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2013 8th International Conference on Computer Engineering & Systems (ICCES)最新文献

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A semantic-based Software-as-a-Service (SaaS) discovery and selection system 基于语义的软件即服务(SaaS)发现和选择系统
Pub Date : 2013-11-01 DOI: 10.1109/ICCES.2013.6707171
Y. Afify, I. Moawad, N. Badr, M. Tolba
With the proliferation of Software-as-a-Service in the cloud environment, users find it tiresome and time consuming to search for the right service that satisfies all their requirements. In addition, services may provide the same functionality but differ in their characteristics or the Quality of Service attributes (QoS) they offer. In this paper, we propose a semantic-based system that facilitates the SaaS publication, discovery and selection processes. To achieve these goals, we developed a unified ontology that combines services domain knowledge, SaaS characteristics, QoS metrics and real SaaS offers. A hybrid service matchmaking algorithm is introduced based on the proposed ontology. It integrates semantic-based metadata and ontology-based matching. Prototypical implementation results demonstrate the effectiveness of the proposed system.
随着云环境中软件即服务的普及,用户发现寻找满足其所有需求的正确服务既烦人又耗时。此外,服务可能提供相同的功能,但在其特征或所提供的服务质量属性(QoS)方面有所不同。在本文中,我们提出了一个基于语义的系统,促进了SaaS的发布、发现和选择过程。为了实现这些目标,我们开发了一个统一的本体,它结合了服务领域知识、SaaS特征、QoS指标和真正的SaaS服务。基于提出的本体,提出了一种混合服务匹配算法。它集成了基于语义的元数据和基于本体的匹配。原型实现结果证明了该系统的有效性。
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引用次数: 36
SAODV and modified SAODV performance comparison SAODV和修改后的SAODV性能比较
Pub Date : 2013-11-01 DOI: 10.1109/ICCES.2013.6707180
Ayman A. Hanafy, Marianne A. Azer, S. Noureldin
Routing plays a vital role in ad hoc networks and Ad hoc On-demand Distance Vector (AODV) protocol is considered one of the most famous routing protocols in ad hoc networks. Unfortunately it doesn't specify security measures. This has motivated the researchers to design secured version of AODV. However Security always collides with performance. The higher the security level is, the lower the performance level. This paper presents a performance comparison between Secure AODV (SAODV) and Modified SAODV (MSAODV).
路由在自组织网络中起着至关重要的作用,自组织按需距离矢量(AODV)协议是自组织网络中最著名的路由协议之一。不幸的是,它没有指定安全措施。这促使研究人员设计安全版本的AODV。然而,安全性总是与性能相冲突。安全级别越高,性能级别越低。本文对安全AODV (SAODV)和改进SAODV (MSAODV)进行了性能比较。
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引用次数: 1
Recent developments in sign language recognition systems 手语识别系统的最新发展
Pub Date : 2013-11-01 DOI: 10.1109/ICCES.2013.6707157
M. Tolba, A. S. Elons
Automated translation systems for sign languages are important in a world that is showing a continuously increasing interest in removing barriers faced by physically challenged individuals in communicating and contributing to the society and the workforce. These systems can greatly facilitate the communication between the vocal and the nonvocal communities. For the hearing-impaired, such systems can serve as the equivalent of speech-recognition systems used by speaking people to interact with machines in a more natural way. Few research projects tried to develop a translation system from and to visual sign language. Very few of these attempts were on Arabic sign language. None of them succeeded to develop a reliable industrial product. This review explores these trials and proposes clear recommendations to convert the lab research to a real product useful to the community.
