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2011 World Congress on Information and Communication Technologies最新文献

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Hardware implementation of link aggregation in networks-on-chip 片上网络中链路聚合的硬件实现
Pub Date : 2011-12-01 DOI: 10.1109/WICT.2011.6141403
Ievgen V. Korotkyi, O. Lysenko
The link aggregation (LAG) technique for networks-on-chip (NoC) is described and investigated in the paper. It is shown that LAG permits to improve considerably the NoC saturation threshold due to connection of neighboring routers with the aid of multiple physical links. The proposed work has three main contributions. The first is the description of a structure and principle of operation of a NoC with LAG. The second is the comparative analysis of the synthesis results for Stratix IV FPGA. It is shown that hardware costs of LAG and virtual channel (VC) routers are comparable. The third is the evaluation of average latency and saturation threshold in LAG NoC (8×8 mesh). The simulation of System Verilog models indicates that saturation threshold in proposed approach increases by 152% compared to VC NoC.
介绍并研究了片上网络(NoC)中的链路聚合(LAG)技术。结果表明,由于多个物理链路的帮助下相邻路由器的连接,LAG允许显著提高NoC饱和阈值。拟议的工作有三个主要贡献。首先介绍了带LAG的NoC的结构和工作原理。第二部分是对Stratix IV FPGA合成结果的对比分析。结果表明,LAG路由器和虚拟信道路由器的硬件成本是相当的。三是对LAG NoC的平均潜伏期和饱和阈值的评估(8×8 mesh)。系统Verilog模型的仿真表明,该方法的饱和阈值比VC NoC提高了152%。
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引用次数: 6
Constraints and effects of partner selection on the emergence of structures in social environments 社会环境中伴侣选择对结构出现的制约和影响
Pub Date : 2011-12-01 DOI: 10.1109/WICT.2011.6141212
E. Tzafestas
In this work, we are exploring the internals and effects of partner selection on spatial and social dynamics and clashes. We are considering two different social settings: (a) one involving imitation dynamics that is exemplified by a modified Axelrod cultural simulation model extended with a Moore neighborhood, heterogeneous sets of cultural features per agent and a number of psychologically realistic, basic and more advanced, conceptual models of cultural affinity perception and imitation, and (b) one involving game-like interaction dynamics that is exemplified by a model of social noisy IPD interaction with an additional attraction mechanism that makes agents unconditionally cooperative toward attractive opponents. In both models, a simple mechanism of partner selection has been found to modify the social environment by allowing different types of social structures to emerge, such as fast built cultural homogeneous groups in the case of cultural simulation or groups of interacting cooperative agents that are attracted by one another in the case of IPD with attraction. We are identifying a number of cognitive factors that are used to model partner selection, namely memory depth, learning speed and openness, and we study the phenomena obtained. We are finally discussing how these factors may be studied and taken into account when designing complex sociotechnical systems.
在这项工作中,我们正在探索合作伙伴选择对空间和社会动态和冲突的内在和影响。我们正在考虑两种不同的社会环境:(a)一种涉及模仿动力学的模式,以改进的阿克塞尔罗德文化模拟模型为例,该模型扩展了摩尔邻域,每个主体的异质文化特征集,以及一些心理上现实的、基本的和更高级的文化亲和感知和模仿的概念模型;(b)一种涉及游戏式互动动力学的模式,以带有额外吸引力机制的社会嘈杂IPD互动模型为例,该机制使代理人无条件地与有吸引力的对手合作。在这两个模型中,我们都发现了一种简单的伴侣选择机制,通过允许不同类型的社会结构出现来改变社会环境,例如在文化模拟的情况下,快速建立的文化同质群体,或者在具有吸引力的IPD的情况下,相互作用的合作主体群体被彼此吸引。我们确定了一些用来模拟伴侣选择的认知因素,即记忆深度、学习速度和开放性,并研究了得到的现象。最后,我们将讨论在设计复杂的社会技术系统时如何研究和考虑这些因素。
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引用次数: 0
Image mining using association rule 基于关联规则的图像挖掘
Pub Date : 2011-12-01 DOI: 10.1109/WICT.2011.6141311
Nikhat Fatma Mumtaz Husain Shaikh, M. Nashipudimath
Image mining deals with the extraction of image patterns from a large collection of images. Clearly, image mining is different from low-level computer vision and image processing techniques because the focus of image mining is in extraction of patterns from large collection of images, whereas the focus of computer vision and image processing techniques is in understanding and / or extracting specific features from a single image. While there seems to be some overlaps between image mining and content-based retrieval (both are dealing with large collection of images), image mining goes beyond the problem of retrieving relevant images. In image mining, the goal is the discovery of image patterns that are significant in a given collection of images.
