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2016 IEEE Student Conference on Research and Development (SCOReD)最新文献

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Multi wavelength Laser Utilizing Fabry-Pérot Interferometer in Hybrid Raman and Erbium Doped Fiber Gains 利用fabry - p<s:1>干涉仪实现混合喇曼和掺铒光纤增益的多波长激光器
Pub Date : 2016-12-01 DOI: 10.1109/SCORED.2016.7810040
M. F. Ibrahim, M. I. Md Ali, N. F. Naim
This paper demonstrates and discusses a generation of multi wavelength Laser Utilizing Fabry-Pérot Filter in Hybrid Raman and Erbium Doped Fiber Gains has been proposed and investigated experimentally. The Hybrid Raman-Erbium Doped Fiber (EDF) gain produce the stability of the ring cavity laser at room temperature. A Fabry-Pérot (F-P) Filter as a comb filter and a Gain Flattening filter form a resonant cavity is producing a stable Multi wavelength output. The key features of multi wavelength laser are high Side-Mode Suppression Ratio (SMSR), smaller Free Spectral Range (FSR), and narrow line width had been discussed about and studied.
本文论证并讨论了在混合拉曼和掺铒光纤增益中利用法布里-帕姆罗滤波器产生多波长激光器的方法,并进行了实验研究。混合喇曼掺铒光纤(EDF)增益使环形腔激光器在室温下具有稳定性。F-P滤波器作为梳状滤波器和增益平坦滤波器形成谐振腔,产生稳定的多波长输出。多波长激光器的主要特点是高边模抑制比(SMSR)、小自由光谱范围(FSR)和窄线宽。
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引用次数: 1
Construction of partial discharge measurement system under influence of cylindrical metal particle in transformer oil 变压器油中圆柱形金属颗粒影响下局部放电测量系统的构建
Pub Date : 2016-12-01 DOI: 10.1109/SCORED.2016.7810071
K. Azmi, D. Ishak, M. Kamarol, A. Zuhairi
This paper reported the construction of partial discharge measurement system under influence of cylindrical metal particle in transformer oil. The partial discharge of free cylindrical metal particle in the uniform electric field under AC applied voltage was studied in this paper. The partial discharge inception voltage (PDIV) for the single particle was measure to be 11kV. The typical waveform of positive PD and negative PD was also obtained. The result shows that the magnitude of negative PD is higher compared to positive PD. The observation on cylindrical metal particle movement revealed that there were a few stages of motion process involved.
本文报道了变压器油中圆柱形金属颗粒影响下局部放电测量系统的构建。本文研究了在交流电压作用下,自由圆柱形金属颗粒在均匀电场中的局部放电现象。测定了单颗粒局部放电起始电压(PDIV)为11kV。得到了PD阳性和PD阴性的典型波形。结果表明,与正PD相比,负PD的强度更高。通过对圆柱形金属颗粒运动的观察,发现其运动过程包含几个阶段。
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引用次数: 4
Development of a novel component carrier selection algorithm in Long Term Evolution-Advanced (LTE-A) with Carrier Aggregation 基于载波聚合的LTE-A载波选择算法研究
Pub Date : 2016-12-01 DOI: 10.1109/SCORED.2016.7810097
Mhd Zaher Al Katsha, H. Ramli
Carrier Aggregation (CA), which is a method that aggregates multiple Component Carriers (CCs) of the same or different frequency bands, is one of the Long Term Evolution-Advanced (LTE-Advanced) key features. It allows the LTE-Advanced to support wider transmission bandwidth. Another important requirement is that the system needs to support a mixture of LTE-Advanced and the legacy Long Term Evolution (LTE) users simultaneously. The LTE-Advanced users can transmit packets on all of the available CCs whereas the LTE users are limited to transmit packets on a single CC. At the early stage of migration, there will be many LTE users in the LTE-Advanced system. Therefore, CC selection algorithm that is responsible to assign a CC to each newly-arrived legacy LTE users is becoming of paramount importance in the LTE-Advanced system. The existing CC selection algorithms can slightly provide good mobile cellular performance in terms of maximizing the throughput and balancing the load. To further improve the LTE-Advanced performance, this paper proposes a novel CC selection algorithm that takes the channel quality and traffic load in each CC into consideration. It was shown via simulation that the proposed algorithm can significantly improve the downlink LTE-Advanced performance as compared to the conventional CC selection algorithms.
