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Securing collaborative Web applications 保护协作Web应用程序
Pub Date : 2012-07-01 DOI: 10.1109/ICEELI.2012.6360653
M. Ameur, T. Abdellatif
With the expansion of Web servers and cloud infrastructures, collaborative Web applications are increasingly used. For instance, the e-learning is a field where students, tutors and professors share remote electronic resources and processing. Nevertheless, interference between information may occur that is data can illicitly flow to not authorized users either explicitly or implicitly. Therefore, one challenge in collaborative applications is to ensure an end-to-end security preserving user's privacy and verifying information integrity. We propose a practical solution to secure standard Web servers and isolate user's information. A use case of a classical meeting application, typically used in e-learning environment, shows the efficiency of our approach.
随着Web服务器和云基础设施的扩展,越来越多地使用协作Web应用程序。例如,电子学习是学生、导师和教授共享远程电子资源和处理的领域。然而,信息之间可能会发生干扰,数据可能会以明示或暗示的方式非法流向未经授权的用户。因此,协作应用程序中的一个挑战是确保端到端安全性,保护用户隐私并验证信息完整性。我们提出了一种实用的解决方案来保护标准Web服务器并隔离用户信息。典型会议应用程序(通常用于电子学习环境)的用例显示了我们的方法的效率。
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引用次数: 0
A blended-learning concept for basic lectures in electrical engineering: A practical report 电气工程基础课程的混合学习概念:实用报告
Pub Date : 2012-07-01 DOI: 10.1109/ICEELI.2012.6360578
T. Winterstein, F. Greiner, H. Schlaak, L. Pullich
In this paper we present the blended-learning concept of a basic course attended by about 1000 students of various courses of study each semester. The traditionally organized course with lecture and exercise is afflicted by different time tables and knowledge background of the students, as well as being a subject with high degree of abstraction. Adding lecture and exercise recordings, interactive animations, videos, tests and a quiz as mandatory and voluntary teaching material allows an autonomous learning process at individual speed. Evaluation results and access statics show a very good acceptance of the new elements, especially lecture recordings and weekly online-tests.
在本文中,我们提出了一门基础课程的混合学习概念,每学期约有1000名学生参加各种课程的学习。传统的以讲课和练习为主的课程,由于时间安排和学生知识背景的不同,是一门抽象程度较高的学科。添加讲座和练习录音,互动动画,视频,测试和测验作为强制性和自愿的教学材料,允许以个人速度自主学习过程。评估结果和访问统计数据显示,人们对新元素的接受程度很高,尤其是课堂录音和每周在线测试。
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引用次数: 6
An adaptive educationnal hypermedia system integrating learning styles: Model and experiment 融合学习风格的自适应教育超媒体系统:模型与实验
Pub Date : 2012-07-01 DOI: 10.1109/ICEELI.2012.6360641
D. Samia, A. Abdelkrim
In the past decade, a number of adaptive hypermedia learning systems have been developed. However, most of these systems tailor presentation content and navigational support solely according to students' prior knowledge. On the other hand, previous research suggested that learning styles significantly affect student learning because they refer to how learners process and organize information. To this end, this paper presents an approach to integrate learning styles into adaptive e-learning hypermedia. The main objectives were to develop a Learning Style based Adaptive E-learning Hypermedia System (LS-AEHS) and assess the effect of adapting educational materials individualized to the student's learning style. In this work, our main goal aims to adopting the theory of experiential learning in the context of the DAVID KOLB's model to pass of this learning style model to define the adaptation rules in order to adapt the learning content and the navigation to each learning style in KOLB model. To achieve the main objectives, a case study was developed. An experimental evaluation was designed to evaluate the new approach of matching learning materials with learning styles and their influence on student's learning achievement. The findings support the use of learning styles as guideline for adaptation into the adaptive e-learning hypermedia systems.
