发布求助
文献互助 智能选刊 最新文献

Journal of China Universities of Posts and Telecommunications最新文献

筛选
英文 中文
Study on the influences of system parameters on bound self-similar pulse pairs in a passively mode-locked fiber laser 被动锁模光纤激光器中系统参数对束缚自相似脉冲对影响的研究
Journal of China Universities of Posts and Telecommunications Pub Date : 2013-12-01 DOI: 10.1016/S1005-8885(13)60204-6
Ge WU , Bo GAO , Xiao-jian TIAN
{"title":"Study on the influences of system parameters on bound self-similar pulse pairs in a passively mode-locked fiber laser","authors":"Ge WU ,&nbsp;Bo GAO ,&nbsp;Xiao-jian TIAN","doi":"10.1016/S1005-8885(13)60204-6","DOIUrl":"10.1016/S1005-8885(13)60204-6","url":null,"abstract":"<div><p>This paper is devoted to research the characteristics of the bound self-similar pulses formed in a passively mode-locked Yb-doped fiber laser. The parabolic shape bound self-similar pulses with linear chirps are observed in the fiber laser. The influences of the small signal gain and the inter-cavity average group velocity dispersion (GVD) on pulse separation, pulse duration, peak power and single pulse energy of the bound self-similar pulse pairs are investigated in-depth. The simulation results contribute to the study of the stable transmission of bound state pulses.</p></div>","PeriodicalId":35359,"journal":{"name":"Journal of China Universities of Posts and Telecommunications","volume":"20 ","pages":"Pages 147-151"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1005-8885(13)60204-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90182570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Analysis on the risk of personal cloud computing based on the cloud industry chain 基于云产业链的个人云计算风险分析
Journal of China Universities of Posts and Telecommunications Pub Date : 2013-12-01 DOI: 10.1016/S1005-8885(13)60211-3
Xue-mei XIE, Yu-xi ZHAO
{"title":"Analysis on the risk of personal cloud computing based on the cloud industry chain","authors":"Xue-mei XIE,&nbsp;Yu-xi ZHAO","doi":"10.1016/S1005-8885(13)60211-3","DOIUrl":"10.1016/S1005-8885(13)60211-3","url":null,"abstract":"<div><p>This paper reviews the literature about cloud computing, and establishes a framework for industry chain of personal cloud computing which is based on the current cloud industry chain in China. Then it summarizes the potential risks of personal cloud from the angle of user perception, including risk identification, qualitative evaluation, and risk handling strategy. Finally, according to the existing related policy or regulation scheme, this paper proposes some suggestions and optimization strategies about the personal cloud computing.</p></div>","PeriodicalId":35359,"journal":{"name":"Journal of China Universities of Posts and Telecommunications","volume":"20 ","pages":"Pages 105-112"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1005-8885(13)60211-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84625667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Construction and implementation of ‘classic reading’ innovation platform “经典阅读”创新平台的建设与实施
Journal of China Universities of Posts and Telecommunications Pub Date : 2013-12-01 DOI: 10.1016/S1005-8885(13)60207-1
Xu WU , Jin XU , Xia-qing XIE , Xue-bin GAO
{"title":"Construction and implementation of ‘classic reading’ innovation platform","authors":"Xu WU ,&nbsp;Jin XU ,&nbsp;Xia-qing XIE ,&nbsp;Xue-bin GAO","doi":"10.1016/S1005-8885(13)60207-1","DOIUrl":"10.1016/S1005-8885(13)60207-1","url":null,"abstract":"<div><p>In order to effectively promote classic reading and guide students to read classics recommended by scholars, this paper constructs an innovation platform of ‘Classic Reading’ teaching system based on reading credit. According to the requirements of innovation, teaching reformation and actual needs of students, this innovation platform designs five modules, including user security-login module, book management module, reading-report module, system management module and teaching activities module. For the online part, this platform implements the ‘Happy Reading’ network teaching platform, including user security-login through electronic identity (eID), visualization of book information, online writing, submission, reviewing, publishing and socializing comments of reading-report, statistical analysis and other practical functions. Offline, the platform continuously optimizes book list to ensure the quality of classic reading, and sets reviewing standards to ensure the quality of reading-reports. In the meanwhile, with the help of students' organizations, the platform carries out activities like ‘Readers Sloan’, ‘Reading Star’ and many other colorful activities. The combination of online and offline parts provides a reliable, convenient, interactive and efficient teaching system. It has been proved that this platform has significantly improved teaching quality and efficiency, and enhanced students' comprehensive quality, especially for students in science and engineering colleges.</p></div>","PeriodicalId":35359,"journal":{"name":"Journal of China Universities of Posts and Telecommunications","volume":"20 ","pages":"Pages 128-135"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1005-8885(13)60207-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85950634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Study and application of semantic-based image retrieval 基于语义的图像检索研究与应用
Journal of China Universities of Posts and Telecommunications Pub Date : 2013-12-01 DOI: 10.1016/S1005-8885(13)60209-5