CA (Carrier Aggregation)是LTE-Advanced的关键特性之一,是一种将多个相同或不同频段的cc (Component Carrier)聚合在一起的方法。允许LTE-Advanced支持更宽的传输带宽。另一个重要要求是,系统需要同时支持LTE- advanced和传统长期演进(LTE)用户的混合。LTE- advanced用户可以在所有可用的CC上传输数据包,而LTE用户只能在单个CC上传输数据包。在迁移初期,LTE- advanced系统中会有很多LTE用户。因此,负责为每个新到达的传统LTE用户分配CC的CC选择算法在LTE- advanced系统中变得至关重要。现有的CC选择算法在吞吐量最大化和负载均衡方面可以提供较好的移动蜂窝性能。为了进一步提高LTE-Advanced的性能,本文提出了一种新的CC选择算法,该算法考虑了每个CC中的信道质量和流量负载。仿真结果表明,与传统的CC选择算法相比,该算法可以显著提高下行链路LTE-Advanced的性能。
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引用次数: 9
Closed-loop color control of an RGB luminaire using sensors onboard a mobile computing system 利用移动计算系统上的传感器实现RGB灯具的闭环色彩控制
Pub Date : 2016-09-18 DOI: 10.1109/SCORED.2016.7810062
Samuel Jia Wei Tang, K. Y. Ng, V. Kalavally, J. Parkkinen
LED lamps for general room lighting is increasingly popular due to their many advantages including their tunability and color mixing abilities over their predecessors of halogen and fluorescent bulbs. Studies have shown that different color lighting have various effects on humans, but room lighting conditions can vary due to LED color shift or other lighting factors. This paper presents a novel closed-loop control algorithm using a typical Android smartphone camera to control an RGB luminaire. When tested in a controlled lab environment, it was able to produce an average chromaticity difference Δu',v' of 0.0225 to the selected colors.
用于一般室内照明的LED灯越来越受欢迎,因为它们具有许多优点,包括它们的可调性和色彩混合能力,超过了它们的前辈卤素和荧光灯泡。研究表明,不同颜色的照明对人体有不同的影响,但由于LED的色移或其他照明因素,室内照明条件会有所不同。本文提出了一种新颖的闭环控制算法,利用典型的Android智能手机摄像头控制RGB灯具。当在受控的实验室环境中进行测试时,它能够产生0.0225的平均色度差Δu',v'到选定的颜色。
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引用次数: 2
Cancelable iris Biometrics based on data hiding schemes 基于数据隐藏方案的可取消虹膜生物识别
Pub Date : 2016-01-09 DOI: 10.1109/SCORED.2016.7810049
Bismita Choudhury, P. Then, V. Raman, B. Issac, M. K. Haldar
The Cancelable Biometrics is a template protection scheme that can replace a stolen or lost biometric template. Instead of the original biometric template, Cancelable biometrics stores a modified version of the biometric template. In this paper, we have proposed a Cancelable biometrics scheme for Iris based on the Steganographic technique. This paper presents a non-invertible transformation function by combining Huffman Encoding and Discrete Cosine Transformation (DCT). The combination of Huffman Encoding and DCT is basically used in steganography to conceal a secret image in a cover image. This combination is considered as one of the powerful non-invertible transformation where it is not possible to extract the exact secret image from the Stego-image. Therefore, retrieving the exact original image from the Stego-image is nearly impossible. The proposed non-invertible transformation function embeds the Huffman encoded bit-stream of a secret image in the DCT coefficients of the iris texture to generate the transformed template. This novel method provides very high security as it is not possible to regenerate the original iris template from the transformed (stego) iris template. In this paper, we have also improved the segmentation and normalization process.
