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2016 7th International Conference on Sciences of Electronics, Technologies of Information and Telecommunications (SETIT)最新文献

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A theoretical study of the complexity of complex networks 复杂网络复杂性的理论研究
Raihana Mokhlissi, D. Lotfi, M. El Marraki
The complexity of a network is an effective tool to analyze its structure. It predicts its performance and its reliability. In this paper, we evaluate the complexity of two complex networks: The Flower network and the Mosaic network. First, we propose two combinatorial approaches: the bipartition and the reduction that facilitate the calculation of the complexity of complex and large networks. Then, we combine these approaches in order to reveal the mechanism of the construction of our networks. We study their topological properties and we enumerate their spanning trees. Our results highlight the potential of our combinatorial approaches, which allow us to assess the complexity for two types of large and complex networks as the Flower network and the Mosaic network.
网络的复杂性是分析网络结构的有效工具。它预测了它的性能和可靠性。在本文中,我们评估了两种复杂网络:花网络和马赛克网络的复杂性。首先,我们提出了两种组合方法:二分法和约简法,这两种方法有助于计算复杂和大型网络的复杂性。然后,我们将这些方法结合起来,以揭示我们的网络构建机制。我们研究了它们的拓扑性质,并列举了它们的生成树。我们的结果突出了我们组合方法的潜力,这使我们能够评估两种类型的大型复杂网络的复杂性,即Flower网络和Mosaic网络。
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引用次数: 7
Fuzzy sentiment classification in social network Facebook' statuses mining 社交网络Facebook状态挖掘中的模糊情感分类
Radhia Toujani, J. Akaichi
Nowadays, posts expressing opinions in social networks are beneficial for businesses, sway public sentiments and emotions having higher social and political impact. In fact, opinions mining or sentiment classification is an important issue in social networks. Therefore, machine learning methods and natural language processing are very effective for opinion mining which are widely used in social media network. The main purpose of the paper is to demonstrate the feasibility of machine learning and sentiment analysis for studying Tunisian users' statuses. We aim to extract terms related to sentiment and behavior, especially during the “Tunisian Election”. While existing sentiment analysis methods focus only on the extraction of positive and negative opinions, in our work we aim to extract fuzzy opinions. That is why we propose to follow Fuzzy Support Vector Machine during our classification process. This later is compared with the basic Support Vector Machine referring to assessement measures such us accuracy, precision, recall, and F-measure.
如今,在社交网络上发表观点的帖子有利于企业,影响公众情绪,具有更高的社会和政治影响。事实上,观点挖掘或情感分类是社交网络中的一个重要问题。因此,在社交媒体网络中广泛应用的意见挖掘中,机器学习方法和自然语言处理是非常有效的。本文的主要目的是证明机器学习和情感分析用于研究突尼斯用户状态的可行性。我们的目标是提取与情绪和行为相关的术语,特别是在“突尼斯选举”期间。现有的情感分析方法只关注于积极和消极意见的提取,而在我们的工作中,我们的目标是提取模糊意见。这就是为什么我们建议在分类过程中遵循模糊支持向量机。稍后将其与基本的支持向量机进行比较,支持向量机指的是评估度量,如准确性、精度、召回率和f度量。
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引用次数: 9
Design and implementation of a Data Distribution Service blockset for an SAE Benchmark electric vehicle 为SAE基准电动汽车设计和实现数据分发服务模块集
Manel Takrouni, Azer Hasnaoui, Marwa Gdhaifi, Taher Ezzedine, S. Hasnaoui
We designed a SIMULINK vehicle blockset that corresponds to the Society of Automotive Engineers (SAE) benchmark. We used the Embedded Matlab tool for implementing this blockset in order to generate a portable C standard code. As a first level of CBSE, modules of the realized blockset are connected directly each to the other. We tested the exchanged messages in order to verify their validity as described by the standard without regarding the targets where the modules will be implemented. We introduced a second level of abstraction where we connect each module to a Simulink DDS blocks to take advantage of the QoS parameters, events generated in response to faults or exceeding of fixed parameters and calls to callback functions. These functionalities are managed by DDS itself without involving the realized modules in the first level of CBSE. Only the modules of the powertrain and chassis domains are connected to FlexRay bus. The other domains (Body and Multimedia) can be connected to the Ethernet network with minimum latency budget.
