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2015 Fifth International Conference on Digital Information Processing and Communications (ICDIPC)最新文献

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Simulation and parameter optimization of polysilicon gate biaxial strained silicon MOSFETs 多晶硅栅双轴应变硅mosfet的仿真及参数优化
H. D. Tsague, Bhekisipho Twala
Although cryptography constitutes a considerable part of the overall security architecture for several use cases in embedded systems, cryptographic devices are still vulnerable to the diversity types of side channel attacks. Improvement in performance of Strained Silicon MOSFETs utilizing conventional device scaling has become more complex, because of the amount of physical limitations associated with the device miniaturization. Therefore, a great deal of attention has recently been paid to the mobility improvement technology through applying strain to CMOS channels. This paper reviews the characteristics of strained-Si CMOS with an emphasis on the mechanism of mobility enhancement due to strain. The device physics for improving the performance of MOSFETs is studied from the viewpoint of electronic states of carriers in inversion layers and, in particular, the sub-band structures. In addition, design and simulation of biaxial strained silicon NMOSFET (n-channel) is done using Silvaco's Athena/Atlas simulator. From the results obtained, it became clear that biaxial strained silicon NMOS is one of the best alternatives to the current conventional MOSFET.
尽管密码学在嵌入式系统的几个用例中构成了整体安全体系结构的相当大的一部分,但密码学设备仍然容易受到各种类型的侧信道攻击。由于与器件小型化相关的物理限制的数量,利用传统器件缩放来改进应变硅mosfet的性能变得更加复杂。因此,对CMOS通道施加应变来提高迁移率的技术近年来受到了广泛的关注。本文综述了应变硅CMOS的特性,重点讨论了应变增强其迁移率的机理。从反转层载流子的电子态,特别是子带结构的角度,研究了提高mosfet性能的器件物理。此外,利用Silvaco的Athena/Atlas模拟器对双轴应变硅NMOSFET (n沟道)进行了设计和仿真。从所获得的结果来看,双轴应变硅NMOS是目前传统MOSFET的最佳替代品之一。
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引用次数: 6
Bank efficiency assessment using a hybrid approach of random forests and data envelopment analysis 使用随机森林和数据包络分析混合方法的银行效率评估
Imad Bou Hamad, A. Anouze
This study introduces a three-stage integrated framework consisting of data envelopment analysis (DEA), random forest, and logistic regression to examine and predict the impact of environmental variables on banks' performance. This framework identified five important environmental variables and their effects on bank performance when applied to 151 banks in Middle East and North African (MENA) countries over the period 2008-2010.
本研究采用数据包络分析(DEA)、随机森林和逻辑回归三阶段整合框架来检验和预测环境变量对银行绩效的影响。该框架确定了五个重要的环境变量及其对银行绩效的影响,并将其应用于2008-2010年期间中东和北非(MENA)国家的151家银行。
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引用次数: 1
Internet of things based smart environmental monitoring using the Raspberry-Pi computer 基于物联网的智能环境监测,使用树莓派电脑
Mohannad Ibrahim, Abdelghafor Elgamri, S. Babiker, Ahmed Mohamed
This paper proposes an approach to build a cost-effective standardized environmental monitoring device using the Raspberry-Pi (R-Pi) single-board computer. The system was designed using Python Programming language and can be controlled and accessed remotely through an Internet of Things platform. It takes information about the surrounding environment through sensors and uploads it directly to the internet, where it can be accessed anytime and anywhere through internet. Experimental results demonstrated that the system is able to accurately measure: temperature, humidity, light level and concentrations of the carbon monoxide harmful air pollutant. It's also designed to detect earthquakes through an assembled seismic sensor.
本文提出了一种利用树莓派(R-Pi)单板计算机构建具有成本效益的标准化环境监测设备的方法。该系统采用Python编程语言设计,可通过物联网平台远程控制和访问。它通过传感器获取周围环境的信息,并将其直接上传到互联网上,通过互联网可以随时随地访问。实验结果表明,该系统能够准确测量大气中有害污染物的温度、湿度、光照水平和一氧化碳浓度。它还可以通过一个组装好的地震传感器来探测地震。
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引用次数: 87
Theoretical reliability of dual GPS antennas over wireless fading channel 无线衰落信道下双GPS天线的理论可靠性
N. Mekloi
Because equal gain diversity does not require estimation of the channel fading amplitudes, it is often used in practical as reduced complexity alternative to the maximal ratio processing. This paper develops an exact formulation in order to investigate the performance of equal gain combining. The approach of this paper and its main contribution is to model the Gaussian channel of aircraft global positioning systems. The performance is interested in the exact outage probability of dual branch equal gain combining in wireless system in presence of co-channel interference. The more general scenario of unequal power co-channel interferer is also formulated and derived. As the results, the closed form solution of outage probability corresponds to a Rayleigh fading.
