{"title":"Modelling the context evolution in Cultural Heritage domain: A graph approach","authors":"A. Chianese, F. Piccialli","doi":"10.4108/ICST.ICCASA.2014.257252","DOIUrl":"https://doi.org/10.4108/ICST.ICCASA.2014.257252","url":null,"abstract":"Nowadays, smart and pervasive environments are characterized by a large number of devices and related services offered to users. Providing the most appropriate services according to users behaviour and preferences is still a challenge and strongly depends on the user's current context. How it is well known, the context is often rich of data and very dynamic, and the users aim to continuously receive information about contextualised services. In this scenario, Cultural Heritage represents a domain where exchanged and produced data can be opportunely exploited by a set of applications and services in order to make the environment smart. This paper proposes a novel approach to represent and manage the evolution of context instances driven by events adopting a graph structure. As a case study, we propose an example of context evolution in an art exhibition within the Maschio Angioino castle, in Naples (Italy).","PeriodicalId":426100,"journal":{"name":"International Conference on Context-Aware Systems and Applications","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124514271","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}
{"title":"AMBIT: Towards an Architecture for the Development of Context-dependent Applications and Systems","authors":"Giacomo Cabri, M. Leoncini, R. Martoglia","doi":"10.5555/2762722.2762734","DOIUrl":"https://doi.org/10.5555/2762722.2762734","url":null,"abstract":"The development of ubiquitous services tailored to the needs and expectations of a very large number of potential users (especially mobile users) requires that future applications and systems be aware of the service fruition contexts and possibly of accurate user profiles.The AMBIT research project aims at providing a general model of context as well as a platform that can be exploited to build and deploy different kinds of context-dependent applications and systems. We aim at overcoming the restrictions of the existing approaches, which are mainly due to the limited notion of context they propose (if any). In particular, we stress the fact that current technologies do not accurately consider the notion of context semantics and user profile, which is the main source of the flooding of useless data that overload systems and often users' minds.","PeriodicalId":426100,"journal":{"name":"International Conference on Context-Aware Systems and Applications","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114477302","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}
Yuichi Watanabe, Tetsuya Masuda, S. Matsumoto, S. Saiki, Masahide Nakamura
{"title":"Exploiting House Log of Home Network System to Derive Contexts with Past Situations","authors":"Yuichi Watanabe, Tetsuya Masuda, S. Matsumoto, S. Saiki, Masahide Nakamura","doi":"10.4108/ICST.ICCASA.2014.257208","DOIUrl":"https://doi.org/10.4108/ICST.ICCASA.2014.257208","url":null,"abstract":"In the conventional context-aware services of the home network system (HNS), every context has been defined by current (or recent) situations only. Considering past situations in a house would significantly extend the expressive power of the context-aware services. In this paper, we propose a new type of context, called log context, by using house log of the HNS, extensively. The log context is defined with both the current and past situations, where the current situation is obtained by sensors or device status of the HNS while the past situations are derived by queries to the house log. We also develop a system that can derive the log contexts within an actual HNS. To manage individual log contexts efficiently, the system is designed by four layers: application layer, log context layer, log query layer, and DB connector layer. Using the developed system, we evaluate practical log contexts: \"It is much colder than yesterday\", and \"Today is the coldest day for past several years\".","PeriodicalId":426100,"journal":{"name":"International Conference on Context-Aware Systems and Applications","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127367726","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}
Ana Emília F. Oliveira, R. M. França, Elza B. Ferreira, Francisco Gregorio Silva, João Gabriel Castro