我们设计了一个符合汽车工程师协会(SAE)基准的SIMULINK车辆模块集。为了生成可移植的C标准代码,我们使用了嵌入式Matlab工具来实现这个块集。作为CBSE的第一级,所实现的块集的模块彼此直接连接。我们对交换的消息进行了测试,以验证标准所描述的消息的有效性,而无需考虑模块将在何处实现的目标。我们引入了第二级抽象,其中我们将每个模块连接到Simulink DDS块,以利用QoS参数、响应故障或超过固定参数而生成的事件以及对回调函数的调用。这些功能由DDS本身管理,而不涉及CBSE第一层中已实现的模块。只有动力总成和底盘域的模块连接到FlexRay总线。其他域(Body和Multimedia)可以以最小的延迟预算连接到以太网。
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引用次数: 2
Hosted, cloud and SaaS, off-premises ERP systems adoption by Moroccan SMEs: A focus group study 摩洛哥中小企业采用托管、云和SaaS、外部ERP系统:焦点小组研究
AmineArrahmane Achargui, A. Zaouia
Small and Medium-sized Enterprises (SME) are economic catalysts whose needs should be at the heart of each country's policymaking priority. Either for Large Enterprises or SMEs, Enterprise Resource Planning (ERP) systems are one of the most discussed subjects on the Information System (IS) research field. Their successful implementation promises a 360-view of the business activity, a more consistent IS providing quality data that supports enterprises seek for increased productivity and competitiveness. However, very frustrating confusions can be found almost everywhere discussing traditional ERP, Web-based ERP, Internet-enabled ERP, Hosted ERP, SaaS ERP and Cloud ERP in both the academia and professional literature. In this study, while distinguishing between SMEs that use ICT as a support to their primary business process and SMEs whose core business is ICT, the authors try to help draw lines between the three off-premises ERP system deployment models adoption, namely the Hosted ERP, SaaS ERP and Cloud ERP system deployment models. A focus group of three Moroccan SMEs whose core business is ICT, meets to discuss the three off-premises ERP systems deployment models adoption by Moroccan SMEs that use ICT as a support to their primary business process. Nine Experts from the ICT oriented SMEs share their views on motives and barriers to the deployment models adoption for the case of Morocco. The findings are expected to assist SMEs in their off-premises ERP systems adoption. They may also inform other ERP vendors and integrators with respect to end user firms' concerns.
中小企业是经济的催化剂,其需求应成为各国政策制定的核心优先事项。无论是大型企业还是中小企业,企业资源规划(ERP)系统都是信息系统(IS)研究领域讨论最多的课题之一。他们的成功实施保证了业务活动的360度视图,一个更一致的信息系统提供高质量的数据,支持企业寻求提高生产力和竞争力。然而,在学术界和专业文献中,讨论传统ERP、基于web的ERP、internet支持的ERP、托管ERP、SaaS ERP和云ERP时,几乎随处可见令人沮丧的困惑。在本研究中,在区分使用ICT作为其主要业务流程支持的中小企业和以ICT为核心业务的中小企业的同时,作者试图帮助区分采用的三种非本地ERP系统部署模式,即托管ERP、SaaS ERP和云ERP系统部署模式。以ICT为核心业务的三家摩洛哥中小企业组成焦点小组,讨论利用ICT支持其主要业务流程的摩洛哥中小企业采用的三种外部ERP系统部署模式。来自面向信息通信技术的中小企业的九位专家分享了他们对摩洛哥采用部署模式的动机和障碍的看法。预计调查结果将有助于中小企业采用外部ERP系统。他们也可以告知其他ERP供应商和集成商关于最终用户公司的关注。
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引用次数: 3
Combining top-hat, thresholding and watershed transformation for 3D Inverse Synthetic Aperture Radar Images segmentation 结合顶帽、阈值和分水岭变换的三维逆合成孔径雷达图像分割
Asma Elyounsi, H. Tlijani, M. Bouhlel
Segmentation is a critical step, preliminary to High-level processing such as classification, detection and object extraction from radar images. It provides an easier way to extract information in automatic target recognition (ATR) fields. However, extracting the shape of the target from this kind of images is very difficult task, so this paper presents a new approach for Radar image segmentation and how to be able to extract target shape from 3D Inverse Synthetic Aperture Radar (ISAR) Images by combining mathematical morphology watershed and thresholding methods with top-hat transformation.
