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Journal of Mobile Multimedia

Editor-in-Chief: Pavlos Lazaridis, University of Huddersfield, UK


ISSN: 1550-4646 (Print Version),

ISSN: 1550-4654 (Online Version)
Vol: 10   Issue: Combined Issue 3 & 4

Published In:   November 2014

Publication Frequency: Quarterly


Search Available Volume and Issue for Journal of Mobile Multimedia


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Research on Tablets Application for Mobile Learning Activities


Eugenijus Kurilovas

Vilnius University Institute of Mathematics and Informatics
Vilnius Gediminas Technical University

Abstract: [+]    |    Download File [ 176KB ]

Abstract: The paper aims to present current research on application of tablet devices for mobile learning activities in Europe. The quality of modern learner centred mobile learning activities based on learning personalisation, problem solving, collaboration, content creation, and flipped classroom methods is compared against the quality of traditional teacher centred learning activities based on knowledge transmission usually applied at schools at the moment. Tablet devices and web applications are the main technologies used in presented mobile learning activities. Flagship EU-funded projects in the area – iTEC and CCL – are presented in the paper. Systematic review results on tablets use in education and personalisation of learning are also provided in the paper. Method of expert evaluation of learning activities based on multiple criteria decision analysis and Fuzzy methods as well as its application in CCL project are presented in more detail. A special attention is paid to suitability of mobile learning activities to particular learning styles. An example of interconnection between students learning styles, suitable learning activities, tablet apps and learning objects types is provided in the paper. Solution of learning activities quality evaluation and optimisation problem could help teachers to select suitable learning activities for particular learning styles. Research results have shown that the proposed Fuzzy method is quite objective, exact and simple to use for selecting qualitative learning activities for particular learning styles.

Keywords: Mobile learning activities, tablets, quality criteria, expert evaluation

Social Networks and the Construction of Identity in Digital Environments


Mónica Aresta, Luis Pedro, Carlos Santos and António Moreira

University of Aveiro, Portugal

Abstract: [+]    |    Download File [ 132KB ]

Abstract: The recognition of the creative, participatory and social dimensions of the Web brought profound changes to the way individuals approach education, identity, practice and knowledge. In a scenario characterized by connectivity and ease of access to people and content, the network provides a space where people can interact, learn, share experiences and build a reputation and identity available and accessible to the entire community. When it is almost impossible to stay out of the digital world and, therefore, of the production of an online identity, this paper addresses issues related with digital literacy, social networks and online identity. Presenting the main results of a case study developed at the University of Aveiro – Portugal, this paper describes how a group of students from a Master Degree Course adopted social networks to build a presence over the web and how they created, manifested and managed their online identity. When the characteristics of the digital world change the ways of building identity, and in a scenario where the contextualization of data and information is becoming increasingly important, this paper reflects upon the importance and relevance of building an identity in open social online environments.

Keywords: Online identity, social networks, digital literacies, analysis model

Learning from Gaming: Teachers’ and Students’ Perceptions


Margarida Lucas

University of Aveiro, Portugal

Abstract: [+]    |    Download File [ 311KB ]

Abstract: Research into the use of games in education is relatively new, but growing rapidly. Several authors suggest that these will gain widespread use in two to three years, but practical implementation is still rare and integration into the curriculum still seems unlikely. Games in education are described as inherently valuable, leading to a development of a range of skills and competences, such as collaboration, critical thinking, problem-solving, and communication that may transfer to other social and work-related spheres. This article presents an experiment that used online video games to foster interaction among students and teachers from different educational levels and different national schools. Results suggest that both students and teachers perceived gaming as a means to harness curriculum interdisciplinarity, develop skills and acquire new knowledge.

Keywords: video games, gaming, learning, postgraduation

Social Media Utilization in B2B Networks' Organizational Learning -- Review and Research Agenda Proposal


Elina Pettersson1, Heli Aramo-Immonen1 and Jari J. Jussila2

1Tmpere University of Technology, Pori Unit
2Tampere University of Technology

Abstract: [+]    |    Download File [ 104KB ]

Abstract: Knowledge management (KM) in a business-to-business (B2B) network is a different task than intraorganizational KM. Therefore this conceptual paper searches for an answer to the question of what we should re-search in this more demanding KM environment. We suggest that the social media provides a variety of vehicles for performing organizational learning via KM in B2B networks. Since this is relatively novel research area, we have done a literature review and propose a research agenda in this article.