当今世界对消除残疾人在交流和为社会和劳动力做出贡献方面面临的障碍越来越感兴趣,手语自动翻译系统非常重要。这些系统可以极大地促进发声社区和非发声社区之间的交流。对于听力受损的人来说,这样的系统可以作为语音识别系统的等同物,用于说话的人以一种更自然的方式与机器互动。很少有研究项目试图开发视觉手语的翻译系统。这些尝试中很少是针对阿拉伯手语的。他们中没有一个成功地开发出可靠的工业产品。这篇综述探讨了这些试验,并提出了明确的建议,以将实验室研究转化为对社区有用的实际产品。
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引用次数: 30
Minimizing molecular potential energy function using genetic Nelder-Mead algorithm 最小化分子势能函数使用遗传Nelder-Mead算法
Pub Date : 2013-11-01 DOI: 10.1109/ICCES.2013.6707197
A. Ali, A. Hassanien
This paper presents a new algorithm for minimizing the molecular potential energy function. The new algorithm combines a global search genetic algorithm with a local search Nelder-Mead algorithm in order to search for the global minimum of molecular potential energy function. The minimization of molecular potential energy function problem is very challenging, since the number of local minima grows exponentially with the molecular size. The new algorithm is called GNMA (Genetic Nelder-Mead Algorithm). Such hybridization enhances the power of the search technique by combining the wide exploration capabilities of Genetic Algorithm (GA) and the deep exploitation capabilities of Nelder-Mead algorithm. The proposed algorithm can reach the global or near-global optimum for the molecular potential energy function with up to 200 degrees of freedom. The performance of the proposed algorithm has been compared with other 9 existing methods from the literature. The numerical results show that the proposed algorithm is promising and produce high quality solutions with low computational costs.
提出了一种新的最小化分子势能函数的算法。该算法将全局搜索遗传算法与局部搜索Nelder-Mead算法相结合,以搜索分子势能函数的全局最小值。分子势能函数的最小化问题是一个非常具有挑战性的问题,因为局部极小值的数目随着分子的大小呈指数增长。这种新算法被称为GNMA (Genetic Nelder-Mead algorithm)。这种杂交结合了遗传算法(GA)的广泛搜索能力和Nelder-Mead算法的深度挖掘能力,增强了搜索技术的能力。该算法可以在200个自由度的范围内达到分子势能函数的全局或近全局最优。将该算法的性能与文献中其他9种方法进行了比较。数值结果表明,该算法具有较好的应用前景,能够以较低的计算成本得到高质量的解。
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引用次数: 8
Cloud task scheduling based on ant colony optimization 基于蚁群优化的云任务调度
Pub Date : 2013-11-01 DOI: 10.1109/ICCES.2013.6707172
Medhat A. Tawfeek, A. El-Sisi, A. Keshk, F. Torkey
Cloud computing is the development of distributed computing, parallel computing and grid computing, or defined as the commercial implementation of these computer science concepts. One of the fundamental issues in this environment is related to task scheduling. Cloud task scheduling is an NP-hard optimization problem, and many meta-heuristic algorithms have been proposed to solve it. A good task scheduler should adapt its scheduling strategy to the changing environment and the types of tasks. In this paper a cloud task scheduling policy based on ant colony optimization algorithm compared with different scheduling algorithms FCFS and round-robin, has been presented. The main goal of these algorithms is minimizing the makespan of a given tasks set. Ant colony optimization is random optimization search approach that will be used for allocating the incoming jobs to the virtual machines. Algorithms have been simulated using Cloudsim toolkit package. Experimental results showed that the ant colony optimization outperformed FCFS and round-robin algorithms.
云计算是分布式计算、并行计算和网格计算的发展,或者定义为这些计算机科学概念的商业实现。这个环境中的一个基本问题与任务调度有关。云任务调度是一个NP-hard优化问题,人们提出了许多元启发式算法来解决这个问题。一个好的任务调度器应该使其调度策略适应不断变化的环境和任务类型。本文提出了一种基于蚁群优化算法的云任务调度策略,并与不同的调度算法FCFS和轮循算法进行了比较。这些算法的主要目标是最小化给定任务集的最大完成时间。蚁群优化是一种随机优化搜索方法,用于将传入的作业分配给虚拟机。使用Cloudsim工具包对算法进行了模拟。实验结果表明,蚁群优化算法优于FCFS和轮循算法。
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引用次数: 310
Ensemble classifiers for biomedical data: Performance evaluation 生物医学数据的集成分类器:性能评估
Pub Date : 2013-11-01 DOI: 10.1109/ICCES.2013.6707198
Hanaa Ismail Elshazly, A. Elkorany, A. Hassanien, A. Azar
Machine Learning concept offers the biomedical research field a great support. It provides many opportunities for disease discovering and related drugs revealing. The machine learning medical applications had been evolved from the physician needs and motivated by the promising results extracted from empirical studies. Medical support systems can be provided by screening, medical images, pattern classification and microarrays gene expression analysis. Typically medical data is characterized by its huge dimensionality and relatively limited examples. Feature selection is a crucial step to improve classification performance. Recent studies in machine learning field about classification process emerged a novel strong classifier scheme called the ensemble classifier. In this paper, a study for the performance of two novel ensemble classifiers namely Random Forest (RF) and Rotation Forest (ROT) for biomedical data sets is tested with five medical datasets. Three different feature selection methods were used to extract the most relevant features in each data set. Prediction performance is evaluated using accuracy measure. It was observed that ROT achieved the highest classification accuracy in most tested cases.
