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2014 2nd International Conference on Electronic Design (ICED)最新文献

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Development of a framework to reduce overhead on database engine through data distribution 开发一个框架,通过数据分发来减少数据库引擎的开销
Pub Date : 2014-08-01 DOI: 10.1109/ICED.2014.7015773
Md. Hafizur Rahman, Md Nasim Akter, R. B. Ahmad, M. Nader-uz-zaman, Mostafijur Rahman
Software driven solutions are limited to the amount of memory size and storage capacity, but the sizes of databases are increasing every day. Hence, now a day, handling data and accessing it in an acceptable time is one of the biggest challenges especially in a large database system. In a database, the records can be categorized according to the access frequencies; some records are very frequently accessed (hot data), some records are hardly accessed (cold data) and other records accessed occasionally (warm data). In a conventional database we keep all hot, warm and cold records in a single database. In case of record access (query, update etc.) a query might takes longer time even if a good data accessing algorithm (clustering/mining) incorporate with the database. Thus categorizing of the data set, i. e. clustering in terms of access frequency may improve data accessibility. In this paper, we are proposing a data clustering mechanism based on data access frequency. Finally, the expected result shows how and why data accessibility time should outperform other available data clustering techniques.
软件驱动的解决方案受限于内存大小和存储容量,但数据库的大小每天都在增加。因此,如今,在可接受的时间内处理和访问数据是最大的挑战之一,特别是在大型数据库系统中。在数据库中,可以根据访问频率对记录进行分类;有些记录访问非常频繁(热数据),有些记录很少访问(冷数据),还有一些记录偶尔访问(热数据)。在传统的数据库中,我们将所有的热、暖、冷记录保存在一个数据库中。在记录访问(查询、更新等)的情况下,即使一个好的数据访问算法(聚类/挖掘)与数据库结合,查询也可能需要更长的时间。因此,对数据集进行分类,即根据访问频率进行聚类,可以提高数据的可访问性。本文提出了一种基于数据访问频率的数据聚类机制。最后,预期结果显示了数据可访问时间如何以及为什么优于其他可用的数据聚类技术。
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引用次数: 2
Large negative dispersion with residual dispersion (Dr) compensation over E+S+C+L+U wavelength bands by using single mode hexagonal Photonic crystal fiber (H-PCF) 使用单模六方光子晶体光纤 (H-PCF) 在 E+S+C+L+U 波段上补偿大负色散和残余色散 (Dr)
Pub Date : 2014-08-01 DOI: 10.1109/ICED.2014.7015797
Md. Shah Jaman, Md. Sharafat Ali, N. Ahmed, S. Aljunid, Matiur Rahman, R. Ahmad
In transmission media the Photonic crystal fibers (PCFs) are highly suitable for wavelength-division-multiplexing (WDM) systems. This paper exhibit a Hexagonal Photonic Crystal Fiber (H-PCF) that mention simultaneously high birefringence, large nonlinearity and high negative dispersion. The proposed H-PCFs shows a large negative dispersion coefficient of about -188 to -435 ps/(nm.km) over E and U-bands along with relative dispersion slope (RDS) perfectly matched to that of single mode fiber of about 0.0036 nm-1. Besides according to simulation, the birefringence of the desired designed is 1.27×10-2 with the large nonlinear coefficient is 51.54W-1Km-1 at the operating wavelength of 1550 nm.
在传输介质中,光子晶体光纤(PCF)非常适用于波分复用(WDM)系统。本文展示了一种同时具有高双折射、大非线性和高负色散特性的六边形光子晶体光纤(H-PCF)。所提出的 H-PCF 在 E 波段和 U 波段显示出约 -188 至 -435 ps/(nm.km)的高负色散系数,其相对色散斜率(RDS)与约 0.0036 nm-1 的单模光纤完全匹配。此外,根据模拟,在工作波长为 1550 nm 时,所设计的光纤的双折射为 1.27×10-2,大非线性系数为 51.54W-1Km-1。
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引用次数: 2
L-band single-wavelength Brillouin fiber laser utilizing ring cavity 利用环形腔的l波段单波长布里渊光纤激光器
Pub Date : 2014-08-01 DOI: 10.1109/ICED.2014.7015817
M. Hurera, N. Hambali, N. Roshidah, M. Zainudin, A. Z. Malek, M. Wahid, Persiaran Mahsuri, Bayan Lepas, P. Pinang
In this paper we demonstrate a single-wavelength Brillouin Fiber laser utilizing ring cavity which operated in the L-band wavelength region. The Brillouin gain medium is provided by 4 km long of Single Mode Fiber. Based on the experimental result, it shows that the maximum output Brillouin power of 9.73 dBm with an average value of 8.5 dBm was obtained as the Brillouin pump power of 16.0 dBm and pump wavelength of 1580 nm were applied to the system. The output Brillouin Stokes power was directly dependence on the value of output Brillouin power. The optical-to-noise ratio of 43.1 dB has been generated from the system. Furthermore, without any self-lasing cavity modes activities, single-wavelength BFL is able to operate freely across L-band wavelength region.