{"title":"Responsive Online Book based on the Multimedia Learning Theory","authors":"Ana Emília F. Oliveira, R. M. França, Elza B. Ferreira, Francisco Gregorio Silva, João Gabriel Castro","doi":"10.4108/ICST.ICCASA.2014.258620","DOIUrl":"https://doi.org/10.4108/ICST.ICCASA.2014.258620","url":null,"abstract":"The growing popularity of mobile devices with internet access has created a unique opportunity for exploitation by Distance Learning. To develop educational content for mobile devices is necessary to pay close attention to the technical aspects involved in educational interfaces. In this paper a mobile educational object developed by UNASUS/UFMA is presented: the responsive online book. The conception of its interface is based on the Multimedia Learning Theory and development standards for Responsive Web Design.","PeriodicalId":426100,"journal":{"name":"International Conference on Context-Aware Systems and Applications","volume":"226 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124053610","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}
{"title":"A P2P Resource Sharing Algorithm (P2P-RSA) for 802.22b Networks","authors":"C. Passiatore, P. Camarda","doi":"10.4108/ICST.ICCASA.2014.257280","DOIUrl":"https://doi.org/10.4108/ICST.ICCASA.2014.257280","url":null,"abstract":"IEEE 802.22 is a standard for Wireless Regional Area Network (WRAN) which uses cognitive radio techniques to exploit in an opportunistic way the white spaces in the TV frequency spectrum. In the last years 802.22b working group was approved by the IEEE 802 committee, at the aim to allow peer to peer communications in a 802.22 WRAN. One of the principal issue in this topic is the intra network resource sharing. In this paper we present a resource sharing algorithm based on spectrum reuse, the features of the proposed method are fairness and network capacity maximization.","PeriodicalId":426100,"journal":{"name":"International Conference on Context-Aware Systems and Applications","volume":"2016 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121325899","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}
Agnes Grünerbl, G. Bahle, Jens Weppner, P. Lukowicz
{"title":"Ubiquitous Context Aware Monitoring Systems in Psychiatric and Mental Care: Challenges and Issues of Real Life Deployments","authors":"Agnes Grünerbl, G. Bahle, Jens Weppner, P. Lukowicz","doi":"10.4108/ICST.ICCASA.2014.256899","DOIUrl":"https://doi.org/10.4108/ICST.ICCASA.2014.256899","url":null,"abstract":"In this paper we introduce two real-world examples of successful deployments of ubiquitous monitoring technology in mental care: one related to monitoring elderly dementia patients at a nursing home and one to the diagnosis of manic and depressive episodes in bipolar disorder patients. We will elaborate the most relevant challenges that had to be dealt with and introduce the solutions that helped us to overcome them.","PeriodicalId":426100,"journal":{"name":"International Conference on Context-Aware Systems and Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129488086","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}
{"title":"Introducing Context-Awareness to MOOC Systems","authors":"Mubarak Mohammad, Alaa Alsaig, Ammar Alsaig","doi":"10.4108/ICST.ICCASA.2014.257285","DOIUrl":"https://doi.org/10.4108/ICST.ICCASA.2014.257285","url":null,"abstract":"Massive open online courses (MOOC) are shaping the future of education, moving studies outside class rooms, and changing the way people attain knowledge. It provide options to both universities and students. It enables students to have access to high quality courses offered by prestigious universities and top ranked professors for free or for affordable prices. At the same time, it enables universities to widen their scope and get access to worldwide prospect students. This brings in challenges to both universities and students. Universities need to address a full range of students, from different backgrounds, education levels, and specializations. Also, due to competition and variety of other MOOC service providers, universities need to establish effective techniques to persuade students to join and get engaged in its provided courses. On the other hand, students are faced with various options of universities and courses. This paper aims to tackle the challenges of 1) marketing courses for massive target audience, and 2) engaging students into the depth of the provided courses to attain effective, high quality education. We apply context-awareness techniques and principles to address these challenges. Context-Aware systems are becoming ubiquitous. These systems comprise mechanisms to acquire knowledge about the surrounding environment and adapt its behavior and service provision accordingly. Context defines the characteristics and settings of an object or event. It provides insight about the surrounding environment. In this paper, we provide a software architecture for MOOC systems which comprises context-awareness. The architecture includes two context models: one for marketing and the second for effective student engagement in the educational process. Adding context-awareness to MOOC systems helps regulate and restrict service provision to ensure effective wider reach (marketing) and better quality of education (student engagement)..","PeriodicalId":426100,"journal":{"name":"International Conference on Context-Aware Systems and Applications","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130434763","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}