由于等增益分集不需要估计信道衰落幅度,因此在实际应用中常被用作降低复杂度的替代方案。为了研究等增益合并的性能,本文给出了一个精确的公式。本文的主要贡献是对飞机全球定位系统的高斯信道进行建模。研究无线系统中存在同信道干扰时双支路等增益组合的准确中断概率。还推导出了功率不等的同信道干扰的一般情况。结果表明,中断概率的闭形式解对应于瑞利衰落。
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引用次数: 0
Facial expression recognition using multi Radial Bases Function Networks and 2-D Gabor filters 基于多径向基函数网络和二维Gabor滤波器的面部表情识别
Raid Saabni
Facial expression analysis and recognition have been researched since the 17'th century. The foundational studies on facial expressions, which have formed the basis of today's research, can be traced back to few centuries ago. Precisely, a detailed note on the various expressions and movements of head muscles was given in 1649 by John Bulwer(1). Another important milestone in the study of facial expressions and human emotions, is the work done by the psychologist Paul Ekman(2) and his colleagues. This important work have been done in the 1970s and has a significant importance and large influence on the development of modern day automatic facial expression recognizers. This work lead to adapting and developing the comprehensive Facial Action Coding System(FACS), which has since then become the de-facto standard for facial expression recognition. Over the last decades, automatic facial expressions analysis has become an active research area that finds potential applications in fields such as Human-Computer Interfaces (HCI), Image Retrieval, Security and Human Emotion Analysis. Facial expressions are extremely important in any human interaction, and additional to emotions, it also reflects on other mental activities, social interaction and physiological signals. In this paper, we proposes an Artificial Neural Network (ANN) of two hidden layers, based on multiple Radial Bases Functions Networks (RBFN's) to recognize facial expressions. The ANN, is trained on features extracted from images by applying a multi-scale and multi-orientation Gabor filters. We have considered the cases of subject independent/dependent facial expression recognition using The JAFFE and the CK+ benchmarks to evaluate the proposed model.
面部表情的分析和识别从17世纪就开始研究了。关于面部表情的基础研究可以追溯到几个世纪以前,这些研究已经构成了今天研究的基础。准确地说,John Bulwer在1649年详细记录了头部肌肉的各种表情和运动(1)。面部表情和人类情感研究的另一个重要里程碑是心理学家保罗·埃克曼(Paul Ekman)和他的同事所做的工作。这项重要的工作在20世纪70年代完成,对现代自动面部表情识别的发展具有重要意义和重大影响。这项工作导致适应和发展全面的面部动作编码系统(FACS),从那时起,它已成为面部表情识别的事实上的标准。在过去的几十年里,自动面部表情分析已经成为一个活跃的研究领域,在人机界面(HCI)、图像检索、安全和人类情感分析等领域找到了潜在的应用。面部表情在任何人际交往中都是极其重要的,除了情感之外,它还反映了其他心理活动、社会互动和生理信号。本文提出了一种基于径向基函数网络(RBFN)的两隐层人工神经网络(ANN)来识别面部表情。该人工神经网络通过应用多尺度和多方向Gabor滤波器对从图像中提取的特征进行训练。我们考虑了受试者独立/依赖面部表情识别的情况,使用JAFFE和CK+基准来评估所提出的模型。
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引用次数: 12
Genetic semantic graph approach for multi-document abstractive summarization 多文档抽象摘要的遗传语义图方法
Atif Khan, N. Salim, Y. J. Kumar
The aim of automatic multi-document abstractive summarization is to create a compressed version of the source text and preserves the salient information. Existing graph based summarization methods treat sentence as bag of words, rely on content similarity measure and did not consider semantic relationships between sentences. These methods may fail in determining redundant sentences that are semantically equivalent. This paper introduces a genetic semantic graph based approach for multi-document abstractive summarization. Semantic graph from the document set is constructed in such a way that the graph nodes represent the predicate argument structures (PASs), extracted automatically by employing semantic role labeling (SRL); and the edges of graph correspond to semantic similarity weight determined from PAS-to-PAS semantic similarity, and PAS-to-document set relationship. The PAS-to-document set relationship is represented by different features, weighted and optimized by genetic algorithm. The salient graph nodes (PASs) are ranked based on modified graph based ranking algorithm. In order to reduce redundancy, we utilize maximal marginal relevance (MMR) to re-ranks the PASs and use language generation to generate summary sentences from the top ranked PASs. Experiment of this study is carried out using DUC-2002, a standard corpus for text summarization. Experimental results reveal that the proposed approach performs better than other summarization systems.