本文介绍了一种利用环形腔在l波段工作的单波长布里渊光纤激光器。布里渊增益介质由长4公里的单模光纤提供。实验结果表明,当泵浦功率为16.0 dBm,泵浦波长为1580 nm时,系统最大输出布里渊功率为9.73 dBm,平均值为8.5 dBm。输出布里渊功率直接依赖于输出布里渊功率的大小。系统产生了43.1 dB的光噪比。此外,在没有任何自激光腔模式活动的情况下,单波长BFL能够在l波段范围内自由工作。
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引用次数: 3
The new method to save energy for Openflow Switch based on traffic engineering 基于交通工程的Openflow交换机节能新方法
Pub Date : 2014-08-01 DOI: 10.1109/ICED.2014.7015820
Tran Hoang Vu, V. C. Luc, Nguyen Trung Quan, Tran Manh Nam, Nguyen Huu Thanh, Pham Ngoc Nam
Improving energy efficiency in network equipments and data centers is becoming an increasingly important research topic. Recent researches on energy saving for green data center aim to solve problem: How to make the energy consumption is proportional to the actual traffic on the network. In this paper, we present a design aimed at reducing the power consumption for Openflow Switches while guaranteeing the Quality of Service (QoS). Firstly, we design the Performance Switch to save energy according to input traffic. When there is not any traffic going through the switch then operating frequence will automatically reduce to 0 MHz and it is changed to 125MHz in case the switch receives and transmits data. Finally, we describe our test system and performance evaluations. Experimental results show excellent evident in energy saving according to various ranges of traffic load. Our switches can save about 30%-35% of power consumption compared with normal Openflow switch.
提高网络设备和数据中心的能源效率已成为一个日益重要的研究课题。绿色数据中心的节能研究主要是为了解决如何使能耗与网络的实际流量成正比的问题。在本文中,我们提出了一种设计,旨在降低Openflow交换机的功耗,同时保证服务质量(QoS)。首先,我们设计了性能开关,根据输入流量进行节能。当没有任何业务通过交换机时,工作频率将自动降低到0 MHz,并在交换机接收和传输数据的情况下更改为125MHz。最后,介绍了我们的测试系统和性能评估。实验结果表明,在不同的交通负荷范围内,该方法都有很好的节能效果。与普通的Openflow交换机相比,我们的交换机可以节省约30%-35%的功耗。
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引用次数: 5
A hybrid chaos and neural network cipher encryption algorithm for compressed video signal transmission over wireless channel 一种用于无线信道压缩视频信号传输的混沌与神经网络混合密码加密算法
Pub Date : 2014-08-01 DOI: 10.1109/ICED.2014.7015772
T. A. Fadil, S. Yaakob, R Badlishah Ahmad
In this paper, a hybrid framework of compressed and encrypted video signal transmission over wireless channel has been designed and implemented. Chaos theory property has been combined with artificial neural network to construct a cipher algorithm called a Chaotic Neural Network (CNN). This algorithm has been embedded and integrated inside MPEG-2 video codec standard to transform the plaintext (compressed video data) into an unintelligible form. The resultant compressed and encrypted bitstream has been transmitted from source to destination by using Orthogonal Frequency Division Multiplexing (OFDM) modulation technique. The effect of wireless channel condition has been investigated for both AWGN and Rayleigh fading channel. A video signal sample of size 176 × 144 (QCIF standard format) with rate of 30 frame per second has been used for test and simulate the overall system model framework performance. MATLAB software package has been used for system model framework implementation. The proposed framework is flexible and has ability to control output video quality, bit rate, and group of picture (GOP) number and their arrangement. Subjective and objective measurements have been used for overall system model performance evaluation. Results indicate high sensitivity behavior for both key and plaintext modification with high entropy result value.