Keywords: B2B, knowledge management, paradoxes, social media, organizational learning

Mobile Devices for Teaching English as a Second Language in Higher Education, the Case of DUOC in Chile


Eileen Sepúlveda Valenzuela, Maria G. Badilla Quaintana and Marcelo Careaga Butter

Universidad Católica de la Santísima Concepción, Concepción

Abstract: [+]    |    Download File [ 193KB ]

Abstract: Mobile devices are efficient tools of language learning since they enable students to learn and practice anywhere and anytime with personalized content and progress. The article analyzes the incorporation of the use of mobile devices for teaching English as a second language in higher education. This research was developed on a positivist paradigm, with a descriptive and quantitative methodology. The sample was formed by 32 students of Basic English courses belong to DUOC UC Institute, in Chile who practice their writing skills through systematic activities developed during 2013 in the Virtual Platform Blackboard. The results of this study suggest that students reacted positively to the use of technology, but expressed concern about the technological difficulties. Main findings confirm that the use of technology enables student’s practice of English, transforming and improving the learning environment inside of the classroom and students feel comfortable and secure because they have a teacher and technology’s support.

Keywords: M-learning, English as a second language, writing skills, virtual Platforms, Mobile devices

Query Types and Energy Consumption in Mobile Applications: an Experimental Study


Na Wang, Puyuan Yang, Peiquan Jin and Lihua Yue

University of Science and Technology of China, China

Abstract: [+]    |    Download File [ 847KB ]

Abstract: Mobile devices and applications have been very popular in people’s daily life. However, the energy issue in mobile platform, or in other words, the quick use-out of battery, has been rather a bottle-neck for the further development of mobile applications, as modern mobile applications usually cost a lot of power in mobile devices. Thus, it has been an urgent need to develop energy-friendly techniques for mobile applications. The most important thing is to identify the major factors that cause the rapid decreasing of power in mobile applications. In this paper, we make a preliminary study on this issue, and conduct experiments on mobile platform to analyse the connection between query types and energy consumption. On this basis, we can identify the most energy-consuming queries in mobile applications. In detail, we choose the TPC_H benchmark as the basic workload and select different types of queries to see the relationship between query type and energy consumption in mobile applications. The results show that the energy consumption in mobile applications is sensitive to high-cost queries. This indicates that there should be query-dependant methods to improve the energy efficiency in mobile applications.

Keywords: Mobile application, energy consumption, query type, measurement

Using Game Theory in Computer Engineering Education through Case Study Methodology: Kodak vs Polaroid in the Market for Instant Cameras


Andres Faina, Jesus Lopez-Rodriguez and Laura Varela-Candamio

Grupo Jean Monnet de Competitividad y Desarrollo Department of Economic Analysis and Business Administration University of A Coruña, Campus de Elviña, s/n, 15071, Spain

Abstract: [+]    |    Download File [ 132KB ]

Abstract: Our teaching proposal lies in explaining some of the core concepts of non-cooperative game theory by means of real cases of strategic decision within the computer engineering education. The innovative features of our methodology are based on the use of PC simulations to analyze the strategic decisions faced by Kodak and Polaroid under several circumstances. The discussion of the Kodak vs Polaroid case fits very well to introduce the students the economic perspectives within the more technical discipline of engineering. With this new e-learning method, one the one hand, the students of computer engineering get a more realistic and complete vision in their learning and on the other reduce the degree of abstraction of the theory itself and thereby a greater motivation and interest in social sciences is achieved.

Keywords: game theory; non-cooperative games; Nash equilibrium; Case study; Engineering Education

The Affordances of Mobile Computing Devices in Collaborative Learning


Ilias Hotzoglou

DEREE / The American College of Greece, Athens

Abstract: [+]    |    Download File [ 70KB ]

Abstract: Tablet PCs, tablets, and PDAs are currently used in traditional classrooms to improve the learning process, allowing collaboration to take place among the instructor and students. Can these technologies promote student engagement, enhance the delivery of electronic course materials, and provide an effective way to connect the instructor and student together in an integrated learning environment? A literature review is conducted to determine the efficiency of these technologies contributing to collaborative learning. Tablet PCs have been successfully used in multiple United States institutions with many positive outcomes. Poor findings were found for the new tablets and smartphone devices which require more research to be conducted in the future.

Keywords: Tablet PC, Tablets, iPad, collaborative learning

The GRP Methodology: an Approach to Build Routes Based on Points of Interest


A.M.Magdalena Saldaña, Miguel Torres, Oleksiy Pogrebnyak, Marco oMoreno and Giovanni Guzman

Centro de Investigación en Computación, Instituto Politécnico Nacional, México.

Abstract: [+]    |    Download File [ 2514KB ]

Abstract: Many research areas are developing applications that use the Global Positioning System (GPS) in order to improve human’s life. In routing systems most of the studies are focused on time improvements. Despite they notify users the instructions that they should follow in their travels, they do not include support features that could be useful as landmarks or points of interest (POIs). In this paper, the Routing with Points of Interest (GRP) methodology is proposed. It is based on an application ontology that is used to describe POIs as shops, hospitals and schools, among others, located on the roadways of a case study.

