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2012 16th Panhellenic Conference on Informatics最新文献

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EasyTracker: An Android Application for Capturing Mobility Behavior EasyTracker:一个用于捕捉移动行为的Android应用程序
2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCi.2012.22
A. Doulamis, N. Pelekis, Y. Theodoridis
{"title":"EasyTracker: An Android Application for Capturing Mobility Behavior","authors":"A. Doulamis, N. Pelekis, Y. Theodoridis","doi":"10.1109/PCi.2012.22","DOIUrl":"https://doi.org/10.1109/PCi.2012.22","url":null,"abstract":"This paper presents Easy Tracker, a mobile application developed for the Android O/S that enable the storage, analysis and map visualization of routes of mobile users. Furthermore, it enable users to manually annotate part of their routes with labels describing their activity and behavior (e.g. \"home having breakfast\", \"travelling by car to work\", etc.). Of equal importance, the application encapsulates several state-of-the-art line simplification algorithms for compressing the trajectories drawn from collected GPS records, as well as segmenting trajectories into homogeneous parts in order to facilitate automatic auditing of the user's manual annotation.","PeriodicalId":131195,"journal":{"name":"2012 16th Panhellenic Conference on Informatics","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121185663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 26
Perceived Usability Evaluation of Learning Management Systems: A First Step towards Standardization of the System Usability Scale in Greek 学习管理系统的感知可用性评估:迈向希腊语系统可用性量表标准化的第一步
2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCi.2012.38
C. Katsanos, Nikolaos Tselios, M. Xenos
{"title":"Perceived Usability Evaluation of Learning Management Systems: A First Step towards Standardization of the System Usability Scale in Greek","authors":"C. Katsanos, Nikolaos Tselios, M. Xenos","doi":"10.1109/PCi.2012.38","DOIUrl":"https://doi.org/10.1109/PCi.2012.38","url":null,"abstract":"Perceived usability is an important requirement of educational software, affecting greatly student's learning effectiveness and overall learning experience. Although the System Usability Scale (SUS) questionnaire is considered as a de facto standard for perceived usability evaluation, surprisingly, few studies are reporting results from evaluations related to Learning Management Systems (LMSs). In addition, given that the questionnaire comprises 10 questions presented in English, its applicability in studies involving speakers of other languages is questionable. In this paper, a first step towards standardization of a Greek version of SUS in the context of LMSs perceived usability evaluation is reported. To this end, three studies involving 280 university students in both blended and distance learning education were conducted. Analysis of the results demonstrated the validity and reliability of the Greek version of SUS.","PeriodicalId":131195,"journal":{"name":"2012 16th Panhellenic Conference on Informatics","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123621224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 76
HERMES: A Tool for Querying Heterogeneous Data Stores HERMES:异构数据存储查询工具
2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCi.2012.32
E. Keramopoulos, D. Dervos, Ignatios S. Deligiannis, Georgios Evangelidis, P. Pouyioutas
{"title":"HERMES: A Tool for Querying Heterogeneous Data Stores","authors":"E. Keramopoulos, D. Dervos, Ignatios S. Deligiannis, Georgios Evangelidis, P. Pouyioutas","doi":"10.1109/PCi.2012.32","DOIUrl":"https://doi.org/10.1109/PCi.2012.32","url":null,"abstract":"Data are organized/stored in a plethora of different databases, locations and data models. In many cases, companies and organizations utilize data stored in a variety of data models at remote database servers. A challenge would be to construct queries that join data from such disparate sources. In this paper, we report on research work relating to graphical query languages and data modeling. More specifically, we report on a new software tool for the novice user, one that transforms databases of different data models (Relational, Object-Relational, Object-Oriented) into an equivalent XML model, plus on a new graphical XQuery type query language that facilitates the construction of user queries that join data from different data models.","PeriodicalId":131195,"journal":{"name":"2012 16th Panhellenic Conference on Informatics","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122482625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Eco-labeling Greek Schools for Energy Efficiency over IPv6 生态标签希腊学校的能源效率超过IPv6
2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCi.2012.43
Kostas Koumoutsos, Emmanouel Varvarigos, V. Nikolopoulos, A. Liakopoulos