Xia-qing XIE , Quan-wei BAI , Lei HOU , Xu WU
{"title":"Study and application of semantic-based image retrieval","authors":"Xia-qing XIE ,&nbsp;Quan-wei BAI ,&nbsp;Lei HOU ,&nbsp;Xu WU","doi":"10.1016/S1005-8885(13)60209-5","DOIUrl":"10.1016/S1005-8885(13)60209-5","url":null,"abstract":"<div><p>Image retrieval is increasingly necessary for multi-media resources to improve user experiences and expand retrieval approach. This paper studies into recent process made in semantic-based image retrieval (SBIR), and establishes a semantic-based image retrieval model (SBIRM) for ‘Classic Reading’ Platform. The model chooses three important features from illustrations of books including color, texture and shape to extract feature vector and form a 31-dimentional vector. Vector normalization is performed to eliminate the difference between different features and similarity measurement is used to compare two images. Finally, K-nearest neighbor (KNN) was performed to train the image vectors to decide which book the given image belongs to. The experimental result shows that the precision of this model can be more than 90%.</p></div>","PeriodicalId":35359,"journal":{"name":"Journal of China Universities of Posts and Telecommunications","volume":"20 ","pages":"Pages 136-142"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1005-8885(13)60209-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82345567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
The quasi-stationary platform of stratospheric ISAR imaging 平流层ISAR成像准静止平台
Journal of China Universities of Posts and Telecommunications Pub Date : 2013-12-01 DOI: 10.1016/S1005-8885(13)60202-2
Zhao-qun QI, Yi JING, Si-qing YOU, Hai-bin SUN
{"title":"The quasi-stationary platform of stratospheric ISAR imaging","authors":"Zhao-qun QI,&nbsp;Yi JING,&nbsp;Si-qing YOU,&nbsp;Hai-bin SUN","doi":"10.1016/S1005-8885(13)60202-2","DOIUrl":"10.1016/S1005-8885(13)60202-2","url":null,"abstract":"<div><p>Compared with the ground-base, the stratosphere for inverse synthetic aperture radar (ISAR) system has more advantages. However, one problem of the Stratospheric ISAR system is platform drifting, which brings the phase interference to echo signal. Considering this problem, firstly parameter estimation (PE) method is applied in the stratosphere ISAR system to compensate for the phase error along the down-range due to the platform drifting. The effectiveness and validity of the algorithm are proved by simulation results.</p></div>","PeriodicalId":35359,"journal":{"name":"Journal of China Universities of Posts and Telecommunications","volume":"20 ","pages":"Pages 156-160"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1005-8885(13)60202-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77563192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Enhanced mutual authentication model of IoT 增强的物联网相互认证模型
Journal of China Universities of Posts and Telecommunications Pub Date : 2013-12-01 DOI: 10.1016/S1005-8885(13)60218-6
Jin-cui YANG , Hao PANG , Xin ZHANG
{"title":"Enhanced mutual authentication model of IoT","authors":"Jin-cui YANG ,&nbsp;Hao PANG ,&nbsp;Xin ZHANG","doi":"10.1016/S1005-8885(13)60218-6","DOIUrl":"10.1016/S1005-8885(13)60218-6","url":null,"abstract":"<div><p>The authentication mechanism of the Internet of things (IoT) control system is an important research field. This paper aims to give an appropriate authentication mechanism of IoT control system. It analyzes the pros and cons of some existing authentication mechanisms, proposes an enhanced bi-direction authentication mechanism for IoT control system, discusess the proposed mechanism in detail, including the improvements measures, the authentication process and the authentication model. Finally, this paper presents the security analysis of the enhanced authentication model. Analysis results indicate that the model is a relatively feasible security authentication model for the IoT control system.</p></div>","PeriodicalId":35359,"journal":{"name":"Journal of China Universities of Posts and Telecommunications","volume":"20 ","pages":"Pages 69-74"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1005-8885(13)60218-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90442800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 16
Novel jagged-shaped ultra-wideband antenna 新型锯齿状超宽带天线
Journal of China Universities of Posts and Telecommunications Pub Date : 2013-12-01 DOI: 10.1016/S1005-8885(13)60214-9
Xi CAO , Bo GAO , Ge WU , Xiao-jian TIAN
{"title":"Novel jagged-shaped ultra-wideband antenna","authors":"Xi CAO ,&nbsp;Bo GAO ,&nbsp;Ge WU ,&nbsp;Xiao-jian TIAN","doi":"10.1016/S1005-8885(13)60214-9","DOIUrl":"10.1016/S1005-8885(13)60214-9","url":null,"abstract":"<div><p>In this article, we introduce a novel antenna with jagged-shaped patch and fed by a coplanar waveguide(CPW). This article also shows two-order optimization of patch and ground plane optimization. The size of the substrate is 30 mm× 26 mm× 0.8 mm and the substrate material uses RT5880 with relative permitivity of 2.b The simulations and experimental results demonstrate that the impedance bandwidth of antenna can be achieved from 2.2 GHz to 10 GHz. The antenna can be widely used in ultra-wideband (UWB) system.</p></div>","PeriodicalId":35359,"journal":{"name":"Journal of China Universities of Posts and Telecommunications","volume":"20 ","pages":"Pages 92-94"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1005-8885(13)60214-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79865780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Offline traffic analysis system based on Hadoop 基于Hadoop的离线流量分析系统