在过去的十年中,许多自适应超媒体学习系统已经被开发出来。然而,这些系统中的大多数都是根据学生的先验知识来定制演示内容和导航支持。另一方面,先前的研究表明,学习风格显著影响学生的学习,因为他们是指学习者如何处理和组织信息。为此,本文提出了一种将学习风格融入自适应电子学习超媒体的方法。主要目标是开发一个基于学习风格的自适应电子学习超媒体系统(LS-AEHS),并评估个性化教材适应学生学习风格的效果。在这项工作中,我们的主要目标是采用DAVID KOLB模型背景下的体验学习理论,通过这种学习风格模型来定义适应规则,从而使学习内容和导航适应KOLB模型中的每种学习风格。为了实现主要目标,进行了案例研究。本文设计了一项实验评估,以评估学习材料与学习风格匹配的新方法及其对学生学习成绩的影响。研究结果支持使用学习风格作为适应自适应电子学习超媒体系统的指导方针。
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引用次数: 16
Un algorithme semi-automatique pour la fusion d'ontologies basé sur la combinaison de stratégies 一种基于策略组合的半自动本体融合算法
Pub Date : 2012-07-01 DOI: 10.1109/ICEELI.2012.6360643
Siham Amrouch, S. Mostefai
Les ontologies deviennent, de plus en plus, des modèles de représentations et de stockage d'informations très efficaces facilitant le traitement et la gestion de connaissances à travers les techniques de l'IA, et offrant le potentiel d'assemblage d'une grande quantité d'informations à travers ce qu'on appelle « la fusion d'ontologies ». Préalablement chaque source de données ou BDD peut faire l'objet d'une construction ontologique. La contribution adressée dans ce papier et de concevoir un algorithme lexico-sémantique pour la fusion semi-automatique d'ontologies. Le caractère semi-automatique est assuré par l'intervention humaine où l'Ingénieur de Connaissances intervient pour valider les résultats obtenus par le module de calcul de similarités. Ce dernier est basé sur un algorithme lexico-sémantique qui combine des mesures de similarité lexicale et sémantique pour identifier les concepts similaires entre deux ontologies différentes. Les concepts jugés similaires à base de la combinaison des mesures de similarités lexicales et sémantiques, et après la validation par l'Ingénieur de Conaissances seront par la suite fusionnés en un seul concept dans l'ontologie résultat de la fusion. Nous avons opté pour cette combinaison pour renforcer la faiblesse des mesures lexicales notamment pour les synonymes et les homonymes. Les deux parties, lexicale et sémantique, du module de calcul de similarités sont basées sur la technique de la recherche d'informations (Information Retreival). La partie lexicale est basée sur le calcul de la distance entre les deux concepts en entrée, alors que la partie sémantique est basée sur le modèle d'extension des deux ontologies à partir de wordNet. Ensuite la similarité sémantique entre les deux synsets des deux concepts en question est calculée. Après la combinaison des deux résultats, l'Ingénieur de Connaissances accepte ou rejette la similarité en utilisant son background sur le domaine d'application et en se basant sur ses propres besoins. Les concepts acceptés comme similaires sont fusionnés en un seul concept. En fin, une comparaison de l'algorithme avec les outils qui existent dans la littérature aura lieu.