可取消生物识别是一种模板保护方案,可以替换被盗或丢失的生物识别模板。与原始的生物识别模板不同,Cancelable生物识别存储了修改后的生物识别模板。本文提出了一种基于隐写技术的虹膜可取消生物识别方案。结合霍夫曼编码和离散余弦变换,给出了一种不可逆变换函数。在隐写术中,主要采用霍夫曼编码和DCT相结合的方法来隐藏封面图像中的秘密图像。这种组合被认为是一种强大的不可逆变换,在这种变换中,不可能从stego图像中提取出精确的秘密图像。因此,从stego图像中检索精确的原始图像几乎是不可能的。提出的不可逆变换函数将秘密图像的霍夫曼编码码流嵌入到虹膜纹理的DCT系数中,生成变换模板。该方法不可能从转换后的虹膜模板中重新生成原始虹膜模板,具有很高的安全性。在本文中,我们还改进了分割和归一化过程。
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引用次数: 13
Knowledge management in a multimedia environment: some key research issues 多媒体环境下的知识管理:若干关键研究问题
Pub Date : 2002-11-07 DOI: 10.1109/SCORED.2002.1033040
M. Rodd, A. Miskin, J. Tomlinson
The IEE is actively re-engineering itself to remain, in an Internet-driven era, a premier provider of lifelong career support for its ever-increasing, worldwide membership. To do this, the IEE must provide unique and valued support for academics, teachers, researchers and industrialists at all stages of their careers. The Internet, with its rich potential, offers a wonderful platform on which to deliver this support, but the experience of many professional users is still poor. In particular, the delivery of relevant technical information and educational/training support is still generally relatively unsuccessful. With this mission in mind, the IEE has introduced over thirty fully managed Professional Networks (PNs): Internet-enabled communities, offering access to a wide range of information resources as well as facilities to support community interaction. A wide range of services has been introduced to explore technical capabilities and real costs, as well as to test user acceptance. This paper discusses these experiences and reviews the fundamental issues that are being raised, suggesting where work needs to be undertaken to satisfy these real requirements. In particular, it explores issues of content management, and highlights the need for a range of new techniques.
在互联网驱动的时代,IEE正在积极地重新设计自己,以保持为其不断增长的全球会员提供终身职业支持的首要供应商。为此,IEE必须为学者、教师、研究人员和实业家在其职业生涯的各个阶段提供独特和有价值的支持。具有丰富潜力的互联网提供了一个很好的平台来提供这种支持,但是许多专业用户的体验仍然很差。特别是,提供有关的技术资料和教育/培训支助一般来说仍然比较不成功。带着这一使命,IEE推出了30多个完全管理的专业网络(PNs):支持互联网的社区,提供访问广泛的信息资源和设施,以支持社区互动。已经引入了广泛的服务,以探索技术能力和实际成本,并测试用户的接受程度。本文讨论了这些经验,并回顾了正在提出的基本问题,建议在哪里需要进行工作以满足这些实际需求。特别地,它探讨了内容管理问题,并强调了对一系列新技术的需求。
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引用次数: 3
Distributed MPEG-2 video encoding on Microsoft Windows platform Microsoft Windows平台上的分布式MPEG-2视频编码
Pub Date : 2002-11-07 DOI: 10.1109/SCORED.2002.1033168
C. C. Chew, A. Singh, B. Mohamed, M. Zabidi
The MPEG-2 video standard developed by the Moving Picture Experts Group (MPEG) specifies the coded bit stream for high quality digital video. The encoding of MPEG-2 video needs a lot of processor power and mostly depends on the PC's processor and its clock speed. To makes the encoding process faster and better on the Microsoft Windows platform, a distributed computer system architecture can be implemented. By making use of the existing low cost PC inside computer laboratories with LAN, the video encoding processing can be divided to every PC that is idle and can fully utilize them. When each PC finishes the encoding process, the result is sent back to the main PC that distributes the job. Instead of doing the encoding job alone, distributing the whole encoding job to a few PC or more is much better and faster. It also saves a lot of time in carrying out such a heavy-duty process.
由运动图像专家组(MPEG)开发的MPEG-2视频标准规定了高质量数字视频的编码比特流。MPEG-2视频的编码需要大量的处理器功率,并且主要取决于PC的处理器和时钟速度。为了使编码过程在Microsoft Windows平台上更快更好地进行,可以实现分布式计算机系统架构。利用计算机实验室现有的具有局域网的低成本PC机,将视频编码处理工作分配到每一台空闲的、可以充分利用的PC机上。当每台PC机完成编码过程后,结果被发送回分配任务的主PC机。与其单独完成编码工作,不如将整个编码工作分配到几台或更多台PC上,这样更好更快。它还节省了大量的时间来执行这样一个繁重的过程。
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引用次数: 2
Mathematical analysis of network traffic 网络流量的数学分析
Pub Date : 2002-11-07 DOI: 10.1109/SCORED.2002.1033104
S. Mian, M. Ghassempoory, M. Bentall
The level of complexity in computer networks is rising and the mathematics needed to model the network traffic behaviour is not an exact science. This paper aims to bridge the gap between mathematics and engineering by illustrating some of the problems that exist with conventional traffic modeling, and show how to obtain informative network statistics via mathematical tools such as the Hurst (1951) parameter and the autocorrelation function. We show how aggregated traffic behaves over various time scales and focus on certain protocols to observe their impact on the network at various ingress/egress points on our university network. Furthermore, we present the many analytical tools that are useful in characterising these systems.
