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BISTRO: BitTorrent Based on Space-Time Trade-Off

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Communications and Network 2013年第3期5卷 618-624页

作者： Roanna Lun Ye Zhu huirong fu Department of Computer Science and Engineering Oakland University Rochester USA Departmentof Electrical and Computer Engineering Cleveland State University Cleveland USA

Due to the content bundling and the dramatic increase of content size, the download performance in peer-to-peer networks has become a research focus again recently. In this paper, we propose a novel approach to improve the download performance based on the classical space-time trade-off. With the approach, a peer can speed up local downloads in peer-to-peer networks by contributing a portion of local hard disks for the content distribution in peer-to-peer networks. The contribution can bring performance improvement to each peer following the approach and in the meantime improve the overall content distribution performance in a peer-to-peer network. Based on the approach, we propose BISTRO, a BitTorrent based on space-time trade-off. The BISTRO is compatible with the vanilla BitTorrent. Our extensive experiments show that BISTRO can significantly reduce the download time.

关键词： Peer-to-Peer Networking BitTorrent

Leveraging 3D Benefits for Authentication

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International Journal of Communications, Network and System Sciences 2017年第8期10卷 324-338页

作者： Jonathan Gurary Ye Zhu huirong fu Department of Electrical and Computer Engineering Cleveland OH USA Department of Computer Science Oakland University Oakland MI USA

Devices with 3D capabilities are quickly gaining in popularity. In this paper, we propose to bring authentication into the third dimension. We define the concept of a 3D authentication scheme based on physical and psychological advantages of 3D. We implement an example of 3D authentication: 3DPass, to demonstrate the superiority of the 3D approach. Our security analysis of 3DPass demonstrates that 3DPass can exceed the password space of an 8 character alphanumeric password with just 6 choices. Our user study finds that 3DPass has superior memorability versus traditional alphanumeric passwords: 98% vs 83% recall rates after one week. We find that passwords in our scheme can be entered in 21 seconds on average when used with the Oculus Rift. We find that using the Oculus Rift improves entry time compared to a traditional 2D display, despite having no impact on presence (the feeling of “being there”) or user preference.

关键词： Authentication Virtual Reality 3D

Evaluating Throughput and Delay in 3G and 4G Mobile Architectures

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Journal of Computer and Communications 2014年第10期2卷 1-8页

作者： Eralda Caushaj Ivan Ivanov huirong fu Ishwar Sethi Ye Zhu Cleveland State University Cleveland USA Empire State College State University of New York New York USA Oakland University Rochester Hills USA

All mobile carriers these days have provided 3G and 4G services to their customers. The evolution of cellular networks from 3G to 4G has improved several performance metrics of the data communications. The focus of this paper is to evaluate two of the most important performance metrics: throughput and delay. We consider the cellular network as an integrate infrastructure that includes mobile and fixed nodes. Based on this model we calculate and analyze the throughput and delay. Our results illustrate that the throughput is increased while the delay is decreased in 4G data network compared to the previous 3G architecture. In addition, we evaluate how the delay affects the security of the network.

关键词： Network Throughput Delay Architecture Graph

Ambiguous Multi-Symmetric Scheme and Applications

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Journal of Information Security 2017年第4期8卷 383-401页

作者： Richard Bassous Ahmad Mansour Roger Bassous huirong fu Ye Zhu George Corser Oakland University Rochester MI USA Cleveland State University Cleveland OH USA Saginaw Valley State University Saginaw MI USA

This paper introduces and evaluates the performance of a novel cipher scheme, Ambiguous Multi-Symmetric Cryptography (AMSC), which conceals multiple coherent plain-texts in one cipher-text. The cipher-text can be decrypted by different keys to produce different plain-texts. Security analysis showed that AMSC is secure against cipher-text only and known plain-text attacks. AMSC has the following applications: 1) it can send multiple messages for multiple receivers through one cipher-text;2) it can send one real message and multiple decoys for camouflage;and 3) it can send one real message to one receiver using parallel processing. Performance comparison with leading symmetric algorithms (DES, AES and RC6) demonstrated AMSC’s efficiency in execution time.

关键词： Deniable Encryption Multi Encryption Honey Encryption Steganography Symmetric Encryption Multi Encoding

Risks behind Device Information Permissions in Android OS

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Communications and Network 2017年第4期9卷 219-234页

作者： Ali Alshehri Anthony Hewins Maria McCulley Hani Alshahrani huirong fu Ye Zhu Oakland University Rochester Michigan USA University of Tabuk Tabuk KSA University of Maryland College Park College Park Maryland USA Cleveland State University Cleveland Ohio USA

In the age of smartphones, people do most of their daily work using their smartphones due to significant improvement in smartphone technology. When comparing different platforms such as Windows, iOS, Android, and Blackberry, Android has captured the highest percentage of total market share [1]. Due to this tremendous growth, cybercriminals are encouraged to penetrate various mobile marketplaces with malicious applications. Most of these applications require device information permissions aiming to collect sensitive data without user’s consent. This paper investigates each element of system information permissions and illustrates how cybercriminals can harm users’ privacy. It presents some attack scenarios using READ_PHONE_STATE permission and the risks behind it. In addition, this paper refers to possible attacks that can be performed when additional permissions are combined with READ_PHONE_STATE permission. It also discusses a proposed solution to defeat these types of attacks.

