 710071 China School of Science Xi'an University of Architecture and Technology Xi'an 710055 China Key Laboratory of Information Security Beijing Electronic Science and Technology Institute Beijing 100070 China

Patarin proposed the dragon scheme, pointed out the insecurity of the dragon algorithm with one hidden monomial and suggested a candidate dragon signature algorithm with a complicated function. This paper presents an algebraic method to attack the candidate dragon signature algorithm. The attack borrows the basic idea of the attack due to Kipnis and Shamir, and utilizes the underlying algebraic structure of the candidate dragon signature algorithm over the extension field to derive a way to enable the variable Y be viewed as a fixed value. The attack recovers the private keys efficiently when the parameters are n≤2s and D=[logq^d]≤3.

关键词： cryptography public key cryptography polynomials mapping multivariate dragon scheme algebraic method cryptanalysis

来源：评论

学校读者我要写书评

暂无评论

Joint Optimization of Latency and Energy Consumption for Mobile Edge Computing Based Proximity Detection in Road networks

引用

China Communications 2022年第4期19卷 274-290页

作者： Tongyu Zhao Yaqiong Liu Guochu Shou Xinwei Yao School of Information and Communication Engineering Beijing University of Posts and TelecommunicationsBeijing 100876China Beijing Laboratory of Advanced Information Networks Beijing Key Laboratory of Network System Architecture and ConvergenceBeijing 100876China School of Computer Science and Technology Zhejiang University of TechnologyChina

In recent years, artificial intelligence and automotive industry have developed rapidly, and autonomous driving has gradually become the focus of the industry. In road networks, the problem of proximity detection refers to detecting whether two moving objects are close to each other or not in real time. However, the battery life and computing capability of mobile devices are limited in the actual scene,which results in high latency and energy consumption. Therefore, it is a tough problem to determine the proximity relationship between mobile users with low latency and energy consumption. In this article, we aim at finding a tradeoff between latency and energy consumption. We formalize the computation offloading problem base on mobile edge computing(MEC)into a constrained multiobjective optimization problem(CMOP) and utilize NSGA-II to solve it. The simulation results demonstrate that NSGA-II can find the Pareto set, which reduces the latency and energy consumption effectively. In addition, a large number of solutions provided by the Pareto set give us more choices of the offloading decision according to the actual situation.

关键词： proximity detection mobile edge computing road networks constrained multiobjective optimization

来源：评论

学校读者我要写书评

暂无评论

Spectrum efficiency maximization with trajectory design in UAV-enabled mobile relaying

引用

The Journal of China Universities of Posts and Telecommunications 2019年第4期26卷 17-24页

作者： Sun Chuanzhi Hu Zhiqun Wen Xiangming Lu Zhaoming Qi Hang Beijing Laboratory of Advanced Information Networks Beijing University of Posts and TelecommunicationsBeijing 100876China Beijing Key Laboratory of Network System Architecture and Convergence Beijing University of Posts and TelecommunicationsBeijing 100876China School of Computer and Information Engineering Hubei UniversityWuhan 430062China

With the advantages of low cost and high mobility,unmanned aerial vehicles(UAVs)have played an important role in wireless *** investigate a UAV-enabled mobile relaying system,where a UAV is used as a mobile relay to assist in the communication from a ground source to a ground destination since their direct link is *** the conventional mobile relay in which the UAV adopts straight line or circular trajectory,we consider a more general elliptical trajectory and use realistic channel *** assuming that the UAV employs time-division duplexing(TDD)based decode-and-forward(DF)relaying,we jointly optimize the time allocations and the UAV trajectory to formulate the maximization of spectrum efficiency(SE).The simulation results show that the trajectory we designed achieves a higher SE than the optimal circular trajectory and static relaying.

关键词： UAV mobile relay time allocations elliptical trajectory

来源：评论

学校读者我要写书评

暂无评论

Recommendation system based on user profile extracted from an IMS network with emphasis on social network and digital TV

Recommendation system based on user profile extracted from a...

引用

6th IFIP/ACM Latin America Networking Conference, LANC 2011

作者： Rosa, Renata Lopes Rodríguez, Demóstenes Zegarra De Sousa Jr., Vicente Angelo Bressan, Graça Laboratory of Computer Networks and Architecture Escola Politécnica University of São Paulo Brazil Federal University of Natal Natal RGN Brazil

ISBN: (纸本)9781450308861

This paper introduces new network architecture capable of providing a flexible and configurable Recommendation System in which network operator, subscribers and content providers could interact to each other by message exchanging. This solution considers multiple inputs provided by the user and context-based information of IP Multimedia Subsystem (IMS) network. It creates a specific subscriber profile based on information from cellular and fixed networks, digital TV and, internet services as social networks or e-mail accounts. Also, for collecting information is used a Cell Broadcast platform which can send messages to a specific geographic location achieving users with high probability of similar preferences. User feedback is collected to evaluate the utility of recommendation messages. As additional features, the Recommendation System uses presence and location information as a decision factor to send or not the recommendation messages. © 2011 ACM.

关键词： Network architecture

来源：评论

学校读者我要写书评

暂无评论

A process for text recognition of generic identification documents over cloud computing

A process for text recognition of generic identification doc...

引用

2016 International Conference on Image Processing, computer Vision, and Pattern Recognition, IPCV 2016

作者： Valiente, Rodolfo Sadaike, Marcelo T. Gutiérrez, José C. Soriano, Daniel F. Bressan, Graça Ruggiero, Wilson V. Laboratory of Computer Architecture and Networks Escola Politénica da Universidade de São Paulo São Paulo SP Brazil

ISBN: (纸本)1601324421

- A process for accurate text recognition of generic identification documents (ID) over cloud computing is presented. It consists of two steps, first, a smartphone camera takes a picture of the ID, which is sent to a cloud server;second, the image is processed by the server and the results are sent back to the smartphone. In the cloud server, image rectification, text detections and word recognition methods are combined to extract all non-manuscript information from the ID. Rectification is based on an improved Hough Transform and the text detection approach consists of a contrast-enhanced Maximally Stable Extremal Region (MSER), using heuristics constraints to remove non-text regions. Experimental results demonstrate several advantages in the proposed process. © CSREA Press.

关键词： Cloud computing

来源：评论

学校读者我要写书评

暂无评论

Security analysis of projected C*- scheme

Security analysis of projected C*- scheme

引用

International Conference on Multimedia Information Networking and Security

作者： Yuan, Feng Hu, Yupu Wang, Yan Key Laboratory of Computer Networks and Information Security Xidian University Xi'an China School of Science Xi'an University of Architecture and Technology Xi'an China

ISBN: (纸本)9780769542584

This paper investigates the security of the projected C*- cryptographic scheme, and presents a method to attack the scheme. The basic idea of the attack is to utilize the affine part of the private keys and the weakness caused by the structure of the private key to find a number of linear equations. The attack can recover the private keys efficiently when the parameters are q ≤ 23, n ≤ 10 and s=1. © 2010 IEEE.

关键词： Public key cryptography

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：