{"title":"Eco-labeling Greek Schools for Energy Efficiency over IPv6","authors":"Kostas Koumoutsos, Emmanouel Varvarigos, V. Nikolopoulos, A. Liakopoulos","doi":"10.1109/PCi.2012.43","DOIUrl":"https://doi.org/10.1109/PCi.2012.43","url":null,"abstract":"Reducing CO2 emissions in order to address climate change is a difficult challenge but it may also become an opportunity for improving citizens' behaviour towards the protection of the physical environment. Furthermore, as buildings are responsible for a significant portion of total energy consumption and emissions, improving their energy performance is clearly a key factor for accomplishing the EC climate and energy objectives. In this context, the Greek pilot in GEN6, a European Commission funded project, aims to influence the behaviour of the local school communities by raising their energy awareness. As discussed herein, the pilot will provide real-time energy efficiency services over IPv6-enabled grids to the local educational community, providing students with information on their consumption patterns and raising awareness among them on the energy savings that behavioural changes may bring. Consequently, the pilot aims to reduce the participating school buildings' carbon footprint by at least 10% and prove that IPv6 may become an enabling technology for new advanced services. Currently, the installation of IPv6-enabled energy smart meters is in progress at 50+ schools for monitoring energy consumption but also for becoming an educational and social engagement tool for students. The GEN6 pilot, also aligned with the Greek School Network energy innovative programme, is further reinforced by hands-on workshops aiming at engaging students on issues of sustainability and empowering them to make further behavioural energy-saving changes. Results from the competition among the participating school communities are disseminated to the public through various means, such as a web portal, a blog, and social networks, which record the energy efficiency of participating schools and the effect of the actions taken.","PeriodicalId":131195,"journal":{"name":"2012 16th Panhellenic Conference on Informatics","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129158798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
PLATO - Intelligent Middleware Platform for the Collection, Analysis, Processing of Data from Multiple Heterogeneous Sensor Systems and Application Development for Business Intelligence 用于收集、分析、处理来自多个异构传感器系统的数据和商业智能应用开发的智能中间件平台
2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCi.2012.65
L. Perlepes, C. Smailis, Dimitris Dres, D. Drakoulis, J. Soldatos
{"title":"PLATO - Intelligent Middleware Platform for the Collection, Analysis, Processing of Data from Multiple Heterogeneous Sensor Systems and Application Development for Business Intelligence","authors":"L. Perlepes, C. Smailis, Dimitris Dres, D. Drakoulis, J. Soldatos","doi":"10.1109/PCi.2012.65","DOIUrl":"https://doi.org/10.1109/PCi.2012.65","url":null,"abstract":"The \"Internet of Things\" along with the \"Internet ofServices\" is expected to undertake a significant role in our lives for the years to come. The versatility of its components and the ability to harvest, as well as consume, ubiquitous services in addition to information from different providers, are among the main challenges for the expansion. Main information producers will consist of networks of small smart objects. These interconnected smart nodes are equipped with different micro controllers, use different network protocols and have different operational requirements. In this paper we propose a framework that confronts all types of heterogeneities in order to manage smart nodes and their data in business intelligence applications.","PeriodicalId":131195,"journal":{"name":"2012 16th Panhellenic Conference on Informatics","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125706968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Design and Implementation of an E-exam System Based on the Android Platform 基于Android平台的电子考试系统的设计与实现
2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCi.2012.76
G. Meletiou, I. Voyiatzis, V. Stavroulaki, C. Sgouropoulou
{"title":"Design and Implementation of an E-exam System Based on the Android Platform","authors":"G. Meletiou, I. Voyiatzis, V. Stavroulaki, C. Sgouropoulou","doi":"10.1109/PCi.2012.76","DOIUrl":"https://doi.org/10.1109/PCi.2012.76","url":null,"abstract":"Due to the widespread adoption and use of handheld mobile devices, the application of mobile technologies in enhancing learning activities has attracted noteworthy research interest. This paper presents an attempt to exploit mobile technologies to simplify the exam management and performance assessment activities of a learning process. The work focuses on key aspects of mobile device and platform oriented design, light-weight and efficient implementation, interface usability issues related to fast and convenient question navigation, and performance assessment. A prototype system, implemented on Google Android OS, is also illustrated.","PeriodicalId":131195,"journal":{"name":"2012 16th Panhellenic Conference on Informatics","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131933430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 15