本文设计并实现了一种压缩与加密视频信号在无线信道上的混合传输框架。将混沌理论的性质与人工神经网络相结合,构造了一种称为混沌神经网络(CNN)的密码算法。该算法已被嵌入并集成到MPEG-2视频编解码器标准中,用于将明文(压缩视频数据)转换为不可理解的形式。通过正交频分复用(OFDM)调制技术,将压缩加密后的比特流从源端传输到目的端。研究了无线信道条件对AWGN和瑞利衰落信道的影响。采用了176 × 144 (QCIF标准格式)的视频信号样本,以30帧/秒的速率对系统模型框架的整体性能进行了测试和仿真。采用MATLAB软件包进行系统模型框架的实现。该框架具有一定的灵活性,能够控制输出视频质量、比特率、图像组(GOP)数及其排列。主观和客观测量已被用于整体系统模型的性能评估。结果表明,密钥和明文修改都具有高灵敏度,结果熵值高。
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引用次数: 7
Two-port oscillators based on three impedance structure 基于三阻抗结构的双端口振荡器
Pub Date : 2014-08-01 DOI: 10.1109/ICED.2014.7015787
L. Said, A. Radwan, A. Madian, A. Soliman
This paper investigates the general analysis of the three impedance common B oscillators based on two port network. The concept is applied for 12 different impedance structures to obtain a second order oscillator where the condition and the frequency of oscillation are studied for each case. Then three special cases of two-port networks whose transmission matrices contain two non-zero elements are studied which represent MOS, BJT and gyrator circuits where six cases only can be adapted to have oscillation using gyrators. The effect on non-idealities of the current conveyor used to build gyrator on the condition and the frequency of oscillation is also studied. Finally three different cases are validated using the circuit simulations which match the theoretical study.
本文研究了基于双端口网络的三阻抗公共B振荡器的一般分析。将这一概念应用于12种不同的阻抗结构,得到一个二阶振荡器,并研究了每种情况下振荡的条件和频率。然后研究了传输矩阵包含两个非零元素的两端口网络的三种特殊情况,即MOS、BJT和旋转电路,其中只有六种情况可以使用旋转器来适应振荡。研究了振动条件和振动频率对构建旋转器所用电流输送机非理想性的影响。最后通过电路仿真验证了三种不同的情况,与理论研究结果相吻合。
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引用次数: 3
A review and survey of routing techniques in transparent core optical networks: Evolution, perspectives and frontiers 透明核心光网络路由技术综述:发展、展望与前沿
Pub Date : 2014-08-01 DOI: 10.1109/ICED.2014.7015832
M. R. I. Mat Jusoh, M. N. Mohd Warip, R. Ahamd, A. W. Che Abdul Rahman, P. Ehkan
In this survey, we presents a framework that proposes a guidelines and recommendation for the Routing Techniques perspectives in optical networks. Several subject are discussed in detail in this paper. A first important topic is the fundamental of Optical Routing techniques for network planning and optimization has recently attracted intensive research interest particularly in the area of intelligent control plane. A second important issues is the routing problem in networks with static, incremental and dynamic. In addition, we investigate several routing techniques by comparing in term of their operation, characteristics and mechanisms. Finally, this survey contributes to appropriate knowledge and challenges in legacy optical networks and towards future research development.
在这项调查中,我们提出了一个框架,为光网络中的路由技术前景提出了指导方针和建议。本文对几个问题进行了详细的讨论。第一个重要的课题是光路由技术在网络规划和优化方面的基础,近年来在智能控制平面领域引起了广泛的研究兴趣。第二个重要问题是静态、增量和动态网络中的路由问题。此外,我们还研究了几种路由技术,比较了它们的操作、特点和机制。最后,这项调查有助于适当的知识和挑战,传统的光网络和未来的研究发展。
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引用次数: 2
Multi channel ultrasonic sensing system for wall features extraction 用于墙体特征提取的多通道超声传感系统
Pub Date : 2014-08-01 DOI: 10.1109/ICED.2014.7015829
R. Visvanathan, S. M. Mamduh, K. Kamarudin, M. M. Razali, A. Yeon, A. Zakaria, L. Kamarudin, S. Shukor, A. Shakaff, F. Saad, N. A. Rahim
Ultrasonic sensor is one of the most cost-effective sensor used to obtain range information and obstacle avoidance. Due to its simplicity, this sensor is widely used in mobile robot applications to acquire environment features and mapping. Although the sensor can track a still or moving target, it does not provide information on the shape and pattern of the detected object. This paper proposes and highlights a low cost method using an array of ultrasonic sensors to be embedded on multiple robots for wall features extraction. Instead of using a single sensor, multiple sensors are used to increase the accuracy and improve coverage on the field of view of the sensor. More information can be extracted such as bearing angle of walls and possibly the shape of an object. A multiple pulse transmit and instantaneous multiple echo receive approach is implemented. The experimental results prove that this method is able to extract different type of wall features, accurately.