图像挖掘涉及从大量图像中提取图像模式。显然,图像挖掘不同于低级计算机视觉和图像处理技术,因为图像挖掘的重点是从大量图像中提取模式,而计算机视觉和图像处理技术的重点是从单个图像中理解和/或提取特定特征。虽然图像挖掘和基于内容的检索之间似乎有一些重叠(两者都处理大量图像),但图像挖掘超越了检索相关图像的问题。在图像挖掘中,目标是发现给定图像集合中重要的图像模式。
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引用次数: 8
Ablended-learning pedagogical model for French learning through an online interactive multimedia environment: Learner autonomy and efficacy 在线互动多媒体环境下法语学习的辅助学习教学模式:学习者自主与效能
Pub Date : 2011-12-01 DOI: 10.1109/WICT.2011.6141334
Vasumathi Badrinathan, A. Gole
This article is based on a study of a sample of students enrolled in a Distance and Open Learning Masters programme on computer applications at the University of Mumbai (IDOL). The students study French language as a compulsory subject in their course. Nurturing autonomous learners is an important goal for language teaching programmes. The article investigates if a distance learning programme helps learners achieve autonomy in a foreign language by studying students' reactions towards learning French through this course. The authors explore if the distance course structure makes students responsible for their learning, helps them develop metacognitive strategies, take proactive steps on their own- vital for the process of autonomization. The paper analyses the success and failure of the French learning programme and concludes with recommendations on an online interactive multimedia environment which could help improve the course technologically and academically and induce learner autonomy.
本文基于对孟买大学(IDOL)计算机应用远程开放学习硕士课程学生样本的研究。学生们把法语作为必修课来学习。培养自主学习者是语言教学的重要目标。本文通过研究学生对学习法语的反应来调查远程学习计划是否有助于学习者在外语学习中实现自主。作者探讨了远程课程结构是否使学生对自己的学习负责,帮助他们发展元认知策略,主动采取自己的步骤-这对自主化过程至关重要。本文分析了法语学习计划的成功和失败,并提出了在线交互式多媒体环境的建议,这有助于提高课程的技术和学术水平,并促进学习者的自主学习。
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引用次数: 2
Optimizing speech naturalness in voice user interface design: A weakly-supervised approach 优化语音用户界面设计中的语音自然度:一种弱监督方法
Pub Date : 2011-12-01 DOI: 10.1109/WICT.2011.6141225
M. Ekpenyong
Speech-enabled applications are gradually finding their way into the lives of today's society. One major concern that is likely to increase the acceptability and popularity of these products is how natural the products sound. This paper therefore concentrates on improving speech naturalness in voice user interface (VUI) designs. The reason for this is to enhance communication, as users will be interacting with a more human (natural) sounding system. Full implementation of a tone language synthesizer, using the Hidden Markov Model approach is presented. Results obtained from this implementation sounds promising with improved intelligibility and well-spoken utterances. The system is currently undergoing rigorous refinements to ensure adaptability and robustness of the design. We are optimistic that this paper shall expand our science and technology horizons and prepare us, the developing world for an in-depth research into the field of speech technologies that will certainly re-direct our livelihood.
支持语音的应用程序正逐渐进入当今社会的生活。可能增加这些产品的可接受性和受欢迎程度的一个主要问题是这些产品听起来有多自然。因此,本文主要研究如何提高语音用户界面(VUI)设计中的语音自然度。这样做的原因是为了加强沟通,因为用户将与更人性化(自然)的声音系统进行交互。使用隐马尔可夫模型方法实现了一个语音合成器。从这种实现中获得的结果听起来很有希望提高可理解性和良好的口语表达。该系统目前正在进行严格的改进,以确保设计的适应性和稳健性。我们乐观地认为,这篇论文将扩大我们的科学和技术视野,并为我们这些发展中国家深入研究语音技术领域做好准备,这必将改变我们的生计。
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引用次数: 3
MCDM based trust model for secure routing in Wireless Mesh Networks 基于MCDM的无线Mesh网络安全路由信任模型
Pub Date : 2011-12-01 DOI: 10.1109/WICT.2011.6141369
Shantanu Konwar, A. Paul, Sukumar Nandi, S. Biswas
Wireless Mesh Networks (WMNs) do not rely on any centralized administration and they are built by the connection of various static and mobile entities (i.e. nodes). The cooperation and coordination between these network entities is very essential to establish a secure routing path. Such distributed nature of WMNs increases the vulnerability of routing protocols. Modeling and computing trust in such a distributed environment is essential since the network is self-organizing, self-configuring and relies on multihop routing. Therefore, to ensure a secure route discovery and its maintenance, it is important to compute trustworthiness of individual nodes in a cooperative manner for discovering neighbors, selecting routers and announcing topology information in WMNs. In order to detect trustworthy nodes in the networks, we propose a model based on Multiple Criteria Decision Making (MCDM) which quantifies node behaviors into discrete quantity. The proposed scheme ensures detection of malicious and misbehaving nodes in the network which is verified through code simulation.