自动多文档抽象摘要的目的是创建源文本的压缩版本并保留突出信息。现有的基于图的摘要方法将句子视为词包,依赖于内容相似度度量,没有考虑句子之间的语义关系。这些方法可能无法确定语义等价的冗余句子。提出了一种基于遗传语义图的多文档抽象摘要方法。从文档集中构建语义图,图节点表示谓词参数结构(PASs),通过使用语义角色标记(SRL)自动提取;图的边对应由pas到pas的语义相似度和pas到文档集的关系确定的语义相似度权重。采用不同的特征来表示pas与文档集的关系,并通过遗传算法进行加权和优化。基于改进的基于图的排序算法对显著图节点(PASs)进行排序。为了减少冗余,我们利用最大边际相关性(MMR)对PASs重新排序,并使用语言生成从排名靠前的PASs生成总结句。实验采用标准的文本摘要语料库dac -2002进行。实验结果表明,该方法优于其他摘要系统。
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引用次数: 13
Improving performance through path-based hardware/software partitioning 通过基于路径的硬件/软件分区提高性能
E. Azari, Hakduran Koc
Hardware/software partitioning has always been a crucial step in co-design of embedded systems as it affects the overall system performance significantly. This paper proposes a new approach to partition the tasks in a given Control Data Flow Graph (CDFG) representing an application. In order to enhance the performance, our approach considers the combination of two main paths in the system: hot path and critical path during the partitioning phase of the co-design. These two paths dominate the total execution time of a system. After identifying the hot path and the critical path, the proposed approach assigns as many tasks as possible to the hardware components by giving higher priorities to the tasks in the hot paths which directly have significant effect on critical path. Consequently, the total execution time of an application is reduced. The experimental evaluation shows that the proposed path-based partitioning method improves the performance significantly. In addition, the performance/area trade-off is presented.
硬件/软件分区一直是嵌入式系统协同设计的关键步骤,因为它对系统的整体性能影响很大。本文提出了一种新的方法来对给定的控制数据流图(CDFG)中的任务进行划分。为了提高性能,我们的方法在协同设计的划分阶段考虑了系统中两条主要路径的组合:热路径和关键路径。这两条路径支配着系统的总执行时间。该方法在确定热路径和关键路径后,将对关键路径有直接影响的热路径上的任务赋予更高的优先级,尽可能多地分配给硬件组件。因此,减少了应用程序的总执行时间。实验结果表明,本文提出的基于路径的分割方法显著提高了分割性能。此外,还介绍了性能/面积的权衡。
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引用次数: 4
Analysing emerging memory technologies for big data and signal processing applications 分析大数据和信号处理应用的新兴存储技术
T. Xu, V. Leppãnen
In this paper, we investigate and compare different emerging memory technologies as on-chip cache for big data and signal processing applications. Static Random Access Memory (SRAM) has been widely used as level 1 and last level caches for multicore processors. Server chips integrate Dynamic Random Access Memory (DRAM) as an additional cache for better server-level applications that process more data. Both SRAM and DRAM have advantages and disadvantages. Therefore new types of RAMs are proposed and prototyped. For big data and signal processing applications nowadays, enormous amount of data are processed, usually with time limitations. We analyse novel RAMs, including Phase-change RAM (PRAM), Magnetoresistive RAM (MRAM), Ferroelectric RAM (FRAM) and Resistive RAM (RRAM). The conventional and new memories are analysed in terms of size, area, access latency and power consumption. We present benchmark results using a full system simulator. Workloads are selected from several big data, server, signal processing and video processing applications. Experiments show that, in consideration of these applications, it is crucial to replace SRAM and DRAM caches with MRAM and RRAM.