机器学习概念为生物医学研究领域提供了极大的支持。它为疾病的发现和相关药物的开发提供了许多机会。机器学习的医学应用是从医生的需求发展而来的,并受到实证研究中有希望的结果的推动。医疗支持系统可以通过筛选、医学图像、模式分类和微阵列基因表达分析来提供。医学数据的典型特点是维度巨大,样本相对有限。特征选择是提高分类性能的关键步骤。近年来,机器学习领域对分类过程的研究出现了一种新的强分类器方案——集成分类器。本文研究了随机森林(Random Forest, RF)和旋转森林(Rotation Forest, ROT)两种新型集成分类器在生物医学数据集上的性能,并对5个医学数据集进行了测试。使用三种不同的特征选择方法提取每个数据集中最相关的特征。使用准确度度量来评估预测性能。我们观察到,在大多数测试病例中,ROT达到了最高的分类准确率。
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引用次数: 21
Design and performance analysis of hybrid fuzzy robust controller for hydraulic system against variable loads 变负载液压系统混合模糊鲁棒控制器的设计与性能分析
Pub Date : 2013-11-01 DOI: 10.1109/ICCES.2013.6707192
M. Abdelhameed, M. Abdelaziz, S. Maged
The continuous motion of hydraulic implements in industrial is important parameters which affect productivity of mould casting machine. A lab setup is designed to evaluate a position control technique of a hydraulic cylinder at different load patterns. The lab setup consists of two loops, the first loop represents the controlled cylinder and the second loop represents the control of the loading cylinder. Robust and hybrid fuzzy robust controllers are developed to reduce the synchronization errors in cylinders positions to acceptable values. The second loop is controlled so that simulates variable loads with different pattern. A model representing the lab setup is developed and the system response is verified using experimental results.
在工业上,液压装置的连续运动是影响铸模机生产率的重要参数。设计了一个实验装置来评估液压缸在不同负载模式下的位置控制技术。实验装置由两个回路组成,第一个回路代表受控气缸,第二个回路代表加载气缸的控制。设计了鲁棒控制器和混合模糊鲁棒控制器,将气缸位置的同步误差减小到可接受的范围内。对第二个回路进行控制,以模拟不同模式的可变负载。建立了一个代表实验室设置的模型,并用实验结果验证了系统的响应。
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引用次数: 1
Generic opponent modelling approach for real time strategy games 实时策略游戏的通用对手建模方法
Pub Date : 2013-11-01 DOI: 10.1109/ICCES.2013.6707164
Ghada M. Farouk, I. Moawad, M. Aref
One of the fundamental and challengeable research areas in Real Time Strategy (RTS) games is opponent modelling. Most current approaches to opponent modelling pretended inefficiency. They are either computationally expensive or required a numerous amount of online gameplays to start learn successful models. Unfortunately, most successful approaches also were game specific. They mainly depend on the expert's knowledge of the game. In this paper, a generic and adaptive opponent modelling approach for RTS games is proposed. It is a completely automated approach for learning the highly informative features of the opponent's behavior of any RTS game. Inspired by the case-based reasoning technique, a case base of different opponent models is constructed in the approach offline phase. The online phase (during gameplay) utilizes only this model base for opponent classification. To better cope with opponents that switch strategies, the approach keeps track of the performance after classification. To show how the proposed approach is beneficial, a case study called SPRING game case-study is presented.