超声传感器是用于获取距离信息和避障的最经济有效的传感器之一。由于其简单性,该传感器被广泛应用于移动机器人的环境特征获取和映射。虽然传感器可以跟踪静止或移动的目标,但它不能提供有关被探测物体的形状和图案的信息。本文提出并强调了一种低成本的方法,即在多个机器人上嵌入一组超声波传感器来提取墙壁特征。使用多个传感器代替单个传感器,以提高精度并改善传感器视野的覆盖范围。可以提取更多的信息,如墙壁的承重角度,可能还有物体的形状。实现了一种多脉冲发射和瞬时多回波接收方法。实验结果表明,该方法能够准确地提取不同类型的壁面特征。
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引用次数: 1
UWB channel measurement and development of scatterer identification algorithm UWB信道测量及散射体识别算法的开发
Pub Date : 2014-08-01 DOI: 10.1109/ICED.2014.7015860
Y. Zahedi, R. Ngah, Uche Oknonkwo, S. Nunoo, M. Mokayef
Ultra wideband is a promising technology for achieving high data rate communication. When channel measurements are conducted, the channel values can be extracted using CLEAN deconvolution algorithm. However, artifact paths can be generated during this process. These artifact paths are registered as channel element values representing a reflected signal from a scatterer. In reality, these mentioned paths does not represent a real scattering environment which affects accurate channel modeling. Therefore, removing the artifact paths is important to conserve better and more real scattering environment. In this paper, a scattering identification algorithm that can be used upon CLEAN algorithm is presented. It has been developed based on the geometric elliptical modeling approach. Results show that the developed algorithm can remove additional paths in a particular delay bin and conserve one channel values in that bin.
超宽带是实现高数据速率通信的一种很有前途的技术。在进行通道测量时,可以使用CLEAN反褶积算法提取通道值。然而,工件路径可以在此过程中生成。这些伪路径被注册为信道元素值,表示来自散射器的反射信号。在现实中,这些路径并不能代表真实的散射环境,从而影响信道的精确建模。因此,去除伪影路径对于保持更好、更真实的散射环境是非常重要的。本文提出了一种适用于CLEAN算法的散射识别算法。它是基于几何椭圆建模方法开发的。结果表明,该算法可以去除特定延迟仓中的附加路径,并在该延迟仓中保留一个信道值。
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引用次数: 0
Potential of urine dielectric properties in classification of stages of breast carcinomas 尿介电特性在乳腺癌分期分类中的潜力
Pub Date : 2014-08-01 DOI: 10.1109/ICED.2014.7015819
Ausilah Al-Fraihat, A. Wesam Al-Mufti, U. Hashim, T. Adam
Some evidences have been found that urine can be used as a biomarker for the detection of many types of diseases. The purpose of this study is to use permittivity of urine to assess whether different stages of breast cancer are significantly different. Changes in electrical resistance of urine samples to applied microwaves were measured over a frequency range between 10MHz to 20GHz. This is carried out by the measurement of samples' response to applied microwave energy using network vector analyzer. SPSS was used to find out the significant difference in urine permittivity values across different stages of breast cancer. The results show significant difference between stage 1 and stage 2 in all dielectric parameters of urine permittivity. Significant difference was also found between stage 2 and stage 3 in both dielectric constant and loss factor parameters while the significant difference between stage 1 and stage 3 only exists in loss factor parameter. The results suggest that it is possible to estimate the stage of breast cancer based on the dielectric properties of urine.
有证据表明,尿液可以作为多种疾病检测的生物标志物。本研究的目的是利用尿液的介电常数来评估不同阶段的乳腺癌是否有显著差异。在10MHz至20GHz的频率范围内测量了尿样对微波的电阻变化。这是通过使用网络矢量分析仪测量样品对外加微波能量的响应来实现的。采用SPSS统计软件分析不同乳腺癌分期患者尿液介电常数值的差异。结果表明,1期和2期尿液介电常数各项介电参数均有显著性差异。第2级和第3级在介电常数和损耗因子参数上也存在显著差异,而第1级和第3级仅在损耗因子参数上存在显著差异。结果表明,可以根据尿液的介电性质来估计乳腺癌的分期。
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引用次数: 2
期刊
2014 2nd International Conference on Electronic Design (ICED)
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