A New Approach to Gradual Video Transition Detection 一种新的渐进式视频过渡检测方法
2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCi.2012.85
K. I. Koumousis, V. Fotopoulos, A. Skodras
{"title":"A New Approach to Gradual Video Transition Detection","authors":"K. I. Koumousis, V. Fotopoulos, A. Skodras","doi":"10.1109/PCi.2012.85","DOIUrl":"https://doi.org/10.1109/PCi.2012.85","url":null,"abstract":"In this paper the problem of shot boundary detection for gradual transitions within video sequences is treated using statistical tests in conjunction with the Iterative Self Organizing Data Analysis (ISODATA) classification algorithm for consecutive video frames. The confusion matrix from the classification results is formed in order to calculate the kappa coefficient and from this to identify the transition. Experimental and comparative results with recently proposed methods are promising.","PeriodicalId":131195,"journal":{"name":"2012 16th Panhellenic Conference on Informatics","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124699284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Artemis: Protection from Sexual Exploitation Attacks via SMS 阿尔忒弥斯:通过短信保护免受性剥削攻击
2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCi.2012.46
Dimitri A. Michalopoulos, Eustathios Papadopoulos, I. Mavridis
{"title":"Artemis: Protection from Sexual Exploitation Attacks via SMS","authors":"Dimitri A. Michalopoulos, Eustathios Papadopoulos, I. Mavridis","doi":"10.1109/PCi.2012.46","DOIUrl":"https://doi.org/10.1109/PCi.2012.46","url":null,"abstract":"The increasing adoption of mobile communication through SMS (Short Message Service) messages by young people, has attracted pedophiles to perform sexual exploitation attacks. Artemis is an Android application that aims to protect minors by recognizing such attacks using advanced classification techniques. In case of high exploitation risk, a warning signal is sent to the designated parent who is responsible for further actions. The implementation results reveal sufficient and transparent operation of the application along with a significant reduction of the amount of transmitted traffic for application specific messages.","PeriodicalId":131195,"journal":{"name":"2012 16th Panhellenic Conference on Informatics","volume":"297 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121150394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Disaster Recovery Analysis and Management Method (DRAMM): An IT Management Tool 灾难恢复分析和管理方法(DRAMM):一种IT管理工具
2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCi.2012.56
George Aggelinos, S. Katsikas
{"title":"Disaster Recovery Analysis and Management Method (DRAMM): An IT Management Tool","authors":"George Aggelinos, S. Katsikas","doi":"10.1109/PCi.2012.56","DOIUrl":"https://doi.org/10.1109/PCi.2012.56","url":null,"abstract":"After the disaster striking the information system, the organization has to react rapidly in order to continue to function. In the absence of an alternative site, a scaled-down version of the information system, possibly with scaled-down performance, has to be deployed in order to provide the organization's Critical Business Functions and the related necessary Services. This has to be deployed within a few hours and to reflect the last snapshot of the main information system. This paper proposes a software tool that can define a scaled-down information system with the associated workstation structure, with which the organization can achieve a scaled-down performance. With the DRAMM tool, the IT staff can significantly reduce the time needed to deploy the scaled-down version of the information system, taking into account all changes in the main information system before the disaster.","PeriodicalId":131195,"journal":{"name":"2012 16th Panhellenic Conference on Informatics","volume":"515 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116217319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Fuzzy Lattice Reasoning (FLR) Extensions to Lattice-Valued Logic 模糊格推理(FLR)在格值逻辑中的扩展
2012 16th Panhellenic Conference on Informatics Pub Date : 2012-10-05 DOI: 10.1109/PCi.2012.40
V. Kaburlasos
{"title":"Fuzzy Lattice Reasoning (FLR) Extensions to Lattice-Valued Logic","authors":"V. Kaburlasos","doi":"10.1109/PCi.2012.40","DOIUrl":"https://doi.org/10.1109/PCi.2012.40","url":null,"abstract":"This work introduces the Boolean (quotient) lattice (Q<sub>I</sub>, ⊆), an element of whom is the union of countable (closed) intervals on the real line. It follows that (Q<sub>I</sub>, ∪, ∩, ') is a lattice implication algebra (LIA), the latter is an established framework for reasoning under uncertainty. It is illustrated in (Q<sub>I</sub>, ∪, ∩, ') how fuzzy lattice reasoning (FLR) techniques, for tunable decision-making, can be extended to lattice-valued logic. Potential practical applications are described.","PeriodicalId":131195,"journal":{"name":"2012 16th Panhellenic Conference on Informatics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130574201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
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