{"title":"Context Aware Accidents Prediction and Prevention System for VANET","authors":"M. Aswad, S. Al-Sultan, H. Zedan","doi":"10.4108/ICST.ICCASA.2014.257334","DOIUrl":"https://doi.org/10.4108/ICST.ICCASA.2014.257334","url":null,"abstract":"Worldwide, traffic accidents cause over a million fatalities every year. Thus, improving road safety and saving people's lives is an international priority. One major challenge faced by researchers is to design an ideal system that is able to predict road accidents and implement efficient prevention actions. Context-aware systems are those systems that are able to sense, reason and react upon the current contextual information. Utilising those systems in intelligent transportation systems (ITS) might improve road safety and enhance traffic efficiency. This paper introduces a context-aware accidents prediction and prevention system taking into account the most contributory factors that cause road accidents including factors related to the driver, the environment, the vehicle and other vehicles on the road. A context-aware architecture based on VANET's On Board Unit (OBU) is presented. The architecture is divided into three phases: physical phase, thinking phase and application phase, which represent the three main subsystems of context-aware systems: the sensing, the reasoning and the acting subsystem respectively. In the thinking phase, a Dynamic Bayesian Networks (DBN) model has been proposed to predict the accident likelihood and the severity level. The evaluation of the proposed system showed good results in predicting accidents and their levels of severity.","PeriodicalId":426100,"journal":{"name":"International Conference on Context-Aware Systems and Applications","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125315388","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}
Marco Maier, Chadly Marouane, Manuel Klette, Florian Dorfmeister, Philipp Marcus, Claudia Linnhoff-Popien
{"title":"SURFtogether: Towards Context Proximity Detection Using Visual Features","authors":"Marco Maier, Chadly Marouane, Manuel Klette, Florian Dorfmeister, Philipp Marcus, Claudia Linnhoff-Popien","doi":"10.4108/ICST.ICCASA.2014.257255","DOIUrl":"https://doi.org/10.4108/ICST.ICCASA.2014.257255","url":null,"abstract":"With the now near ubiquity of smart mobile devices and the advent of new wearable computing devices like Google Glass, context-aware computing applications are becoming more and more feasible. We propose a new concept coined Context-Proximity Awareness aimed at identifying closely related entities based on contextual similarity. As a first step towards that goal, we introduce the SURFtogether approach, trying to detect contextual proximity by analyzing the field of vision of two or more entities. We evaluate the general feasibility of our approach based on real-world data and show that in our initial tests, correct detection of contextual proximity is achieved nearly 90p of the time.","PeriodicalId":426100,"journal":{"name":"International Conference on Context-Aware Systems and Applications","volume":"02 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127178909","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}
{"title":"Threshold-based context change detection for ubiquitous environments","authors":"Nesrine Khabou, I. Rodriguez, M. Jmaiel","doi":"10.4108/ICST.ICCASA.2014.258607","DOIUrl":"https://doi.org/10.4108/ICST.ICCASA.2014.258607","url":null,"abstract":"The increase of mobile and interconnected devices leads to the growth of demands for pervasive and mobile applications. Due to the heterogeneity of devices in terms of resources, capabilities, etc., these applications have to adapt themselves to the context changes and the execution environment. This requires the development of context aware applications that must perform four phases. Collecting and monitoring context, analyzing context, deciding adaptation actions and finally executing the planned adaptation actions to respond to the context changes. We focus on the second phase (analyzing context). It's aim is to analyze context to detect changes. In this paper, we propose a context analysis approach that relies on different thresholds defined according to the user needs to detect changes and raise notifications when changes occur. The analysis approach is divided into three steps. A context storage step, a context classification step, and a threshold calculation step.","PeriodicalId":426100,"journal":{"name":"International Conference on Context-Aware Systems and Applications","volume":"235 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121868001","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}