分割是雷达图像分类、检测、目标提取等高级处理的基础。它为自动目标识别(ATR)领域的信息提取提供了一种简便的方法。然而,从这类图像中提取目标形状是一项非常困难的任务,因此本文提出了一种新的雷达图像分割方法,并将数学形态学分水岭和阈值分割方法与顶帽变换相结合,从三维逆合成孔径雷达(ISAR)图像中提取目标形状。
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引用次数: 4
QoE model based on fuzzy logic system for offload decision in HetNets environment 基于模糊逻辑系统的QoE模型在HetNets环境下的卸载决策
N. Torjemen, G. E. M. Zhioua, N. Tabbane
To cope the surge traffic demand, several approaches are proposed. The HetNet, based on LTE-A and Wi-Fi networks, is one of the promising architecture widely used by operators as the next generation of their cellular networks. In this paper, we propose a new offload schema from LTE-A to Wi-Fi. It is based on new QoE metric called QoE Score which allows to takes into consideration the business value of the users. The QoE Score is given by a fuzzy logic system and used as key metric for offload decision in our algorithm. Results show that more than 65% can be offloaded from LTE-A to Wi-Fi while ensuring a good end user QoE. In addition, it achieves better results compared to our previous multi constraints algorithm.
为了应对激增的交通需求,提出了几种方法。基于LTE-A和Wi-Fi网络的HetNet是被运营商广泛用作下一代蜂窝网络的有前途的架构之一。在本文中,我们提出了一种新的从LTE-A到Wi-Fi的卸载方案。它基于称为QoE Score的新QoE度量,该度量允许考虑用户的业务价值。QoE分数由模糊逻辑系统给出,并作为卸载决策的关键指标。结果表明,在确保良好的终端用户QoE的同时,可以将超过65%的LTE-A转移到Wi-Fi。此外,与我们以前的多约束算法相比,它取得了更好的效果。
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引用次数: 4
IQCN: Improved Quantized Congestion Notification for Ethernet Networks to provide stability and reduce data loss IQCN:改进以太网络的量化拥塞通知,以提供稳定性和减少数据丢失
Maha Bouaziz, Heni Kaaniche, L. Kamoun
Congestion is a major problem for the data-processing Ethernet Networks, because it causes data loss and application failure in consequence. To this end, this kind of network needs to be suitably controlled in order to guarantee good performances. IEEE 802.1Qau standard is in progress to find an efficient congestion control mechanism, which may ensure a properly use of the available resources and avoid problems that cause this issue. In this context, several researches have contributed, however, none of them paid enough attention to resolve all issues. In this paper, we propose a new solution called IQCN as a contribution to IEEE 802.1Qau. This proposition is based on QCN Serial HAI and focuses on dealing with the congestion control encountered weaknesses. The main aim of the proposed mechanism is to provide stability and avoid/reduce data loss rate caused by congestion. To provide these purposes, IQCN used to reduce the signaling overhead cost and to predict the speed of incoming traffic to properly react face to the congestion issues. Our proposed mechanism overcomes and mitigates problems caused by congestion. Obtained simulation results using Omnet++ show that IQCN outperforms the QCN Serial HAI mechanism in terms of stability, fairness, overhead notification messages and data loss.
拥塞是数据处理以太网的一个主要问题,它会导致数据丢失和应用程序失败。为此,需要对这种网络进行适当的控制,以保证其良好的性能。IEEE 802.1Qau标准正在寻找一种有效的拥塞控制机制,以确保正确使用可用资源并避免引起拥塞问题的问题。在此背景下,一些研究做出了贡献,但没有一个研究给予足够的重视来解决所有问题。在本文中,我们提出了一个名为IQCN的新解决方案,作为对IEEE 802.1Qau的贡献。这个命题是基于QCN串行HAI,并着重于处理拥塞控制遇到的弱点。提出的机制的主要目的是提供稳定性和避免/减少拥塞造成的数据丢失率。为了实现这些目的,IQCN用于降低信令开销成本和预测传入流量的速度,以正确地应对拥塞问题。我们提出的机制克服和减轻了由交通堵塞引起的问题。利用omnet++进行的仿真结果表明,IQCN在稳定性、公平性、通知消息开销和数据丢失等方面都优于QCN Serial HAI机制。
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引用次数: 0
A 4GHz temperature compensated CMOS ring oscillator for impulse radio UWB 一种用于脉冲无线电超宽带的4GHz温度补偿CMOS环形振荡器
Nadia Gargouri, Z. Sakka, D. Ben Issa, A. Kachouri, M. Samet
This paper presents a voltage controlled ring oscillator (VCO) with a simpler temperature compensation circuit to produce a stable 4 GHz oscillation frequency. The proposed temperature compensation circuit is able to achieve a 89.25 % reduction in the variation of the center frequency of the uncompensated VCO and 108 ppm/°C temperature stability. Simulations using TSMC 0.18 µm CMOS technology show a low phase noise of a −74.55 dBc/Hz at 1 MHz offset from the carrier and a total power consumption of 11.06 mA. Therefore, the proposed oscillator system is suitable for the impulse radio ultra wide band (IR-UWB) wireless communication system.