无线网状网络(WMNs)不依赖于任何集中管理,它们是由各种静态和移动实体(即节点)的连接构建的。这些网络实体之间的合作和协调对于建立安全的路由路径至关重要。wmn的这种分布式特性增加了路由协议的脆弱性。由于网络是自组织、自配置和依赖多跳路由的,因此在这种分布式环境中建模和计算信任是必不可少的。因此,为了保证路由的安全发现和维护,在发现邻居、选择路由器和发布拓扑信息的过程中,以协作的方式计算单个节点的可信度是非常重要的。为了检测网络中的可信节点,提出了一种基于多准则决策(MCDM)的模型,该模型将节点行为量化为离散量。该方案保证了对网络中恶意和行为不端的节点的检测,并通过代码仿真进行了验证。
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引用次数: 9
Development and implementation environment of fuzzy object oriented models with partial inheritance and aggregation relationships 具有部分继承和聚合关系的面向对象模糊模型的开发与实现环境
Pub Date : 2011-12-01 DOI: 10.1109/WICT.2011.6141333
Ismail Ataie, N. Ghasem-Aghaee, Tania Taami
In this research it has been tried to make a model based on object oriented concepts and the logic of fuzzy sets. And also provide a suitable tool (FOOL language based on Prolog) to the further development works and the implementation of fuzzy object oriented models. Beside this, main effort stressed on removing the shortcomings of previous models by evaluation information from out circumstance, expanding them and making a complementary method in the evolution of the previous methods. Specific feature of this model are using and presenting partial inheritance and partial aggregation relations together besides of fuzzy rules in inference process.
本研究尝试建立一个基于面向对象概念和模糊集逻辑的模型。同时也为进一步的开发工作和模糊面向对象模型的实现提供了合适的工具(基于Prolog的FOOL语言)。除此之外,主要的工作是通过对环境信息的评价来消除以往模型的不足,并对其进行扩展,在以往方法的演进中形成一种互补的方法。该模型的具体特点是在推理过程中除了模糊规则外,还将部分继承关系和部分聚集关系结合在一起。
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引用次数: 1
Detection of microcalcification clusters in digital mammograms using Multiresolution based foveal algorithm 基于多分辨率中央凹算法的数字乳房x线微钙化簇检测
Pub Date : 2011-12-01 DOI: 10.1109/WICT.2011.6141323
T. Balakumaran, I. Vennila
Mammography is the most used diagnostic technique for breast cancer. Microcalcification clusters are the early sign of breast cancer and their early detection is a key to increase the survival rate of women. The appearance of microcalcification clusters in mammogram as small localized granular points, which is difficult to identify by radiologists because of its tiny size. An efficient method to improve diagnostic accuracy in digitized mammograms is the use of Computer Aided Diagnosis (CAD) system. This paper presents Multiresolution based foveal algorithm for microcalcification detection in mammograms. The detection of microcalcifications is achieved by decomposing the mammogram by wavelet transform without sampling operator into different sub-bands, suppressing the coarsest approximation subband, and finally reconstructing the mammogram from the subbands containing only significant detail information. The significant details are obtained by foveal concepts. Experimental results show that the proposed method is better in detecting the microcalcification clusters than other wavelet decomposition methods.