计算机网络的复杂程度正在上升,而为网络流量行为建模所需的数学并不是一门精确的科学。本文旨在通过说明传统交通建模存在的一些问题,弥合数学与工程之间的差距,并展示如何通过Hurst(1951)参数和自相关函数等数学工具获得信息网络统计。我们展示了聚合流量在不同时间尺度上的行为,并重点关注某些协议,以观察它们在我们大学网络的不同入口/出口点对网络的影响。此外,我们提出了许多分析工具,是有用的表征这些系统。
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引用次数: 1
Design of artificial neural network (ANN) based rotor speed estimator for DC drive 基于人工神经网络的直流电机转子转速估计器设计
Pub Date : 2002-11-07 DOI: 10.1109/SCORED.2002.1033083
S.M. Mokhsin, R.A. Hadi, B.N. Sheikh Rahimullah
This paper describes the design of ANN based rotor speed estimator for separately excited DC motor using MATLAB Toolbox. A comparative analysis of the DC motor drive's behavior with and without ANN based was performed. It is shown that rotor speed feedback by suitably trained ANN enables very good quality of the drive performance over a wide range operating conditions for both open and close loop systems. For the purpose of the training, the Levenberg-Marquardt back-propagation algorithm was used. A standard three layer feed-forward neural network with tan-sigmoid (tansig) activation functions in hidden layer and purelin at the output layer was applied in this design. The result shows that by using only one hidden layer, minimum error can be obtained and the performance of the estimator is excellent. The proposed solution seems to be attractive to the conventional speed estimator, resulting a mechanically simpler motor and consequently increasing the degree of reliability for the whole drive systems.
本文利用MATLAB工具箱设计了一种基于人工神经网络的分励直流电动机转子转速估计器。对比分析了基于人工神经网络和不基于人工神经网络的直流电动机驱动性能。结果表明,通过适当训练的人工神经网络进行转子转速反馈,可以使开环和闭环系统在大范围的运行条件下具有很好的驱动性能。为了训练的目的,我们使用了Levenberg-Marquardt反向传播算法。本设计采用一种标准的三层前馈神经网络,隐层采用tansig激活函数,输出层采用purelin。结果表明,仅使用一个隐层就可以获得最小的误差,并且估计器的性能很好。所提出的解决方案似乎对传统的速度估计器很有吸引力,从而产生了机械上更简单的电机,从而提高了整个驱动系统的可靠性。
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引用次数: 1
Consumer preferences for energy efficient room air conditioner in Malaysia: a conjoint approach 马来西亚消费者对节能房间空调的偏好:一种联合方法
Pub Date : 2002-11-07 DOI: 10.1109/SCORED.2002.1033112
T. Hock, M. Shah bin Majid, H. Abd Rahman
In order to ensure the success of energy efficiency standards and labeling program, a detailed consumer analysis of the room air conditioner market should be carried out. It is essential to know what factors influence preferences for room air conditioner, so that a program can be devised to increase the market share for an energy efficient room air conditioner. Previous researchers typically have used attitude and opinion surveys to investigate consumers' perceived importance of product attributes. However, these approaches do not require consumers to trade-off among different attributes. In this study, conjoint analysis was used to analyze consumers' preferences for room air conditioners described by a set of 5 attributes, examining the relative importance as well as the trade-off among these attributes. Among all attributes, price is the most important factor in purchasing a room air conditioner. However, different consumer groups attach different relative importance to these attributes was observed.
为了确保能效标准和标识计划的成功实施,应对室内空调市场进行详细的消费者分析。了解影响空调偏好的因素是至关重要的,这样可以设计一个方案来增加节能空调的市场份额。以前的研究人员通常使用态度和意见调查来调查消费者对产品属性的感知重要性。然而,这些方法不需要消费者在不同属性之间进行权衡。在本研究中,联合分析被用来分析消费者对房间空调的偏好,由一组5个属性,检查相对重要性以及这些属性之间的权衡。在所有属性中,价格是购买房间空调最重要的因素。然而,不同的消费者群体对这些属性的相对重要性是不同的。
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引用次数: 1
期刊
2016 IEEE Student Conference on Research and Development (SCOReD)
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