本文提出了一种具有简单温度补偿电路的压控环形振荡器(VCO),可产生稳定的4ghz振荡频率。所提出的温度补偿电路能够使未补偿压控振荡器的中心频率变化降低89.25%,温度稳定性为108 ppm/°C。采用台积电0.18µm CMOS技术的仿真显示,在距载波1 MHz偏移时,相位噪声为- 74.55 dBc/Hz,总功耗为11.06 mA。因此,该振荡器系统适用于脉冲无线电超宽带(IR-UWB)无线通信系统。
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引用次数: 13
SIMO type mixed mode biquadratic filter using second generation current conveyor circuits 采用第二代电流输送电路的SIMO型混合模式双二次滤波器
T. Ettaghzouti, N. Hassen, K. Besbes
This paper presents a new configuration of mixed mode biquadratic filter composed by four second generation current conveyor circuits (CCII), two grounded capacitors and five grounded resistors. This filter is characterized by single input and three output terminals for each mode. It can provides all the three standard filter functions, namely low-pass, band-pass and high-pass, without changing the circuit topology. The non-ideal analysis and the sensitivity analysis have been included. Both active and passive sensitivities are not more than unity. TSPICE simulation results, using 0.18µm TSMC CMOS technology with a supply voltage of ± 0.75V, are included to verify the workability of the proposed filter. The given results are agree well with the theoretical.
本文提出了一种由4个第二代电流输送电路(CCII)、2个接地电容和5个接地电阻组成的混合模式双二次滤波器的新结构。该滤波器的特点是每个模式有一个输入和三个输出端子。它可以在不改变电路拓扑的情况下提供所有三种标准滤波器功能,即低通、带通和高通。包括非理想分析和敏感性分析。主动敏感和被动敏感都是统一的。采用0.18µm TSMC CMOS技术,电源电压为±0.75V的TSPICE仿真结果验证了所提出滤波器的可操作性。计算结果与理论结果吻合较好。
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引用次数: 3
Dynamically reconfigurable DC motor control system based on co-design methodology 基于协同设计方法的动态可重构直流电机控制系统
I. Jaziri, L. Charaabi, K. Jelassi
The design of embedded control systems is rapidly change during the last decade. Guaranteeing the safety of these systems is a very challenging topic. It is possible to identify two main factors that are involved in the control of those systems: Hardware/Software (HW-SW) codesign and dynamic reconfiguration. Furthermore, the use of an embedded operating system associated with a functional module library is required for the establishment of an efficient co-design solution. This paper aims to propose an appropriate co-design methodology for closed loop DC motor control based on Field Programmable Gate Arrays (FPGA) and low cost platform Beaglebone board supported by a Linux operating system. The dynamic reconfiguration of the control system is provided by an embedded web server implemented on Beaglebone.
近十年来,嵌入式控制系统的设计发生了迅速的变化。保证这些系统的安全性是一个非常具有挑战性的课题。有可能确定涉及这些系统控制的两个主要因素:硬件/软件(HW-SW)协同设计和动态重新配置。此外,需要使用与功能模块库相关联的嵌入式操作系统来建立有效的协同设计解决方案。本文旨在提出一种合适的基于现场可编程门阵列(FPGA)和低成本平台Beaglebone板的闭环直流电机控制协同设计方法,并支持Linux操作系统。在Beaglebone上实现的嵌入式web服务器提供了控制系统的动态重构。
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引用次数: 1
期刊
2016 7th International Conference on Sciences of Electronics, Technologies of Information and Telecommunications (SETIT)
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