乳房x光检查是最常用的乳腺癌诊断技术。微钙化簇是乳腺癌的早期征兆,早期发现是提高女性生存率的关键。微钙化团簇在乳房x光片上表现为小的局部颗粒点,由于其体积小,难以被放射科医生识别。计算机辅助诊断(CAD)系统是提高数字化乳房x线照片诊断准确性的有效方法。本文提出了一种基于多分辨率中央凹的乳房x线微钙化检测算法。微钙化的检测是通过不带采样算子的小波变换将乳房x光片分解成不同的子带,抑制最粗的近似子带,最后从仅包含重要细节信息的子带重建乳房x光片来实现的。重要的细节是通过中央凹概念获得的。实验结果表明,该方法在检测微钙化簇方面优于其他小波分解方法。
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引用次数: 5
Means of expression, rendering and analysis of collective reactions in social interaction environments 社会互动环境中集体反应的表达、渲染和分析手段
Pub Date : 2011-12-01 DOI: 10.1109/WICT.2011.6141211
N. Sgouros
In recent years the development of a multitude of environments for social interaction has provided unprecedented opportunities for mass participation in social activities on a global scale. Participation in social action can take many forms from well-structured dialogues such as those taking place in scientific conferences to spontaneous crowd reactions similar to those occurring in sports or mass entertainment venues. Our research focuses on the creation of methods for the expression, rendering and analysis of collective reactions in social activities. Collective in this context refers to a number of reactions with similar content, referring to the same situation and posted by a significant number of people at approximately the same point in time. We examine the types of such reactions and propose a number of rendering methods that take into account their magnitude, persistence and the aesthetics of the environment they appear in. We also describe analysis tools for tracking the emergence and evolution of such phenomena and discovering their causes. Finally, we propose methods by which the results of this analysis can be used in the creation of richer and more engaging social interaction experiences.
近年来,众多社会互动环境的发展为全球范围内的大众参与社会活动提供了前所未有的机会。参与社会行动可以采取多种形式,从结构良好的对话(如在科学会议上进行的对话)到类似于在体育或大众娱乐场所发生的自发人群反应。我们的研究重点是在社会活动中创造表达、呈现和分析集体反应的方法。在这种情况下,集体指的是具有相似内容的许多反应,指的是相同的情况,并由相当多的人在大约相同的时间点发布。我们研究了这种反应的类型,并提出了一些渲染方法,考虑到它们的大小、持久性和它们出现的环境的美学。我们还描述了用于跟踪这些现象的出现和演变并发现其原因的分析工具。最后,我们提出了一些方法,通过这些方法,分析的结果可以用于创造更丰富、更吸引人的社会互动体验。
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引用次数: 1
Robots for social training of autistic children 自闭症儿童社交训练机器人
Pub Date : 2011-12-01 DOI: 10.1109/WICT.2011.6141197
E. Barakova
We apply a participatory co-creation process to empower health researchers/practitioners with robot assistants or mediators in behavioral therapies for children with autism. This process combines (a) a user centered design of a platform to support therapists to create and share behavioral training scenarios with robots and (b) acquisition of domain specific knowledge from the therapists in order to design robot-child interaction scenarios that accomplish specific learning goals. These two aspects of the process are mutually dependant and therefore require an iterative design of a technological platform that will make gradual steps towards creating optimal affordances for therapists to create robot-mediated scenarios to the best of the technical capabilities of the robot, i.e. through co-creation. For this purpose an end-user programming environment augmented with learning by demonstration tool and textual commands is being developed. The initial tests showed that this tool can be used by the therapists to create own training scenarios with existing behavioral components. We conclude that this platform comply with the needs of the contemporary practices that focus on personalization of the training programs for every child. In addition, the proposed framework makes possible to include extensions to the platform for future developments.
我们采用参与式共同创造过程,授权健康研究人员/从业人员使用机器人助手或调解员进行自闭症儿童的行为治疗。这个过程结合了(a)以用户为中心的平台设计,以支持治疗师与机器人创建和共享行为训练场景;(b)从治疗师那里获取特定领域的知识,以便设计完成特定学习目标的机器人-儿童交互场景。这个过程的这两个方面是相互依赖的,因此需要一个技术平台的迭代设计,这个平台将逐步为治疗师创造最佳的能力,以创造机器人介导的场景,以机器人的最佳技术能力,即通过共同创造。为此目的,正在开发一个通过演示工具和文本命令增强学习的最终用户编程环境。最初的测试表明,治疗师可以使用该工具根据现有的行为成分创建自己的训练场景。我们的结论是,这个平台符合当代实践的需求,重点是为每个孩子提供个性化的培训计划。此外,建议的框架还可以包括对平台的扩展,以用于未来的开发。
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引用次数: 12
期刊
2011 World Congress on Information and Communication Technologies
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