Journal of China Universities of Posts and Telecommunications Pub Date : 2013-10-01 DOI: 10.1016/S1005-8885(13)60096-5
Yuan-yuan QIAO , Zhen-ming LEI , Lun YUAN , Min-jie GUO
{"title":"Offline traffic analysis system based on Hadoop","authors":"Yuan-yuan QIAO ,&nbsp;Zhen-ming LEI ,&nbsp;Lun YUAN ,&nbsp;Min-jie GUO","doi":"10.1016/S1005-8885(13)60096-5","DOIUrl":"https://doi.org/10.1016/S1005-8885(13)60096-5","url":null,"abstract":"<div><p>Offline network traffic analysis is very important for an in-depth study upon the understanding of network conditions and characteristics, such as user behavior and abnormal traffic. With the rapid growth of the amount of information on the Internet, the traditional stand-alone analysis tools face great challenges in storage capacity and computing efficiency, but which is the advantages for Hadoop cluster. In this paper, we designed an offline traffic analysis system based on Hadoop (OTASH), and proposed a MapReduce-based algorithm for Top<em>N</em> user statistics. In addition, we studied the computing performance and failure tolerance in OTASH. From the experiments we drew the conclusion that OTASH is suitable for handling large amounts of flow data, and are competent to calculate in the case of single node failure.</p></div>","PeriodicalId":35359,"journal":{"name":"Journal of China Universities of Posts and Telecommunications","volume":"20 5","pages":"Pages 97-103"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1005-8885(13)60096-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72231844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 14
Predicting the scale of information diffusion in social network services 预测社交网络服务中的信息扩散规模
Journal of China Universities of Posts and Telecommunications Pub Date : 2013-08-01 DOI: 10.1016/S1005-8885(13)60239-3
Zheng-ren LI, Ting-jie LÜ, Wen-hua SHI, Xiao-hang ZHANG
{"title":"Predicting the scale of information diffusion in social network services","authors":"Zheng-ren LI,&nbsp;Ting-jie LÜ,&nbsp;Wen-hua SHI,&nbsp;Xiao-hang ZHANG","doi":"10.1016/S1005-8885(13)60239-3","DOIUrl":"10.1016/S1005-8885(13)60239-3","url":null,"abstract":"<div><p>Predicting the scale of information diffusion is an important task for many social network services (SNS) operators and enterprises. In this paper, the authors investigate the effects of two types of indicators, user attributes and social network attributes, and study on the accuracy of predicting the scale of information diffusion, and how to select an appropriate model that can fit real data better and have a higher accuracy. The experimental results show that both user attributes and social network structure attributes have significant effects on the scale of information diffusion. At the same time, three data mining models are constructed in this paper to predict the scale of information diffusion and compare their prediction accuracy. It is found that neural network model performs much better than decision tree and linear regression do.</p></div>","PeriodicalId":35359,"journal":{"name":"Journal of China Universities of Posts and Telecommunications","volume":"20 ","pages":"Pages 100-104"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1005-8885(13)60239-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74621117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Evaluation research for Internet users/services attributes extraction and classification 互联网用户/服务属性提取与分类评价研究
Journal of China Universities of Posts and Telecommunications Pub Date : 2013-08-01 DOI: 10.1016/S1005-8885(13)60243-5
Jian-feng GUAN , Yu DAI , Meng ZHANG , Wei QUAN , Chang-qiao XU , Hong-ke ZHANG
{"title":"Evaluation research for Internet users/services attributes extraction and classification","authors":"Jian-feng GUAN ,&nbsp;Yu DAI ,&nbsp;Meng ZHANG ,&nbsp;Wei QUAN ,&nbsp;Chang-qiao XU ,&nbsp;Hong-ke ZHANG","doi":"10.1016/S1005-8885(13)60243-5","DOIUrl":"10.1016/S1005-8885(13)60243-5","url":null,"abstract":"<div><p>Internet has been changing communications and social network of human beings during the past years due to its convenience. The number of Internet users and services are increasing incredibly with the development of various networking technologies, but at the same time these cause the difficulty of managing the network and providing better user experience. User/service classification can alleviate this problem. A thorough evaluation system can not only assess the performance of the classification models, but also improve them significantly. In this paper, we build a new kind of user/service classification model and propose an evaluation system. Taking diverse viewpoints into account and ensuring the evaluating results to be as complete and unbiased as possible, we design a multi-layer and multi-dimensionality assessment architecture. This architecture includes reliability, validity, flexibility, efficiency and cost. We believe our evaluation system could behave better and come up with a more overall and scientific consequence when it comes to the specific classification model.</p></div>","PeriodicalId":35359,"journal":{"name":"Journal of China Universities of Posts and Telecommunications","volume":"20 ","pages":"Pages 81-85"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1005-8885(13)60243-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73590823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信