本体模型变得越来越多、演出和便利待遇非常有效率的信息存储和管理知识,通过人工智能技术,并提供装配潜力很大的信息量,通过所谓的«d’ontologies聚变»。在此之前,每个数据源或BDD都可以进行本体构造。本文的贡献是设计一种用于本体半自动融合的词汇语义算法。半自动是由人工干预保证的,知识工程师介入验证相似性计算模块获得的结果。后者基于词汇-语义算法,结合词汇和语义相似性度量来识别两个不同本体之间的相似概念。根据词汇和语义相似性度量的组合被认为相似的概念,并经过知识工程师的验证后,随后将合并成一个单一的概念,合并产生的本体。我们选择这种组合是为了加强词汇措施的弱点,特别是同义词和同音异义词。相似性计算模块的词汇和语义部分都是基于信息检索技术。词汇部分基于两个输入概念之间的距离计算,语义部分基于wordNet中两个本体的扩展模型。然后计算所讨论的两个概念的两个synset之间的语义相似性。结合这两种结果后,知识工程师根据自己的需求,利用自己在应用领域的背景,接受或拒绝相似性。被接受为相似的概念被合并成一个概念。最后,将该算法与文献中现有的工具进行比较。
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引用次数: 3
Cloud libraries: A novel application of cloud computing 云库:云计算的一种新应用
Pub Date : 2012-07-01 DOI: 10.11591/CLOSER.V1I3.586
F. Abidi, H. J. Abidi, S. Armani
Libraries all over the world suffer from common problems like flexibility associated with the digital data, lower levels of efficiency, and huge cost involved in managing the entire IT infrastructure themselves. Few options are available when it comes to collaborating with other libraries as well which is the prime reason for subordinate levels of efficiency. Cloud computing would help us in bridging the gap between digital libraries and IT. Sharing of data among the libraries will in principle reduce the overall cost and increase the efficiency. Capital expenditure done on infrastructure will chiefly be converted into operational expenditure. It will also enhance the users' experience and will help in making the libraries a lot more scalable.
世界各地的图书馆都面临着一些共同的问题,比如与数字数据相关的灵活性、效率低下以及管理整个IT基础设施本身所涉及的巨大成本。当涉及到与其他图书馆合作时,可用的选择也很少,这是效率低下的主要原因。云计算将帮助我们弥合数字图书馆和IT之间的鸿沟。图书馆之间的数据共享原则上会降低总体成本并提高效率。用于基础设施的资本性支出将主要转化为业务支出。它还将增强用户体验,并有助于使库更具可扩展性。
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引用次数: 23
Une modélisation de l'apprenant basée web sémantique et web services 基于语义web和web服务的学习者建模
Pub Date : 2012-07-01 DOI: 10.1109/ICEELI.2012.6360623
K. Nesrine, T. Bouhadada
With the sprawl of information on the web, came the need for mechanisms increasingly able to organize and maintain information to provide structured responses and more accurate response to user requests. Based on ontologies, the development of the semantic web offers new opportunities and challenges in the design of a generation of adaptative systems, where user modeling is a key element for personalized interaction. This is the result that the idea of semantic referencing of the learner to provide the learning system of relevant information to customize and tailor learning. It is within this context that the scope of our work to integrate a new vision of modeling and model management learning in distributed environments and open, on three different aspects of this model; first the cognitive and knowledge representation of the learner by offering a semantic learning of the actor, and the notion of skills after the appearance interoperability that will be processed by the web services and semantic web languages and end the scalability aspect of this model.
随着web上信息的扩展,越来越需要能够组织和维护信息的机制,以便为用户请求提供结构化响应和更准确的响应。基于本体,语义网的发展为一代自适应系统的设计提供了新的机遇和挑战,其中用户建模是个性化交互的关键元素。这是语义参考思想为学习者提供学习系统的相关信息来定制和定制学习的结果。正是在这种背景下,我们的工作范围集成了分布式环境中建模和模型管理学习的新愿景,并在该模型的三个不同方面开放;首先,通过提供行动者的语义学习来实现学习者的认知和知识表示,以及出现后由web服务和语义web语言处理的技能概念,并结束该模型的可扩展性方面。
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引用次数: 0
Anomaly detection in geographic routing protocols 地理路由协议中的异常检测
Pub Date : 2012-07-01 DOI: 10.1109/ICEELI.2012.6360604
Mehdi Sookhak, Mahbubeh Haghparast, Abdullah Gani
Providing security for sensor nodes is one of the important issues in WSNs because they are deployed in the harsh environment. WSNs are distributed in nature and preparing centralized security solutions cannot be a suitable for WSNs. There are various sensor holes that may be formed in WSNs and create variations in network topologies and also threaten the upper layer applications such as sinkhole, black holes, wormholes and Sybil attack. Wormhole attack occur when two or more malicious nodes receive packets at one point of the network and transmit them to another malicious node by a wired or wireless tunnel; wormhole is carried out easily without requiring compromising sensor nodes in the network. Also, the wormhole attack may cause other type of attacks like DoS or Sybil attack. Using a cryptographic technique is not enough to prevent wormhole attack. In this study, a new scheme is proposed based on modifying the forwarding packet process, selecting the best neighbour and using hop count technique in order to prevent and detect wormhole and thus, reduce the number of untrusted packets in geographic routing protocols. Performance evaluation of the proposed scheme is done using mathematical modelling and simulation. The results are compared with some related works such as Authentication of Nodes Scheme (ANS) and Reverse Routing Scheme (RRS).