在本文中,我们研究并比较了不同的新兴存储技术作为大数据和信号处理应用的片上缓存。静态随机存取存储器(SRAM)被广泛用作多核处理器的一级和最后一级缓存。服务器芯片集成动态随机存取存储器(DRAM)作为额外的缓存,用于处理更多数据的更好的服务器级应用程序。SRAM和DRAM都有各自的优缺点。因此,提出了新型ram并进行了原型设计。在当今的大数据和信号处理应用中,处理的数据量非常大,通常有时间限制。我们分析了新型RAM,包括相变RAM (PRAM)、磁阻RAM (MRAM)、铁电RAM (FRAM)和电阻RAM (RRAM)。分析了传统存储器和新型存储器的尺寸、面积、访问延迟和功耗。我们使用一个完整的系统模拟器给出基准测试结果。工作负载从几个大数据、服务器、信号处理和视频处理应用中选择。实验表明,考虑到这些应用,用MRAM和RRAM取代SRAM和DRAM缓存至关重要。
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引用次数: 6
Comparison of the MrDR method against different DoS attacks in MANETs 在manet中MrDR方法对抗不同DoS攻击的比较
Albandari Alsumayt, J. Haggerty, Ahmad Lotfi
A Mobile Ad-hoc Network (MANET) has special characteristics such as dynamic topology, the absence of an administrative point and no fixed infrastructure. These features make it vulnerable to many attacks, such as the Denial of Service (DoS) attack. This type of attack deprives users of access to their legitimate services leading to degradation of the network. This paper posits the Monitor, Detect, Rehabilitate (MrDR) method, which is applied to detect three types of DoS attacks: wormhole; greyhole; and jellyfish attacks is an effective mechanism for dealing with them. The Network Simulator (NS2) was used to test the efficiency of the MrDR method and the results show that it works better for greyhole attacks than wormhole attacks, and it works least well in the case of jellyfish attacks.
移动自组织网络(MANET)具有一些特殊的特征,如动态拓扑结构、缺乏管理点和没有固定的基础设施。这些特性使它容易受到许多攻击,例如拒绝服务攻击(DoS)。这种类型的攻击剥夺了用户访问其合法服务的权限,导致网络退化。本文提出了监测、检测、修复(MrDR)方法,用于检测三种类型的DoS攻击:虫洞攻击;greyhole;水母的攻击是对付它们的有效机制。利用网络模拟器(Network Simulator, NS2)测试了MrDR方法的有效性,结果表明该方法对灰洞攻击的效果优于虫洞攻击,对水母攻击的效果最差。
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引用次数: 7
The design of wearable medical device for triaging disaster casualties in developing countries 用于发展中国家灾害伤亡分类的可穿戴医疗设备的设计
M. Niswar, A. S. Wijaya, Muhammad Ridwan, Adnan, A. A. Ilham, R. Sadjad, Andreas Vogel
Disasters create mass casualties and the number of casualties usually surpasses the capability of medical resources, hence, medical teams must attach paper triage to casualties for determining the priority of treatments based on the severity of their condition. However, since casualties' condition could change at anytime, the paper triage cannot provide the latest information of their health condition. Therefore, we have developed a wearable medical device that can continuously monitor the health condition of casualties. It is a lightweight and low-cost wearable electronic triage with sensing system that can monitor the vital sign of casualties and classify them into three levels of severe conditions, i.e., major, delayed, and minor status. The electronic triage is mainly built from a low-power 8-bit microcontroller unit, RF units, and sensors including pulse oximetry and thermocouple breath sensor. This electronic triage has been developed using low-cost electronic components that are available in developing countries such as Indonesia, so that, our electronic triage can be easily manufactured and maintained locally. Furthermore, we have also developed a simple android-based mobile application for data acquisition, priority classification, data storage and data transfer to medical record server in hospitals.
灾害造成大量伤亡,伤亡人数通常超过医疗资源的能力,因此,医疗队必须对伤亡人员进行纸质分类,以便根据病情的严重程度确定治疗的优先次序。但是,由于伤亡人员的情况随时可能发生变化,纸质分诊无法提供最新的健康状况信息。因此,我们开发了一种可穿戴医疗设备,可以持续监测伤亡人员的健康状况。它是一种轻量化、低成本的可穿戴电子分诊系统,带有传感系统,可以监测伤亡人员的生命体征,并将其分为严重、延迟和轻微三个严重程度。电子分诊主要由低功耗8位微控制器单元、射频单元和包括脉搏血氧仪和热电偶呼吸传感器在内的传感器组成。这种电子分诊系统是使用在印度尼西亚等发展中国家可以获得的低成本电子元件开发的,因此,我们的电子分诊系统可以很容易地在当地制造和维护。此外,我们还开发了一个简单的基于android的移动应用程序,用于医院的数据采集、优先级分类、数据存储和数据传输到病历服务器。
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引用次数: 15
期刊
2015 Fifth International Conference on Digital Information Processing and Communications (ICDIPC)
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