The GRP gives the users instructions to go from one place to another, combining semantic geospatial analysis tools, web and mobile technologies. The routes begin in the mobile position and after applying a geospatial process; the user obtains a map with the route, POIs located on the route, and instructions to change the direction with visual references to help him on his trip. The GRP methodology provides a filter to let user select the kind of business that he wants to visualize, besides the route elements. The cartography used on this work allows the map visualization without an Internet connection

Keywords: Ontology, point-of-interest, routing, geospatial processing, mobile platform.

Fusion of Visible Images and Thermal Image Sequences for Automated Facial Emotion Estimation


Hung Nguyen1, Fan Chen1, Kazunori Kotani1 and Bac Le2

1Japan Advanced Institute of Science and Technology 1-1 Asahidai, Nomi, Ishikawa, Japan
1University of Science, VNU - HCMC, Vietnam, 227 Nguyen Van Cu, Ho Chi Minh city, Vietnam

Abstract: [+]    |    Download File [ 1418KB ]

Abstract: The visible image-based approach has long been considered the most powerful approach to facial emotion estimation. However it is illumination dependency. Under uncontrolled operating conditions, estimation accuracy degrades significantly. In this paper, we focus on integrating visible images with thermal image sequences for facial emotion estimation. First, to address limitations of thermal infrared (IR) images, such as being opaque to eyeglasses, we apply thermal Regions of Interest (t-ROIs) to sequences of thermal images. Then, wavelet transform is applied to visible images. Second, features are selected and fused from visible features and thermal features. Third, fusion decision using conventional methods, Principal Component Analysis (PCA) and Eigen-space Method based on classfeatures (EMC), and our proposed methods, thermal Principal Component Analysis (t-PCA) and norm Eigen-space Method based on class-features (n-EMC), is applied. Applying our suggested methods, experiments on the Kotani Thermal Facial Emotion (KTFE) database show significant improvement, proving its effectiveness.

Keywords: facial emotions, thermal images, emotion estimation, feature fusion, decision fusion, thermal image sequences, t-PCA, n-EMC, KTFE database.

Full Body Adjustment Using Iterative Inverse Kinematic and Body Parts Correlation


Ahlem Bentrah1, Abdelhamid Djeffal1, Mc Babahenini1, Christophe Gillet2, Philippe Pudlo2 and Abdelmalik Taleb-Ahmed2

1LESIA Laboratory, Biskra University Biskra 07000, Algeria
2LAMIH Laboratory, Valenciennes University Valenciennes 59300, France

Abstract: [+]    |    Download File [ 1002KB ]

Abstract: In this paper, we present an iterative inverse kinematic method that adjust 3D human full body pose in real time to achieve new constraints. The input data for the adjustments are the starting posture and the desired end e.ectors positions -constraints-. The principal idea of our method is to divide the full-body into groups and apply inverse kinematic based on conformal algebra to each group in speci.c order, our proposed method involve correlation of body parts. In the .rst part of the paper we explain the used inverse kinematic when handle with one and multiple constraints simultaneously and in the case of the collision induced by the joints with the objects of the environment. The second part focuses on the adjustment algorithm of the full body using the inverse kinematic described above. Comparison is made between the used inverse kinematic(IK) and another inverse kinematic that have the same principle. In the case of multiple tasks simultaneously, our inverse kinematic gives results without con ict. With presence of obstacles, our IK allows to avoid collisions too. Preliminary results of the adjustment method show that it generates new realistic poses that respect quickly new constraints. The tests made on our adjustment method show that it resolves the motion retargeting problem.

Keywords: Animation, Inverse kinematic, Geometric algebra, Virtual humanoid

Sleep Detection Using De-identified Depth Data


Bjorn Kruger1, Anna Vogele1, Marouane Lassiri1, Lukas Herwartz1, Thomas Terkatz1, Andreas Weber1, Carmen Garcia2, Ingo Fietze2 and Thomas Penzel2

1Institute for Computer Science II, University of Bonn Friedrich-Ebert-Allee 144, 53113 Bonn, Germany
2Charite - Universitatsmedizin Berlin Berlin, Germany

Abstract: [+]    |    Download File [ 3428KB ]

Abstract: The work at hand presents a method to assess the quality of human sleep within a non-laboratory environment. The monitoring of patients is performed by means of a Kinect device. This results in a non-invasive method which is independent of immediate physical contact to subjects. The results of a study which was carried out as proof of concept are discussed and compared with the polysomnography-based gold standard of sleep analysis. When medical data are concerned, con.dentiality is always an issue. This is no less important when monitoring people in their own homes, especially when they are in a situation as vulnerable as sleep. To meet the upcoming challenge of protecting people's privacy while still o.ering analyses of their data we introduce a blurring method to the acquired data and evaluate the use of our sleep detection test on such de-identi.ed data sets.

Keywords: sleep, self-monitoring, polysomnography, privacy protection

River Publishers: Journal of Mobile Multimedia