由于传感器网络部署在恶劣环境中,为传感器节点提供安全保障是传感器网络的重要问题之一。无线传感器网络本质上是分布式的,集中式的安全解决方案不适合无线传感器网络。在无线传感器网络中可能会形成各种传感器孔,并造成网络拓扑结构的变化,同时也会威胁到上层应用,如天坑、黑洞、虫洞和Sybil攻击。虫洞攻击发生在两个或多个恶意节点在网络的一点接收数据包,并通过有线或无线隧道将其传输到另一个恶意节点;虫洞很容易实现,而不需要损害网络中的传感器节点。此外,虫洞攻击可能导致其他类型的攻击,如DoS或Sybil攻击。使用加密技术不足以防止虫洞攻击。本文提出了一种基于修改报文转发过程、选择最佳邻居和使用跳数技术的新方案,以防止和检测虫洞,从而减少地理路由协议中不可信报文的数量。利用数学建模和仿真对所提方案进行了性能评估。结果与节点认证方案(ANS)和反向路由方案(RRS)等相关研究成果进行了比较。
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引用次数: 4
Design of an evaluation system in e-learning Arabic language 阿拉伯语在线学习评价系统的设计
Pub Date : 2012-07-01 DOI: 10.1109/ICEELI.2012.6360670
D. S. Boumiza, Wiem Ben Khalifa
The new form of education called "E-Learning" has grown significantly, especially in training institutions (Universities, Schools, Businesses, etc.). Consequently, they develop their software needs assessment in order to assess the information, and allow the learner to correct his knowledge autonomously. The teaching of languages takes place in the context of distance education and involves several research areas, as automatic processing of natural language and modeling of learning action in distance education environment. Therefore, the development of a remote Evaluation system for Arabic requires the preparation of various linguistic tools such as analyzers In this paper we focus on the development of a Morphological Analyzer In Arabic Language which can be operated in a remote evaluation system of the Arab that support during the seventh year basic level grammar taught in Tunisia. This work proposes to establish morphological analysis by promoting treatments that can be used by a system as the decomposition of a text, determining the properties of a word, the search in a text..., these treatments support learning through an explanation of ambiguous words, the integration strategies of Arabic grammar and solving exercises.