关键词： Android Security Privacy Device Identifiers Permissions

DroidData: Tracking and Monitoring Data Transmission in the Android Operating System

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Communications and Network 2017年第3期9卷 192-206页

作者： Hani Alshahrani Abdulrahman Alzahrani Alexandra Hanton Ali Alshehri huirong fu Ye Zhu Oakland University Rochester MI USA Najran University Najran KSA Loyola University Chicago Chicago IL USA Cleveland State University Cleveland OH USA

Most of the millions of Android users worldwide use applications from the official Android market (Google Play store) and unregulated alternative markets to get more functionality from their devices. Many of these applications transmit sensitive data stored on the device, either maliciously or accidentally, to outside networks. In this paper, we will study the ways that Android applications transmit data to outside servers and propose a user-friendly application, DroidData, to inform and protect the user from these security risks. We will use tools such as TaintDroid, AppIntent, and Securacy to propose an application that reveals what types of data are being transmitted from apps, the location to which the data is being transmitted, whether the data is being transmitted through a secure channel (such as HTTPS) and whether the user is aware that the information is being transmitted. The application will generate a report that allows the user to block the application that leaks sensitive information. In doing so, we will examine the importance, relevance, and prevalence of these Android Data security issues.

关键词： Android Security Privacy Tracking Data Malware

凝胶柱净化-高效液相色谱检测食品中的苏丹红

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色谱 2005年第5期23卷 542-544页

作者：谢维平黄盈煜傅晖蓉胡桂莲福建省泉州市卫生防疫站福建泉州362000

建立了凝胶柱净化-高效液相色谱同时检测食品中苏丹红Ⅰ,Ⅱ,Ⅲ和Ⅳ的方法.样品用乙醇提取,提取液经Bio-Beads SX3凝胶柱(200 mm×10 mm i.d.)净化,用环己烷-乙酸乙酯(体积比为1:1)洗脱.采用Symmetry Shield RP18柱(250 mm×4.6 mm i.d.,... 详细信息

建立了凝胶柱净化-高效液相色谱同时检测食品中苏丹红Ⅰ,Ⅱ,Ⅲ和Ⅳ的方法.样品用乙醇提取,提取液经Bio-Beads SX3凝胶柱(200 mm×10 mm i.d.)净化,用环己烷-乙酸乙酯(体积比为1:1)洗脱.采用Symmetry Shield RP18柱(250 mm×4.6 mm i.d., 5 μm)分离,以100%甲醇为流动相,流速1.5 mL/min;用二极管阵列检测器检测,检测波长478 nm.上述4种苏丹红组分在其质量浓度为0.1～10.0 mg/L时有良好的线性关系(r>0.999),方法的检测限为7～14 μg/kg;平均加标回收率为80.7% ～96.3% (添加水平为0.25,2.5 mg/kg),相对标准偏差为2.4% ～5.9% .方法灵敏可靠,能满足食品中苏丹红检测的需要.

关键词：凝胶柱高效液相色谱苏丹红食品

基于双模编码器-解码器框架的联机手写数学公式识别

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北京工业大学学报 2024年第1期50卷 50-60页

作者：付鹏斌李树军杨惠荣北京工业大学信息学部北京100124

为了充分利用联机手写数学公式的笔迹特征和全局二维结构特征,将联机模式和脱机模式联合,设计了一种基于编码器-解码器框架的双模识别模型。该模型可接受一维坐标点序列和二维静态图像形式的手写数学公式数据,通过联机编码器从输入的坐... 详细信息

为了充分利用联机手写数学公式的笔迹特征和全局二维结构特征,将联机模式和脱机模式联合,设计了一种基于编码器-解码器框架的双模识别模型。该模型可接受一维坐标点序列和二维静态图像形式的手写数学公式数据,通过联机编码器从输入的坐标点序列中提取笔迹特征信息,并通过脱机编码器从静态图像中提取二维结构特征信息,进而充分保留手写笔迹特征和全局二维结构特征。在编码器阶段,针对联机模式提出正弦编码,对输入的坐标点序列进行编码,补充笔画级别的信息,能够有效避免笔画间隔模糊导致的笔画信息丢失的问题;针对脱机模式提出平滑注意力机制,通过引入平滑窗口的方式,实现特征图中每个像素特征的感受野的自适应调整,在一定程度上解决了普通的注意力机制无法同时对尺寸相差较大的手写符号筛选有效特征信息的问题,有效提升了注意力机制捕捉有效手写区域的能力。实验结果表明,该模型的公式识别准确率可达58.76%,并且与相同领域内其他的识别模型相比,其可将公式识别准确率提升1.56%~4.71%,达到较高水平。

关键词：编码器-解码器联机脱机双模数学公式识别注意力机制

A Framework and QoS Based Web Services Discovery

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A Framework and QoS Based Web Services Discovery