对手建模是即时战略(RTS)游戏的一个基本且具有挑战性的研究领域。目前大多数对手建模方法都假装效率低下。它们要么在计算上很昂贵,要么需要大量的在线游戏才能开始学习成功的模型。不幸的是,大多数成功的方法都是针对特定游戏的。它们主要依赖于专家对游戏的了解。本文提出了一种通用的、自适应的即时战略游戏对手建模方法。这是一种完全自动化的方法,用于学习任何RTS游戏中对手行为的高度信息特征。受基于案例推理技术的启发,在方法离线阶段构建了不同对手模型的案例库。在线阶段(在游戏过程中)只使用这个模型库来对对手进行分类。为了更好地应对改变策略的对手,该方法跟踪分类后的表现。为了展示所建议的方法是如何有益的,本文提出了一个称为SPRING游戏案例研究的案例研究。
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引用次数: 6
Modeling and simulation of Photovoltaic/Thermal hybrid system 光伏/热混合系统建模与仿真
Pub Date : 2013-11-01 DOI: 10.1109/ICCES.2013.6707187
A. Bayoumi, M. Abdelaziz, M. Abdelhameed
In this paper an analytical model for a Photovoltaic/Thermal (PV/T) hybrid system is presented. The simulation in this work is based on an analytical model in solving the equations and determining the Photovoltaic (PV) cells characteristics using both MATLAB and COMSOL Multiphysics. COMSOL is simulating the electromagnetic waves produced by the Sun through solving Maxwell's equations in three dimensions. Beside that COMSOL is used in studying the material absorption capabilities and calculating the material absorption coefficient using its refractive index. In addition to the above a thermal analysis for the PV module and the piping water is presented where the input, output temperatures, rate of heat transfer, overall heat transfer coefficient and thermal efficiency are calculated. As a result, a significant enhancement in the total electrical efficiency is observed with acceptable increased in the output water temperature.
本文建立了光伏/热(PV/T)混合系统的解析模型。本工作的仿真是基于求解方程的解析模型,并使用MATLAB和COMSOL Multiphysics确定光伏电池的特性。COMSOL通过在三维空间中求解麦克斯韦方程组来模拟太阳产生的电磁波。此外,COMSOL还用于研究材料的吸收能力,并利用其折射率计算材料的吸收系数。除此之外,还对PV组件和管道水进行了热分析,其中计算了输入、输出温度、传热速率、总传热系数和热效率。结果,在输出水温可接受的提高下,观察到总电效率的显著提高。
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引用次数: 1
Robust blind image watermarking using DNA-encoding and discrete wavelet transforms 基于dna编码和离散小波变换的鲁棒盲图像水印
Pub Date : 2013-11-01 DOI: 10.1109/ICCES.2013.6707208
S. Hamad, A. Khalifa
Copyright protection techniques are in great demand due to the widespread illegal copying and communication of digital media. Due to their popularity, various watermarking methods have been proposed lately for digital images. Wavelet-based embedding techniques gained a lot of attention since they provide the perfect balance between imperceptibility and robustness. In this paper, we introduce an algorithm for hiding the complement of a DNA-encoded watermark data into the 3rd level resolution of the wavelet decomposition of a true color image. It applies a quantization operation on the sorted detail coefficients for an enhanced invisible embedding. The extraction process is carried out blindly without the need to refer to the original host image. Experimental results highlighted the excellent invisibility performance of the proposed algorithm. In addition, more than 90% of the embedded watermark survived even under high compression ratios. This outstanding performance continues in comparison with a number of similar methods.
由于数字媒体的非法复制和传播,对版权保护技术的需求很大。由于数字图像水印的普及,近年来人们提出了各种各样的数字图像水印方法。基于小波的嵌入技术由于在不可感知性和鲁棒性之间提供了完美的平衡而受到广泛关注。在本文中,我们介绍了一种将dna编码水印数据的补体隐藏到真彩色图像的小波分解的三级分辨率中的算法。它对排序后的细节系数进行量化操作,以增强不可见嵌入。提取过程是盲目进行的,不需要参考原始主机图像。实验结果表明,该算法具有良好的隐身性能。此外,即使在高压缩比下,嵌入的水印仍有90%以上的存续率。与许多类似的方法相比,这种出色的性能继续存在。
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引用次数: 2
期刊
2013 8th International Conference on Computer Engineering & Systems (ICCES)
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