被称为“电子学习”的新教育形式已经显著增长,特别是在培训机构(大学、学校、企业等)。因此,他们开发了自己的软件需求评估,以评估信息,并允许学习者自主地纠正他的知识。远程教育环境下的语言教学涉及自然语言的自动处理和远程教育环境下学习行为的建模等多个研究领域。因此,阿拉伯语远程评估系统的开发需要准备各种语言工具,如分析仪。在本文中,我们重点关注阿拉伯语形态分析仪的开发,该分析仪可以在阿拉伯语远程评估系统中运行,该系统支持突尼斯七年级基础语法教学。这项工作提出通过促进处理来建立形态学分析,这些处理可以被系统用于文本的分解,确定单词的属性,在文本中搜索……这些治疗通过解释歧义词、阿拉伯语语法的整合策略和解决练习来支持学习。
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引用次数: 8
The design, implementation and evaluation of a web-based student teachers' ePortfolio (STeP) 基于网络的学生教师电子档案(STeP)的设计、实现与评价
Pub Date : 2012-07-01 DOI: 10.1109/ICEELI.2012.6360612
Anthony Farrugia, D. Al-Jumeily
This paper presents the development process of a web-based student teachers' ePortfolio system for the Faculty of Education at the University of Malta. Literature shows that at a higher educational level, a student ePortfolio is becoming an important tool as it is being used to enhance the learning process through constant tutor and peer feedback, self-regulation and reflection. Many ePortfolio applications exist that may help university faculties to collaborate with their students. However, these existing applications concentrate on general ePortfolio content and allow limited flexibility to be tailored to specific structured ePortfolios that is actually needed by the demanding faculty. In our opinion a new tailor-made structured ePortfolio is needed specifically to replace the manual professional development portfolio system. The proposed system will be the official ePortfolio for the Faculty of Education to be used compulsory by students that are reading a bachelors degree in Education with a secondary track at the University of Malta. Therefore we proposed the full lifecycle development of a new web-based student teachers' ePortfolio which we call STeP. A sample of fifteen selected participants, which include the chairperson of the Professional Development Portfolio, an administrator, tutors and students have taken part in different stages of the software development and played an important role in its success. We show all the stages involved that led to the successful implementation of the proposed tailor-made ePortfolio system. We evaluate our system and present a qualitative outcome for its implementation.
本文介绍了马耳他大学教育学院基于网络的学生教师电子档案系统的开发过程。文献显示,在更高的教育水平,学生电子档案正在成为一个重要的工具,因为它被用来通过不断的导师和同伴反馈,自我调节和反思来提高学习过程。许多电子投资组合应用程序可以帮助大学院系与学生合作。然而,这些现有的应用程序集中在一般的电子作品集内容上,并且允许有限的灵活性来定制特定的结构化电子作品集,而这些结构化电子作品集实际上是要求苛刻的教师所需要的。在我们看来,需要一个新的定制的结构化电子投资组合来取代手动的专业发展投资组合系统。该系统将成为马耳他大学教育学院的官方电子作品集,供在马耳他大学攻读二级教育学士学位的学生必修。因此,我们提出了一个新的基于网络的学生教师电子档案的全生命周期开发,我们称之为STeP。我们选取了15名参与者,其中包括专业发展组合的主席、一名管理员、导师和学生,他们参与了软件开发的不同阶段,并在软件的成功中发挥了重要作用。我们展示了成功实现量身定制的ePortfolio系统所涉及的所有阶段。我们评估我们的系统,并提出其实施的定性结果。
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引用次数: 5
Investigating the factors that affect peoples' acceptance of E-Learning Systems and Websites 调查影响人们接受电子学习系统和网站的因素
Pub Date : 2012-07-01 DOI: 10.1109/ICEELI.2012.6360573
D. Al-Jumeily, A. Hussain, H. Tawfik
The main focus of this paper is to investigate the use of Technology Acceptance Model to understand the factors that affect people's acceptance of E-Learning Systems and Websites, including cultural factors. E-Learning Technologies are in general considered to be useful and important to the learning process. Despite this perceived usefulness, some people are still not adopting the use of E-Learning and considering it to be still not one of the best options for Learning.
本文的主要重点是研究使用技术接受模型来了解影响人们接受电子学习系统和网站的因素,包括文化因素。电子学习技术通常被认为对学习过程是有用和重要的。尽管有这种感知到的有用性,一些人仍然不采用电子学习,认为它仍然不是学习的最佳选择之一。
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引用次数: 0
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International Conference on Education and e-Learning Innovations
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